From 74b27b64774a3fef2d2bb53bc48a54776cd71bde Mon Sep 17 00:00:00 2001 From: green Date: Wed, 11 Jul 2001 03:59:16 +0000 Subject: Add some org packages. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@43922 138bc75d-0d04-0410-961f-82ee72b054a4 --- libjava/org/xml/sax/AttributeList.java | 191 ++++ libjava/org/xml/sax/Attributes.java | 243 +++++ libjava/org/xml/sax/ContentHandler.java | 374 ++++++++ libjava/org/xml/sax/DTDHandler.java | 108 +++ libjava/org/xml/sax/DocumentHandler.java | 230 +++++ libjava/org/xml/sax/EntityResolver.java | 110 +++ libjava/org/xml/sax/ErrorHandler.java | 123 +++ libjava/org/xml/sax/HandlerBase.java | 368 +++++++ libjava/org/xml/sax/InputSource.java | 321 +++++++ libjava/org/xml/sax/Locator.java | 126 +++ libjava/org/xml/sax/Parser.java | 207 ++++ libjava/org/xml/sax/SAXException.java | 144 +++ libjava/org/xml/sax/SAXNotRecognizedException.java | 44 + libjava/org/xml/sax/SAXNotSupportedException.java | 44 + libjava/org/xml/sax/SAXParseException.java | 264 +++++ libjava/org/xml/sax/XMLFilter.java | 65 ++ libjava/org/xml/sax/XMLReader.java | 415 ++++++++ libjava/org/xml/sax/ext/DeclHandler.java | 131 +++ libjava/org/xml/sax/ext/LexicalHandler.java | 161 ++++ libjava/org/xml/sax/helpers/AttributeListImpl.java | 310 ++++++ libjava/org/xml/sax/helpers/AttributesImpl.java | 606 ++++++++++++ libjava/org/xml/sax/helpers/DefaultHandler.java | 447 +++++++++ libjava/org/xml/sax/helpers/LocatorImpl.java | 212 ++++ libjava/org/xml/sax/helpers/NamespaceSupport.java | 689 +++++++++++++ libjava/org/xml/sax/helpers/ParserAdapter.java | 1008 ++++++++++++++++++++ libjava/org/xml/sax/helpers/ParserFactory.java | 129 +++ libjava/org/xml/sax/helpers/XMLFilterImpl.java | 769 +++++++++++++++ libjava/org/xml/sax/helpers/XMLReaderAdapter.java | 526 ++++++++++ libjava/org/xml/sax/helpers/XMLReaderFactory.java | 136 +++ 29 files changed, 8501 insertions(+) create mode 100644 libjava/org/xml/sax/AttributeList.java create mode 100644 libjava/org/xml/sax/Attributes.java create mode 100644 libjava/org/xml/sax/ContentHandler.java create mode 100644 libjava/org/xml/sax/DTDHandler.java create mode 100644 libjava/org/xml/sax/DocumentHandler.java create mode 100644 libjava/org/xml/sax/EntityResolver.java create mode 100644 libjava/org/xml/sax/ErrorHandler.java create mode 100644 libjava/org/xml/sax/HandlerBase.java create mode 100644 libjava/org/xml/sax/InputSource.java create mode 100644 libjava/org/xml/sax/Locator.java create mode 100644 libjava/org/xml/sax/Parser.java create mode 100644 libjava/org/xml/sax/SAXException.java create mode 100644 libjava/org/xml/sax/SAXNotRecognizedException.java create mode 100644 libjava/org/xml/sax/SAXNotSupportedException.java create mode 100644 libjava/org/xml/sax/SAXParseException.java create mode 100644 libjava/org/xml/sax/XMLFilter.java create mode 100644 libjava/org/xml/sax/XMLReader.java create mode 100644 libjava/org/xml/sax/ext/DeclHandler.java create mode 100644 libjava/org/xml/sax/ext/LexicalHandler.java create mode 100644 libjava/org/xml/sax/helpers/AttributeListImpl.java create mode 100644 libjava/org/xml/sax/helpers/AttributesImpl.java create mode 100644 libjava/org/xml/sax/helpers/DefaultHandler.java create mode 100644 libjava/org/xml/sax/helpers/LocatorImpl.java create mode 100644 libjava/org/xml/sax/helpers/NamespaceSupport.java create mode 100644 libjava/org/xml/sax/helpers/ParserAdapter.java create mode 100644 libjava/org/xml/sax/helpers/ParserFactory.java create mode 100644 libjava/org/xml/sax/helpers/XMLFilterImpl.java create mode 100644 libjava/org/xml/sax/helpers/XMLReaderAdapter.java create mode 100644 libjava/org/xml/sax/helpers/XMLReaderFactory.java (limited to 'libjava/org/xml') diff --git a/libjava/org/xml/sax/AttributeList.java b/libjava/org/xml/sax/AttributeList.java new file mode 100644 index 00000000000..9ea9295e191 --- /dev/null +++ b/libjava/org/xml/sax/AttributeList.java @@ -0,0 +1,191 @@ +// SAX Attribute List Interface. +// No warranty; no copyright -- use this as you will. +// $Id: AttributeList.java,v 1.1 2000/10/02 02:43:16 sboag Exp $ + +package org.xml.sax; + +/** + * Interface for an element's attribute specifications. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This is the original SAX1 interface for reporting an element's + * attributes. Unlike the new {@link org.xml.sax.Attributes Attributes} + * interface, it does not support Namespace-related information.

+ * + *

When an attribute list is supplied as part of a + * {@link org.xml.sax.DocumentHandler#startElement startElement} + * event, the list will return valid results only during the + * scope of the event; once the event handler returns control + * to the parser, the attribute list is invalid. To save a + * persistent copy of the attribute list, use the SAX1 + * {@link org.xml.sax.helpers.AttributeListImpl AttributeListImpl} + * helper class.

+ * + *

An attribute list includes only attributes that have been + * specified or defaulted: #IMPLIED attributes will not be included.

+ * + *

There are two ways for the SAX application to obtain information + * from the AttributeList. First, it can iterate through the entire + * list:

+ * + * 
+ * public void startElement (String name, AttributeList atts) {
+ *   for (int i = 0; i < atts.getLength(); i++) {
+ *     String name = atts.getName(i);
+ *     String type = atts.getType(i);
+ *     String value = atts.getValue(i);
+ *     [...]
+ *   }
+ * }
+ *
+ * + *

(Note that the result of getLength() will be zero if there + * are no attributes.) + * + *

As an alternative, the application can request the value or + * type of specific attributes:

+ * + * 
+ * public void startElement (String name, AttributeList atts) {
+ *   String identifier = atts.getValue("id");
+ *   String label = atts.getValue("label");
+ *   [...]
+ * }
+ *
+ * + * @deprecated This interface has been replaced by the SAX2 + * {@link org.xml.sax.Attributes Attributes} + * interface, which includes Namespace support. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.DocumentHandler#startElement startElement + * @see org.xml.sax.helpers.AttributeListImpl AttributeListImpl + */ +public interface AttributeList { + + + //////////////////////////////////////////////////////////////////// + // Iteration methods. + //////////////////////////////////////////////////////////////////// + + + /** + * Return the number of attributes in this list. + * + *

The SAX parser may provide attributes in any + * arbitrary order, regardless of the order in which they were + * declared or specified. The number of attributes may be + * zero.

+ * + * @return The number of attributes in the list. + */ + public abstract int getLength (); + + + /** + * Return the name of an attribute in this list (by position). + * + *

The names must be unique: the SAX parser shall not include the + * same attribute twice. Attributes without values (those declared + * #IMPLIED without a value specified in the start tag) will be + * omitted from the list.

+ * + *

If the attribute name has a namespace prefix, the prefix + * will still be attached.

+ * + * @param i The index of the attribute in the list (starting at 0). + * @return The name of the indexed attribute, or null + * if the index is out of range. + * @see #getLength + */ + public abstract String getName (int i); + + + /** + * Return the type of an attribute in the list (by position). + * + *

The attribute type is one of the strings "CDATA", "ID", + * "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", + * or "NOTATION" (always in upper case).

+ * + *

If the parser has not read a declaration for the attribute, + * or if the parser does not report attribute types, then it must + * return the value "CDATA" as stated in the XML 1.0 Recommentation + * (clause 3.3.3, "Attribute-Value Normalization").

+ * + *

For an enumerated attribute that is not a notation, the + * parser will report the type as "NMTOKEN".

+ * + * @param i The index of the attribute in the list (starting at 0). + * @return The attribute type as a string, or + * null if the index is out of range. + * @see #getLength + * @see #getType(java.lang.String) + */ + public abstract String getType (int i); + + + /** + * Return the value of an attribute in the list (by position). + * + *

If the attribute value is a list of tokens (IDREFS, + * ENTITIES, or NMTOKENS), the tokens will be concatenated + * into a single string separated by whitespace.

+ * + * @param i The index of the attribute in the list (starting at 0). + * @return The attribute value as a string, or + * null if the index is out of range. + * @see #getLength + * @see #getValue(java.lang.String) + */ + public abstract String getValue (int i); + + + + //////////////////////////////////////////////////////////////////// + // Lookup methods. + //////////////////////////////////////////////////////////////////// + + + /** + * Return the type of an attribute in the list (by name). + * + *

The return value is the same as the return value for + * getType(int).

+ * + *

If the attribute name has a namespace prefix in the document, + * the application must include the prefix here.

+ * + * @param name The name of the attribute. + * @return The attribute type as a string, or null if no + * such attribute exists. + * @see #getType(int) + */ + public abstract String getType (String name); + + + /** + * Return the value of an attribute in the list (by name). + * + *

The return value is the same as the return value for + * getValue(int).

+ * + *

If the attribute name has a namespace prefix in the document, + * the application must include the prefix here.

+ * + * @param i The index of the attribute in the list. + * @return The attribute value as a string, or null if + * no such attribute exists. + * @see #getValue(int) + */ + public abstract String getValue (String name); + +} + +// end of AttributeList.java diff --git a/libjava/org/xml/sax/Attributes.java b/libjava/org/xml/sax/Attributes.java new file mode 100644 index 00000000000..f10067a9288 --- /dev/null +++ b/libjava/org/xml/sax/Attributes.java @@ -0,0 +1,243 @@ +// Attributes.java - attribute list with Namespace support +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: Attributes.java,v 1.1 2000/10/02 02:43:16 sboag Exp $ + + +package org.xml.sax; + + +/** + * Interface for a list of XML attributes. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This interface allows access to a list of attributes in + * three different ways:

+ * + *
    + *
  1. by attribute index;
    2. + *
  2. by Namespace-qualified name; or
    3. + *
  3. by qualified (prefixed) name.
    4. + *
+ * + *

The list will not contain attributes that were declared + * #IMPLIED but not specified in the start tag. It will also not + * contain attributes used as Namespace declarations (xmlns*) unless + * the http://xml.org/sax/features/namespace-prefixes + * feature is set to true (it is false by + * default).

+ * + *

If the namespace-prefixes feature (see above) is false, + * access by qualified name may not be available; if the + * http://xml.org/sax/features/namespaces + * feature is false, access by Namespace-qualified names + * may not be available.

+ * + *

This interface replaces the now-deprecated SAX1 {@link + * org.xml.sax.AttributeList AttributeList} interface, which does not + * contain Namespace support. In addition to Namespace support, it + * adds the getIndex methods (below).

+ * + *

The order of attributes in the list is unspecified, and will + * vary from implementation to implementation.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.helpers.AttributeListImpl + */ +public interface Attributes +{ + + + //////////////////////////////////////////////////////////////////// + // Indexed access. + //////////////////////////////////////////////////////////////////// + + + /** + * Return the number of attributes in the list. + * + *

Once you know the number of attributes, you can iterate + * through the list.

+ * + * @return The number of attributes in the list. + * @see #getURI(int) + * @see #getLocalName(int) + * @see #getQName(int) + * @see #getType(int) + * @see #getValue(int) + */ + public abstract int getLength (); + + + /** + * Look up an attribute's Namespace URI by index. + * + * @param index The attribute index (zero-based). + * @return The Namespace URI, or the empty string if none + * is available, or null if the index is out of + * range. + * @see #getLength + */ + public abstract String getURI (int index); + + + /** + * Look up an attribute's local name by index. + * + * @param index The attribute index (zero-based). + * @return The local name, or the empty string if Namespace + * processing is not being performed, or null + * if the index is out of range. + * @see #getLength + */ + public abstract String getLocalName (int index); + + + /** + * Look up an attribute's XML 1.0 qualified name by index. + * + * @param index The attribute index (zero-based). + * @return The XML 1.0 qualified name, or the empty string + * if none is available, or null if the index + * is out of range. + * @see #getLength + */ + public abstract String getQName (int index); + + + /** + * Look up an attribute's type by index. + * + *

The attribute type is one of the strings "CDATA", "ID", + * "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", + * or "NOTATION" (always in upper case).

+ * + *

If the parser has not read a declaration for the attribute, + * or if the parser does not report attribute types, then it must + * return the value "CDATA" as stated in the XML 1.0 Recommentation + * (clause 3.3.3, "Attribute-Value Normalization").

+ * + *

For an enumerated attribute that is not a notation, the + * parser will report the type as "NMTOKEN".

+ * + * @param index The attribute index (zero-based). + * @return The attribute's type as a string, or null if the + * index is out of range. + * @see #getLength + */ + public abstract String getType (int index); + + + /** + * Look up an attribute's value by index. + * + *

If the attribute value is a list of tokens (IDREFS, + * ENTITIES, or NMTOKENS), the tokens will be concatenated + * into a single string with each token separated by a + * single space.

+ * + * @param index The attribute index (zero-based). + * @return The attribute's value as a string, or null if the + * index is out of range. + * @see #getLength + */ + public abstract String getValue (int index); + + + + //////////////////////////////////////////////////////////////////// + // Name-based query. + //////////////////////////////////////////////////////////////////// + + + /** + * Look up the index of an attribute by Namespace name. + * + * @param uri The Namespace URI, or the empty string if + * the name has no Namespace URI. + * @param localName The attribute's local name. + * @return The index of the attribute, or -1 if it does not + * appear in the list. + */ + public int getIndex (String uri, String localPart); + + + /** + * Look up the index of an attribute by XML 1.0 qualified name. + * + * @param qName The qualified (prefixed) name. + * @return The index of the attribute, or -1 if it does not + * appear in the list. + */ + public int getIndex (String qName); + + + /** + * Look up an attribute's type by Namespace name. + * + *

See {@link #getType(int) getType(int)} for a description + * of the possible types.

+ * + * @param uri The Namespace URI, or the empty String if the + * name has no Namespace URI. + * @param localName The local name of the attribute. + * @return The attribute type as a string, or null if the + * attribute is not in the list or if Namespace + * processing is not being performed. + */ + public abstract String getType (String uri, String localName); + + + /** + * Look up an attribute's type by XML 1.0 qualified name. + * + *

See {@link #getType(int) getType(int)} for a description + * of the possible types.

+ * + * @param qName The XML 1.0 qualified name. + * @return The attribute type as a string, or null if the + * attribute is not in the list or if qualified names + * are not available. + */ + public abstract String getType (String qName); + + + /** + * Look up an attribute's value by Namespace name. + * + *

See {@link #getValue(int) getValue(int)} for a description + * of the possible values.

+ * + * @param uri The Namespace URI, or the empty String if the + * name has no Namespace URI. + * @param localName The local name of the attribute. + * @return The attribute value as a string, or null if the + * attribute is not in the list. + */ + public abstract String getValue (String uri, String localName); + + + /** + * Look up an attribute's value by XML 1.0 qualified name. + * + *

See {@link #getValue(int) getValue(int)} for a description + * of the possible values.

+ * + * @param qName The XML 1.0 qualified name. + * @return The attribute value as a string, or null if the + * attribute is not in the list or if qualified names + * are not available. + */ + public abstract String getValue (String qName); + +} + +// end of Attributes.java diff --git a/libjava/org/xml/sax/ContentHandler.java b/libjava/org/xml/sax/ContentHandler.java new file mode 100644 index 00000000000..0d84d0eae99 --- /dev/null +++ b/libjava/org/xml/sax/ContentHandler.java @@ -0,0 +1,374 @@ +// ContentHandler.java - handle main document content. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: ContentHandler.java,v 1.1 2000/10/02 02:43:16 sboag Exp $ + +package org.xml.sax; + + +/** + * Receive notification of the logical content of a document. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This is the main interface that most SAX applications + * implement: if the application needs to be informed of basic parsing + * events, it implements this interface and registers an instance with + * the SAX parser using the {@link org.xml.sax.XMLReader#setContentHandler + * setContentHandler} method. The parser uses the instance to report + * basic document-related events like the start and end of elements + * and character data.

+ * + *

The order of events in this interface is very important, and + * mirrors the order of information in the document itself. For + * example, all of an element's content (character data, processing + * instructions, and/or subelements) will appear, in order, between + * the startElement event and the corresponding endElement event.

+ * + *

This interface is similar to the now-deprecated SAX 1.0 + * DocumentHandler interface, but it adds support for Namespaces + * and for reporting skipped entities (in non-validating XML + * processors).

+ * + *

Implementors should note that there is also a Java class + * {@link java.net.ContentHandler ContentHandler} in the java.net + * package; that means that it's probably a bad idea to do

+ * + *
+ * import java.net.*; + * import org.xml.sax.*; + *
+ * + *

In fact, "import ...*" is usually a sign of sloppy programming + * anyway, so the user should consider this a feature rather than a + * bug.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.XMLReader + * @see org.xml.sax.DTDHandler + * @see org.xml.sax.ErrorHandler + */ +public interface ContentHandler +{ + + /** + * Receive an object for locating the origin of SAX document events. + * + *

SAX parsers are strongly encouraged (though not absolutely + * required) to supply a locator: if it does so, it must supply + * the locator to the application by invoking this method before + * invoking any of the other methods in the ContentHandler + * interface.

+ * + *

The locator allows the application to determine the end + * position of any document-related event, even if the parser is + * not reporting an error. Typically, the application will + * use this information for reporting its own errors (such as + * character content that does not match an application's + * business rules). The information returned by the locator + * is probably not sufficient for use with a search engine.

+ * + *

Note that the locator will return correct information only + * during the invocation of the events in this interface. The + * application should not attempt to use it at any other time.

+ * + * @param locator An object that can return the location of + * any SAX document event. + * @see org.xml.sax.Locator + */ + public void setDocumentLocator (Locator locator); + + + /** + * Receive notification of the beginning of a document. + * + *

The SAX parser will invoke this method only once, before any + * other methods in this interface or in {@link org.xml.sax.DTDHandler + * DTDHandler} (except for {@link #setDocumentLocator + * setDocumentLocator}).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #endDocument + */ + public void startDocument () + throws SAXException; + + + /** + * Receive notification of the end of a document. + * + *

The SAX parser will invoke this method only once, and it will + * be the last method invoked during the parse. The parser shall + * not invoke this method until it has either abandoned parsing + * (because of an unrecoverable error) or reached the end of + * input.

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #startDocument + */ + public void endDocument() + throws SAXException; + + + /** + * Begin the scope of a prefix-URI Namespace mapping. + * + *

The information from this event is not necessary for + * normal Namespace processing: the SAX XML reader will + * automatically replace prefixes for element and attribute + * names when the http://xml.org/sax/features/namespaces + * feature is true (the default).

+ * + *

There are cases, however, when applications need to + * use prefixes in character data or in attribute values, + * where they cannot safely be expanded automatically; the + * start/endPrefixMapping event supplies the information + * to the application to expand prefixes in those contexts + * itself, if necessary.

+ * + *

Note that start/endPrefixMapping events are not + * guaranteed to be properly nested relative to each-other: + * all startPrefixMapping events will occur before the + * corresponding {@link #startElement startElement} event, + * and all {@link #endPrefixMapping endPrefixMapping} + * events will occur after the corresponding {@link #endElement + * endElement} event, but their order is not otherwise + * guaranteed.

+ * + *

There should never be start/endPrefixMapping events for the + * "xml" prefix, since it is predeclared and immutable.

+ * + * @param prefix The Namespace prefix being declared. + * @param uri The Namespace URI the prefix is mapped to. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see #endPrefixMapping + * @see #startElement + */ + public void startPrefixMapping (String prefix, String uri) + throws SAXException; + + + /** + * End the scope of a prefix-URI mapping. + * + *

See {@link #startPrefixMapping startPrefixMapping} for + * details. This event will always occur after the corresponding + * {@link #endElement endElement} event, but the order of + * {@link #endPrefixMapping endPrefixMapping} events is not otherwise + * guaranteed.

+ * + * @param prefix The prefix that was being mapping. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see #startPrefixMapping + * @see #endElement + */ + public void endPrefixMapping (String prefix) + throws SAXException; + + + /** + * Receive notification of the beginning of an element. + * + *

The Parser will invoke this method at the beginning of every + * element in the XML document; there will be a corresponding + * {@link #endElement endElement} event for every startElement event + * (even when the element is empty). All of the element's content will be + * reported, in order, before the corresponding endElement + * event.

+ * + *

This event allows up to three name components for each + * element:

+ * + *
    + *
  1. the Namespace URI;
    2. + *
  2. the local name; and
    3. + *
  3. the qualified (prefixed) name.
    4. + *
+ * + *

Any or all of these may be provided, depending on the + * values of the http://xml.org/sax/features/namespaces + * and the http://xml.org/sax/features/namespace-prefixes + * properties:

+ * + * + * + *

Note that the attribute list provided will contain only + * attributes with explicit values (specified or defaulted): + * #IMPLIED attributes will be omitted. The attribute list + * will contain attributes used for Namespace declarations + * (xmlns* attributes) only if the + * http://xml.org/sax/features/namespace-prefixes + * property is true (it is false by default, and support for a + * true value is optional).

+ * + * @param uri The Namespace URI, or the empty string if the + * element has no Namespace URI or if Namespace + * processing is not being performed. + * @param localName The local name (without prefix), or the + * empty string if Namespace processing is not being + * performed. + * @param qName The qualified name (with prefix), or the + * empty string if qualified names are not available. + * @param atts The attributes attached to the element. If + * there are no attributes, it shall be an empty + * Attributes object. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #endElement + * @see org.xml.sax.Attributes + */ + public void startElement (String namespaceURI, String localName, + String qName, Attributes atts) + throws SAXException; + + + /** + * Receive notification of the end of an element. + * + *

The SAX parser will invoke this method at the end of every + * element in the XML document; there will be a corresponding + * {@link #startElement startElement} event for every endElement + * event (even when the element is empty).

+ * + *

For information on the names, see startElement.

+ * + * @param uri The Namespace URI, or the empty string if the + * element has no Namespace URI or if Namespace + * processing is not being performed. + * @param localName The local name (without prefix), or the + * empty string if Namespace processing is not being + * performed. + * @param qName The qualified XML 1.0 name (with prefix), or the + * empty string if qualified names are not available. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public void endElement (String namespaceURI, String localName, + String qName) + throws SAXException; + + + /** + * Receive notification of character data. + * + *

The Parser will call this method to report each chunk of + * character data. SAX parsers may return all contiguous character + * data in a single chunk, or they may split it into several + * chunks; however, all of the characters in any single event + * must come from the same external entity so that the Locator + * provides useful information.

+ * + *

The application must not attempt to read from the array + * outside of the specified range.

+ * + *

Note that some parsers will report whitespace in element + * content using the {@link #ignorableWhitespace ignorableWhitespace} + * method rather than this one (validating parsers must + * do so).

+ * + * @param ch The characters from the XML document. + * @param start The start position in the array. + * @param length The number of characters to read from the array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #ignorableWhitespace + * @see org.xml.sax.Locator + */ + public void characters (char ch[], int start, int length) + throws SAXException; + + + /** + * Receive notification of ignorable whitespace in element content. + * + *

Validating Parsers must use this method to report each chunk + * of whitespace in element content (see the W3C XML 1.0 recommendation, + * section 2.10): non-validating parsers may also use this method + * if they are capable of parsing and using content models.

+ * + *

SAX parsers may return all contiguous whitespace in a single + * chunk, or they may split it into several chunks; however, all of + * the characters in any single event must come from the same + * external entity, so that the Locator provides useful + * information.

+ * + *

The application must not attempt to read from the array + * outside of the specified range.

+ * + * @param ch The characters from the XML document. + * @param start The start position in the array. + * @param length The number of characters to read from the array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #characters + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException; + + + /** + * Receive notification of a processing instruction. + * + *

The Parser will invoke this method once for each processing + * instruction found: note that processing instructions may occur + * before or after the main document element.

+ * + *

A SAX parser must never report an XML declaration (XML 1.0, + * section 2.8) or a text declaration (XML 1.0, section 4.3.1) + * using this method.

+ * + * @param target The processing instruction target. + * @param data The processing instruction data, or null if + * none was supplied. The data does not include any + * whitespace separating it from the target. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public void processingInstruction (String target, String data) + throws SAXException; + + + /** + * Receive notification of a skipped entity. + * + *

The Parser will invoke this method once for each entity + * skipped. Non-validating processors may skip entities if they + * have not seen the declarations (because, for example, the + * entity was declared in an external DTD subset). All processors + * may skip external entities, depending on the values of the + * http://xml.org/sax/features/external-general-entities + * and the + * http://xml.org/sax/features/external-parameter-entities + * properties.

+ * + * @param name The name of the skipped entity. If it is a + * parameter entity, the name will begin with '%', and if + * it is the external DTD subset, it will be the string + * "[dtd]". + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public void skippedEntity (String name) + throws SAXException; +} + +// end of ContentHandler.java diff --git a/libjava/org/xml/sax/DTDHandler.java b/libjava/org/xml/sax/DTDHandler.java new file mode 100644 index 00000000000..509a0069ba8 --- /dev/null +++ b/libjava/org/xml/sax/DTDHandler.java @@ -0,0 +1,108 @@ +// SAX DTD handler. +// No warranty; no copyright -- use this as you will. +// $Id: DTDHandler.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +/** + * Receive notification of basic DTD-related events. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

If a SAX application needs information about notations and + * unparsed entities, then the application implements this + * interface and registers an instance with the SAX parser using + * the parser's setDTDHandler method. The parser uses the + * instance to report notation and unparsed entity declarations to + * the application.

+ * + *

Note that this interface includes only those DTD events that + * the XML recommendation requires processors to report: + * notation and unparsed entity declarations.

+ * + *

The SAX parser may report these events in any order, regardless + * of the order in which the notations and unparsed entities were + * declared; however, all DTD events must be reported after the + * document handler's startDocument event, and before the first + * startElement event.

+ * + *

It is up to the application to store the information for + * future use (perhaps in a hash table or object tree). + * If the application encounters attributes of type "NOTATION", + * "ENTITY", or "ENTITIES", it can use the information that it + * obtained through this interface to find the entity and/or + * notation corresponding with the attribute value.

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser#setDTDHandler + * @see org.xml.sax.HandlerBase + */ +public interface DTDHandler { + + + /** + * Receive notification of a notation declaration event. + * + *

It is up to the application to record the notation for later + * reference, if necessary.

+ * + *

At least one of publicId and systemId must be non-null. + * If a system identifier is present, and it is a URL, the SAX + * parser must resolve it fully before passing it to the + * application through this event.

+ * + *

There is no guarantee that the notation declaration will be + * reported before any unparsed entities that use it.

+ * + * @param name The notation name. + * @param publicId The notation's public identifier, or null if + * none was given. + * @param systemId The notation's system identifier, or null if + * none was given. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #unparsedEntityDecl + * @see org.xml.sax.AttributeList + */ + public abstract void notationDecl (String name, + String publicId, + String systemId) + throws SAXException; + + + /** + * Receive notification of an unparsed entity declaration event. + * + *

Note that the notation name corresponds to a notation + * reported by the {@link #notationDecl notationDecl} event. + * It is up to the application to record the entity for later + * reference, if necessary.

+ * + *

If the system identifier is a URL, the parser must resolve it + * fully before passing it to the application.

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @param name The unparsed entity's name. + * @param publicId The entity's public identifier, or null if none + * was given. + * @param systemId The entity's system identifier. + * @param notation name The name of the associated notation. + * @see #notationDecl + * @see org.xml.sax.AttributeList + */ + public abstract void unparsedEntityDecl (String name, + String publicId, + String systemId, + String notationName) + throws SAXException; + +} + +// end of DTDHandler.java diff --git a/libjava/org/xml/sax/DocumentHandler.java b/libjava/org/xml/sax/DocumentHandler.java new file mode 100644 index 00000000000..be0a189c45b --- /dev/null +++ b/libjava/org/xml/sax/DocumentHandler.java @@ -0,0 +1,230 @@ +// SAX document handler. +// No warranty; no copyright -- use this as you will. +// $Id: DocumentHandler.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +/** + * Receive notification of general document events. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This was the main event-handling interface for SAX1; in + * SAX2, it has been replaced by {@link org.xml.sax.ContentHandler + * ContentHandler}, which provides Namespace support and reporting + * of skipped entities. This interface is included in SAX2 only + * to support legacy SAX1 applications.

+ * + *

The order of events in this interface is very important, and + * mirrors the order of information in the document itself. For + * example, all of an element's content (character data, processing + * instructions, and/or subelements) will appear, in order, between + * the startElement event and the corresponding endElement event.

+ * + *

Application writers who do not want to implement the entire + * interface can derive a class from HandlerBase, which implements + * the default functionality; parser writers can instantiate + * HandlerBase to obtain a default handler. The application can find + * the location of any document event using the Locator interface + * supplied by the Parser through the setDocumentLocator method.

+ * + * @deprecated This interface has been replaced by the SAX2 + * {@link org.xml.sax.ContentHandler ContentHandler} + * interface, which includes Namespace support. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser#setDocumentHandler + * @see org.xml.sax.Locator + * @see org.xml.sax.HandlerBase + */ +public interface DocumentHandler { + + + /** + * Receive an object for locating the origin of SAX document events. + * + *

SAX parsers are strongly encouraged (though not absolutely + * required) to supply a locator: if it does so, it must supply + * the locator to the application by invoking this method before + * invoking any of the other methods in the DocumentHandler + * interface.

+ * + *

The locator allows the application to determine the end + * position of any document-related event, even if the parser is + * not reporting an error. Typically, the application will + * use this information for reporting its own errors (such as + * character content that does not match an application's + * business rules). The information returned by the locator + * is probably not sufficient for use with a search engine.

+ * + *

Note that the locator will return correct information only + * during the invocation of the events in this interface. The + * application should not attempt to use it at any other time.

+ * + * @param locator An object that can return the location of + * any SAX document event. + * @see org.xml.sax.Locator + */ + public abstract void setDocumentLocator (Locator locator); + + + /** + * Receive notification of the beginning of a document. + * + *

The SAX parser will invoke this method only once, before any + * other methods in this interface or in DTDHandler (except for + * setDocumentLocator).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public abstract void startDocument () + throws SAXException; + + + /** + * Receive notification of the end of a document. + * + *

The SAX parser will invoke this method only once, and it will + * be the last method invoked during the parse. The parser shall + * not invoke this method until it has either abandoned parsing + * (because of an unrecoverable error) or reached the end of + * input.

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public abstract void endDocument () + throws SAXException; + + + /** + * Receive notification of the beginning of an element. + * + *

The Parser will invoke this method at the beginning of every + * element in the XML document; there will be a corresponding + * endElement() event for every startElement() event (even when the + * element is empty). All of the element's content will be + * reported, in order, before the corresponding endElement() + * event.

+ * + *

If the element name has a namespace prefix, the prefix will + * still be attached. Note that the attribute list provided will + * contain only attributes with explicit values (specified or + * defaulted): #IMPLIED attributes will be omitted.

+ * + * @param name The element type name. + * @param atts The attributes attached to the element, if any. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #endElement + * @see org.xml.sax.AttributeList + */ + public abstract void startElement (String name, AttributeList atts) + throws SAXException; + + + /** + * Receive notification of the end of an element. + * + *

The SAX parser will invoke this method at the end of every + * element in the XML document; there will be a corresponding + * startElement() event for every endElement() event (even when the + * element is empty).

+ * + *

If the element name has a namespace prefix, the prefix will + * still be attached to the name.

+ * + * @param name The element type name + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public abstract void endElement (String name) + throws SAXException; + + + /** + * Receive notification of character data. + * + *

The Parser will call this method to report each chunk of + * character data. SAX parsers may return all contiguous character + * data in a single chunk, or they may split it into several + * chunks; however, all of the characters in any single event + * must come from the same external entity, so that the Locator + * provides useful information.

+ * + *

The application must not attempt to read from the array + * outside of the specified range.

+ * + *

Note that some parsers will report whitespace using the + * ignorableWhitespace() method rather than this one (validating + * parsers must do so).

+ * + * @param ch The characters from the XML document. + * @param start The start position in the array. + * @param length The number of characters to read from the array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #ignorableWhitespace + * @see org.xml.sax.Locator + */ + public abstract void characters (char ch[], int start, int length) + throws SAXException; + + + /** + * Receive notification of ignorable whitespace in element content. + * + *

Validating Parsers must use this method to report each chunk + * of ignorable whitespace (see the W3C XML 1.0 recommendation, + * section 2.10): non-validating parsers may also use this method + * if they are capable of parsing and using content models.

+ * + *

SAX parsers may return all contiguous whitespace in a single + * chunk, or they may split it into several chunks; however, all of + * the characters in any single event must come from the same + * external entity, so that the Locator provides useful + * information.

+ * + *

The application must not attempt to read from the array + * outside of the specified range.

+ * + * @param ch The characters from the XML document. + * @param start The start position in the array. + * @param length The number of characters to read from the array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see #characters + */ + public abstract void ignorableWhitespace (char ch[], int start, int length) + throws SAXException; + + + /** + * Receive notification of a processing instruction. + * + *

The Parser will invoke this method once for each processing + * instruction found: note that processing instructions may occur + * before or after the main document element.

+ * + *

A SAX parser should never report an XML declaration (XML 1.0, + * section 2.8) or a text declaration (XML 1.0, section 4.3.1) + * using this method.

+ * + * @param target The processing instruction target. + * @param data The processing instruction data, or null if + * none was supplied. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + */ + public abstract void processingInstruction (String target, String data) + throws SAXException; + +} + +// end of DocumentHandler.java diff --git a/libjava/org/xml/sax/EntityResolver.java b/libjava/org/xml/sax/EntityResolver.java new file mode 100644 index 00000000000..3270471453a --- /dev/null +++ b/libjava/org/xml/sax/EntityResolver.java @@ -0,0 +1,110 @@ +// SAX entity resolver. +// No warranty; no copyright -- use this as you will. +// $Id: EntityResolver.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +import java.io.IOException; + + +/** + * Basic interface for resolving entities. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

If a SAX application needs to implement customized handling + * for external entities, it must implement this interface and + * register an instance with the SAX driver using the + * {@link org.xml.sax.XMLReader#setEntityResolver setEntityResolver} + * method.

+ * + *

The XML reader will then allow the application to intercept any + * external entities (including the external DTD subset and external + * parameter entities, if any) before including them.

+ * + *

Many SAX applications will not need to implement this interface, + * but it will be especially useful for applications that build + * XML documents from databases or other specialised input sources, + * or for applications that use URI types other than URLs.

+ * + *

The following resolver would provide the application + * with a special character stream for the entity with the system + * identifier "http://www.myhost.com/today":

+ * + * 
+ * import org.xml.sax.EntityResolver;
+ * import org.xml.sax.InputSource;
+ *
+ * public class MyResolver implements EntityResolver {
+ *   public InputSource resolveEntity (String publicId, String systemId)
+ *   {
+ *     if (systemId.equals("http://www.myhost.com/today")) {
+ *              // return a special input source
+ *       MyReader reader = new MyReader();
+ *       return new InputSource(reader);
+ *     } else {
+ *              // use the default behaviour
+ *       return null;
+ *     }
+ *   }
+ * }
+ *
+ * + *

The application can also use this interface to redirect system + * identifiers to local URIs or to look up replacements in a catalog + * (possibly by using the public identifier).

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser#setEntityResolver + * @see org.xml.sax.InputSource + */ +public interface EntityResolver { + + + /** + * Allow the application to resolve external entities. + * + *

The Parser will call this method before opening any external + * entity except the top-level document entity (including the + * external DTD subset, external entities referenced within the + * DTD, and external entities referenced within the document + * element): the application may request that the parser resolve + * the entity itself, that it use an alternative URI, or that it + * use an entirely different input source.

+ * + *

Application writers can use this method to redirect external + * system identifiers to secure and/or local URIs, to look up + * public identifiers in a catalogue, or to read an entity from a + * database or other input source (including, for example, a dialog + * box).

+ * + *

If the system identifier is a URL, the SAX parser must + * resolve it fully before reporting it to the application.

+ * + * @param publicId The public identifier of the external entity + * being referenced, or null if none was supplied. + * @param systemId The system identifier of the external entity + * being referenced. + * @return An InputSource object describing the new input source, + * or null to request that the parser open a regular + * URI connection to the system identifier. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException A Java-specific IO exception, + * possibly the result of creating a new InputStream + * or Reader for the InputSource. + * @see org.xml.sax.InputSource + */ + public abstract InputSource resolveEntity (String publicId, + String systemId) + throws SAXException, IOException; + +} + +// end of EntityResolver.java diff --git a/libjava/org/xml/sax/ErrorHandler.java b/libjava/org/xml/sax/ErrorHandler.java new file mode 100644 index 00000000000..8b3e090cd6d --- /dev/null +++ b/libjava/org/xml/sax/ErrorHandler.java @@ -0,0 +1,123 @@ +// SAX error handler. +// No warranty; no copyright -- use this as you will. +// $Id: ErrorHandler.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + + +/** + * Basic interface for SAX error handlers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

If a SAX application needs to implement customized error + * handling, it must implement this interface and then register an + * instance with the XML reader using the + * {@link org.xml.sax.XMLReader#setErrorHandler setErrorHandler} + * method. The parser will then report all errors and warnings + * through this interface.

+ * + *

WARNING: If an application does not + * register an ErrorHandler, XML parsing errors will go unreported + * and bizarre behaviour may result.

+ * + *

For XML processing errors, a SAX driver must use this interface + * instead of throwing an exception: it is up to the application + * to decide whether to throw an exception for different types of + * errors and warnings. Note, however, that there is no requirement that + * the parser continue to provide useful information after a call to + * {@link #fatalError fatalError} (in other words, a SAX driver class + * could catch an exception and report a fatalError).

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser#setErrorHandler + * @see org.xml.sax.SAXParseException + */ +public interface ErrorHandler { + + + /** + * Receive notification of a warning. + * + *

SAX parsers will use this method to report conditions that + * are not errors or fatal errors as defined by the XML 1.0 + * recommendation. The default behaviour is to take no action.

+ * + *

The SAX parser must continue to provide normal parsing events + * after invoking this method: it should still be possible for the + * application to process the document through to the end.

+ * + *

Filters may use this method to report other, non-XML warnings + * as well.

+ * + * @param exception The warning information encapsulated in a + * SAX parse exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.SAXParseException + */ + public abstract void warning (SAXParseException exception) + throws SAXException; + + + /** + * Receive notification of a recoverable error. + * + *

This corresponds to the definition of "error" in section 1.2 + * of the W3C XML 1.0 Recommendation. For example, a validating + * parser would use this callback to report the violation of a + * validity constraint. The default behaviour is to take no + * action.

+ * + *

The SAX parser must continue to provide normal parsing events + * after invoking this method: it should still be possible for the + * application to process the document through to the end. If the + * application cannot do so, then the parser should report a fatal + * error even if the XML 1.0 recommendation does not require it to + * do so.

+ * + *

Filters may use this method to report other, non-XML errors + * as well.

+ * + * @param exception The error information encapsulated in a + * SAX parse exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.SAXParseException + */ + public abstract void error (SAXParseException exception) + throws SAXException; + + + /** + * Receive notification of a non-recoverable error. + * + *

This corresponds to the definition of "fatal error" in + * section 1.2 of the W3C XML 1.0 Recommendation. For example, a + * parser would use this callback to report the violation of a + * well-formedness constraint.

+ * + *

The application must assume that the document is unusable + * after the parser has invoked this method, and should continue + * (if at all) only for the sake of collecting addition error + * messages: in fact, SAX parsers are free to stop reporting any + * other events once this method has been invoked.

+ * + * @param exception The error information encapsulated in a + * SAX parse exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.SAXParseException + */ + public abstract void fatalError (SAXParseException exception) + throws SAXException; + +} + +// end of ErrorHandler.java diff --git a/libjava/org/xml/sax/HandlerBase.java b/libjava/org/xml/sax/HandlerBase.java new file mode 100644 index 00000000000..297aced7aaa --- /dev/null +++ b/libjava/org/xml/sax/HandlerBase.java @@ -0,0 +1,368 @@ +// SAX default handler base class. +// No warranty; no copyright -- use this as you will. +// $Id: HandlerBase.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +/** + * Default base class for handlers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class implements the default behaviour for four SAX1 + * interfaces: EntityResolver, DTDHandler, DocumentHandler, + * and ErrorHandler. It is now obsolete, but is included in SAX2 to + * support legacy SAX1 applications. SAX2 applications should use + * the {@link org.xml.sax.helpers.DefaultHandler DefaultHandler} + * class instead.

+ * + *

Application writers can extend this class when they need to + * implement only part of an interface; parser writers can + * instantiate this class to provide default handlers when the + * application has not supplied its own.

+ * + *

Note that the use of this class is optional.

+ * + * @deprecated This class works with the deprecated + * {@link org.xml.sax.DocumentHandler DocumentHandler} + * interface. It has been replaced by the SAX2 + * {@link org.xml.sax.helpers.DefaultHandler DefaultHandler} + * class. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.EntityResolver + * @see org.xml.sax.DTDHandler + * @see org.xml.sax.DocumentHandler + * @see org.xml.sax.ErrorHandler + */ +public class HandlerBase + implements EntityResolver, DTDHandler, DocumentHandler, ErrorHandler +{ + + + //////////////////////////////////////////////////////////////////// + // Default implementation of the EntityResolver interface. + //////////////////////////////////////////////////////////////////// + + /** + * Resolve an external entity. + * + *

Always return null, so that the parser will use the system + * identifier provided in the XML document. This method implements + * the SAX default behaviour: application writers can override it + * in a subclass to do special translations such as catalog lookups + * or URI redirection.

+ * + * @param publicId The public identifer, or null if none is + * available. + * @param systemId The system identifier provided in the XML + * document. + * @return The new input source, or null to require the + * default behaviour. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.EntityResolver#resolveEntity + */ + public InputSource resolveEntity (String publicId, String systemId) + throws SAXException + { + return null; + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of DTDHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive notification of a notation declaration. + * + *

By default, do nothing. Application writers may override this + * method in a subclass if they wish to keep track of the notations + * declared in a document.

+ * + * @param name The notation name. + * @param publicId The notation public identifier, or null if not + * available. + * @param systemId The notation system identifier. + * @see org.xml.sax.DTDHandler#notationDecl + */ + public void notationDecl (String name, String publicId, String systemId) + { + // no op + } + + + /** + * Receive notification of an unparsed entity declaration. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to keep track of the unparsed entities + * declared in a document.

+ * + * @param name The entity name. + * @param publicId The entity public identifier, or null if not + * available. + * @param systemId The entity system identifier. + * @param notationName The name of the associated notation. + * @see org.xml.sax.DTDHandler#unparsedEntityDecl + */ + public void unparsedEntityDecl (String name, String publicId, + String systemId, String notationName) + { + // no op + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of DocumentHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive a Locator object for document events. + * + *

By default, do nothing. Application writers may override this + * method in a subclass if they wish to store the locator for use + * with other document events.

+ * + * @param locator A locator for all SAX document events. + * @see org.xml.sax.DocumentHandler#setDocumentLocator + * @see org.xml.sax.Locator + */ + public void setDocumentLocator (Locator locator) + { + // no op + } + + + /** + * Receive notification of the beginning of the document. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the beginning + * of a document (such as allocating the root node of a tree or + * creating an output file).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#startDocument + */ + public void startDocument () + throws SAXException + { + // no op + } + + + /** + * Receive notification of the end of the document. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the beginning + * of a document (such as finalising a tree or closing an output + * file).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#endDocument + */ + public void endDocument () + throws SAXException + { + // no op + } + + + /** + * Receive notification of the start of an element. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the start of + * each element (such as allocating a new tree node or writing + * output to a file).

+ * + * @param name The element type name. + * @param attributes The specified or defaulted attributes. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#startElement + */ + public void startElement (String name, AttributeList attributes) + throws SAXException + { + // no op + } + + + /** + * Receive notification of the end of an element. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the end of + * each element (such as finalising a tree node or writing + * output to a file).

+ * + * @param name The element type name. + * @param attributes The specified or defaulted attributes. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#endElement + */ + public void endElement (String name) + throws SAXException + { + // no op + } + + + /** + * Receive notification of character data inside an element. + * + *

By default, do nothing. Application writers may override this + * method to take specific actions for each chunk of character data + * (such as adding the data to a node or buffer, or printing it to + * a file).

+ * + * @param ch The characters. + * @param start The start position in the character array. + * @param length The number of characters to use from the + * character array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#characters + */ + public void characters (char ch[], int start, int length) + throws SAXException + { + // no op + } + + + /** + * Receive notification of ignorable whitespace in element content. + * + *

By default, do nothing. Application writers may override this + * method to take specific actions for each chunk of ignorable + * whitespace (such as adding data to a node or buffer, or printing + * it to a file).

+ * + * @param ch The whitespace characters. + * @param start The start position in the character array. + * @param length The number of characters to use from the + * character array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#ignorableWhitespace + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException + { + // no op + } + + + /** + * Receive notification of a processing instruction. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions for each + * processing instruction, such as setting status variables or + * invoking other methods.

+ * + * @param target The processing instruction target. + * @param data The processing instruction data, or null if + * none is supplied. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DocumentHandler#processingInstruction + */ + public void processingInstruction (String target, String data) + throws SAXException + { + // no op + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of the ErrorHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive notification of a parser warning. + * + *

The default implementation does nothing. Application writers + * may override this method in a subclass to take specific actions + * for each warning, such as inserting the message in a log file or + * printing it to the console.

+ * + * @param e The warning information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#warning + * @see org.xml.sax.SAXParseException + */ + public void warning (SAXParseException e) + throws SAXException + { + // no op + } + + + /** + * Receive notification of a recoverable parser error. + * + *

The default implementation does nothing. Application writers + * may override this method in a subclass to take specific actions + * for each error, such as inserting the message in a log file or + * printing it to the console.

+ * + * @param e The warning information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#warning + * @see org.xml.sax.SAXParseException + */ + public void error (SAXParseException e) + throws SAXException + { + // no op + } + + + /** + * Report a fatal XML parsing error. + * + *

The default implementation throws a SAXParseException. + * Application writers may override this method in a subclass if + * they need to take specific actions for each fatal error (such as + * collecting all of the errors into a single report): in any case, + * the application must stop all regular processing when this + * method is invoked, since the document is no longer reliable, and + * the parser may no longer report parsing events.

+ * + * @param e The error information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#fatalError + * @see org.xml.sax.SAXParseException + */ + public void fatalError (SAXParseException e) + throws SAXException + { + throw e; + } + +} + +// end of HandlerBase.java diff --git a/libjava/org/xml/sax/InputSource.java b/libjava/org/xml/sax/InputSource.java new file mode 100644 index 00000000000..985ca220387 --- /dev/null +++ b/libjava/org/xml/sax/InputSource.java @@ -0,0 +1,321 @@ +// SAX input source. +// No warranty; no copyright -- use this as you will. +// $Id: InputSource.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +import java.io.Reader; +import java.io.InputStream; + +/** + * A single input source for an XML entity. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class allows a SAX application to encapsulate information + * about an input source in a single object, which may include + * a public identifier, a system identifier, a byte stream (possibly + * with a specified encoding), and/or a character stream.

+ * + *

There are two places that the application will deliver this + * input source to the parser: as the argument to the Parser.parse + * method, or as the return value of the EntityResolver.resolveEntity + * method.

+ * + *

The SAX parser will use the InputSource object to determine how + * to read XML input. If there is a character stream available, the + * parser will read that stream directly; if not, the parser will use + * a byte stream, if available; if neither a character stream nor a + * byte stream is available, the parser will attempt to open a URI + * connection to the resource identified by the system + * identifier.

+ * + *

An InputSource object belongs to the application: the SAX parser + * shall never modify it in any way (it may modify a copy if + * necessary).

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser#parse + * @see org.xml.sax.EntityResolver#resolveEntity + * @see java.io.InputStream + * @see java.io.Reader + */ +public class InputSource { + + /** + * Zero-argument default constructor. + * + * @see #setPublicId + * @see #setSystemId + * @see #setByteStream + * @see #setCharacterStream + * @see #setEncoding + */ + public InputSource () + { + } + + + /** + * Create a new input source with a system identifier. + * + *

Applications may use setPublicId to include a + * public identifier as well, or setEncoding to specify + * the character encoding, if known.

+ * + *

If the system identifier is a URL, it must be full resolved.

+ * + * @param systemId The system identifier (URI). + * @see #setPublicId + * @see #setSystemId + * @see #setByteStream + * @see #setEncoding + * @see #setCharacterStream + */ + public InputSource (String systemId) + { + setSystemId(systemId); + } + + + /** + * Create a new input source with a byte stream. + * + *

Application writers may use setSystemId to provide a base + * for resolving relative URIs, setPublicId to include a + * public identifier, and/or setEncoding to specify the object's + * character encoding.

+ * + * @param byteStream The raw byte stream containing the document. + * @see #setPublicId + * @see #setSystemId + * @see #setEncoding + * @see #setByteStream + * @see #setCharacterStream + */ + public InputSource (InputStream byteStream) + { + setByteStream(byteStream); + } + + + /** + * Create a new input source with a character stream. + * + *

Application writers may use setSystemId() to provide a base + * for resolving relative URIs, and setPublicId to include a + * public identifier.

+ * + *

The character stream shall not include a byte order mark.

+ * + * @see #setPublicId + * @see #setSystemId + * @see #setByteStream + * @see #setCharacterStream + */ + public InputSource (Reader characterStream) + { + setCharacterStream(characterStream); + } + + + /** + * Set the public identifier for this input source. + * + *

The public identifier is always optional: if the application + * writer includes one, it will be provided as part of the + * location information.

+ * + * @param publicId The public identifier as a string. + * @see #getPublicId + * @see org.xml.sax.Locator#getPublicId + * @see org.xml.sax.SAXParseException#getPublicId + */ + public void setPublicId (String publicId) + { + this.publicId = publicId; + } + + + /** + * Get the public identifier for this input source. + * + * @return The public identifier, or null if none was supplied. + * @see #setPublicId + */ + public String getPublicId () + { + return publicId; + } + + + /** + * Set the system identifier for this input source. + * + *

The system identifier is optional if there is a byte stream + * or a character stream, but it is still useful to provide one, + * since the application can use it to resolve relative URIs + * and can include it in error messages and warnings (the parser + * will attempt to open a connection to the URI only if + * there is no byte stream or character stream specified).

+ * + *

If the application knows the character encoding of the + * object pointed to by the system identifier, it can register + * the encoding using the setEncoding method.

+ * + *

If the system ID is a URL, it must be fully resolved.

+ * + * @param systemId The system identifier as a string. + * @see #setEncoding + * @see #getSystemId + * @see org.xml.sax.Locator#getSystemId + * @see org.xml.sax.SAXParseException#getSystemId + */ + public void setSystemId (String systemId) + { + this.systemId = systemId; + } + + + /** + * Get the system identifier for this input source. + * + *

The getEncoding method will return the character encoding + * of the object pointed to, or null if unknown.

+ * + *

If the system ID is a URL, it will be fully resolved.

+ * + * @return The system identifier. + * @see #setSystemId + * @see #getEncoding + */ + public String getSystemId () + { + return systemId; + } + + + /** + * Set the byte stream for this input source. + * + *

The SAX parser will ignore this if there is also a character + * stream specified, but it will use a byte stream in preference + * to opening a URI connection itself.

+ * + *

If the application knows the character encoding of the + * byte stream, it should set it with the setEncoding method.

+ * + * @param byteStream A byte stream containing an XML document or + * other entity. + * @see #setEncoding + * @see #getByteStream + * @see #getEncoding + * @see java.io.InputStream + */ + public void setByteStream (InputStream byteStream) + { + this.byteStream = byteStream; + } + + + /** + * Get the byte stream for this input source. + * + *

The getEncoding method will return the character + * encoding for this byte stream, or null if unknown.

+ * + * @return The byte stream, or null if none was supplied. + * @see #getEncoding + * @see #setByteStream + */ + public InputStream getByteStream () + { + return byteStream; + } + + + /** + * Set the character encoding, if known. + * + *

The encoding must be a string acceptable for an + * XML encoding declaration (see section 4.3.3 of the XML 1.0 + * recommendation).

+ * + *

This method has no effect when the application provides a + * character stream.

+ * + * @param encoding A string describing the character encoding. + * @see #setSystemId + * @see #setByteStream + * @see #getEncoding + */ + public void setEncoding (String encoding) + { + this.encoding = encoding; + } + + + /** + * Get the character encoding for a byte stream or URI. + * + * @return The encoding, or null if none was supplied. + * @see #setByteStream + * @see #getSystemId + * @see #getByteStream + */ + public String getEncoding () + { + return encoding; + } + + + /** + * Set the character stream for this input source. + * + *

If there is a character stream specified, the SAX parser + * will ignore any byte stream and will not attempt to open + * a URI connection to the system identifier.

+ * + * @param characterStream The character stream containing the + * XML document or other entity. + * @see #getCharacterStream + * @see java.io.Reader + */ + public void setCharacterStream (Reader characterStream) + { + this.characterStream = characterStream; + } + + + /** + * Get the character stream for this input source. + * + * @return The character stream, or null if none was supplied. + * @see #setCharacterStream + */ + public Reader getCharacterStream () + { + return characterStream; + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + private String publicId; + private String systemId; + private InputStream byteStream; + private String encoding; + private Reader characterStream; + +} + +// end of InputSource.java diff --git a/libjava/org/xml/sax/Locator.java b/libjava/org/xml/sax/Locator.java new file mode 100644 index 00000000000..be55656042e --- /dev/null +++ b/libjava/org/xml/sax/Locator.java @@ -0,0 +1,126 @@ +// SAX locator interface for document events. +// No warranty; no copyright -- use this as you will. +// $Id: Locator.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + + +/** + * Interface for associating a SAX event with a document location. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

If a SAX parser provides location information to the SAX + * application, it does so by implementing this interface and then + * passing an instance to the application using the content + * handler's {@link org.xml.sax.ContentHandler#setDocumentLocator + * setDocumentLocator} method. The application can use the + * object to obtain the location of any other content handler event + * in the XML source document.

+ * + *

Note that the results returned by the object will be valid only + * during the scope of each content handler method: the application + * will receive unpredictable results if it attempts to use the + * locator at any other time.

+ * + *

SAX parsers are not required to supply a locator, but they are + * very strongly encouraged to do so. If the parser supplies a + * locator, it must do so before reporting any other document events. + * If no locator has been set by the time the application receives + * the {@link org.xml.sax.ContentHandler#startDocument startDocument} + * event, the application should assume that a locator is not + * available.

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.ContentHandler#setDocumentLocator + */ +public interface Locator { + + + /** + * Return the public identifier for the current document event. + * + *

The return value is the public identifier of the document + * entity or of the external parsed entity in which the markup + * triggering the event appears.

+ * + * @return A string containing the public identifier, or + * null if none is available. + * @see #getSystemId + */ + public abstract String getPublicId (); + + + /** + * Return the system identifier for the current document event. + * + *

The return value is the system identifier of the document + * entity or of the external parsed entity in which the markup + * triggering the event appears.

+ * + *

If the system identifier is a URL, the parser must resolve it + * fully before passing it to the application.

+ * + * @return A string containing the system identifier, or null + * if none is available. + * @see #getPublicId + */ + public abstract String getSystemId (); + + + /** + * Return the line number where the current document event ends. + * + *

Warning: The return value from the method + * is intended only as an approximation for the sake of error + * reporting; it is not intended to provide sufficient information + * to edit the character content of the original XML document.

+ * + *

The return value is an approximation of the line number + * in the document entity or external parsed entity where the + * markup triggering the event appears.

+ * + *

If possible, the SAX driver should provide the line position + * of the first character after the text associated with the document + * event. The first line in the document is line 1.

+ * + * @return The line number, or -1 if none is available. + * @see #getColumnNumber + */ + public abstract int getLineNumber (); + + + /** + * Return the column number where the current document event ends. + * + *

Warning: The return value from the method + * is intended only as an approximation for the sake of error + * reporting; it is not intended to provide sufficient information + * to edit the character content of the original XML document.

+ * + *

The return value is an approximation of the column number + * in the document entity or external parsed entity where the + * markup triggering the event appears.

+ * + *

If possible, the SAX driver should provide the line position + * of the first character after the text associated with the document + * event.

+ * + *

If possible, the SAX driver should provide the line position + * of the first character after the text associated with the document + * event. The first column in each line is column 1.

+ * + * @return The column number, or -1 if none is available. + * @see #getLineNumber + */ + public abstract int getColumnNumber (); + +} + +// end of Locator.java diff --git a/libjava/org/xml/sax/Parser.java b/libjava/org/xml/sax/Parser.java new file mode 100644 index 00000000000..e775ca97c87 --- /dev/null +++ b/libjava/org/xml/sax/Parser.java @@ -0,0 +1,207 @@ +// SAX parser interface. +// No warranty; no copyright -- use this as you will. +// $Id: Parser.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +import java.io.IOException; +import java.util.Locale; + + +/** + * Basic interface for SAX (Simple API for XML) parsers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This was the main event supplier interface for SAX1; it has + * been replaced in SAX2 by {@link org.xml.sax.XMLReader XMLReader}, + * which includes Namespace support and sophisticated configurability + * and extensibility.

+ * + *

All SAX1 parsers must implement this basic interface: it allows + * applications to register handlers for different types of events + * and to initiate a parse from a URI, or a character stream.

+ * + *

All SAX1 parsers must also implement a zero-argument constructor + * (though other constructors are also allowed).

+ * + *

SAX1 parsers are reusable but not re-entrant: the application + * may reuse a parser object (possibly with a different input source) + * once the first parse has completed successfully, but it may not + * invoke the parse() methods recursively within a parse.

+ * + * @deprecated This interface has been replaced by the SAX2 + * {@link org.xml.sax.XMLReader XMLReader} + * interface, which includes Namespace support. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.EntityResolver + * @see org.xml.sax.DTDHandler + * @see org.xml.sax.DocumentHandler + * @see org.xml.sax.ErrorHandler + * @see org.xml.sax.HandlerBase + * @see org.xml.sax.InputSource + */ +public interface Parser +{ + + /** + * Allow an application to request a locale for errors and warnings. + * + *

SAX parsers are not required to provide localisation for errors + * and warnings; if they cannot support the requested locale, + * however, they must throw a SAX exception. Applications may + * not request a locale change in the middle of a parse.

+ * + * @param locale A Java Locale object. + * @exception org.xml.sax.SAXException Throws an exception + * (using the previous or default locale) if the + * requested locale is not supported. + * @see org.xml.sax.SAXException + * @see org.xml.sax.SAXParseException + */ + public abstract void setLocale (Locale locale) + throws SAXException; + + + /** + * Allow an application to register a custom entity resolver. + * + *

If the application does not register an entity resolver, the + * SAX parser will resolve system identifiers and open connections + * to entities itself (this is the default behaviour implemented in + * HandlerBase).

+ * + *

Applications may register a new or different entity resolver + * in the middle of a parse, and the SAX parser must begin using + * the new resolver immediately.

+ * + * @param resolver The object for resolving entities. + * @see EntityResolver + * @see HandlerBase + */ + public abstract void setEntityResolver (EntityResolver resolver); + + + /** + * Allow an application to register a DTD event handler. + * + *

If the application does not register a DTD handler, all DTD + * events reported by the SAX parser will be silently + * ignored (this is the default behaviour implemented by + * HandlerBase).

+ * + *

Applications may register a new or different + * handler in the middle of a parse, and the SAX parser must + * begin using the new handler immediately.

+ * + * @param handler The DTD handler. + * @see DTDHandler + * @see HandlerBase + */ + public abstract void setDTDHandler (DTDHandler handler); + + + /** + * Allow an application to register a document event handler. + * + *

If the application does not register a document handler, all + * document events reported by the SAX parser will be silently + * ignored (this is the default behaviour implemented by + * HandlerBase).

+ * + *

Applications may register a new or different handler in the + * middle of a parse, and the SAX parser must begin using the new + * handler immediately.

+ * + * @param handler The document handler. + * @see DocumentHandler + * @see HandlerBase + */ + public abstract void setDocumentHandler (DocumentHandler handler); + + + /** + * Allow an application to register an error event handler. + * + *

If the application does not register an error event handler, + * all error events reported by the SAX parser will be silently + * ignored, except for fatalError, which will throw a SAXException + * (this is the default behaviour implemented by HandlerBase).

+ * + *

Applications may register a new or different handler in the + * middle of a parse, and the SAX parser must begin using the new + * handler immediately.

+ * + * @param handler The error handler. + * @see ErrorHandler + * @see SAXException + * @see HandlerBase + */ + public abstract void setErrorHandler (ErrorHandler handler); + + + /** + * Parse an XML document. + * + *

The application can use this method to instruct the SAX parser + * to begin parsing an XML document from any valid input + * source (a character stream, a byte stream, or a URI).

+ * + *

Applications may not invoke this method while a parse is in + * progress (they should create a new Parser instead for each + * additional XML document). Once a parse is complete, an + * application may reuse the same Parser object, possibly with a + * different input source.

+ * + * @param source The input source for the top-level of the + * XML document. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see org.xml.sax.InputSource + * @see #parse(java.lang.String) + * @see #setEntityResolver + * @see #setDTDHandler + * @see #setDocumentHandler + * @see #setErrorHandler + */ + public abstract void parse (InputSource source) + throws SAXException, IOException; + + + /** + * Parse an XML document from a system identifier (URI). + * + *

This method is a shortcut for the common case of reading a + * document from a system identifier. It is the exact + * equivalent of the following:

+ * + * 
+     * parse(new InputSource(systemId));
+     *
+ * + *

If the system identifier is a URL, it must be fully resolved + * by the application before it is passed to the parser.

+ * + * @param systemId The system identifier (URI). + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see #parse(org.xml.sax.InputSource) + */ + public abstract void parse (String systemId) + throws SAXException, IOException; + +} + +// end of Parser.java diff --git a/libjava/org/xml/sax/SAXException.java b/libjava/org/xml/sax/SAXException.java new file mode 100644 index 00000000000..69537e91706 --- /dev/null +++ b/libjava/org/xml/sax/SAXException.java @@ -0,0 +1,144 @@ +// SAX exception class. +// No warranty; no copyright -- use this as you will. +// $Id: SAXException.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +/** + * Encapsulate a general SAX error or warning. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class can contain basic error or warning information from + * either the XML parser or the application: a parser writer or + * application writer can subclass it to provide additional + * functionality. SAX handlers may throw this exception or + * any exception subclassed from it.

+ * + *

If the application needs to pass through other types of + * exceptions, it must wrap those exceptions in a SAXException + * or an exception derived from a SAXException.

+ * + *

If the parser or application needs to include information about a + * specific location in an XML document, it should use the + * {@link org.xml.sax.SAXParseException SAXParseException} subclass.

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.SAXParseException + */ +public class SAXException extends Exception { + + + /** + * Create a new SAXException. + * + * @param message The error or warning message. + * @see org.xml.sax.Parser#setLocale + */ + public SAXException (String message) { + super(message); + this.exception = null; + } + + + /** + * Create a new SAXException wrapping an existing exception. + * + *

The existing exception will be embedded in the new + * one, and its message will become the default message for + * the SAXException.

+ * + * @param e The exception to be wrapped in a SAXException. + */ + public SAXException (Exception e) + { + super(); + this.exception = e; + } + + + /** + * Create a new SAXException from an existing exception. + * + *

The existing exception will be embedded in the new + * one, but the new exception will have its own message.

+ * + * @param message The detail message. + * @param e The exception to be wrapped in a SAXException. + * @see org.xml.sax.Parser#setLocale + */ + public SAXException (String message, Exception e) + { + super(message); + this.exception = e; + } + + + /** + * Return a detail message for this exception. + * + *

If there is an embedded exception, and if the SAXException + * has no detail message of its own, this method will return + * the detail message from the embedded exception.

+ * + * @return The error or warning message. + * @see org.xml.sax.Parser#setLocale + */ + public String getMessage () + { + String message = super.getMessage(); + + if (message == null && exception != null) { + return exception.getMessage(); + } else { + return message; + } + } + + + /** + * Return the embedded exception, if any. + * + * @return The embedded exception, or null if there is none. + */ + public Exception getException () + { + return exception; + } + + + /** + * Override toString to pick up any embedded exception. + * + * @return A string representation of this exception. + */ + public String toString () + { + if (exception != null) { + return exception.toString(); + } else { + return super.toString(); + } + } + + + + ////////////////////////////////////////////////////////////////////// + // Internal state. + ////////////////////////////////////////////////////////////////////// + + + /** + * @serial The embedded exception if tunnelling, or null. + */ + private Exception exception; + +} + +// end of SAXException.java diff --git a/libjava/org/xml/sax/SAXNotRecognizedException.java b/libjava/org/xml/sax/SAXNotRecognizedException.java new file mode 100644 index 00000000000..0fbc4c85ba9 --- /dev/null +++ b/libjava/org/xml/sax/SAXNotRecognizedException.java @@ -0,0 +1,44 @@ +// SAXNotRecognizedException.java - unrecognized feature or value. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: SAXNotRecognizedException.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + + +package org.xml.sax; + + +/** + * Exception class for an unrecognized identifier. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

An XMLReader will throw this exception when it finds an + * unrecognized feature or property identifier; SAX applications and + * extensions may use this class for other, similar purposes.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.SAXNotSupportedException + */ +public class SAXNotRecognizedException extends SAXException +{ + + /** + * Construct a new exception with the given message. + * + * @param message The text message of the exception. + */ + public SAXNotRecognizedException (String message) + { + super(message); + } + +} + +// end of SAXNotRecognizedException.java diff --git a/libjava/org/xml/sax/SAXNotSupportedException.java b/libjava/org/xml/sax/SAXNotSupportedException.java new file mode 100644 index 00000000000..3376d47cc5b --- /dev/null +++ b/libjava/org/xml/sax/SAXNotSupportedException.java @@ -0,0 +1,44 @@ +// SAXNotSupportedException.java - unsupported feature or value. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: SAXNotSupportedException.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + + +package org.xml.sax; + +/** + * Exception class for an unsupported operation. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

An XMLReader will throw this exception when it recognizes a + * feature or property identifier, but cannot perform the requested + * operation (setting a state or value). Other SAX2 applications and + * extensions may use this class for similar purposes.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.SAXNotRecognizedException + */ +public class SAXNotSupportedException extends SAXException +{ + + /** + * Construct a new exception with the given message. + * + * @param message The text message of the exception. + */ + public SAXNotSupportedException (String message) + { + super(message); + } + +} + +// end of SAXNotSupportedException.java diff --git a/libjava/org/xml/sax/SAXParseException.java b/libjava/org/xml/sax/SAXParseException.java new file mode 100644 index 00000000000..bcfb94ebd25 --- /dev/null +++ b/libjava/org/xml/sax/SAXParseException.java @@ -0,0 +1,264 @@ +// SAX exception class. +// No warranty; no copyright -- use this as you will. +// $Id: SAXParseException.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +/** + * Encapsulate an XML parse error or warning. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This exception will include information for locating the error + * in the original XML document. Note that although the application + * will receive a SAXParseException as the argument to the handlers + * in the {@link org.xml.sax.ErrorHandler ErrorHandler} interface, + * the application is not actually required to throw the exception; + * instead, it can simply read the information in it and take a + * different action.

+ * + *

Since this exception is a subclass of {@link org.xml.sax.SAXException + * SAXException}, it inherits the ability to wrap another exception.

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.SAXException + * @see org.xml.sax.Locator + * @see org.xml.sax.ErrorHandler + */ +public class SAXParseException extends SAXException { + + + ////////////////////////////////////////////////////////////////////// + // Constructors. + ////////////////////////////////////////////////////////////////////// + + + /** + * Create a new SAXParseException from a message and a Locator. + * + *

This constructor is especially useful when an application is + * creating its own exception from within a {@link org.xml.sax.ContentHandler + * ContentHandler} callback.

+ * + * @param message The error or warning message. + * @param locator The locator object for the error or warning (may be + * null). + * @see org.xml.sax.Locator + * @see org.xml.sax.Parser#setLocale + */ + public SAXParseException (String message, Locator locator) { + super(message); + if (locator != null) { + init(locator.getPublicId(), locator.getSystemId(), + locator.getLineNumber(), locator.getColumnNumber()); + } else { + init(null, null, -1, -1); + } + } + + + /** + * Wrap an existing exception in a SAXParseException. + * + *

This constructor is especially useful when an application is + * creating its own exception from within a {@link org.xml.sax.ContentHandler + * ContentHandler} callback, and needs to wrap an existing exception that is not a + * subclass of {@link org.xml.sax.SAXException SAXException}.

+ * + * @param message The error or warning message, or null to + * use the message from the embedded exception. + * @param locator The locator object for the error or warning (may be + * null). + * @param e Any exception. + * @see org.xml.sax.Locator + * @see org.xml.sax.Parser#setLocale + */ + public SAXParseException (String message, Locator locator, + Exception e) { + super(message, e); + if (locator != null) { + init(locator.getPublicId(), locator.getSystemId(), + locator.getLineNumber(), locator.getColumnNumber()); + } else { + init(null, null, -1, -1); + } + } + + + /** + * Create a new SAXParseException. + * + *

This constructor is most useful for parser writers.

+ * + *

If the system identifier is a URL, the parser must resolve it + * fully before creating the exception.

+ * + * @param message The error or warning message. + * @param publicId The public identifer of the entity that generated + * the error or warning. + * @param systemId The system identifer of the entity that generated + * the error or warning. + * @param lineNumber The line number of the end of the text that + * caused the error or warning. + * @param columnNumber The column number of the end of the text that + * cause the error or warning. + * @see org.xml.sax.Parser#setLocale + */ + public SAXParseException (String message, String publicId, String systemId, + int lineNumber, int columnNumber) + { + super(message); + init(publicId, systemId, lineNumber, columnNumber); + } + + + /** + * Create a new SAXParseException with an embedded exception. + * + *

This constructor is most useful for parser writers who + * need to wrap an exception that is not a subclass of + * {@link org.xml.sax.SAXException SAXException}.

+ * + *

If the system identifier is a URL, the parser must resolve it + * fully before creating the exception.

+ * + * @param message The error or warning message, or null to use + * the message from the embedded exception. + * @param publicId The public identifer of the entity that generated + * the error or warning. + * @param systemId The system identifer of the entity that generated + * the error or warning. + * @param lineNumber The line number of the end of the text that + * caused the error or warning. + * @param columnNumber The column number of the end of the text that + * cause the error or warning. + * @param e Another exception to embed in this one. + * @see org.xml.sax.Parser#setLocale + */ + public SAXParseException (String message, String publicId, String systemId, + int lineNumber, int columnNumber, Exception e) + { + super(message, e); + init(publicId, systemId, lineNumber, columnNumber); + } + + + /** + * Internal initialization method. + * + * @param publicId The public identifier of the entity which generated the exception, + * or null. + * @param systemId The system identifier of the entity which generated the exception, + * or null. + * @param lineNumber The line number of the error, or -1. + * @param columnNumber The column number of the error, or -1. + */ + private void init (String publicId, String systemId, + int lineNumber, int columnNumber) + { + this.publicId = publicId; + this.systemId = systemId; + this.lineNumber = lineNumber; + this.columnNumber = columnNumber; + } + + + /** + * Get the public identifier of the entity where the exception occurred. + * + * @return A string containing the public identifier, or null + * if none is available. + * @see org.xml.sax.Locator#getPublicId + */ + public String getPublicId () + { + return this.publicId; + } + + + /** + * Get the system identifier of the entity where the exception occurred. + * + *

If the system identifier is a URL, it will be resolved + * fully.

+ * + * @return A string containing the system identifier, or null + * if none is available. + * @see org.xml.sax.Locator#getSystemId + */ + public String getSystemId () + { + return this.systemId; + } + + + /** + * The line number of the end of the text where the exception occurred. + * + * @return An integer representing the line number, or -1 + * if none is available. + * @see org.xml.sax.Locator#getLineNumber + */ + public int getLineNumber () + { + return this.lineNumber; + } + + + /** + * The column number of the end of the text where the exception occurred. + * + *

The first column in a line is position 1.

+ * + * @return An integer representing the column number, or -1 + * if none is available. + * @see org.xml.sax.Locator#getColumnNumber + */ + public int getColumnNumber () + { + return this.columnNumber; + } + + + + ////////////////////////////////////////////////////////////////////// + // Internal state. + ////////////////////////////////////////////////////////////////////// + + + /** + * @serial The public identifier, or null. + * @see #getPublicId + */ + private String publicId; + + + /** + * @serial The system identifier, or null. + * @see #getSystemId + */ + private String systemId; + + + /** + * @serial The line number, or -1. + * @see #getLineNumber + */ + private int lineNumber; + + + /** + * @serial The column number, or -1. + * @see #getColumnNumber + */ + private int columnNumber; + +} + +// end of SAXParseException.java diff --git a/libjava/org/xml/sax/XMLFilter.java b/libjava/org/xml/sax/XMLFilter.java new file mode 100644 index 00000000000..b10e8647ff0 --- /dev/null +++ b/libjava/org/xml/sax/XMLFilter.java @@ -0,0 +1,65 @@ +// XMLFilter.java - filter SAX2 events. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: XMLFilter.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + + +package org.xml.sax; + + +/** + * Interface for an XML filter. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

An XML filter is like an XML reader, except that it obtains its + * events from another XML reader rather than a primary source like + * an XML document or database. Filters can modify a stream of + * events as they pass on to the final application.

+ * + *

The XMLFilterImpl helper class provides a convenient base + * for creating SAX2 filters, by passing on all {@link org.xml.sax.EntityResolver + * EntityResolver}, {@link org.xml.sax.DTDHandler DTDHandler}, + * {@link org.xml.sax.ContentHandler ContentHandler} and {@link org.xml.sax.ErrorHandler + * ErrorHandler} events automatically.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.helpers.XMLFilterImpl + */ +public interface XMLFilter extends XMLReader +{ + + /** + * Set the parent reader. + * + *

This method allows the application to link the filter to + * a parent reader (which may be another filter). The argument + * may not be null.

+ * + * @param parent The parent reader. + */ + public abstract void setParent (XMLReader parent); + + + /** + * Get the parent reader. + * + *

This method allows the application to query the parent + * reader (which may be another filter). It is generally a + * bad idea to perform any operations on the parent reader + * directly: they should all pass through this filter.

+ * + * @return The parent filter, or null if none has been set. + */ + public abstract XMLReader getParent (); + +} + +// end of XMLFilter.java diff --git a/libjava/org/xml/sax/XMLReader.java b/libjava/org/xml/sax/XMLReader.java new file mode 100644 index 00000000000..26e382b9fa9 --- /dev/null +++ b/libjava/org/xml/sax/XMLReader.java @@ -0,0 +1,415 @@ +// XMLReader.java - read an XML document. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: XMLReader.java,v 1.1 2000/10/02 02:43:17 sboag Exp $ + +package org.xml.sax; + +import java.io.IOException; + + +/** + * Interface for reading an XML document using callbacks. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

Note: despite its name, this interface does + * not extend the standard Java {@link java.io.Reader Reader} + * interface, because reading XML is a fundamentally different activity + * than reading character data.

+ * + *

XMLReader is the interface that an XML parser's SAX2 driver must + * implement. This interface allows an application to set and + * query features and properties in the parser, to register + * event handlers for document processing, and to initiate + * a document parse.

+ * + *

All SAX interfaces are assumed to be synchronous: the + * {@link #parse parse} methods must not return until parsing + * is complete, and readers must wait for an event-handler callback + * to return before reporting the next event.

+ * + *

This interface replaces the (now deprecated) SAX 1.0 {@link + * org.xml.sax.Parser Parser} interface. The XMLReader interface + * contains two important enhancements over the old Parser + * interface:

+ * + *
    + *
  1. it adds a standard way to query and set features and + * properties; and
    2. + *
  2. it adds Namespace support, which is required for many + * higher-level XML standards.
    3. + *
+ * + *

There are adapters available to convert a SAX1 Parser to + * a SAX2 XMLReader and vice-versa.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.XMLFilter + * @see org.xml.sax.helpers.ParserAdapter + * @see org.xml.sax.helpers.XMLReaderAdapter + */ +public interface XMLReader +{ + + + //////////////////////////////////////////////////////////////////// + // Configuration. + //////////////////////////////////////////////////////////////////// + + + /** + * Look up the value of a feature. + * + *

The feature name is any fully-qualified URI. It is + * possible for an XMLReader to recognize a feature name but + * to be unable to return its value; this is especially true + * in the case of an adapter for a SAX1 Parser, which has + * no way of knowing whether the underlying parser is + * performing validation or expanding external entities.

+ * + *

All XMLReaders are required to recognize the + * http://xml.org/sax/features/namespaces and the + * http://xml.org/sax/features/namespace-prefixes feature names.

+ * + *

Some feature values may be available only in specific + * contexts, such as before, during, or after a parse.

+ * + *

Typical usage is something like this:

+ * + * 
+     * XMLReader r = new MySAXDriver();
+     *
+     *                         // try to activate validation
+     * try {
+     *   r.setFeature("http://xml.org/sax/features/validation", true);
+     * } catch (SAXException e) {
+     *   System.err.println("Cannot activate validation."); 
+     * }
+     *
+     *                         // register event handlers
+     * r.setContentHandler(new MyContentHandler());
+     * r.setErrorHandler(new MyErrorHandler());
+     *
+     *                         // parse the first document
+     * try {
+     *   r.parse("http://www.foo.com/mydoc.xml");
+     * } catch (IOException e) {
+     *   System.err.println("I/O exception reading XML document");
+     * } catch (SAXException e) {
+     *   System.err.println("XML exception reading document.");
+     * }
+     *
+ * + *

Implementors are free (and encouraged) to invent their own features, + * using names built on their own URIs.

+ * + * @param name The feature name, which is a fully-qualified URI. + * @return The current state of the feature (true or false). + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the feature name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the feature name but + * cannot determine its value at this time. + * @see #setFeature + */ + public boolean getFeature (String name) + throws SAXNotRecognizedException, SAXNotSupportedException; + + + /** + * Set the state of a feature. + * + *

The feature name is any fully-qualified URI. It is + * possible for an XMLReader to recognize a feature name but + * to be unable to set its value; this is especially true + * in the case of an adapter for a SAX1 {@link org.xml.sax.Parser Parser}, + * which has no way of affecting whether the underlying parser is + * validating, for example.

+ * + *

All XMLReaders are required to support setting + * http://xml.org/sax/features/namespaces to true and + * http://xml.org/sax/features/namespace-prefixes to false.

+ * + *

Some feature values may be immutable or mutable only + * in specific contexts, such as before, during, or after + * a parse.

+ * + * @param name The feature name, which is a fully-qualified URI. + * @param state The requested state of the feature (true or false). + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the feature name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the feature name but + * cannot set the requested value. + * @see #getFeature + */ + public void setFeature (String name, boolean value) + throws SAXNotRecognizedException, SAXNotSupportedException; + + + /** + * Look up the value of a property. + * + *

The property name is any fully-qualified URI. It is + * possible for an XMLReader to recognize a property name but + * to be unable to return its state; this is especially true + * in the case of an adapter for a SAX1 {@link org.xml.sax.Parser + * Parser}.

+ * + *

XMLReaders are not required to recognize any specific + * property names, though an initial core set is documented for + * SAX2.

+ * + *

Some property values may be available only in specific + * contexts, such as before, during, or after a parse.

+ * + *

Implementors are free (and encouraged) to invent their own properties, + * using names built on their own URIs.

+ * + * @param name The property name, which is a fully-qualified URI. + * @return The current value of the property. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the property name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the property name but + * cannot determine its value at this time. + * @see #setProperty + */ + public Object getProperty (String name) + throws SAXNotRecognizedException, SAXNotSupportedException; + + + /** + * Set the value of a property. + * + *

The property name is any fully-qualified URI. It is + * possible for an XMLReader to recognize a property name but + * to be unable to set its value; this is especially true + * in the case of an adapter for a SAX1 {@link org.xml.sax.Parser + * Parser}.

+ * + *

XMLReaders are not required to recognize setting + * any specific property names, though a core set is provided with + * SAX2.

+ * + *

Some property values may be immutable or mutable only + * in specific contexts, such as before, during, or after + * a parse.

+ * + *

This method is also the standard mechanism for setting + * extended handlers.

+ * + * @param name The property name, which is a fully-qualified URI. + * @param state The requested value for the property. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the property name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the property name but + * cannot set the requested value. + */ + public void setProperty (String name, Object value) + throws SAXNotRecognizedException, SAXNotSupportedException; + + + + //////////////////////////////////////////////////////////////////// + // Event handlers. + //////////////////////////////////////////////////////////////////// + + + /** + * Allow an application to register an entity resolver. + * + *

If the application does not register an entity resolver, + * the XMLReader will perform its own default resolution.

+ * + *

Applications may register a new or different resolver in the + * middle of a parse, and the SAX parser must begin using the new + * resolver immediately.

+ * + * @param resolver The entity resolver. + * @exception java.lang.NullPointerException If the resolver + * argument is null. + * @see #getEntityResolver + */ + public void setEntityResolver (EntityResolver resolver); + + + /** + * Return the current entity resolver. + * + * @return The current entity resolver, or null if none + * has been registered. + * @see #setEntityResolver + */ + public EntityResolver getEntityResolver (); + + + /** + * Allow an application to register a DTD event handler. + * + *

If the application does not register a DTD handler, all DTD + * events reported by the SAX parser will be silently ignored.

+ * + *

Applications may register a new or different handler in the + * middle of a parse, and the SAX parser must begin using the new + * handler immediately.

+ * + * @param handler The DTD handler. + * @exception java.lang.NullPointerException If the handler + * argument is null. + * @see #getDTDHandler + */ + public void setDTDHandler (DTDHandler handler); + + + /** + * Return the current DTD handler. + * + * @return The current DTD handler, or null if none + * has been registered. + * @see #setDTDHandler + */ + public DTDHandler getDTDHandler (); + + + /** + * Allow an application to register a content event handler. + * + *

If the application does not register a content handler, all + * content events reported by the SAX parser will be silently + * ignored.

+ * + *

Applications may register a new or different handler in the + * middle of a parse, and the SAX parser must begin using the new + * handler immediately.

+ * + * @param handler The content handler. + * @exception java.lang.NullPointerException If the handler + * argument is null. + * @see #getContentHandler + */ + public void setContentHandler (ContentHandler handler); + + + /** + * Return the current content handler. + * + * @return The current content handler, or null if none + * has been registered. + * @see #setContentHandler + */ + public ContentHandler getContentHandler (); + + + /** + * Allow an application to register an error event handler. + * + *

If the application does not register an error handler, all + * error events reported by the SAX parser will be silently + * ignored; however, normal processing may not continue. It is + * highly recommended that all SAX applications implement an + * error handler to avoid unexpected bugs.

+ * + *

Applications may register a new or different handler in the + * middle of a parse, and the SAX parser must begin using the new + * handler immediately.

+ * + * @param handler The error handler. + * @exception java.lang.NullPointerException If the handler + * argument is null. + * @see #getErrorHandler + */ + public void setErrorHandler (ErrorHandler handler); + + + /** + * Return the current error handler. + * + * @return The current error handler, or null if none + * has been registered. + * @see #setErrorHandler + */ + public ErrorHandler getErrorHandler (); + + + + //////////////////////////////////////////////////////////////////// + // Parsing. + //////////////////////////////////////////////////////////////////// + + /** + * Parse an XML document. + * + *

The application can use this method to instruct the XML + * reader to begin parsing an XML document from any valid input + * source (a character stream, a byte stream, or a URI).

+ * + *

Applications may not invoke this method while a parse is in + * progress (they should create a new XMLReader instead for each + * nested XML document). Once a parse is complete, an + * application may reuse the same XMLReader object, possibly with a + * different input source.

+ * + *

During the parse, the XMLReader will provide information + * about the XML document through the registered event + * handlers.

+ * + *

This method is synchronous: it will not return until parsing + * has ended. If a client application wants to terminate + * parsing early, it should throw an exception.

+ * + * @param source The input source for the top-level of the + * XML document. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see org.xml.sax.InputSource + * @see #parse(java.lang.String) + * @see #setEntityResolver + * @see #setDTDHandler + * @see #setContentHandler + * @see #setErrorHandler + */ + public void parse (InputSource input) + throws IOException, SAXException; + + + /** + * Parse an XML document from a system identifier (URI). + * + *

This method is a shortcut for the common case of reading a + * document from a system identifier. It is the exact + * equivalent of the following:

+ * + * 
+     * parse(new InputSource(systemId));
+     *
+ * + *

If the system identifier is a URL, it must be fully resolved + * by the application before it is passed to the parser.

+ * + * @param systemId The system identifier (URI). + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see #parse(org.xml.sax.InputSource) + */ + public void parse (String systemId) + throws IOException, SAXException; + +} + +// end of XMLReader.java diff --git a/libjava/org/xml/sax/ext/DeclHandler.java b/libjava/org/xml/sax/ext/DeclHandler.java new file mode 100644 index 00000000000..1fede3428de --- /dev/null +++ b/libjava/org/xml/sax/ext/DeclHandler.java @@ -0,0 +1,131 @@ +// DeclHandler.java - Optional handler for DTD declaration events. +// Public Domain: no warranty. +// $Id: DeclHandler.java,v 1.1 2000/10/02 02:43:19 sboag Exp $ + +package org.xml.sax.ext; + +import org.xml.sax.SAXException; + + +/** + * SAX2 extension handler for DTD declaration events. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This is an optional extension handler for SAX2 to provide + * information about DTD declarations in an XML document. XML + * readers are not required to support this handler.

+ * + *

Note that data-related DTD declarations (unparsed entities and + * notations) are already reported through the {@link + * org.xml.sax.DTDHandler DTDHandler} interface.

+ * + *

If you are using the declaration handler together with a lexical + * handler, all of the events will occur between the + * {@link org.xml.sax.ext.LexicalHandler#startDTD startDTD} and the + * {@link org.xml.sax.ext.LexicalHandler#endDTD endDTD} events.

+ * + *

To set the DeclHandler for an XML reader, use the + * {@link org.xml.sax.XMLReader#setProperty setProperty} method + * with the propertyId "http://xml.org/sax/handlers/DeclHandler". + * If the reader does not support declaration events, it will throw a + * {@link org.xml.sax.SAXNotRecognizedException SAXNotRecognizedException} + * or a + * {@link org.xml.sax.SAXNotSupportedException SAXNotSupportedException} + * when you attempt to register the handler.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0beta + * @see org.xml.sax.XMLReader + */ +public interface DeclHandler +{ + + /** + * Report an element type declaration. + * + *

The content model will consist of the string "EMPTY", the + * string "ANY", or a parenthesised group, optionally followed + * by an occurrence indicator. The model will be normalized so + * that all whitespace is removed,and will include the enclosing + * parentheses.

+ * + * @param name The element type name. + * @param model The content model as a normalized string. + * @exception SAXException The application may raise an exception. + */ + public abstract void elementDecl (String name, String model) + throws SAXException; + + + /** + * Report an attribute type declaration. + * + *

Only the effective (first) declaration for an attribute will + * be reported. The type will be one of the strings "CDATA", + * "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", + * "ENTITIES", or "NOTATION", or a parenthesized token group with + * the separator "|" and all whitespace removed.

+ * + * @param eName The name of the associated element. + * @param aName The name of the attribute. + * @param type A string representing the attribute type. + * @param valueDefault A string representing the attribute default + * ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if + * none of these applies. + * @param value A string representing the attribute's default value, + * or null if there is none. + * @exception SAXException The application may raise an exception. + */ + public abstract void attributeDecl (String eName, + String aName, + String type, + String valueDefault, + String value) + throws SAXException; + + + /** + * Report an internal entity declaration. + * + *

Only the effective (first) declaration for each entity + * will be reported.

+ * + * @param name The name of the entity. If it is a parameter + * entity, the name will begin with '%'. + * @param value The replacement text of the entity. + * @exception SAXException The application may raise an exception. + * @see #externalEntityDecl + * @see org.xml.sax.DTDHandler#unparsedEntityDecl + */ + public abstract void internalEntityDecl (String name, String value) + throws SAXException; + + + /** + * Report a parsed external entity declaration. + * + *

Only the effective (first) declaration for each entity + * will be reported.

+ * + * @param name The name of the entity. If it is a parameter + * entity, the name will begin with '%'. + * @param publicId The declared public identifier of the entity, or + * null if none was declared. + * @param systemId The declared system identifier of the entity. + * @exception SAXException The application may raise an exception. + * @see #internalEntityDecl + * @see org.xml.sax.DTDHandler#unparsedEntityDecl + */ + public abstract void externalEntityDecl (String name, String publicId, + String systemId) + throws SAXException; + +} + +// end of DeclHandler.java diff --git a/libjava/org/xml/sax/ext/LexicalHandler.java b/libjava/org/xml/sax/ext/LexicalHandler.java new file mode 100644 index 00000000000..4ac1617ca00 --- /dev/null +++ b/libjava/org/xml/sax/ext/LexicalHandler.java @@ -0,0 +1,161 @@ +// LexicalHandler.java - optional handler for lexical parse events. +// Public Domain: no warranty. +// $Id: LexicalHandler.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.ext; + +import org.xml.sax.SAXException; + +/** + * SAX2 extension handler for lexical events. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This is an optional extension handler for SAX2 to provide + * lexical information about an XML document, such as comments + * and CDATA section boundaries; XML readers are not required to + * support this handler.

+ * + *

The events in the lexical handler apply to the entire document, + * not just to the document element, and all lexical handler events + * must appear between the content handler's startDocument and + * endDocument events.

+ * + *

To set the LexicalHandler for an XML reader, use the + * {@link org.xml.sax.XMLReader#setProperty setProperty} method + * with the propertyId "http://xml.org/sax/handlers/LexicalHandler". + * If the reader does not support lexical events, it will throw a + * {@link org.xml.sax.SAXNotRecognizedException SAXNotRecognizedException} + * or a + * {@link org.xml.sax.SAXNotSupportedException SAXNotSupportedException} + * when you attempt to register the handler.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0beta + * @see org.xml.sax.XMLReader#setProperty + * @see org.xml.sax.SAXNotRecognizedException + * @see org.xml.sax.SAXNotSupportedException + */ +public interface LexicalHandler +{ + + /** + * Report the start of DTD declarations, if any. + * + *

Any declarations are assumed to be in the internal subset + * unless otherwise indicated by a {@link #startEntity startEntity} + * event.

+ * + *

Note that the start/endDTD events will appear within + * the start/endDocument events from ContentHandler and + * before the first startElement event.

+ * + * @param name The document type name. + * @param publicId The declared public identifier for the + * external DTD subset, or null if none was declared. + * @param systemId The declared system identifier for the + * external DTD subset, or null if none was declared. + * @exception SAXException The application may raise an + * exception. + * @see #endDTD + * @see #startEntity + */ + public abstract void startDTD (String name, String publicId, + String systemId) + throws SAXException; + + + /** + * Report the end of DTD declarations. + * + * @exception SAXException The application may raise an exception. + * @see #startDTD + */ + public abstract void endDTD () + throws SAXException; + + + /** + * Report the beginning of an entity in content. + * + *

NOTE: entity references in attribute + * values -- and the start and end of the document entity -- + * are never reported.

+ * + *

The start and end of the external DTD subset are reported + * using the pseudo-name "[dtd]". All other events must be + * properly nested within start/end entity events.

+ * + *

Note that skipped entities will be reported through the + * {@link org.xml.sax.ContentHandler#skippedEntity skippedEntity} + * event, which is part of the ContentHandler interface.

+ * + * @param name The name of the entity. If it is a parameter + * entity, the name will begin with '%'. + * @exception SAXException The application may raise an exception. + * @see #endEntity + * @see org.xml.sax.ext.DeclHandler#internalEntityDecl + * @see org.xml.sax.ext.DeclHandler#externalEntityDecl + */ + public abstract void startEntity (String name) + throws SAXException; + + + /** + * Report the end of an entity. + * + * @param name The name of the entity that is ending. + * @exception SAXException The application may raise an exception. + * @see #startEntity + */ + public abstract void endEntity (String name) + throws SAXException; + + + /** + * Report the start of a CDATA section. + * + *

The contents of the CDATA section will be reported through + * the regular {@link org.xml.sax.ContentHandler#characters + * characters} event.

+ * + * @exception SAXException The application may raise an exception. + * @see #endCDATA + */ + public abstract void startCDATA () + throws SAXException; + + + /** + * Report the end of a CDATA section. + * + * @exception SAXException The application may raise an exception. + * @see #startCDATA + */ + public abstract void endCDATA () + throws SAXException; + + + /** + * Report an XML comment anywhere in the document. + * + *

This callback will be used for comments inside or outside the + * document element, including comments in the external DTD + * subset (if read).

+ * + * @param ch An array holding the characters in the comment. + * @param start The starting position in the array. + * @param length The number of characters to use from the array. + * @exception SAXException The application may raise an exception. + */ + public abstract void comment (char ch[], int start, int length) + throws SAXException; + +} + +// end of LexicalHandler.java diff --git a/libjava/org/xml/sax/helpers/AttributeListImpl.java b/libjava/org/xml/sax/helpers/AttributeListImpl.java new file mode 100644 index 00000000000..69754728c1f --- /dev/null +++ b/libjava/org/xml/sax/helpers/AttributeListImpl.java @@ -0,0 +1,310 @@ +// SAX default implementation for AttributeList. +// No warranty; no copyright -- use this as you will. +// $Id: AttributeListImpl.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import org.xml.sax.AttributeList; + +import java.util.Vector; + + +/** + * Default implementation for AttributeList. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

AttributeList implements the deprecated SAX1 {@link + * org.xml.sax.AttributeList AttributeList} interface, and has been + * replaced by the new SAX2 {@link org.xml.sax.helpers.AttributesImpl + * AttributesImpl} interface.

+ * + *

This class provides a convenience implementation of the SAX + * {@link org.xml.sax.AttributeList AttributeList} interface. This + * implementation is useful both for SAX parser writers, who can use + * it to provide attributes to the application, and for SAX application + * writers, who can use it to create a persistent copy of an element's + * attribute specifications:

+ * + * 
+ * private AttributeList myatts;
+ *
+ * public void startElement (String name, AttributeList atts)
+ * {
+ *              // create a persistent copy of the attribute list
+ *              // for use outside this method
+ *   myatts = new AttributeListImpl(atts);
+ *   [...]
+ * }
+ *
+ * + *

Please note that SAX parsers are not required to use this + * class to provide an implementation of AttributeList; it is + * supplied only as an optional convenience. In particular, + * parser writers are encouraged to invent more efficient + * implementations.

+ * + * @deprecated This class implements a deprecated interface, + * {@link org.xml.sax.AttributeList AttributeList}; + * that interface has been replaced by + * {@link org.xml.sax.Attributes Attributes}, + * which is implemented in the + * {@link org.xml.sax.helpers.AttributesImpl + * AttributesImpl} helper class. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.AttributeList + * @see org.xml.sax.DocumentHandler#startElement + */ +public class AttributeListImpl implements AttributeList +{ + + /** + * Create an empty attribute list. + * + *

This constructor is most useful for parser writers, who + * will use it to create a single, reusable attribute list that + * can be reset with the clear method between elements.

+ * + * @see #addAttribute + * @see #clear + */ + public AttributeListImpl () + { + } + + + /** + * Construct a persistent copy of an existing attribute list. + * + *

This constructor is most useful for application writers, + * who will use it to create a persistent copy of an existing + * attribute list.

+ * + * @param atts The attribute list to copy + * @see org.xml.sax.DocumentHandler#startElement + */ + public AttributeListImpl (AttributeList atts) + { + setAttributeList(atts); + } + + + + //////////////////////////////////////////////////////////////////// + // Methods specific to this class. + //////////////////////////////////////////////////////////////////// + + + /** + * Set the attribute list, discarding previous contents. + * + *

This method allows an application writer to reuse an + * attribute list easily.

+ * + * @param atts The attribute list to copy. + */ + public void setAttributeList (AttributeList atts) + { + int count = atts.getLength(); + + clear(); + + for (int i = 0; i < count; i++) { + addAttribute(atts.getName(i), atts.getType(i), atts.getValue(i)); + } + } + + + /** + * Add an attribute to an attribute list. + * + *

This method is provided for SAX parser writers, to allow them + * to build up an attribute list incrementally before delivering + * it to the application.

+ * + * @param name The attribute name. + * @param type The attribute type ("NMTOKEN" for an enumeration). + * @param value The attribute value (must not be null). + * @see #removeAttribute + * @see org.xml.sax.DocumentHandler#startElement + */ + public void addAttribute (String name, String type, String value) + { + names.addElement(name); + types.addElement(type); + values.addElement(value); + } + + + /** + * Remove an attribute from the list. + * + *

SAX application writers can use this method to filter an + * attribute out of an AttributeList. Note that invoking this + * method will change the length of the attribute list and + * some of the attribute's indices.

+ * + *

If the requested attribute is not in the list, this is + * a no-op.

+ * + * @param name The attribute name. + * @see #addAttribute + */ + public void removeAttribute (String name) + { + int i = names.indexOf(name); + + if (i >= 0) { + names.removeElementAt(i); + types.removeElementAt(i); + values.removeElementAt(i); + } + } + + + /** + * Clear the attribute list. + * + *

SAX parser writers can use this method to reset the attribute + * list between DocumentHandler.startElement events. Normally, + * it will make sense to reuse the same AttributeListImpl object + * rather than allocating a new one each time.

+ * + * @see org.xml.sax.DocumentHandler#startElement + */ + public void clear () + { + names.removeAllElements(); + types.removeAllElements(); + values.removeAllElements(); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.AttributeList + //////////////////////////////////////////////////////////////////// + + + /** + * Return the number of attributes in the list. + * + * @return The number of attributes in the list. + * @see org.xml.sax.AttributeList#getLength + */ + public int getLength () + { + return names.size(); + } + + + /** + * Get the name of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute name as a string, or null if there + * is no attribute at that position. + * @see org.xml.sax.AttributeList#getName(int) + */ + public String getName (int i) + { + if (i < 0) { + return null; + } + try { + return (String)names.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the type of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute type as a string ("NMTOKEN" for an + * enumeration, and "CDATA" if no declaration was + * read), or null if there is no attribute at + * that position. + * @see org.xml.sax.AttributeList#getType(int) + */ + public String getType (int i) + { + if (i < 0) { + return null; + } + try { + return (String)types.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the value of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute value as a string, or null if + * there is no attribute at that position. + * @see org.xml.sax.AttributeList#getValue(int) + */ + public String getValue (int i) + { + if (i < 0) { + return null; + } + try { + return (String)values.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the type of an attribute (by name). + * + * @param name The attribute name. + * @return The attribute type as a string ("NMTOKEN" for an + * enumeration, and "CDATA" if no declaration was + * read). + * @see org.xml.sax.AttributeList#getType(java.lang.String) + */ + public String getType (String name) + { + return getType(names.indexOf(name)); + } + + + /** + * Get the value of an attribute (by name). + * + * @param name The attribute name. + * @see org.xml.sax.AttributeList#getValue(java.lang.String) + */ + public String getValue (String name) + { + return getValue(names.indexOf(name)); + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + Vector names = new Vector(); + Vector types = new Vector(); + Vector values = new Vector(); + +} + +// end of AttributeListImpl.java diff --git a/libjava/org/xml/sax/helpers/AttributesImpl.java b/libjava/org/xml/sax/helpers/AttributesImpl.java new file mode 100644 index 00000000000..b714f39fdb8 --- /dev/null +++ b/libjava/org/xml/sax/helpers/AttributesImpl.java @@ -0,0 +1,606 @@ +// AttributesImpl.java - default implementation of Attributes. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: AttributesImpl.java,v 1.2 2001/05/31 16:03:17 garyp Exp $ + + +package org.xml.sax.helpers; + +import org.xml.sax.Attributes; + + +/** + * Default implementation of the Attributes interface. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class provides a default implementation of the SAX2 + * {@link org.xml.sax.Attributes Attributes} interface, with the + * addition of manipulators so that the list can be modified or + * reused.

+ * + *

There are two typical uses of this class:

+ * + *
    + *
  1. to take a persistent snapshot of an Attributes object + * in a {@link org.xml.sax.ContentHandler#startElement startElement} event; or
    2. + *
  2. to construct or modify an Attributes object in a SAX2 driver or filter.
    3. + *
+ * + *

This class replaces the now-deprecated SAX1 {@link + * org.xml.sax.helpers.AttributeListImpl AttributeListImpl} + * class; in addition to supporting the updated Attributes + * interface rather than the deprecated {@link org.xml.sax.AttributeList + * AttributeList} interface, it also includes a much more efficient + * implementation using a single array rather than a set of Vectors.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + */ +public class AttributesImpl implements Attributes +{ + + + //////////////////////////////////////////////////////////////////// + // Constructors. + //////////////////////////////////////////////////////////////////// + + + /** + * Construct a new, empty AttributesImpl object. + */ + public AttributesImpl () + { + length = 0; + data = null; + } + + + /** + * Copy an existing Attributes object. + * + *

This constructor is especially useful inside a + * {@link org.xml.sax.ContentHandler#startElement startElement} event.

+ * + * @param atts The existing Attributes object. + */ + public AttributesImpl (Attributes atts) + { + setAttributes(atts); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.Attributes. + //////////////////////////////////////////////////////////////////// + + + /** + * Return the number of attributes in the list. + * + * @return The number of attributes in the list. + * @see org.xml.sax.Attributes#getLength + */ + public int getLength () + { + return length; + } + + + /** + * Return an attribute's Namespace URI. + * + * @param index The attribute's index (zero-based). + * @return The Namespace URI, the empty string if none is + * available, or null if the index is out of range. + * @see org.xml.sax.Attributes#getURI + */ + public String getURI (int index) + { + if (index >= 0 && index < length) { + return data[index*5]; + } else { + return null; + } + } + + + /** + * Return an attribute's local name. + * + * @param index The attribute's index (zero-based). + * @return The attribute's local name, the empty string if + * none is available, or null if the index if out of range. + * @see org.xml.sax.Attributes#getLocalName + */ + public String getLocalName (int index) + { + if (index >= 0 && index < length) { + return data[index*5+1]; + } else { + return null; + } + } + + + /** + * Return an attribute's qualified (prefixed) name. + * + * @param index The attribute's index (zero-based). + * @return The attribute's qualified name, the empty string if + * none is available, or null if the index is out of bounds. + * @see org.xml.sax.Attributes#getQName + */ + public String getQName (int index) + { + if (index >= 0 && index < length) { + return data[index*5+2]; + } else { + return null; + } + } + + + /** + * Return an attribute's type by index. + * + * @param index The attribute's index (zero-based). + * @return The attribute's type, "CDATA" if the type is unknown, or null + * if the index is out of bounds. + * @see org.xml.sax.Attributes#getType(int) + */ + public String getType (int index) + { + if (index >= 0 && index < length) { + return data[index*5+3]; + } else { + return null; + } + } + + + /** + * Return an attribute's value by index. + * + * @param index The attribute's index (zero-based). + * @return The attribute's value or null if the index is out of bounds. + * @see org.xml.sax.Attributes#getValue(int) + */ + public String getValue (int index) + { + if (index >= 0 && index < length) { + return data[index*5+4]; + } else { + return null; + } + } + + + /** + * Look up an attribute's index by Namespace name. + * + *

In many cases, it will be more efficient to look up the name once and + * use the index query methods rather than using the name query methods + * repeatedly.

+ * + * @param uri The attribute's Namespace URI, or the empty + * string if none is available. + * @param localName The attribute's local name. + * @return The attribute's index, or -1 if none matches. + * @see org.xml.sax.Attributes#getIndex(java.lang.String,java.lang.String) + */ + public int getIndex (String uri, String localName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i].equals(uri) && data[i+1].equals(localName)) { + return i / 5; + } + } + return -1; + } + + + /** + * Look up an attribute's index by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attribute's index, or -1 if none matches. + * @see org.xml.sax.Attributes#getIndex(java.lang.String) + */ + public int getIndex (String qName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i+2].equals(qName)) { + return i / 5; + } + } + return -1; + } + + + /** + * Look up an attribute's type by Namespace-qualified name. + * + * @param uri The Namespace URI, or the empty string for a name + * with no explicit Namespace URI. + * @param localName The local name. + * @return The attribute's type, or null if there is no + * matching attribute. + * @see org.xml.sax.Attributes#getType(java.lang.String,java.lang.String) + */ + public String getType (String uri, String localName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i].equals(uri) && data[i+1].equals(localName)) { + return data[i+3]; + } + } + return null; + } + + + /** + * Look up an attribute's type by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attribute's type, or null if there is no + * matching attribute. + * @see org.xml.sax.Attributes#getType(java.lang.String) + */ + public String getType (String qName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i+2].equals(qName)) { + return data[i+3]; + } + } + return null; + } + + + /** + * Look up an attribute's value by Namespace-qualified name. + * + * @param uri The Namespace URI, or the empty string for a name + * with no explicit Namespace URI. + * @param localName The local name. + * @return The attribute's value, or null if there is no + * matching attribute. + * @see org.xml.sax.Attributes#getValue(java.lang.String,java.lang.String) + */ + public String getValue (String uri, String localName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i].equals(uri) && data[i+1].equals(localName)) { + return data[i+4]; + } + } + return null; + } + + + /** + * Look up an attribute's value by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attribute's value, or null if there is no + * matching attribute. + * @see org.xml.sax.Attributes#getValue(java.lang.String) + */ + public String getValue (String qName) + { + int max = length * 5; + for (int i = 0; i < max; i += 5) { + if (data[i+2].equals(qName)) { + return data[i+4]; + } + } + return null; + } + + + + //////////////////////////////////////////////////////////////////// + // Manipulators. + //////////////////////////////////////////////////////////////////// + + + /** + * Clear the attribute list for reuse. + * + *

Note that no memory is actually freed by this call: + * the current arrays are kept so that they can be + * reused.

+ */ + public void clear () + { + length = 0; + } + + + /** + * Copy an entire Attributes object. + * + *

It may be more efficient to reuse an existing object + * rather than constantly allocating new ones.

+ * + * @param atts The attributes to copy. + */ + public void setAttributes (Attributes atts) + { + clear(); + length = atts.getLength(); + data = new String[length*5]; + for (int i = 0; i < length; i++) { + data[i*5] = atts.getURI(i); + data[i*5+1] = atts.getLocalName(i); + data[i*5+2] = atts.getQName(i); + data[i*5+3] = atts.getType(i); + data[i*5+4] = atts.getValue(i); + } + } + + + /** + * Add an attribute to the end of the list. + * + *

For the sake of speed, this method does no checking + * to see if the attribute is already in the list: that is + * the responsibility of the application.

+ * + * @param uri The Namespace URI, or the empty string if + * none is available or Namespace processing is not + * being performed. + * @param localName The local name, or the empty string if + * Namespace processing is not being performed. + * @param qName The qualified (prefixed) name, or the empty string + * if qualified names are not available. + * @param type The attribute type as a string. + * @param value The attribute value. + */ + public void addAttribute (String uri, String localName, String qName, + String type, String value) + { + ensureCapacity(length+1); + data[length*5] = uri; + data[length*5+1] = localName; + data[length*5+2] = qName; + data[length*5+3] = type; + data[length*5+4] = value; + length++; + } + + + /** + * Set an attribute in the list. + * + *

For the sake of speed, this method does no checking + * for name conflicts or well-formedness: such checks are the + * responsibility of the application.

+ * + * @param index The index of the attribute (zero-based). + * @param uri The Namespace URI, or the empty string if + * none is available or Namespace processing is not + * being performed. + * @param localName The local name, or the empty string if + * Namespace processing is not being performed. + * @param qName The qualified name, or the empty string + * if qualified names are not available. + * @param type The attribute type as a string. + * @param value The attribute value. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setAttribute (int index, String uri, String localName, + String qName, String type, String value) + { + if (index >= 0 && index < length) { + data[index*5] = uri; + data[index*5+1] = localName; + data[index*5+2] = qName; + data[index*5+3] = type; + data[index*5+4] = value; + } else { + badIndex(index); + } + } + + + /** + * Remove an attribute from the list. + * + * @param index The index of the attribute (zero-based). + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void removeAttribute (int index) + { + if (index >= 0 && index < length) { + data[index*5] = null; + data[index*5+1] = null; + data[index*5+2] = null; + data[index*5+3] = null; + data[index*5+4] = null; + if (index < length - 1) { + System.arraycopy(data, (index+1)*5, data, index*5, + (length-index-1)*5); + } + length--; + } else { + badIndex(index); + } + } + + + /** + * Set the Namespace URI of a specific attribute. + * + * @param index The index of the attribute (zero-based). + * @param uri The attribute's Namespace URI, or the empty + * string for none. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setURI (int index, String uri) + { + if (index >= 0 && index < length) { + data[index*5] = uri; + } else { + badIndex(index); + } + } + + + /** + * Set the local name of a specific attribute. + * + * @param index The index of the attribute (zero-based). + * @param localName The attribute's local name, or the empty + * string for none. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setLocalName (int index, String localName) + { + if (index >= 0 && index < length) { + data[index*5+1] = localName; + } else { + badIndex(index); + } + } + + + /** + * Set the qualified name of a specific attribute. + * + * @param index The index of the attribute (zero-based). + * @param qName The attribute's qualified name, or the empty + * string for none. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setQName (int index, String qName) + { + if (index >= 0 && index < length) { + data[index*5+2] = qName; + } else { + badIndex(index); + } + } + + + /** + * Set the type of a specific attribute. + * + * @param index The index of the attribute (zero-based). + * @param type The attribute's type. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setType (int index, String type) + { + if (index >= 0 && index < length) { + data[index*5+3] = type; + } else { + badIndex(index); + } + } + + + /** + * Set the value of a specific attribute. + * + * @param index The index of the attribute (zero-based). + * @param value The attribute's value. + * @exception java.lang.ArrayIndexOutOfBoundsException When the + * supplied index does not point to an attribute + * in the list. + */ + public void setValue (int index, String value) + { + if (index >= 0 && index < length) { + data[index*5+4] = value; + } else { + badIndex(index); + } + } + + + + //////////////////////////////////////////////////////////////////// + // Internal methods. + //////////////////////////////////////////////////////////////////// + + + /** + * Ensure the internal array's capacity. + * + * @param n The minimum number of attributes that the array must + * be able to hold. + */ + private void ensureCapacity (int n) + { + if (n > 0 && data == null) { + data = new String[25]; + } + + int max = data.length; + if (max >= n * 5) { + return; + } + + + while (max < n * 5) { + max *= 2; + } + String newData[] = new String[max]; + System.arraycopy(data, 0, newData, 0, length*5); + data = newData; + } + + + /** + * Report a bad array index in a manipulator. + * + * @param index The index to report. + * @exception java.lang.ArrayIndexOutOfBoundsException Always. + */ + private void badIndex (int index) + throws ArrayIndexOutOfBoundsException + { + String msg = + "Attempt to modify attribute at illegal index: " + index; + throw new ArrayIndexOutOfBoundsException(msg); + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + int length; + String data []; + +} + +// end of AttributesImpl.java + diff --git a/libjava/org/xml/sax/helpers/DefaultHandler.java b/libjava/org/xml/sax/helpers/DefaultHandler.java new file mode 100644 index 00000000000..dfda9c39a94 --- /dev/null +++ b/libjava/org/xml/sax/helpers/DefaultHandler.java @@ -0,0 +1,447 @@ +// DefaultHandler.java - default implementation of the core handlers. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: DefaultHandler.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import org.xml.sax.InputSource; +import org.xml.sax.Locator; +import org.xml.sax.Attributes; +import org.xml.sax.EntityResolver; +import org.xml.sax.DTDHandler; +import org.xml.sax.ContentHandler; +import org.xml.sax.ErrorHandler; +import org.xml.sax.SAXException; +import org.xml.sax.SAXParseException; + + +/** + * Default base class for SAX2 event handlers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class is available as a convenience base class for SAX2 + * applications: it provides default implementations for all of the + * callbacks in the four core SAX2 handler classes:

+ * + * + * + *

Application writers can extend this class when they need to + * implement only part of an interface; parser writers can + * instantiate this class to provide default handlers when the + * application has not supplied its own.

+ * + *

This class replaces the deprecated SAX1 + * {@link org.xml.sax.HandlerBase HandlerBase} class.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.EntityResolver + * @see org.xml.sax.DTDHandler + * @see org.xml.sax.ContentHandler + * @see org.xml.sax.ErrorHandler + */ +public class DefaultHandler + implements EntityResolver, DTDHandler, ContentHandler, ErrorHandler +{ + + + //////////////////////////////////////////////////////////////////// + // Default implementation of the EntityResolver interface. + //////////////////////////////////////////////////////////////////// + + /** + * Resolve an external entity. + * + *

Always return null, so that the parser will use the system + * identifier provided in the XML document. This method implements + * the SAX default behaviour: application writers can override it + * in a subclass to do special translations such as catalog lookups + * or URI redirection.

+ * + * @param publicId The public identifer, or null if none is + * available. + * @param systemId The system identifier provided in the XML + * document. + * @return The new input source, or null to require the + * default behaviour. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.EntityResolver#resolveEntity + */ + public InputSource resolveEntity (String publicId, String systemId) + throws SAXException + { + return null; + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of DTDHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive notification of a notation declaration. + * + *

By default, do nothing. Application writers may override this + * method in a subclass if they wish to keep track of the notations + * declared in a document.

+ * + * @param name The notation name. + * @param publicId The notation public identifier, or null if not + * available. + * @param systemId The notation system identifier. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DTDHandler#notationDecl + */ + public void notationDecl (String name, String publicId, String systemId) + throws SAXException + { + // no op + } + + + /** + * Receive notification of an unparsed entity declaration. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to keep track of the unparsed entities + * declared in a document.

+ * + * @param name The entity name. + * @param publicId The entity public identifier, or null if not + * available. + * @param systemId The entity system identifier. + * @param notationName The name of the associated notation. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.DTDHandler#unparsedEntityDecl + */ + public void unparsedEntityDecl (String name, String publicId, + String systemId, String notationName) + throws SAXException + { + // no op + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of ContentHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive a Locator object for document events. + * + *

By default, do nothing. Application writers may override this + * method in a subclass if they wish to store the locator for use + * with other document events.

+ * + * @param locator A locator for all SAX document events. + * @see org.xml.sax.ContentHandler#setDocumentLocator + * @see org.xml.sax.Locator + */ + public void setDocumentLocator (Locator locator) + { + // no op + } + + + /** + * Receive notification of the beginning of the document. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the beginning + * of a document (such as allocating the root node of a tree or + * creating an output file).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#startDocument + */ + public void startDocument () + throws SAXException + { + // no op + } + + + /** + * Receive notification of the end of the document. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the end + * of a document (such as finalising a tree or closing an output + * file).

+ * + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#endDocument + */ + public void endDocument () + throws SAXException + { + // no op + } + + + /** + * Receive notification of the start of a Namespace mapping. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the start of + * each Namespace prefix scope (such as storing the prefix mapping).

+ * + * @param prefix The Namespace prefix being declared. + * @param uri The Namespace URI mapped to the prefix. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#startPrefixMapping + */ + public void startPrefixMapping (String prefix, String uri) + throws SAXException + { + // no op + } + + + /** + * Receive notification of the end of a Namespace mapping. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the end of + * each prefix mapping.

+ * + * @param prefix The Namespace prefix being declared. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#endPrefixMapping + */ + public void endPrefixMapping (String prefix) + throws SAXException + { + // no op + } + + + /** + * Receive notification of the start of an element. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the start of + * each element (such as allocating a new tree node or writing + * output to a file).

+ * + * @param name The element type name. + * @param attributes The specified or defaulted attributes. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#startElement + */ + public void startElement (String uri, String localName, + String qName, Attributes attributes) + throws SAXException + { + // no op + } + + + /** + * Receive notification of the end of an element. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions at the end of + * each element (such as finalising a tree node or writing + * output to a file).

+ * + * @param name The element type name. + * @param attributes The specified or defaulted attributes. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#endElement + */ + public void endElement (String uri, String localName, String qName) + throws SAXException + { + // no op + } + + + /** + * Receive notification of character data inside an element. + * + *

By default, do nothing. Application writers may override this + * method to take specific actions for each chunk of character data + * (such as adding the data to a node or buffer, or printing it to + * a file).

+ * + * @param ch The characters. + * @param start The start position in the character array. + * @param length The number of characters to use from the + * character array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#characters + */ + public void characters (char ch[], int start, int length) + throws SAXException + { + // no op + } + + + /** + * Receive notification of ignorable whitespace in element content. + * + *

By default, do nothing. Application writers may override this + * method to take specific actions for each chunk of ignorable + * whitespace (such as adding data to a node or buffer, or printing + * it to a file).

+ * + * @param ch The whitespace characters. + * @param start The start position in the character array. + * @param length The number of characters to use from the + * character array. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#ignorableWhitespace + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException + { + // no op + } + + + /** + * Receive notification of a processing instruction. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions for each + * processing instruction, such as setting status variables or + * invoking other methods.

+ * + * @param target The processing instruction target. + * @param data The processing instruction data, or null if + * none is supplied. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#processingInstruction + */ + public void processingInstruction (String target, String data) + throws SAXException + { + // no op + } + + + /** + * Receive notification of a skipped entity. + * + *

By default, do nothing. Application writers may override this + * method in a subclass to take specific actions for each + * processing instruction, such as setting status variables or + * invoking other methods.

+ * + * @param name The name of the skipped entity. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ContentHandler#processingInstruction + */ + public void skippedEntity (String name) + throws SAXException + { + // no op + } + + + + //////////////////////////////////////////////////////////////////// + // Default implementation of the ErrorHandler interface. + //////////////////////////////////////////////////////////////////// + + + /** + * Receive notification of a parser warning. + * + *

The default implementation does nothing. Application writers + * may override this method in a subclass to take specific actions + * for each warning, such as inserting the message in a log file or + * printing it to the console.

+ * + * @param e The warning information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#warning + * @see org.xml.sax.SAXParseException + */ + public void warning (SAXParseException e) + throws SAXException + { + // no op + } + + + /** + * Receive notification of a recoverable parser error. + * + *

The default implementation does nothing. Application writers + * may override this method in a subclass to take specific actions + * for each error, such as inserting the message in a log file or + * printing it to the console.

+ * + * @param e The warning information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#warning + * @see org.xml.sax.SAXParseException + */ + public void error (SAXParseException e) + throws SAXException + { + // no op + } + + + /** + * Report a fatal XML parsing error. + * + *

The default implementation throws a SAXParseException. + * Application writers may override this method in a subclass if + * they need to take specific actions for each fatal error (such as + * collecting all of the errors into a single report): in any case, + * the application must stop all regular processing when this + * method is invoked, since the document is no longer reliable, and + * the parser may no longer report parsing events.

+ * + * @param e The error information encoded as an exception. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @see org.xml.sax.ErrorHandler#fatalError + * @see org.xml.sax.SAXParseException + */ + public void fatalError (SAXParseException e) + throws SAXException + { + throw e; + } + +} + +// end of DefaultHandler.java diff --git a/libjava/org/xml/sax/helpers/LocatorImpl.java b/libjava/org/xml/sax/helpers/LocatorImpl.java new file mode 100644 index 00000000000..634044ccff2 --- /dev/null +++ b/libjava/org/xml/sax/helpers/LocatorImpl.java @@ -0,0 +1,212 @@ +// SAX default implementation for Locator. +// No warranty; no copyright -- use this as you will. +// $Id: LocatorImpl.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import org.xml.sax.Locator; + + +/** + * Provide an optional convenience implementation of Locator. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class is available mainly for application writers, who + * can use it to make a persistent snapshot of a locator at any + * point during a document parse:

+ * + * 
+ * Locator locator;
+ * Locator startloc;
+ *
+ * public void setLocator (Locator locator)
+ * {
+ *         // note the locator
+ *   this.locator = locator;
+ * }
+ *
+ * public void startDocument ()
+ * {
+ *         // save the location of the start of the document
+ *         // for future use.
+ *   Locator startloc = new LocatorImpl(locator);
+ * }
+ *
+ * + *

Normally, parser writers will not use this class, since it + * is more efficient to provide location information only when + * requested, rather than constantly updating a Locator object.

+ * + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Locator Locator + */ +public class LocatorImpl implements Locator +{ + + + /** + * Zero-argument constructor. + * + *

This will not normally be useful, since the main purpose + * of this class is to make a snapshot of an existing Locator.

+ */ + public LocatorImpl () + { + } + + + /** + * Copy constructor. + * + *

Create a persistent copy of the current state of a locator. + * When the original locator changes, this copy will still keep + * the original values (and it can be used outside the scope of + * DocumentHandler methods).

+ * + * @param locator The locator to copy. + */ + public LocatorImpl (Locator locator) + { + setPublicId(locator.getPublicId()); + setSystemId(locator.getSystemId()); + setLineNumber(locator.getLineNumber()); + setColumnNumber(locator.getColumnNumber()); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.Locator + //////////////////////////////////////////////////////////////////// + + + /** + * Return the saved public identifier. + * + * @return The public identifier as a string, or null if none + * is available. + * @see org.xml.sax.Locator#getPublicId + * @see #setPublicId + */ + public String getPublicId () + { + return publicId; + } + + + /** + * Return the saved system identifier. + * + * @return The system identifier as a string, or null if none + * is available. + * @see org.xml.sax.Locator#getSystemId + * @see #setSystemId + */ + public String getSystemId () + { + return systemId; + } + + + /** + * Return the saved line number (1-based). + * + * @return The line number as an integer, or -1 if none is available. + * @see org.xml.sax.Locator#getLineNumber + * @see #setLineNumber + */ + public int getLineNumber () + { + return lineNumber; + } + + + /** + * Return the saved column number (1-based). + * + * @return The column number as an integer, or -1 if none is available. + * @see org.xml.sax.Locator#getColumnNumber + * @see #setColumnNumber + */ + public int getColumnNumber () + { + return columnNumber; + } + + + + //////////////////////////////////////////////////////////////////// + // Setters for the properties (not in org.xml.sax.Locator) + //////////////////////////////////////////////////////////////////// + + + /** + * Set the public identifier for this locator. + * + * @param publicId The new public identifier, or null + * if none is available. + * @see #getPublicId + */ + public void setPublicId (String publicId) + { + this.publicId = publicId; + } + + + /** + * Set the system identifier for this locator. + * + * @param systemId The new system identifier, or null + * if none is available. + * @see #getSystemId + */ + public void setSystemId (String systemId) + { + this.systemId = systemId; + } + + + /** + * Set the line number for this locator (1-based). + * + * @param lineNumber The line number, or -1 if none is available. + * @see #getLineNumber + */ + public void setLineNumber (int lineNumber) + { + this.lineNumber = lineNumber; + } + + + /** + * Set the column number for this locator (1-based). + * + * @param columnNumber The column number, or -1 if none is available. + * @see #getColumnNumber + */ + public void setColumnNumber (int columnNumber) + { + this.columnNumber = columnNumber; + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + private String publicId; + private String systemId; + private int lineNumber; + private int columnNumber; + +} + +// end of LocatorImpl.java diff --git a/libjava/org/xml/sax/helpers/NamespaceSupport.java b/libjava/org/xml/sax/helpers/NamespaceSupport.java new file mode 100644 index 00000000000..a4588c3d2c7 --- /dev/null +++ b/libjava/org/xml/sax/helpers/NamespaceSupport.java @@ -0,0 +1,689 @@ +// NamespaceSupport.java - generic Namespace support for SAX. +// Written by David Megginson, sax@megginson.com +// This class is in the Public Domain. NO WARRANTY! + +// $Id: NamespaceSupport.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import java.util.EmptyStackException; +import java.util.Enumeration; +import java.util.Hashtable; +import java.util.Vector; + + +/** + * Encapsulate Namespace logic for use by SAX drivers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class encapsulates the logic of Namespace processing: + * it tracks the declarations currently in force for each context + * and automatically processes qualified XML 1.0 names into their + * Namespace parts; it can also be used in reverse for generating + * XML 1.0 from Namespaces.

+ * + *

Namespace support objects are reusable, but the reset method + * must be invoked between each session.

+ * + *

Here is a simple session:

+ * + * 
+ * String parts[] = new String[3];
+ * NamespaceSupport support = new NamespaceSupport();
+ *
+ * support.pushContext();
+ * support.declarePrefix("", "http://www.w3.org/1999/xhtml");
+ * support.declarePrefix("dc", "http://www.purl.org/dc#");
+ *
+ * String parts[] = support.processName("p", parts, false);
+ * System.out.println("Namespace URI: " + parts[0]);
+ * System.out.println("Local name: " + parts[1]);
+ * System.out.println("Raw name: " + parts[2]);
+
+ * String parts[] = support.processName("dc:title", parts, false);
+ * System.out.println("Namespace URI: " + parts[0]);
+ * System.out.println("Local name: " + parts[1]);
+ * System.out.println("Raw name: " + parts[2]);
+
+ * support.popContext();
+ *
+ * + *

Note that this class is optimized for the use case where most + * elements do not contain Namespace declarations: if the same + * prefix/URI mapping is repeated for each context (for example), this + * class will be somewhat less efficient.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + */ +public class NamespaceSupport +{ + + + //////////////////////////////////////////////////////////////////// + // Constants. + //////////////////////////////////////////////////////////////////// + + + /** + * The XML Namespace as a constant. + * + *

This is the Namespace URI that is automatically mapped + * to the "xml" prefix.

+ */ + public final static String XMLNS = + "http://www.w3.org/XML/1998/namespace"; + + + /** + * An empty enumeration. + */ + private final static Enumeration EMPTY_ENUMERATION = + new Vector().elements(); + + + //////////////////////////////////////////////////////////////////// + // Constructor. + //////////////////////////////////////////////////////////////////// + + + /** + * Create a new Namespace support object. + */ + public NamespaceSupport () + { + reset(); + } + + + + //////////////////////////////////////////////////////////////////// + // Context management. + //////////////////////////////////////////////////////////////////// + + + /** + * Reset this Namespace support object for reuse. + * + *

It is necessary to invoke this method before reusing the + * Namespace support object for a new session.

+ */ + public void reset () + { + contexts = new Context[32]; + contextPos = 0; + contexts[contextPos] = currentContext = new Context(); + currentContext.declarePrefix("xml", XMLNS); + } + + + /** + * Start a new Namespace context. + * + *

Normally, you should push a new context at the beginning + * of each XML element: the new context will automatically inherit + * the declarations of its parent context, but it will also keep + * track of which declarations were made within this context.

+ * + *

The Namespace support object always starts with a base context + * already in force: in this context, only the "xml" prefix is + * declared.

+ * + * @see #popContext + */ + public void pushContext () + { + int max = contexts.length; + contextPos++; + + // Extend the array if necessary + if (contextPos >= max) { + Context newContexts[] = new Context[max*2]; + System.arraycopy(contexts, 0, newContexts, 0, max); + max *= 2; + contexts = newContexts; + } + + // Allocate the context if necessary. + currentContext = contexts[contextPos]; + if (currentContext == null) { + contexts[contextPos] = currentContext = new Context(); + } + + // Set the parent, if any. + if (contextPos > 0) { + currentContext.setParent(contexts[contextPos - 1]); + } + } + + + /** + * Revert to the previous Namespace context. + * + *

Normally, you should pop the context at the end of each + * XML element. After popping the context, all Namespace prefix + * mappings that were previously in force are restored.

+ * + *

You must not attempt to declare additional Namespace + * prefixes after popping a context, unless you push another + * context first.

+ * + * @see #pushContext + */ + public void popContext () + { + contextPos--; + if (contextPos < 0) { + throw new EmptyStackException(); + } + currentContext = contexts[contextPos]; + } + + + + //////////////////////////////////////////////////////////////////// + // Operations within a context. + //////////////////////////////////////////////////////////////////// + + + /** + * Declare a Namespace prefix. + * + *

This method declares a prefix in the current Namespace + * context; the prefix will remain in force until this context + * is popped, unless it is shadowed in a descendant context.

+ * + *

To declare a default Namespace, use the empty string. The + * prefix must not be "xml" or "xmlns".

+ * + *

Note that you must not declare a prefix after + * you've pushed and popped another Namespace.

+ * + *

Note that there is an asymmetry in this library: while {@link + * #getPrefix getPrefix} will not return the default "" prefix, + * even if you have declared one; to check for a default prefix, + * you have to look it up explicitly using {@link #getURI getURI}. + * This asymmetry exists to make it easier to look up prefixes + * for attribute names, where the default prefix is not allowed.

+ * + * @param prefix The prefix to declare, or null for the empty + * string. + * @param uri The Namespace URI to associate with the prefix. + * @return true if the prefix was legal, false otherwise + * @see #processName + * @see #getURI + * @see #getPrefix + */ + public boolean declarePrefix (String prefix, String uri) + { + if (prefix.equals("xml") || prefix.equals("xmlns")) { + return false; + } else { + currentContext.declarePrefix(prefix, uri); + return true; + } + } + + + /** + * Process a raw XML 1.0 name. + * + *

This method processes a raw XML 1.0 name in the current + * context by removing the prefix and looking it up among the + * prefixes currently declared. The return value will be the + * array supplied by the caller, filled in as follows:

+ * + *
+ *
parts[0]
+ *
The Namespace URI, or an empty string if none is + * in use.
+ *
parts[1]
+ *
The local name (without prefix).
+ *
parts[2]
+ *
The original raw name.
+ *
+ * + *

All of the strings in the array will be internalized. If + * the raw name has a prefix that has not been declared, then + * the return value will be null.

+ * + *

Note that attribute names are processed differently than + * element names: an unprefixed element name will received the + * default Namespace (if any), while an unprefixed element name + * will not.

+ * + * @param qName The raw XML 1.0 name to be processed. + * @param parts An array supplied by the caller, capable of + * holding at least three members. + * @param isAttribute A flag indicating whether this is an + * attribute name (true) or an element name (false). + * @return The supplied array holding three internalized strings + * representing the Namespace URI (or empty string), the + * local name, and the raw XML 1.0 name; or null if there + * is an undeclared prefix. + * @see #declarePrefix + * @see java.lang.String#intern */ + public String [] processName (String qName, String parts[], + boolean isAttribute) + { + String myParts[] = currentContext.processName(qName, isAttribute); + if (myParts == null) { + return null; + } else { + parts[0] = myParts[0]; + parts[1] = myParts[1]; + parts[2] = myParts[2]; + return parts; + } + } + + + /** + * Look up a prefix and get the currently-mapped Namespace URI. + * + *

This method looks up the prefix in the current context. + * Use the empty string ("") for the default Namespace.

+ * + * @param prefix The prefix to look up. + * @return The associated Namespace URI, or null if the prefix + * is undeclared in this context. + * @see #getPrefix + * @see #getPrefixes + */ + public String getURI (String prefix) + { + return currentContext.getURI(prefix); + } + + + /** + * Return an enumeration of all prefixes currently declared. + * + *

Note: if there is a default prefix, it will not be + * returned in this enumeration; check for the default prefix + * using the {@link #getURI getURI} with an argument of "".

+ * + * @return An enumeration of all prefixes declared in the + * current context except for the empty (default) + * prefix. + * @see #getDeclaredPrefixes + * @see #getURI + */ + public Enumeration getPrefixes () + { + return currentContext.getPrefixes(); + } + + + /** + * Return one of the prefixes mapped to a Namespace URI. + * + *

If more than one prefix is currently mapped to the same + * URI, this method will make an arbitrary selection; if you + * want all of the prefixes, use the {@link #getPrefixes} + * method instead.

+ * + *

Note: this will never return the empty (default) prefix; + * to check for a default prefix, use the {@link #getURI getURI} + * method with an argument of "".

+ * + * @param uri The Namespace URI. + * @param isAttribute true if this prefix is for an attribute + * (and the default Namespace is not allowed). + * @return One of the prefixes currently mapped to the URI supplied, + * or null if none is mapped or if the URI is assigned to + * the default Namespace. + * @see #getPrefixes(java.lang.String) + * @see #getURI + */ + public String getPrefix (String uri) + { + return currentContext.getPrefix(uri); + } + + + /** + * Return an enumeration of all prefixes currently declared for a URI. + * + *

This method returns prefixes mapped to a specific Namespace + * URI. The xml: prefix will be included. If you want only one + * prefix that's mapped to the Namespace URI, and you don't care + * which one you get, use the {@link #getPrefix getPrefix} + * method instead.

+ * + *

Note: the empty (default) prefix is never included + * in this enumeration; to check for the presence of a default + * Namespace, use the {@link #getURI getURI} method with an + * argument of "".

+ * + * @param uri The Namespace URI. + * @return An enumeration of all prefixes declared in the + * current context. + * @see #getPrefix + * @see #getDeclaredPrefixes + * @see #getURI + */ + public Enumeration getPrefixes (String uri) + { + Vector prefixes = new Vector(); + Enumeration allPrefixes = getPrefixes(); + while (allPrefixes.hasMoreElements()) { + String prefix = (String)allPrefixes.nextElement(); + if (uri.equals(getURI(prefix))) { + prefixes.addElement(prefix); + } + } + return prefixes.elements(); + } + + + /** + * Return an enumeration of all prefixes declared in this context. + * + *

The empty (default) prefix will be included in this + * enumeration; note that this behaviour differs from that of + * {@link #getPrefix} and {@link #getPrefixes}.

+ * + * @return An enumeration of all prefixes declared in this + * context. + * @see #getPrefixes + * @see #getURI + */ + public Enumeration getDeclaredPrefixes () + { + return currentContext.getDeclaredPrefixes(); + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + private Context contexts[]; + private Context currentContext; + private int contextPos; + + + + //////////////////////////////////////////////////////////////////// + // Internal classes. + //////////////////////////////////////////////////////////////////// + + /** + * Internal class for a single Namespace context. + * + *

This module caches and reuses Namespace contexts, so the number allocated + * will be equal to the element depth of the document, not to the total + * number of elements (i.e. 5-10 rather than tens of thousands).

+ */ + final class Context { + + /** + * Create the root-level Namespace context. + */ + Context () + { + copyTables(); + } + + + /** + * (Re)set the parent of this Namespace context. + * + * @param context The parent Namespace context object. + */ + void setParent (Context parent) + { + this.parent = parent; + declarations = null; + prefixTable = parent.prefixTable; + uriTable = parent.uriTable; + elementNameTable = parent.elementNameTable; + attributeNameTable = parent.attributeNameTable; + defaultNS = parent.defaultNS; + tablesDirty = false; + } + + + /** + * Declare a Namespace prefix for this context. + * + * @param prefix The prefix to declare. + * @param uri The associated Namespace URI. + * @see org.xml.sax.helpers.NamespaceSupport#declarePrefix + */ + void declarePrefix (String prefix, String uri) + { + // Lazy processing... + if (!tablesDirty) { + copyTables(); + } + if (declarations == null) { + declarations = new Vector(); + } + + prefix = prefix.intern(); + uri = uri.intern(); + if ("".equals(prefix)) { + if ("".equals(uri)) { + defaultNS = null; + } else { + defaultNS = uri; + } + } else { + prefixTable.put(prefix, uri); + uriTable.put(uri, prefix); // may wipe out another prefix + } + declarations.addElement(prefix); + } + + + /** + * Process a raw XML 1.0 name in this context. + * + * @param qName The raw XML 1.0 name. + * @param isAttribute true if this is an attribute name. + * @return An array of three strings containing the + * URI part (or empty string), the local part, + * and the raw name, all internalized, or null + * if there is an undeclared prefix. + * @see org.xml.sax.helpers.NamespaceSupport#processName + */ + String [] processName (String qName, boolean isAttribute) + { + String name[]; + Hashtable table; + + // Select the appropriate table. + if (isAttribute) { + table = elementNameTable; + } else { + table = attributeNameTable; + } + + // Start by looking in the cache, and + // return immediately if the name + // is already known in this content + name = (String[])table.get(qName); + if (name != null) { + return name; + } + + // We haven't seen this name in this + // context before. + name = new String[3]; + int index = qName.indexOf(':'); + + + // No prefix. + if (index == -1) { + if (isAttribute || defaultNS == null) { + name[0] = ""; + } else { + name[0] = defaultNS; + } + name[1] = qName.intern(); + name[2] = name[1]; + } + + // Prefix + else { + String prefix = qName.substring(0, index); + String local = qName.substring(index+1); + String uri; + if ("".equals(prefix)) { + uri = defaultNS; + } else { + uri = (String)prefixTable.get(prefix); + } + if (uri == null) { + return null; + } + name[0] = uri; + name[1] = local.intern(); + name[2] = qName.intern(); + } + + // Save in the cache for future use. + table.put(name[2], name); + tablesDirty = true; + return name; + } + + + /** + * Look up the URI associated with a prefix in this context. + * + * @param prefix The prefix to look up. + * @return The associated Namespace URI, or null if none is + * declared. + * @see org.xml.sax.helpers.NamespaceSupport#getURI + */ + String getURI (String prefix) + { + if ("".equals(prefix)) { + return defaultNS; + } else if (prefixTable == null) { + return null; + } else { + return (String)prefixTable.get(prefix); + } + } + + + /** + * Look up one of the prefixes associated with a URI in this context. + * + *

Since many prefixes may be mapped to the same URI, + * the return value may be unreliable.

+ * + * @param uri The URI to look up. + * @return The associated prefix, or null if none is declared. + * @see org.xml.sax.helpers.NamespaceSupport#getPrefix + */ + String getPrefix (String uri) + { + if (uriTable == null) { + return null; + } else { + return (String)uriTable.get(uri); + } + } + + + /** + * Return an enumeration of prefixes declared in this context. + * + * @return An enumeration of prefixes (possibly empty). + * @see org.xml.sax.helpers.NamespaceSupport#getDeclaredPrefixes + */ + Enumeration getDeclaredPrefixes () + { + if (declarations == null) { + return EMPTY_ENUMERATION; + } else { + return declarations.elements(); + } + } + + + /** + * Return an enumeration of all prefixes currently in force. + * + *

The default prefix, if in force, is not + * returned, and will have to be checked for separately.

+ * + * @return An enumeration of prefixes (never empty). + * @see org.xml.sax.helpers.NamespaceSupport#getPrefixes + */ + Enumeration getPrefixes () + { + if (prefixTable == null) { + return EMPTY_ENUMERATION; + } else { + return prefixTable.keys(); + } + } + + + + //////////////////////////////////////////////////////////////// + // Internal methods. + //////////////////////////////////////////////////////////////// + + + /** + * Copy on write for the internal tables in this context. + * + *

This class is optimized for the normal case where most + * elements do not contain Namespace declarations.

+ */ + private void copyTables () + { + if (prefixTable != null) { + prefixTable = (Hashtable)prefixTable.clone(); + } else { + prefixTable = new Hashtable(); + } + if (uriTable != null) { + uriTable = (Hashtable)uriTable.clone(); + } else { + uriTable = new Hashtable(); + } + elementNameTable = new Hashtable(); + attributeNameTable = new Hashtable(); + tablesDirty = true; + } + + + + //////////////////////////////////////////////////////////////// + // Protected state. + //////////////////////////////////////////////////////////////// + + Hashtable prefixTable; + Hashtable uriTable; + Hashtable elementNameTable; + Hashtable attributeNameTable; + String defaultNS = null; + + + + //////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////// + + private Vector declarations = null; + private boolean tablesDirty = false; + private Context parent = null; + } +} + +// end of NamespaceSupport.java diff --git a/libjava/org/xml/sax/helpers/ParserAdapter.java b/libjava/org/xml/sax/helpers/ParserAdapter.java new file mode 100644 index 00000000000..06071b7bdd5 --- /dev/null +++ b/libjava/org/xml/sax/helpers/ParserAdapter.java @@ -0,0 +1,1008 @@ +// ParserAdapter.java - adapt a SAX1 Parser to a SAX2 XMLReader. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: ParserAdapter.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import java.io.IOException; +import java.util.Enumeration; + +import org.xml.sax.Parser; // deprecated +import org.xml.sax.InputSource; +import org.xml.sax.Locator; +import org.xml.sax.AttributeList; // deprecated +import org.xml.sax.EntityResolver; +import org.xml.sax.DTDHandler; +import org.xml.sax.DocumentHandler; // deprecated +import org.xml.sax.ErrorHandler; +import org.xml.sax.SAXException; +import org.xml.sax.SAXParseException; + +import org.xml.sax.XMLReader; +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.SAXNotRecognizedException; +import org.xml.sax.SAXNotSupportedException; + + +/** + * Adapt a SAX1 Parser as a SAX2 XMLReader. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class wraps a SAX1 {@link org.xml.sax.Parser Parser} + * and makes it act as a SAX2 {@link org.xml.sax.XMLReader XMLReader}, + * with feature, property, and Namespace support. Note + * that it is not possible to report {@link org.xml.sax.ContentHandler#skippedEntity + * skippedEntity} events, since SAX1 does not make that information available.

+ * + *

This adapter does not test for duplicate Namespace-qualified + * attribute names.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.helpers.XMLReaderAdapter + * @see org.xml.sax.XMLReader + * @see org.xml.sax.Parser + */ +public class ParserAdapter implements XMLReader, DocumentHandler +{ + + + //////////////////////////////////////////////////////////////////// + // Constructors. + //////////////////////////////////////////////////////////////////// + + + /** + * Construct a new parser adapter. + * + *

Use the "org.xml.sax.parser" property to locate the + * embedded SAX1 driver.

+ * + * @exception org.xml.sax.SAXException If the embedded driver + * cannot be instantiated or if the + * org.xml.sax.parser property is not specified. + */ + public ParserAdapter () + throws SAXException + { + super(); + + String driver = System.getProperty("org.xml.sax.parser"); + + try { + setup(ParserFactory.makeParser()); + } catch (ClassNotFoundException e1) { + throw new + SAXException("Cannot find SAX1 driver class " + + driver, e1); + } catch (IllegalAccessException e2) { + throw new + SAXException("SAX1 driver class " + + driver + + " found but cannot be loaded", e2); + } catch (InstantiationException e3) { + throw new + SAXException("SAX1 driver class " + + driver + + " loaded but cannot be instantiated", e3); + } catch (ClassCastException e4) { + throw new + SAXException("SAX1 driver class " + + driver + + " does not implement org.xml.sax.Parser"); + } catch (NullPointerException e5) { + throw new + SAXException("System property org.xml.sax.parser not specified"); + } + } + + + /** + * Construct a new parser adapter. + * + *

Note that the embedded parser cannot be changed once the + * adapter is created; to embed a different parser, allocate + * a new ParserAdapter.

+ * + * @param parser The SAX1 parser to embed. + * @exception java.lang.NullPointerException If the parser parameter + * is null. + */ + public ParserAdapter (Parser parser) + { + super(); + setup(parser); + } + + + /** + * Internal setup method. + * + * @param parser The embedded parser. + * @exception java.lang.NullPointerException If the parser parameter + * is null. + */ + private void setup (Parser parser) + { + if (parser == null) { + throw new + NullPointerException("Parser argument must not be null"); + } + this.parser = parser; + atts = new AttributesImpl(); + nsSupport = new NamespaceSupport(); + attAdapter = new AttributeListAdapter(); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.XMLReader. + //////////////////////////////////////////////////////////////////// + + + // + // Internal constants for the sake of convenience. + // + private final static String FEATURES = "http://xml.org/sax/features/"; + private final static String NAMESPACES = FEATURES + "namespaces"; + private final static String NAMESPACE_PREFIXES = FEATURES + "namespace-prefixes"; + private final static String VALIDATION = FEATURES + "validation"; + private final static String EXTERNAL_GENERAL = + FEATURES + "external-general-entities"; + private final static String EXTERNAL_PARAMETER = + FEATURES + "external-parameter-entities"; + + + /** + * Set a feature for the parser. + * + *

The only features supported are namespaces and + * namespace-prefixes.

+ * + * @param name The feature name, as a complete URI. + * @param state The requested feature state. + * @exception org.xml.sax.SAXNotRecognizedException If the feature + * name is not known. + * @exception org.xml.sax.SAXNotSupportedException If the feature + * state is not supported. + * @see org.xml.sax.XMLReader#setFeature + */ + public void setFeature (String name, boolean state) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (name.equals(NAMESPACES)) { + checkNotParsing("feature", name); + namespaces = state; + if (!namespaces && !prefixes) { + prefixes = true; + } + } else if (name.equals(NAMESPACE_PREFIXES)) { + checkNotParsing("feature", name); + prefixes = state; + if (!prefixes && !namespaces) { + namespaces = true; + } + } else if (name.equals(VALIDATION) || + name.equals(EXTERNAL_GENERAL) || + name.equals(EXTERNAL_PARAMETER)) { + throw new SAXNotSupportedException("Feature: " + name); + } else { + throw new SAXNotRecognizedException("Feature: " + name); + } + } + + + /** + * Check a parser feature. + * + *

The only features supported are namespaces and + * namespace-prefixes.

+ * + * @param name The feature name, as a complete URI. + * @return The current feature state. + * @exception org.xml.sax.SAXNotRecognizedException If the feature + * name is not known. + * @exception org.xml.sax.SAXNotSupportedException If querying the + * feature state is not supported. + * @see org.xml.sax.XMLReader#setFeature + */ + public boolean getFeature (String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (name.equals(NAMESPACES)) { + return namespaces; + } else if (name.equals(NAMESPACE_PREFIXES)) { + return prefixes; + } else if (name.equals(VALIDATION) || + name.equals(EXTERNAL_GENERAL) || + name.equals(EXTERNAL_PARAMETER)) { + throw new SAXNotSupportedException("Feature: " + name); + } else { + throw new SAXNotRecognizedException("Feature: " + name); + } + } + + + /** + * Set a parser property. + * + *

No special properties are currently supported.

+ * + * @param name The property name. + * @param value The property value. + * @exception org.xml.sax.SAXNotRecognizedException If the feature + * name is not known. + * @exception org.xml.sax.SAXNotSupportedException If the feature + * state is not supported. + * @see org.xml.sax.XMLReader#setProperty + */ + public void setProperty (String name, Object value) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException("Property: " + name); + } + + + /** + * Get a parser property. + * + *

No special properties are currently supported.

+ * + * @param name The property name. + * @return The property value. + * @exception org.xml.sax.SAXNotRecognizedException If the feature + * name is not known. + * @exception org.xml.sax.SAXNotSupportedException If the feature + * state is not supported. + * @see org.xml.sax.XMLReader#getProperty + */ + public Object getProperty (String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + throw new SAXNotRecognizedException("Property: " + name); + } + + + /** + * Set the entity resolver. + * + * @param resolver The new entity resolver. + * @exception java.lang.NullPointerException If the entity resolver + * parameter is null. + * @see org.xml.sax.XMLReader#setEntityResolver + */ + public void setEntityResolver (EntityResolver resolver) + { + if (resolver == null) { + throw new NullPointerException("Null entity resolver"); + } + entityResolver = resolver; + } + + + /** + * Return the current entity resolver. + * + * @return The current entity resolver, or null if none was supplied. + * @see org.xml.sax.XMLReader#getEntityResolver + */ + public EntityResolver getEntityResolver () + { + return entityResolver; + } + + + /** + * Set the DTD handler. + * + * @param resolver The new DTD handler. + * @exception java.lang.NullPointerException If the DTD handler + * parameter is null. + * @see org.xml.sax.XMLReader#setEntityResolver + */ + public void setDTDHandler (DTDHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null DTD handler"); + } + dtdHandler = handler; + } + + + /** + * Return the current DTD handler. + * + * @return The current DTD handler, or null if none was supplied. + * @see org.xml.sax.XMLReader#getEntityResolver + */ + public DTDHandler getDTDHandler () + { + return dtdHandler; + } + + + /** + * Set the content handler. + * + * @param resolver The new content handler. + * @exception java.lang.NullPointerException If the content handler + * parameter is null. + * @see org.xml.sax.XMLReader#setEntityResolver + */ + public void setContentHandler (ContentHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null content handler"); + } + contentHandler = handler; + } + + + /** + * Return the current content handler. + * + * @return The current content handler, or null if none was supplied. + * @see org.xml.sax.XMLReader#getEntityResolver + */ + public ContentHandler getContentHandler () + { + return contentHandler; + } + + + /** + * Set the error handler. + * + * @param resolver The new error handler. + * @exception java.lang.NullPointerException If the error handler + * parameter is null. + * @see org.xml.sax.XMLReader#setEntityResolver + */ + public void setErrorHandler (ErrorHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null error handler"); + } + errorHandler = handler; + } + + + /** + * Return the current error handler. + * + * @return The current error handler, or null if none was supplied. + * @see org.xml.sax.XMLReader#getEntityResolver + */ + public ErrorHandler getErrorHandler () + { + return errorHandler; + } + + + /** + * Parse an XML document. + * + * @param systemId The absolute URL of the document. + * @exception java.io.IOException If there is a problem reading + * the raw content of the document. + * @exception org.xml.sax.SAXException If there is a problem + * processing the document. + * @see #parse(org.xml.sax.InputSource) + * @see org.xml.sax.Parser#parse(java.lang.String) + */ + public void parse (String systemId) + throws IOException, SAXException + { + parse(new InputSource(systemId)); + } + + + /** + * Parse an XML document. + * + * @param input An input source for the document. + * @exception java.io.IOException If there is a problem reading + * the raw content of the document. + * @exception org.xml.sax.SAXException If there is a problem + * processing the document. + * @see #parse(java.lang.String) + * @see org.xml.sax.Parser#parse(org.xml.sax.InputSource) + */ + public void parse (InputSource input) + throws IOException, SAXException + { + if (parsing) { + throw new SAXException("Parser is already in use"); + } + setupParser(); + parsing = true; + try { + parser.parse(input); + } finally { + parsing = false; + } + parsing = false; + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.DocumentHandler. + //////////////////////////////////////////////////////////////////// + + + /** + * Adapt a SAX1 document locator event. + * + * @param locator A document locator. + * @see org.xml.sax.ContentHandler#setDocumentLocator + */ + public void setDocumentLocator (Locator locator) + { + this.locator = locator; + if (contentHandler != null) { + contentHandler.setDocumentLocator(locator); + } + } + + + /** + * Adapt a SAX1 start document event. + * + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#startDocument + */ + public void startDocument () + throws SAXException + { + if (contentHandler != null) { + contentHandler.startDocument(); + } + } + + + /** + * Adapt a SAX1 end document event. + * + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#endDocument + */ + public void endDocument () + throws SAXException + { + if (contentHandler != null) { + contentHandler.endDocument(); + } + } + + + /** + * Adapt a SAX1 startElement event. + * + *

If necessary, perform Namespace processing.

+ * + * @param qName The qualified (prefixed) name. + * @param qAtts The XML 1.0 attribute list (with qnames). + */ + public void startElement (String qName, AttributeList qAtts) + throws SAXException + { + // If we're not doing Namespace + // processing, dispatch this quickly. + if (!namespaces) { + if (contentHandler != null) { + attAdapter.setAttributeList(qAtts); + contentHandler.startElement("", "", qName.intern(), + attAdapter); + } + return; + } + + + // OK, we're doing Namespace processing. + nsSupport.pushContext(); + boolean seenDecl = false; + atts.clear(); + + // Take a first pass and copy all + // attributes into the SAX2 attribute + // list, noting any Namespace + // declarations. + int length = qAtts.getLength(); + for (int i = 0; i < length; i++) { + String attQName = qAtts.getName(i); + String type = qAtts.getType(i); + String value = qAtts.getValue(i); + + // Found a declaration... + if (attQName.startsWith("xmlns")) { + String prefix; + int n = attQName.indexOf(':'); + if (n == -1) { + prefix = ""; + } else { + prefix = attQName.substring(n+1); + } + if (!nsSupport.declarePrefix(prefix, value)) { + reportError("Illegal Namespace prefix: " + prefix); + } + if (contentHandler != null) { + contentHandler.startPrefixMapping(prefix, value); + } + // We may still have to add this to + // the list. + if (prefixes) { + atts.addAttribute("", "", attQName.intern(), + type, value); + } + seenDecl = true; + + // This isn't a declaration. + } else { + String attName[] = processName(attQName, true); + atts.addAttribute(attName[0], attName[1], attName[2], + type, value); + } + } + + // If there was a Namespace declaration, + // we have to make a second pass just + // to be safe -- this will happen very + // rarely, possibly only once for each + // document. + if (seenDecl) { + length = atts.getLength(); + for (int i = 0; i < length; i++) { + String attQName = atts.getQName(i); + if (!attQName.startsWith("xmlns")) { + String attName[] = processName(attQName, true); + atts.setURI(i, attName[0]); + atts.setLocalName(i, attName[1]); + } + } + } + + // OK, finally report the event. + if (contentHandler != null) { + String name[] = processName(qName, false); + contentHandler.startElement(name[0], name[1], name[2], atts); + } + } + + + /** + * Adapt a SAX1 end element event. + * + * @param qName The qualified (prefixed) name. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#endElement + */ + public void endElement (String qName) + throws SAXException + { + // If we're not doing Namespace + // processing, dispatch this quickly. + if (!namespaces) { + if (contentHandler != null) { + contentHandler.endElement("", "", qName.intern()); + } + return; + } + + // Split the name. + String names[] = processName(qName, false); + if (contentHandler != null) { + contentHandler.endElement(names[0], names[1], names[2]); + Enumeration prefixes = nsSupport.getDeclaredPrefixes(); + while (prefixes.hasMoreElements()) { + String prefix = (String)prefixes.nextElement(); + contentHandler.endPrefixMapping(prefix); + } + } + nsSupport.popContext(); + } + + + /** + * Adapt a SAX1 characters event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#characters + */ + public void characters (char ch[], int start, int length) + throws SAXException + { + if (contentHandler != null) { + contentHandler.characters(ch, start, length); + } + } + + + /** + * Adapt a SAX1 ignorable whitespace event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#ignorableWhitespace + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException + { + if (contentHandler != null) { + contentHandler.ignorableWhitespace(ch, start, length); + } + } + + + /** + * Adapt a SAX1 processing instruction event. + * + * @param target The processing instruction target. + * @param data The remainder of the processing instruction + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.DocumentHandler#processingInstruction + */ + public void processingInstruction (String target, String data) + throws SAXException + { + if (contentHandler != null) { + contentHandler.processingInstruction(target, data); + } + } + + + + //////////////////////////////////////////////////////////////////// + // Internal utility methods. + //////////////////////////////////////////////////////////////////// + + + /** + * Initialize the parser before each run. + */ + private void setupParser () + { + nsSupport.reset(); + + if (entityResolver != null) { + parser.setEntityResolver(entityResolver); + } + if (dtdHandler != null) { + parser.setDTDHandler(dtdHandler); + } + if (errorHandler != null) { + parser.setErrorHandler(errorHandler); + } + parser.setDocumentHandler(this); + locator = null; + } + + + /** + * Process a qualified (prefixed) name. + * + *

If the name has an undeclared prefix, use only the qname + * and make an ErrorHandler.error callback in case the app is + * interested.

+ * + * @param qName The qualified (prefixed) name. + * @param isAttribute true if this is an attribute name. + * @return The name split into three parts. + * @exception org.xml.sax.SAXException The client may throw + * an exception if there is an error callback. + */ + private String [] processName (String qName, boolean isAttribute) + throws SAXException + { + String parts[] = nsSupport.processName(qName, nameParts, + isAttribute); + if (parts == null) { + parts = new String[3]; + parts[2] = qName.intern(); + reportError("Undeclared prefix: " + qName); + } + return parts; + } + + + /** + * Report a non-fatal error. + * + * @param message The error message. + * @exception org.xml.sax.SAXException The client may throw + * an exception. + */ + void reportError (String message) + throws SAXException + { + if (errorHandler == null) { + return; + } + + SAXParseException e; + if (locator != null) { + e = new SAXParseException(message, locator); + } else { + e = new SAXParseException(message, null, null, -1, -1); + } + errorHandler.error(e); + } + + + /** + * Throw an exception if we are parsing. + * + *

Use this method to detect illegal feature or + * property changes.

+ * + * @param type The type of thing (feature or property). + * @param name The feature or property name. + * @exception org.xml.sax.SAXNotSupportedException If a + * document is currently being parsed. + */ + private void checkNotParsing (String type, String name) + throws SAXNotSupportedException + { + if (parsing) { + throw new SAXNotSupportedException("Cannot change " + + type + ' ' + + name + " while parsing"); + + } + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + private NamespaceSupport nsSupport; + private AttributeListAdapter attAdapter; + + private boolean parsing = false; + private String nameParts[] = new String[3]; + + private Parser parser = null; + + private AttributesImpl atts = null; + + // Features + private boolean namespaces = true; + private boolean prefixes = false; + + // Properties + + // Handlers + Locator locator; + + EntityResolver entityResolver = null; + DTDHandler dtdHandler = null; + ContentHandler contentHandler = null; + ErrorHandler errorHandler = null; + + + + //////////////////////////////////////////////////////////////////// + // Inner class to wrap an AttributeList when not doing NS proc. + //////////////////////////////////////////////////////////////////// + + + /** + * Adapt a SAX1 AttributeList as a SAX2 Attributes object. + * + *

This class is in the Public Domain, and comes with NO + * WARRANTY of any kind.

+ * + *

This wrapper class is used only when Namespace support + * is disabled -- it provides pretty much a direct mapping + * from SAX1 to SAX2, except that names and types are + * interned whenever requested.

+ */ + final class AttributeListAdapter implements Attributes + { + + /** + * Construct a new adapter. + */ + AttributeListAdapter () + { + } + + + /** + * Set the embedded AttributeList. + * + *

This method must be invoked before any of the others + * can be used.

+ * + * @param The SAX1 attribute list (with qnames). + */ + void setAttributeList (AttributeList qAtts) + { + this.qAtts = qAtts; + } + + + /** + * Return the length of the attribute list. + * + * @return The number of attributes in the list. + * @see org.xml.sax.Attributes#getLength + */ + public int getLength () + { + return qAtts.getLength(); + } + + + /** + * Return the Namespace URI of the specified attribute. + * + * @param The attribute's index. + * @return Always the empty string. + * @see org.xml.sax.Attributes#getURI + */ + public String getURI (int i) + { + return ""; + } + + + /** + * Return the local name of the specified attribute. + * + * @param The attribute's index. + * @return Always the empty string. + * @see org.xml.sax.Attributes#getLocalName + */ + public String getLocalName (int i) + { + return ""; + } + + + /** + * Return the qualified (prefixed) name of the specified attribute. + * + * @param The attribute's index. + * @return The attribute's qualified name, internalized. + */ + public String getQName (int i) + { + return qAtts.getName(i).intern(); + } + + + /** + * Return the type of the specified attribute. + * + * @param The attribute's index. + * @return The attribute's type as an internalized string. + */ + public String getType (int i) + { + return qAtts.getType(i).intern(); + } + + + /** + * Return the value of the specified attribute. + * + * @param The attribute's index. + * @return The attribute's value. + */ + public String getValue (int i) + { + return qAtts.getValue(i); + } + + + /** + * Look up an attribute index by Namespace name. + * + * @param uri The Namespace URI or the empty string. + * @param localName The local name. + * @return The attributes index, or -1 if none was found. + * @see org.xml.sax.Attributes#getIndex(java.lang.String,java.lang.String) + */ + public int getIndex (String uri, String localName) + { + return -1; + } + + + /** + * Look up an attribute index by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attributes index, or -1 if none was found. + * @see org.xml.sax.Attributes#getIndex(java.lang.String) + */ + public int getIndex (String qName) + { + int max = atts.getLength(); + for (int i = 0; i < max; i++) { + if (qAtts.getName(i).equals(qName)) { + return i; + } + } + return -1; + } + + + /** + * Look up the type of an attribute by Namespace name. + * + * @param uri The Namespace URI + * @param localName The local name. + * @return The attribute's type as an internalized string. + */ + public String getType (String uri, String localName) + { + return null; + } + + + /** + * Look up the type of an attribute by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attribute's type as an internalized string. + */ + public String getType (String qName) + { + return qAtts.getType(qName).intern(); + } + + + /** + * Look up the value of an attribute by Namespace name. + * + * @param uri The Namespace URI + * @param localName The local name. + * @return The attribute's value. + */ + public String getValue (String uri, String localName) + { + return null; + } + + + /** + * Look up the value of an attribute by qualified (prefixed) name. + * + * @param qName The qualified name. + * @return The attribute's value. + */ + public String getValue (String qName) + { + return qAtts.getValue(qName); + } + + private AttributeList qAtts; + } +} + +// end of ParserAdapter.java diff --git a/libjava/org/xml/sax/helpers/ParserFactory.java b/libjava/org/xml/sax/helpers/ParserFactory.java new file mode 100644 index 00000000000..9ca7b55002f --- /dev/null +++ b/libjava/org/xml/sax/helpers/ParserFactory.java @@ -0,0 +1,129 @@ +// SAX parser factory. +// No warranty; no copyright -- use this as you will. +// $Id: ParserFactory.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import java.lang.ClassNotFoundException; +import java.lang.IllegalAccessException; +import java.lang.InstantiationException; +import java.lang.SecurityException; +import java.lang.ClassCastException; + +import org.xml.sax.Parser; + + +/** + * Java-specific class for dynamically loading SAX parsers. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

Note: This class is designed to work with the now-deprecated + * SAX1 {@link org.xml.sax.Parser Parser} class. SAX2 applications should use + * {@link org.xml.sax.helpers.XMLReaderFactory XMLReaderFactory} instead.

+ * + *

ParserFactory is not part of the platform-independent definition + * of SAX; it is an additional convenience class designed + * specifically for Java XML application writers. SAX applications + * can use the static methods in this class to allocate a SAX parser + * dynamically at run-time based either on the value of the + * `org.xml.sax.parser' system property or on a string containing the class + * name.

+ * + *

Note that the application still requires an XML parser that + * implements SAX1.

+ * + * @deprecated This class works with the deprecated + * {@link org.xml.sax.Parser Parser} + * interface. + * @since SAX 1.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser + * @see java.lang.Class + */ +public class ParserFactory { + + + /** + * Private null constructor. + */ + private ParserFactory () + { + } + + + /** + * Create a new SAX parser using the `org.xml.sax.parser' system property. + * + *

The named class must exist and must implement the + * {@link org.xml.sax.Parser Parser} interface.

+ * + * @exception java.lang.NullPointerException There is no value + * for the `org.xml.sax.parser' system property. + * @exception java.lang.ClassNotFoundException The SAX parser + * class was not found (check your CLASSPATH). + * @exception IllegalAccessException The SAX parser class was + * found, but you do not have permission to load + * it. + * @exception InstantiationException The SAX parser class was + * found but could not be instantiated. + * @exception java.lang.ClassCastException The SAX parser class + * was found and instantiated, but does not implement + * org.xml.sax.Parser. + * @see #makeParser(java.lang.String) + * @see org.xml.sax.Parser + */ + public static Parser makeParser () + throws ClassNotFoundException, + IllegalAccessException, + InstantiationException, + NullPointerException, + ClassCastException + { + String className = System.getProperty("org.xml.sax.parser"); + if (className == null) { + throw new NullPointerException("No value for sax.parser property"); + } else { + return makeParser(className); + } + } + + + /** + * Create a new SAX parser object using the class name provided. + * + *

The named class must exist and must implement the + * {@link org.xml.sax.Parser Parser} interface.

+ * + * @param className A string containing the name of the + * SAX parser class. + * @exception java.lang.ClassNotFoundException The SAX parser + * class was not found (check your CLASSPATH). + * @exception IllegalAccessException The SAX parser class was + * found, but you do not have permission to load + * it. + * @exception InstantiationException The SAX parser class was + * found but could not be instantiated. + * @exception java.lang.ClassCastException The SAX parser class + * was found and instantiated, but does not implement + * org.xml.sax.Parser. + * @see #makeParser() + * @see org.xml.sax.Parser + */ + public static Parser makeParser (String className) + throws ClassNotFoundException, + IllegalAccessException, + InstantiationException, + ClassCastException + { + return (Parser)(Class.forName(className).newInstance()); + } + +} + +// end of ParserFactory.java diff --git a/libjava/org/xml/sax/helpers/XMLFilterImpl.java b/libjava/org/xml/sax/helpers/XMLFilterImpl.java new file mode 100644 index 00000000000..5b1afaf6c2f --- /dev/null +++ b/libjava/org/xml/sax/helpers/XMLFilterImpl.java @@ -0,0 +1,769 @@ +// XMLFilterImpl.java - base SAX2 filter implementation. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: XMLFilterImpl.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import java.io.IOException; + +import org.xml.sax.XMLReader; +import org.xml.sax.XMLFilter; +import org.xml.sax.InputSource; +import org.xml.sax.Locator; +import org.xml.sax.Attributes; +import org.xml.sax.EntityResolver; +import org.xml.sax.DTDHandler; +import org.xml.sax.ContentHandler; +import org.xml.sax.ErrorHandler; +import org.xml.sax.SAXException; +import org.xml.sax.SAXParseException; +import org.xml.sax.SAXNotSupportedException; +import org.xml.sax.SAXNotRecognizedException; + + +/** + * Base class for deriving an XML filter. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class is designed to sit between an {@link org.xml.sax.XMLReader + * XMLReader} and the client application's event handlers. By default, it + * does nothing but pass requests up to the reader and events + * on to the handlers unmodified, but subclasses can override + * specific methods to modify the event stream or the configuration + * requests as they pass through.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.XMLFilter + * @see org.xml.sax.XMLReader + * @see org.xml.sax.EntityResolver + * @see org.xml.sax.DTDHandler + * @see org.xml.sax.ContentHandler + * @see org.xml.sax.ErrorHandler + */ +public class XMLFilterImpl + implements XMLFilter, EntityResolver, DTDHandler, ContentHandler, ErrorHandler +{ + + + //////////////////////////////////////////////////////////////////// + // Constructors. + //////////////////////////////////////////////////////////////////// + + + /** + * Construct an empty XML filter, with no parent. + * + *

This filter will have no parent: you must assign a parent + * before you start a parse or do any configuration with + * setFeature or setProperty.

+ * + * @see org.xml.sax.XMLReader#setFeature + * @see org.xml.sax.XMLReader#setProperty + */ + public XMLFilterImpl () + { + super(); + } + + + /** + * Construct an XML filter with the specified parent. + * + * @see #setParent + * @see #getParent + */ + public XMLFilterImpl (XMLReader parent) + { + super(); + setParent(parent); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.XMLFilter. + //////////////////////////////////////////////////////////////////// + + + /** + * Set the parent reader. + * + *

This is the {@link org.xml.sax.XMLReader XMLReader} from which + * this filter will obtain its events and to which it will pass its + * configuration requests. The parent may itself be another filter.

+ * + *

If there is no parent reader set, any attempt to parse + * or to set or get a feature or property will fail.

+ * + * @param parent The parent XML reader. + * @exception java.lang.NullPointerException If the parent is null. + * @see #getParent + */ + public void setParent (XMLReader parent) + { + if (parent == null) { + throw new NullPointerException("Null parent"); + } + this.parent = parent; + } + + + /** + * Get the parent reader. + * + * @return The parent XML reader, or null if none is set. + * @see #setParent + */ + public XMLReader getParent () + { + return parent; + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.XMLReader. + //////////////////////////////////////////////////////////////////// + + + /** + * Set the state of a feature. + * + *

This will always fail if the parent is null.

+ * + * @param name The feature name. + * @param state The requested feature state. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the feature name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the feature name but + * cannot set the requested value. + * @see org.xml.sax.XMLReader#setFeature + */ + public void setFeature (String name, boolean state) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (parent != null) { + parent.setFeature(name, state); + } else { + throw new SAXNotRecognizedException("Feature: " + name); + } + } + + + /** + * Look up the state of a feature. + * + *

This will always fail if the parent is null.

+ * + * @param name The feature name. + * @return The current state of the feature. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the feature name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the feature name but + * cannot determine its state at this time. + * @see org.xml.sax.XMLReader#getFeature + */ + public boolean getFeature (String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (parent != null) { + return parent.getFeature(name); + } else { + throw new SAXNotRecognizedException("Feature: " + name); + } + } + + + /** + * Set the value of a property. + * + *

This will always fail if the parent is null.

+ * + * @param name The property name. + * @param state The requested property value. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the property name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the property name but + * cannot set the requested value. + * @see org.xml.sax.XMLReader#setProperty + */ + public void setProperty (String name, Object value) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (parent != null) { + parent.setProperty(name, value); + } else { + throw new SAXNotRecognizedException("Property: " + name); + } + } + + + /** + * Look up the value of a property. + * + * @param name The property name. + * @return The current value of the property. + * @exception org.xml.sax.SAXNotRecognizedException When the + * XMLReader does not recognize the feature name. + * @exception org.xml.sax.SAXNotSupportedException When the + * XMLReader recognizes the property name but + * cannot determine its value at this time. + * @see org.xml.sax.XMLReader#setFeature + */ + public Object getProperty (String name) + throws SAXNotRecognizedException, SAXNotSupportedException + { + if (parent != null) { + return parent.getProperty(name); + } else { + throw new SAXNotRecognizedException("Property: " + name); + } + } + + + /** + * Set the entity resolver. + * + * @param resolver The new entity resolver. + * @exception java.lang.NullPointerException If the resolver + * is null. + * @see org.xml.sax.XMLReader#setEntityResolver + */ + public void setEntityResolver (EntityResolver resolver) + { + if (resolver == null) { + throw new NullPointerException("Null entity resolver"); + } else { + entityResolver = resolver; + } + } + + + /** + * Get the current entity resolver. + * + * @return The current entity resolver, or null if none was set. + * @see org.xml.sax.XMLReader#getEntityResolver + */ + public EntityResolver getEntityResolver () + { + return entityResolver; + } + + + /** + * Set the DTD event handler. + * + * @param resolver The new DTD handler. + * @exception java.lang.NullPointerException If the handler + * is null. + * @see org.xml.sax.XMLReader#setDTDHandler + */ + public void setDTDHandler (DTDHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null DTD handler"); + } else { + dtdHandler = handler; + } + } + + + /** + * Get the current DTD event handler. + * + * @return The current DTD handler, or null if none was set. + * @see org.xml.sax.XMLReader#getDTDHandler + */ + public DTDHandler getDTDHandler () + { + return dtdHandler; + } + + + /** + * Set the content event handler. + * + * @param resolver The new content handler. + * @exception java.lang.NullPointerException If the handler + * is null. + * @see org.xml.sax.XMLReader#setContentHandler + */ + public void setContentHandler (ContentHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null content handler"); + } else { + contentHandler = handler; + } + } + + + /** + * Get the content event handler. + * + * @return The current content handler, or null if none was set. + * @see org.xml.sax.XMLReader#getContentHandler + */ + public ContentHandler getContentHandler () + { + return contentHandler; + } + + + /** + * Set the error event handler. + * + * @param handle The new error handler. + * @exception java.lang.NullPointerException If the handler + * is null. + * @see org.xml.sax.XMLReader#setErrorHandler + */ + public void setErrorHandler (ErrorHandler handler) + { + if (handler == null) { + throw new NullPointerException("Null error handler"); + } else { + errorHandler = handler; + } + } + + + /** + * Get the current error event handler. + * + * @return The current error handler, or null if none was set. + * @see org.xml.sax.XMLReader#getErrorHandler + */ + public ErrorHandler getErrorHandler () + { + return errorHandler; + } + + + /** + * Parse a document. + * + * @param input The input source for the document entity. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see org.xml.sax.XMLReader#parse(org.xml.sax.InputSource) + */ + public void parse (InputSource input) + throws SAXException, IOException + { + setupParse(); + parent.parse(input); + } + + + /** + * Parse a document. + * + * @param systemId The system identifier as a fully-qualified URI. + * @exception org.xml.sax.SAXException Any SAX exception, possibly + * wrapping another exception. + * @exception java.io.IOException An IO exception from the parser, + * possibly from a byte stream or character stream + * supplied by the application. + * @see org.xml.sax.XMLReader#parse(java.lang.String) + */ + public void parse (String systemId) + throws SAXException, IOException + { + parse(new InputSource(systemId)); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.EntityResolver. + //////////////////////////////////////////////////////////////////// + + + /** + * Filter an external entity resolution. + * + * @param publicId The entity's public identifier, or null. + * @param systemId The entity's system identifier. + * @return A new InputSource or null for the default. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @exception java.io.IOException The client may throw an + * I/O-related exception while obtaining the + * new InputSource. + * @see org.xml.sax.EntityResolver#resolveEntity + */ + public InputSource resolveEntity (String publicId, String systemId) + throws SAXException, IOException + { + if (entityResolver != null) { + return entityResolver.resolveEntity(publicId, systemId); + } else { + return null; + } + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.DTDHandler. + //////////////////////////////////////////////////////////////////// + + + /** + * Filter a notation declaration event. + * + * @param name The notation name. + * @param publicId The notation's public identifier, or null. + * @param systemId The notation's system identifier, or null. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.DTDHandler#notationDecl + */ + public void notationDecl (String name, String publicId, String systemId) + throws SAXException + { + if (dtdHandler != null) { + dtdHandler.notationDecl(name, publicId, systemId); + } + } + + + /** + * Filter an unparsed entity declaration event. + * + * @param name The entity name. + * @param publicId The entity's public identifier, or null. + * @param systemId The entity's system identifier, or null. + * @param notationName The name of the associated notation. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.DTDHandler#unparsedEntityDecl + */ + public void unparsedEntityDecl (String name, String publicId, + String systemId, String notationName) + throws SAXException + { + if (dtdHandler != null) { + dtdHandler.unparsedEntityDecl(name, publicId, systemId, + notationName); + } + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.ContentHandler. + //////////////////////////////////////////////////////////////////// + + + /** + * Filter a new document locator event. + * + * @param locator The document locator. + * @see org.xml.sax.ContentHandler#setDocumentLocator + */ + public void setDocumentLocator (Locator locator) + { + this.locator = locator; + if (contentHandler != null) { + contentHandler.setDocumentLocator(locator); + } + } + + + /** + * Filter a start document event. + * + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#startDocument + */ + public void startDocument () + throws SAXException + { + if (contentHandler != null) { + contentHandler.startDocument(); + } + } + + + /** + * Filter an end document event. + * + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#endDocument + */ + public void endDocument () + throws SAXException + { + if (contentHandler != null) { + contentHandler.endDocument(); + } + } + + + /** + * Filter a start Namespace prefix mapping event. + * + * @param prefix The Namespace prefix. + * @param uri The Namespace URI. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#startPrefixMapping + */ + public void startPrefixMapping (String prefix, String uri) + throws SAXException + { + if (contentHandler != null) { + contentHandler.startPrefixMapping(prefix, uri); + } + } + + + /** + * Filter an end Namespace prefix mapping event. + * + * @param prefix The Namespace prefix. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#endPrefixMapping + */ + public void endPrefixMapping (String prefix) + throws SAXException + { + if (contentHandler != null) { + contentHandler.endPrefixMapping(prefix); + } + } + + + /** + * Filter a start element event. + * + * @param uri The element's Namespace URI, or the empty string. + * @param localName The element's local name, or the empty string. + * @param qName The element's qualified (prefixed) name, or the empty + * string. + * @param atts The element's attributes. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#startElement + */ + public void startElement (String uri, String localName, String qName, + Attributes atts) + throws SAXException + { + if (contentHandler != null) { + contentHandler.startElement(uri, localName, qName, atts); + } + } + + + /** + * Filter an end element event. + * + * @param uri The element's Namespace URI, or the empty string. + * @param localName The element's local name, or the empty string. + * @param qName The element's qualified (prefixed) name, or the empty + * string. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#endElement + */ + public void endElement (String uri, String localName, String qName) + throws SAXException + { + if (contentHandler != null) { + contentHandler.endElement(uri, localName, qName); + } + } + + + /** + * Filter a character data event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use from the array. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#characters + */ + public void characters (char ch[], int start, int length) + throws SAXException + { + if (contentHandler != null) { + contentHandler.characters(ch, start, length); + } + } + + + /** + * Filter an ignorable whitespace event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use from the array. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#ignorableWhitespace + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException + { + if (contentHandler != null) { + contentHandler.ignorableWhitespace(ch, start, length); + } + } + + + /** + * Filter a processing instruction event. + * + * @param target The processing instruction target. + * @param data The text following the target. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#processingInstruction + */ + public void processingInstruction (String target, String data) + throws SAXException + { + if (contentHandler != null) { + contentHandler.processingInstruction(target, data); + } + } + + + /** + * Filter a skipped entity event. + * + * @param name The name of the skipped entity. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ContentHandler#skippedEntity + */ + public void skippedEntity (String name) + throws SAXException + { + if (contentHandler != null) { + contentHandler.skippedEntity(name); + } + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.ErrorHandler. + //////////////////////////////////////////////////////////////////// + + + /** + * Filter a warning event. + * + * @param e The nwarning as an exception. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ErrorHandler#warning + */ + public void warning (SAXParseException e) + throws SAXException + { + if (errorHandler != null) { + errorHandler.warning(e); + } + } + + + /** + * Filter an error event. + * + * @param e The error as an exception. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ErrorHandler#error + */ + public void error (SAXParseException e) + throws SAXException + { + if (errorHandler != null) { + errorHandler.error(e); + } + } + + + /** + * Filter a fatal error event. + * + * @param e The error as an exception. + * @exception org.xml.sax.SAXException The client may throw + * an exception during processing. + * @see org.xml.sax.ErrorHandler#fatalError + */ + public void fatalError (SAXParseException e) + throws SAXException + { + if (errorHandler != null) { + errorHandler.fatalError(e); + } + } + + + + //////////////////////////////////////////////////////////////////// + // Internal methods. + //////////////////////////////////////////////////////////////////// + + + /** + * Set up before a parse. + * + *

Before every parse, check whether the parent is + * non-null, and re-register the filter for all of the + * events.

+ */ + private void setupParse () + { + if (parent == null) { + throw new NullPointerException("No parent for filter"); + } + parent.setEntityResolver(this); + parent.setDTDHandler(this); + parent.setContentHandler(this); + parent.setErrorHandler(this); + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + private XMLReader parent = null; + private Locator locator = null; + private EntityResolver entityResolver = null; + private DTDHandler dtdHandler = null; + private ContentHandler contentHandler = null; + private ErrorHandler errorHandler = null; + +} + +// end of XMLFilterImpl.java diff --git a/libjava/org/xml/sax/helpers/XMLReaderAdapter.java b/libjava/org/xml/sax/helpers/XMLReaderAdapter.java new file mode 100644 index 00000000000..4fb44d91d8e --- /dev/null +++ b/libjava/org/xml/sax/helpers/XMLReaderAdapter.java @@ -0,0 +1,526 @@ +// XMLReaderAdapter.java - adapt an SAX2 XMLReader to a SAX1 Parser +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the public domain. + +// $Id: XMLReaderAdapter.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; + +import java.io.IOException; +import java.util.Locale; + +import org.xml.sax.Parser; // deprecated +import org.xml.sax.Locator; +import org.xml.sax.InputSource; +import org.xml.sax.AttributeList; // deprecated +import org.xml.sax.EntityResolver; +import org.xml.sax.DTDHandler; +import org.xml.sax.DocumentHandler; // deprecated +import org.xml.sax.ErrorHandler; +import org.xml.sax.SAXException; + +import org.xml.sax.XMLReader; +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.SAXNotSupportedException; + + +/** + * Adapt a SAX2 XMLReader as a SAX1 Parser. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class wraps a SAX2 {@link org.xml.sax.XMLReader XMLReader} + * and makes it act as a SAX1 {@link org.xml.sax.Parser Parser}. The XMLReader + * must support a true value for the + * http://xml.org/sax/features/namespace-prefixes property or parsing will fail + * with a {@link org.xml.sax.SAXException SAXException}; if the XMLReader + * supports a false value for the http://xml.org/sax/features/namespaces + * property, that will also be used to improve efficiency.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.Parser + * @see org.xml.sax.XMLReader + */ +public class XMLReaderAdapter implements Parser, ContentHandler +{ + + + //////////////////////////////////////////////////////////////////// + // Constructor. + //////////////////////////////////////////////////////////////////// + + + /** + * Create a new adapter. + * + *

Use the "org.xml.sax.driver" property to locate the SAX2 + * driver to embed.

+ * + * @exception org.xml.sax.SAXException If the embedded driver + * cannot be instantiated or if the + * org.xml.sax.driver property is not specified. + */ + public XMLReaderAdapter () + throws SAXException + { + setup(XMLReaderFactory.createXMLReader()); + } + + + /** + * Create a new adapter. + * + *

Create a new adapter, wrapped around a SAX2 XMLReader. + * The adapter will make the XMLReader act like a SAX1 + * Parser.

+ * + * @param xmlReader The SAX2 XMLReader to wrap. + * @exception java.lang.NullPointerException If the argument is null. + */ + public XMLReaderAdapter (XMLReader xmlReader) + { + setup(xmlReader); + } + + + + /** + * Internal setup. + * + * @param xmlReader The embedded XMLReader. + */ + private void setup (XMLReader xmlReader) + { + if (xmlReader == null) { + throw new NullPointerException("XMLReader must not be null"); + } + this.xmlReader = xmlReader; + qAtts = new AttributesAdapter(); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.Parser. + //////////////////////////////////////////////////////////////////// + + + /** + * Set the locale for error reporting. + * + *

This is not supported in SAX2, and will always throw + * an exception.

+ * + * @param The locale for error reporting. + * @see org.xml.sax.Parser#setLocale + */ + public void setLocale (Locale locale) + throws SAXException + { + throw new SAXNotSupportedException("setLocale not supported"); + } + + + /** + * Register the entity resolver. + * + * @param resolver The new resolver. + * @see org.xml.sax.Parser#setEntityResolver + */ + public void setEntityResolver (EntityResolver resolver) + { + xmlReader.setEntityResolver(resolver); + } + + + /** + * Register the DTD event handler. + * + * @param handler The new DTD event handler. + * @see org.xml.sax.Parser#setDTDHandler + */ + public void setDTDHandler (DTDHandler handler) + { + xmlReader.setDTDHandler(handler); + } + + + /** + * Register the SAX1 document event handler. + * + *

Note that the SAX1 document handler has no Namespace + * support.

+ * + * @param handler The new SAX1 document event handler. + * @see org.xml.sax.Parser#setDocumentHandler + */ + public void setDocumentHandler (DocumentHandler handler) + { + documentHandler = handler; + } + + + /** + * Register the error event handler. + * + * @param handler The new error event handler. + * @see org.xml.sax.Parser#setErrorHandler + */ + public void setErrorHandler (ErrorHandler handler) + { + xmlReader.setErrorHandler(handler); + } + + + /** + * Parse the document. + * + *

This method will throw an exception if the embedded + * XMLReader does not support the + * http://xml.org/sax/features/namespace-prefixes property.

+ * + * @param systemId The absolute URL of the document. + * @exception java.io.IOException If there is a problem reading + * the raw content of the document. + * @exception org.xml.sax.SAXException If there is a problem + * processing the document. + * @see #parse(org.xml.sax.InputSource) + * @see org.xml.sax.Parser#parse(java.lang.String) + */ + public void parse (String systemId) + throws IOException, SAXException + { + parse(new InputSource(systemId)); + } + + + /** + * Parse the document. + * + *

This method will throw an exception if the embedded + * XMLReader does not support the + * http://xml.org/sax/features/namespace-prefixes property.

+ * + * @param input An input source for the document. + * @exception java.io.IOException If there is a problem reading + * the raw content of the document. + * @exception org.xml.sax.SAXException If there is a problem + * processing the document. + * @see #parse(java.lang.String) + * @see org.xml.sax.Parser#parse(org.xml.sax.InputSource) + */ + public void parse (InputSource input) + throws IOException, SAXException + { + setupXMLReader(); + xmlReader.parse(input); + } + + + /** + * Set up the XML reader. + */ + private void setupXMLReader () + throws SAXException + { + xmlReader.setFeature("http://xml.org/sax/features/namespace-prefixes", true); + try { + xmlReader.setFeature("http://xml.org/sax/features/namespaces", + false); + } catch (SAXException e) { + // NO OP: it's just extra information, and we can ignore it + } + xmlReader.setContentHandler(this); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.ContentHandler. + //////////////////////////////////////////////////////////////////// + + + /** + * Set a document locator. + * + * @param locator The document locator. + * @see org.xml.sax.ContentHandler#setDocumentLocator + */ + public void setDocumentLocator (Locator locator) + { + documentHandler.setDocumentLocator(locator); + } + + + /** + * Start document event. + * + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#startDocument + */ + public void startDocument () + throws SAXException + { + documentHandler.startDocument(); + } + + + /** + * End document event. + * + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#endDocument + */ + public void endDocument () + throws SAXException + { + documentHandler.endDocument(); + } + + + /** + * Adapt a SAX2 start prefix mapping event. + * + * @param prefix The prefix being mapped. + * @param uri The Namespace URI being mapped to. + * @see org.xml.sax.ContentHandler#startPrefixMapping + */ + public void startPrefixMapping (String prefix, String uri) + { + } + + + /** + * Adapt a SAX2 end prefix mapping event. + * + * @param prefix The prefix being mapped. + * @see org.xml.sax.ContentHandler#endPrefixMapping + */ + public void endPrefixMapping (String prefix) + { + } + + + /** + * Adapt a SAX2 start element event. + * + * @param uri The Namespace URI. + * @param localName The Namespace local name. + * @param qName The qualified (prefixed) name. + * @param atts The SAX2 attributes. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#endDocument + */ + public void startElement (String uri, String localName, + String qName, Attributes atts) + throws SAXException + { + qAtts.setAttributes(atts); + documentHandler.startElement(qName, qAtts); + } + + + /** + * Adapt a SAX2 end element event. + * + * @param uri The Namespace URI. + * @param localName The Namespace local name. + * @param qName The qualified (prefixed) name. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#endElement + */ + public void endElement (String uri, String localName, + String qName) + throws SAXException + { + documentHandler.endElement(qName); + } + + + /** + * Adapt a SAX2 characters event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#characters + */ + public void characters (char ch[], int start, int length) + throws SAXException + { + documentHandler.characters(ch, start, length); + } + + + /** + * Adapt a SAX2 ignorable whitespace event. + * + * @param ch An array of characters. + * @param start The starting position in the array. + * @param length The number of characters to use. + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#ignorableWhitespace + */ + public void ignorableWhitespace (char ch[], int start, int length) + throws SAXException + { + documentHandler.ignorableWhitespace(ch, start, length); + } + + + /** + * Adapt a SAX2 processing instruction event. + * + * @param target The processing instruction target. + * @param data The remainder of the processing instruction + * @exception org.xml.sax.SAXException The client may raise a + * processing exception. + * @see org.xml.sax.ContentHandler#processingInstruction + */ + public void processingInstruction (String target, String data) + throws SAXException + { + documentHandler.processingInstruction(target, data); + } + + + /** + * Adapt a SAX2 skipped entity event. + * + * @param name The name of the skipped entity. + * @see org.xml.sax.ContentHandler#skippedEntity + */ + public void skippedEntity (String name) + throws SAXException + { + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + XMLReader xmlReader; + DocumentHandler documentHandler; + AttributesAdapter qAtts; + + + + //////////////////////////////////////////////////////////////////// + // Internal class. + //////////////////////////////////////////////////////////////////// + + + /** + * Internal class to wrap a SAX2 Attributes object for SAX1. + */ + final class AttributesAdapter implements AttributeList + { + AttributesAdapter () + { + } + + + /** + * Set the embedded Attributes object. + * + * @param The embedded SAX2 Attributes. + */ + void setAttributes (Attributes attributes) + { + this.attributes = attributes; + } + + + /** + * Return the number of attributes. + * + * @return The length of the attribute list. + * @see org.xml.sax.AttributeList#getLength + */ + public int getLength () + { + return attributes.getLength(); + } + + + /** + * Return the qualified (prefixed) name of an attribute by position. + * + * @return The qualified name. + * @see org.xml.sax.AttributeList#getName + */ + public String getName (int i) + { + return attributes.getQName(i); + } + + + /** + * Return the type of an attribute by position. + * + * @return The type. + * @see org.xml.sax.AttributeList#getType(int) + */ + public String getType (int i) + { + return attributes.getType(i); + } + + + /** + * Return the value of an attribute by position. + * + * @return The value. + * @see org.xml.sax.AttributeList#getValue(int) + */ + public String getValue (int i) + { + return attributes.getValue(i); + } + + + /** + * Return the type of an attribute by qualified (prefixed) name. + * + * @return The type. + * @see org.xml.sax.AttributeList#getType(java.lang.String) + */ + public String getType (String qName) + { + return attributes.getType(qName); + } + + + /** + * Return the value of an attribute by qualified (prefixed) name. + * + * @return The value. + * @see org.xml.sax.AttributeList#getValue(java.lang.String) + */ + public String getValue (String qName) + { + return attributes.getValue(qName); + } + + private Attributes attributes; + } + +} + +// end of XMLReaderAdapter.java diff --git a/libjava/org/xml/sax/helpers/XMLReaderFactory.java b/libjava/org/xml/sax/helpers/XMLReaderFactory.java new file mode 100644 index 00000000000..9443b27dcca --- /dev/null +++ b/libjava/org/xml/sax/helpers/XMLReaderFactory.java @@ -0,0 +1,136 @@ +// XMLReaderFactory.java - factory for creating a new reader. +// Written by David Megginson, sax@megginson.com +// NO WARRANTY! This class is in the Public Domain. + +// $Id: XMLReaderFactory.java,v 1.1 2000/10/02 02:43:20 sboag Exp $ + +package org.xml.sax.helpers; +import org.xml.sax.Parser; +import org.xml.sax.XMLReader; +import org.xml.sax.SAXException; + + +/** + * Factory for creating an XML reader. + * + *
+ * This module, both source code and documentation, is in the + * Public Domain, and comes with NO WARRANTY. + *
+ * + *

This class contains static methods for creating an XML reader + * from an explicit class name, or for creating an XML reader based + * on the value of the org.xml.sax.driver system + * property:

+ * + * 
+ * try {
+ *   XMLReader myReader = XMLReaderFactory.createXMLReader();
+ * } catch (SAXException e) {
+ *   System.err.println(e.getMessage());
+ * }
+ *
+ * + *

Note that these methods will not be usable in environments where + * system properties are not accessible or where the application or + * applet is not permitted to load classes dynamically.

+ * + *

Note to implementors: SAX implementations in specialized + * environments may replace this class with a different one optimized for the + * environment, as long as its method signatures remain the same.

+ * + * @since SAX 2.0 + * @author David Megginson, + * sax@megginson.com + * @version 2.0 + * @see org.xml.sax.XMLReader + */ +final public class XMLReaderFactory +{ + + /** + * Private constructor. + * + *

This constructor prevents the class from being instantiated.

+ */ + private XMLReaderFactory () + { + } + + + /** + * Attempt to create an XML reader from a system property. + * + *

This method uses the value of the system property + * "org.xml.sax.driver" as the full name of a Java class + * and tries to instantiate that class as a SAX2 + * XMLReader.

+ * + *

Note that many Java interpreters allow system properties + * to be specified on the command line.

+ * + * @return A new XMLReader. + * @exception org.xml.sax.SAXException If the value of the + * "org.xml.sax.driver" system property is null, + * or if the class cannot be loaded and instantiated. + * @see #createXMLReader(java.lang.String) + */ + public static XMLReader createXMLReader () + throws SAXException + { + String className = System.getProperty("org.xml.sax.driver"); + if (className == null) { + Parser parser; + try { + parser = ParserFactory.makeParser(); + } catch (Exception e) { + parser = null; + } + if (parser == null) { + throw new + SAXException("System property org.xml.sax.driver not specified"); + } else { + return new ParserAdapter(parser); + } + } else { + return createXMLReader(className); + } + } + + + /** + * Attempt to create an XML reader from a class name. + * + *

Given a class name, this method attempts to load + * and instantiate the class as an XML reader.

+ * + * @return A new XML reader. + * @exception org.xml.sax.SAXException If the class cannot be + * loaded, instantiated, and cast to XMLReader. + * @see #createXMLReader() + */ + public static XMLReader createXMLReader (String className) + throws SAXException + { + try { + return (XMLReader)(Class.forName(className).newInstance()); + } catch (ClassNotFoundException e1) { + throw new SAXException("SAX2 driver class " + className + + " not found", e1); + } catch (IllegalAccessException e2) { + throw new SAXException("SAX2 driver class " + className + + " found but cannot be loaded", e2); + } catch (InstantiationException e3) { + throw new SAXException("SAX2 driver class " + className + + " loaded but cannot be instantiated (no empty public constructor?)", + e3); + } catch (ClassCastException e4) { + throw new SAXException("SAX2 driver class " + className + + " does not implement XMLReader", e4); + } + + } + +} + +// end of XMLReaderFactory.java -- cgit v1.2.3