diff options
Diffstat (limited to 'libjava/gnu/java/util')
| -rw-r--r-- | libjava/gnu/java/util/DoubleEnumeration.java | 138 | ||||
| -rw-r--r-- | libjava/gnu/java/util/EmptyEnumeration.java | 96 | ||||
| -rw-r--r-- | libjava/gnu/java/util/prefs/FileBasedFactory.java | 57 | ||||
| -rw-r--r-- | libjava/gnu/java/util/prefs/MemoryBasedFactory.java | 64 | ||||
| -rw-r--r-- | libjava/gnu/java/util/prefs/MemoryBasedPreferences.java | 144 | ||||
| -rw-r--r-- | libjava/gnu/java/util/prefs/NodeReader.java | 223 | ||||
| -rw-r--r-- | libjava/gnu/java/util/prefs/NodeWriter.java | 315 |
7 files changed, 0 insertions, 1037 deletions
diff --git a/libjava/gnu/java/util/DoubleEnumeration.java b/libjava/gnu/java/util/DoubleEnumeration.java deleted file mode 100644 index 1fc37f8e0f8..00000000000 --- a/libjava/gnu/java/util/DoubleEnumeration.java +++ /dev/null @@ -1,138 +0,0 @@ -/* gnu.java.util.DoubleEnumeration - Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util; - -import java.util.Enumeration; -import java.util.NoSuchElementException; - - -/** - * This is a helper class that combines two Enumerations. - * It returns the elements of the first Enumeration until it has - * no more elements and then returns the elements of the second - * Enumeration.<br> - * - * In the default case: - * <pre> - * doubleEnum = new DoubleEnumeration(enum1, enum2); - * while (doubleEnum.hasMoreElements()) { - * Object o = doubleEnum.nextElement(); - * do_something(o); - * } - * </pre> - * it calls hasMoreElements of the Enumerations as few times as - * possible. - * The references to the Enumerations are cleared as soon as they have no - * more elements to help garbage collecting. - * - * @author Jochen Hoenicke - * @author Mark Wielaard (mark@klomp.org) - */ -public class DoubleEnumeration implements Enumeration -{ - /** - * This is true as long as one of the enumerations has more - * elements. - * Only valid when hasChecked is true. - * Set in <code>hasMoreElements()</code> - */ - private boolean hasMore; - /** - * This is true, if it is sure that hasMore indicates wether there are - * more elements. - * Set to true in <code>hasMoreElements()</code>. - * Set to false in <code>getNextElement()</code>. - */ - private boolean hasChecked; - /** - * The first enumeration. - */ - private Enumeration e1; - /** - * The second enumeration. - */ - private Enumeration e2; - - /** - * Creates a new Enumeration combining the given two enumerations. - * The enumerations mustn't be accessed by other classes. - */ - public DoubleEnumeration(Enumeration e1, Enumeration e2) - { - this.e1 = e1; - this.e2 = e2; - hasChecked = false; - } - - /** - * Returns true, if at least one of the two enumerations has more - * elements. - */ - public boolean hasMoreElements() - { - if (hasChecked) - return hasMore; - - hasMore = (e1 != null && e1.hasMoreElements()); - - if (!hasMore) { - e1 = e2; - e2 = null; - hasMore = (e1 != null && e1.hasMoreElements()); - } - - hasChecked = true; - return hasMore; - } - - /** - * Returns the next element. This returns the next element of the - * first enumeration, if it has more elements, otherwise the next - * element of the second enumeration. If both enumeration don't have - * any elements it throws a <code>NoSuchElementException</code>. - */ - public Object nextElement() - { - if (!hasMoreElements()) - throw new NoSuchElementException(); - else { - hasChecked = false; - return e1.nextElement(); - } - } -} diff --git a/libjava/gnu/java/util/EmptyEnumeration.java b/libjava/gnu/java/util/EmptyEnumeration.java deleted file mode 100644 index 46a82d6cb53..00000000000 --- a/libjava/gnu/java/util/EmptyEnumeration.java +++ /dev/null @@ -1,96 +0,0 @@ -/* EmptyEnumeration.java -- a constant empty enumeration - Copyright (C) 2001, 2002 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util; - -import java.io.Serializable; -import java.util.Enumeration; -import java.util.NoSuchElementException; - -/** - * This is a helper class that produces an empty Enumerations. There is only - * one instance of this class that can be used whenever one needs a - * non-null but empty enumeration. Using this class prevents multiple - * small objects and inner classes. <code>getInstance()</code> returns - * the only instance of this class. It can be shared by multiple objects and - * threads. - * - * @author Mark Wielaard (mark@klomp.org) - */ -public final class EmptyEnumeration implements Enumeration, Serializable -{ - /** The only instance of this class */ - private static final EmptyEnumeration instance = new EmptyEnumeration(); - - /** - * Private constructor that creates a new empty Enumeration. - */ - private EmptyEnumeration() - { - } - - /** - * Returns the only instance of this class. - * It can be shared by multiple objects and threads. - * - * @return the common empty enumeration - */ - public static EmptyEnumeration getInstance() - { - return instance; - } - - /** - * Returns false, since there are no elements. - * - * @return false - */ - public boolean hasMoreElements() - { - return false; - } - - /** - * Always throws <code>NoSuchElementException</code>, since it is empty. - * - * @throws NoSuchElementException this is empty - */ - public Object nextElement() - { - throw new NoSuchElementException(); - } -} diff --git a/libjava/gnu/java/util/prefs/FileBasedFactory.java b/libjava/gnu/java/util/prefs/FileBasedFactory.java deleted file mode 100644 index 70f3558fc6f..00000000000 --- a/libjava/gnu/java/util/prefs/FileBasedFactory.java +++ /dev/null @@ -1,57 +0,0 @@ -/* FileBasedFactory - Default Classpath implementation of a PreferencesFactory - Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util.prefs; - -import java.util.prefs.*; - -/** - * Default Classpath implementation of a PreferencesFactory. - * Returns system and user root Preferences nodes that are read from files. - * - * @author Mark Wielaard (mark@klomp.org) - */ -public class FileBasedFactory implements PreferencesFactory { - - public Preferences systemRoot() { - return null; - } - - public Preferences userRoot() { - return null; - } -} diff --git a/libjava/gnu/java/util/prefs/MemoryBasedFactory.java b/libjava/gnu/java/util/prefs/MemoryBasedFactory.java deleted file mode 100644 index abaf0016f5b..00000000000 --- a/libjava/gnu/java/util/prefs/MemoryBasedFactory.java +++ /dev/null @@ -1,64 +0,0 @@ -/* MemoryBasedFactory - Memory based PreferencesFactory usefull for testing - Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util.prefs; - -import java.util.prefs.*; - -/** - * Memory based PreferencesFactory usefull for testing. - * Returns completely empty Preferences for system and user roots. - * All changes are only backed by the current instances in memory. - * - * @author Mark Wielaard (mark@klomp.org) - */ -public class MemoryBasedFactory implements PreferencesFactory { - - // Static fields containing the preferences root nodes - private static final Preferences systemPreferences - = new MemoryBasedPreferences(null, "", false); - private static final Preferences userPreferences - = new MemoryBasedPreferences(null, "", true); - - public Preferences systemRoot() { - return systemPreferences; - } - - public Preferences userRoot() { - return userPreferences; - } -} diff --git a/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java b/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java deleted file mode 100644 index b2f321c9c7e..00000000000 --- a/libjava/gnu/java/util/prefs/MemoryBasedPreferences.java +++ /dev/null @@ -1,144 +0,0 @@ -/* MemoryBasedPreferences - A Preference node which holds all entries in memory - Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util.prefs; - -import java.util.HashMap; - -import java.util.prefs.*; - -/** - * A Preference node which holds all entries in memory - * - * @author Mark Wielaard (mark@klomp.org) - */ -public class MemoryBasedPreferences extends AbstractPreferences { - - /** True if this is a preference node in the user tree, false otherwise. */ - private final boolean isUser; - - /** Contains all the preference entries of this node. */ - private HashMap entries = new HashMap(); - - /** - * Creates a new preferences node with the given name and parent. - * When isUser is true it will be user node otherwise it will be a system - * node. It will always set the <code>newNode</code> field to true - * since there is no real backing store, so all nodes are new. - */ - public MemoryBasedPreferences(MemoryBasedPreferences parent, - String name, - boolean isUser) { - super(parent, name); - this.isUser = isUser; - - // Since we do not have a real backing store all nodes are new - newNode = true; - } - - /** - * Returns true if this node was created as a user node. - */ - public boolean isUserNode() { - return isUser; - } - - /** - * Returns an empty array since all children names are always already - * chached. - */ - protected String[] childrenNamesSpi() throws BackingStoreException { - return new String[0]; - } - - /** - * Returns a new node with the given name with as parent this node and - * with the <code>isUser</code> flag set to the same value as this node. - */ - protected AbstractPreferences childSpi(String childName) { - return new MemoryBasedPreferences(this, childName, isUser); - } - - /** - * Returns a (possibly empty) array of keys of the preferences entries of - * this node. - */ - protected String[] keysSpi() throws BackingStoreException { - return (String[]) entries.keySet().toArray(new String[entries.size()]); - } - - /** - * Returns the associated value from this nodes preferences entries or - * null when the key has not been set. - */ - protected String getSpi(String key) { - return (String) entries.get(key); - } - - /** - * Sets the value for the given key. - */ - protected void putSpi(String key, String value) { - entries.put(key, value); - } - - /** - * Removes the entry with the given key. - */ - protected void removeSpi(String key) { - entries.remove(key); - } - - /** - * Does nothing since we do not have any backing store. - */ - protected void flushSpi() { - } - - /** - * Does nothing since we do not have any backing store. - */ - protected void syncSpi() { - } - - /** - * Just removes the entries map of this node. - */ - protected void removeNodeSpi() { - entries = null; - } -} diff --git a/libjava/gnu/java/util/prefs/NodeReader.java b/libjava/gnu/java/util/prefs/NodeReader.java deleted file mode 100644 index 4cd52e5dbf9..00000000000 --- a/libjava/gnu/java/util/prefs/NodeReader.java +++ /dev/null @@ -1,223 +0,0 @@ -/* NodeReader - Reads and imports preferences nodes from files - Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util.prefs; - -import java.io.BufferedReader; -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.Reader; -import java.util.prefs.InvalidPreferencesFormatException; -import java.util.prefs.Preferences; -import java.util.prefs.PreferencesFactory; - -/** - * Reads and imports preferences nodes from files. - * - * @author Mark Wielaard (mark@klomp.org) - */ -public class NodeReader { - - private final BufferedReader br; - private String line = ""; - - private final PreferencesFactory factory; - - public NodeReader(Reader r, PreferencesFactory factory) { - if(r instanceof BufferedReader) { - br = (BufferedReader) r; - } else { - br = new BufferedReader(r); - } - this.factory = factory; - } - - public NodeReader(InputStream is, PreferencesFactory factory) { - this(new InputStreamReader(is), factory); - } - - public void importPreferences() - throws InvalidPreferencesFormatException, IOException - { - readPreferences(); - } - - private void readPreferences() - throws InvalidPreferencesFormatException, IOException - { - // Begin starting tag - skipTill("<preferences"); - - readRoot(); - - // Ending tag - skipTill("</preferences>"); - } - - private void readRoot() - throws InvalidPreferencesFormatException, IOException - { - // Begin starting tag - skipTill("<root"); - - // type attribute - skipTill("type=\""); - String type = readTill("\""); - Preferences root; - if ("user".equals(type)) { - root = factory.userRoot(); - } else if ("system".equals(type)) { - root = factory.systemRoot(); - } else { - throw new InvalidPreferencesFormatException("Unknown type: " - + type); - } - - // Read root map and subnodes - readMap(root); - readNodes(root); - - // Ending tag - skipTill("</root>"); - } - - private void readNodes(Preferences node) - throws InvalidPreferencesFormatException, IOException - { - while ("node".equals(nextTag())) { - skipTill("<node"); - skipTill("name=\""); - String name = readTill("\""); - Preferences subnode = node.node(name); - System.out.println("Found subnode: " + subnode.absolutePath()); - readMap(subnode); - readNodes(subnode); - skipTill("</node>"); - } - - } - - private void readMap(Preferences node) - throws InvalidPreferencesFormatException, IOException - { - // Begin map tag - skipTill("<map"); - - // Empty map? - if (line.startsWith("/>")) { - line = line.substring(2); - return; - } - - // Map entries - readEntries(node); - - // Ending tag - skipTill("</map>"); - } - - private void readEntries(Preferences node) - throws InvalidPreferencesFormatException, IOException - { - while ("entry".equals(nextTag())) { - skipTill("<entry"); - skipTill("key=\""); - String key = readTill("\""); - skipTill("value=\""); - String value = readTill("\""); - System.out.println("Key: " + key + " Value: " + value); - node.put(key, value); - } - } - - private void skipTill(String s) - throws InvalidPreferencesFormatException, IOException - { - while(true) { - if (line == null) - throw new InvalidPreferencesFormatException(s + " not found"); - - int index = line.indexOf(s); - if (index == -1) { - line = br.readLine(); - } else { - line = line.substring(index+s.length()); - return; - } - } - } - - private String readTill(String s) - throws InvalidPreferencesFormatException - { - int index = line.indexOf(s); - if (index == -1) - throw new InvalidPreferencesFormatException(s + " not found"); - - String read = line.substring(0, index); - line = line.substring(index+s.length()); - - return read; - } - - private String nextTag() - throws InvalidPreferencesFormatException, IOException - { - while(true) { - if (line == null) - throw new InvalidPreferencesFormatException("unexpected EOF"); - - int start = line.indexOf("<"); - if (start == -1) { - line = br.readLine(); - } else { - // Find end of tag - int end = start+1; - while (end != line.length() - && " \t\r\n".indexOf(line.charAt(end)) == -1) { - end++; - } - // Line now starts at the found tag - String tag = line.substring(start+1,end); - line = line.substring(start); - return tag; - } - } - } - -} diff --git a/libjava/gnu/java/util/prefs/NodeWriter.java b/libjava/gnu/java/util/prefs/NodeWriter.java deleted file mode 100644 index 1eed9e66e2d..00000000000 --- a/libjava/gnu/java/util/prefs/NodeWriter.java +++ /dev/null @@ -1,315 +0,0 @@ -/* NodeWriter - Writes and exports preferences nodes to files - Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util.prefs; - -import java.io.BufferedWriter; -import java.io.IOException; -import java.io.OutputStream; -import java.io.OutputStreamWriter; -import java.io.Writer; - -import java.util.StringTokenizer; - -import java.util.prefs.*; - -/** - * Writes and exports preferences nodes to files - * - * @author Mark Wielaard (mark@klomp.org) - */ -public class NodeWriter { - - /** The Preferences node to write. */ - private final Preferences prefs; - - /** The bufferedWriter to write the node to. */ - private final BufferedWriter bw; - - /** - * True if the complete sub tree should be written, - * false if only the node should be written. - */ - private boolean subtree; - - /** - * Creates a new NodeWriter for the given preferences node and writer. - */ - public NodeWriter(Preferences prefs, Writer w) { - this.prefs = prefs; - if (w instanceof BufferedWriter) { - this.bw = (BufferedWriter) w; - } else { - this.bw = new BufferedWriter(w); - } - } - - /** - * Creates a new NodeWriter for the given preferences node and - * outputstream. Creates a new OutputStreamWriter. - */ - public NodeWriter(Preferences prefs, OutputStream os) { - this(prefs, new OutputStreamWriter(os)); - } - - /** - * Writes the preference node plus the complete subtree. - */ - public void writePrefsTree() throws BackingStoreException, IOException { - subtree = true; - writeHeader(); - writePreferences(); - bw.flush(); - } - - /** - * Writes only the preference node. - */ - public void writePrefs() throws BackingStoreException, IOException { - subtree = false; - writeHeader(); - writePreferences(); - bw.flush(); - } - - /** - * Writes the standard header. - */ - private void writeHeader() throws BackingStoreException, IOException { - bw.write("<?xml version=\"1.0\"?>"); - bw.newLine(); - bw.newLine(); - bw.write("<!-- GNU Classpath java.util.prefs Preferences "); - - if (prefs.isUserNode()) { - bw.write("user"); - } else { - bw.write("system"); - } - - // root node? - if (prefs.parent() == null) { - bw.write(" root"); - } - - if (subtree) { - bw.write(" tree"); - } else { - bw.write(" node"); - } - - // no root? - if (prefs.parent() != null) { - bw.newLine(); - bw.write(" '"); - bw.write(prefs.absolutePath()); - bw.write('\''); - bw.newLine(); - } - bw.write(" -->"); - bw.newLine(); - bw.newLine(); - } - - /** - * Write the preferences tag and the root. - */ - private void writePreferences() throws BackingStoreException, IOException { - bw.write("<preferences>"); - bw.newLine(); - writeRoot(); - bw.write("</preferences>"); - bw.newLine(); - } - - private void writeRoot() throws BackingStoreException, IOException { - bw.write(" <root type=\""); - if (prefs.isUserNode()) { - bw.write("user"); - } else { - bw.write("system"); - } - bw.write("\"/>"); - - writeRootMap(); - writeNode(); - - bw.write(" </root>"); - bw.newLine(); - } - - private void writeRootMap() throws BackingStoreException, IOException { - // Is it a root node? - if(prefs.parent() == null && prefs.keys().length > 0) { - bw.newLine(); - writeMap(prefs, 2); - } else { - bw.write("<map/>"); - bw.newLine(); - } - } - - /** - * Writes all the parents of the preferences node without any entries. - * Returns the number of parents written, which has to be used as - * argument to <code>writeCloseParents()</code> after writing the node - * itself. - */ - private int writeParents() throws IOException { - int parents; - String path = prefs.absolutePath(); - int lastslash = path.lastIndexOf("/"); - if (lastslash > 0) { - path = path.substring(1, lastslash); - StringTokenizer st = new StringTokenizer(path); - parents = st.countTokens(); - - System.out.println("path: " + path); - System.out.println("parents: " + parents); - - for (int i=0; i<parents; i++) { - String name = st.nextToken(); - indent(i+2); - bw.write("<node name=\"" + name + "\">"); - bw.write("<map/>"); - bw.write("</node>"); - bw.newLine(); - } - } else { - parents = 0; - } - - return parents; - } - - private void writeCloseParents(int parents) throws IOException { - while(parents > 0) { - indent(parents+1); - bw.write("</node>"); - bw.newLine(); - parents--; - } - } - - private void writeNode() throws BackingStoreException, IOException { - int parents = writeParents(); - // root? - int indent; - if (prefs.parent() == null) { - indent = parents+1; - } else { - indent = parents+2; - } - writeNode(prefs, indent); - writeCloseParents(parents); - } - - private void writeNode(Preferences node, int indent) - throws BackingStoreException, IOException - { - // not root? - if (node.parent() != null) { - indent(indent); - bw.write("<node name=\"" + node.name() + "\">"); - if (node.keys().length > 0) { - bw.newLine(); - } - writeMap(node, indent+1); - } - - if (subtree) { - String[] children = node.childrenNames(); - for (int i=0; i<children.length; i++) { - Preferences child = node.node(children[i]); - writeNode(child, indent+1); - } - } - - // not root? - if (node.parent() != null) { - indent(indent); - bw.write("</node>"); - bw.newLine(); - } - } - - private void writeMap(Preferences node, int indent) - throws BackingStoreException, IOException - { - // construct String used for indentation - StringBuffer indentBuffer = new StringBuffer(2*indent); - for (int i=0; i < indent; i++) - indentBuffer.append(" "); - String indentString = indentBuffer.toString(); - - if (node.keys().length > 0) { - bw.write(indentString); - bw.write("<map>"); - bw.newLine(); - writeEntries(node, indentString + " "); - bw.write(indentString); - bw.write("</map>"); - } else { - bw.write("<map/>"); - } - bw.newLine(); - } - - private void writeEntries(Preferences node, String indent) - throws BackingStoreException, IOException - { - String[] keys = node.keys(); - for(int i = 0; i < keys.length; i++) { - String value = node.get(keys[i], null); - if (value == null) { - throw new BackingStoreException("null value for key '" - + keys[i] + "'"); - } - - bw.write(indent); - bw.write("<entry key=\"" + keys[i] + "\"" - + " value=\"" + value + "\"/>"); - bw.newLine(); - } - } - - private void indent(int x) throws IOException { - for (int i=0; i<x; i++) { - bw.write(" "); - } - } -} |
