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authormkoch <mkoch@138bc75d-0d04-0410-961f-82ee72b054a4>2003-04-30 07:23:42 +0000
committermkoch <mkoch@138bc75d-0d04-0410-961f-82ee72b054a4>2003-04-30 07:23:42 +0000
commitf79f9978afd0a177d1e1ef444e63f42e6d820a64 (patch)
tree89373f6e7f4c07ae0c9c6eeebf05fcb7bbcdfa36 /libjava/gnu/java/io/Base64InputStream.java
parent585fefa7d1d19ecbf1ecb8bb95c8389f75e9db22 (diff)
downloadppe42-gcc-f79f9978afd0a177d1e1ef444e63f42e6d820a64.tar.gz
ppe42-gcc-f79f9978afd0a177d1e1ef444e63f42e6d820a64.zip
2003-04-30 Michael Koch <konqueror@gmx.de>
* gnu/java/security/Engine.java, gnu/java/security/OID.java, gnu/java/security/der/BitString.java, gnu/java/security/der/DER.java, gnu/java/security/der/DERReader.java, gnu/java/security/der/DERValue.java, gnu/java/security/der/DERWriter.java, gnu/java/security/provider/DSAKeyFactory.java, gnu/java/security/provider/X509CertificateFactory.java, gnu/java/security/x509/X500DistinguishedName.java, gnu/java/security/x509/X509CRL.java, gnu/java/security/x509/X509CRLEntry.java, gnu/java/security/x509/X509Certificate.java, java/security/cert/CRLSelector.java, java/security/cert/CertPathBuilder.java, java/security/cert/CertPathBuilderResult.java, java/security/cert/CertPathBuilderSpi.java, java/security/cert/CertPathParameters.java, java/security/cert/CertPathValidator.java, java/security/cert/CertPathValidatorResult.java, java/security/cert/CertPathValidatorSpi.java, java/security/cert/CertSelector.java, java/security/cert/CertStore.java, java/security/cert/CertStoreParameters.java, java/security/cert/CertStoreSpi.java, java/security/cert/CollectionCertStoreParameters.java, java/security/cert/LDAPCertStoreParameters.java, java/security/cert/PKIXBuilderParameters.java, java/security/cert/PKIXCertPathBuilderResult.java, java/security/cert/PKIXCertPathChecker.java, java/security/cert/PKIXCertPathValidatorResult.java, java/security/cert/PKIXParameters.java, java/security/cert/PolicyNode.java, java/security/cert/PolicyQualifierInfo.java, java/security/cert/TrustAnchor.java, javax/security/auth/x500/X500Principal.java: New files from classpath. * gnu/java/io/ASN1ParsingException.java, gnu/java/io/Base64InputStream.java, gnu/java/security/der/DEREncodingException.java, gnu/java/security/provider/DSAParameters.java, gnu/java/security/provider/DSASignature.java, gnu/java/security/provider/Gnu.java, gnu/java/security/provider/GnuDSAPrivateKey.java, gnu/java/security/provider/GnuDSAPublicKey.java, java/security/AlgorithmParameterGenerator.java, java/security/AlgorithmParameters.java, java/security/KeyFactory.java, java/security/KeyPairGenerator.java, java/security/KeyStore.java, java/security/MessageDigest.java, java/security/SecureClassLoader.java, java/security/SecureRandom.java, java/security/Security.java, java/security/Signature.java, java/security/cert/Certificate.java, java/security/cert/CertificateFactory.java, java/security/cert/CertificateFactorySpi.java, java/security/cert/X509CRL.java, java/security/cert/X509Certificate.java, java/security/spec/DSAPublicKeySpec.java: New versions from classpath. * gnu/java/security/provider/DERReader.java, gnu/java/security/provider/DERWriter.java, java/security/Engine.java: Removed. * Makefile.am (java_source_files, javax_source_files): Added new files. * Makefile.in: Regenerated. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66283 138bc75d-0d04-0410-961f-82ee72b054a4
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diff --git a/libjava/gnu/java/io/Base64InputStream.java b/libjava/gnu/java/io/Base64InputStream.java
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+/* Base64InputStream.java -- base-64 input stream.
+ Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.io;
+
+import java.io.FilterInputStream;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.EOFException;
+
+/**
+ * A filter input stream that decodes data encoded in the Base-64
+ * encoding scheme.
+ *
+ * @author Casey Marshall (rsdio@metastatic.org)
+ */
+public class Base64InputStream extends FilterInputStream
+{
+
+ // Constants and fields.
+ // ------------------------------------------------------------------------
+
+ /** Base-64 digits. */
+ private static final String BASE_64 =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+ /** Base-64 padding character. */
+ private static final char BASE_64_PAD = '=';
+
+ /** Decoding state. */
+ private int state;
+
+ /** Intermediate decoded value. */
+ private int temp;
+
+ /** EOF flag. */
+ private boolean eof;
+
+ private final byte[] one = new byte[1];
+
+ // Constructors.
+ // ------------------------------------------------------------------------
+
+ /**
+ * Create a new Base-64 input stream. The input bytes must be the
+ * ASCII characters A-Z, a-z, 0-9, + and /, with optional whitespace,
+ * and will be decoded into a byte stream.
+ *
+ * @param in The source of Base-64 input.
+ */
+ public Base64InputStream(InputStream in)
+ {
+ super(in);
+ state = 0;
+ temp = 0;
+ eof = false;
+ }
+
+ // Instance methods.
+ // ------------------------------------------------------------------------
+
+ public int available()
+ {
+ return 0;
+ }
+
+ public int read() throws IOException
+ {
+ if (read(one) == 1)
+ return one[0];
+ return -1;
+ }
+
+ public int read(byte[] buf, int off, int len) throws IOException
+ {
+ if (eof)
+ return -1;
+ int count = 0;
+ while (count < len)
+ {
+ int i;
+ while (Character.isWhitespace((char) (i = in.read())));
+ int pos = BASE_64.indexOf((char) i);
+ if (pos >= 0)
+ {
+ switch (state)
+ {
+ case 0:
+ temp = pos << 2;
+ state = 1;
+ break;
+ case 1:
+ buf[count++] = (byte) (temp | (pos >>> 4));
+ temp = (pos & 0x0F) << 4;
+ state = 2;
+ break;
+ case 2:
+ buf[count++] = (byte) (temp | (pos >>> 2));
+ temp = (pos & 0x03) << 6;
+ state = 3;
+ break;
+ case 3:
+ buf[count++] = (byte) (temp | pos);
+ state = 0;
+ break;
+ }
+ }
+ else if (i == BASE_64_PAD)
+ {
+ switch (state)
+ {
+ case 0:
+ case 1:
+ throw new IOException("malformed Base-64 input");
+ case 2:
+ while (Character.isWhitespace((char) (i = in.read())));
+ if (i != BASE_64_PAD)
+ throw new IOException("malformed Base-64 input");
+ case 3:
+ while (Character.isWhitespace((char) (i = in.read())));
+ }
+ eof = true;
+ break;
+ }
+ else // First non-Base-64 character, consider it end-of-stream.
+ {
+ if (state != 0)
+ throw new IOException("malformed Base-64 input");
+ eof = true;
+ break;
+ }
+ }
+ return count;
+ }
+
+ public boolean markSupported()
+ {
+ return false;
+ }
+
+ public void mark(int markLimit) { }
+
+ public void reset() throws IOException
+ {
+ throw new IOException("reset not supported");
+ }
+
+ public long skip(long n) throws IOException
+ {
+ long skipped;
+ for (skipped = 0; skipped < n; skipped++)
+ if (read() == -1)
+ break;
+ return skipped;
+ }
+}
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