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Diffstat (limited to 'libjava/java/security/DigestOutputStream.java')
-rw-r--r-- | libjava/java/security/DigestOutputStream.java | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/libjava/java/security/DigestOutputStream.java b/libjava/java/security/DigestOutputStream.java deleted file mode 100644 index 037b39e..0000000 --- a/libjava/java/security/DigestOutputStream.java +++ /dev/null @@ -1,158 +0,0 @@ -/* DigestOutputStream.java --- An output stream tied to a message digest - Copyright (C) 1999, 2004, 2005 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 java.security; - -import java.io.FilterOutputStream; -import java.io.IOException; -import java.io.OutputStream; - -/** - * DigestOutputStream is a class that ties an OutputStream with a - * MessageDigest. The Message Digest is used by the class to update it - * self as bytes are written to the OutputStream. - * - * The updating to the digest depends on the on flag which is set to - * true by default that tells the class to update the data in the - * message digest. - * - * @version 0.0 - * @author Mark Benvenuto (ivymccough@worldnet.att.net) - */ -public class DigestOutputStream extends FilterOutputStream -{ - /** - * The message digest for the DigestOutputStream - */ - protected MessageDigest digest; - - //Manages the on flag - private boolean state = true; - - /** - * Constructs a new DigestOutputStream. It associates a - * MessageDigest with the stream to compute the stream as data is - * written. - * - * @param stream An OutputStream to associate this stream with - * @param digest A MessageDigest to hash the stream with - */ - public DigestOutputStream(OutputStream stream, MessageDigest digest) - { - super(stream); - this.digest = digest; - } - - /** - * Returns the MessageDigest associated with this DigestOutputStream - * - * @return The MessageDigest used to hash this stream - */ - public MessageDigest getMessageDigest() - { - return digest; - } - - /** - * Sets the current MessageDigest to current parameter - * - * @param digest A MessageDigest to associate with this stream - */ - public void setMessageDigest(MessageDigest digest) - { - this.digest = digest; - } - - - /** - * Updates the hash if the on flag is true and then writes a byte to - * the underlying output stream. - * - * @param b A byte to write to the output stream - * - * @exception IOException if the underlying output stream - * cannot write the byte, this is thrown. - */ - public void write(int b) throws IOException - { - if (state) - digest.update((byte) b); - - out.write(b); - } - - /** - * Updates the hash if the on flag is true and then writes the bytes - * to the underlying output stream. - * - * @param b Bytes to write to the output stream - * @param off Offset to start to start at in array - * @param len Length of data to write - * - * @exception IOException if the underlying output stream - * cannot write the bytes, this is thrown. - */ - public void write(byte[]b, int off, int len) throws IOException - { - if (state) - digest.update(b, off, len); - - out.write(b, off, len); - } - - /** - * Sets the flag specifying if this DigestOutputStream updates the - * digest in the write() methods. The default is on; - * - * @param on True means it digests stream, false means it does not - */ - public void on(boolean on) - { - state = on; - } - - /** - * Converts the output stream and underlying message digest to a string. - * - * @return A string representing the output stream and message digest. - */ - public String toString() - { - return "[Digest Output Stream] " + digest.toString(); - } -} |