including jazzlib into classpath tree

1 files changed, 393 insertions, 0 deletions

diff --git a/java/util/zip/ZipOutputStream.java b/java/util/zip/ZipOutputStream.java
new file mode 100644
index 000000000..816c6f607
--- /dev/null
+++ b/java/util/zip/ZipOutputStream.java
@@ -0,0 +1,393 @@
+/* java.util.zip.ZipOutputStream
+   Copyright (C) 2001 Free Software Foundation, Inc.
+
+This file is part of Jazzlib.
+
+Jazzlib 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.
+
+Jazzlib 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.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.util.zip;
+import java.io.OutputStream;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.util.Vector;
+import java.util.Enumeration;
+
+/**
+ * This is a FilterOutputStream that writes the files into a zip
+ * archive one after another.  It has a special method to start a new
+ * zip entry.  The zip entries contains information about the file name
+ * size, compressed size, CRC, etc.
+ *
+ * It includes support for STORED and DEFLATED entries.
+ *
+ * This class is not thread safe.
+ *
+ * @author Jochen Hoenicke 
+ */
+public class ZipOutputStream extends DeflaterOutputStream implements ZipConstants
+{
+  private Vector entries = new Vector();
+  private CRC32 crc = new CRC32();
+  private ZipEntry curEntry = null;
+
+  private int curMethod;
+  private int size;
+  private int offset = 0;
+
+  private byte[] zipComment = new byte[0];
+  private int defaultMethod = DEFLATED;
+
+  /**
+   * Our Zip version is hard coded to 1.0 resp. 2.0
+   */
+  private final static int ZIP_STORED_VERSION   = 10;
+  private final static int ZIP_DEFLATED_VERSION = 20;
+
+  /**
+   * Compression method.  This method doesn't compress at all.
+   */
+  public final static int STORED      =  0;
+  /**
+   * Compression method.  This method uses the Deflater.
+   */
+  public final static int DEFLATED    =  8;
+
+  /**
+   * Creates a new Zip output stream, writing a zip archive.
+   * @param out the output stream to which the zip archive is written.
+   */
+  public ZipOutputStream(OutputStream out)
+  {
+    super(out, new Deflater(Deflater.DEFAULT_COMPRESSION, true));
+  }
+
+  /**
+   * Set the zip file comment.
+   * @param comment the comment.
+   * @exception IllegalArgumentException if UTF8 encoding of comment is
+   * longer than 0xffff bytes.
+   */
+  public void setComment(String comment)
+  {
+    byte[] commentBytes;
+    try
+      {
+	commentBytes = comment.getBytes("UTF8");
+      }
+    catch (UnsupportedEncodingException ex)
+      {
+	throw new InternalError("UTF8 encoding not found");
+      }
+    if (commentBytes.length > 0xffff)
+      throw new IllegalArgumentException("Comment too long.");
+    zipComment = commentBytes;
+  }
+  
+  /**
+   * Sets default compression method.  If the Zip entry specifies
+   * another method its method takes precedence.
+   * @param method the method.
+   * @exception IllegalArgumentException if method is not supported.
+   * @see #STORED
+   * @see #DEFLATED
+   */
+  public void setMethod(int method)
+  {
+    if (method != STORED && method != DEFLATED)
+      throw new IllegalArgumentException("Method not supported.");
+    defaultMethod = method;
+  }
+
+  /**
+   * Sets default compression level.  The new level will be activated
+   * immediately.  
+   * @exception IllegalArgumentException if level is not supported.
+   * @see Deflater
+   */
+  public void setLevel(int level)
+  {
+    def.setLevel(level);
+  }
+  
+  /**
+   * Write an unsigned short in little endian byte order.
+   */
+  private final void writeLeShort(int value) throws IOException 
+  {
+    out.write(value & 0xff);
+    out.write((value >> 8) & 0xff);
+  }
+
+  /**
+   * Write an int in little endian byte order.
+   */
+  private final void writeLeInt(int value) throws IOException 
+  {
+    writeLeShort(value);
+    writeLeShort(value >> 16);
+  }
+
+  /**
+   * Starts a new Zip entry. It automatically closes the previous
+   * entry if present.  If the compression method is stored, the entry
+   * must have a valid size and crc, otherwise all elements (except
+   * name) are optional, but must be correct if present.  If the time
+   * is not set in the entry, the current time is used.
+   * @param entry the entry.
+   * @exception IOException if an I/O error occured.
+   * @exception IllegalStateException if stream was finished
+   */
+  public void putNextEntry(ZipEntry entry) throws IOException
+  {
+    if (entries == null)
+      throw new IllegalStateException("ZipOutputStream was finished");
+
+    int method = entry.getMethod();
+    int flags = 0;
+    if (method == -1)
+      method = defaultMethod;
+
+    if (method == STORED)
+      {
+	if (entry.getCompressedSize() >= 0)
+	  {
+	    if (entry.getSize() < 0)
+	      entry.setSize(entry.getCompressedSize());
+	    else if (entry.getSize() != entry.getCompressedSize())
+	      throw new ZipException
+		("Method STORED, but compressed size != size");
+	  }
+	else
+	  entry.setCompressedSize(entry.getSize());
+
+	if (entry.getSize() < 0)
+	  throw new ZipException("Method STORED, but size not set");
+	if (entry.getCrc() < 0)
+	  throw new ZipException("Method STORED, but crc not set");
+      }
+    else if (method == DEFLATED)
+      {
+	if (entry.getCompressedSize() < 0
+	    || entry.getSize() < 0 || entry.getCrc() < 0)
+	  flags |= 8;
+      }
+
+    if (curEntry != null)
+      closeEntry();
+
+    if (entry.getTime() < 0)
+      entry.setTime(System.currentTimeMillis());
+
+    entry.flags = flags;
+    entry.offset = offset;
+    entry.setMethod(method);
+    curMethod = method;
+    /* Write the local file header */
+    writeLeInt(L_HDR_SIG);
+    writeLeShort(method == STORED
+		 ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION);
+    writeLeShort(flags);
+    writeLeShort(method);
+    writeLeInt(entry.getDOSTime());
+    if ((flags & 8) == 0)
+      {
+	writeLeInt((int)entry.getCrc());
+	writeLeInt((int)entry.getCompressedSize());
+	writeLeInt((int)entry.getSize());
+      }
+    else
+      {
+	writeLeInt(0);
+	writeLeInt(0);
+	writeLeInt(0);
+      }
+    byte[] name = entry.getName().getBytes("UTF8");
+    if (name.length > 0xffff)
+      throw new ZipException("Name too long.");
+    byte[] extra = entry.getExtra();
+    if (extra == null)
+      extra = new byte[0];
+    writeLeShort(name.length);
+    writeLeShort(extra.length);
+    out.write(name);
+    out.write(extra);
+
+    offset += L_SIZE + name.length + extra.length;
+
+    /* Activate the entry. */
+
+    curEntry = entry;
+    crc.reset();
+    if (method == DEFLATED)
+      def.reset();
+    size = 0;
+  }
+
+  /**
+   * Closes the current entry.
+   * @exception IOException if an I/O error occured.
+   * @exception IllegalStateException if no entry is active.
+   */
+  public void closeEntry() throws IOException
+  {
+    if (curEntry == null)
+      throw new IllegalStateException("No open entry");
+
+    /* First finish the deflater, if appropriate */
+    if (curMethod == DEFLATED)
+      super.finish();
+
+    int csize = curMethod == DEFLATED ? def.getTotalOut() : size;
+
+    if (curEntry.getSize() < 0)
+      curEntry.setSize(size);
+    else if (curEntry.getSize() != size)
+      throw new ZipException("size was "+size
+			     +", but I expected "+curEntry.getSize());
+
+    if (curEntry.getCompressedSize() < 0)
+      curEntry.setCompressedSize(csize);
+    else if (curEntry.getCompressedSize() != csize)
+      throw new ZipException("compressed size was "+csize
+			     +", but I expected "+curEntry.getSize());
+
+    if (curEntry.getCrc() < 0)
+      curEntry.setCrc(crc.getValue());
+    else if (curEntry.getCrc() != crc.getValue())
+      throw new ZipException("crc was " + Long.toHexString(crc.getValue())
+			     + ", but I expected " 
+			     + Long.toHexString(curEntry.getCrc()));
+
+    offset += csize;
+
+    /* Now write the data descriptor entry if needed. */
+    if (curMethod == DEFLATED && (curEntry.flags & 8) != 0)
+      {
+	writeLeInt(D_HDR_SIG);
+	writeLeInt((int)curEntry.getCrc());
+	writeLeInt((int)curEntry.getCompressedSize());
+	writeLeInt((int)curEntry.getSize());
+	offset += D_SIZE;
+      }
+
+    entries.addElement(curEntry);
+    curEntry = null;
+  }
+
+  /**
+   * Writes the given buffer to the current entry.
+   * @exception IOException if an I/O error occured.
+   * @exception IllegalStateException if no entry is active.
+   */
+  public void write(byte[] b, int off, int len) throws IOException
+  {
+    if (curEntry == null)
+      throw new IllegalStateException("No open entry.");
+
+    switch (curMethod)
+      {
+      case DEFLATED:
+	super.write(b, off, len);
+	break;
+	
+      case STORED:
+	out.write(b, off, len);
+	break;
+      }
+
+    crc.update(b, off, len);
+    size += len;
+  }
+
+  /**
+   * Finishes the stream.  This will write the central directory at the
+   * end of the zip file and flush the stream.
+   * @exception IOException if an I/O error occured.
+   */
+  public void finish() throws IOException
+  {
+    if (entries == null)
+      return;
+    if (curEntry != null)
+      closeEntry();
+
+    int numEntries = 0;
+    int sizeEntries = 0;
+    
+    Enumeration enum = entries.elements();
+    while (enum.hasMoreElements())
+      {
+	ZipEntry entry = (ZipEntry) enum.nextElement();
+	
+	int method = entry.getMethod();
+	writeLeInt(C_HDR_SIG);
+	writeLeShort(method == STORED
+		     ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION);
+	writeLeShort(method == STORED
+		     ? ZIP_STORED_VERSION : ZIP_DEFLATED_VERSION);
+	writeLeShort(entry.flags);
+	writeLeShort(method);
+	writeLeInt(entry.getDOSTime());
+	writeLeInt((int)entry.getCrc());
+	writeLeInt((int)entry.getCompressedSize());
+	writeLeInt((int)entry.getSize());
+
+	byte[] name = entry.getName().getBytes("UTF8");
+	if (name.length > 0xffff)
+	  throw new ZipException("Name too long.");
+	byte[] extra = entry.getExtra();
+	if (extra == null)
+	  extra = new byte[0];
+	String strComment = entry.getComment();
+	byte[] comment = strComment != null
+	  ? strComment.getBytes("UTF8") : new byte[0];
+	if (comment.length > 0xffff)
+	  throw new ZipException("Comment too long.");
+
+	writeLeShort(name.length);
+	writeLeShort(extra.length);
+	writeLeShort(comment.length);
+	writeLeShort(0); /* disk number */
+	writeLeShort(0); /* internal file attr */
+	writeLeInt(0);   /* external file attr */
+	writeLeInt(entry.offset);
+
+	out.write(name);
+	out.write(extra);
+	out.write(comment);
+	numEntries++;
+	sizeEntries += C_SIZE + name.length + extra.length + comment.length;
+      }
+
+    writeLeInt(EC_HDR_SIG);
+    writeLeShort(0); /* disk number */
+    writeLeShort(0); /* disk with start of central dir */
+    writeLeShort(numEntries);
+    writeLeShort(numEntries);
+    writeLeInt(sizeEntries);
+    writeLeInt(offset);
+    writeLeShort(zipComment.length);
+    out.write(zipComment);
+    out.flush();
+    entries = null;
+  }
+}