+++ /dev/null
-/* ZipFile.java - Read contents of a ZIP file
- Copyright (C) 1999, 2000 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 java.util.zip;
-
-import java.io.*;
-
-/* Written using on-line Java Platform 1.2 API Specification
- * and JCL book.
- * Believed complete and correct.
- */
-
-public class ZipFile implements ZipConstants
-{
- public static final int OPEN_READ = 1;
- public static final int OPEN_DELETE = 4;
-
- public ZipFile (String fname) throws IOException
- {
- this(new File(fname));
- }
-
- public ZipFile (File f) throws IOException
- {
- this(f, OPEN_READ);
- }
-
- public ZipFile (File f, int mode) throws IOException
- {
- if (mode != OPEN_READ && mode != (OPEN_READ | OPEN_DELETE))
- throw new IllegalArgumentException
- ("mode can only be OPEN_READ or OPEN_READ | OPEN_DELETE");
-
- if ((mode & OPEN_DELETE) != 0)
- {
- delete_on_close = f;
- f.deleteOnExit();
- }
- else
- {
- delete_on_close = null;
- }
-
- file = new RandomAccessFile(f, "r");
- name = f.getName();
- readDirectory ();
- }
-
- void readDirectory () throws IOException
- {
- long size = file.length ();
- if (size < ZipConstants.END_CENTRAL_DIR_SIZE)
- throw new ZipException ("zipfile too short");
- // We do not handle a "zipfile comment", which the appnote says can
- // be at the end of a .zip file. We could handle this by seeking
- // to the beginning and reading forwards.
- file.seek(size - ZipConstants.END_CENTRAL_DIR_SIZE);
- if (file.read() != 'P'
- || file.read() != 'K'
- || file.read() != '\005'
- || file.read() != '\006')
- throw new ZipException("not a valid zipfile");
- file.skipBytes(6);
- numEntries = readu2();
- int dir_size = read4 (); // Read "size of the central directory".
- file.seek(size - (dir_size + ZipConstants.END_CENTRAL_DIR_SIZE));
-
- ZipEntry last = null;
- for (int i = 0; i < numEntries; i++)
- {
- file.skipBytes(10);
- int method = readu2();
- int modtime = readu2();
- int moddate = readu2();
- int crc = read4();
- int compressedSize = read4();
- int uncompressedSize = read4();
- int filenameLength = readu2();
- int extraLength = readu2();
- int commentLength = readu2();
- int diskNumberStart = readu2();
- int intAttributes = readu2();
- int extAttributes = read4();
- int relativeOffset = read4();
- byte[] bname = new byte[filenameLength];
- file.readFully(bname);
- ZipEntry entry = new ZipEntry(new String(bname, "8859_1"));
- if (extraLength > 0)
- {
- byte[] bextra = new byte[extraLength];
- file.readFully(bextra);
- entry.extra = bextra;
- }
- if (commentLength > 0)
- {
- byte[] bcomment = new byte[commentLength];
- file.readFully(bcomment);
- entry.comment = new String(bcomment, "8859_1");
- }
- entry.compressedSize = compressedSize;
- entry.size = uncompressedSize;
- entry.crc = (long) crc & 0xffffffffL;
- entry.method = method;
- entry.relativeOffset = relativeOffset;
- entry.time = ZipEntry.timeFromDOS(moddate, modtime);
- if (last == null)
- entries = entry;
- else
- last.next = entry;
- last = entry;
- }
- }
-
- public java.util.Enumeration entries()
- {
- return new ZipEnumeration(this);
- }
-
- public void close() throws IOException
- {
- file.close();
- entries = null;
- numEntries = 0;
- if (delete_on_close != null)
- delete_on_close.delete();
- }
-
- public ZipEntry getEntry(String name)
- {
- for (ZipEntry entry = entries; entry != null; entry = entry.next)
- {
- if (name.equals(entry.getName()))
- return entry;
- }
- return null;
- }
-
- public InputStream getInputStream(ZipEntry ze) throws IOException
- {
- byte[] buffer = new byte[(int) ze.getCompressedSize()];
-
- /* Read the size of the extra field, and skip to the start of the
- data. */
- file.seek (ze.relativeOffset + ZipConstants.LOCAL_FILE_HEADER_SIZE - 2);
- int extraFieldLength = readu2();
- file.skipBytes (ze.getName().length() + extraFieldLength);
-
- file.readFully(buffer);
-
- InputStream is = new ByteArrayInputStream (buffer);
- if (ze.getMethod() == ZipEntry.DEFLATED)
- // Data in zipfile entries does not have a zlib header, so construct
- // an Inflater with the `nowrapper' option.
- is = new InflaterInputStream (is, new Inflater (true), 512);
- return is;
- }
-
- public String getName ()
- {
- return name;
- }
-
- /**
- * Returns the number of entries in this ZipFile.
- * @exception IllegalStateException if the ZipFile has been closed.
- *
- * @since 1.2
- */
- public int size ()
- {
- if (entries == null)
- throw new IllegalStateException("ZipFile already closed");
- else
- return numEntries;
- }
-
- protected void finalize () throws IOException
- {
- close();
- }
-
- private int readu2 () throws IOException
- {
- int byte0 = file.read();
- int byte1 = file.read();
- if (byte0 < 0 || byte1 < 0)
- throw new ZipException (".zip archive ended prematurely");
- return ((byte1 & 0xFF) << 8) | (byte0 & 0xFF);
- }
-
- private int read4 () throws IOException
- {
- int byte0 = file.read();
- int byte1 = file.read();
- int byte2 = file.read();
- int byte3 = file.read();
- if (byte3 < 0)
- throw new ZipException (".zip archive ended prematurely");
- return ((byte3 & 0xFF) << 24) + ((byte2 & 0xFF) << 16)
- + ((byte1 & 0xFF) << 8) + (byte0 & 0xFF);
- }
-
- ZipEntry entries;
- int numEntries;
- RandomAccessFile file;
- String name;
- /** File to delete on close or null. */
- File delete_on_close;
-
-}
-
-final class ZipEnumeration implements java.util.Enumeration
-{
- ZipEntry entry;
-
- ZipEnumeration (ZipFile zfile)
- {
- entry = zfile.entries;
- }
-
- public boolean hasMoreElements ()
- {
- return entry != null;
- }
-
- public Object nextElement ()
- {
- ZipEntry cur = entry;
- if (cur == null)
- throw new java.util.NoSuchElementException();
- entry = cur.next;
- return cur;
- }
-}
projects / msp430-gcc.git / blobdiff