+++ /dev/null
-/* InflaterInputStream.java - Input stream filter for decompressing
- 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.FilterInputStream;
-import java.io.InputStream;
-import java.io.IOException;
-
-/**
- * @author Tom Tromey
- * @date May 17, 1999
- */
-
-/* Written using on-line Java Platform 1.2 API Specification
- * and JCL book.
- * Believed complete and correct.
- */
-
-public class InflaterInputStream extends FilterInputStream
-{
- protected void fill () throws IOException
- {
- len = in.read(buf, 0, buf.length);
- if (len != -1)
- inf.setInput(buf, 0, len);
- }
-
- public InflaterInputStream (InputStream in)
- {
- this (in, new Inflater (), 512);
- }
-
- public InflaterInputStream (InputStream in, Inflater infl)
- {
- this (in, infl, 512);
- }
-
- public InflaterInputStream (InputStream in, Inflater infl, int bufsize)
- {
- super (in);
- this.inf = infl;
- this.buf = new byte[bufsize];
- }
-
- public int read () throws IOException
- {
- byte[] buf = new byte[1];
- int r = read (buf, 0, 1);
- if (r != -1)
- r = buf[0] & 0xff;
- return r;
- }
-
- public int read (byte[] buf, int off, int len) throws IOException
- {
- if (inf == null)
- throw new IOException ("stream closed");
- if (inf.finished())
- return -1;
- if (inf.needsInput())
- fill ();
- int count;
- try
- {
- count = inf.inflate(buf, off, len);
- if (count == 0)
- {
- if (this.len == -1)
- return -1; // Couldn't get any more data to feed to the Inflater
- if (inf.needsDictionary())
- throw new ZipException ("Inflater needs Dictionary");
- }
- }
- catch (DataFormatException dfe)
- {
- throw new ZipException (dfe.getMessage());
- }
- return count;
- }
-
- public void close () throws IOException
- {
- inf = null;
- super.close ();
- }
-
- public int available () throws IOException
- {
- // According to the JDK 1.2 docs, this should only ever return 0
- // or 1 and should not be relied upon by Java programs.
- if (inf == null)
- throw new IOException ("stream closed");
- return inf.finished () ? 0 : 1;
- }
-
- public long skip (long n) throws IOException
- {
- if (inf == null)
- throw new IOException ("stream closed");
-
- if (n == 0)
- return 0;
-
- int min = (int) Math.min(n, 1024);
- byte[] buf = new byte[min];
-
- long s = 0;
- while (n > 0)
- {
- int r = read (buf, 0, min);
- if (r == -1)
- break;
- n -= r;
- s += r;
- min = (int) Math.min(n, 1024);
- }
-
- return s;
- }
-
- // Buffer for delivering uncompressed data to inflater.
- protected byte[] buf;
-
- // Inflater used to decompress data.
- protected Inflater inf;
-
- // Number of read bytes in buf.
- protected int len;
-}