1.1 --- a/emul/mini/src/main/java/java/util/zip/CRC32.java	Fri Mar 22 16:59:47 2013 +0100
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,132 +0,0 @@
     1.4 -/* CRC32.java - Computes CRC32 data checksum of a data stream
     1.5 -   Copyright (C) 1999. 2000, 2001 Free Software Foundation, Inc.
     1.6 -
     1.7 -This file is part of GNU Classpath.
     1.8 -
     1.9 -GNU Classpath is free software; you can redistribute it and/or modify
    1.10 -it under the terms of the GNU General Public License as published by
    1.11 -the Free Software Foundation; either version 2, or (at your option)
    1.12 -any later version.
    1.13 -
    1.14 -GNU Classpath is distributed in the hope that it will be useful, but
    1.15 -WITHOUT ANY WARRANTY; without even the implied warranty of
    1.16 -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.17 -General Public License for more details.
    1.18 -
    1.19 -You should have received a copy of the GNU General Public License
    1.20 -along with GNU Classpath; see the file COPYING.  If not, write to the
    1.21 -Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    1.22 -02111-1307 USA.
    1.23 -
    1.24 -Linking this library statically or dynamically with other modules is
    1.25 -making a combined work based on this library.  Thus, the terms and
    1.26 -conditions of the GNU General Public License cover the whole
    1.27 -combination.
    1.28 -
    1.29 -As a special exception, the copyright holders of this library give you
    1.30 -permission to link this library with independent modules to produce an
    1.31 -executable, regardless of the license terms of these independent
    1.32 -modules, and to copy and distribute the resulting executable under
    1.33 -terms of your choice, provided that you also meet, for each linked
    1.34 -independent module, the terms and conditions of the license of that
    1.35 -module.  An independent module is a module which is not derived from
    1.36 -or based on this library.  If you modify this library, you may extend
    1.37 -this exception to your version of the library, but you are not
    1.38 -obligated to do so.  If you do not wish to do so, delete this
    1.39 -exception statement from your version. */
    1.40 -
    1.41 -package java.util.zip;
    1.42 -
    1.43 -/*
    1.44 - * Written using on-line Java Platform 1.2 API Specification, as well
    1.45 - * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
    1.46 - * The actual CRC32 algorithm is taken from RFC 1952.
    1.47 - * Status:  Believed complete and correct.
    1.48 - */
    1.49 -
    1.50 -/**
    1.51 - * Computes CRC32 data checksum of a data stream.
    1.52 - * The actual CRC32 algorithm is described in RFC 1952
    1.53 - * (GZIP file format specification version 4.3).
    1.54 - * Can be used to get the CRC32 over a stream if used with checked input/output
    1.55 - * streams.
    1.56 - *
    1.57 - * @see InflaterInputStream
    1.58 - * @see DeflaterOutputStream
    1.59 - *
    1.60 - * @author Per Bothner
    1.61 - * @date April 1, 1999.
    1.62 - */
    1.63 -public class CRC32 implements Checksum
    1.64 -{
    1.65 -  /** The crc data checksum so far. */
    1.66 -  private int crc = 0;
    1.67 -
    1.68 -  /** The fast CRC table. Computed once when the CRC32 class is loaded. */
    1.69 -  private static int[] crc_table = make_crc_table();
    1.70 -
    1.71 -  /** Make the table for a fast CRC. */
    1.72 -  private static int[] make_crc_table ()
    1.73 -  {
    1.74 -    int[] crc_table = new int[256];
    1.75 -    for (int n = 0; n < 256; n++)
    1.76 -      {
    1.77 -	int c = n;
    1.78 -	for (int k = 8;  --k >= 0; )
    1.79 -	  {
    1.80 -	    if ((c & 1) != 0)
    1.81 -	      c = 0xedb88320 ^ (c >>> 1);
    1.82 -	    else
    1.83 -	      c = c >>> 1;
    1.84 -	  }
    1.85 -	crc_table[n] = c;
    1.86 -      }
    1.87 -    return crc_table;
    1.88 -  }
    1.89 -
    1.90 -  /**
    1.91 -   * Returns the CRC32 data checksum computed so far.
    1.92 -   */
    1.93 -  public long getValue ()
    1.94 -  {
    1.95 -    return (long) crc & 0xffffffffL;
    1.96 -  }
    1.97 -
    1.98 -  /**
    1.99 -   * Resets the CRC32 data checksum as if no update was ever called.
   1.100 -   */
   1.101 -  public void reset () { crc = 0; }
   1.102 -
   1.103 -  /**
   1.104 -   * Updates the checksum with the int bval. 
   1.105 -   *
   1.106 -   * @param bval (the byte is taken as the lower 8 bits of bval)
   1.107 -   */
   1.108 -
   1.109 -  public void update (int bval)
   1.110 -  {
   1.111 -    int c = ~crc;
   1.112 -    c = crc_table[(c ^ bval) & 0xff] ^ (c >>> 8);
   1.113 -    crc = ~c;
   1.114 -  }
   1.115 -
   1.116 -  /**
   1.117 -   * Adds the byte array to the data checksum.
   1.118 -   *
   1.119 -   * @param buf the buffer which contains the data
   1.120 -   * @param off the offset in the buffer where the data starts
   1.121 -   * @param len the length of the data
   1.122 -   */
   1.123 -  public void update (byte[] buf, int off, int len)
   1.124 -  {
   1.125 -    int c = ~crc;
   1.126 -    while (--len >= 0)
   1.127 -      c = crc_table[(c ^ buf[off++]) & 0xff] ^ (c >>> 8);
   1.128 -    crc = ~c;
   1.129 -  }
   1.130 -
   1.131 -  /**
   1.132 -   * Adds the complete byte array to the data checksum.
   1.133 -   */
   1.134 -  public void update (byte[] buf) { update(buf, 0, buf.length); }
   1.135 -}