From d8e2108797f88fdfc097a9336b6e6143e94b48d7 Mon Sep 17 00:00:00 2001
From: mdb <mdb@6335cc39-0255-0410-8fd6-9bcaacd3b74c>
Date: Wed, 4 Jan 2006 00:42:33 +0000
Subject: [PATCH] Nevermind, looks like java.util.zip has a CRC32 class that
 does things natively even.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1751 6335cc39-0255-0410-8fd6-9bcaacd3b74c
---
 .../src/java/com/samskivert/util/CRC32.java   | 141 ------------------
 1 file changed, 141 deletions(-)
 delete mode 100644 projects/samskivert/src/java/com/samskivert/util/CRC32.java

diff --git a/projects/samskivert/src/java/com/samskivert/util/CRC32.java b/projects/samskivert/src/java/com/samskivert/util/CRC32.java
deleted file mode 100644
index 2f6d31db..00000000
--- a/projects/samskivert/src/java/com/samskivert/util/CRC32.java
+++ /dev/null
@@ -1,141 +0,0 @@
-//
-// $Id$
-//
-// samskivert library - useful routines for java programs
-// Copyright (C) 2006 Michael Bayne
-//
-// This library is free software; you can redistribute it and/or modify it
-// under the terms of the GNU Lesser General Public License as published
-// by the Free Software Foundation; either version 2.1 of the License, or
-// (at your option) any later version.
-//
-// This library 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
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-package com.samskivert.util;
-
-import java.math.*;
-
-/**
- * <p> Calculates the CRC32 - 32 bit Cyclical Redundancy Check. This check is
- * used in numerous systems to verify the integrity of information.  It's also
- * used as a hashing function.  Unlike a regular checksum, it's sensitive to
- * the order of the characters.  It produces a 32 bit Java <code>int</code>.
- *
- * <p> This Java programme was translated from a C version I had written.  This
- * software is in the public domain.
- *
- * <p> When calculating the CRC32 over a number of strings or byte arrays the
- * previously calculated CRC is passed to the next call.  In this way the CRC
- * is built up over a number of items, including a mix of strings and byte
- * arrays.
- *
- * <pre>
- * int crcCalc = CRC32.crc32("Hello World");
- * crcCalc = CRC32.crc32("How are you?", crcCalc);
- * crcCalc = CRC32.crc32("I'm feeling really good, how about you?", crcCalc);
- * </pre>
- *
- * <p> The line <code>int crcCalc = CRC32.crc32("Hello World");</code> is
- * equivalent to <code>int crcCalc = CRC32.crc32("Hello World", -1);</code>.
- * When starting a new CRC calculation the "previous crc" is set to 0xFFFFFFFF
- * (or -1).
- *
- * @author Michael Lecuyer (mjl@theorem.com)
- * @author Michael Bayne (slight modifications)
- */
-public class CRC32
-{
-    /**
-     * Convenience mithod for generating a CRC from a single
-     * <code>String</code>.
-     *
-     * @param buffer string to generate the CRC32.
-     * @return 32 bit CRC.
-     */
-    public static int crc32 (String buffer)
-    {
-        return crc32(buffer, 0xFFFFFFFF);
-    }
-
-    /**
-     * Convenience method for generating a CRC from a <code>byte</code> array.
-     *
-     * @param buffer byte array to generate the CRC32.
-     * @return 32 bit CRC.
-     */
-    public static int crc32 (byte buffer[])
-    {
-        return crc32(buffer, 0xFFFFFFFF);
-    }
-
-    /**
-     * Convenience method for generating a CRC from a series of
-     * <code>String</code>'s.
-     *
-     * @param buffer string to generate the CRC32.
-     * @param crc previously generated CRC32.
-     * @return 32 bit CRC.
-     */
-    public static int crc32 (String buffer, int crc)
-    {
-        return crc32(buffer.getBytes(), crc);
-    }
-
-    /**
-     * Convenience method for generating a CRC from a series of
-     * <code>byte</code> arrays.
-     *
-     * @param buffer byte array to generate the CRC32
-     * @param crc previously generated CRC32.
-     * @return 32 bit CRC.
-     */
-    public static int crc32 (byte buffer[], int crc)
-    {
-        return crc32(buffer, 0, buffer.length, crc);
-    }
-
-    /**
-     * General CRC generation function.
-     *
-     * @param buffer byte array to generate the CRC32.
-     * @param start byte start position.
-     * @param count number of byte's to include in CRC calculation.
-     * @param lastcrc previously generated CRC32.
-     * @return 32 bit CRC
-     */
-    public static int crc32 (byte buffer[], int start, int count, int lastcrc)
-    {
-        int crc = lastcrc;
-        for (int ii = start; count-- != 0; ii++) {
-            int temp1 = crc >>> 8;
-            int temp2 = _crcTable[(crc ^ buffer[ii]) & 0xFF];
-            crc = temp1 ^ temp2;
-        }
-        return crc;
-    }
-
-    protected static int[] _crcTable = new int[256];
-    protected static final int CRC32_POLYNOMIAL = 0xEDB88320;
-
-    static {
-        int crc;
-        for (int ii = 0; ii <= 255; ii++) {
-            crc = ii;
-            for (int jj = 8; jj > 0; jj--) {
-                if ((crc & 1) == 1) {
-                    crc = (crc >>> 1) ^ CRC32_POLYNOMIAL;
-                } else {
-                    crc >>>= 1;
-                }
-            }
-            _crcTable[ii] = crc;
-        }
-    }
-}