mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-12-12 05:13:50 +08:00
2ba5f77454
* All files: Updated copyright information. * COPYING: New file. * COPYING.LIB: Removed. * LIBGCJ_LICENSE: We now use GPL + special exception. From-SVN: r32387
105 lines
2.3 KiB
Java
105 lines
2.3 KiB
Java
// CollationKey.java - Sort key for locale-sensitive String.
|
|
|
|
/* Copyright (C) 1999 Free Software Foundation
|
|
|
|
This file is part of libgcj.
|
|
|
|
This software is copyrighted work licensed under the terms of the
|
|
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
|
details. */
|
|
|
|
package java.text;
|
|
|
|
/**
|
|
* @author Tom Tromey <tromey@cygnus.com>
|
|
* @date March 25, 1999
|
|
*/
|
|
/* Written using "Java Class Libraries", 2nd edition, plus online
|
|
* API docs for JDK 1.2 from http://www.javasoft.com.
|
|
* Status: Believed complete and correct.
|
|
*/
|
|
|
|
public final class CollationKey
|
|
{
|
|
public int compareTo (CollationKey target)
|
|
{
|
|
int max = Math.min(key.length, target.key.length);
|
|
|
|
for (int i = 0; i < max; ++i)
|
|
{
|
|
if (key[i] != target.key[i])
|
|
return key[i] - target.key[i];
|
|
}
|
|
|
|
return key.length - target.key.length;
|
|
}
|
|
|
|
public boolean equals (Object obj)
|
|
{
|
|
if (! (obj instanceof CollationKey))
|
|
return false;
|
|
|
|
CollationKey ck = (CollationKey) obj;
|
|
|
|
if (key.length != ck.key.length)
|
|
return false;
|
|
|
|
for (int i = 0; i < key.length; ++i)
|
|
if (key[i] != ck.key[i])
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
public String getSourceString ()
|
|
{
|
|
return originalText;
|
|
}
|
|
|
|
public int hashCode ()
|
|
{
|
|
// We just follow BitSet instead of thinking up something new.
|
|
long h = originalText.hashCode();
|
|
for (int i = key.length - 1; i >= 0; --i)
|
|
h ^= key[i] * (i + 1);
|
|
return (int) ((h >> 32) ^ h);
|
|
}
|
|
|
|
public byte[] toByteArray ()
|
|
{
|
|
byte[] r = new byte[4 * key.length];
|
|
int off = 0;
|
|
for (int i = 0; i < key.length; ++i)
|
|
{
|
|
r[off++] = (byte) ((key[i] >>> 24) & 255);
|
|
r[off++] = (byte) ((key[i] >>> 16) & 255);
|
|
r[off++] = (byte) ((key[i] >>> 8) & 255);
|
|
r[off++] = (byte) ((key[i] ) & 255);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
CollationKey (CollationElementIterator iter, String originalText,
|
|
int strength)
|
|
{
|
|
this.originalText = originalText;
|
|
|
|
// Compute size of required array.
|
|
int size = 0;
|
|
while (RuleBasedCollator.next(iter, strength)
|
|
!= CollationElementIterator.NULLORDER)
|
|
++size;
|
|
|
|
iter.reset();
|
|
key = new int[size];
|
|
for (int i = 0; i < size; i++)
|
|
key[i] = RuleBasedCollator.next(iter, strength);
|
|
}
|
|
|
|
// Original string.
|
|
private String originalText;
|
|
|
|
// Collation key.
|
|
private int[] key;
|
|
}
|