131 lines
3.0 KiB
Java
131 lines
3.0 KiB
Java
// Collator.java - Locale-sensitive string comparison.
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/* Copyright (C) 1999 Cygnus Solutions
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.text;
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import java.io.Serializable;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date March 18, 1999
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*/
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/* Written using "Java Class Libraries", 2nd edition, plus online
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* API docs for JDK 1.2 from http://www.javasoft.com.
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* Status: Mostly complete, but parts stubbed out. Look for FIXME.
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*/
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public abstract class Collator implements Cloneable, Serializable
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{
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public static final int NO_DECOMPOSITION = 0;
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public static final int CANONCIAL_DECOMPOSITION = 1;
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public static final int FULL_DECOMPOSITION = 2;
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public static final int PRIMARY = 0;
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public static final int SECONDARY = 1;
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public static final int TERTIARY = 2;
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public static final int IDENTICAL = 3;
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protected Collator ()
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{
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strength = TERTIARY;
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decmp = CANONCIAL_DECOMPOSITION;
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}
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public abstract int compare (String source, String target);
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public boolean equals (Object obj)
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{
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if (! (obj instanceof Collator))
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return false;
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Collator c = (Collator) obj;
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return decmp == c.decmp && strength == c.strength;
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}
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public boolean equals (String source, String target)
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{
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return compare (source, target) == 0;
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}
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public static synchronized Locale[] getAvailableLocales ()
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{
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// FIXME.
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return null;
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}
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public abstract CollationKey getCollationKey (String source);
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public synchronized int getDecomposition ()
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{
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return decmp;
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}
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public static Collator getInstance ()
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{
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return getInstance (Locale.getDefault());
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}
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public static Collator getInstance (Locale loc)
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{
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ResourceBundle res;
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String pattern;
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try
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{
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res = ResourceBundle.getBundle("gnu.gcj.text.LocaleData", loc);
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pattern = res.getString("collatorRule");
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}
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catch (MissingResourceException x)
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{
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return null;
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}
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try
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{
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return new RuleBasedCollator (pattern);
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}
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catch (ParseException x)
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{
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return null;
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}
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}
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public synchronized int getStrength ()
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{
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return strength;
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}
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public abstract int hashCode ();
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public synchronized void setDecomposition (int mode)
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{
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if (mode != NO_DECOMPOSITION
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&& mode != CANONCIAL_DECOMPOSITION
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&& mode != FULL_DECOMPOSITION)
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throw new IllegalArgumentException ();
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decmp = mode;
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}
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public synchronized void setStrength (int strength)
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{
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if (strength != PRIMARY && strength != SECONDARY
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&& strength != TERTIARY && strength != IDENTICAL)
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throw new IllegalArgumentException ();
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this.strength = strength;
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}
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// Decompose a single character and append results to the buffer.
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protected native final void decomposeCharacter (char c, StringBuffer buf);
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// These names are fixed by the serialization spec.
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protected int decmp;
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protected int strength;
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}
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