From ba9e40e5800ecb4fd2f2d5d93502be2d819b8d73 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Wed, 5 Sep 2001 00:00:19 +0000
Subject: 	* java/text/SimpleDateFormat.java 
 (SimpleDateFormat(String,DateFormatSymbols)): Call 	computeCenturyStart().
 	* gnu/java/locale/LocaleInformation_de.java (word_breaks, 
 sentence_breaks, line_breaks): Removed. 	(collation_rules): Use `k,K',
 not `j,K'.  Don't using leading 	`-'.  Use `0<1', not `0,1'.  Use
 `9<A', not `9A'. 	* gnu/java/locale/LocaleInformation_nl.java: Likewise.
 	* gnu/java/locale/LocaleInformation_en.java: Likewise. 	*
 java/text/DateFormatSymbols.java: Merged with libgcj. 	*
 java/text/StringCharacterIterator.java: Reindented and merged 	with libgcj. 
 (StringCharacterIterator(String,int,int,int)): Simplified. 	(current):
 Likewise. 	(next): Likewise. 	(previous): Likewise. 	(last):
 Likewise. 	(equals): Likewise. 	(setText): Now public.  Also sets all
 fields. 	* java/text/RuleBasedCollator.java (clone): Rewrote. 	*
 java/text/Collator.java: Mostly merged with libgcj. 	*
 java/text/MessageFormat.java: Merged with libgcj. 	*
 java/text/FieldPosition.java: Reindented.  Merged with libgcj. 	*
 java/text/ParsePosition.java: Reindented.  Merged with libgcj. 	*
 java/text/Format.java: Reindented.  Merged with libgcj. 	(parseObject):
 Doesn't throw exception on error. 	* java/text/CharacterIterator.java:
 Reindented. 	* java/text/ChoiceFormat.java: Merged with libgcj. 	*
 gnu/java/text/Makefile.am: New file. 	* gnu/java/Makefile.am (SUBDIRS):
 Added text. 	* configure.in (AC_OUTPUT): Added gnu/java/text/Makefile. 
 * gnu/java/text/BaseBreakIterator.java: New file from libgcj. 	*
 gnu/java/text/CharacterBreakIterator.java: Likewise. 	*
 gnu/java/text/LineBreakIterator.java: Likewise. 	*
 gnu/java/text/SentenceBreakIterator.java: Likewise. 	*
 gnu/java/text/WordBreakIterator.java: Likewise. 	*
 java/text/BreakIterator.java: Merged with libgcj. 	*
 java/text/DefaultBreakIterator.java: Removed. 	*
 java/text/DecimalFormatSymbols.java: Merged with libgcj. 	*
 java/text/DateFormat.java: Merged with libgcj. 	*
 gnu/java/locale/Makefile.am (EXTRA_DIST): Added new file. 	*
 gnu/java/locale/LocaleInformation_en.java: Removed US-specific 
 entries. 	(collation_rules): Use `k,K', not `j,K'. 	*
 gnu/java/locale/LocaleInformation_en_US.java: New file. 	*
 java/text/NumberFormat.java: Merged with libgcj. 	*
 java/text/DecimalFormat.java: Merged with libgcj.

---
 gnu/java/text/CharacterBreakIterator.java | 205 ++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100644 gnu/java/text/CharacterBreakIterator.java

(limited to 'gnu/java/text/CharacterBreakIterator.java')

diff --git a/gnu/java/text/CharacterBreakIterator.java b/gnu/java/text/CharacterBreakIterator.java
new file mode 100644
index 000000000..68207ced8
--- /dev/null
+++ b/gnu/java/text/CharacterBreakIterator.java
@@ -0,0 +1,205 @@
+/* CharacterBreakIterator.java - Default character BreakIterator.
+   Copyright (C) 1999, 2001 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.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+
+package gnu.java.text;
+
+import java.text.BreakIterator;
+import java.text.CharacterIterator;
+
+/**
+ * @author Tom Tromey <tromey@cygnus.com>
+ * @date March 19, 1999
+ * Written using The Unicode Standard, Version 2.0.
+ */
+
+public class CharacterBreakIterator extends BaseBreakIterator
+{
+  // Hangul Jamo constants from Unicode book.
+  private static final int LBase = 0x1100;
+  private static final int VBase = 0x1161;
+  private static final int TBase = 0x11a7;
+  private static final int LCount = 19;
+  private static final int VCount = 21;
+  private static final int TCount = 28;
+
+  // Information about surrogates.
+  private static final int highSurrogateStart = 0xD800;
+  private static final int highSurrogateEnd = 0xDBFF;
+  private static final int lowSurrogateStart = 0xDC00;
+  private static final int lowSurrogateEnd = 0xDFFF;
+
+  public Object clone ()
+  {
+    return new CharacterBreakIterator (this);
+  }
+
+  public CharacterBreakIterator ()
+  {
+    iter = null;		// FIXME?
+  }
+
+  private CharacterBreakIterator (CharacterBreakIterator other)
+  {
+    iter = (CharacterIterator) other.iter.clone();
+  }
+
+  // Some methods to tell us different properties of characters.
+  private final boolean isL (char c)
+  {
+    return c >= LBase && c <= LBase + LCount;
+  }
+  private final boolean isV (char c)
+  {
+    return c >= VBase && c <= VBase + VCount;
+  }
+  private final boolean isT (char c)
+  {
+    return c >= TBase && c <= TBase + TCount;
+  }
+  private final boolean isLVT (char c)
+  {
+    return isL (c) || isV (c) || isT (c);
+  }
+  private final boolean isHighSurrogate (char c)
+  {
+    return c >= highSurrogateStart && c <= highSurrogateEnd;
+  }
+  private final boolean isLowSurrogate (char c)
+  {
+    return c >= lowSurrogateStart && c <= lowSurrogateEnd;
+  }
+
+  public int next ()
+  {
+    int end = iter.getEndIndex();
+    if (iter.getIndex() == end)
+      return DONE;
+
+    char c;
+    for (char prev = CharacterIterator.DONE; iter.getIndex() < end; prev = c)
+      {
+	c = iter.next();
+	if (c == CharacterIterator.DONE)
+	  break;
+	int type = Character.getType(c);
+
+	// Break after paragraph separators.
+	if (type == Character.PARAGRAPH_SEPARATOR)
+	  break;
+
+	// Now we need some lookahead.
+	char ahead = iter.next();
+	iter.previous();
+	if (ahead == CharacterIterator.DONE)
+	  break;
+	int aheadType = Character.getType(ahead);
+
+	if (aheadType != Character.NON_SPACING_MARK
+	    && ! isLowSurrogate (ahead)
+	    && ! isLVT (ahead))
+	  break;
+	if (! isLVT (c) && isLVT (ahead))
+	  break;
+	if (isL (c) && ! isLVT (ahead)
+	    && aheadType != Character.NON_SPACING_MARK)
+	  break;
+	if (isV (c) && ! isV (ahead) && !isT (ahead)
+	    && aheadType != Character.NON_SPACING_MARK)
+	  break;
+	if (isT (c) && ! isT (ahead)
+	    && aheadType != Character.NON_SPACING_MARK)
+	  break;
+
+	if (! isHighSurrogate (c) && isLowSurrogate (ahead))
+	  break;
+	if (isHighSurrogate (c) && ! isLowSurrogate (ahead))
+	  break;
+	if (! isHighSurrogate (prev) && isLowSurrogate (c))
+	  break;
+      }
+
+    return iter.getIndex();
+  }
+
+  public int previous ()
+  {
+    if (iter.getIndex() == iter.getBeginIndex())
+      return DONE;
+
+    int start = iter.getBeginIndex();
+    while (iter.getIndex() >= iter.getBeginIndex())
+      {
+	char c = iter.previous();
+	if (c == CharacterIterator.DONE)
+	  break;
+	int type = Character.getType(c);
+
+	if (type != Character.NON_SPACING_MARK
+	    && ! isLowSurrogate (c)
+	    && ! isLVT (c))
+	  break;
+
+	// Now we need some lookahead.
+	char ahead = iter.previous();
+	if (ahead == CharacterIterator.DONE)
+	  {
+	    iter.next();
+	    break;
+	  }
+	char ahead2 = iter.previous();
+	iter.next();
+	iter.next();
+	if (ahead2 == CharacterIterator.DONE)
+	  break;
+	int aheadType = Character.getType(ahead);
+
+	if (aheadType == Character.PARAGRAPH_SEPARATOR)
+	  break;
+
+	if (isLVT (c) && ! isLVT (ahead))
+	  break;
+	if (! isLVT (c) && type != Character.NON_SPACING_MARK
+	    && isL (ahead))
+	  break;
+	if (! isV (c) && ! isT (c) && type != Character.NON_SPACING_MARK
+	    && isV (ahead))
+	  break;
+	if (! isT (c) && type != Character.NON_SPACING_MARK
+	    && isT (ahead))
+	  break;
+
+	if (isLowSurrogate (c) && ! isHighSurrogate (ahead))
+	  break;
+	if (! isLowSurrogate (c) && isHighSurrogate (ahead))
+	  break;
+	if (isLowSurrogate (ahead) && ! isHighSurrogate (ahead2))
+	  break;
+      }
+
+    return iter.getIndex();
+  }
+}
-- 
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