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downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 444 insertions, 0 deletions

diff --git a/libjava/classpath/java/text/BreakIterator.java b/libjava/classpath/java/text/BreakIterator.java
new file mode 100644
index 000000000..628cb7235
--- /dev/null
+++ b/libjava/classpath/java/text/BreakIterator.java
@@ -0,0 +1,444 @@
+/* BreakIterator.java -- Breaks text into elements
+   Copyright (C) 1998, 1999, 2001, 2004, 2005, 2007
+   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., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.text;
+
+import gnu.java.locale.LocaleHelper;
+
+import gnu.java.text.CharacterBreakIterator;
+import gnu.java.text.LineBreakIterator;
+import gnu.java.text.SentenceBreakIterator;
+import gnu.java.text.WordBreakIterator;
+
+import java.text.spi.BreakIteratorProvider;
+
+import java.util.Locale;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+import java.util.ServiceLoader;
+
+/**
+ * This class iterates over text elements such as words, lines, sentences,
+ * and characters.  It can only iterate over one of these text elements at
+ * a time.  An instance of this class configured for the desired iteration
+ * type is created by calling one of the static factory methods, not
+ * by directly calling a constructor.
+ *
+ * The standard iterators created by the factory methods in this
+ * class will be valid upon creation.  That is, their methods will
+ * not cause exceptions if called before you call setText().
+ *
+ * @author Tom Tromey (tromey@cygnus.com)
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @date March 19, 1999
+ */
+/* Written using "Java Class Libraries", 2nd edition, plus online
+ * API docs for JDK 1.2 beta from http://www.javasoft.com.
+ * Status:  Believed complete and correct to 1.1.
+ */
+public abstract class BreakIterator implements Cloneable
+{
+  /**
+   * This value is returned by the <code>next()</code> and
+   * <code>previous</code> in order to indicate that the end of the
+   * text has been reached.
+   */
+  // The value was discovered by writing a test program.
+  public static final int DONE = -1;
+
+  /**
+   * This method initializes a new instance of <code>BreakIterator</code>.
+   * This protected constructor is available to subclasses as a default
+   * no-arg superclass constructor.
+   */
+  protected BreakIterator ()
+  {
+  }
+
+  /**
+   * Create a clone of this object.
+   */
+  public Object clone ()
+  {
+    try
+      {
+        return super.clone();
+      }
+    catch (CloneNotSupportedException e)
+      {
+        return null;
+      }
+  }
+
+  /**
+   * This method returns the index of the current text element boundary.
+   *
+   * @return The current text boundary.
+   */
+  public abstract int current ();
+
+  /**
+   * This method returns the first text element boundary in the text being
+   * iterated over.
+   *
+   * @return The first text boundary.
+   */
+  public abstract int first ();
+
+  /**
+   * This methdod returns the offset of the text element boundary following
+   * the specified offset.
+   *
+   * @param pos The text index from which to find the next text boundary.
+   *
+   * @return The next text boundary following the specified index.
+   */
+  public abstract int following (int pos);
+
+  /**
+   * This method returns a list of locales for which instances of
+   * <code>BreakIterator</code> are available.
+   *
+   * @return A list of available locales
+   */
+  public static synchronized Locale[] getAvailableLocales ()
+  {
+    Locale[] l = new Locale[1];
+    l[0] = Locale.US;
+    return l;
+  }
+
+  private static BreakIterator getInstance (String type, Locale loc)
+  {
+    String className;
+    try
+      {
+        ResourceBundle res
+          = ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
+                                     loc, ClassLoader.getSystemClassLoader());
+        className = res.getString(type);
+      }
+    catch (MissingResourceException x)
+      {
+        return null;
+      }
+    try
+      {
+        Class k = Class.forName(className);
+        return (BreakIterator) k.newInstance();
+      }
+    catch (ClassNotFoundException x1)
+      {
+        return null;
+      }
+    catch (InstantiationException x2)
+      {
+        return null;
+      }
+    catch (IllegalAccessException x3)
+      {
+        return null;
+      }
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over characters as defined in the default locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getCharacterInstance ()
+  {
+    return getCharacterInstance (Locale.getDefault());
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over characters as defined in the specified locale.
+   *
+   * @param locale The desired locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the specified locale.
+   */
+  public static BreakIterator getCharacterInstance (Locale locale)
+  {
+    BreakIterator r = getInstance("CharacterIterator", locale);
+    if (r != null)
+      return r;
+    for (BreakIteratorProvider p :
+           ServiceLoader.load(BreakIteratorProvider.class))
+      {
+        for (Locale loc : p.getAvailableLocales())
+          {
+            if (loc.equals(locale))
+              {
+                BreakIterator bi = p.getCharacterInstance(locale);
+                if (bi != null)
+                  return bi;
+                break;
+              }
+          }
+      }
+    if (locale.equals(Locale.ROOT))
+      return new CharacterBreakIterator();
+    return getCharacterInstance(LocaleHelper.getFallbackLocale(locale));
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over line breaks as defined in the default locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getLineInstance ()
+  {
+    return getLineInstance (Locale.getDefault());
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over line breaks as defined in the specified locale.
+   *
+   * @param locale The desired locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getLineInstance (Locale locale)
+  {
+    BreakIterator r = getInstance ("LineIterator", locale);
+    if (r != null)
+      return r;
+    for (BreakIteratorProvider p :
+           ServiceLoader.load(BreakIteratorProvider.class))
+      {
+        for (Locale loc : p.getAvailableLocales())
+          {
+            if (loc.equals(locale))
+              {
+                BreakIterator bi = p.getLineInstance(locale);
+                if (bi != null)
+                  return bi;
+                break;
+              }
+          }
+      }
+    if (locale.equals(Locale.ROOT))
+      return new LineBreakIterator();
+    return getLineInstance(LocaleHelper.getFallbackLocale(locale));
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over sentences as defined in the default locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getSentenceInstance ()
+  {
+    return getSentenceInstance (Locale.getDefault());
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over sentences as defined in the specified locale.
+   *
+   * @param locale The desired locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getSentenceInstance (Locale locale)
+  {
+    BreakIterator r = getInstance ("SentenceIterator", locale);
+    if (r != null)
+      return r;
+    for (BreakIteratorProvider p :
+           ServiceLoader.load(BreakIteratorProvider.class))
+      {
+        for (Locale loc : p.getAvailableLocales())
+          {
+            if (loc.equals(locale))
+              {
+                BreakIterator bi = p.getSentenceInstance(locale);
+                if (bi != null)
+                  return bi;
+                break;
+              }
+          }
+      }
+    if (locale.equals(Locale.ROOT))
+      return new SentenceBreakIterator();
+    return getSentenceInstance(LocaleHelper.getFallbackLocale(locale));
+  }
+
+  /**
+   * This method returns the text this object is iterating over as a
+   * <code>CharacterIterator</code>.
+   *
+   * @return The text being iterated over.
+   */
+  public abstract CharacterIterator getText ();
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over words as defined in the default locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getWordInstance ()
+  {
+    return getWordInstance (Locale.getDefault());
+  }
+
+  /**
+   * This method returns an instance of <code>BreakIterator</code> that will
+   * iterate over words as defined in the specified locale.
+   *
+   * @param locale The desired locale.
+   *
+   * @return A <code>BreakIterator</code> instance for the default locale.
+   */
+  public static BreakIterator getWordInstance (Locale locale)
+  {
+    BreakIterator r = getInstance ("WordIterator", locale);
+    if (r != null)
+      return r;
+    for (BreakIteratorProvider p :
+           ServiceLoader.load(BreakIteratorProvider.class))
+      {
+        for (Locale loc : p.getAvailableLocales())
+          {
+            if (loc.equals(locale))
+              {
+                BreakIterator bi = p.getWordInstance(locale);
+                if (bi != null)
+                  return bi;
+                break;
+              }
+          }
+      }
+    if (locale.equals(Locale.ROOT))
+      return new WordBreakIterator();
+    return getWordInstance(LocaleHelper.getFallbackLocale(locale));
+  }
+
+  /**
+   * This method tests whether or not the specified position is a text
+   * element boundary.
+   *
+   * @param pos The text position to test.
+   *
+   * @return <code>true</code> if the position is a boundary,
+   * <code>false</code> otherwise.
+   */
+  public boolean isBoundary (int pos)
+  {
+    if (pos == 0)
+      return true;
+    return following (pos - 1) == pos;
+  }
+
+  /**
+   * This method returns the last text element boundary in the text being
+   * iterated over.
+   *
+   * @return The last text boundary.
+   */
+  public abstract int last ();
+
+  /**
+   * This method returns the text element boundary following the current
+   * text position.
+   *
+   * @return The next text boundary.
+   */
+  public abstract int next ();
+
+  /**
+   * This method returns the n'th text element boundary following the current
+   * text position.
+   *
+   * @param n The number of text element boundaries to skip.
+   *
+   * @return The next text boundary.
+   */
+  public abstract int next (int n);
+
+  /**
+   * This methdod returns the offset of the text element boundary preceding
+   * the specified offset.
+   *
+   * @param pos The text index from which to find the preceding text boundary.
+   *
+   * @returns The next text boundary preceding the specified index.
+   */
+  public int preceding (int pos)
+  {
+    if (following (pos) == DONE)
+      last ();
+    while (previous () >= pos)
+      ;
+    return current ();
+  }
+
+  /**
+   * This method returns the text element boundary preceding the current
+   * text position.
+   *
+   * @return The previous text boundary.
+   */
+  public abstract int previous ();
+
+  /**
+   * This method sets the text string to iterate over.
+   *
+   * @param newText The <code>String</code> to iterate over.
+   */
+  public void setText (String newText)
+  {
+    setText (new StringCharacterIterator (newText));
+  }
+
+  /**
+   * This method sets the text to iterate over from the specified
+   * <code>CharacterIterator</code>.
+   *
+   * @param newText The desired <code>CharacterIterator</code>.
+   */
+  public abstract void setText (CharacterIterator newText);
+}