+++ /dev/null
-/* SentenceBreakIterator.java - Default sentence 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.
-
-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 gnu.java.text;
-
-import java.text.BreakIterator;
-import java.text.CharacterIterator;
-
-/**
- * @author Tom Tromey <tromey@cygnus.com>
- * @date March 23, 1999
- * Written using The Unicode Standard, Version 2.0.
- */
-
-public class SentenceBreakIterator extends BaseBreakIterator
-{
- public Object clone ()
- {
- return new SentenceBreakIterator (this);
- }
-
- public SentenceBreakIterator ()
- {
- iter = null;
- }
-
- private SentenceBreakIterator (SentenceBreakIterator other)
- {
- iter = (CharacterIterator) other.iter.clone();
- }
-
- public int next ()
- {
- int end = iter.getEndIndex();
- if (iter.getIndex() == end)
- return DONE;
-
- while (iter.getIndex() < end)
- {
- char c = iter.current();
- if (c == CharacterIterator.DONE)
- break;
- int type = Character.getType(c);
-
- char n = iter.next();
- if (n == CharacterIterator.DONE)
- break;
-
- // Always break after paragraph separator.
- if (type == Character.PARAGRAPH_SEPARATOR)
- break;
-
- if (c == '!' || c == '?')
- {
- // Skip close punctuation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.END_PUNCTUATION)
- n = iter.next();
- // Skip spaces.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.SPACE_SEPARATOR)
- n = iter.next();
- // Skip optional paragraph separator.
- if (n != CharacterIterator.DONE
- && Character.getType(n) == Character.PARAGRAPH_SEPARATOR)
- n = iter.next();
-
- // There's always a break somewhere after `!' or `?'.
- break;
- }
-
- if (c == '.')
- {
- int save = iter.getIndex();
- // Skip close punctuation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.END_PUNCTUATION)
- n = iter.next();
- // Skip spaces. We keep count because we need at least
- // one for this period to represent a terminator.
- int spcount = 0;
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.SPACE_SEPARATOR)
- {
- n = iter.next();
- ++spcount;
- }
- if (spcount > 0)
- {
- int save2 = iter.getIndex();
- // Skip over open puncutation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.START_PUNCTUATION)
- n = iter.next();
- // Next character must not be lower case.
- if (n == CharacterIterator.DONE
- || ! Character.isLowerCase(n))
- {
- iter.setIndex(save2);
- break;
- }
- }
- iter.setIndex(save);
- }
- }
-
- return iter.getIndex();
- }
-
- private final int previous_internal ()
- {
- int start = iter.getBeginIndex();
- if (iter.getIndex() == start)
- return DONE;
-
- while (iter.getIndex() >= start)
- {
- char c = iter.previous();
- if (c == CharacterIterator.DONE)
- break;
-
- char n = iter.previous();
- if (n == CharacterIterator.DONE)
- break;
- iter.next();
- int nt = Character.getType(n);
-
- if (! Character.isLowerCase(c)
- && (nt == Character.START_PUNCTUATION
- || nt == Character.SPACE_SEPARATOR))
- {
- int save = iter.getIndex();
- int save_nt = nt;
- char save_n = n;
- // Skip open punctuation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.START_PUNCTUATION)
- n = iter.previous();
- if (n == CharacterIterator.DONE)
- break;
- if (Character.getType(n) == Character.SPACE_SEPARATOR)
- {
- // Must have at least once space after the `.'.
- int save2 = iter.getIndex();
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.SPACE_SEPARATOR)
- n = iter.previous();
- // Skip close punctuation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.END_PUNCTUATION)
- n = iter.previous();
- if (n == CharacterIterator.DONE || n == '.')
- {
- // Communicate location of actual end.
- period = iter.getIndex();
- iter.setIndex(save2);
- break;
- }
- }
- iter.setIndex(save);
- nt = save_nt;
- n = save_n;
- }
-
- if (nt == Character.PARAGRAPH_SEPARATOR)
- {
- // Communicate location of actual end.
- period = iter.getIndex();
- break;
- }
- else if (nt == Character.SPACE_SEPARATOR
- || nt == Character.END_PUNCTUATION)
- {
- int save = iter.getIndex();
- // Skip spaces.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.SPACE_SEPARATOR)
- n = iter.previous();
- // Skip close punctuation.
- while (n != CharacterIterator.DONE
- && Character.getType(n) == Character.END_PUNCTUATION)
- n = iter.previous();
- int here = iter.getIndex();
- iter.setIndex(save);
- if (n == CharacterIterator.DONE || n == '!' || n == '?')
- {
- // Communicate location of actual end.
- period = here;
- break;
- }
- }
- else if (n == '!' || n == '?')
- {
- // Communicate location of actual end.
- period = iter.getIndex();
- break;
- }
- }
-
- return iter.getIndex();
- }
-
- public int previous ()
- {
- // We want to skip over the first sentence end to the second one.
- // However, at the end of the string we want the first end.
- int here = iter.getIndex();
- period = here;
- int first = previous_internal ();
- if (here == iter.getEndIndex() || first == DONE)
- return first;
- iter.setIndex(period);
- return previous_internal ();
- }
-
- // This is used for communication between previous and
- // previous_internal.
- private int period;
-}
projects / msp430-gcc.git / blobdiff