+++ /dev/null
-/* AttributedStringIterator.java -- Class to iterate over AttributedString
- Copyright (C) 1998, 1999 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 java.text;
-
-import java.util.Set;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.HashMap;
-import java.util.Iterator;
-
-/**
- * This class implements the AttributedCharacterIterator interface. It
- * is used by AttributedString.getIterator().
- *
- * @version 0.0
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-class AttributedStringIterator implements AttributedCharacterIterator
-{
-
-/*************************************************************************/
-
-/**
- * Instance Variables
- */
-
-/**
- * The character iterator containing the text
- */
-private CharacterIterator ci;
-
-/**
- * The list of attributes and ranges
- */
-private AttributedString.AttributeRange[] attribs;
-
-/**
- * The list of attributes that the user is interested in. We may,
- * at our option, not return any other attributes.
- */
-private AttributedCharacterIterator.Attribute[] restricts;
-
-/*************************************************************************/
-
-/*
- * Constructors
- */
-
-AttributedStringIterator(StringCharacterIterator sci,
- AttributedString.AttributeRange[] attribs,
- int begin_index, int end_index,
- AttributedCharacterIterator.Attribute[] restricts)
-{
- this.ci = new StringCharacterIterator(sci, begin_index, end_index);
- this.attribs = attribs;
- this.restricts = restricts;
-}
-
-/*************************************************************************/
-
-/*
- * Instance Methods
- */
-
-// First we have a bunch of stupid redirects. If StringCharacterIterator
-// weren't final, I just would have extended that for this class. Alas, no.
-
-public Object
-clone()
-{
- return(ci.clone());
-}
-
-public char
-current()
-{
- return(ci.current());
-}
-
-public char
-next()
-{
- return(ci.next());
-}
-
-public char
-previous()
-{
- return(ci.previous());
-}
-
-public char
-first()
-{
- return(ci.first());
-}
-
-public char
-last()
-{
- return(ci.last());
-}
-
-public int
-getIndex()
-{
- return(ci.getIndex());
-}
-
-public char
-setIndex(int index)
-{
- return(ci.setIndex(index));
-}
-
-public int
-getBeginIndex()
-{
- return(ci.getBeginIndex());
-}
-
-public int
-getEndIndex()
-{
- return(ci.getEndIndex());
-}
-
-/*
- * Here is where the AttributedCharacterIterator methods start.
- */
-
-/*************************************************************************/
-
-/**
- * Returns a list of all the attribute keys that are defined anywhere
- * on this string.
- */
-public Set
-getAllAttributeKeys()
-{
- HashSet s = new HashSet();
- if (attribs == null)
- return(s);
-
- for (int i = 0; i < attribs.length; i++)
- {
- Set key_set = attribs[i].attribs.keySet();
- Iterator iter = key_set.iterator();
- while (iter.hasNext())
- {
- s.add(iter.next());
- }
- }
-
- return(s);
-}
-
-/*************************************************************************/
-
-/**
- * Various methods that determine how far the run extends for various
- * attribute combinations.
- */
-
-public int
-getRunLimit()
-{
- return(getRunLimit(getAttributes().keySet()));
-}
-
-public int
-getRunLimit(AttributedCharacterIterator.Attribute attrib)
-{
- HashSet s = new HashSet();
- s.add(attrib);
-
- return(getRunLimit(s));
-}
-
-public synchronized int
-getRunLimit(Set attribute_set)
-{
- int orig_index = ci.getIndex();
- int run_limit;
-
- do
- {
- run_limit = ci.getIndex();
-
- Map attribute_map = getAttributes();
-
- boolean found = false;
- Iterator iter = attribute_set.iterator();
- while(iter.hasNext())
- if (!attribute_map.containsKey(iter.next()))
- {
- found = true;
- break;
- }
-
- if (found)
- break;
- }
- while (ci.next() != CharacterIterator.DONE);
-
- boolean hit_end = (ci.previous() == CharacterIterator.DONE);
-
- ci.setIndex(orig_index);
-
- if (run_limit == orig_index)
- return(-1); // No characters match the given attributes
-// else if (!hit_end)
-// --run_limit;
-
- return(run_limit);
-}
-
-/*************************************************************************/
-
-/**
- * Various methods that determine where the run begins for various
- * attribute combinations.
- */
-
-public int
-getRunStart()
-{
- return(getRunStart(getAttributes().keySet()));
-}
-
-public int
-getRunStart(AttributedCharacterIterator.Attribute attrib)
-{
- HashSet s = new HashSet();
- s.add(attrib);
-
- return(getRunStart(s));
-}
-
-public int
-getRunStart(Set attribute_set)
-{
- int orig_index = ci.getIndex();
- int run_start;
-
- do
- {
- run_start = ci.getIndex();
-
- Map attribute_map = getAttributes();
-
- Iterator iter = attribute_set.iterator();
- while(iter.hasNext())
- if (!attribute_map.containsKey(iter.next()))
- break;
-
- if (iter.hasNext())
- break;
- }
- while (ci.previous() != CharacterIterator.DONE);
-
- boolean hit_beginning = (ci.previous() == CharacterIterator.DONE);
-
- ci.setIndex(orig_index);
-
- if (run_start == orig_index)
- return(-1); // No characters match the given attributes
- else if (!hit_beginning)
- ++run_start;
-
- return(run_start);
-}
-
-/*************************************************************************/
-
-public Object
-getAttribute(AttributedCharacterIterator.Attribute attrib)
-{
- if (attribs == null)
- return(null);
-
- for (int i = 0; i < attribs.length; i++)
- {
- Set key_set = attribs[i].attribs.keySet();
- Iterator iter = key_set.iterator();
- while (iter.hasNext())
- {
- Object obj = iter.next();
-
- // Check for attribute match and range match
- if (obj.equals(attrib))
- if ((ci.getIndex() >= attribs[i].begin_index) &&
- (ci.getIndex() <= attribs[i].end_index))
- return(attribs[i].attribs.get(obj));
- }
- }
-
- return(null);
-}
-
-/*************************************************************************/
-
-/**
- * Return a list of all the attributes and values defined for this
- * character
- */
-public Map
-getAttributes()
-{
- HashMap m = new HashMap();
- if (attribs == null)
- return(m);
-
- for (int i = 0; i < attribs.length; i++)
- {
- if ((ci.getIndex() >= attribs[i].begin_index) &&
- (ci.getIndex() <= attribs[i].end_index))
- m.putAll(attribs[i].attribs);
- }
-
- return(m);
-}
-
-} // class AttributedStringIterator
-
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