/* | |
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved. | |
* Copyright (C) 2009 Dominik Röttsches <dominik.roettsches@access-company.com> | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include "config.h" | |
#include "TextBoundaries.h" | |
#include "StringImpl.h" | |
#include "TextBreakIterator.h" | |
#include <wtf/unicode/Unicode.h> | |
using namespace WTF; | |
using namespace Unicode; | |
namespace WebCore { | |
int findNextWordFromIndex(const UChar* chars, int len, int position, bool forward) | |
{ | |
TextBreakIterator* it = wordBreakIterator(chars, len); | |
if (forward) { | |
position = textBreakFollowing(it, position); | |
while (position != TextBreakDone) { | |
// We stop searching when the character preceeding the break | |
// is alphanumeric. | |
if (position < len && isAlphanumeric(chars[position - 1])) | |
return position; | |
position = textBreakFollowing(it, position); | |
} | |
return len; | |
} else { | |
position = textBreakPreceding(it, position); | |
while (position != TextBreakDone) { | |
// We stop searching when the character following the break | |
// is alphanumeric. | |
if (position > 0 && isAlphanumeric(chars[position])) | |
return position; | |
position = textBreakPreceding(it, position); | |
} | |
return 0; | |
} | |
} | |
void findWordBoundary(const UChar* chars, int len, int position, int* start, int* end) | |
{ | |
TextBreakIterator* it = wordBreakIterator(chars, len); | |
*end = textBreakFollowing(it, position); | |
if (*end < 0) | |
*end = textBreakLast(it); | |
*start = textBreakPrevious(it); | |
} | |
} // namespace WebCore |