Windows-4.7.4/src/3rdparty/webkit/WebCore/platform/text/wince/TextBoundariesWince.cpp

/*
 * Copyright (C) 2006 Zack Rusin <zack@kde.org>
 * Copyright (C) 2007-2009 Torch Mobile, Inc. All rights reserved.
 *
 * 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 "NotImplemented.h"
#include "PlatformString.h"

using namespace WTF::Unicode;

namespace WebCore {

int findNextWordFromIndex(const UChar * buffer, int len, int position, bool forward)
{
    notImplemented();
    return 0;
}

void findWordBoundary(const UChar * buffer, int len, int position, int* start, int* end)
{
    if (position > len) {
        *start = 0;
        *end = 0;
        return;
    }

    String str(buffer, len);

    int currentPosition = position - 1;
    String foundWord;
    while (currentPosition >= 0 && isLetter(str[currentPosition])) {
        UChar c = str[currentPosition];
        foundWord.insert(&c, 1, 0);
        --currentPosition;
    }

    // currentPosition == 0 means the first char is not letter
    // currentPosition == -1 means we reached the beginning
    int startPos = (currentPosition < 0) ? 0 : ++currentPosition;
    currentPosition = position;
    while (isLetter(str[currentPosition])) {
        foundWord.append(str[currentPosition]);
        ++currentPosition;
    }

    *start = startPos;
    *end = currentPosition;
}


}