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      1 /*
      2  * Copyright (C) 2006 Zack Rusin <zack (at) kde.org>
      3  * Copyright (C) 2007-2009 Torch Mobile, Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "TextBoundaries.h"
     29 
     30 #include "NotImplemented.h"
     31 #include "PlatformString.h"
     32 
     33 using namespace WTF::Unicode;
     34 
     35 namespace WebCore {
     36 
     37 int findNextWordFromIndex(const UChar* buffer, int len, int position, bool forward)
     38 {
     39     notImplemented();
     40     return 0;
     41 }
     42 
     43 void findWordBoundary(const UChar* buffer, int len, int position, int* start, int* end)
     44 {
     45     if (position > len) {
     46         *start = 0;
     47         *end = 0;
     48         return;
     49     }
     50 
     51     String str(buffer, len);
     52 
     53     int currentPosition = position - 1;
     54     String foundWord;
     55     while (currentPosition >= 0 && isLetter(str[currentPosition])) {
     56         UChar c = str[currentPosition];
     57         foundWord.insert(&c, 1, 0);
     58         --currentPosition;
     59     }
     60 
     61     // currentPosition == 0 means the first char is not letter
     62     // currentPosition == -1 means we reached the beginning
     63     int startPos = (currentPosition < 0) ? 0 : ++currentPosition;
     64     currentPosition = position;
     65     while (isLetter(str[currentPosition])) {
     66         foundWord.append(str[currentPosition]);
     67         ++currentPosition;
     68     }
     69 
     70     *start = startPos;
     71     *end = currentPosition;
     72 }
     73 
     74 }
     75