1/* 2 * Copyright (C) 2004, 2006 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef TextBoundaries_h 27#define TextBoundaries_h 28 29#include <unicode/uchar.h> 30#include <wtf/Forward.h> 31 32namespace WebCore { 33 34 inline bool requiresContextForWordBoundary(UChar32 character) 35 { 36 // FIXME: This function won't be needed when https://bugs.webkit.org/show_bug.cgi?id=120656 is fixed. 37 38 // We can get rid of this constant if we require a newer version of the ICU headers. 39 const int WK_U_LB_CONDITIONAL_JAPANESE_STARTER = 37; 40 41 int lineBreak = u_getIntPropertyValue(character, UCHAR_LINE_BREAK); 42 return lineBreak == U_LB_COMPLEX_CONTEXT || lineBreak == WK_U_LB_CONDITIONAL_JAPANESE_STARTER || lineBreak == U_LB_IDEOGRAPHIC; 43 } 44 45 unsigned endOfFirstWordBoundaryContext(StringView); 46 unsigned startOfLastWordBoundaryContext(StringView); 47 48 void findWordBoundary(StringView, int position, int* start, int* end); 49 void findEndWordBoundary(StringView, int position, int* end); 50 int findNextWordFromIndex(StringView, int position, bool forward); 51 52} 53 54#endif 55