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/*
* Copyright (C) 2014 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef Character_h
#define Character_h
#include "platform/PlatformExport.h"
#include "platform/text/TextDirection.h"
#include "platform/text/TextPath.h"
#include "wtf/HashSet.h"
#include "wtf/text/WTFString.h"
#include "wtf/unicode/CharacterNames.h"
namespace WebCore {
class PLATFORM_EXPORT Character {
public:
static CodePath characterRangeCodePath(const LChar*, unsigned) { return SimplePath; }
static CodePath characterRangeCodePath(const UChar*, unsigned len);
static bool isCJKIdeograph(UChar32);
static bool isCJKIdeographOrSymbol(UChar32);
static unsigned expansionOpportunityCount(const LChar*, size_t length, TextDirection, bool& isAfterExpansion);
static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion);
static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; }
static bool treatAsZeroWidthSpace(UChar c) { return treatAsZeroWidthSpaceInComplexScript(c) || c == 0x200c || c == 0x200d; }
static bool treatAsZeroWidthSpaceInComplexScript(UChar c) { return c < 0x20 || (c >= 0x7F && c < 0xA0) || c == softHyphen || c == zeroWidthSpace || (c >= 0x200e && c <= 0x200f) || (c >= 0x202a && c <= 0x202e) || c == zeroWidthNoBreakSpace || c == objectReplacementCharacter; }
static bool canReceiveTextEmphasis(UChar32);
static inline UChar normalizeSpaces(UChar character)
{
if (treatAsSpace(character))
return space;
if (treatAsZeroWidthSpace(character))
return zeroWidthSpace;
return character;
}
static String normalizeSpaces(const LChar*, unsigned length);
static String normalizeSpaces(const UChar*, unsigned length);
static bool isRoundingHackCharacter(UChar32 c)
{
return !(c & ~0xFF) && s_roundingHackCharacterTable[c];
}
private:
Character();
static const uint8_t s_roundingHackCharacterTable[256];
};
}
#endif
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