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100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/*
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* Copyright (c) 2010 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/core/css/CSSOMUtils.h"
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#include "sky/engine/wtf/HexNumber.h"
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#include "sky/engine/wtf/text/StringBuilder.h"
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namespace blink {
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void serializeCharacter(UChar32 c, StringBuilder& appendTo)
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{
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appendTo.append('\\');
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appendTo.append(c);
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}
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void serializeCharacterAsCodePoint(UChar32 c, StringBuilder& appendTo)
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{
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appendTo.append('\\');
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appendUnsignedAsHex(c, appendTo, Lowercase);
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appendTo.append(' ');
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}
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void serializeIdentifier(const String& identifier, StringBuilder& appendTo)
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{
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bool isFirst = true;
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bool isSecond = false;
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bool isFirstCharHyphen = false;
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unsigned index = 0;
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while (index < identifier.length()) {
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UChar32 c = identifier.characterStartingAt(index);
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index += U16_LENGTH(c);
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if (c <= 0x1f || (0x30 <= c && c <= 0x39 && (isFirst || (isSecond && isFirstCharHyphen))))
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serializeCharacterAsCodePoint(c, appendTo);
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else if (c == 0x2d && isSecond && isFirstCharHyphen)
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serializeCharacter(c, appendTo);
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else if (0x80 <= c || c == 0x2d || c == 0x5f || (0x30 <= c && c <= 0x39) || (0x41 <= c && c <= 0x5a) || (0x61 <= c && c <= 0x7a))
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appendTo.append(c);
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else
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serializeCharacter(c, appendTo);
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if (isFirst) {
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isFirst = false;
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isSecond = true;
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isFirstCharHyphen = (c == 0x2d);
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} else if (isSecond) {
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isSecond = false;
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}
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}
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}
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void serializeString(const String& string, StringBuilder& appendTo)
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{
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appendTo.append('\"');
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unsigned index = 0;
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while (index < string.length()) {
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UChar32 c = string.characterStartingAt(index);
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index += U16_LENGTH(c);
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if (c <= 0x1f)
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serializeCharacterAsCodePoint(c, appendTo);
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else if (c == 0x22 || c == 0x5c)
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serializeCharacter(c, appendTo);
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else
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appendTo.append(c);
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}
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appendTo.append('\"');
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}
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} // namespace blink
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