diff options
Diffstat (limited to 'WebCore/css/CSSOMUtils.cpp')
-rw-r--r-- | WebCore/css/CSSOMUtils.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/WebCore/css/CSSOMUtils.cpp b/WebCore/css/CSSOMUtils.cpp new file mode 100644 index 0000000..d1e9638 --- /dev/null +++ b/WebCore/css/CSSOMUtils.cpp @@ -0,0 +1,121 @@ +/* + * Copyright (c) 2010 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. + */ + +#include "config.h" +#include "CSSOMUtils.h" + +#include "PlatformString.h" + +namespace WebCore { + +static void appendCharacter(UChar32 c, Vector<UChar>& appendTo) +{ + if (U16_LENGTH(c) == 1) + appendTo.append(static_cast<UChar>(c)); + else { + appendTo.append(U16_LEAD(c)); + appendTo.append(U16_TRAIL(c)); + } +} + +void serializeCharacter(UChar32 c, Vector<UChar>& appendTo) +{ + appendTo.append('\\'); + appendCharacter(c, appendTo); +} + +void serializeCharacterAsCodePoint(UChar32 c, Vector<UChar>& appendTo) +{ + append(appendTo, String::format("\\%x ", c)); +} + +void serializeIdentifier(const String& identifier, String& appendTo) +{ + Vector<UChar> addend; + serializeIdentifier(identifier, addend); + appendTo.append(String::adopt(addend)); +} + +void serializeIdentifier(const String& identifier, Vector<UChar>& appendTo) +{ + bool isFirst = true; + bool isSecond = false; + bool isFirstCharHyphen = false; + unsigned index = 0; + while (index < identifier.length()) { + UChar32 c = identifier.characterStartingAt(index); + index += U16_LENGTH(c); + + if (c <= 0x1f || (0x30 <= c && c <= 0x39 && (isFirst || (isSecond && isFirstCharHyphen)))) + serializeCharacterAsCodePoint(c, appendTo); + else if (c == 0x2d && isSecond && isFirstCharHyphen) + serializeCharacter(c, appendTo); + else if (0x80 <= c || c == 0x2d || c == 0x5f || (0x30 <= c && c <= 0x39) || (0x41 <= c && c <= 0x5a) || (0x61 <= c && c <= 0x7a)) + appendCharacter(c, appendTo); + else + serializeCharacter(c, appendTo); + + if (isFirst) { + isFirst = false; + isSecond = true; + isFirstCharHyphen = (c == 0x2d); + } else if (isSecond) { + isSecond = false; + } + } +} + +void serializeString(const String& string, String& appendTo) +{ + Vector<UChar> addend; + serializeString(string, addend); + appendTo.append(String::adopt(addend)); +} + +void serializeString(const String& string, Vector<UChar>& appendTo) +{ + appendTo.append('\"'); + + unsigned index = 0; + while (index < string.length()) { + UChar32 c = string.characterStartingAt(index); + index += U16_LENGTH(c); + if (c <= 0x1f) + serializeCharacterAsCodePoint(c, appendTo); + else if (c == 0x22 || c == 0x5c) + serializeCharacter(c, appendTo); + else + appendCharacter(c, appendTo); + } + + appendTo.append('\"'); +} + +} // namespace WebCore |