blob: 7ecd93851bd28ad5f9943d28be23e97f259a3ff6 [file] [log] [blame]
/*
* 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 <wtf/HexNumber.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)
{
appendTo.append('\\');
appendUnsignedAsHex(c, appendTo, Lowercase);
appendTo.append(' ');
}
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