1 /* 2 * Copyright (c) 2010 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "core/css/CSSOMUtils.h" 33 34 #include "wtf/HexNumber.h" 35 #include "wtf/text/StringBuilder.h" 36 37 namespace WebCore { 38 39 void serializeCharacter(UChar32 c, StringBuilder& appendTo) 40 { 41 appendTo.append('\\'); 42 appendTo.append(c); 43 } 44 45 void serializeCharacterAsCodePoint(UChar32 c, StringBuilder& appendTo) 46 { 47 appendTo.append('\\'); 48 appendUnsignedAsHex(c, appendTo, Lowercase); 49 appendTo.append(' '); 50 } 51 52 void serializeIdentifier(const String& identifier, StringBuilder& appendTo) 53 { 54 bool isFirst = true; 55 bool isSecond = false; 56 bool isFirstCharHyphen = false; 57 unsigned index = 0; 58 while (index < identifier.length()) { 59 UChar32 c = identifier.characterStartingAt(index); 60 index += U16_LENGTH(c); 61 62 if (c <= 0x1f || (0x30 <= c && c <= 0x39 && (isFirst || (isSecond && isFirstCharHyphen)))) 63 serializeCharacterAsCodePoint(c, appendTo); 64 else if (c == 0x2d && isSecond && isFirstCharHyphen) 65 serializeCharacter(c, appendTo); 66 else if (0x80 <= c || c == 0x2d || c == 0x5f || (0x30 <= c && c <= 0x39) || (0x41 <= c && c <= 0x5a) || (0x61 <= c && c <= 0x7a)) 67 appendTo.append(c); 68 else 69 serializeCharacter(c, appendTo); 70 71 if (isFirst) { 72 isFirst = false; 73 isSecond = true; 74 isFirstCharHyphen = (c == 0x2d); 75 } else if (isSecond) { 76 isSecond = false; 77 } 78 } 79 } 80 81 void serializeString(const String& string, StringBuilder& appendTo) 82 { 83 appendTo.append('\"'); 84 85 unsigned index = 0; 86 while (index < string.length()) { 87 UChar32 c = string.characterStartingAt(index); 88 index += U16_LENGTH(c); 89 if (c <= 0x1f) 90 serializeCharacterAsCodePoint(c, appendTo); 91 else if (c == 0x22 || c == 0x5c) 92 serializeCharacter(c, appendTo); 93 else 94 appendTo.append(c); 95 } 96 97 appendTo.append('\"'); 98 } 99 100 } // namespace WebCore 101