Merge CSSMarkup and CSSOMUtils

Source/core/css/CSSMarkup.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 11 matching lines @@
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/css/CSSMarkup.h"
 
 #include "wtf/HexNumber.h"
 #include "wtf/text/StringBuffer.h"
+#include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 template <typename CharacterType>
 static inline bool isCSSTokenizerIdentifier(const CharacterType* characters, unsigned length)
 {
     const CharacterType* end = characters + length;
 
     // -?
     if (characters != end && characters[0] == '-')
@@ skipping 137 matching lines @@
 String quoteCSSStringIfNeeded(const String& string)
 {
     return isCSSTokenizerIdentifier(string) ? string : quoteCSSString(string);
 }
 
 String quoteCSSURLIfNeeded(const String& string)
 {
     return isCSSTokenizerURL(string) ? string : quoteCSSString(string);
 }
 
+static void serializeCharacter(UChar32 c, StringBuilder& appendTo)
+{
+    appendTo.append('\\');
+    appendTo.append(c);
+}
+
+static void serializeCharacterAsCodePoint(UChar32 c, StringBuilder& appendTo)
+{
+    appendTo.append('\\');
+    appendUnsignedAsHex(c, appendTo, Lowercase);
+    appendTo.append(' ');
+}
+
+void serializeIdentifier(const String& identifier, StringBuilder& 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))
+            appendTo.append(c);
+        else
+            serializeCharacter(c, appendTo);
+
+        if (isFirst) {
+            isFirst = false;
+            isSecond = true;
+            isFirstCharHyphen = (c == 0x2d);
+        } else if (isSecond) {
+            isSecond = false;
+        }
+    }
+}
+
+void serializeString(const String& string, StringBuilder& 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
+            appendTo.append(c);
+    }
+
+    appendTo.append('\"');
+}
+
 } // namespace blink