Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 124 insertions, 0 deletions

diff --git a/Source/WebCore/css/CSSOMUtils.cpp b/Source/WebCore/css/CSSOMUtils.cpp
new file mode 100644
index 000000000..33642db59
--- /dev/null
+++ b/Source/WebCore/css/CSSOMUtils.cpp
@@ -0,0 +1,124 @@
+/*
+ * 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>
+#include <wtf/text/StringBuilder.h>
+
+namespace WebCore {
+
+static void appendCharacter(UChar32 c, StringBuilder& 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, StringBuilder& appendTo)
+{
+    appendTo.append('\\');
+    appendCharacter(c, appendTo);
+}
+
+void serializeCharacterAsCodePoint(UChar32 c, StringBuilder& appendTo)
+{
+    appendTo.append('\\');
+    appendUnsignedAsHex(c, appendTo, Lowercase);
+    appendTo.append(' ');
+}
+
+void serializeIdentifier(const String& identifier, String& appendTo)
+{
+    StringBuilder addend;
+    serializeIdentifier(identifier, addend);
+    appendTo.append(addend.toString());
+}
+
+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))
+            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)
+{
+    StringBuilder addend;
+    serializeString(string, addend);
+    appendTo.append(addend.toString());
+}
+
+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
+            appendCharacter(c, appendTo);
+    }
+
+    appendTo.append('\"');
+}
+
+} // namespace WebCore