--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/DatasetDOMStringMap.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2010 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "DatasetDOMStringMap.h"
+
+#include "Attribute.h"
+#include "Element.h"
+#include "ExceptionCode.h"
+#include "NamedNodeMap.h"
+#include <wtf/ASCIICType.h>
+
+namespace WebCore {
+
+static bool isValidAttributeName(const String& name)
+{
+    if (!name.startsWith("data-"))
+        return false;
+
+    const UChar* characters = name.characters();
+    unsigned length = name.length();
+    for (unsigned i = 5; i < length; ++i) {
+        if (isASCIIUpper(characters[i]))
+            return false;
+    }
+
+    return true;
+}
+
+static String convertAttributeNameToPropertyName(const String& name)
+{
+    Vector<UChar> newStringBuffer;
+
+    const UChar* characters = name.characters();
+    unsigned length = name.length();
+    for (unsigned i = 5; i < length; ++i) {
+        if (characters[i] != '-')
+            newStringBuffer.append(characters[i]);
+        else {
+            if ((i + 1 < length) && isASCIILower(characters[i + 1])) {
+                newStringBuffer.append(toASCIIUpper(characters[i + 1]));
+                ++i;
+            } else
+                newStringBuffer.append(characters[i]);
+        }
+    }
+
+    return String::adopt(newStringBuffer);
+}
+
+static bool propertyNameMatchesAttributeName(const String& propertyName, const String& attributeName)
+{
+    // FIXME: This should be able to match without creating a new string.
+
+    if (!isValidAttributeName(attributeName))
+        return false;
+
+    String convertedName = convertAttributeNameToPropertyName(attributeName);
+    return (convertedName == propertyName);
+}
+
+static bool isValidPropertyName(const String& name)
+{
+    const UChar* characters = name.characters();
+    unsigned length = name.length();
+    for (unsigned i = 0; i < length; ++i) {
+        if (characters[i] == '-' && (i + 1 < length) && isASCIILower(characters[i + 1]))
+            return false;
+    }
+    return true;
+}
+
+static String convertPropertyNameToAttributeName(const String& name)
+{
+    Vector<UChar> newStringBuffer;
+
+    newStringBuffer.append('d');
+    newStringBuffer.append('a');
+    newStringBuffer.append('t');
+    newStringBuffer.append('a');
+    newStringBuffer.append('-');
+
+    const UChar* characters = name.characters();
+    unsigned length = name.length();
+    for (unsigned i = 0; i < length; ++i) {
+        if (isASCIIUpper(characters[i])) {
+            newStringBuffer.append('-');
+            newStringBuffer.append(toASCIILower(characters[i]));
+        } else
+            newStringBuffer.append(characters[i]);
+    }
+
+    return String::adopt(newStringBuffer);
+}
+
+
+void DatasetDOMStringMap::ref()
+{
+    m_element->ref();
+}
+
+void DatasetDOMStringMap::deref()
+{
+    m_element->deref();
+}
+
+void DatasetDOMStringMap::getNames(Vector<String>& names)
+{
+    NamedNodeMap* attributeMap = m_element->attributes(true);
+    if (attributeMap) {
+        unsigned length = attributeMap->length();
+        for (unsigned i = 0; i < length; i++) {
+            Attribute* attribute = attributeMap->attributeItem(i);
+            if (isValidAttributeName(attribute->localName()))
+                names.append(convertAttributeNameToPropertyName(attribute->localName()));
+        }
+    }
+}
+
+String DatasetDOMStringMap::item(const String& name)
+{
+    NamedNodeMap* attributeMap = m_element->attributes(true);
+    if (attributeMap) {
+        unsigned length = attributeMap->length();
+        for (unsigned i = 0; i < length; i++) {
+            Attribute* attribute = attributeMap->attributeItem(i);
+            if (propertyNameMatchesAttributeName(name, attribute->localName()))
+                return attribute->value();
+        }
+    }
+
+    return String();
+}
+
+bool DatasetDOMStringMap::contains(const String& name)
+{
+    NamedNodeMap* attributeMap = m_element->attributes(true);
+    if (attributeMap) {
+        unsigned length = attributeMap->length();
+        for (unsigned i = 0; i < length; i++) {
+            Attribute* attribute = attributeMap->attributeItem(i);
+            if (propertyNameMatchesAttributeName(name, attribute->localName()))
+                return true;
+        }
+    }
+    return false;
+}
+
+void DatasetDOMStringMap::setItem(const String& name, const String& value, ExceptionCode& ec)
+{
+    if (!isValidPropertyName(name)) {
+        ec = SYNTAX_ERR;
+        return;
+    }
+
+    m_element->setAttribute(convertPropertyNameToAttributeName(name), value, ec);
+}
+
+void DatasetDOMStringMap::deleteItem(const String& name, ExceptionCode& ec)
+{
+    if (!isValidPropertyName(name)) {
+        ec = SYNTAX_ERR;
+        return;
+    }
+
+    ExceptionCode dummy;
+    m_element->removeAttribute(convertPropertyNameToAttributeName(name), dummy);
+}
+
+} // namespace WebCore