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Diffstat (limited to 'WebCore/dom/DatasetDOMStringMap.cpp')
-rw-r--r-- | WebCore/dom/DatasetDOMStringMap.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/WebCore/dom/DatasetDOMStringMap.cpp b/WebCore/dom/DatasetDOMStringMap.cpp new file mode 100644 index 0000000..6359d55 --- /dev/null +++ b/WebCore/dom/DatasetDOMStringMap.cpp @@ -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 |