/*
* Copyright (c) 2008 Mozilla Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package org.wicketstuff.htmlvalidator.xml.langattributes;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.ErrorHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.AttributesImpl;
public class XmlLangAttributeDroppingContentHandlerWrapper implements ContentHandler {
private final ContentHandler delegate;
private final ErrorHandler errorHandler;
private Locator locator = null;
/**
* @param delegate
*/
public XmlLangAttributeDroppingContentHandlerWrapper(ContentHandler delegate, ErrorHandler errorHandler) {
this.delegate = delegate;
this.errorHandler = errorHandler;
}
/**
* @param arg0
* @param arg1
* @param arg2
* @throws SAXException
* @see org.xml.sax.ContentHandler#characters(char[], int, int)
*/
public void characters(char[] arg0, int arg1, int arg2) throws SAXException {
delegate.characters(arg0, arg1, arg2);
}
/**
* @throws SAXException
* @see org.xml.sax.ContentHandler#endDocument()
*/
public void endDocument() throws SAXException {
delegate.endDocument();
}
/**
* @param arg0
* @param arg1
* @param arg2
* @throws SAXException
* @see org.xml.sax.ContentHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
*/
public void endElement(String arg0, String arg1, String arg2)
throws SAXException {
delegate.endElement(arg0, arg1, arg2);
}
/**
* @param arg0
* @throws SAXException
* @see org.xml.sax.ContentHandler#endPrefixMapping(java.lang.String)
*/
public void endPrefixMapping(String arg0) throws SAXException {
delegate.endPrefixMapping(arg0);
}
/**
* @param arg0
* @param arg1
* @param arg2
* @throws SAXException
* @see org.xml.sax.ContentHandler#ignorableWhitespace(char[], int, int)
*/
public void ignorableWhitespace(char[] arg0, int arg1, int arg2)
throws SAXException {
delegate.ignorableWhitespace(arg0, arg1, arg2);
}
/**
* @param arg0
* @param arg1
* @throws SAXException
* @see org.xml.sax.ContentHandler#processingInstruction(java.lang.String, java.lang.String)
*/
public void processingInstruction(String arg0, String arg1)
throws SAXException {
delegate.processingInstruction(arg0, arg1);
}
/**
* @param arg0
* @see org.xml.sax.ContentHandler#setDocumentLocator(org.xml.sax.Locator)
*/
public void setDocumentLocator(Locator arg0) {
locator = arg0;
delegate.setDocumentLocator(arg0);
}
/**
* @param arg0
* @throws SAXException
* @see org.xml.sax.ContentHandler#skippedEntity(java.lang.String)
*/
public void skippedEntity(String arg0) throws SAXException {
delegate.skippedEntity(arg0);
}
/**
* @throws SAXException
* @see org.xml.sax.ContentHandler#startDocument()
*/
public void startDocument() throws SAXException {
delegate.startDocument();
}
/**
* @param ns
* @param arg1
* @param arg2
* @param attributes
* @throws SAXException
* @see org.xml.sax.ContentHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
*/
public void startElement(String ns, String arg1, String arg2,
Attributes attributes) throws SAXException {
if ("http://www.w3.org/1999/xhtml" == ns) {
delegate.startElement(ns, arg1, arg2, filterAttributes(attributes));
} else {
delegate.startElement(ns, arg1, arg2, attributes);
}
}
private static boolean equalsIgnoreAsciiCase(String one,
String other) {
if (other == null) {
if (one == null) {
return true;
} else {
return false;
}
}
if (one.length() != other.length()) {
return false;
}
for (int i = 0; i < one.length(); i++) {
char c0 = one.charAt(i);
char c1 = other.charAt(i);
if (c0 >= 'A' && c0 <= 'Z') {
c0 += 0x20;
}
if (c1 >= 'A' && c1 <= 'Z') {
c1 += 0x20;
}
if (c0 != c1) {
return false;
}
}
return true;
}
private Attributes filterAttributes(Attributes attributes) throws SAXException {
int len = attributes.getLength();
String langValue = null;
for (int i = 0; i < len; i++) {
String local = attributes.getLocalName(i);
String uri = attributes.getURI(i);
if (local == "lang" && uri == "http://www.w3.org/XML/1998/namespace") {
langValue = attributes.getValue(i);
} else if (local == "xml:lang" && uri == "") {
String xmlLangValue = attributes.getValue(i);
AttributesImpl attributesImpl = new AttributesImpl();
for (int j = 0; j < i; j++) {
attributesImpl.addAttribute(attributes.getURI(j), attributes.getLocalName(j), attributes.getQName(j), attributes.getType(j), attributes.getValue(j));
}
for (int k = i + 1; k < len; k++) {
uri = attributes.getURI(k);
local = attributes.getLocalName(k);
if (local == "lang" && uri == "http://www.w3.org/XML/1998/namespace") {
langValue = attributes.getValue(k);
}
attributesImpl.addAttribute(uri, local, attributes.getQName(k), attributes.getType(k), attributes.getValue(k));
}
if (errorHandler != null && !equalsIgnoreAsciiCase(xmlLangValue, langValue)) {
errorHandler.error(new SAXParseException("When the attribute \u201Cxml:lang\u201D in no namespace is specified, the element must also have the attribute \u201Clang\u201D present with the same value.", locator));
}
return attributesImpl;
}
}
return attributes;
}
/**
* @param arg0
* @param arg1
* @throws SAXException
* @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String, java.lang.String)
*/
public void startPrefixMapping(String arg0, String arg1)
throws SAXException {
delegate.startPrefixMapping(arg0, arg1);
}
}