/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package org.apache.shindig.gadgets.parse;
import org.apache.shindig.gadgets.parse.nekohtml.NekoSimplifiedHtmlParser;
import com.google.inject.AbstractModule;
import com.google.inject.Provider;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
/**
* Provide parse bindings
*/
public class ParseModule extends AbstractModule {
/**
* {@inheritDoc}
*/
@Override
protected void configure() {
bind(GadgetHtmlParser.class).to(NekoSimplifiedHtmlParser.class);
bind(DOMImplementation.class).toProvider(DOMImplementationProvider.class);
}
/**
* Provider of new HTMLDocument implementations. Used to hide XML parser weirdness
*/
public static class DOMImplementationProvider implements Provider<DOMImplementation> {
DOMImplementation domImpl;
public DOMImplementationProvider() {
try {
DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
// Require the traversal API
domImpl = registry.getDOMImplementation("XML 1.0 Traversal 2.0");
} catch (Exception e) {
// Try another
}
// This is ugly but effective
try {
if (domImpl == null) {
domImpl = (DOMImplementation)
Class.forName("org.apache.xerces.dom.DOMImplementationImpl").
getMethod("getDOMImplementation").invoke(null);
}
} catch (Exception ex) {
//try another
}
try {
if (domImpl == null) {
domImpl = (DOMImplementation)
Class.forName("com.sun.org.apache.xerces.internal.dom.DOMImplementationImpl").
getMethod("getDOMImplementation").invoke(null);
}
} catch (Exception ex) {
throw new RuntimeException("Could not find HTML DOM implementation", ex);
}
}
public DOMImplementation get() {
return domImpl;
}
}
}