/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.model.ui.editor;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import org.eclipse.core.runtime.content.IContentDescription;
import org.eclipse.core.runtime.content.ITextContentDescriber;
import org.jboss.tools.common.CommonPlugin;
import org.jboss.tools.common.meta.impl.XModelMetaDataImpl;
import org.jboss.tools.common.model.loaders.EntityRecognizerContext;
import org.jboss.tools.common.util.FileUtil;
/**
* @author Viacheslav Kabanovich
*/
public class XMLContentDescriber extends org.eclipse.core.runtime.content.XMLContentDescriber implements ITextContentDescriber {
public int describe(InputStream contents, IContentDescription description) throws IOException {
super.describe(contents, description);
contents.reset();
String text = FileUtil.readStream(contents);
if(text.trim().length() > 0) {
return describe(text, description);
}
return INDETERMINATE;
}
public int describe(Reader contents, IContentDescription description) throws IOException {
super.describe(contents, description);
contents.reset();
String text = read(contents);
return describe(text, description);
}
private int describe(String text, IContentDescription description) {
String entity = XModelMetaDataImpl.getInstance().getEntityRecognizer().getEntityName(new EntityRecognizerContext("xml", text)); //$NON-NLS-1$
if(entity == null || entity.length() == 0 || entity.equals("FileXML") //$NON-NLS-1$
|| entity.equals("FileHibConfig3") || entity.equals("FileHibernate3") //$NON-NLS-1$ //$NON-NLS-2$
|| entity.equals("FileANT") //$NON-NLS-1$
) {
return INDETERMINATE;
}
return VALID;
}
static String read(Reader is) {
StringBuffer sb = new StringBuffer(""); //$NON-NLS-1$
try {
char[] b = new char[4096];
while(true) {
int l = is.read(b, 0, b.length);
if(l < 0) break;
sb.append(new String(b, 0, l));
}
is.close();
} catch (IOException e) {
CommonPlugin.getPluginLog().logError(e);
}
return sb.toString();
}
}