/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/*
* Created on Nov 22, 2004
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package org.apache.log4j.joran.util;
import org.apache.log4j.spi.ErrorItem;
import org.apache.log4j.xml.Log4jEntityResolver;
import org.xml.sax.InputSource;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
* @author ceki
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class XMLUtil {
public static final int CANT_SAY = 0;
public static final int WELL_FORMED = 1;
public static final int ILL_FORMED = 2;
public static final int UNRECOVERABLE_ERROR = 3;
public static int checkIfWellFormed(String filename, List errorList) {
int returnCode;
FileInputStream fis = null;
try {
fis = new FileInputStream(filename);
returnCode = checkIfWellFormed(new InputSource(fis), errorList);
} catch (IOException ioe) {
String errMsg = "Could not open [" + filename + "].";
errorList.add(new ErrorItem(errMsg, ioe));
returnCode = UNRECOVERABLE_ERROR;
} finally {
if (fis != null) {
try {
fis.close();
} catch (java.io.IOException e) {
}
}
}
return returnCode;
}
public static int checkIfWellFormed(URL url, List errorList) {
int returnCode;
InputStream in = null;
try {
in = url.openStream();
returnCode = checkIfWellFormed(new InputSource(in), errorList);
} catch (IOException ioe) {
String errMsg = "Could not open [" + url + "].";
errorList.add(new ErrorItem(errMsg, ioe));
returnCode = UNRECOVERABLE_ERROR;
} finally {
if (in != null) {
try {
in.close();
} catch (java.io.IOException e) {
}
}
}
return returnCode;
}
private static int checkIfWellFormed(InputSource inputSource, List errorList) {
int result;
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
spf.setValidating(false);
SAXParser saxParser = spf.newSAXParser();
WellfomednessChecker wc = new WellfomednessChecker(errorList);
wc.setEntityResolver(new Log4jEntityResolver());
saxParser.parse(inputSource, wc);
result = WELL_FORMED;
} catch(org.xml.sax.SAXParseException se) {
result = ILL_FORMED;
} catch (Exception ex) {
errorList.add(
new ErrorItem("Problem while checking well-formedness", ex));
result = UNRECOVERABLE_ERROR;
}
return result;
}
}