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package org.apache.catalina.ant;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.URL;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import com.sun.org.apache.commons.digester.Digester;
import org.xml.sax.InputSource;
import org.apache.catalina.startup.Constants;
import org.apache.catalina.startup.ContextConfig;
/**
* Task for validating a web application deployment descriptor, using XML
* schema validation.
*
* @author Remy Maucherat
* @version $Revision: 1.4.6.1 $ $Date: 2008/04/17 18:37:03 $
* @since 5.0
*/
public class ValidatorTask extends Task {
// ----------------------------------------------------- Instance Variables
// ------------------------------------------------------------- Properties
/**
* The path to the webapp directory.
*/
protected String path = null;
public String getPath() {
return (this.path);
}
public void setPath(String path) {
this.path = path;
}
// --------------------------------------------------------- Public Methods
/**
* Execute the specified command. This logic only performs the common
* attribute validation required by all subclasses; it does not perform
* any functional logic directly.
*
* @exception BuildException if a validation error occurs
*/
public void execute() throws BuildException {
if (path == null) {
throw new BuildException("Must specify 'path'");
}
File file = new File(path, Constants.ApplicationWebXml);
if ((!file.exists()) || (!file.canRead())) {
throw new BuildException("Cannot find web.xml");
}
Digester digester = ContextConfig.createWebXmlDigester(true, true);
try {
file = file.getCanonicalFile();
InputStream stream =
new BufferedInputStream(new FileInputStream(file));
InputSource is = new InputSource(file.toURL().toExternalForm());
is.setByteStream(stream);
digester.parse(is);
} catch (Throwable t) {
throw new BuildException("Validation failure", t);
}
}
}