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/*
* 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.tools.ant.taskdefs;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.EnumeratedAttribute;
import org.apache.tools.ant.util.DOMElementWriter;
import org.apache.tools.ant.util.FileUtils;
import org.apache.tools.ant.util.XMLFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Echo XML.
*
* Known limitations:
* <ol>
* <li>Processing Instructions get ignored</li>
* <li>Encoding is always UTF-8</li>
* </ol>
*
* @since Ant 1.7
*/
public class EchoXML extends XMLFragment {
private File file;
private boolean append;
private NamespacePolicy namespacePolicy = NamespacePolicy.DEFAULT;
private static final String ERROR_NO_XML = "No nested XML specified";
/**
* Set the output file.
* @param f the output file.
*/
public void setFile(File f) {
file = f;
}
/**
* Set the namespace policy for the xml file
* @param n namespace policy: "ignore," "elementsOnly," or "all"
* @see
* org.apache.tools.ant.util.DOMElementWriter.XmlNamespacePolicy
*/
public void setNamespacePolicy(NamespacePolicy n) {
namespacePolicy = n;
}
/**
* Set whether to append the output file.
* @param b boolean append flag.
*/
public void setAppend(boolean b) {
append = b;
}
/**
* Execute the task.
*/
public void execute() {
DOMElementWriter writer =
new DOMElementWriter(!append, namespacePolicy.getPolicy());
OutputStream os = null;
try {
if (file != null) {
os = new FileOutputStream(file.getAbsolutePath(), append);
} else {
os = new LogOutputStream(this, Project.MSG_INFO);
}
Node n = getFragment().getFirstChild();
if (n == null) {
throw new BuildException(ERROR_NO_XML);
}
writer.write((Element) n, os);
} catch (BuildException e) {
throw e;
} catch (Exception e) {
throw new BuildException(e);
} finally {
FileUtils.close(os);
}
}
public static class NamespacePolicy extends EnumeratedAttribute {
private static final String IGNORE = "ignore";
private static final String ELEMENTS = "elementsOnly";
private static final String ALL = "all";
public static final NamespacePolicy DEFAULT
= new NamespacePolicy(IGNORE);
public NamespacePolicy() {}
public NamespacePolicy(String s) {
setValue(s);
}
/** {@inheritDoc}. */
@Override
public String[] getValues() {
return new String[] {IGNORE, ELEMENTS, ALL};
}
public DOMElementWriter.XmlNamespacePolicy getPolicy() {
String s = getValue();
if (IGNORE.equalsIgnoreCase(s)) {
return DOMElementWriter.XmlNamespacePolicy.IGNORE;
} else if (ELEMENTS.equalsIgnoreCase(s)) {
return
DOMElementWriter.XmlNamespacePolicy.ONLY_QUALIFY_ELEMENTS;
} else if (ALL.equalsIgnoreCase(s)) {
return DOMElementWriter.XmlNamespacePolicy.QUALIFY_ALL;
} else {
throw new BuildException("Invalid namespace policy: " + s);
}
}
}
}
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