/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.tools.ant.taskdefs;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.types.FilterChain;
import org.apache.tools.ant.filters.StringInputStream;
import org.apache.tools.ant.filters.util.ChainReaderHelper;
import java.io.File;
import java.io.FileInputStream;
import java.io.BufferedInputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Vector;
/**
* Load a file's contents as Ant properties.
*
* @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a>
* @since Ant 1.5
* @ant.task category="utility"
*/
public final class LoadProperties extends Task {
/**
* Source file
*/
private File srcFile = null;
/**
* Holds filterchains
*/
private final Vector filterChains = new Vector();
/**
* Sets the file to load.
*
* @param srcFile The new SrcFile value
*/
public final void setSrcFile(final File srcFile) {
this.srcFile = srcFile;
}
/**
* read in a source file's contents and load them up as Ant properties
*
* @exception BuildException if something goes wrong with the build
*/
public final void execute() throws BuildException {
//validation
if (srcFile == null) {
throw new BuildException("Source file not defined.");
}
if (!srcFile.exists()) {
throw new BuildException("Source file does not exist.");
}
if (!srcFile.isFile()) {
throw new BuildException("Source file is not a file.");
}
FileInputStream fis = null;
BufferedInputStream bis = null;
Reader instream = null;
try {
final long len = srcFile.length();
final int size = (int) len;
//open up the file
fis = new FileInputStream(srcFile);
bis = new BufferedInputStream(fis);
instream = new InputStreamReader(bis);
ChainReaderHelper crh = new ChainReaderHelper();
crh.setBufferSize(size);
crh.setPrimaryReader(instream);
crh.setFilterChains(filterChains);
crh.setProject(project);
instream = crh.getAssembledReader();
String text = crh.readFully(instream);
if (text != null) {
if (!text.endsWith("\n")) {
text = text + "\n";
}
final StringInputStream sis = new StringInputStream(text);
final Properties props = new Properties();
props.load(sis);
final Enumeration e = props.keys();
while (e.hasMoreElements()) {
final String key = (String) e.nextElement();
final String value = props.getProperty(key);
if (key != null && value != null
&& value.trim().length() > 0) {
project.setNewProperty(key, value);
}
}
sis.close();
}
} catch (final IOException ioe) {
final String message = "Unable to load file: " + ioe.toString();
throw new BuildException(message, ioe, location);
} catch (final BuildException be) {
throw be;
} finally {
try {
if (fis != null) {
fis.close();
}
} catch (IOException ioex) {
//ignore
}
}
}
/**
* Adds a FilterChain.
*/
public final void addFilterChain(FilterChain filter) {
filterChains.addElement(filter);
}
//end class
}