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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.ant;
import org.apache.tools.ant.*;
import org.apache.tools.ant.types.*;
import proguard.*;
import proguard.util.ListUtil;
import java.io.*;
import java.util.Properties;
/**
* This DataType represents a reference to an XML-style ProGuard configuration
* in Ant, or a file set of ProGuard-style configuration files.
*
* @author Eric Lafortune
*/
public class ConfigurationElement extends FileSet
{
/**
* Adds the contents of this configuration element to the given
* configuration.
* @param configuration the configuration to be extended.
*/
public void appendTo(Configuration configuration)
{
File baseDir;
String[] fileNames;
if (isReference())
{
// Get the referenced path or file set.
Object referencedObject = getCheckedRef(Object.class,
Object.class.getName());
if (referencedObject instanceof ConfigurationTask)
{
// The reference doesn't point to a file set, but to a
// configuration task.
ConfigurationTask configurationTask =
(ConfigurationTask)referencedObject;
// Append the contents of the referenced configuration to the
// current configuration.
configurationTask.appendTo(configuration);
return;
}
else if (referencedObject instanceof AbstractFileSet)
{
AbstractFileSet fileSet = (AbstractFileSet)referencedObject;
// Get the names of the existing input files in the referenced file set.
DirectoryScanner scanner = fileSet.getDirectoryScanner(getProject());
baseDir = scanner.getBasedir();
fileNames = scanner.getIncludedFiles();
}
else
{
throw new BuildException("The refid attribute doesn't point to a <proguardconfiguration> element or a <fileset> element");
}
}
else
{
// Get the names of the existing input files in the referenced file set.
DirectoryScanner scanner = getDirectoryScanner(getProject());
baseDir = scanner.getBasedir();
fileNames = scanner.getIncludedFiles();
}
// Get the combined system properties and Ant properties, for
// replacing ProGuard-style properties ('<...>').
Properties properties = new Properties();
properties.putAll(getProject().getProperties());
try
{
// Append the contents of the configuration files to the current
// configuration.
for (int index = 0; index < fileNames.length; index++)
{
File configurationFile = new File(baseDir, fileNames[index]);
ConfigurationParser parser =
new ConfigurationParser(configurationFile, properties);
try
{
parser.parse(configuration);
}
catch (ParseException ex)
{
throw new BuildException(ex.getMessage());
}
finally
{
parser.close();
}
}
}
catch (IOException ex)
{
throw new BuildException(ex.getMessage());
}
}
}
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