/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.ant;
import java.io.File;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.engine.util.JRProperties;
import net.sf.jasperreports.engine.xml.JRXmlWriter;
import org.apache.tools.ant.AntClassLoader;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.taskdefs.MatchingTask;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.types.Resource;
import org.apache.tools.ant.types.resources.FileResource;
import org.apache.tools.ant.util.RegexpPatternMapper;
import org.apache.tools.ant.util.SourceFileScanner;
/**
* Ant task for batch-generating the source JRXML report design files, from compiled report template files.
* Works like the built-in <code>javac</code> Ant task.
* <p>
* This task can take the following arguments:
* <ul>
* <li>src
* <li>destdir
* </ul>
* Of these arguments, the <code>src</code> and <code>destdir</code> are required.
* When this task executes, it will recursively scan the <code>src</code> and
* <code>destdir</code> looking for compiled report template files and it will recreate
* the source JRXML file for each of them.
* This task makes its file creation decision based on timestamp and only input files
* that have no corresponding file in the target directory or where the destination JRXML file
* is older than the input file will be processed.
*
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRAntCompileTask.java 1606 2007-02-28 08:21:12Z lucianc $
*/
public class JRAntDecompileTask extends MatchingTask
{
/**
*
*/
private Path src = null;
private File destdir = null;
private Path classpath = null;
private Map reportFilesMap = null;
/**
* Sets the source directories to find the compiled report design files.
*
* @param srcdir source path
*/
public void setSrcdir(Path srcdir)
{
if (src == null)
{
src = srcdir;
}
else
{
src.append(srcdir);
}
}
/**
* Adds a path for decompilation source.
*
* @return source path
*/
public Path createSrc()
{
if (src == null)
{
src = new Path(getProject());
}
return src.createPath();
}
/**
* Sets the destination directory into which the report design files should be decompilated.
*
* @param destdir destination directory
*/
public void setDestdir(File destdir)
{
this.destdir = destdir;
}
/**
* Adds a path to the classpath.
*
* @return classpath to use when decompiling the report
*/
public Path createClasspath()
{
if (classpath == null)
{
classpath = new Path(getProject());
}
return classpath.createPath();
}
/**
* Executes the task.
*/
public void execute() throws BuildException
{
checkParameters();
reportFilesMap = new HashMap();
JRProperties.backupProperties();
try
{
AntClassLoader classLoader = null;
if (classpath != null)
{
JRProperties.setProperty(JRProperties.COMPILER_CLASSPATH, String.valueOf(classpath));
ClassLoader parentClassLoader = getClass().getClassLoader();
classLoader = new AntClassLoader(parentClassLoader, getProject(), classpath, true);
classLoader.setThreadContextLoader();
}
try
{
/* */
scanSrc();
/* */
decompile();
}
finally
{
if (classLoader != null)
{
classLoader.resetThreadContextLoader();
}
}
}
finally
{
JRProperties.restoreProperties();
}
}
/**
* Checks that all required attributes have been set and that the supplied values are valid.
*/
protected void checkParameters() throws BuildException
{
if (src == null || src.size() == 0)
{
throw
new BuildException(
"The srcdir attribute must be set.", //FIXME this message is misleading in case the fileset filters do not match any file
getLocation()
);
}
if (destdir != null && !destdir.isDirectory())
{
throw
new BuildException(
"The destination directory \""
+ destdir
+ "\" does not exist "
+ "or is not a directory.",
getLocation()
);
}
}
/**
* Scans the source directories looking for source files to be decompiled.
*/
protected void scanSrc() throws BuildException
{
for(Iterator it = src.iterator(); it.hasNext();)
{
Resource resource = (Resource)it.next();
FileResource fileResource = resource instanceof FileResource ? (FileResource)resource : null;
if (fileResource != null)
{
File file = fileResource.getFile();
if (file.isDirectory())
{
DirectoryScanner ds = getDirectoryScanner(file);
String[] files = ds.getIncludedFiles();
scanDir(file, destdir != null ? destdir : file, files);
}
else
{
String[] files = new String[]{fileResource.getName()};
scanDir(fileResource.getBaseDir(), destdir != null ? destdir : fileResource.getBaseDir(), files);
}
}
// else
// {
// //FIXME what to do?
// }
}
}
/**
* Scans the directory looking for source files to be decompiled.
* The results are returned in the instance variable <code>reportFilesMap</code>.
*
* @param srcdir source directory
* @param destdir destination directory
* @param files included file names
*/
protected void scanDir(File srcdir, File destdir, String[] files)
{
RegexpPatternMapper mapper = new RegexpPatternMapper();
mapper.setFrom("^(.*)\\.(.*)$");
mapper.setTo("\\1.jasper.jrxml");
SourceFileScanner scanner = new SourceFileScanner(this);
String[] newFiles = scanner.restrict(files, srcdir, destdir, mapper);
if (newFiles != null && newFiles.length > 0)
{
for (int i = 0; i < newFiles.length; i++)
{
reportFilesMap.put(
(new File(srcdir, newFiles[i])).getAbsolutePath(),
(new File(destdir, mapper.mapFileName(newFiles[i])[0])).getAbsolutePath()
);
}
}
}
/**
* Performs the decompilation of the selected report design files.
*/
protected void decompile() throws BuildException
{
Collection files = reportFilesMap.keySet();
if (files != null && files.size() > 0)
{
boolean isError = false;
System.out.println("Decompiling " + files.size() + " report design files.");
for (Iterator it = files.iterator(); it.hasNext();)
{
String srcFileName = (String)it.next();
String destFileName = (String)reportFilesMap.get(srcFileName);
File destFileParent = new File(destFileName).getParentFile();
if(!destFileParent.exists())
{
destFileParent.mkdirs();
}
try
{
System.out.print("File : " + srcFileName + " ... ");
JasperReport jasperReport = (JasperReport)JRLoader.loadObject(srcFileName);
JRXmlWriter.writeReport(jasperReport, destFileName, "UTF-8");
System.out.println("OK.");
}
catch(JRException e)
{
System.out.println("FAILED.");
System.out.println("Error decompiling report design : " + srcFileName);
e.printStackTrace(System.out);
isError = true;
}
}
if(isError)
{
throw new BuildException("Errors were encountered when decompiling report designs.");
}
}
}
}