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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.tools.anttasks;
// Java
import java.io.File;
import java.io.IOException;
import java.io.ObjectOutputStream;
// Ant
import org.apache.tools.ant.taskdefs.MatchingTask;
import org.apache.tools.ant.DirectoryScanner;
// FOP
import org.apache.fop.hyphenation.HyphenationTree;
import org.apache.fop.hyphenation.HyphenationException;
/**
* SerializeHyphPattern
*/
public class SerializeHyphPattern extends MatchingTask {
private File sourceDir, targetDir;
private boolean errorDump = false;
/**
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws org.apache.tools.ant.BuildException {
DirectoryScanner ds = this.getDirectoryScanner(sourceDir);
String[] files = ds.getIncludedFiles();
for (int i = 0; i < files.length; i++) {
processFile(files[i].substring(0, files[i].length() - 4));
}
} // end execute
/**
* Sets the source directory.
* @param sourceDir source directory
*/
public void setSourceDir(String sourceDir) {
File dir = new File(sourceDir);
if (!dir.exists()) {
System.err.println("Fatal Error: source directory " + sourceDir
+ " for hyphenation files doesn't exist.");
System.exit(1);
}
this.sourceDir = dir;
}
/**
* Sets the target directory
* @param targetDir target directory
*/
public void setTargetDir(String targetDir) {
File dir = new File(targetDir);
this.targetDir = dir;
}
/**
* Controls the amount of error information dumped.
* @param errorDump True if more error info should be provided
*/
public void setErrorDump(boolean errorDump) {
this.errorDump = errorDump;
}
/*
* checks whether input or output files exists or the latter is older than input file
* and start build if necessary
*/
private void processFile(String filename) {
File infile = new File(sourceDir, filename + ".xml");
File outfile = new File(targetDir, filename + ".hyp");
//long outfileLastModified = outfile.lastModified();
boolean startProcess = true;
startProcess = rebuild(infile, outfile);
if (startProcess) {
buildPatternFile(infile, outfile);
}
}
/*
* serializes pattern files
*/
private void buildPatternFile(File infile, File outfile) {
System.out.println("Processing " + infile);
HyphenationTree hTree = new HyphenationTree();
try {
hTree.loadPatterns(infile.toString());
if (errorDump) {
System.out.println("Stats: ");
hTree.printStats();
}
} catch (HyphenationException ex) {
System.err.println("Can't load patterns from xml file " + infile
+ " - Maybe hyphenation.dtd is missing?");
if (errorDump) {
System.err.println(ex.toString());
}
}
// serialize class
try {
ObjectOutputStream out = new ObjectOutputStream(
new java.io.BufferedOutputStream(
new java.io.FileOutputStream(outfile)));
out.writeObject(hTree);
out.close();
} catch (IOException ioe) {
System.err.println("Can't write compiled pattern file: "
+ outfile);
System.err.println(ioe);
}
}
/**
* Checks for existence of output file and compares
* dates with input and stylesheet file
*/
private boolean rebuild(File infile, File outfile) {
if (outfile.exists()) {
// checks whether output file is older than input file
if (outfile.lastModified() < infile.lastModified()) {
return true;
}
} else {
// if output file does not exist, start process
return true;
}
return false;
} // end rebuild
/*
* //quick access for debugging
* public static void main (String args[]) {
* SerializeHyphPattern ser = new SerializeHyphPattern();
* ser.setIncludes("*.xml");
* ser.setSourceDir("\\xml-fop\\hyph\\");
* ser.setTargetDir("\\xml-fop\\hyph\\");
* ser.execute();
* }
*/
}
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