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git-svn-id: svn://svn.code.sf.net/p/writer2latex/code/trunk@5 f0f2a975-2e09-46c8-9428-3b39399b9f3c
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henrikjust 2009-02-20 09:37:06 +00:00
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source/java/writer2latex/base/BatchConverterBase.java Normal file
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/************************************************************************
*
* BatchConverterBase.java
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Copyright: 2002-2008 by Henrik Just
*
* All Rights Reserved.
*
* Version 1.0 (2008-10-15)
*
*/
package writer2latex.base;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import writer2latex.api.BatchConverter;
import writer2latex.api.BatchHandler;
import writer2latex.api.Converter;
import writer2latex.api.ConverterResult;
import writer2latex.api.IndexPageEntry;
import writer2latex.api.OutputFile;
import writer2latex.util.Misc;
/**
* Abstract base implementation of <code>writer2latex.api.BatchConverter</code>.
* The base implementation handles the traversal of directories and files, and
* leaves the handling of indexpages to the subclass.
*/
public abstract class BatchConverterBase implements BatchConverter {
private Converter converter;
public BatchConverterBase() {
converter = null;
}
// Partial implementation of the interface
public void setConverter(Converter converter) {
this.converter = converter;
}
public void convert(File source, File target, boolean bRecurse, BatchHandler handler) {
handler.startConversion();
convertDirectory(source, target, bRecurse, source.getName(), handler);
handler.endConversion();
}
protected abstract String getIndexFileName();
// Convert files and directories in the directory indir
// (return false if conversion has been cancelled by the BatchHandler)
private boolean convertDirectory(File indir, File outdir, boolean bRecurse, String sHeading, BatchHandler handler) {
handler.startDirectory(indir.getPath());
// Step 1: Get the directory
File[] contents = indir.listFiles();
int nLen = contents.length;
IndexPageEntry[] entries = new IndexPageEntry[nLen];
// Step 2: Traverse subdirectories, if allowed
if (bRecurse) {
String sUplink = getConfig().getOption("uplink");
for (int i=0; i<nLen; i++) {
if (contents[i].isDirectory()) {
getConfig().setOption("uplink","../"+getIndexFileName());
File newOutdir = new File(outdir,contents[i].getName());
String sNewHeading = sHeading + " - " + contents[i].getName();
boolean bResult = convertDirectory(contents[i],newOutdir,bRecurse,sNewHeading,handler);
getConfig().setOption("uplink", sUplink);
if (!bResult) { return false; }
// Create entry for this subdirectory
IndexPageEntry entry = new IndexPageEntry(Misc.makeHref(contents[i].getName()+"/"+getIndexFileName()),true);
entry.setDisplayName(contents[i].getName());
entries[i]=entry;
}
}
}
// Step 3: Traverse documents, if we have a converter
if (converter!=null) {
String sUplink = getConfig().getOption("uplink");
for (int i=0; i<nLen; i++) {
if (contents[i].isFile()) {
getConfig().setOption("uplink",getIndexFileName());
String sLinkFile = convertFile(contents[i],outdir,handler);
getConfig().setOption("uplink", sUplink);
if (sLinkFile!=null) {
// Create entry for this file
IndexPageEntry entry = new IndexPageEntry(Misc.makeHref(sLinkFile),false);
entry.setDisplayName(Misc.removeExtension(sLinkFile));
entries[i]=entry;
if (handler.cancel()) { return false; }
}
}
}
}
// Step 4: Create and write out the index file
OutputFile indexFile = createIndexFile(sHeading, entries);
if (!outdir.exists()) { outdir.mkdirs(); }
boolean bSuccess = true;
File outfile = new File(outdir,indexFile.getFileName());
try {
FileOutputStream fos = new FileOutputStream(outfile);
indexFile.write(fos);
fos.flush();
fos.close();
} catch (Exception writeExcept) {
bSuccess = false;
}
handler.endDirectory(indir.getPath(), bSuccess);
return !handler.cancel();
}
// Convert a single file, returning the name of the master file
// Returns null if conversion fails
private String convertFile(File infile, File outdir, BatchHandler handler) {
handler.startFile(infile.getPath());
// Currently we discriminate based on file extension
if (!(infile.getName().endsWith(".odt") || infile.getName().endsWith(".ods") || infile.getName().endsWith(".odp"))) {
handler.endFile(infile.getPath(),false);
return null;
}
// Do conversion
ConverterResult dataOut = null;
try {
// The target file name is always the same as the source
dataOut = converter.convert(infile,Misc.removeExtension(infile.getName()));
}
catch (FileNotFoundException e) {
handler.endFile(infile.getPath(),false);
return null;
}
catch (IOException e) {
handler.endFile(infile.getPath(),false);
return null;
}
// Write out files
if (!outdir.exists()) { outdir.mkdirs(); }
try {
dataOut.write(outdir);
}
catch (IOException e) {
handler.endFile(infile.getPath(),false);
return null;
}
handler.endFile(infile.getPath(),true);
return dataOut.getMasterDocument().getFileName();
}
}