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package Extract;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.zip.Adler32;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import Tools.Props;
/*
* Copyright 2009 Volker Oth
*
* 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.
*/
/**
* Extraction of resources.
*
* @author Volker Oth
*/
public class Extract extends Thread {
/** file name of extraction configuration */
final private static String iniName = "extract.ini";
/** file name of patching configuration */
final private static String patchIniName = "patch.ini";
/** file name of resource CRCs (WINLEMM) */
final private static String crcIniName = "crc.ini";
/** allows to use this module for creation of the CRC.ini */
final private static boolean doCreateCRC = false;
/** index for files to be checked - static since multiple runs are possible */
private static int checkNo = 0;
/** index for CRCs - static since multiple runs are possible */
private static int crcNo = 0;
/** index for files to be extracted - static since multiple runs are possible */
private static int extractNo = 0;
/** index for files to be patched - static since multiple runs are possible */
private static int patchNo = 0;
/** array of extensions to be ignored - read from ini */
private static String ignoreExt[] = {null};
/** output dialog */
private static OutputDialog outputDiag;
/** monitor the files created without erasing the target dir */
private static HashMap<String,Object> createdFiles;
/** source path (WINLEMM) for extraction */
private static String sourcePath;
/** destination path (Lemmini resource) for extraction */
private static String destinationPath;
/** reference path for creation of DIF files */
private static String referencePath;
/** path of the DIF files */
private static String patchPath;
/** path of the CRC ini (without the file name) */
private static String crcPath;
/** exception caught in the thread */
private static ExtractException threadException = null;
/** static self reference to access thread from outside */
private static Thread thisThread;
/** reference to class loader */
private static ClassLoader loader;
/**
* Display an exception message box.
* @param ex Exception
*/
private static void showException(final Throwable ex) {
String m;
m = "<html>";
m += ex.getClass().getName()+"<p>";
if (ex.getMessage() != null)
m += ex.getMessage() +"<p>";
StackTraceElement ste[] = ex.getStackTrace();
for (int i=0; i<ste.length; i++) {
m += ste[i].toString()+"<p>";
}
m += "</html>";
ex.printStackTrace();
JOptionPane.showMessageDialog( null, m, "Error", JOptionPane.ERROR_MESSAGE );
ex.printStackTrace();
}
/* (non-Javadoc)
* @see java.lang.Thread#run()
*
* Extraction running in a Thread.
*/
@Override
public void run() {
createdFiles = new HashMap<String,Object>(); // to monitor the files created without erasing the target dir
try {
// read ini file
Props props = new Props();
URL fn = findFile(iniName);
if (fn==null || !props.load(fn))
throw new ExtractException("File " + iniName + " not found or error while reading");
ignoreExt = props.get("ignore_ext", ignoreExt);
// prolog_ check CRC
out("\nValidating WINLEMM");
URL fncrc = findFile(crcIniName);
Props cprops = new Props();
if (fncrc==null || !cprops.load(fncrc))
throw new ExtractException("File " + crcIniName + " not found or error while reading");
for (int i=0; true; i++) {
String crcbuf[] = {null,null,null};
// 0: name, 1:size, 2: crc
crcbuf = cprops.get("crc_"+Integer.toString(i),crcbuf);
if (crcbuf[0] == null)
break;
out(crcbuf[0]);
long len = new File(sourcePath+crcbuf[0]).length();
if (len != Long.parseLong(crcbuf[1]))
throw new ExtractException("CRC error for file "+sourcePath+crcbuf[0]+".\n");
byte src[] = readFile(sourcePath+crcbuf[0]);
Adler32 crc32 = new Adler32();
crc32.update(src);
if (Long.toHexString(crc32.getValue()).compareToIgnoreCase(crcbuf[2].substring(2))!=0)
throw new ExtractException("CRC error for file "+sourcePath+crcbuf[0]+".\n");
checkCancel();
}
// step one: extract the levels
out("\nExtracting levels");
for (int i=0; true; i++) {
String lvls[] = {null,null};
// 0: srcPath, 1: destPath
lvls = props.get("level_"+Integer.toString(i),lvls);
if (lvls[0] == null)
break;
extractLevels(sourcePath+lvls[0], destinationPath+lvls[1]);
checkCancel();
}
// step two: extract the styles
out("\nExtracting styles");
ExtractSPR sprite = new ExtractSPR();
for (int i=0; true; i++) {
String styles[] = {null,null,null,null};
// 0:SPR, 1:PAL, 2:path, 3:fname
styles = props.get("style_"+Integer.toString(i),styles);
if (styles[0] == null)
break;
out(styles[3]);
File dest = new File(destinationPath+styles[2]);
dest.mkdirs();
// load palette and sprite
sprite.loadPalette(sourcePath+styles[1]);
sprite.loadSPR(sourcePath+styles[0]);
String files[] = sprite.saveAll(destinationPath+addSeparator(styles[2])+styles[3], false);
for (int j=0; j<files.length; j++)
createdFiles.put(files[j].toLowerCase(),null);
checkCancel();
}
// step three: extract the objects
out("\nExtracting objects");
for (int i=0; true; i++) {
String object[] = {null,null,null,null};
// 0:SPR, 1:PAL, 2:resource, 3:path
object = props.get("objects_"+Integer.toString(i),object);
if (object[0] == null)
break;
out(object[0]);
File dest = new File(destinationPath+object[3]);
dest.mkdirs();
// load palette and sprite
sprite.loadPalette(sourcePath+object[1]);
sprite.loadSPR(sourcePath+object[0]);
for (int j=0; true; j++) {
String member[] = {null,null,null};
// 0:idx, 1:frames, 2:name
member = props.get(object[2]+"_"+Integer.toString(j),member);
if (member[0] == null)
break;
// save object
createdFiles.put((destinationPath+addSeparator(object[3])+member[2]).toLowerCase(),null);
sprite.saveAnim(destinationPath+addSeparator(object[3])+member[2],
Integer.parseInt(member[0]),Integer.parseInt(member[1]) );
checkCancel();
}
}
//if (false) { // debug only
// step four: create directories
out("\nCreate directories");
for (int i=0; true; i++) {
// 0: path
String path = props.get("mkdir_"+Integer.toString(i),"");
if (path.length() == 0)
break;
out(path);
File dest = new File(destinationPath+path);
dest.mkdirs();
checkCancel();
}
// step five: copy stuff
out("\nCopy files");
for (int i=0; true; i++) {
String copy[] = {null,null};
// 0: srcName, 1: destName
copy = props.get("copy_"+Integer.toString(i),copy);
if (copy[0] == null)
break;
try {
copyFile(sourcePath+copy[0], destinationPath+copy[1]);
createdFiles.put((destinationPath+copy[1]).toLowerCase(),null);
} catch (Exception ex) {
throw new ExtractException("Copying "+sourcePath+copy[0]+" to "+destinationPath+copy[1]+ " failed");
}
checkCancel();
}
// step five: clone files inside destination dir
out("\nClone files");
for (int i=0; true; i++) {
String clone[] = {null,null};
// 0: srcName, 1: destName
clone = props.get("clone_"+Integer.toString(i),clone);
if (clone[0] == null)
break;
try {
copyFile(destinationPath+clone[0], destinationPath+clone[1]);
createdFiles.put((destinationPath+clone[1]).toLowerCase(),null);
} catch (Exception ex) {
throw new ExtractException("Cloning "+destinationPath+clone[0]+" to "+destinationPath+clone[1]+ " failed");
}
checkCancel();
}
if (referencePath != null) {
// this is not needed by Lemmini, but to create the DIF files (and CRCs)
if (doCreateCRC) {
// create crc.ini
out("\nCreate CRC ini");
FileWriter fCRCList;
try {
fCRCList = new FileWriter(crcPath+crcIniName);
} catch (IOException ex) {
throw new ExtractException(crcPath+crcIniName+" coudn't be openend");
}
for (int i=0; true; i++) {
String ppath;
ppath = props.get("pcrc_"+Integer.toString(i),"");
if (ppath.length() == 0)
break;
createCRCs(sourcePath, ppath, fCRCList);
}
try {
fCRCList.close();
} catch (IOException ex) {
throw new ExtractException(crcPath+crcIniName+" coudn't be closed");
}
checkCancel();
}
// step seven: create patches and patch.ini
(new File(patchPath)).mkdirs();
out("\nCreate patch ini");
FileWriter fPatchList;
try {
fPatchList = new FileWriter(patchPath+patchIniName);
} catch (IOException ex) {
throw new ExtractException(patchPath+patchIniName+" coudn't be openend");
}
for (int i=0; true; i++) {
String ppath;
ppath = props.get("ppatch_"+Integer.toString(i),"");
if (ppath.length() == 0)
break;
createPatches(referencePath, destinationPath, ppath, patchPath, fPatchList);
}
try {
fPatchList.close();
} catch (IOException ex) {
throw new ExtractException(patchPath+patchIniName+" coudn't be closed");
}
checkCancel();
}
// step eight: use patch.ini to extract/patch all files
// read patch.ini file
Props pprops = new Props();
URL fnp = findFile(patchPath+patchIniName/*, this*/); // if it's in the JAR or local directory
if (!pprops.load(fnp))
throw new ExtractException("File " + patchIniName + " not found or error while reading");
// copy
out("\nExtract files");
for (int i=0; true; i++) {
String copy[] = {null,null};
// 0: name 1: crc
copy = pprops.get("extract_"+Integer.toString(i),copy);
if (copy[0] == null)
break;
out(copy[0]);
String fnDecorated = copy[0].replace('/', '@');
URL fnc = findFile(patchPath+fnDecorated /*, pprops*/);
try {
copyFile(fnc, destinationPath+copy[0]);
} catch (Exception ex) {
throw new ExtractException("Copying "+patchPath+getFileName(copy[0])+" to "+destinationPath+copy[0]+ " failed");
}
checkCancel();
}
// patch
out("\nPatch files");
for (int i=0; true; i++) {
String ppath[] = {null,null};
// 0: name 1: crc
ppath = pprops.get("patch_"+Integer.toString(i),ppath);
if (ppath[0] == null)
break;
out(ppath[0]);
String fnDif = ppath[0].replace('/', '@'); //getFileName(ppath[0]);
int pos = fnDif.toLowerCase().lastIndexOf('.');
if (pos == -1)
pos = fnDif.length();
fnDif = fnDif.substring(0,pos)+".dif";
URL urlDif = findFile(patchPath+fnDif);
if (urlDif == null)
throw new ExtractException("Patching of file "+destinationPath+ppath[0]+" failed.\n");
byte dif[] = readFile(urlDif);
byte src[] = readFile(destinationPath+ppath[0]);
try {
byte trg[] = Diff.patchbuffers(src, dif);
// write new file
writeFile(destinationPath+ppath[0],trg);
} catch (DiffException ex) {
throw new ExtractException("Patching of file "+destinationPath+ppath[0]+" failed.\n"+
ex.getMessage());
}
checkCancel();
}
//} // debug only
// finished
out("\nSuccessfully finished!");
} catch (ExtractException ex) {
threadException = ex;
out(ex.getMessage());
} catch (Exception ex) {
showException(ex);
System.exit(1);
} catch (Error ex) {
showException(ex);
System.exit(1);
}
outputDiag.enableOk();
}
/**
* Get source path (WINLEMM) for extraction.
* @return source path (WINLEMM) for extraction
*/
public static String getSourcePath() {
return sourcePath;
}
/**
* Get destination path (Lemmini resource) for extraction.
* @return destination path (Lemmini resource) for extraction
*/
public static String getResourcePath() {
return destinationPath;
}
/**
* Extract all resources and create patch.ini if referencePath is not null
* @param frame parent frame
* @param srcPath WINLEMM directory
* @param dstPath target (installation) directory. May also be a relative path inside JAR
* @param refPath the reference path with the original (wanted) files
* @param pPath the path to store the patch files to
* @throws ExtractException
*/
public static void extract(final JFrame frame, final String srcPath, final String dstPath, final String refPath, final String pPath) throws ExtractException {
sourcePath = exchangeSeparators(addSeparator(srcPath));
destinationPath = exchangeSeparators(addSeparator(dstPath));
if (refPath != null)
referencePath = exchangeSeparators(addSeparator(refPath));
patchPath = exchangeSeparators(addSeparator(pPath));
crcPath = destinationPath; // ok, this is the wrong path, but this is executed once in a lifetime
loader = Extract.class.getClassLoader();
FolderDialog fDiag;
do {
fDiag = new FolderDialog(frame, true);
fDiag.setParameters(sourcePath, destinationPath);
fDiag.setVisible(true);
if (!fDiag.getSuccess())
throw new ExtractException("Extraction cancelled by user");
sourcePath = exchangeSeparators(addSeparator(fDiag.getSource()));
destinationPath = exchangeSeparators(addSeparator(fDiag.getTarget()));
// check if source path exists
File fSrc = new File(sourcePath);
if (fSrc.exists())
break;
JOptionPane.showMessageDialog(frame,"Source path "+sourcePath+" doesn't exist!","Error",JOptionPane.ERROR_MESSAGE);
} while (true);
// open output dialog
outputDiag = new OutputDialog(frame, true);
// start thread
threadException = null;
thisThread = new Thread(new Extract());
thisThread.start();
outputDiag.setVisible(true);
while (thisThread.isAlive()) {
try {
Thread.sleep(200);
} catch (InterruptedException ex) {}
}
if (threadException != null)
throw threadException;
}
/**
* Extract the level INI files from LVL files
* @param r name of root folder (source of LVL files)
* @param dest destination folder for extraction (resource folder)
* @throws ExtractException
*/
private static void extractLevels(final String r, final String destin) throws ExtractException {
// first extract the levels
File fRoot = new File(r);
FilenameFilter ff = new LvlFilter();
String root = addSeparator(r);
String destination = addSeparator(destin);
File dest = new File(destination);
dest.mkdirs();
File[] levels = fRoot.listFiles(ff);
if (levels == null)
throw new ExtractException("Path "+root+" doesn't exist or IO error occured.");
for (int i = 0; i< levels.length; i++) {
int pos;
String fIn = root + levels[i].getName();
String fOut = levels[i].getName();
pos = fOut.toLowerCase().indexOf(".lvl"); // MUST be there because of file filter
fOut = destination + (fOut.substring(0,pos)+".ini").toLowerCase();
createdFiles.put(fOut.toLowerCase(),null);
try {
out(levels[i].getName());
ExtractLevel.convertLevel(fIn, fOut);
} catch (Exception ex) {
String msg = ex.getMessage();
if (msg!=null && msg.length()>0)
out(ex.getMessage());
else
out(ex.toString());
throw new ExtractException(msg);
}
}
}
/**
* Create the DIF files from reference files and the extracted files (development).
* @param sPath The path with the original (wanted) files
* @param dPath The patch with the differing (to be patched) files
* @param subDir SubDir to create patches for
* @param pPath The patch to write the patches to
* @param fPatchList FileWriter to create patch.ini
* @throws ExtractException
*/
private static void createPatches(final String sPath, final String dPath, final String sDir, final String pPath, final FileWriter fPatchList) throws ExtractException {
// add separators and create missing directories
sourcePath = addSeparator(sPath+sDir);
File fSource = new File(sourcePath);
String destPath = addSeparator(dPath+sDir);
File fDest = new File(destPath);
fDest.mkdirs();
String out;
patchPath = addSeparator(pPath);
File fPatch = new File(patchPath);
fPatch.mkdirs();
File[] files = fSource.listFiles();
if (files == null)
throw new ExtractException("Path "+sourcePath+" doesn't exist or IO error occured.");
Diff.setParameters(512,4);
String subDir = addSeparator(sDir);
String subDirDecorated = subDir.replace('/', '@');
outerLoop:
for (int i = 0; i< files.length; i++) {
int pos;
// ignore directories
if (files[i].isDirectory())
continue;
// check extension
pos = files[i].getName().lastIndexOf('.');
if (pos > -1) {
String ext = files[i].getName().substring(pos+1);
for (int n=0; n<ignoreExt.length; n++)
if (ignoreExt[n].equalsIgnoreCase(ext))
continue outerLoop;
}
String fnIn = sourcePath + files[i].getName();
String fnOut = destPath + files[i].getName();
String fnPatch = files[i].getName();
pos = fnPatch.toLowerCase().lastIndexOf('.');
if (pos == -1)
pos = fnPatch.length();
fnPatch = patchPath + subDirDecorated + (fnPatch.substring(0,pos)+".dif").toLowerCase();
try {
out(fnIn);
// read src file
byte src[] = readFile(fnIn);
byte trg[] = null;
// read target file
boolean fileExists;
if (createdFiles.containsKey(fnOut.toLowerCase()))
fileExists = true;
else
fileExists = false;
if (fileExists) {
try {
trg = readFile(fnOut);
} catch (ExtractException ex) {
fileExists = false;
}
}
if (!fileExists) {
// mark missing files: needs to be extracted from JAR
Adler32 crc = new Adler32();
crc.update(src);
out = subDir+files[i].getName()+", 0x"+Integer.toHexString((int)crc.getValue());
fPatchList.write("extract_"+(Integer.toString(extractNo++))+" = "+out+"\n");
// copy missing files to patch dir
copyFile(fnIn, patchPath + subDirDecorated + files[i].getName());
continue;
}
// create diff
byte patch[] = Diff.diffBuffers(trg,src);
int crc = Diff.targetCRC; // crc of target buffer
out = subDir+files[i].getName()+", 0x"+Integer.toHexString(crc);
if (patch == null) {
//out("src and trg are identical");
fPatchList.write("check_"+(Integer.toString(checkNo++))+" = "+out+"\n");
}
else {
// apply patch to test it's ok
Diff.patchbuffers(trg,patch);
// write patch file
writeFile( fnPatch, patch);
fPatchList.write("patch_"+(Integer.toString(patchNo++))+" = "+out+"\n");
}
} catch (Exception ex) {
String msg = ex.getMessage();
if (msg == null)
msg = ex.toString();
throw new ExtractException(ex.getMessage());
}
}
}
/**
* Create CRCs for resources (development).
* @param rPath The root path with the files to create CRCs for
* @param sDir SubDir to create patches for
* @param fCRCList FileWriter to create crc.ini
* @throws ExtractException
*/
private static void createCRCs(final String rPath, final String sDir, final FileWriter fCRCList) throws ExtractException {
// add separators and create missing directories
String rootPath = addSeparator(rPath+sDir);
File fSource = new File(rootPath);
String out;
File[] files = fSource.listFiles();
if (files == null)
throw new ExtractException("Path "+rootPath+" doesn't exist or IO error occured.");
String subDir = addSeparator(sDir);
outerLoop:
for (int i = 0; i< files.length; i++) {
int pos;
// ignore directories
if (files[i].isDirectory())
continue;
// check extension
pos = files[i].getName().lastIndexOf('.');
if (pos > -1) {
String ext = files[i].getName().substring(pos+1);
for (int n=0; n<ignoreExt.length; n++)
if (ignoreExt[n].equalsIgnoreCase(ext))
continue outerLoop;
}
String fnIn = rootPath + files[i].getName();
try {
out(fnIn);
// read src file
byte src[] = readFile(fnIn);
Adler32 crc32 = new Adler32();
crc32.update(src);
out = subDir+files[i].getName()+", "+src.length+", 0x"+Long.toHexString(crc32.getValue());
fCRCList.write("crc_"+(Integer.toString(crcNo++))+" = "+out+"\n");
} catch (Exception ex) {
String msg = ex.getMessage();
if (msg == null)
msg = ex.toString();
throw new ExtractException(ex.getMessage());
}
}
}
/**
* Add separator "/" to path name (if there isn't one yet)
* @param fName path name with or without separator
* @return path name with separator
*/
private static String addSeparator(final String fName) {
int pos = fName.lastIndexOf(File.separator);
if (pos != fName.length()-1)
pos = fName.lastIndexOf("/");
if (pos != fName.length()-1)
return fName + "/";
else return fName;
}
/**
* Exchange all Windows style file separators ("\") with Unix style seaparators ("/")
* @param fName file name
* @return file name with only Unix style separators
*/
private static String exchangeSeparators(final String fName) {
int pos;
StringBuffer sb = new StringBuffer(fName);
while ( (pos = sb.indexOf("\\")) != -1 )
sb.setCharAt(pos,'/');
return sb.toString();
}
/**
* Get only the name of the file from an absolute path.
* @param path absolute path of a file
* @return file name without the path
*/
private static String getFileName(final String path) {
int p1 = path.lastIndexOf("/");
int p2 = path.lastIndexOf("\\");
if (p2 > p1)
p1 = p2;
if (p1 < 0)
p1 = 0;
else
p1++;
return path.substring(p1);
}
/**
* Copy a file.
* @param source URL of source file
* @param destination full destination file name including path
* @throws FileNotFoundException
* @throws IOException
*/
private static void copyFile(final URL source, final String destination) throws FileNotFoundException, IOException {
InputStream fSrc = source.openStream();
FileOutputStream fDest = new FileOutputStream(destination);
byte buffer[] = new byte[4096];
int len;
while ( (len=fSrc.read(buffer)) != -1)
fDest.write(buffer,0,len);
fSrc.close();
fDest.close();
}
/**
* Copy a file.
* @param source full source file name including path
* @param destination full destination file name including path
* @throws FileNotFoundException
* @throws IOException
*/
private static void copyFile(final String source, final String destination) throws FileNotFoundException, IOException {
FileInputStream fSrc = new FileInputStream(source);
FileOutputStream fDest = new FileOutputStream(destination);
byte buffer[] = new byte[4096];
int len;
while ( (len=fSrc.read(buffer)) != -1)
fDest.write(buffer,0,len);
fSrc.close();
fDest.close();
}
/**
* Read file into an array of byte.
* @param fname file name
* @return array of byte
* @throws ExtractException
*/
private static byte[] readFile(final String fname) throws ExtractException {
byte buf[] = null;
try {
int len = (int)(new File(fname).length());
FileInputStream f = new FileInputStream(fname);
buf = new byte[ len ];
f.read( buf );
f.close();
return buf;
} catch (FileNotFoundException ex) {
throw new ExtractException("File "+fname+" not found");
} catch (IOException ex) {
throw new ExtractException("IO exception while reading file "+fname);
}
}
/**
* Read file into an array of byte.
* @param fname file name as URL
* @return array of byte
* @throws ExtractException
*/
private static byte[] readFile(final URL fname) throws ExtractException {
byte buf[] = null;
try {
InputStream f = fname.openStream();
byte buffer[] = new byte[4096];
// URLs/InputStreams suck: we can't read a length
int len;
ArrayList<Byte> lbuf = new ArrayList<Byte>();
while ( (len=f.read(buffer)) != -1) {
for (int i=0; i<len; i++)
lbuf.add(new Byte(buffer[i]));
}
f.close();
// reconstruct byte array from ArrayList
buf = new byte[lbuf.size()];
for (int i=0; i<lbuf.size(); i++)
buf[i] = lbuf.get(i).byteValue();
return buf;
} catch (FileNotFoundException ex) {
throw new ExtractException("File "+fname+" not found");
} catch (IOException ex) {
throw new ExtractException("IO exception while reading file "+fname);
}
}
/**
* Write array of byte to file.
* @param fname file name
* @param buf array of byte
* @throws ExtractException
*/
private static void writeFile(final String fname, final byte buf[]) throws ExtractException {
try {
FileOutputStream f = new FileOutputStream(fname);
f.write( buf );
f.close();
} catch (IOException ex) {
throw new ExtractException("IO exception while writing file "+fname);
}
}
/**
* Find a file.
* @param fname File name (without absolute path)
* @return URL to file
*/
public static URL findFile(final String fname) {
URL retval = loader.getResource(fname);
try {
if (retval==null)
retval = new File(fname).toURI().toURL();
return retval;
} catch (MalformedURLException ex) {}
return null;
}
/**
* Print string to output dialog.
* @param s string to print
*/
private static void out(final String s) {
// System.out.println(s);
if (outputDiag != null)
outputDiag.print(s+"\n");
}
/**
* Return cancel state of output dialog
* @throws ExtractException
*/
private static void checkCancel() throws ExtractException {
if (outputDiag.isCancelled())
throw new ExtractException("Extraction cancelled by user");
}
}
/**
* File name filter for level files.
* @author Volker Oth
*/
class LvlFilter implements FilenameFilter {
/* (non-Javadoc)
* @see java.io.FilenameFilter#accept(java.io.File, java.lang.String)
*/
public boolean accept(final File dir, final String name) {
if (name.toLowerCase().indexOf(".lvl") != -1)
return true;
else
return false;
}
}
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