/**
* lzma 解壓縮
*
* @param value
* @return
*/
public static byte[] unlzma(byte[] value) {
byte[] result = new byte[0];
//
ByteArrayInputStream in = null;
ByteArrayOutputStream out = null;
try {
Decoder decoder = new Decoder();
byte[] properties = new byte[5];
System.arraycopy(value, 0, properties, 0, 5);
if (properties.length != 5) {
throw new RuntimeException("input .lzma is too short");
}
decoder.SetDecoderProperties(properties);
//
int length = value.length - properties.length;
byte[] data = new byte[length];
System.arraycopy(value, properties.length, data, 0, length);
//
in = new ByteArrayInputStream(data);
out = new ByteArrayOutputStream();
decoder.Code(in, out, -1);
result = out.toByteArray();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
IoHelper.close(in);
IoHelper.close(out);
}
return result;
}
public void run() {
try {
for (Slice.FileData data = slice.readNextFile(); data != null; data = slice.readNextFile()) {
FileList.FileLocation file = data.file;
ByteArrayInputStream in = new ByteArrayInputStream(data.data);
decoder.SetDecoderProperties(data.props);
String fileName = destpath + "/" + file.fileName;
File f = new File(fileName);
f.getParentFile().mkdirs();
// check if we need to undo the tranformation on x86 executables
if ((file.fileName.contains(".exe")
|| file.fileName.contains(".dll"))) { // TODO there is an attribute for this
ByteArrayOutputStream out = new ByteArrayOutputStream();
decoder.Code(in, out, file.originalSize);
byte[] decompressedData = out.toByteArray();
Util.transformCallInstructions(decompressedData);
BufferedOutputStream outfile = new BufferedOutputStream(new FileOutputStream(f));
outfile.write(decompressedData);
outfile.close();
} else {
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f));
decoder.Code(in, out, file.originalSize);
out.close();
}
f.setLastModified(file.mtime.getTime());
ui.increaseProgress();
}
} catch (Exception e) {
ui.showError(e.getLocalizedMessage());
e.printStackTrace();
}
}
private static void extractLzmaToFile(InputStream srcStream, File destFile) throws IOException {
InputStream input = null;
OutputStream output = null;
try {
input = new BufferedInputStream(srcStream);
output = new BufferedOutputStream(new FileOutputStream(destFile));
byte[] properties = new byte[LZMA_PROP_SIZE];
if (input.read(properties, 0, LZMA_PROP_SIZE) != LZMA_PROP_SIZE) {
throw new IOException("Input lzma file is too short");
}
Decoder decoder = new Decoder();
if (!decoder.SetDecoderProperties(properties)) {
throw new IOException("Incorrect lzma properties");
}
long outSize = 0;
for (int i = 0; i < LZMA_OUTSIZE; i++) {
int v = input.read();
if (v < 0) {
Log.w(TAG, "Can't read stream size");
}
outSize |= ((long) v) << (8 * i);
}
if (!decoder.Code(input, output, outSize)) {
throw new IOException("Error in data stream");
}
} catch (IOException e) {
if (destFile.isFile()) destFile.delete();
throw e;
} finally {
try {
output.flush();
} catch (IOException | NullPointerException e) {
}
try {
output.close();
} catch (IOException | NullPointerException e) {
}
try {
input.close();
} catch (IOException | NullPointerException e) {
}
}
}
