/**
* Closes the current tar entry
*
* @throws IOException
*/
protected void closeCurrentEntry() throws IOException {
if (currentEntry != null) {
if (currentEntry.getSize() > currentFileSize) {
throw new IOException(
"The current entry["
+ currentEntry.getName()
+ "] of size["
+ currentEntry.getSize()
+ "] has not been fully written.");
}
currentEntry = null;
currentFileSize = 0;
pad();
}
}
/**
* Checks if the bytes being written exceed the current entry size.
*
* @see java.io.FilterOutputStream#write(byte[], int, int)
*/
@Override
public void write(byte[] b, int off, int len) throws IOException {
if (currentEntry != null && !currentEntry.isDirectory()) {
if (currentEntry.getSize() < currentFileSize + len) {
throw new IOException(
"The current entry["
+ currentEntry.getName()
+ "] size["
+ currentEntry.getSize()
+ "] is smaller than the bytes["
+ (currentFileSize + len)
+ "] being written.");
}
}
out.write(b, off, len);
bytesWritten += len;
if (currentEntry != null) {
currentFileSize += len;
}
}
public boolean extractTar(String asset, String target) {
byte buf[] = new byte[1024 * 1024];
InputStream assetStream = null;
TarInputStream tis = null;
try {
assetStream = mAssetManager.open(asset, AssetManager.ACCESS_STREAMING);
tis =
new TarInputStream(
new BufferedInputStream(
new GZIPInputStream(new BufferedInputStream(assetStream, 8192)), 8192));
} catch (IOException e) {
Log.e("python", "opening up extract tar", e);
return false;
}
while (true) {
TarEntry entry = null;
try {
entry = tis.getNextEntry();
} catch (java.io.IOException e) {
Log.e("python", "extracting tar", e);
return false;
}
if (entry == null) {
break;
}
Log.i("python", "extracting " + entry.getName());
if (entry.isDirectory()) {
try {
new File(target + "/" + entry.getName()).mkdirs();
} catch (SecurityException e) {
}
;
continue;
}
OutputStream out = null;
String path = target + "/" + entry.getName();
try {
out = new BufferedOutputStream(new FileOutputStream(path), 8192);
} catch (FileNotFoundException e) {
} catch (SecurityException e) {
}
;
if (out == null) {
Log.e("python", "could not open " + path);
return false;
}
try {
while (true) {
int len = tis.read(buf);
if (len == -1) {
break;
}
out.write(buf, 0, len);
}
out.flush();
out.close();
} catch (java.io.IOException e) {
Log.e("python", "extracting zip", e);
return false;
}
}
try {
tis.close();
assetStream.close();
} catch (IOException e) {
// pass
}
return true;
}
