/**
* Takes a packed-stream InputStream, and writes to a JarOutputStream. Internally the entire
* buffer must be read, it may be more efficient to read the packed-stream to a file and pass the
* File object, in the alternate method described below.
*
* <p>Closes its input but not its output. (The output can accumulate more elements.)
*
* @param in an InputStream.
* @param out a JarOutputStream.
* @exception IOException if an error is encountered.
*/
public void unpack(InputStream in0, JarOutputStream out) throws IOException {
assert (Utils.currentInstance.get() == null);
TimeZone tz = (_props.getBoolean(Utils.PACK_DEFAULT_TIMEZONE)) ? null : TimeZone.getDefault();
try {
Utils.currentInstance.set(this);
if (tz != null) TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
final int verbose = _props.getInteger(Utils.DEBUG_VERBOSE);
BufferedInputStream in = new BufferedInputStream(in0);
if (Utils.isJarMagic(Utils.readMagic(in))) {
if (verbose > 0) Utils.log.info("Copying unpacked JAR file...");
Utils.copyJarFile(new JarInputStream(in), out);
} else if (_props.getBoolean(Utils.DEBUG_DISABLE_NATIVE)) {
(new DoUnpack()).run(in, out);
in.close();
Utils.markJarFile(out);
} else {
(new NativeUnpack(this)).run(in, out);
in.close();
Utils.markJarFile(out);
}
} finally {
_nunp = null;
Utils.currentInstance.set(null);
if (tz != null) TimeZone.setDefault(tz);
}
}
public void run(BufferedInputStream in, JarOutputStream out) throws IOException {
if (verbose > 0) {
_props.list(System.out);
}
for (int seg = 1; ; seg++) {
unpackSegment(in, out);
// Try to get another segment.
if (!Utils.isPackMagic(Utils.readMagic(in))) break;
if (verbose > 0) Utils.log.info("Finished segment #" + seg);
}
}
public String toString() {
return Utils.getVersionString();
}
private void unpackSegment(InputStream in, JarOutputStream out) throws IOException {
_props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS, "0");
// Process the output directory or jar output.
new PackageReader(pkg, in).read();
if (_props.getBoolean("unpack.strip.debug")) pkg.stripAttributeKind("Debug");
if (_props.getBoolean("unpack.strip.compile")) pkg.stripAttributeKind("Compile");
_props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS, "50");
pkg.ensureAllClassFiles();
// Now write out the files.
HashSet classesToWrite = new HashSet(pkg.getClasses());
for (Iterator i = pkg.getFiles().iterator(); i.hasNext(); ) {
Package.File file = (Package.File) i.next();
String name = file.nameString;
JarEntry je = new JarEntry(Utils.getJarEntryName(name));
boolean deflate;
deflate =
(keepDeflateHint)
? (((file.options & Constants.FO_DEFLATE_HINT) != 0)
|| ((pkg.default_options & Constants.AO_DEFLATE_HINT) != 0))
: deflateHint;
boolean needCRC = !deflate; // STORE mode requires CRC
if (needCRC) crc.reset();
bufOut.reset();
if (file.isClassStub()) {
Package.Class cls = file.getStubClass();
assert (cls != null);
new ClassWriter(cls, needCRC ? crcOut : bufOut).write();
classesToWrite.remove(cls); // for an error check
} else {
// collect data & maybe CRC
file.writeTo(needCRC ? crcOut : bufOut);
}
je.setMethod(deflate ? JarEntry.DEFLATED : JarEntry.STORED);
if (needCRC) {
if (verbose > 0)
Utils.log.info("stored size=" + bufOut.size() + " and crc=" + crc.getValue());
je.setMethod(JarEntry.STORED);
je.setSize(bufOut.size());
je.setCrc(crc.getValue());
}
if (keepModtime) {
je.setTime(file.modtime);
// Convert back to milliseconds
je.setTime((long) file.modtime * 1000);
} else {
je.setTime((long) modtime * 1000);
}
out.putNextEntry(je);
bufOut.writeTo(out);
out.closeEntry();
if (verbose > 0) Utils.log.info("Writing " + Utils.zeString((ZipEntry) je));
}
assert (classesToWrite.isEmpty());
_props.setProperty(java.util.jar.Pack200.Unpacker.PROGRESS, "100");
pkg.reset(); // reset for the next segment, if any
}