public static void run(File from, File to, JarProcessor proc, boolean ignoreDuplicates) throws IOException {
byte[] buf = new byte[0x2000];
JarFile in = new JarFile(from);
final File tmpTo = File.createTempFile("jarjar", ".jar");
JarOutputStream out = new JarOutputStream(new FileOutputStream(tmpTo));
Set<String> entries = new HashSet<String>();
try {
EntryStruct struct = new EntryStruct();
Enumeration<JarEntry> e = in.entries();
while (e.hasMoreElements()) {
JarEntry entry = e.nextElement();
struct.name = entry.getName();
struct.time = entry.getTime();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
IoUtil.pipe(in.getInputStream(entry), baos, buf);
struct.data = baos.toByteArray();
if (proc.process(struct)) {
if (entries.add(struct.name)) {
entry = new JarEntry(struct.name);
entry.setTime(struct.time);
entry.setCompressedSize(-1);
out.putNextEntry(entry);
out.write(struct.data);
} else if (struct.name.endsWith("/")) {
// TODO(chrisn): log
} else if (!ignoreDuplicates) {
throw new IllegalArgumentException("Duplicate jar entries: " + struct.name);
}
}
}
}
finally {
try {
in.close();
} catch (IOException e) {}
try {
out.close();
} catch (IOException e) {}
}
// delete the empty directories
IoUtil.copyZipWithoutEmptyDirectories(tmpTo, to);