/** Updates an existing jar file. */
boolean update(InputStream in, OutputStream out, InputStream newManifest, JarIndex jarIndex)
throws IOException {
ZipInputStream zis = new ZipInputStream(in);
ZipOutputStream zos = new JarOutputStream(out);
ZipEntry e = null;
boolean foundManifest = false;
boolean updateOk = true;
if (jarIndex != null) {
addIndex(jarIndex, zos);
}
// put the old entries first, replace if necessary
while ((e = zis.getNextEntry()) != null) {
String name = e.getName();
boolean isManifestEntry = equalsIgnoreCase(name, MANIFEST_NAME);
if ((jarIndex != null && equalsIgnoreCase(name, INDEX_NAME)) || (Mflag && isManifestEntry)) {
continue;
} else if (isManifestEntry && ((newManifest != null) || (ename != null) || (pname != null))) {
foundManifest = true;
if (newManifest != null) {
// Don't read from the newManifest InputStream, as we
// might need it below, and we can't re-read the same data
// twice.
FileInputStream fis = new FileInputStream(mname);
boolean ambiguous = isAmbiguousMainClass(new Manifest(fis));
fis.close();
if (ambiguous) {
return false;
}
}
// Update the manifest.
Manifest old = new Manifest(zis);
if (newManifest != null) {
old.read(newManifest);
}
if (!updateManifest(old, zos)) {
return false;
}
} else {
if (!entryMap.containsKey(name)) { // copy the old stuff
// do our own compression
ZipEntry e2 = new ZipEntry(name);
e2.setMethod(e.getMethod());
e2.setTime(e.getTime());
e2.setComment(e.getComment());
e2.setExtra(e.getExtra());
if (e.getMethod() == ZipEntry.STORED) {
e2.setSize(e.getSize());
e2.setCrc(e.getCrc());
}
zos.putNextEntry(e2);
copy(zis, zos);
} else { // replace with the new files
File f = entryMap.get(name);
addFile(zos, f);
entryMap.remove(name);
entries.remove(f);
}
}
}
// add the remaining new files
for (File f : entries) {
addFile(zos, f);
}
if (!foundManifest) {
if (newManifest != null) {
Manifest m = new Manifest(newManifest);
updateOk = !isAmbiguousMainClass(m);
if (updateOk) {
if (!updateManifest(m, zos)) {
updateOk = false;
}
}
} else if (ename != null || pname != null) {
if (!updateManifest(new Manifest(), zos)) {
updateOk = false;
}
}
}
zis.close();
zos.close();
return updateOk;
}
/**
* 取得压缩文件对象的注释
*
* @param entry 压缩文件对象
* @return 压缩文件对象的注释
* @throws UnsupportedEncodingException
*/
public static String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {
return new String(entry.getComment().getBytes("GB2312"), "8859_1");
}
protected void processJarFile(final File file) throws Exception {
if (verbose) {
log("processing " + file.toURI());
}
final File tempFile =
File.createTempFile(file.getName(), null, new File(file.getAbsoluteFile().getParent()));
try {
final ZipInputStream zip = new ZipInputStream(new FileInputStream(file));
try {
final FileOutputStream fout = new FileOutputStream(tempFile);
try {
final ZipOutputStream out = new ZipOutputStream(fout);
ZipEntry entry;
while ((entry = zip.getNextEntry()) != null) {
byte bytes[] = getBytes(zip);
if (!entry.isDirectory()) {
final DataInputStream din = new DataInputStream(new ByteArrayInputStream(bytes));
if (din.readInt() == CLASS_MAGIC) {
bytes = process(bytes);
} else {
if (verbose) {
log("ignoring " + entry.toString());
}
}
}
final ZipEntry outEntry = new ZipEntry(entry.getName());
outEntry.setMethod(entry.getMethod());
outEntry.setComment(entry.getComment());
outEntry.setSize(bytes.length);
if (outEntry.getMethod() == ZipEntry.STORED) {
final CRC32 crc = new CRC32();
crc.update(bytes);
outEntry.setCrc(crc.getValue());
outEntry.setCompressedSize(bytes.length);
}
out.putNextEntry(outEntry);
out.write(bytes);
out.closeEntry();
zip.closeEntry();
}
out.close();
} finally {
fout.close();
}
} finally {
zip.close();
}
if (file.delete()) {
final File newFile = new File(tempFile.getAbsolutePath());
if (!newFile.renameTo(file)) {
throw new IOException("can not rename " + tempFile + " to " + file);
}
} else {
throw new IOException("can not delete " + file);
}
} finally {
tempFile.delete();
}
}
