public InputStream getInputStream(final ZipEntry ze) throws IOException, ZipException {
if (!(ze instanceof Entry)) {
return null;
}
final OffsetEntry offsetEntry = ((Entry) ze).getOffsetEntry();
ZipUtil.checkRequestedFeatures(ze);
final long start = offsetEntry.dataOffset;
final BoundedInputStream bis = new BoundedInputStream(start, ze.getCompressedSize());
switch (ze.getMethod()) {
case 0:
{
return bis;
}
case 8:
{
bis.addDummy();
final Inflater inflater = new Inflater(true);
return new InflaterInputStream(bis, inflater) {
public void close() throws IOException {
super.close();
inflater.end();
}
};
}
default:
{
throw new ZipException("Found unsupported compression method " + ze.getMethod());
}
}
}
/**
* Returns the options of an archive.
*
* @param ctx query context
* @return entries
* @throws QueryException query exception
*/
private FElem options(final QueryContext ctx) throws QueryException {
final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64);
String format = null;
int level = -1;
final ArchiveIn arch = ArchiveIn.get(archive.input(info), info);
try {
format = arch.format();
while (arch.more()) {
final ZipEntry ze = arch.entry();
if (ze.isDirectory()) continue;
level = ze.getMethod();
break;
}
} catch (final IOException ex) {
Util.debug(ex);
ARCH_FAIL.thrw(info, ex);
} finally {
arch.close();
}
// create result element
final FElem e = new FElem(Q_OPTIONS, NS);
if (format != null) e.add(new FElem(Q_FORMAT).add(Q_VALUE, format));
if (level >= 0) {
final byte[] lvl = level == 8 ? DEFLATE : level == 0 ? STORED : UNKNOWN;
e.add(new FElem(Q_ALGORITHM).add(Q_VALUE, lvl));
}
return e;
}
/**
* Dumps a zip entry into a string.
*
* @param ze a ZipEntry
*/
private String dumpZipEntry(ZipEntry ze) {
StringBuffer sb = new StringBuffer();
if (ze.isDirectory()) {
sb.append("d ");
} else {
sb.append("f ");
}
if (ze.getMethod() == ZipEntry.STORED) {
sb.append("stored ");
} else {
sb.append("defalted ");
}
sb.append(ze.getName());
sb.append("\t");
sb.append("" + ze.getSize());
if (ze.getMethod() == ZipEntry.DEFLATED) {
sb.append("/" + ze.getCompressedSize());
}
return (sb.toString());
}
/** Adds a new file entry to the ZIP output stream. */
void addFile(ZipOutputStream zos, File file) throws IOException {
String name = file.getPath();
boolean isDir = file.isDirectory();
if (isDir) {
name = name.endsWith(File.separator) ? name : (name + File.separator);
}
name = entryName(name);
if (name.equals("") || name.equals(".") || name.equals(zname)) {
return;
} else if ((name.equals(MANIFEST_DIR) || name.equals(MANIFEST_NAME)) && !Mflag) {
if (vflag) {
output(formatMsg("out.ignore.entry", name));
}
return;
}
long size = isDir ? 0 : file.length();
if (vflag) {
out.print(formatMsg("out.adding", name));
}
ZipEntry e = new ZipEntry(name);
e.setTime(file.lastModified());
if (size == 0) {
e.setMethod(ZipEntry.STORED);
e.setSize(0);
e.setCrc(0);
} else if (flag0) {
crc32File(e, file);
}
zos.putNextEntry(e);
if (!isDir) {
copy(file, zos);
}
zos.closeEntry();
/* report how much compression occurred. */
if (vflag) {
size = e.getSize();
long csize = e.getCompressedSize();
out.print(formatMsg2("out.size", String.valueOf(size), String.valueOf(csize)));
if (e.getMethod() == ZipEntry.DEFLATED) {
long ratio = 0;
if (size != 0) {
ratio = ((size - csize) * 100) / size;
}
output(formatMsg("out.deflated", String.valueOf(ratio)));
} else {
output(getMsg("out.stored"));
}
}
}
/**
* Extracts next entry from JAR file, creating directories as needed. If the entry is for a
* directory which doesn't exist prior to this invocation, returns that entry, otherwise returns
* null.
*/
ZipEntry extractFile(InputStream is, ZipEntry e) throws IOException {
ZipEntry rc = null;
String name = e.getName();
File f = new File(e.getName().replace('/', File.separatorChar));
if (e.isDirectory()) {
if (f.exists()) {
if (!f.isDirectory()) {
throw new IOException(formatMsg("error.create.dir", f.getPath()));
}
} else {
if (!f.mkdirs()) {
throw new IOException(formatMsg("error.create.dir", f.getPath()));
} else {
rc = e;
}
}
if (vflag) {
output(formatMsg("out.create", name));
}
} else {
if (f.getParent() != null) {
File d = new File(f.getParent());
if (!d.exists() && !d.mkdirs() || !d.isDirectory()) {
throw new IOException(formatMsg("error.create.dir", d.getPath()));
}
}
try {
copy(is, f);
} finally {
if (is instanceof ZipInputStream) ((ZipInputStream) is).closeEntry();
else is.close();
}
if (vflag) {
if (e.getMethod() == ZipEntry.DEFLATED) {
output(formatMsg("out.inflated", name));
} else {
output(formatMsg("out.extracted", name));
}
}
}
if (!useExtractionTime) {
long lastModified = e.getTime();
if (lastModified != -1) {
f.setLastModified(lastModified);
}
}
return rc;
}
// =============================================================================
/** 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;
}