/**
* Adds the specified entry to the output stream.
*
* @param entry entry descriptor
* @param con contents
* @param out output archive
* @param level default compression level
* @throws QueryException query exception
* @throws IOException I/O exception
*/
private void add(final Item entry, final Item con, final ArchiveOut out, final int level)
throws QueryException, IOException {
// create new zip entry
final String name = string(entry.string(info));
if (name.isEmpty()) ARCH_EMPTY.thrw(info);
final ZipEntry ze = new ZipEntry(name);
String en = null;
// compression level
byte[] lvl = null;
if (entry instanceof ANode) {
final ANode el = (ANode) entry;
lvl = el.attribute(Q_LEVEL);
// last modified
final byte[] mod = el.attribute(Q_LAST_MOD);
if (mod != null) {
try {
ze.setTime(new Int(new Dtm(mod, info)).itr());
} catch (final QueryException qe) {
ARCH_DATETIME.thrw(info, mod);
}
}
// encoding
final byte[] enc = el.attribute(Q_ENCODING);
if (enc != null) {
en = string(enc);
if (!Charset.isSupported(en)) ARCH_ENCODING.thrw(info, enc);
}
}
// data to be compressed
byte[] val = checkStrBin(con);
if (con instanceof AStr && en != null && en != Token.UTF8) val = encode(val, en);
try {
out.level(lvl == null ? level : toInt(lvl));
} catch (final IllegalArgumentException ex) {
ARCH_LEVEL.thrw(info, lvl);
}
out.write(ze, val);
}
@Override
public B64 item(final QueryContext qc, final InputInfo ii) throws QueryException {
checkCreate(qc);
final IOFile root = new IOFile(toPath(0, qc).toString());
final ArchOptions opts = toOptions(1, Q_OPTIONS, new ArchOptions(), qc);
final Iter entries;
if (exprs.length > 2) {
entries = qc.iter(exprs[2]);
} else {
final TokenList tl = new TokenList();
for (final String file : root.descendants()) tl.add(file);
entries = StrSeq.get(tl).iter();
}
final String format = opts.get(ArchOptions.FORMAT);
final int level = level(opts);
if (!root.isDir()) throw FILE_NO_DIR_X.get(info, root);
try (final ArchiveOut out = ArchiveOut.get(format.toLowerCase(Locale.ENGLISH), info)) {
out.level(level);
try {
while (true) {
Item en = entries.next();
if (en == null) break;
en = checkElemToken(en);
final IOFile file = new IOFile(root, string(en.string(info)));
if (!file.exists()) throw FILE_NOT_FOUND_X.get(info, file);
if (file.isDir()) throw FILE_IS_DIR_X.get(info, file);
add(en, new B64(file.read()), out, level, qc);
}
} catch (final IOException ex) {
throw ARCH_FAIL_X.get(info, ex);
}
return new B64(out.finish());
}
}