/**
* Returns the entries of an archive.
*
* @param ctx query context
* @return entries
* @throws QueryException query exception
*/
private Iter entries(final QueryContext ctx) throws QueryException {
final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64);
final ValueBuilder vb = new ValueBuilder();
final ArchiveIn in = ArchiveIn.get(archive.input(info), info);
try {
while (in.more()) {
final ZipEntry ze = in.entry();
if (ze.isDirectory()) continue;
final FElem e = new FElem(Q_ENTRY, NS);
long s = ze.getSize();
if (s != -1) e.add(Q_SIZE, token(s));
s = ze.getTime();
if (s != -1) e.add(Q_LAST_MOD, new Dtm(s, info).string(info));
s = ze.getCompressedSize();
if (s != -1) e.add(Q_COMP_SIZE, token(s));
e.add(ze.getName());
vb.add(e);
}
return vb;
} catch (final IOException ex) {
Util.debug(ex);
throw ARCH_FAIL.thrw(info, ex);
} finally {
in.close();
}
}
/**
* Extracts binary entries.
*
* @param ctx query context
* @return binary entry
* @throws QueryException query exception
*/
private ValueBuilder extractBinary(final QueryContext ctx) throws QueryException {
final ValueBuilder vb = new ValueBuilder();
for (final byte[] b : extract(ctx)) vb.add(new B64(b));
return vb;
}
/**
* Extracts text entries.
*
* @param ctx query context
* @return text entry
* @throws QueryException query exception
*/
private ValueBuilder extractText(final QueryContext ctx) throws QueryException {
final String enc = encoding(2, ARCH_ENCODING, ctx);
final ValueBuilder vb = new ValueBuilder();
for (final byte[] b : extract(ctx)) vb.add(Str.get(encode(b, enc)));
return vb;
}