@Override
public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
checkCreate(qc);
final Path path = toPath(0, qc);
final B64 archive = toB64(exprs[1], qc, false);
final TokenSet hs = entries(2, qc);
try (ArchiveIn in = ArchiveIn.get(archive.input(info), info)) {
while (in.more()) {
final ZipEntry ze = in.entry();
final String name = ze.getName();
if (hs == null || hs.delete(token(name)) != 0) {
final Path file = path.resolve(name);
if (ze.isDirectory()) {
Files.createDirectories(file);
} else {
Files.createDirectories(file.getParent());
Files.write(file, in.read());
}
}
}
} catch (final IOException ex) {
throw ARCH_FAIL_X.get(info, ex);
}
return null;
}
/**
* Extracts entries from the archive.
*
* @param ctx query context
* @return text entries
* @throws QueryException query exception
*/
private TokenList extract(final QueryContext ctx) throws QueryException {
final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64);
TokenSet hs = null;
if (expr.length > 1) {
// filter result to specified entries
hs = new TokenSet();
final Iter names = ctx.iter(expr[1]);
for (Item en; (en = names.next()) != null; ) {
hs.add(checkElmStr(en).string(info));
}
}
final TokenList tl = new TokenList();
final ArchiveIn in = ArchiveIn.get(archive.input(info), info);
try {
while (in.more()) {
final ZipEntry ze = in.entry();
if (ze.isDirectory()) continue;
if (hs == null || hs.delete(token(ze.getName())) != 0) tl.add(in.read());
}
} catch (final IOException ex) {
Util.debug(ex);
ARCH_FAIL.thrw(info, ex);
} finally {
in.close();
}
return tl;
}