/**
* 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();
}
}
/**
* 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;
}
/**
* Lists the table contents.
*
* @param table table reference
* @param root root node
* @param header table header
* @param skip number of columns to skip
*/
static void list(final Table table, final FElem root, final QNm header, final int skip) {
for (final TokenList list : table.contents) {
final FElem el = new FElem(header);
// don't show last attribute (input path)
final int ll = list.size() - skip;
for (int l = 1; l < ll; l++) {
el.add(new QNm(lc(table.header.get(l))), list.get(l));
}
el.add(list.get(0));
root.add(el);
}
}
@Override
public void plan(final FElem plan) {
final FElem e = planElem();
var.plan(e);
expr.plan(e);
plan.add(e);
}
@Override
public void plan(final FElem plan) {
final FElem e = planElem();
for (final Spec spec : specs) spec.plan(e);
plan.add(e);
}