/** * 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 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; }
/** * 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; }