/** * Creates a new archive. * * @param ctx query context * @return archive * @throws QueryException query exception */ private B64 create(final QueryContext ctx) throws QueryException { final Iter entr = ctx.iter(expr[0]); final Iter cont = ctx.iter(expr[1]); final Item opt = expr.length > 2 ? expr[2].item(ctx, info) : null; final TokenMap map = new FuncParams(Q_OPTIONS, info).parse(opt); final byte[] f = map.get(FORMAT); final String format = f != null ? string(lc(f)) : "zip"; final ArchiveOut out = ArchiveOut.get(format, info); // check algorithm final byte[] alg = map.get(ALGORITHM); int level = ZipEntry.DEFLATED; if (alg != null) { if (format.equals("zip") && !eq(alg, STORED, DEFLATE) || format.equals("gzip") && !eq(alg, DEFLATE)) { ARCH_SUPP.thrw(info, ALGORITHM, alg); } if (eq(alg, STORED)) level = ZipEntry.STORED; else if (eq(alg, DEFLATE)) level = ZipEntry.DEFLATED; } out.level(level); try { int e = 0; int c = 0; Item en, cn; while (true) { en = entr.next(); cn = cont.next(); if (en == null || cn == null) break; if (out instanceof GZIPOut && c > 0) ARCH_ONE.thrw(info, format.toUpperCase(Locale.ENGLISH)); add(checkElmStr(en), cn, out, level); e++; c++; } // count remaining entries if (cn != null) do c++; while (cont.next() != null); if (en != null) do e++; while (entr.next() != null); if (e != c) throw ARCH_DIFF.thrw(info, e, c); } catch (final IOException ex) { Util.debug(ex); throw ARCH_FAIL.thrw(info, ex); } finally { out.close(); } return new B64(out.toArray()); }
/** * Updates an archive. * * @param ctx query context * @return updated archive * @throws QueryException query exception */ private B64 update(final QueryContext ctx) throws QueryException { final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64); // entries to be updated final TokenObjMap<Item[]> hm = new TokenObjMap<Item[]>(); final Iter entr = ctx.iter(expr[1]); final Iter cont = ctx.iter(expr[2]); int e = 0; int c = 0; Item en, cn; while (true) { en = entr.next(); cn = cont.next(); if (en == null || cn == null) break; hm.add(checkElmStr(en).string(info), new Item[] {en, cn}); e++; c++; } // count remaining entries if (cn != null) do c++; while (cont.next() != null); if (en != null) do e++; while (entr.next() != null); if (e != c) ARCH_DIFF.thrw(info, e, c); final ArchiveIn in = ArchiveIn.get(archive.input(info), info); final ArchiveOut out = ArchiveOut.get(in.format(), info); try { if (in instanceof GZIPIn) ARCH_MODIFY.thrw(info, in.format().toUpperCase(Locale.ENGLISH)); // delete entries to be updated while (in.more()) if (!hm.contains(token(in.entry().getName()))) out.write(in); // add new and updated entries for (final byte[] h : hm) { if (h == null) continue; final Item[] it = hm.get(h); add(it[0], it[1], out, ZipEntry.DEFLATED); } } catch (final IOException ex) { Util.debug(ex); ARCH_FAIL.thrw(info, ex); } finally { in.close(); out.close(); } return new B64(out.toArray()); }