示例#1
0
  /**
   * 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;
  }
示例#2
0
  @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;
  }
示例#3
0
  /**
   * 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();
    }
  }
示例#4
0
  /**
   * 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;
  }
示例#5
0
  @Override
  public Item item(final QueryContext qc, final InputInfo ii) throws QueryException {
    final B64 b64 = toB64(exprs[0], qc, true);
    long by = toLong(exprs[1], qc);
    if (b64 == null) return null;
    if (by == 0) return b64;

    byte[] bytes = b64.binary(info);
    final int bl = bytes.length;

    byte[] tmp = new byte[bl];
    int r = 0;
    if (by > 7) {
      tmp = new BigInteger(bytes).shiftLeft((int) by).toByteArray();
      if (tmp.length != bl) {
        bytes = tmp;
        tmp = new byte[bl];
        System.arraycopy(bytes, bytes.length - bl, tmp, 0, bl);
      }
    } else if (by > 0) {
      for (int i = bl - 1; i >= 0; i--) {
        final byte b = bytes[i];
        tmp[i] = (byte) (b << by | r);
        r = b >>> 32 - by;
      }
    } else if (by > -8) {
      by = -by;
      for (int i = 0; i < bl; i++) {
        final int b = bytes[i] & 0xFF;
        tmp[i] = (byte) (b >>> by | r);
        r = b << 32 - by;
      }
    } else {
      by = -by;
      BigInteger bi = new BigInteger(bytes);
      if (bi.signum() >= 0) {
        bi = bi.shiftRight((int) by);
      } else {
        final BigInteger o = BigInteger.ONE.shiftLeft(bl * 8 + 1);
        final BigInteger m = o.subtract(BigInteger.ONE).shiftRight((int) by + 1);
        bi = bi.subtract(o).shiftRight((int) by).and(m);
      }
      tmp = bi.toByteArray();
      final int tl = tmp.length;
      if (tl != bl) {
        bytes = tmp;
        tmp = new byte[bl];
        System.arraycopy(bytes, 0, tmp, bl - tl, tl);
      }
    }
    return new B64(tmp);
  }
示例#6
0
  /**
   * 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());
  }
示例#7
0
  /**
   * Deletes files from an archive.
   *
   * @param ctx query context
   * @return updated archive
   * @throws QueryException query exception
   */
  private B64 delete(final QueryContext ctx) throws QueryException {
    final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64);
    // entries to be deleted
    final TokenObjMap<Item[]> hm = new TokenObjMap<Item[]>();
    final Iter names = ctx.iter(expr[1]);
    for (Item en; (en = names.next()) != null; ) {
      hm.add(checkElmStr(en).string(info), null);
    }

    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));
      while (in.more()) if (!hm.contains(token(in.entry().getName()))) out.write(in);
    } catch (final IOException ex) {
      Util.debug(ex);
      ARCH_FAIL.thrw(info, ex);
    } finally {
      in.close();
      out.close();
    }
    return new B64(out.toArray());
  }