示例#1
0
  @Override
  public Map<String, Ref> getRefs(String prefix) throws IOException {
    final RefList<LooseRef> oldLoose = looseRefs.get();
    LooseScanner scan = new LooseScanner(oldLoose);
    scan.scan(prefix);
    final RefList<Ref> packed = getPackedRefs();

    RefList<LooseRef> loose;
    if (scan.newLoose != null) {
      scan.newLoose.sort();
      loose = scan.newLoose.toRefList();
      if (looseRefs.compareAndSet(oldLoose, loose)) modCnt.incrementAndGet();
    } else loose = oldLoose;
    fireRefsChanged();

    RefList.Builder<Ref> symbolic = scan.symbolic;
    for (int idx = 0; idx < symbolic.size(); ) {
      final Ref symbolicRef = symbolic.get(idx);
      final Ref resolvedRef = resolve(symbolicRef, 0, prefix, loose, packed);
      if (resolvedRef != null && resolvedRef.getObjectId() != null) {
        symbolic.set(idx, resolvedRef);
        idx++;
      } else {
        // A broken symbolic reference, we have to drop it from the
        // collections the client is about to receive. Should be a
        // rare occurrence so pay a copy penalty.
        symbolic.remove(idx);
        final int toRemove = loose.find(symbolicRef.getName());
        if (0 <= toRemove) loose = loose.remove(toRemove);
      }
    }
    symbolic.sort();

    return new RefMap(prefix, packed, upcast(loose), symbolic.toRefList());
  }
示例#2
0
  private RefList<Ref> parsePackedRefs(final BufferedReader br) throws IOException {
    RefList.Builder<Ref> all = new RefList.Builder<Ref>();
    Ref last = null;
    boolean peeled = false;
    boolean needSort = false;

    String p;
    while ((p = br.readLine()) != null) {
      if (p.charAt(0) == '#') {
        if (p.startsWith(PACKED_REFS_HEADER)) {
          p = p.substring(PACKED_REFS_HEADER.length());
          peeled = p.contains(PACKED_REFS_PEELED);
        }
        continue;
      }

      if (p.charAt(0) == '^') {
        if (last == null) throw new IOException(JGitText.get().peeledLineBeforeRef);

        ObjectId id = ObjectId.fromString(p.substring(1));
        last = new ObjectIdRef.PeeledTag(PACKED, last.getName(), last.getObjectId(), id);
        all.set(all.size() - 1, last);
        continue;
      }

      int sp = p.indexOf(' ');
      if (sp < 0) {
        throw new IOException(
            MessageFormat.format(
                JGitText.get().packedRefsCorruptionDetected, packedRefsFile.getAbsolutePath()));
      }
      ObjectId id = ObjectId.fromString(p.substring(0, sp));
      String name = copy(p, sp + 1, p.length());
      ObjectIdRef cur;
      if (peeled) cur = new ObjectIdRef.PeeledNonTag(PACKED, name, id);
      else cur = new ObjectIdRef.Unpeeled(PACKED, name, id);
      if (last != null && RefComparator.compareTo(last, cur) > 0) needSort = true;
      all.add(cur);
      last = cur;
    }

    if (needSort) all.sort();
    return all.toRefList();
  }