Examples of org.tmatesoft.hg.internal.Preview

org.tmatesoft.hg.internal.Preview
Filters may need to look into data stream before actual processing takes place, for example, to find out whether filter shall be applied at all. {@link ByteChannel ByteChannels} that may use filters shall be checked for {@link Preview} adaptable before writing to them. E.g. newline filter handles streams with mixed newline endings according to configuration option (either process or ignore), hence, need to check complete stream first. @author Artem Tikhomirov @author TMate Software Ltd.

    try {
      is = f.newInputChannel();
//      ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
      ByteBuffer fb = ByteBuffer.allocate(8192); // FIXME temp fix to ensure big enough buffer for KeywordFilter
      FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
      Preview preview = Adaptable.Factory.getAdapter(filters, Preview.class, null);
      if (preview != null) {
        while (is.read(fb) != -1) {
          fb.flip();
          preview.preview(fb);
          fb.clear();
        }
        // reset channel to read once again
        try {
          is.close();

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    public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) {
      try {
        prepare(revisionNumber, da); // XXX perhaps, prepare shall return DA (sliced, if needed)
        final ProgressSupport progressSupport = ProgressSupport.Factory.get(sink);
        ByteBuffer buf = ByteBuffer.allocate(actualLen > 8192 ? 8192 : actualLen);
        Preview p = Adaptable.Factory.getAdapter(sink, Preview.class, null);
        if (p != null) {
          progressSupport.start(2 * da.length());
          while (!da.isEmpty()) {
            checkCancelled();
            da.readBytes(buf);
            p.preview(buf);
            buf.clear();
          }
          da.reset();
          prepare(revisionNumber, da);
          progressSupport.worked(da.length());

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Related Classes of org.tmatesoft.hg.internal.Preview

org.tmatesoft.hg.repo.HgWorkingCopyStatusCollector

org.tmatesoft.hg.repo.Revlog$ContentPipe

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