Examples of org.eclipse.jgit.diff.DiffAlgorithm

org.eclipse.jgit.diff.DiffAlgorithm
Compares two {@link Sequence}s to create an {@link EditList} of changes.An algorithm's {@code diff} method must be callable from concurrent threadswithout data collisions. This permits some algorithms to use a singleton pattern, with concurrent invocations using the same singleton. Other algorithms may support parameterization, in which case the caller can create a unique instance per thread.

  }


  private static final int minCPUTimerTicks = 10;


  private void testOne(Test test, RawText a, RawText b) {
    final DiffAlgorithm da = test.algorithm.create();
    int cpuTimeChanges = 0;
    int cnt = 0;


    final long startTime = mxBean.getCurrentThreadCpuTime();
    long lastTime = startTime;
    while (cpuTimeChanges < minCPUTimerTicks) {
      da.diff(cmp, a, b);
      cnt++;


      long interimTime = mxBean.getCurrentThreadCpuTime();
      if (interimTime != lastTime) {
        cpuTimeChanges++;

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  }


  private static final int minCPUTimerTicks = 10;


  private void testOne(Test test, RawText a, RawText b) {
    final DiffAlgorithm da = test.algorithm.create();
    int cpuTimeChanges = 0;
    int cnt = 0;


    final long startTime = mxBean.getCurrentThreadCpuTime();
    long lastTime = startTime;
    while (cpuTimeChanges < minCPUTimerTicks) {
      da.diff(cmp, a, b);
      cnt++;


      long interimTime = mxBean.getCurrentThreadCpuTime();
      if (interimTime != lastTime) {
        cpuTimeChanges++;

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    public void getHunks() throws IOException {
        // given
        FileDiff fileDiff = new FileDiff();
        fileDiff.a = new RawText("apple\nbanana\ncat\n".getBytes());
        fileDiff.b = new RawText("apple\nbanana\ncorn\n".getBytes());
        DiffAlgorithm diffAlgorithm =
                DiffAlgorithm.getAlgorithm(DiffAlgorithm.SupportedAlgorithm.HISTOGRAM);
        fileDiff.editList = diffAlgorithm.diff(RawTextComparator.DEFAULT, fileDiff.a,
                        fileDiff.b);


        // when
        List<Hunk> hunks = fileDiff.getHunks();

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      RawText oldText = readText(diffEntry.getOldId(), reader);
      RawText newText = readText(diffEntry.getNewId(), reader);


      StoredConfig config = repository.getConfig();
      DiffAlgorithm diffAlgorithm = DiffAlgorithm.getAlgorithm(config
          .getEnum(ConfigConstants.CONFIG_DIFF_SECTION, null,
              ConfigConstants.CONFIG_KEY_ALGORITHM,
              SupportedAlgorithm.HISTOGRAM));


      EditList editList = diffAlgorithm.diff(RawTextComparator.DEFAULT,
          oldText, newText);


      return new Diff(diffEntry.getOldPath(), oldText, newText, editList);
    } catch (IOException e) {
      return null;

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Related Classes of org.eclipse.jgit.diff.DiffAlgorithm

models.FileDiffTest

org.eclipse.egit.ui.internal.blame.BlameRevision

org.eclipse.jgit.pgm.debug.DiffAlgorithms

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