Examples with HistogramDiff org.eclipse.jgit.diff.HistogramDiff used on opensource projects

Example 1 with HistogramDiff

use of org.eclipse.jgit.diff.HistogramDiff in project nifi by apache.

the class TemplateSerializerTest method validateDiffWithChangingComponentIdAndAdditionalElements.

@Test
public void validateDiffWithChangingComponentIdAndAdditionalElements() throws Exception {
    // Create initial template (TemplateDTO)
    FlowSnippetDTO snippet = new FlowSnippetDTO();
    Set<ProcessorDTO> procs = new HashSet<>();
    for (int i = 4; i > 0; i--) {
        ProcessorDTO procDTO = new ProcessorDTO();
        procDTO.setType("Processor" + i + ".class");
        procDTO.setId(ComponentIdGenerator.generateId().toString());
        procs.add(procDTO);
    }
    snippet.setProcessors(procs);
    TemplateDTO origTemplate = new TemplateDTO();
    origTemplate.setDescription("MyTemplate");
    origTemplate.setId("MyTemplate");
    origTemplate.setSnippet(snippet);
    byte[] serTemplate = TemplateSerializer.serialize(origTemplate);
    // Deserialize Template into TemplateDTO
    ByteArrayInputStream in = new ByteArrayInputStream(serTemplate);
    JAXBContext context = JAXBContext.newInstance(TemplateDTO.class);
    Unmarshaller unmarshaller = context.createUnmarshaller();
    XMLStreamReader xsr = XmlUtils.createSafeReader(in);
    JAXBElement<TemplateDTO> templateElement = unmarshaller.unmarshal(xsr, TemplateDTO.class);
    TemplateDTO deserTemplate = templateElement.getValue();
    // Modify deserialized template
    FlowSnippetDTO deserSnippet = deserTemplate.getSnippet();
    Set<ProcessorDTO> deserProcs = deserSnippet.getProcessors();
    int c = 0;
    for (ProcessorDTO processorDTO : deserProcs) {
        if (c % 2 == 0) {
            processorDTO.setName("Hello-" + c);
        }
        c++;
    }
    // add new Processor
    ProcessorDTO procDTO = new ProcessorDTO();
    procDTO.setType("ProcessorNew" + ".class");
    procDTO.setId(ComponentIdGenerator.generateId().toString());
    deserProcs.add(procDTO);
    // Serialize modified template
    byte[] serTemplate2 = TemplateSerializer.serialize(deserTemplate);
    RawText rt1 = new RawText(serTemplate);
    RawText rt2 = new RawText(serTemplate2);
    EditList diffList = new EditList();
    diffList.addAll(new HistogramDiff().diff(RawTextComparator.DEFAULT, rt1, rt2));
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try (DiffFormatter diff = new DiffFormatter(out)) {
        diff.format(diffList, rt1, rt2);
        BufferedReader reader = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(out.toByteArray()), StandardCharsets.UTF_8));
        List<String> changes = reader.lines().peek(System.out::println).filter(line -> line.startsWith("+") || line.startsWith("-")).collect(Collectors.toList());
        assertEquals("+            <name>Hello-0</name>", changes.get(0));
        assertEquals("+            <name>Hello-2</name>", changes.get(1));
        assertEquals("+        <processors>", changes.get(2));
        assertEquals("+            <type>ProcessorNew.class</type>", changes.get(4));
        assertEquals("+        </processors>", changes.get(5));
    }
}

Example 2 with HistogramDiff

use of org.eclipse.jgit.diff.HistogramDiff in project oozie by apache.

the class CoordUpdateXCommand method getDiffinGitFormat.

/**
 * Get the differences in git format.
 *
 * @param string1 the string1
 * @param string2 the string2
 * @return the diff
 * @throws IOException Signals that an I/O exception has occurred.
 */
private String getDiffinGitFormat(String string1, String string2) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    RawText rt1 = new RawText(string1.getBytes());
    RawText rt2 = new RawText(string2.getBytes());
    EditList diffList = new EditList();
    diffList.addAll(new HistogramDiff().diff(RawTextComparator.DEFAULT, rt1, rt2));
    new DiffFormatter(out).format(diffList, rt1, rt2);
    return out.toString();
}

Example 3 with HistogramDiff

use of org.eclipse.jgit.diff.HistogramDiff in project gerrit by GerritCodeReview.

the class PatchListLoader method toFileHeaderWithoutMyersDiff.

private FileHeader toFileHeaderWithoutMyersDiff(DiffFormatter diffFormatter, DiffEntry diffEntry) throws IOException {
    HistogramDiff histogramDiff = new HistogramDiff();
    histogramDiff.setFallbackAlgorithm(null);
    diffFormatter.setDiffAlgorithm(histogramDiff);
    return diffFormatter.toFileHeader(diffEntry);
}

Example 4 with HistogramDiff

use of org.eclipse.jgit.diff.HistogramDiff in project gerrit by GerritCodeReview.

the class PatchListLoader method createPatchListEntry.

private static PatchListEntry createPatchListEntry(RawTextComparator cmp, RevCommit aCommit, Text aText, Text bText, String fileName) {
    byte[] rawHdr = getRawHeader(aCommit != null, fileName);
    byte[] aContent = aText.getContent();
    byte[] bContent = bText.getContent();
    long size = bContent.length;
    long sizeDelta = bContent.length - aContent.length;
    RawText aRawText = new RawText(aContent);
    RawText bRawText = new RawText(bContent);
    EditList edits = new HistogramDiff().diff(cmp, aRawText, bRawText);
    FileHeader fh = new FileHeader(rawHdr, edits, PatchType.UNIFIED);
    return new PatchListEntry(fh, edits, size, sizeDelta);
}