diff options
Diffstat (limited to 'src/main/java/com/gitblit/utils/DiffUtils.java')
| -rw-r--r-- | src/main/java/com/gitblit/utils/DiffUtils.java | 180 |
1 files changed, 165 insertions, 15 deletions
diff --git a/src/main/java/com/gitblit/utils/DiffUtils.java b/src/main/java/com/gitblit/utils/DiffUtils.java index dd2a7807..41aab4cf 100644 --- a/src/main/java/com/gitblit/utils/DiffUtils.java +++ b/src/main/java/com/gitblit/utils/DiffUtils.java @@ -52,6 +52,27 @@ public class DiffUtils { private static final Logger LOGGER = LoggerFactory.getLogger(DiffUtils.class);
/**
+ * Callback interface for binary diffs. All the getDiff methods here take an optional handler;
+ * if given and the {@link DiffOutputType} is {@link DiffOutputType#HTML HTML}, it is responsible
+ * for displaying a binary diff.
+ */
+ public interface BinaryDiffHandler {
+
+ /**
+ * Renders a binary diff. The result must be valid HTML, it will be inserted into an HTML table cell.
+ * May return {@code null} if the default behavior (which is typically just a textual note "Bnary
+ * files differ") is desired.
+ *
+ * @param diffEntry
+ * current diff entry
+ *
+ * @return the rendered diff as HTML, or {@code null} if the default is desired.
+ */
+ public String renderBinaryDiff(final DiffEntry diffEntry);
+
+ }
+
+ /**
* Enumeration for the diff output types.
*/
public static enum DiffOutputType {
@@ -68,6 +89,40 @@ public class DiffUtils { }
/**
+ * Enumeration for the diff comparator types.
+ */
+ public static enum DiffComparator {
+ SHOW_WHITESPACE(RawTextComparator.DEFAULT),
+ IGNORE_WHITESPACE(RawTextComparator.WS_IGNORE_ALL),
+ IGNORE_LEADING(RawTextComparator.WS_IGNORE_LEADING),
+ IGNORE_TRAILING(RawTextComparator.WS_IGNORE_TRAILING),
+ IGNORE_CHANGES(RawTextComparator.WS_IGNORE_CHANGE);
+
+ public final RawTextComparator textComparator;
+
+ DiffComparator(RawTextComparator textComparator) {
+ this.textComparator = textComparator;
+ }
+
+ public DiffComparator getOpposite() {
+ return this == SHOW_WHITESPACE ? IGNORE_WHITESPACE : SHOW_WHITESPACE;
+ }
+
+ public String getTranslationKey() {
+ return "gb." + name().toLowerCase();
+ }
+
+ public static DiffComparator forName(String name) {
+ for (DiffComparator type : values()) {
+ if (type.name().equalsIgnoreCase(name)) {
+ return type;
+ }
+ }
+ return null;
+ }
+ }
+
+ /**
* Encapsulates the output of a diff.
*/
public static class DiffOutput implements Serializable {
@@ -102,13 +157,16 @@ public class DiffUtils { public final List<PathChangeModel> paths = new ArrayList<PathChangeModel>();
private final String commitId;
+
+ private final Repository repository;
- public DiffStat(String commitId) {
+ public DiffStat(String commitId, Repository repository) {
this.commitId = commitId;
+ this.repository = repository;
}
public PathChangeModel addPath(DiffEntry entry) {
- PathChangeModel pcm = PathChangeModel.from(entry, commitId);
+ PathChangeModel pcm = PathChangeModel.from(entry, commitId, repository);
paths.add(pcm);
return pcm;
}
@@ -172,12 +230,50 @@ public class DiffUtils { *
* @param repository
* @param commit
+ * @param comparator
+ * @param outputType
+ * @param tabLength
+ * @return the diff
+ */
+ public static DiffOutput getCommitDiff(Repository repository, RevCommit commit,
+ DiffComparator comparator, DiffOutputType outputType, int tabLength) {
+ return getDiff(repository, null, commit, null, comparator, outputType, tabLength);
+ }
+
+ /**
+ * Returns the complete diff of the specified commit compared to its primary parent.
+ *
+ * @param repository
+ * @param commit
+ * @param comparator
* @param outputType
+ * @param handler
+ * to use for rendering binary diffs if {@code outputType} is {@link DiffOutputType#HTML HTML}.
+ * May be {@code null}, resulting in the default behavior.
+ * @param tabLength
* @return the diff
*/
public static DiffOutput getCommitDiff(Repository repository, RevCommit commit,
- DiffOutputType outputType) {
- return getDiff(repository, null, commit, null, outputType);
+ DiffComparator comparator, DiffOutputType outputType, BinaryDiffHandler handler, int tabLength) {
+ return getDiff(repository, null, commit, null, comparator, outputType, handler, tabLength);
+ }
+
+
+ /**
+ * Returns the diff for the specified file or folder from the specified
+ * commit compared to its primary parent.
+ *
+ * @param repository
+ * @param commit
+ * @param path
+ * @param comparator
+ * @param outputType
+ * @param tabLength
+ * @return the diff
+ */
+ public static DiffOutput getDiff(Repository repository, RevCommit commit, String path,
+ DiffComparator comparator, DiffOutputType outputType, int tabLength) {
+ return getDiff(repository, null, commit, path, comparator, outputType, tabLength);
}
/**
@@ -187,12 +283,17 @@ public class DiffUtils { * @param repository
* @param commit
* @param path
+ * @param comparator
* @param outputType
+ * @param handler
+ * to use for rendering binary diffs if {@code outputType} is {@link DiffOutputType#HTML HTML}.
+ * May be {@code null}, resulting in the default behavior.
+ * @param tabLength
* @return the diff
*/
public static DiffOutput getDiff(Repository repository, RevCommit commit, String path,
- DiffOutputType outputType) {
- return getDiff(repository, null, commit, path, outputType);
+ DiffComparator comparator, DiffOutputType outputType, BinaryDiffHandler handler, int tabLength) {
+ return getDiff(repository, null, commit, path, comparator, outputType, handler, tabLength);
}
/**
@@ -201,12 +302,34 @@ public class DiffUtils { * @param repository
* @param baseCommit
* @param commit
+ * @param comparator
* @param outputType
+ * @param tabLength
+ *
* @return the diff
*/
public static DiffOutput getDiff(Repository repository, RevCommit baseCommit, RevCommit commit,
- DiffOutputType outputType) {
- return getDiff(repository, baseCommit, commit, null, outputType);
+ DiffComparator comparator, DiffOutputType outputType, int tabLength) {
+ return getDiff(repository, baseCommit, commit, null, comparator, outputType, tabLength);
+ }
+
+ /**
+ * Returns the complete diff between the two specified commits.
+ *
+ * @param repository
+ * @param baseCommit
+ * @param commit
+ * @param comparator
+ * @param outputType
+ * @param handler
+ * to use for rendering binary diffs if {@code outputType} is {@link DiffOutputType#HTML HTML}.
+ * May be {@code null}, resulting in the default behavior.
+ * @param tabLength
+ * @return the diff
+ */
+ public static DiffOutput getDiff(Repository repository, RevCommit baseCommit, RevCommit commit,
+ DiffComparator comparator, DiffOutputType outputType, BinaryDiffHandler handler, int tabLength) {
+ return getDiff(repository, baseCommit, commit, null, comparator, outputType, handler, tabLength);
}
/**
@@ -221,27 +344,54 @@ public class DiffUtils { * if the path is specified, the diff is restricted to that file
* or folder. if unspecified, the diff is for the entire commit.
* @param outputType
+ * @param diffComparator
+ * @param tabLength
* @return the diff
*/
public static DiffOutput getDiff(Repository repository, RevCommit baseCommit, RevCommit commit,
- String path, DiffOutputType outputType) {
+ String path, DiffComparator diffComparator, DiffOutputType outputType, int tabLength) {
+ return getDiff(repository, baseCommit, commit, path, diffComparator, outputType, null, tabLength);
+ }
+
+ /**
+ * Returns the diff between two commits for the specified file.
+ *
+ * @param repository
+ * @param baseCommit
+ * if base commit is null the diff is to the primary parent of
+ * the commit.
+ * @param commit
+ * @param path
+ * if the path is specified, the diff is restricted to that file
+ * or folder. if unspecified, the diff is for the entire commit.
+ * @param comparator
+ * @param outputType
+ * @param handler
+ * to use for rendering binary diffs if {@code outputType} is {@link DiffOutputType#HTML HTML}.
+ * May be {@code null}, resulting in the default behavior.
+ * @param tabLength
+ * @return the diff
+ */
+ public static DiffOutput getDiff(Repository repository, RevCommit baseCommit, RevCommit commit, String path,
+ DiffComparator comparator, DiffOutputType outputType, final BinaryDiffHandler handler, int tabLength) {
DiffStat stat = null;
String diff = null;
try {
- final ByteArrayOutputStream os = new ByteArrayOutputStream();
- RawTextComparator cmp = RawTextComparator.DEFAULT;
+ ByteArrayOutputStream os = null;
+
DiffFormatter df;
switch (outputType) {
case HTML:
- df = new GitBlitDiffFormatter(os, commit.getName());
+ df = new GitBlitDiffFormatter(commit.getName(), repository, path, handler, tabLength);
break;
case PLAIN:
default:
+ os = new ByteArrayOutputStream();
df = new DiffFormatter(os);
break;
}
df.setRepository(repository);
- df.setDiffComparator(cmp);
+ df.setDiffComparator((comparator == null ? DiffComparator.SHOW_WHITESPACE : comparator).textComparator);
df.setDetectRenames(true);
RevTree commitTree = commit.getTree();
@@ -271,6 +421,7 @@ public class DiffUtils { } else {
df.format(diffEntries);
}
+ df.flush();
if (df instanceof GitBlitDiffFormatter) {
// workaround for complex private methods in DiffFormatter
diff = ((GitBlitDiffFormatter) df).getHtml();
@@ -278,7 +429,6 @@ public class DiffUtils { } else {
diff = os.toString();
}
- df.flush();
} catch (Throwable t) {
LOGGER.error("failed to generate commit diff!", t);
}
@@ -401,7 +551,7 @@ public class DiffUtils { DiffStat stat = null;
try {
RawTextComparator cmp = RawTextComparator.DEFAULT;
- DiffStatFormatter df = new DiffStatFormatter(commit.getName());
+ DiffStatFormatter df = new DiffStatFormatter(commit.getName(), repository);
df.setRepository(repository);
df.setDiffComparator(cmp);
df.setDetectRenames(true);
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