[JGIT PATCH 5/5] Add the "jgit diff" command
This commit contains fixes provided by Christian Halstrick.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
.../services/org.spearce.jgit.pgm.TextBuiltin | 1 +
.../src/org/spearce/jgit/pgm/Diff.java | 133 ++++++++++++++++++++
.../src/org/spearce/jgit/diff/DiffFormatter.java | 2 +-
3 files changed, 135 insertions(+), 1 deletions(-)
create mode 100644 org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Diff.java
diff --git a/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin b/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
index 3a8cc09..107ef38 100644
--- a/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
+++ b/org.spearce.jgit.pgm/src/META-INF/services/org.spearce.jgit.pgm.TextBuiltin
@@ -1,6 +1,7 @@
org.spearce.jgit.pgm.Branch
org.spearce.jgit.pgm.Clone
org.spearce.jgit.pgm.Daemon
+org.spearce.jgit.pgm.Diff
org.spearce.jgit.pgm.DiffTree
org.spearce.jgit.pgm.Fetch
org.spearce.jgit.pgm.Glog
diff --git a/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Diff.java b/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Diff.java
new file mode 100644
index 0000000..56e352d
--- /dev/null
+++ b/org.spearce.jgit.pgm/src/org/spearce/jgit/pgm/Diff.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2009, Johannes E. Schindelin
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * - Neither the name of the Git Development Community nor the
+ * names of its contributors may be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.spearce.jgit.pgm;
+
+import java.io.IOException;
+import java.io.PrintStream;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.kohsuke.args4j.Argument;
+import org.kohsuke.args4j.ExampleMode;
+import org.kohsuke.args4j.Option;
+
+import org.spearce.jgit.diff.DiffFormatter;
+import org.spearce.jgit.diff.MyersDiff;
+import org.spearce.jgit.diff.RawText;
+
+import org.spearce.jgit.lib.Constants;
+import org.spearce.jgit.lib.FileMode;
+import org.spearce.jgit.lib.ObjectId;
+import org.spearce.jgit.lib.Ref;
+
+import org.spearce.jgit.pgm.opt.CmdLineParser;
+import org.spearce.jgit.pgm.opt.PathTreeFilterHandler;
+
+import org.spearce.jgit.treewalk.AbstractTreeIterator;
+import org.spearce.jgit.treewalk.TreeWalk;
+
+import org.spearce.jgit.treewalk.filter.AndTreeFilter;
+import org.spearce.jgit.treewalk.filter.TreeFilter;
+
+@Command(common = true, usage = "Show diffs")
+class Diff extends TextBuiltin {
+ @Argument(index = 0, metaVar = "tree-ish", required = true)
+ void tree_0(final AbstractTreeIterator c) {
+ trees.add(c);
+ }
+
+ @Argument(index = 1, metaVar = "tree-ish", required = true)
+ private final List<AbstractTreeIterator> trees = new ArrayList<AbstractTreeIterator>();
+
+ @Option(name = "--", metaVar = "path", multiValued = true, handler = PathTreeFilterHandler.class)
+ private TreeFilter pathFilter = TreeFilter.ALL;
+
+ private DiffFormatter fmt = new DiffFormatter();
+
+ @Override
+ protected void run() throws Exception {
+ final TreeWalk walk = new TreeWalk(db);
+ walk.reset();
+ walk.setRecursive(true);
+ for (final AbstractTreeIterator i : trees)
+ walk.addTree(i);
+ walk.setFilter(AndTreeFilter.create(TreeFilter.ANY_DIFF, pathFilter));
+
+ final int nTree = walk.getTreeCount();
+ while (walk.next())
+ outputDiff(System.out, walk.getPathString(),
+ walk.getObjectId(0), walk.getFileMode(0),
+ walk.getObjectId(1), walk.getFileMode(1));
+ }
+
+ protected void outputDiff(PrintStream out, String path,
+ ObjectId id1, FileMode mode1, ObjectId id2, FileMode mode2) throws IOException {
+ String name1 = "a/" + path;
+ String name2 = "b/" + path;
+ out.println("diff --git " + name1 + " " + name2);
+ boolean isNew=false;
+ boolean isDelete=false;
+ if (id1.equals(id1.zeroId())) {
+ out.println("new file mode " + mode2);
+ isNew=true;
+ } else if (id2.equals(id2.zeroId())) {
+ out.println("deleted file mode " + mode1);
+ isDelete=true;
+ } else if (!mode1.equals(mode2)) {
+ out.println("old mode " + mode1);
+ out.println("new mode " + mode2);
+ }
+ out.println("index " + id1.abbreviate(db, 7).name()
+ + ".." + id2.abbreviate(db, 7).name()
+ + (mode1.equals(mode2) ? " " + mode1 : ""));
+ out.println("--- " + (isNew ? "/dev/null" : name1));
+ out.println("+++ " + (isDelete ? "/dev/null" : name2));
+ RawText a = getRawText(id1);
+ RawText b = getRawText(id2);
+ MyersDiff diff = new MyersDiff(a, b);
+ fmt.formatEdits(out, a, b, diff.getEdits());
+ }
+
+ private RawText getRawText(ObjectId id) throws IOException {
+ if (id.equals(id.zeroId()))
+ return new RawText(new byte[] { });
+ return new RawText(db.openBlob(id).getCachedBytes());
+ }
+}
+
diff --git a/org.spearce.jgit/src/org/spearce/jgit/diff/DiffFormatter.java b/org.spearce.jgit/src/org/spearce/jgit/diff/DiffFormatter.java
index fa86737..fda3f4c 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/diff/DiffFormatter.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/diff/DiffFormatter.java
@@ -108,7 +108,7 @@ public void format(final OutputStream out, final FileHeader head,
formatEdits(out, a, b, head.toEditList());
}
- private void formatEdits(final OutputStream out, final RawText a,
+ public void formatEdits(final OutputStream out, final RawText a,
final RawText b, final EditList edits) throws IOException {
for (int curIdx = 0; curIdx < edits.size();) {
Edit curEdit = edits.get(curIdx);
--
1.6.4.297.gcb4cc
Johannes Schindelin <johannes.schindelin@gmx.de>