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authorJohan Herland <johan@herland.net>2010-11-09 21:49:52 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-11-17 21:22:49 (GMT)
commit6abb3655efe364cf0375b5cdae2729af7562ed45 (patch)
tree71cd673957836ee63fd0a3ca6271dab5716d9454 /notes-merge.c
parent809f38c8abacdbeb7015fdeef03931568c7fddda (diff)
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git notes merge: Manual conflict resolution, part 2/2
When the notes merge conflicts in .git/NOTES_MERGE_WORKTREE have been resolved, we need to record a new notes commit on the appropriate notes ref with the resolved notes. This patch implements 'git notes merge --commit' which the user should run after resolving conflicts in the notes merge worktree. This command finalizes the notes merge by recombining the partial notes tree from part 1 with the now-resolved conflicts in the notes merge worktree in a merge commit, and updating the appropriate ref to this merge commit. In order to correctly finalize the merge, we need to keep track of three things: - The partial merge result from part 1, containing the auto-merged notes. This is now stored into a ref called .git/NOTES_MERGE_PARTIAL. - The unmerged notes. These are already stored in .git/NOTES_MERGE_WORKTREE, thanks to part 1. - The notes ref to be updated by the finalized merge result. This is now stored in a symref called .git/NOTES_MERGE_REF. In addition to "git notes merge --commit", which uses the above details to create the finalized notes merge commit, this patch also implements "git notes merge --reset", which aborts the ongoing notes merge by simply removing the files/directory described above. FTR, "git notes merge --commit" reuses "git notes merge --reset" to remove the information described above (.git/NOTES_MERGE_*) after the notes merge have been successfully finalized. The patch also contains documentation and testcases for the two new options. This patch has been improved by the following contributions: - Ævar Arnfjörð Bjarmason: Fix nonsense sentence in --commit description - Sverre Rabbelier: Rename --reset to --abort Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Thanks-to: Sverre Rabbelier <srabbelier@gmail.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'notes-merge.c')
-rw-r--r--notes-merge.c71
1 files changed, 70 insertions, 1 deletions
diff --git a/notes-merge.c b/notes-merge.c
index ada2906..a2feab6 100644
--- a/notes-merge.c
+++ b/notes-merge.c
@@ -278,7 +278,7 @@ static void check_notes_merge_worktree(struct notes_merge_options *o)
die("You have not concluded your previous "
"notes merge (%s exists).\nPlease, use "
"'git notes merge --commit' or 'git notes "
- "merge --reset' to commit/abort the "
+ "merge --abort' to commit/abort the "
"previous merge before you start a new "
"notes merge.", git_path("NOTES_MERGE_*"));
else
@@ -650,3 +650,72 @@ found_result:
result, sha1_to_hex(result_sha1));
return result;
}
+
+int notes_merge_commit(struct notes_merge_options *o,
+ struct notes_tree *partial_tree,
+ struct commit *partial_commit,
+ unsigned char *result_sha1)
+{
+ /*
+ * Iterate through files in .git/NOTES_MERGE_WORKTREE and add all
+ * found notes to 'partial_tree'. Write the updates notes tree to
+ * the DB, and commit the resulting tree object while reusing the
+ * commit message and parents from 'partial_commit'.
+ * Finally store the new commit object SHA1 into 'result_sha1'.
+ */
+ struct dir_struct dir;
+ const char *path = git_path(NOTES_MERGE_WORKTREE "/");
+ int path_len = strlen(path), i;
+ const char *msg = strstr(partial_commit->buffer, "\n\n");
+
+ OUTPUT(o, 3, "Committing notes in notes merge worktree at %.*s",
+ path_len - 1, path);
+
+ if (!msg || msg[2] == '\0')
+ die("partial notes commit has empty message");
+ msg += 2;
+
+ memset(&dir, 0, sizeof(dir));
+ read_directory(&dir, path, path_len, NULL);
+ for (i = 0; i < dir.nr; i++) {
+ struct dir_entry *ent = dir.entries[i];
+ struct stat st;
+ const char *relpath = ent->name + path_len;
+ unsigned char obj_sha1[20], blob_sha1[20];
+
+ if (ent->len - path_len != 40 || get_sha1_hex(relpath, obj_sha1)) {
+ OUTPUT(o, 3, "Skipping non-SHA1 entry '%s'", ent->name);
+ continue;
+ }
+
+ /* write file as blob, and add to partial_tree */
+ if (stat(ent->name, &st))
+ die_errno("Failed to stat '%s'", ent->name);
+ if (index_path(blob_sha1, ent->name, &st, 1))
+ die("Failed to write blob object from '%s'", ent->name);
+ if (add_note(partial_tree, obj_sha1, blob_sha1, NULL))
+ die("Failed to add resolved note '%s' to notes tree",
+ ent->name);
+ OUTPUT(o, 4, "Added resolved note for object %s: %s",
+ sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1));
+ }
+
+ create_notes_commit(partial_tree, partial_commit->parents, msg,
+ result_sha1);
+ OUTPUT(o, 4, "Finalized notes merge commit: %s",
+ sha1_to_hex(result_sha1));
+ return 0;
+}
+
+int notes_merge_abort(struct notes_merge_options *o)
+{
+ /* Remove .git/NOTES_MERGE_WORKTREE directory and all files within */
+ struct strbuf buf = STRBUF_INIT;
+ int ret;
+
+ strbuf_addstr(&buf, git_path(NOTES_MERGE_WORKTREE));
+ OUTPUT(o, 3, "Removing notes merge worktree at %s", buf.buf);
+ ret = remove_dir_recursively(&buf, 0);
+ strbuf_release(&buf);
+ return ret;
+}