With this flag, format-patch will try very hard not to output patches which
are already in the upstream branch.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@xxxxxx>
---
builtin-log.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 80 insertions(+), 0 deletions(-)
diff --git a/builtin-log.c b/builtin-log.c
index 5a8a50b..e78a9a4 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -160,6 +160,71 @@ static void reopen_stdout(struct commit
freopen(filename, "w", stdout);
}
+static void reset_all_objects_flags()
+{
+ int i;
+
+ for (i = 0; i < obj_allocs; i++)
+ if (objs[i])
+ objs[i]->flags = 0;
+}
+
+static int get_patch_id(struct commit *commit, struct diff_options *options,
+ unsigned char *sha1)
+{
+ diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
+ "", options);
+ diffcore_std(options);
+ return diff_flush_patch_id(options, sha1);
+}
+
+static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
+{
+ struct rev_info check_rev;
+ struct commit *commit;
+ struct object *o1, *o2;
+ unsigned flags1, flags2;
+ unsigned char sha1[20];
+
+ if (rev->pending.nr != 2)
+ die("Need exactly one range.");
+
+ o1 = rev->pending.objects[0].item;
+ flags1 = o1->flags;
+ o2 = rev->pending.objects[1].item;
+ flags2 = o2->flags;
+
+ if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
+ die("Not a range.");
+
+ diff_setup(options);
+ options->recursive = 1;
+ if (diff_setup_done(options) < 0)
+ die("diff_setup_done failed");
+
+ /* given a range a..b get all patch ids for b..a */
+ init_revisions(&check_rev);
+ o1->flags ^= UNINTERESTING;
+ o2->flags ^= UNINTERESTING;
+ add_pending_object(&check_rev, o1, "o1");
+ add_pending_object(&check_rev, o2, "o2");
+ prepare_revision_walk(&check_rev);
+
+ while ((commit = get_revision(&check_rev)) != NULL) {
+ /* ignore merges */
+ if (commit->parents && commit->parents->next)
+ continue;
+
+ if (!get_patch_id(commit, options, sha1))
+ created_object(sha1, xcalloc(1, sizeof(struct object)));
+ }
+
+ /* reset for next revision walk */
+ reset_all_objects_flags();
+ o1->flags = flags1;
+ o2->flags = flags2;
+}
+
int cmd_format_patch(int argc, const char **argv, char **envp)
{
struct commit *commit;
@@ -170,6 +235,8 @@ int cmd_format_patch(int argc, const cha
int numbered = 0;
int start_number = -1;
int keep_subject = 0;
+ int ignore_if_in_upstream = 0;
+ struct diff_options patch_id_opts;
char *add_signoff = NULL;
init_revisions(&rev);
@@ -235,6 +302,8 @@ int cmd_format_patch(int argc, const cha
rev.mime_boundary = git_version_string;
else if (!strncmp(argv[i], "--attach=", 9))
rev.mime_boundary = argv[i] + 9;
+ else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
+ ignore_if_in_upstream = 1;
else
argv[j++] = argv[i];
}
@@ -262,14 +331,25 @@ int cmd_format_patch(int argc, const cha
add_head(&rev);
}
+ if (ignore_if_in_upstream)
+ get_patch_ids(&rev, &patch_id_opts);
+
if (!use_stdout)
realstdout = fdopen(dup(1), "w");
prepare_revision_walk(&rev);
while ((commit = get_revision(&rev)) != NULL) {
+ unsigned char sha1[20];
+
/* ignore merges */
if (commit->parents && commit->parents->next)
continue;
+
+ if (ignore_if_in_upstream &&
+ !get_patch_id(commit, &patch_id_opts, sha1) &&
+ lookup_object(sha1))
+ continue;
+
nr++;
list = realloc(list, nr * sizeof(list[0]));
list[nr - 1] = commit;
--
1.4.0.g7a200-dirty
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