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format-patch: introduce "--ignore-if-in-upstream"

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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@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Johannes Schindelin 2006-06-25 03:52:01 +02:00 committed by Junio C Hamano
parent fcb3d0adc1
commit 9c6efa366e
1 changed files with 80 additions and 0 deletions
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80
builtin-log.c
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@ -160,6 +160,71 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
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 char **argv, char **envp)
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 char **argv, char **envp)
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 char **argv, char **envp)
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;