On Wed, Oct 29, 2014 at 12:16:05PM -0700, Junio C Hamano wrote:
> Probably three helper functions:
>
> - The first is to find tops and bottoms (this translates fuzzy
> specifications such as "--since 30.days" into a more concrete
> revision range "^A ^B ... Z" to establish bundle prerequisites),
> which is done by running a "rev-list --boundary".
>
> - The second is to show refs, while paying attention to things like
> "--10 maint master" which may result in the tip of 'maint' not
> being shown at all. I am not sure if this part can/should take
> advantage of revs.cmdline, though.
>
> - The last is to create the actual pack data.
>
> I agree with your analysis on the change in column.c and trailer.c
I was not planning to work on this, but since you did the first and
third bullet points, I think it makes sense to start the second one with
this cleanup:
-- >8 --
Subject: bundle: split out ref writing from bundle_create
The bundle_create() function has a number of logical steps:
process the input, write the refs, and write the packfile.
Recent commits split the first and third into separate
sub-functions. It's worth splitting the middle step out,
too, if only because it makes the progression of the steps
more obvious.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
Obviously this should be dropped if somebody is actively working on the
revs.cmdline thing you mentioned, as it would conflict horribly. But I
think it is a nice step for somebody working on it later, because the
revs.cmdline changes should be isolated to write_bundle_refs.
bundle.c | 97 ++++++++++++++++++++++++++++++++++++++--------------------------
1 file changed, 58 insertions(+), 39 deletions(-)
diff --git a/bundle.c b/bundle.c
index 0ca8737..ca4803b 100644
--- a/bundle.c
+++ b/bundle.c
@@ -310,43 +310,22 @@ static int compute_and_write_prerequistes(int bundle_fd,
return 0;
}
-int create_bundle(struct bundle_header *header, const char *path,
- int argc, const char **argv)
+/*
+ * Write out bundle refs based on the tips already
+ * parsed into revs.pending. As a side effect, may
+ * manipulate revs.pending to include additional
+ * necessary objects (like tags).
+ *
+ * Returns the number of refs written, or negative
+ * on error.
+ */
+static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
{
- static struct lock_file lock;
- int bundle_fd = -1;
- int bundle_to_stdout;
- int i, ref_count = 0;
- struct rev_info revs;
-
- bundle_to_stdout = !strcmp(path, "-");
- if (bundle_to_stdout)
- bundle_fd = 1;
- else
- bundle_fd = hold_lock_file_for_update(&lock, path,
- LOCK_DIE_ON_ERROR);
-
- /* write signature */
- write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
-
- /* init revs to list objects for pack-objects later */
- save_commit_buffer = 0;
- init_revisions(&revs, NULL);
-
- /* write prerequisites */
- if (compute_and_write_prerequistes(bundle_fd, &revs, argc, argv))
- return -1;
-
- /* write references */
- argc = setup_revisions(argc, argv, &revs, NULL);
-
- if (argc > 1)
- return error(_("unrecognized argument: %s"), argv[1]);
-
- object_array_remove_duplicates(&revs.pending);
+ int i;
+ int ref_count = 0;
- for (i = 0; i < revs.pending.nr; i++) {
- struct object_array_entry *e = revs.pending.objects + i;
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object_array_entry *e = revs->pending.objects + i;
unsigned char sha1[20];
char *ref;
const char *display_ref;
@@ -361,7 +340,7 @@ int create_bundle(struct bundle_header *header, const char *path,
display_ref = (flag & REF_ISSYMREF) ? e->name : ref;
if (e->item->type == OBJ_TAG &&
- !is_tag_in_date_range(e->item, &revs)) {
+ !is_tag_in_date_range(e->item, revs)) {
e->item->flags |= UNINTERESTING;
continue;
}
@@ -407,7 +386,7 @@ int create_bundle(struct bundle_header *header, const char *path,
*/
obj = parse_object_or_die(sha1, e->name);
obj->flags |= SHOWN;
- add_pending_object(&revs, obj, e->name);
+ add_pending_object(revs, obj, e->name);
}
free(ref);
continue;
@@ -420,11 +399,51 @@ int create_bundle(struct bundle_header *header, const char *path,
write_or_die(bundle_fd, "\n", 1);
free(ref);
}
- if (!ref_count)
- die(_("Refusing to create empty bundle."));
/* end header */
write_or_die(bundle_fd, "\n", 1);
+ return ref_count;
+}
+
+int create_bundle(struct bundle_header *header, const char *path,
+ int argc, const char **argv)
+{
+ static struct lock_file lock;
+ int bundle_fd = -1;
+ int bundle_to_stdout;
+ int ref_count = 0;
+ struct rev_info revs;
+
+ bundle_to_stdout = !strcmp(path, "-");
+ if (bundle_to_stdout)
+ bundle_fd = 1;
+ else
+ bundle_fd = hold_lock_file_for_update(&lock, path,
+ LOCK_DIE_ON_ERROR);
+
+ /* write signature */
+ write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
+
+ /* init revs to list objects for pack-objects later */
+ save_commit_buffer = 0;
+ init_revisions(&revs, NULL);
+
+ /* write prerequisites */
+ if (compute_and_write_prerequistes(bundle_fd, &revs, argc, argv))
+ return -1;
+
+ argc = setup_revisions(argc, argv, &revs, NULL);
+
+ if (argc > 1)
+ return error(_("unrecognized argument: %s"), argv[1]);
+
+ object_array_remove_duplicates(&revs.pending);
+
+ ref_count = write_bundle_refs(bundle_fd, &revs);
+ if (!ref_count)
+ die(_("Refusing to create empty bundle."));
+ else if (ref_count < 0)
+ return -1;
/* write pack */
if (write_pack_data(bundle_fd, &lock, &revs))
--
2.1.2.596.g7379948
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