[PATCH 20/26] upload-pack: support define shallow boundary by excluding revisions
- From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
- Date
- Apr 13, 2016, 12:55 UTC
- Message-ID
- <1460552110-5554-21-git-send-email-pclouds@gmail.com>
- In-Reply-To
- <1460552110-5554-1-git-send-email-pclouds@gmail.com>
This should allow the user to say "create a shallow clone of this branch after version <some-tag>".
Short refs are accepted and expanded at the server side with expand_ref() because we cannot expand (unknown) refs from the client side.
Like deepen-since, deepen-not cannot be used with deepen. But deepen-not can be mixed with deepen-since. The result is exactly how you do the command "git rev-list --since=... --not ref".
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> --- Documentation/technical/pack-protocol.txt | 3 ++- Documentation/technical/protocol-capabilities.txt | 9 +++++++++ upload-pack.c | 23 +++++++++++++++++++++-- 3 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt index 9251df1..dee33a6 100644 --- a/Documentation/technical/pack-protocol.txt +++ b/Documentation/technical/pack-protocol.txt @@ -220,7 +220,8 @@ out of what the server said it could do with the first 'want' line. shallow-line = PKT-LINE("shallow" SP obj-id) depth-request = PKT-LINE("deepen" SP depth) / - PKT-LINE("deepen-since" SP timestamp) + PKT-LINE("deepen-since" SP timestamp) / + PKT-LINE("deepen-not" SP ref) first-want = PKT-LINE("want" SP obj-id SP capability-list) additional-want = PKT-LINE("want" SP obj-id) diff --git a/Documentation/technical/protocol-capabilities.txt b/Documentation/technical/protocol-capabilities.txt index f08cc4e..0e6b57d 100644 --- a/Documentation/technical/protocol-capabilities.txt +++ b/Documentation/technical/protocol-capabilities.txt @@ -188,6 +188,15 @@ specific time, instead of depth. Internally it's equivalent of doing "rev-list --max-age=<timestamp>" on the server side. "deepen-since" cannot be used with "deepen". +deepen-not +---------- + +This capability adds "deepen-not" command to fetch-pack/upload-pack +protocol so the client can request shallow clones that are cut at a +specific revision, instead of depth. Internally it's equivalent of +doing "rev-list --not <rev>" on the server side. "deepen-not" +cannot be used with "deepen", but can be used with "deepen-since". + no-progress ----------- diff --git a/upload-pack.c b/upload-pack.c index 58c0936..95a0bfb 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -628,6 +628,7 @@ static void deepen_by_rev_list(int ac, const char **av, static void receive_needs(void) { struct object_array shallows = OBJECT_ARRAY_INIT; + struct string_list deepen_not = STRING_LIST_INIT_DUP; int depth = 0; int has_non_tip = 0; unsigned long deepen_since = 0; @@ -678,6 +679,16 @@ static void receive_needs(void) deepen_rev_list = 1; continue; } + if (skip_prefix(line, "deepen-not ", &arg)) { + char *ref = NULL; + unsigned char sha1[20]; + if (expand_ref(arg, strlen(arg), sha1, &ref) != 1) + die("git upload-pack: ambiguous deepen-not: %s", line); + string_list_append(&deepen_not, ref); + free(ref); + deepen_rev_list = 1; + continue; + } if (!skip_prefix(line, "want ", &arg) || get_sha1_hex(arg, sha1_buf)) die("git upload-pack: protocol error, " @@ -732,7 +743,7 @@ static void receive_needs(void) if (depth == 0 && !deepen_rev_list && shallows.nr == 0) return; if (depth > 0 && deepen_rev_list) - die("git upload-pack: deepen and deepen-since cannot be used together"); + die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); if (depth > 0) deepen(depth, &shallows); else if (deepen_rev_list) { @@ -742,6 +753,14 @@ static void receive_needs(void) argv_array_push(&av, "rev-list"); if (deepen_since) argv_array_pushf(&av, "--max-age=%lu", deepen_since); + if (deepen_not.nr) { + argv_array_push(&av, "--not"); + for (i = 0; i < deepen_not.nr; i++) { + struct string_list_item *s = deepen_not.items + i; + argv_array_push(&av, s->string); + } + argv_array_push(&av, "--not"); + } for (i = 0; i < want_obj.nr; i++) { struct object *o = want_obj.objects[i].item; argv_array_push(&av, oid_to_hex(&o->oid)); @@ -797,7 +816,7 @@ static int send_ref(const char *refname, const struct object_id *oid, int flag, void *cb_data) { static const char *capabilities = "multi_ack thin-pack side-band" - " side-band-64k ofs-delta shallow deepen-since no-progress" + " side-band-64k ofs-delta shallow deepen-since deepen-not no-progress" " include-tag multi_ack_detailed"; const char *refname_nons = strip_namespace(refname); struct object_id peeled;
-- 2.8.0.rc0.210.gd302cd2