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authorShawn O. Pearce <spearce@spearce.org>2008-03-04 03:27:20 (GMT)
committerJunio C Hamano <gitster@pobox.com>2008-03-05 07:28:14 (GMT)
commitf0a24aa56e49a5cb03101ead0211c7080b96c9f1 (patch)
treeff9ae51a0725c8843174d73e59018dc792ad594a
parentcf7f929a10f141d319d47c68646c88d5911de777 (diff)
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git-pack-objects: Automatically pack annotated tags if object was packed
The new option "--include-tag" allows the caller to request that any annotated tag be included into the packfile if the object the tag references was also included as part of the packfile. This option can be useful on the server side of a native git transport, where the server knows what commits it is including into a packfile to update the client. If new annotated tags have been introduced then we can also include them in the packfile, saving the client from needing to request them through a second connection. This change only introduces the backend option and provides a test. Protocol extensions to make this useful in fetch-pack/upload-pack are still necessary to activate the logic during transport. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--Documentation/git-pack-objects.txt5
-rw-r--r--builtin-pack-objects.c24
-rwxr-xr-xt/t5305-include-tag.sh84
3 files changed, 111 insertions, 2 deletions
diff --git a/Documentation/git-pack-objects.txt b/Documentation/git-pack-objects.txt
index 5c1bd3b..eed0a94 100644
--- a/Documentation/git-pack-objects.txt
+++ b/Documentation/git-pack-objects.txt
@@ -73,6 +73,11 @@ base-name::
as if all refs under `$GIT_DIR/refs` are specified to be
included.
+--include-tag::
+ Include unasked-for annotated tags if the object they
+ reference was included in the resulting packfile. This
+ can be useful to send new tags to native git clients.
+
--window=[N], --depth=[N]::
These two options affect how the objects contained in
the pack are stored using delta compression. The
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index 2799e68..f504cff 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -15,6 +15,7 @@
#include "revision.h"
#include "list-objects.h"
#include "progress.h"
+#include "refs.h"
#ifdef THREADED_DELTA_SEARCH
#include "thread-utils.h"
@@ -27,7 +28,8 @@ git-pack-objects [{ -q | --progress | --all-progress }] \n\
[--window=N] [--window-memory=N] [--depth=N] \n\
[--no-reuse-delta] [--no-reuse-object] [--delta-base-offset] \n\
[--threads=N] [--non-empty] [--revs [--unpacked | --all]*] [--reflog] \n\
- [--stdout | base-name] [--keep-unreachable] [<ref-list | <object-list]";
+ [--stdout | base-name] [--include-tag] [--keep-unreachable] \n\
+ [<ref-list | <object-list]";
struct object_entry {
struct pack_idx_entry idx;
@@ -63,7 +65,7 @@ static struct pack_idx_entry **written_list;
static uint32_t nr_objects, nr_alloc, nr_result, nr_written;
static int non_empty;
-static int no_reuse_delta, no_reuse_object, keep_unreachable;
+static int no_reuse_delta, no_reuse_object, keep_unreachable, include_tag;
static int local;
static int incremental;
static int allow_ofs_delta;
@@ -1630,6 +1632,18 @@ static void ll_find_deltas(struct object_entry **list, unsigned list_size,
#define ll_find_deltas(l, s, w, d, p) find_deltas(l, &s, w, d, p)
#endif
+static int add_ref_tag(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+{
+ unsigned char peeled[20];
+
+ if (!prefixcmp(path, "refs/tags/") && /* is a tag? */
+ !peel_ref(path, peeled) && /* peelable? */
+ !is_null_sha1(peeled) && /* annotated tag? */
+ locate_object_entry(peeled)) /* object packed? */
+ add_object_entry(sha1, OBJ_TAG, NULL, 0);
+ return 0;
+}
+
static void prepare_pack(int window, int depth)
{
struct object_entry **delta_list;
@@ -2033,6 +2047,10 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
keep_unreachable = 1;
continue;
}
+ if (!strcmp("--include-tag", arg)) {
+ include_tag = 1;
+ continue;
+ }
if (!strcmp("--unpacked", arg) ||
!prefixcmp(arg, "--unpacked=") ||
!strcmp("--reflog", arg) ||
@@ -2109,6 +2127,8 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
rp_av[rp_ac] = NULL;
get_object_list(rp_ac, rp_av);
}
+ if (include_tag && nr_result)
+ for_each_ref(add_ref_tag, NULL);
stop_progress(&progress_state);
if (non_empty && !nr_result)
diff --git a/t/t5305-include-tag.sh b/t/t5305-include-tag.sh
new file mode 100755
index 0000000..0db2754
--- /dev/null
+++ b/t/t5305-include-tag.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+test_description='git-pack-object --include-tag'
+. ./test-lib.sh
+
+TRASH=`pwd`
+
+test_expect_success setup '
+ echo c >d &&
+ git update-index --add d &&
+ tree=`git write-tree` &&
+ commit=`git commit-tree $tree </dev/null` &&
+ echo "object $commit" >sig &&
+ echo "type commit" >>sig &&
+ echo "tag mytag" >>sig &&
+ echo "tagger $(git var GIT_COMMITTER_IDENT)" >>sig &&
+ echo >>sig &&
+ echo "our test tag" >>sig &&
+ tag=`git mktag <sig` &&
+ rm d sig &&
+ git update-ref refs/tags/mytag $tag && {
+ echo $tree &&
+ echo $commit &&
+ git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
+ } >obj-list
+'
+
+rm -rf clone.git
+test_expect_success 'pack without --include-tag' '
+ packname_1=$(git pack-objects \
+ --window=0 \
+ test-1 <obj-list)
+'
+
+test_expect_success 'unpack objects' '
+ (
+ GIT_DIR=clone.git &&
+ export GIT_DIR &&
+ git init &&
+ git unpack-objects -n <test-1-${packname_1}.pack &&
+ git unpack-objects <test-1-${packname_1}.pack
+ )
+'
+
+test_expect_success 'check unpacked result (have commit, no tag)' '
+ git rev-list --objects $commit >list.expect &&
+ (
+ GIT_DIR=clone.git &&
+ export GIT_DIR &&
+ test_must_fail git cat-file -e $tag &&
+ git rev-list --objects $commit
+ ) >list.actual &&
+ git diff list.expect list.actual
+'
+
+rm -rf clone.git
+test_expect_success 'pack with --include-tag' '
+ packname_1=$(git pack-objects \
+ --window=0 \
+ --include-tag \
+ test-2 <obj-list)
+'
+
+test_expect_success 'unpack objects' '
+ (
+ GIT_DIR=clone.git &&
+ export GIT_DIR &&
+ git init &&
+ git unpack-objects -n <test-2-${packname_1}.pack &&
+ git unpack-objects <test-2-${packname_1}.pack
+ )
+'
+
+test_expect_success 'check unpacked result (have commit, have tag)' '
+ git rev-list --objects mytag >list.expect &&
+ (
+ GIT_DIR=clone.git &&
+ export GIT_DIR &&
+ git rev-list --objects $tag
+ ) >list.actual &&
+ git diff list.expect list.actual
+'
+
+test_done