Teach fetch-pack/upload-pack about --include-tag

The new protocol extension "include-tag" allows the client side
of the connection (fetch-pack) to request that the server side of the
native git protocol (upload-pack / pack-objects) use --include-tag
as it prepares the packfile, thus ensuring that an annotated tag object
will be included in the resulting packfile if the object it refers to
was also included into the packfile.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-fetch-pack.txt b/Documentation/git-fetch-pack.txt
index 2b8ffe5324c427d3b80f5b21d4a9d2ef8bfea4fd..57598eb0566c8eabc3537fb67b7841c65bcf5c2c 100644 (file)
--- a/Documentation/git-fetch-pack.txt
+++ b/Documentation/git-fetch-pack.txt
@@ -8,7 +8,7 @@ git-fetch-pack - Receive missing objects from another repository
 
 SYNOPSIS
 --------
-'git-fetch-pack' [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]
+'git-fetch-pack' [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]
 
 DESCRIPTION
 -----------
@@ -45,6 +45,12 @@ OPTIONS
        Spend extra cycles to minimize the number of objects to be sent.
        Use it on slower connection.
 
+\--include-tag::
+       If the remote side supports it, annotated tags objects will
+       be downloaded on the same connection as the other objects if
+       the object the tag references is downloaded.  The caller must
+       otherwise determine the tags this option made available.
+
 \--upload-pack=<git-upload-pack>::
        Use this to specify the path to 'git-upload-pack' on the
        remote side, if is not found on your $PATH.

diff --git a/builtin-fetch-pack.c b/builtin-fetch-pack.c
index b23e886d757664208f22bdfebbc21e4af103f69e..34fb6d5c61e723278e70fe5949ed5a529904d958 100644 (file)
--- a/builtin-fetch-pack.c
+++ b/builtin-fetch-pack.c
@@ -18,7 +18,7 @@ static struct fetch_pack_args args = {
 };
 
 static const char fetch_pack_usage[] =
-"git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]";
+"git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]";
 
 #define COMPLETE       (1U << 0)
 #define COMMON         (1U << 1)
@@ -174,13 +174,14 @@ static int find_common(int fd[2], unsigned char *result_sha1,
                }
 
                if (!fetching)
-                       packet_write(fd[1], "want %s%s%s%s%s%s%s\n",
+                       packet_write(fd[1], "want %s%s%s%s%s%s%s%s\n",
                                     sha1_to_hex(remote),
                                     (multi_ack ? " multi_ack" : ""),
                                     (use_sideband == 2 ? " side-band-64k" : ""),
                                     (use_sideband == 1 ? " side-band" : ""),
                                     (args.use_thin_pack ? " thin-pack" : ""),
                                     (args.no_progress ? " no-progress" : ""),
+                                    (args.include_tag ? " include-tag" : ""),
                                     " ofs-delta");
                else
                        packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
@@ -680,6 +681,10 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
                                args.use_thin_pack = 1;
                                continue;
                        }
+                       if (!strcmp("--include-tag", arg)) {
+                               args.include_tag = 1;
+                               continue;
+                       }
                        if (!strcmp("--all", arg)) {
                                args.fetch_all = 1;
                                continue;

diff --git a/fetch-pack.h b/fetch-pack.h
index 8d35ef60bf6d975939362a9c01ece4026140f8c9..8bd9c32561e79d194d27fa10cc98a26aa2cb673c 100644 (file)
--- a/fetch-pack.h
+++ b/fetch-pack.h
@@ -12,7 +12,8 @@ struct fetch_pack_args
                use_thin_pack:1,
                fetch_all:1,
                verbose:1,
-               no_progress:1;
+               no_progress:1,
+               include_tag:1;
 };
 
 struct ref *fetch_pack(struct fetch_pack_args *args,

diff --git a/upload-pack.c b/upload-pack.c
index 660134a30dc6e4bc2b30e8137ca82e6e2db453d4..b46dd365ea289c6d397dc6fc994b6ba4227886fc 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -27,7 +27,8 @@ static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=n
 static unsigned long oldest_have;
 
 static int multi_ack, nr_our_refs;
-static int use_thin_pack, use_ofs_delta, no_progress;
+static int use_thin_pack, use_ofs_delta, use_include_tag;
+static int no_progress;
 static struct object_array have_obj;
 static struct object_array want_obj;
 static unsigned int timeout;
@@ -162,6 +163,8 @@ static void create_pack_file(void)
                argv[arg++] = "--progress";
        if (use_ofs_delta)
                argv[arg++] = "--delta-base-offset";
+       if (use_include_tag)
+               argv[arg++] = "--include-tag";
        argv[arg++] = NULL;
 
        memset(&pack_objects, 0, sizeof(pack_objects));
@@ -494,6 +497,8 @@ static void receive_needs(void)
                        use_sideband = DEFAULT_PACKET_MAX;
                if (strstr(line+45, "no-progress"))
                        no_progress = 1;
+               if (strstr(line+45, "include-tag"))
+                       use_include_tag = 1;
 
                /* We have sent all our refs already, and the other end
                 * should have chosen out of them; otherwise they are
@@ -565,7 +570,8 @@ static void receive_needs(void)
 static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
        static const char *capabilities = "multi_ack thin-pack side-band"
-               " side-band-64k ofs-delta shallow no-progress";
+               " side-band-64k ofs-delta shallow no-progress"
+               " include-tag";
        struct object *o = parse_object(sha1);
 
        if (!o)