[PATCH] send-pack: use internal argv_array of struct child_process

[René Scharfe]

Avoid a magic number of NULL placeholder values and a magic index by
constructing the command line for pack-objects using the embedded
argv_array of the child_process.  The resulting code is shorter and
easier to extend.

Signed-off-by: Rene Scharfe <l....@web.de>
---
 send-pack.c | 28 +++++++++-------------------
 1 file changed, 9 insertions(+), 19 deletions(-)

diff --git a/send-pack.c b/send-pack.c
index a8cc6b266e..2112d3b27a 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -58,35 +58,25 @@ static int pack_objects(int fd, struct ref *refs, struct 
oid_array *extra, struc
         * the revision parameters to it via its stdin and
         * let its stdout go back to the other end.
         */
-       const char *argv[] = {
-               "pack-objects",
-               "--all-progress-implied",
-               "--revs",
-               "--stdout",
-               NULL,
-               NULL,
-               NULL,
-               NULL,
-               NULL,
-               NULL,
-       };
        struct child_process po = CHILD_PROCESS_INIT;
        FILE *po_in;
        int i;
        int rc;
 
-       i = 4;
+       argv_array_push(&po.args, "pack-objects");
+       argv_array_push(&po.args, "--all-progress-implied");
+       argv_array_push(&po.args, "--revs");
+       argv_array_push(&po.args, "--stdout");
        if (args->use_thin_pack)
-               argv[i++] = "--thin";
+               argv_array_push(&po.args, "--thin");
        if (args->use_ofs_delta)
-               argv[i++] = "--delta-base-offset";
+               argv_array_push(&po.args, "--delta-base-offset");
        if (args->quiet || !args->progress)
-               argv[i++] = "-q";
+               argv_array_push(&po.args, "-q");
        if (args->progress)
-               argv[i++] = "--progress";
+               argv_array_push(&po.args, "--progress");
        if (is_repository_shallow())
-               argv[i++] = "--shallow";
-       po.argv = argv;
+               argv_array_push(&po.args, "--shallow");
        po.in = -1;
        po.out = args->stateless_rpc ? -1 : fd;
        po.git_cmd = 1;
-- 
2.15.1