t9300: factor out portable "head -c" replacement

diff --git a/connected.c b/connected.c
index be0253e21bec3617ad3a7f1b0afc7d2049efc4fd..bf1b12e7ecaf476304811cabc870d58fc7f3f1dd 100644 (file)
--- a/connected.c
+++ b/connected.c
@@ -25,12 +25,13 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
                                           struct transport *transport,
                                           const char *shallow_file)
 {
-       struct child_process rev_list;
+       struct child_process rev_list = CHILD_PROCESS_INIT;
        const char *argv[9];
        char commit[41];
        unsigned char sha1[20];
        int err = 0, ac = 0;
        struct packed_git *new_pack = NULL;
+       size_t base_len;
 
        if (fn(cb_data, sha1))
                return err;
@@ -38,10 +39,9 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
        if (transport && transport->smart_options &&
            transport->smart_options->self_contained_and_connected &&
            transport->pack_lockfile &&
-           ends_with(transport->pack_lockfile, ".keep")) {
+           strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
                struct strbuf idx_file = STRBUF_INIT;
-               strbuf_addstr(&idx_file, transport->pack_lockfile);
-               strbuf_setlen(&idx_file, idx_file.len - 5); /* ".keep" */
+               strbuf_add(&idx_file, transport->pack_lockfile, base_len);
                strbuf_addstr(&idx_file, ".idx");
                new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
                strbuf_release(&idx_file);
@@ -60,7 +60,6 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
                argv[ac++] = "--quiet";
        argv[ac] = NULL;
 
-       memset(&rev_list, 0, sizeof(rev_list));
        rev_list.argv = argv;
        rev_list.git_cmd = 1;
        rev_list.in = -1;
@@ -87,17 +86,14 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
                memcpy(commit, sha1_to_hex(sha1), 40);
                if (write_in_full(rev_list.in, commit, 41) < 0) {
                        if (errno != EPIPE && errno != EINVAL)
-                               error(_("failed write to rev-list: %s"),
-                                     strerror(errno));
+                               error_errno(_("failed write to rev-list"));
                        err = -1;
                        break;
                }
        } while (!fn(cb_data, sha1));
 
-       if (close(rev_list.in)) {
-               error(_("failed to close rev-list's stdin: %s"), strerror(errno));
-               err = -1;
-       }
+       if (close(rev_list.in))
+               err = error_errno(_("failed to close rev-list's stdin"));
 
        sigchain_pop(SIGPIPE);
        return finish_command(&rev_list) || err;