check_everything_connected(): libify
Extract the helper function and the type definition of the iterator
function it uses out of builtin/fetch.c into a separate source and a
header file.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 0ef912e..ffda063 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -13,6 +13,7 @@
#include "sigchain.h"
#include "transport.h"
#include "submodule.h"
+#include "connected.h"
static const char * const builtin_fetch_usage[] = {
"git fetch [<options>] [<repository> [<refspec>...]]",
@@ -345,71 +346,6 @@
}
}
-/*
- * Take callback data, and return next object name in the buffer.
- * When called after returning the name for the last object, return -1
- * to signal EOF, otherwise return 0.
- */
-typedef int (*sha1_iterate_fn)(void *, unsigned char [20]);
-
-/*
- * If we feed all the commits we want to verify to this command
- *
- * $ git rev-list --verify-objects --stdin --not --all
- *
- * and if it does not error out, that means everything reachable from
- * these commits locally exists and is connected to some of our
- * existing refs.
- *
- * Returns 0 if everything is connected, non-zero otherwise.
- */
-static int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
-{
- struct child_process rev_list;
- const char *argv[] = {"rev-list", "--verify-objects",
- "--stdin", "--not", "--all", NULL, NULL};
- char commit[41];
- unsigned char sha1[20];
- int err = 0;
-
- if (fn(cb_data, sha1))
- return err;
-
- if (quiet)
- argv[5] = "--quiet";
-
- memset(&rev_list, 0, sizeof(rev_list));
- rev_list.argv = argv;
- rev_list.git_cmd = 1;
- rev_list.in = -1;
- rev_list.no_stdout = 1;
- rev_list.no_stderr = quiet;
- if (start_command(&rev_list))
- return error(_("Could not run 'git rev-list'"));
-
- sigchain_push(SIGPIPE, SIG_IGN);
-
- commit[40] = '\n';
- do {
- 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));
- 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;
- }
-
- sigchain_pop(SIGPIPE);
- return finish_command(&rev_list) || err;
-}
-
static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
{
struct ref **rm = cb_data;
