fetch: use argv_array instead of hand-building arrays
Fetch invokes itself recursively when recursing into
submodules or handling "fetch --multiple". In both cases, it
builds the child's command line by pushing options onto a
statically-sized array. In both cases, the array is
currently just big enough to handle the largest possible
case. However, this technique is brittle and error-prone, so
let's replace it with a dynamic argv_array.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 1c8cb62..d5442e1 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -14,6 +14,7 @@
#include "transport.h"
#include "submodule.h"
#include "connected.h"
+#include "argv-array.h"
static const char * const builtin_fetch_usage[] = {
"git fetch [<options>] [<repository> [<refspec>...]]",
@@ -841,38 +842,35 @@
return 1;
}
-static void add_options_to_argv(int *argc, const char **argv)
+static void add_options_to_argv(struct argv_array *argv)
{
if (dry_run)
- argv[(*argc)++] = "--dry-run";
+ argv_array_push(argv, "--dry-run");
if (prune)
- argv[(*argc)++] = "--prune";
+ argv_array_push(argv, "--prune");
if (update_head_ok)
- argv[(*argc)++] = "--update-head-ok";
+ argv_array_push(argv, "--update-head-ok");
if (force)
- argv[(*argc)++] = "--force";
+ argv_array_push(argv, "--force");
if (keep)
- argv[(*argc)++] = "--keep";
+ argv_array_push(argv, "--keep");
if (recurse_submodules == RECURSE_SUBMODULES_ON)
- argv[(*argc)++] = "--recurse-submodules";
+ argv_array_push(argv, "--recurse-submodules");
else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
- argv[(*argc)++] = "--recurse-submodules=on-demand";
+ argv_array_push(argv, "--recurse-submodules=on-demand");
if (verbosity >= 2)
- argv[(*argc)++] = "-v";
+ argv_array_push(argv, "-v");
if (verbosity >= 1)
- argv[(*argc)++] = "-v";
+ argv_array_push(argv, "-v");
else if (verbosity < 0)
- argv[(*argc)++] = "-q";
+ argv_array_push(argv, "-q");
}
static int fetch_multiple(struct string_list *list)
{
int i, result = 0;
- const char *argv[12] = { "fetch", "--append" };
- int argc = 2;
-
- add_options_to_argv(&argc, argv);
+ struct argv_array argv = ARGV_ARRAY_INIT;
if (!append && !dry_run) {
int errcode = truncate_fetch_head();
@@ -880,18 +878,22 @@
return errcode;
}
+ argv_array_pushl(&argv, "fetch", "--append", NULL);
+ add_options_to_argv(&argv);
+
for (i = 0; i < list->nr; i++) {
const char *name = list->items[i].string;
- argv[argc] = name;
- argv[argc + 1] = NULL;
+ argv_array_push(&argv, name);
if (verbosity >= 0)
printf(_("Fetching %s\n"), name);
- if (run_command_v_opt(argv, RUN_GIT_CMD)) {
+ if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
error(_("Could not fetch %s"), name);
result = 1;
}
+ argv_array_pop(&argv);
}
+ argv_array_clear(&argv);
return result;
}
@@ -1007,13 +1009,14 @@
}
if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
- const char *options[10];
- int num_options = 0;
- add_options_to_argv(&num_options, options);
- result = fetch_populated_submodules(num_options, options,
+ struct argv_array options = ARGV_ARRAY_INIT;
+
+ add_options_to_argv(&options);
+ result = fetch_populated_submodules(options.argc, options.argv,
submodule_prefix,
recurse_submodules,
verbosity < 0);
+ argv_array_clear(&options);
}
/* All names were strdup()ed or strndup()ed */
