Change the submodule_strategy_to_string() function added in
3604242f080 (submodule: port init from shell to C, 2016-04-15) to
really return a "const char *". In the "SM_UPDATE_COMMAND" case it
would return a strbuf_detach().
Furthermore, this function would return NULL on SM_UPDATE_UNSPECIFIED,
so it wasn't safe to xstrdup() its return value in the general case,
or to use it in a sprintf() format as the code removed in the
preceding commit did.
But its callers would never call it with either SM_UPDATE_UNSPECIFIED
or SM_UPDATE_COMMAND. Let's have its behavior reflect how its only
user expects it to behave, and BUG() out on the rest.
By doing this we can also stop needlessly xstrdup()-ing and free()-ing
the memory for the config we're setting. We can instead always use
constant strings. We can also use the *_tmp() variant of
git_config_get_string().
Let's also rename this submodule_strategy_to_string() function to
submodule_update_type_to_string(). Now that it's only tasked with
returning a string version of the "enum submodule_update_type type".
Before it would look at the "command" field in "struct
submodule_update_strategy".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
builtin/submodule--helper.c | 10 +++++-----
submodule.c | 12 +++++-------
submodule.h | 2 +-
3 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 965196a005d..35989c81603 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -418,7 +418,8 @@ static void init_submodule(const char *path, const char *prefix,
{
const struct submodule *sub;
struct strbuf sb = STRBUF_INIT;
- char *upd = NULL, *url = NULL, *displaypath;
+ const char *upd;
+ char *url = NULL, *displaypath;
displaypath = get_submodule_displaypath(path, prefix);
@@ -474,14 +475,14 @@ static void init_submodule(const char *path, const char *prefix,
/* Copy "update" setting when it is not set yet */
strbuf_addf(&sb, "submodule.%s.update", sub->name);
- if (git_config_get_string(sb.buf, &upd) &&
+ if (git_config_get_string_tmp(sb.buf, &upd) &&
sub->update_strategy.type != SM_UPDATE_UNSPECIFIED) {
if (sub->update_strategy.type == SM_UPDATE_COMMAND) {
fprintf(stderr, _("warning: command update mode suggested for submodule '%s'\n"),
sub->name);
- upd = xstrdup("none");
+ upd = "none";
} else {
- upd = xstrdup(submodule_strategy_to_string(&sub->update_strategy));
+ upd = submodule_update_type_to_string(sub->update_strategy.type);
}
if (git_config_set_gently(sb.buf, upd))
@@ -490,7 +491,6 @@ static void init_submodule(const char *path, const char *prefix,
strbuf_release(&sb);
free(displaypath);
free(url);
- free(upd);
}
static void init_submodule_cb(const struct cache_entry *list_item, void *cb_data)
diff --git a/submodule.c b/submodule.c
index 3fa5db3ecdf..1ebda30c506 100644
--- a/submodule.c
+++ b/submodule.c
@@ -415,10 +415,9 @@ int parse_submodule_update_strategy(const char *value,
return 0;
}
-const char *submodule_strategy_to_string(const struct submodule_update_strategy *s)
+const char *submodule_update_type_to_string(enum submodule_update_type type)
{
- struct strbuf sb = STRBUF_INIT;
- switch (s->type) {
+ switch (type) {
case SM_UPDATE_CHECKOUT:
return "checkout";
case SM_UPDATE_MERGE:
@@ -428,12 +427,11 @@ const char *submodule_strategy_to_string(const struct submodule_update_strategy
case SM_UPDATE_NONE:
return "none";
case SM_UPDATE_UNSPECIFIED:
- return NULL;
case SM_UPDATE_COMMAND:
- strbuf_addf(&sb, "!%s", s->command);
- return strbuf_detach(&sb, NULL);
+ BUG("init_submodule() should handle type %d", type);
+ default:
+ BUG("unexpected update strategy type: %d", type);
}
- return NULL;
}
void handle_ignore_submodules_arg(struct diff_options *diffopt,
diff --git a/submodule.h b/submodule.h
index bfaa9da1868..6a9fec6de11 100644
--- a/submodule.h
+++ b/submodule.h
@@ -72,7 +72,7 @@ void die_path_inside_submodule(struct index_state *istate,
enum submodule_update_type parse_submodule_update_type(const char *value);
int parse_submodule_update_strategy(const char *value,
struct submodule_update_strategy *dst);
-const char *submodule_strategy_to_string(const struct submodule_update_strategy *s);
+const char *submodule_update_type_to_string(enum submodule_update_type type);
void handle_ignore_submodules_arg(struct diff_options *, const char *);
void show_submodule_diff_summary(struct diff_options *o, const char *path,
struct object_id *one, struct object_id *two,
--
2.37.3.1420.g76f8a3d556c
