This implements the helper `module_name` in C instead of shell,
yielding a nice performance boost.
Before this patch, I measured a time (best out of three):
$ time ./t7400-submodule-basic.sh >/dev/null
real 0m11.066s
user 0m3.348s
sys 0m8.534s
With this patch applied I measured (also best out of three)
$ time ./t7400-submodule-basic.sh >/dev/null
real 0m10.063s
user 0m3.044s
sys 0m7.487s
Signed-off-by: Stefan Beller <sbel...@google.com>
---
builtin/submodule--helper.c | 28 +++++++++++++++++++++++++++-
git-submodule.sh | 32 +++++++-------------------------
2 files changed, 34 insertions(+), 26 deletions(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 610ec51..80d13f5 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -5,6 +5,9 @@
#include "pathspec.h"
#include "dir.h"
#include "utf8.h"
+#include "submodule.h"
+#include "submodule-config.h"
+#include "string-list.h"
static const struct cache_entry **ce_entries;
static int ce_alloc, ce_used;
@@ -101,6 +104,26 @@ static int module_list(int argc, const char **argv, const
char *prefix)
return 0;
}
+static int module_name(int argc, const char **argv, const char *prefix)
+{
+ const char *name;
+ const struct submodule *sub;
+
+ if (argc != 1)
+ usage("git submodule--helper module_name <path>\n");
+
+ gitmodules_config();
+ sub = submodule_from_path(null_sha1, argv[0]);
+
+ if (!sub)
+ die("No submodule mapping found in .gitmodules for path '%s'",
argv[0]);
+
+ name = sub->name;
+ printf("%s\n", name);
+
+ return 0;
+}
+
int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
{
if (argc < 2)
@@ -109,6 +132,9 @@ int cmd_submodule__helper(int argc, const char **argv,
const char *prefix)
if (!strcmp(argv[1], "module_list"))
return module_list(argc - 1, argv + 1, prefix);
+ if (!strcmp(argv[1], "module_name"))
+ return module_name(argc - 2, argv + 2, prefix);
+
usage:
- usage("git submodule--helper module_list\n");
+ usage("git submodule--helper [module_list module_name]\n");
}
diff --git a/git-submodule.sh b/git-submodule.sh
index af9ecef..e6ff38d 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -178,24 +178,6 @@ get_submodule_config () {
printf '%s' "${value:-$default}"
}
-
-#
-# Map submodule path to submodule name
-#
-# $1 = path
-#
-module_name()
-{
- # Do we have "submodule.<something>.path = $1" defined in .gitmodules
file?
- sm_path="$1"
- re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
- name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
- sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
- test -z "$name" &&
- die "$(eval_gettext "No submodule mapping found in .gitmodules for path
'\$sm_path'")"
- printf '%s\n' "$name"
-}
-
#
# Clone a submodule
#
@@ -498,7 +480,7 @@ cmd_foreach()
then
displaypath=$(relative_path "$sm_path")
say "$(eval_gettext "Entering '\$prefix\$displaypath'")"
- name=$(module_name "$sm_path")
+ name=$(git submodule--helper module_name "$sm_path")
(
prefix="$prefix$sm_path/"
clear_local_git_env
@@ -554,7 +536,7 @@ cmd_init()
while read mode sha1 stage sm_path
do
die_if_unmatched "$mode"
- name=$(module_name "$sm_path") || exit
+ name=$(git submodule--helper module_name "$sm_path") || exit
displaypath=$(relative_path "$sm_path")
@@ -636,7 +618,7 @@ cmd_deinit()
while read mode sha1 stage sm_path
do
die_if_unmatched "$mode"
- name=$(module_name "$sm_path") || exit
+ name=$(git submodule--helper module_name "$sm_path") || exit
displaypath=$(relative_path "$sm_path")
@@ -758,7 +740,7 @@ cmd_update()
echo >&2 "Skipping unmerged submodule $prefix$sm_path"
continue
fi
- name=$(module_name "$sm_path") || exit
+ name=$(git submodule--helper module_name "$sm_path") || exit
url=$(git config submodule."$name".url)
branch=$(get_submodule_config "$name" branch master)
if ! test -z "$update"
@@ -1022,7 +1004,7 @@ cmd_summary() {
# Respect the ignore setting for --for-status.
if test -n "$for_status"
then
- name=$(module_name "$sm_path")
+ name=$(git submodule--helper module_name
"$sm_path")
ignore_config=$(get_submodule_config "$name"
ignore none)
test $status != A && test $ignore_config = all
&& continue
fi
@@ -1184,7 +1166,7 @@ cmd_status()
while read mode sha1 stage sm_path
do
die_if_unmatched "$mode"
- name=$(module_name "$sm_path") || exit
+ name=$(git submodule--helper module_name "$sm_path") || exit
url=$(git config submodule."$name".url)
displaypath=$(relative_path "$prefix$sm_path")
if test "$stage" = U
@@ -1261,7 +1243,7 @@ cmd_sync()
while read mode sha1 stage sm_path
do
die_if_unmatched "$mode"
- name=$(module_name "$sm_path")
+ name=$(git submodule--helper module_name "$sm_path")
url=$(git config -f .gitmodules --get submodule."$name".url)
# Possibly a url relative to parent
--
2.5.0.330.g130be8e.dirty
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