submodule: move core cmd_update() logic to C
This patch completes the conversion past the flag parsing of
`submodule update` by introducing a helper subcommand called
`submodule--helper update`. The behaviour of `submodule update` should
remain the same after this patch.
Prior to this patch, `submodule update` was implemented by piping the
output of `update-clone` (which clones all missing submodules, then
prints relevant information for all submodules) into
`run-update-procedure` (which reads the information and updates the
submodule tree).
With `submodule--helper update`, we iterate over the submodules and
update the submodule tree in the same process. This reuses most of
existing code structure, except that `update_submodule()` now updates
the submodule tree (instead of printing submodule information to be
consumed by another process).
Recursing on a submodule is done by calling a subprocess that launches
`submodule--helper update`, with a modified `--recursive-prefix` and
`--prefix` parameter.
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Shourya Shukla <periperidip@gmail.com>
Signed-off-by: Atharva Raykar <raykar.ath@gmail.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-submodule.sh b/git-submodule.sh
index b63a2ae..fd0b4a2 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -51,14 +51,6 @@
recommend_shallow=
filter=
-die_if_unmatched ()
-{
- if test "$1" = "#unmatched"
- then
- exit ${2:-1}
- fi
-}
-
isnumber()
{
n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
@@ -356,11 +348,14 @@
shift
done
- {
- git ${wt_prefix:+-C "$wt_prefix"} submodule--helper update-clone \
+ git ${wt_prefix:+-C "$wt_prefix"} submodule--helper update \
${GIT_QUIET:+--quiet} \
+ ${force:+--force} \
${progress:+"--progress"} \
+ ${remote:+--remote} \
+ ${recursive:+--recursive} \
${init:+--init} \
+ ${nofetch:+--no-fetch} \
${wt_prefix:+--prefix "$wt_prefix"} \
${prefix:+--recursive-prefix "$prefix"} \
${update:+--update "$update"} \
@@ -368,98 +363,13 @@
${dissociate:+"--dissociate"} \
${depth:+"$depth"} \
${require_init:+--require-init} \
+ ${dissociate:+"--dissociate"} \
$single_branch \
$recommend_shallow \
$jobs \
$filter \
-- \
- "$@" || echo "#unmatched" $?
- } | {
- err=
- while read -r quickabort sha1 just_cloned sm_path
- do
- die_if_unmatched "$quickabort" "$sha1"
-
- displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
-
- if test $just_cloned -eq 0
- then
- just_cloned=
- fi
-
- out=$(git submodule--helper run-update-procedure \
- ${wt_prefix:+--prefix "$wt_prefix"} \
- ${GIT_QUIET:+--quiet} \
- ${force:+--force} \
- ${just_cloned:+--just-cloned} \
- ${nofetch:+--no-fetch} \
- ${depth:+"$depth"} \
- ${update:+--update "$update"} \
- ${prefix:+--recursive-prefix "$prefix"} \
- ${sha1:+--oid "$sha1"} \
- ${remote:+--remote} \
- "--" \
- "$sm_path")
-
- # exit codes for run-update-procedure:
- # 0: update was successful, say command output
- # 1: update procedure failed, but should not die
- # 128: subcommand died during execution
- # 3: no update procedure was run
- res="$?"
- case $res in
- 0)
- say "$out"
- ;;
- 1)
- err="${err};$out"
- continue
- ;;
- 128)
- printf >&2 "$out"
- exit $res
- ;;
- esac
-
- if test -n "$recursive"
- then
- (
- prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
- wt_prefix=
- sanitize_submodule_env
- cd "$sm_path" &&
- eval cmd_update
- )
- res=$?
- if test $res -gt 0
- then
- die_msg="fatal: $(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
- if test $res -ne 2
- then
- err="${err};$die_msg"
- continue
- else
- die_with_status $res "$die_msg"
- fi
- fi
- fi
- done
-
- if test -n "$err"
- then
- OIFS=$IFS
- IFS=';'
- for e in $err
- do
- if test -n "$e"
- then
- echo >&2 "$e"
- fi
- done
- IFS=$OIFS
- exit 1
- fi
- }
+ "$@"
}
#
