wt_prefix=$(git rev-parse --show-prefix)
cd_to_toplevel
+# Restrict ourselves to a vanilla subset of protocols; the URLs
+# we get are under control of a remote repository, and we do not
+# want them kicking off arbitrary git-remote-* programs.
+#
+# If the user has already specified a set of allowed protocols,
+# we assume they know what they're doing and use that instead.
+: ${GIT_ALLOW_PROTOCOL=file:git:http:https:ssh}
+export GIT_ALLOW_PROTOCOL
+
command=
branch=
force=
printf '%s' "${value:-$default}"
}
-#
-# Clone a submodule
-#
-# $1 = submodule path
-# $2 = submodule name
-# $3 = URL to clone
-# $4 = reference repository to reuse (empty for independent)
-# $5 = depth argument for shallow clones (empty for deep)
-#
-# Prior to calling, cmd_update checks that a possibly existing
-# path is not a git repository.
-# Likewise, cmd_add checks that path does not exist at all,
-# since it is the location of a new submodule.
-#
-module_clone()
-{
- sm_path=$1
- name=$2
- url=$3
- reference="$4"
- depth="$5"
- quiet=
- if test -n "$GIT_QUIET"
- then
- quiet=-q
- fi
-
- gitdir=
- gitdir_base=
- base_name=$(dirname "$name")
-
- gitdir=$(git rev-parse --git-dir)
- gitdir_base="$gitdir/modules/$base_name"
- gitdir="$gitdir/modules/$name"
-
- if test -d "$gitdir"
- then
- mkdir -p "$sm_path"
- rm -f "$gitdir/index"
- else
- mkdir -p "$gitdir_base"
- (
- clear_local_git_env
- git clone $quiet ${depth:+"$depth"} -n ${reference:+"$reference"} \
- --separate-git-dir "$gitdir" "$url" "$sm_path"
- ) ||
- die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
- fi
-
- # We already are at the root of the work tree but cd_to_toplevel will
- # resolve any symlinks that might be present in $PWD
- a=$(cd_to_toplevel && cd "$gitdir" && pwd)/
- b=$(cd_to_toplevel && cd "$sm_path" && pwd)/
- # Remove all common leading directories after a sanity check
- if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
- die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
- fi
- while test "${a%%/*}" = "${b%%/*}"
- do
- a=${a#*/}
- b=${b#*/}
- done
- # Now chop off the trailing '/'s that were added in the beginning
- a=${a%/}
- b=${b%/}
-
- # Turn each leading "*/" component into "../"
- rel=$(printf '%s\n' "$b" | sed -e 's|[^/][^/]*|..|g')
- printf '%s\n' "gitdir: $rel/$a" >"$sm_path/.git"
-
- rel=$(printf '%s\n' "$a" | sed -e 's|[^/][^/]*|..|g')
- (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
-}
-
isnumber()
{
n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
echo "$(eval_gettext "Reactivating local git directory for submodule '\$sm_name'.")"
fi
fi
- module_clone "$sm_path" "$sm_name" "$realrepo" "$reference" "$depth" || exit
+ git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" "$reference" "$depth" || exit
(
clear_local_git_env
cd "$sm_path" &&
done
}
+is_tip_reachable () (
+ clear_local_git_env
+ cd "$1" &&
+ rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
+ test -z "$rev"
+)
+
+fetch_in_submodule () (
+ clear_local_git_env
+ cd "$1" &&
+ case "$2" in
+ '')
+ git fetch ;;
+ *)
+ git fetch $(get_default_remote) "$2" ;;
+ esac
+)
+
#
# Update each submodule path to correct revision, using clone and checkout as needed
#
if ! test -d "$sm_path"/.git && ! test -f "$sm_path"/.git
then
- module_clone "$sm_path" "$name" "$url" "$reference" "$depth" || exit
+ git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$prefix" --path "$sm_path" --name "$name" --url "$url" "$reference" "$depth" || exit
cloned_modules="$cloned_modules;$name"
subsha1=
else
then
# Run fetch only if $sha1 isn't present or it
# is not reachable from a ref.
- (clear_local_git_env; cd "$sm_path" &&
- ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
- test -z "$rev") || git-fetch)) ||
+ is_tip_reachable "$sm_path" "$sha1" ||
+ fetch_in_submodule "$sm_path" ||
die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
+
+ # Now we tried the usual fetch, but $sha1 may
+ # not be reachable from any of the refs
+ is_tip_reachable "$sm_path" "$sha1" ||
+ fetch_in_submodule "$sm_path" "$sha1" ||
+ die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain $sha1. Direct fetching of that commit failed.")"
fi
# Is this something we just cloned?
;;
!*)
command="${update_module#!}"
- die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$prefix\$sm_path'")"
+ die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$prefix\$sm_path'")"
say_msg="$(eval_gettext "Submodule path '\$prefix\$sm_path': '\$command \$sha1'")"
must_die_on_failure=yes
;;