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#!/bin/sh
#
# git-submodule.sh: add, init, update or list git submodules
#
# Copyright (c) 2007 Lars Hjemli

dashless=$(basename "$0" | sed -e 's/-/ /')
USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
or: $dashless [--quiet] init [--] [<path>...]
or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
or: $dashless [--quiet] foreach [--recursive] <command>
or: $dashless [--quiet] sync [--] [<path>...]"
OPTIONS_SPEC=
. git-sh-setup
. git-sh-i18n
. git-parse-remote
require_work_tree

command=
branch=
force=
reference=
cached=
recursive=
init=
files=
nofetch=
update=
prefix=

# The function takes at most 2 arguments. The first argument is the
# URL that navigates to the submodule origin repo. When relative, this URL
# is relative to the superproject origin URL repo. The second up_path
# argument, if specified, is the relative path that navigates
# from the submodule working tree to the superproject working tree.
#
# The output of the function is the origin URL of the submodule.
#
# The output will either be an absolute URL or filesystem path (if the
# superproject origin URL is an absolute URL or filesystem path,
# respectively) or a relative file system path (if the superproject
# origin URL is a relative file system path).
#
# When the output is a relative file system path, the path is either
# relative to the submodule working tree, if up_path is specified, or to
# the superproject working tree otherwise.
resolve_relative_url ()
{
remote=$(get_default_remote)
remoteurl=$(git config "remote.$remote.url") ||
remoteurl=$(pwd) # the repository is its own authoritative upstream
url="$1"
remoteurl=${remoteurl%/}
sep=/
up_path="$2"

case "$remoteurl" in
*:*|/*)
is_relative=
;;
./*|../*)
is_relative=t
;;
*)
is_relative=t
remoteurl="./$remoteurl"
;;
esac

while test -n "$url"
do
case "$url" in
../*)
url="${url#../}"
case "$remoteurl" in
*/*)
remoteurl="${remoteurl%/*}"
;;
*:*)
remoteurl="${remoteurl%:*}"
sep=:
;;
*)
if test -z "$is_relative" || test "." = "$remoteurl"
then
die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
else
remoteurl=.
fi
;;
esac
;;
./*)
url="${url#./}"
;;
*)
break;;
esac
done
remoteurl="$remoteurl$sep${url%/}"
echo "${is_relative:+${up_path}}${remoteurl#./}"
}

#
# Get submodule info for registered submodules
# $@ = path to limit submodule list
#
module_list()
{
git ls-files --error-unmatch --stage -- "$@" |
perl -e '
my %unmerged = ();
my ($null_sha1) = ("0" x 40);
while (<STDIN>) {
chomp;
my ($mode, $sha1, $stage, $path) =
/^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
next unless $mode eq "160000";
if ($stage ne "0") {
if (!$unmerged{$path}++) {
print "$mode $null_sha1 U\t$path\n";
}
next;
}
print "$_\n";
}
'
}

#
# 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'")"
echo "$name"
}

#
# Clone a submodule
#
# 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
url=$2
reference="$3"
quiet=
if test -n "$GIT_QUIET"
then
quiet=-q
fi

gitdir=
gitdir_base=
name=$(module_name "$sm_path" 2>/dev/null)
test -n "$name" || name="$sm_path"
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"
git clone $quiet -n ${reference:+"$reference"} \
--separate-git-dir "$gitdir" "$url" "$sm_path" ||
die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
fi

a=$(cd "$gitdir" && pwd)/
b=$(cd "$sm_path" && pwd)/
# normalize Windows-style absolute paths to POSIX-style absolute paths
case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
# Remove all common leading directories after a sanity check
if test "${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=$(echo $b | sed -e 's|[^/][^/]*|..|g')
echo "gitdir: $rel/$a" >"$sm_path/.git"

rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
(clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
}

#
# Add a new submodule to the working tree, .gitmodules and the index
#
# $@ = repo path
#
# optional branch is stored in global branch variable
#
cmd_add()
{
# parse $args after "submodule ... add".
while test $# -ne 0
do
case "$1" in
-b | --branch)
case "$2" in '') usage ;; esac
branch=$2
shift
;;
-f | --force)
force=$1
;;
-q|--quiet)
GIT_QUIET=1
;;
--reference)
case "$2" in '') usage ;; esac
reference="--reference=$2"
shift
;;
--reference=*)
reference="$1"
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
shift
done

repo=$1
sm_path=$2

if test -z "$sm_path"; then
sm_path=$(echo "$repo" |
sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
fi

if test -z "$repo" -o -z "$sm_path"; then
usage
fi

# assure repo is absolute or relative to parent
case "$repo" in
./*|../*)
# dereference source url relative to parent's url
realrepo=$(resolve_relative_url "$repo") || exit
;;
*:*|/*)
# absolute url
realrepo=$repo
;;
*)
die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
;;
esac

# normalize path:
# multiple //; leading ./; /./; /../; trailing /
sm_path=$(printf '%s/\n' "$sm_path" |
sed -e '
s|//*|/|g
s|^\(\./\)*||
s|/\./|/|g
:start
s|\([^/]*\)/\.\./||
tstart
s|/*$||
')
git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
die "$(eval_gettext "'\$sm_path' already exists in the index")"

if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
then
eval_gettextln "The following path is ignored by one of your .gitignore files:
\$sm_path
Use -f if you really want to add it." >&2
exit 1
fi

# perhaps the path exists and is already a git repo, else clone it
if test -e "$sm_path"
then
if test -d "$sm_path"/.git -o -f "$sm_path"/.git
then
eval_gettextln "Adding existing repo at '\$sm_path' to the index"
else
die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
fi

else

module_clone "$sm_path" "$realrepo" "$reference" || exit
(
clear_local_git_env
cd "$sm_path" &&
# ash fails to wordsplit ${branch:+-b "$branch"...}
case "$branch" in
'') git checkout -f -q ;;
?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
esac
) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
fi
git config submodule."$sm_path".url "$realrepo"

git add $force "$sm_path" ||
die "$(eval_gettext "Failed to add submodule '\$sm_path'")"

git config -f .gitmodules submodule."$sm_path".path "$sm_path" &&
git config -f .gitmodules submodule."$sm_path".url "$repo" &&
git add --force .gitmodules ||
die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
}

#
# Execute an arbitrary command sequence in each checked out
# submodule
#
# $@ = command to execute
#
cmd_foreach()
{
# parse $args after "submodule ... foreach".
while test $# -ne 0
do
case "$1" in
-q|--quiet)
GIT_QUIET=1
;;
--recursive)
recursive=1
;;
-*)
usage
;;
*)
break
;;
esac
shift
done

toplevel=$(pwd)

# dup stdin so that it can be restored when running the external
# command in the subshell (and a recursive call to this function)
exec 3<&0

module_list |
while read mode sha1 stage sm_path
do
if test -e "$sm_path"/.git
then
say "$(eval_gettext "Entering '\$prefix\$sm_path'")"
name=$(module_name "$sm_path")
(
prefix="$prefix$sm_path/"
clear_local_git_env
# we make $path available to scripts ...
path=$sm_path
cd "$sm_path" &&
eval "$@" &&
if test -n "$recursive"
then
cmd_foreach "--recursive" "$@"
fi
) <&3 3<&- ||
die "$(eval_gettext "Stopping at '\$sm_path'; script returned non-zero status.")"
fi
done
}

#
# Register submodules in .git/config
#
# $@ = requested paths (default to all)
#
cmd_init()
{
# parse $args after "submodule ... init".
while test $# -ne 0
do
case "$1" in
-q|--quiet)
GIT_QUIET=1
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
shift
done

module_list "$@" |
while read mode sha1 stage sm_path
do
name=$(module_name "$sm_path") || exit

# Copy url setting when it is not set yet
if test -z "$(git config "submodule.$name.url")"
then
url=$(git config -f .gitmodules submodule."$name".url)
test -z "$url" &&
die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"

# Possibly a url relative to parent
case "$url" in
./*|../*)
url=$(resolve_relative_url "$url") || exit
;;
esac
git config submodule."$name".url "$url" ||
die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"

say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
fi

# Copy "update" setting when it is not set yet
upd="$(git config -f .gitmodules submodule."$name".update)"
test -z "$upd" ||
test -n "$(git config submodule."$name".update)" ||
git config submodule."$name".update "$upd" ||
die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
done
}

#
# Update each submodule path to correct revision, using clone and checkout as needed
#
# $@ = requested paths (default to all)
#
cmd_update()
{
# parse $args after "submodule ... update".
orig_flags=
while test $# -ne 0
do
case "$1" in
-q|--quiet)
GIT_QUIET=1
;;
-i|--init)
init=1
;;
-N|--no-fetch)
nofetch=1
;;
-f|--force)
force=$1
;;
-r|--rebase)
update="rebase"
;;
--reference)
case "$2" in '') usage ;; esac
reference="--reference=$2"
orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
shift
;;
--reference=*)
reference="$1"
;;
-m|--merge)
update="merge"
;;
--recursive)
recursive=1
;;
--checkout)
update="checkout"
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
shift
done

if test -n "$init"
then
cmd_init "--" "$@" || return
fi

cloned_modules=
module_list "$@" | {
err=
while read mode sha1 stage sm_path
do
if test "$stage" = U
then
echo >&2 "Skipping unmerged submodule $sm_path"
continue
fi
name=$(module_name "$sm_path") || exit
url=$(git config submodule."$name".url)
if ! test -z "$update"
then
update_module=$update
else
update_module=$(git config submodule."$name".update)
fi

if test "$update_module" = "none"
then
echo "Skipping submodule '$sm_path'"
continue
fi

if test -z "$url"
then
# Only mention uninitialized submodules when its
# path have been specified
test "$#" != "0" &&
say "$(eval_gettext "Submodule path '\$sm_path' not initialized
Maybe you want to use 'update --init'?")"
continue
fi

if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
then
module_clone "$sm_path" "$url" "$reference"|| exit
cloned_modules="$cloned_modules;$name"
subsha1=
else
subsha1=$(clear_local_git_env; cd "$sm_path" &&
git rev-parse --verify HEAD) ||
die "$(eval_gettext "Unable to find current revision in submodule path '\$sm_path'")"
fi

if test "$subsha1" != "$sha1"
then
subforce=$force
# If we don't already have a -f flag and the submodule has never been checked out
if test -z "$subsha1" -a -z "$force"
then
subforce="-f"
fi

if test -z "$nofetch"
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)) ||
die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
fi

# Is this something we just cloned?
case ";$cloned_modules;" in
*";$name;"*)
# then there is no local change to integrate
update_module= ;;
esac

must_die_on_failure=
case "$update_module" in
rebase)
command="git rebase"
die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$sm_path'")"
say_msg="$(eval_gettext "Submodule path '\$sm_path': rebased into '\$sha1'")"
must_die_on_failure=yes
;;
merge)
command="git merge"
die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$sm_path'")"
say_msg="$(eval_gettext "Submodule path '\$sm_path': merged in '\$sha1'")"
must_die_on_failure=yes
;;
*)
command="git checkout $subforce -q"
die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$sm_path'")"
say_msg="$(eval_gettext "Submodule path '\$sm_path': checked out '\$sha1'")"
;;
esac

if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
then
say "$say_msg"
elif test -n "$must_die_on_failure"
then
die_with_status 2 "$die_msg"
else
err="${err};$die_msg"
continue
fi
fi

if test -n "$recursive"
then
(clear_local_git_env; cd "$sm_path" && eval cmd_update "$orig_flags")
res=$?
if test $res -gt 0
then
die_msg="$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
if test $res -eq 1
then
err="${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
}
}

set_name_rev () {
revname=$( (
clear_local_git_env
cd "$1" && {
git describe "$2" 2>/dev/null ||
git describe --tags "$2" 2>/dev/null ||
git describe --contains "$2" 2>/dev/null ||
git describe --all --always "$2"
}
) )
test -z "$revname" || revname=" ($revname)"
}
#
# Show commit summary for submodules in index or working tree
#
# If '--cached' is given, show summary between index and given commit,
# or between working tree and given commit
#
# $@ = [commit (default 'HEAD'),] requested paths (default all)
#
cmd_summary() {
summary_limit=-1
for_status=
diff_cmd=diff-index

# parse $args after "submodule ... summary".
while test $# -ne 0
do
case "$1" in
--cached)
cached="$1"
;;
--files)
files="$1"
;;
--for-status)
for_status="$1"
;;
-n|--summary-limit)
if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
then
:
else
usage
fi
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
shift
done

test $summary_limit = 0 && return

if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
then
head=$rev
test $# = 0 || shift
elif test -z "$1" -o "$1" = "HEAD"
then
# before the first commit: compare with an empty tree
head=$(git hash-object -w -t tree --stdin </dev/null)
test -z "$1" || shift
else
head="HEAD"
fi

if [ -n "$files" ]
then
test -n "$cached" &&
die "$(gettext -- "--cached cannot be used with --files")"
diff_cmd=diff-files
head=
fi

cd_to_toplevel
# Get modified modules cared by user
modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
sane_egrep '^:([0-7]* )?160000' |
while read mod_src mod_dst sha1_src sha1_dst status name
do
# Always show modules deleted or type-changed (blob<->module)
test $status = D -o $status = T && echo "$name" && continue
# Also show added or modified modules which are checked out
GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
echo "$name"
done
)

test -z "$modules" && return

git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
sane_egrep '^:([0-7]* )?160000' |
cut -c2- |
while read mod_src mod_dst sha1_src sha1_dst status name
do
if test -z "$cached" &&
test $sha1_dst = 0000000000000000000000000000000000000000
then
case "$mod_dst" in
160000)
sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
;;
100644 | 100755 | 120000)
sha1_dst=$(git hash-object $name)
;;
000000)
;; # removed
*)
# unexpected type
eval_gettextln "unexpected mode \$mod_dst" >&2
continue ;;
esac
fi
missing_src=
missing_dst=

test $mod_src = 160000 &&
! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
missing_src=t

test $mod_dst = 160000 &&
! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
missing_dst=t

total_commits=
case "$missing_src,$missing_dst" in
t,)
errmsg="$(eval_gettext " Warn: \$name doesn't contain commit \$sha1_src")"
;;
,t)
errmsg="$(eval_gettext " Warn: \$name doesn't contain commit \$sha1_dst")"
;;
t,t)
errmsg="$(eval_gettext " Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
;;
*)
errmsg=
total_commits=$(
if test $mod_src = 160000 -a $mod_dst = 160000
then
range="$sha1_src...$sha1_dst"
elif test $mod_src = 160000
then
range=$sha1_src
else
range=$sha1_dst
fi
GIT_DIR="$name/.git" \
git rev-list --first-parent $range -- | wc -l
)
total_commits=" ($(($total_commits + 0)))"
;;
esac

sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
if test $status = T
then
blob="$(gettext "blob")"
submodule="$(gettext "submodule")"
if test $mod_dst = 160000
then
echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
else
echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
fi
else
echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
fi
if test -n "$errmsg"
then
# Don't give error msg for modification whose dst is not submodule
# i.e. deleted or changed to blob
test $mod_dst = 160000 && echo "$errmsg"
else
if test $mod_src = 160000 -a $mod_dst = 160000
then
limit=
test $summary_limit -gt 0 && limit="-$summary_limit"
GIT_DIR="$name/.git" \
git log $limit --pretty='format: %m %s' \
--first-parent $sha1_src...$sha1_dst
elif test $mod_dst = 160000
then
GIT_DIR="$name/.git" \
git log --pretty='format: > %s' -1 $sha1_dst
else
GIT_DIR="$name/.git" \
git log --pretty='format: < %s' -1 $sha1_src
fi
echo
fi
echo
done |
if test -n "$for_status"; then
if [ -n "$files" ]; then
gettextln "# Submodules changed but not updated:"
else
gettextln "# Submodule changes to be committed:"
fi
echo "#"
sed -e 's|^|# |' -e 's|^# $|#|'
else
cat
fi
}
#
# List all submodules, prefixed with:
# - submodule not initialized
# + different revision checked out
#
# If --cached was specified the revision in the index will be printed
# instead of the currently checked out revision.
#
# $@ = requested paths (default to all)
#
cmd_status()
{
# parse $args after "submodule ... status".
orig_flags=
while test $# -ne 0
do
case "$1" in
-q|--quiet)
GIT_QUIET=1
;;
--cached)
cached=1
;;
--recursive)
recursive=1
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
shift
done

module_list "$@" |
while read mode sha1 stage sm_path
do
name=$(module_name "$sm_path") || exit
url=$(git config submodule."$name".url)
displaypath="$prefix$sm_path"
if test "$stage" = U
then
say "U$sha1 $displaypath"
continue
fi
if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
then
say "-$sha1 $displaypath"
continue;
fi
set_name_rev "$sm_path" "$sha1"
if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
then
say " $sha1 $displaypath$revname"
else
if test -z "$cached"
then
sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
set_name_rev "$sm_path" "$sha1"
fi
say "+$sha1 $displaypath$revname"
fi

if test -n "$recursive"
then
(
prefix="$displaypath/"
clear_local_git_env
cd "$sm_path" &&
eval cmd_status "$orig_args"
) ||
die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
fi
done
}
#
# Sync remote urls for submodules
# This makes the value for remote.$remote.url match the value
# specified in .gitmodules.
#
cmd_sync()
{
while test $# -ne 0
do
case "$1" in
-q|--quiet)
GIT_QUIET=1
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
done
cd_to_toplevel
module_list "$@" |
while read mode sha1 stage sm_path
do
name=$(module_name "$sm_path")
url=$(git config -f .gitmodules --get submodule."$name".url)

# Possibly a url relative to parent
case "$url" in
./*|../*)
# rewrite foo/bar as ../.. to find path from
# submodule work tree to superproject work tree
up_path="$(echo "$sm_path" | sed "s/[^/][^/]*/../g")" &&
# guarantee a trailing /
up_path=${up_path%/}/ &&
# path from submodule work tree to submodule origin repo
sub_origin_url=$(resolve_relative_url "$url" "$up_path") &&
# path from superproject work tree to submodule origin repo
super_config_url=$(resolve_relative_url "$url") || exit
;;
*)
sub_origin_url="$url"
super_config_url="$url"
;;
esac

if git config "submodule.$name.url" >/dev/null 2>/dev/null
then
say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
git config submodule."$name".url "$super_config_url"

if test -e "$sm_path"/.git
then
(
clear_local_git_env
cd "$sm_path"
remote=$(get_default_remote)
git config remote."$remote".url "$sub_origin_url"
)
fi
fi
done
}

# This loop parses the command line arguments to find the
# subcommand name to dispatch. Parsing of the subcommand specific
# options are primarily done by the subcommand implementations.
# Subcommand specific options such as --branch and --cached are
# parsed here as well, for backward compatibility.

while test $# != 0 && test -z "$command"
do
case "$1" in
add | foreach | init | update | status | summary | sync)
command=$1
;;
-q|--quiet)
GIT_QUIET=1
;;
-b|--branch)
case "$2" in
'')
usage
;;
esac
branch="$2"; shift
;;
--cached)
cached="$1"
;;
--)
break
;;
-*)
usage
;;
*)
break
;;
esac
shift
done

# No command word defaults to "status"
test -n "$command" || command=status

# "-b branch" is accepted only by "add"
if test -n "$branch" && test "$command" != add
then
usage
fi

# "--cached" is accepted only by "status" and "summary"
if test -n "$cached" && test "$command" != status -a "$command" != summary
then
usage
fi

"cmd_$command" "$@"
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