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git submodule update: Introduce --recursive to update nested submodules

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In very large and hierarchically structured projects, one may encounter
nested submodules. In these situations, it is valuable to not only update
the submodules in the current repo (which is what is currently done by
'git submodule update'), but also to operate on all submodules at all
levels (i.e. recursing into nested submodules as well).

This patch teaches the new --recursive option to the 'git submodule update'
command. The patch also includes documentation and selftests.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johan Herland 2009-08-19 03:45:23 +02:00 committed by Junio C Hamano
parent 15fc56a853
commit b13fd5c1a2
3 changed files with 36 additions and 3 deletions
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7
Documentation/git-submodule.txt
View File

@ -14,7 +14,7 @@ SYNOPSIS
'git submodule' [--quiet] status [--cached] [--] [<path>...]
'git submodule' [--quiet] init [--] [<path>...]
'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase]
[--reference <repository>] [--merge] [--] [<path>...]
[--reference <repository>] [--merge] [--recursive] [--] [<path>...]
'git submodule' [--quiet] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
'git submodule' [--quiet] foreach [--recursive] <command>
'git submodule' [--quiet] sync [--] [<path>...]
@ -122,6 +122,9 @@ update::
If the submodule is not yet initialized, and you just want to use the
setting as stored in .gitmodules, you can automatically initialize the
submodule with the --init option.
+
If '--recursive' is specified, this command will recurse into the
registered submodules, and update any nested submodules within.
summary::
Show commit summary between the given commit (defaults to HEAD) and
@ -213,7 +216,7 @@ OPTIONS
for linkgit:git-clone[1]'s --reference and --shared options carefully.
--recursive::
This option is only valid for the foreach command.
This option is only valid for foreach and update commands.
Traverse submodules recursively. The operation is performed not
only in the submodules of the current repo, but also
in any nested submodules inside those submodules (and so on).

13
git-submodule.sh
View File

@ -8,7 +8,7 @@ dashless=$(basename "$0" | sed -e 's/-/ /')
USAGE="[--quiet] add [-b branch] [--reference <repository>] [--] <repository> <path>
or: $dashless [--quiet] status [--cached] [--] [<path>...]
or: $dashless [--quiet] init [--] [<path>...]
or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--] [<path>...]
or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
or: $dashless [--quiet] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
or: $dashless [--quiet] foreach [--recursive] <command>
or: $dashless [--quiet] sync [--] [<path>...]"
@ -352,6 +352,7 @@ cmd_init()
cmd_update()
{
# parse $args after "submodule ... update".
orig_args="$@"
while test $# -ne 0
do
case "$1" in
@ -384,6 +385,10 @@ cmd_update()
shift
update="merge"
;;
--recursive)
shift
recursive=1
;;
--)
shift
break
@ -470,6 +475,12 @@ cmd_update()
die "Unable to $action '$sha1' in submodule path '$path'"
say "Submodule path '$path': $msg '$sha1'"
fi
if test -n "$recursive"
then
(unset GIT_DIR; cd "$path" && cmd_update $orig_args) ||
die "Failed to recurse into submodule path '$path'"
fi
done
}

19
t/t7407-submodule-foreach.sh
View File

@ -175,4 +175,23 @@ test_expect_success 'test "foreach --quiet --recursive"' '
test_cmp expect actual
'
test_expect_success 'use "update --recursive" to checkout all submodules' '
git clone super clone3 &&
(
cd clone3 &&
test ! -d sub1/.git &&
test ! -d sub2/.git &&
test ! -d sub3/.git &&
test ! -d nested1/.git &&
git submodule update --init --recursive &&
test -d sub1/.git &&
test -d sub2/.git &&
test -d sub3/.git &&
test -d nested1/.git &&
test -d nested1/nested2/.git &&
test -d nested1/nested2/nested3/.git &&
test -d nested1/nested2/nested3/submodule/.git
)
'
test_done