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git submodule foreach: Add --recursive to recurse into nested submodules
In very large and hierarchically structured projects, one may encounter nested submodules. In these situations, it is valuable to not only operate on all the submodules in the current repo (which is what is currently done by 'git submodule foreach'), 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 foreach' 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>
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@ -16,7 +16,7 @@ SYNOPSIS
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'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase]
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[--reference <repository>] [--merge] [--] [<path>...]
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'git submodule' [--quiet] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
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'git submodule' [--quiet] foreach <command>
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'git submodule' [--quiet] foreach [--recursive] <command>
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'git submodule' [--quiet] sync [--] [<path>...]
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@ -138,6 +138,8 @@ foreach::
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Any submodules defined in the superproject but not checked out are
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ignored by this command. Unless given --quiet, foreach prints the name
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of each submodule before evaluating the command.
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If --recursive is given, submodules are traversed recursively (i.e.
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the given shell command is evaluated in nested submodules as well).
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A non-zero return from the command in any submodule causes
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the processing to terminate. This can be overridden by adding '|| :'
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to the end of the command.
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@ -210,6 +212,12 @@ OPTIONS
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*NOTE*: Do *not* use this option unless you have read the note
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for linkgit:git-clone[1]'s --reference and --shared options carefully.
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--recursive::
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This option is only valid for the foreach command.
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Traverse submodules recursively. The operation is performed not
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only in the submodules of the current repo, but also
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in any nested submodules inside those submodules (and so on).
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<path>...::
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Paths to submodule(s). When specified this will restrict the command
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to only operate on the submodules found at the specified paths.
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@ -10,7 +10,7 @@ USAGE="[--quiet] add [-b branch] [--reference <repository>] [--] <repository> <p
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or: $dashless [--quiet] init [--] [<path>...]
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or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--] [<path>...]
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or: $dashless [--quiet] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
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or: $dashless [--quiet] foreach <command>
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or: $dashless [--quiet] foreach [--recursive] <command>
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or: $dashless [--quiet] sync [--] [<path>...]"
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OPTIONS_SPEC=
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. git-sh-setup
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@ -23,6 +23,7 @@ reference=
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cached=
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nofetch=
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update=
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prefix=
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# Resolve relative url by appending to parent's url
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resolve_relative_url ()
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@ -249,6 +250,9 @@ cmd_foreach()
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-q|--quiet)
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GIT_QUIET=1
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;;
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--recursive)
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recursive=1
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;;
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-*)
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usage
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;;
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@ -264,9 +268,18 @@ cmd_foreach()
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do
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if test -e "$path"/.git
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then
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say "Entering '$path'"
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say "Entering '$prefix$path'"
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name=$(module_name "$path")
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(cd "$path" && eval "$@") ||
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(
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prefix="$prefix$path/"
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unset GIT_DIR
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cd "$path" &&
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eval "$@" &&
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if test -n "$recursive"
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then
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cmd_foreach "--recursive" "$@"
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fi
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) ||
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die "Stopping at '$path'; script returned non-zero status."
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fi
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done
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@ -76,4 +76,103 @@ test_expect_success 'test basic "submodule foreach" usage' '
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test_cmp expect actual
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'
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test_expect_success 'setup nested submodules' '
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git clone submodule nested1 &&
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git clone submodule nested2 &&
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git clone submodule nested3 &&
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(
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cd nested3 &&
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git submodule add ../submodule submodule &&
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test_tick &&
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git commit -m "submodule" &&
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git submodule init submodule
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) &&
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(
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cd nested2 &&
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git submodule add ../nested3 nested3 &&
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test_tick &&
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git commit -m "nested3" &&
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git submodule init nested3
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) &&
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(
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cd nested1 &&
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git submodule add ../nested2 nested2 &&
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test_tick &&
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git commit -m "nested2" &&
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git submodule init nested2
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) &&
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(
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cd super &&
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git submodule add ../nested1 nested1 &&
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test_tick &&
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git commit -m "nested1" &&
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git submodule init nested1
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)
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'
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test_expect_success 'use "submodule foreach" to checkout 2nd level submodule' '
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git clone super clone2 &&
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(
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cd clone2 &&
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test ! -d sub1/.git &&
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test ! -d sub2/.git &&
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test ! -d sub3/.git &&
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test ! -d nested1/.git &&
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git submodule update --init &&
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test -d sub1/.git &&
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test -d sub2/.git &&
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test -d sub3/.git &&
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test -d nested1/.git &&
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test ! -d nested1/nested2/.git &&
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git submodule foreach "git submodule update --init" &&
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test -d nested1/nested2/.git &&
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test ! -d nested1/nested2/nested3/.git
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)
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'
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test_expect_success 'use "foreach --recursive" to checkout all submodules' '
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(
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cd clone2 &&
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git submodule foreach --recursive "git submodule update --init" &&
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test -d nested1/nested2/nested3/.git &&
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test -d nested1/nested2/nested3/submodule/.git
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)
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'
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cat > expect <<EOF
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Entering 'nested1'
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Entering 'nested1/nested2'
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Entering 'nested1/nested2/nested3'
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Entering 'nested1/nested2/nested3/submodule'
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Entering 'sub1'
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Entering 'sub2'
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Entering 'sub3'
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EOF
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test_expect_success 'test messages from "foreach --recursive"' '
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(
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cd clone2 &&
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git submodule foreach --recursive "true" > ../actual
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) &&
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test_cmp expect actual
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'
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cat > expect <<EOF
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nested1-nested1
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nested2-nested2
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nested3-nested3
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submodule-submodule
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foo1-sub1
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foo2-sub2
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foo3-sub3
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EOF
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test_expect_success 'test "foreach --quiet --recursive"' '
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(
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cd clone2 &&
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git submodule foreach -q --recursive "echo \$name-\$path" > ../actual
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) &&
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test_cmp expect actual
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'
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test_done
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