git submodule foreach: Add --recursive to recurse into nested submodules

diff --git a/git-submodule.sh b/git-submodule.sh
index f384c6b2b4953110ab0f892aabdbb826ac2263da..c501b7eafab96460bce4e48532d6bd05992e9829 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -4,9 +4,14 @@
 #
 # Copyright (c) 2007 Lars Hjemli
 
-USAGE="[--quiet] [--cached] \
-[add [-b branch] <repo> <path>]|[status|init|update [-i|--init] [-N|--no-fetch]|summary [-n|--summary-limit <n>] [<commit>]] \
-[--] [<path>...]|[foreach <command>]|[sync [--] [<path>...]]"
+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] summary [--cached] [--summary-limit <n>] [commit] [--] [<path>...]
+   or: $dashless [--quiet] foreach [--recursive] <command>
+   or: $dashless [--quiet] sync [--] [<path>...]"
 OPTIONS_SPEC=
 . git-sh-setup
 . git-parse-remote
@@ -14,21 +19,11 @@ require_work_tree
 
 command=
 branch=
-quiet=
+reference=
 cached=
 nofetch=
 update=
-
-#
-# print stuff on stdout unless -q was specified
-#
-say()
-{
-       if test -z "$quiet"
-       then
-               echo "$@"
-       fi
-}
+prefix=
 
 # Resolve relative url by appending to parent's url
 resolve_relative_url ()
@@ -92,6 +87,7 @@ module_clone()
 {
        path=$1
        url=$2
+       reference="$3"
 
        # If there already is a directory at the submodule path,
        # expect it to be empty (since that is the default checkout
@@ -107,7 +103,12 @@ module_clone()
        test -e "$path" &&
        die "A file already exist at path '$path'"
 
-       git-clone -n "$url" "$path" ||
+       if test -n "$reference"
+       then
+               git-clone "$reference" -n "$url" "$path"
+       else
+               git-clone -n "$url" "$path"
+       fi ||
        die "Clone of '$url' into submodule path '$path' failed"
 }
 
@@ -130,7 +131,16 @@ cmd_add()
                        shift
                        ;;
                -q|--quiet)
-                       quiet=1
+                       GIT_QUIET=1
+                       ;;
+               --reference)
+                       case "$2" in '') usage ;; esac
+                       reference="--reference=$2"
+                       shift
+                       ;;
+               --reference=*)
+                       reference="$1"
+                       shift
                        ;;
                --)
                        shift
@@ -204,7 +214,7 @@ cmd_add()
                git config submodule."$path".url "$url"
        else
 
-               module_clone "$path" "$realrepo" || exit
+               module_clone "$path" "$realrepo" "$reference" || exit
                (
                        unset GIT_DIR
                        cd "$path" &&
@@ -233,13 +243,43 @@ cmd_add()
 #
 cmd_foreach()
 {
+       # parse $args after "submodule ... foreach".
+       while test $# -ne 0
+       do
+               case "$1" in
+               -q|--quiet)
+                       GIT_QUIET=1
+                       ;;
+               --recursive)
+                       recursive=1
+                       ;;
+               -*)
+                       usage
+                       ;;
+               *)
+                       break
+                       ;;
+               esac
+               shift
+       done
+
        module_list |
        while read mode sha1 stage path
        do
                if test -e "$path"/.git
                then
-                       say "Entering '$path'"
-                       (cd "$path" && eval "$@") ||
+                       say "Entering '$prefix$path'"
+                       name=$(module_name "$path")
+                       (
+                               prefix="$prefix$path/"
+                               unset GIT_DIR
+                               cd "$path" &&
+                               eval "$@" &&
+                               if test -n "$recursive"
+                               then
+                                       cmd_foreach "--recursive" "$@"
+                               fi
+                       ) ||
                        die "Stopping at '$path'; script returned non-zero status."
                fi
        done
@@ -257,7 +297,7 @@ cmd_init()
        do
                case "$1" in
                -q|--quiet)
-                       quiet=1
+                       GIT_QUIET=1
                        ;;
                --)
                        shift
@@ -317,11 +357,11 @@ cmd_update()
                case "$1" in
                -q|--quiet)
                        shift
-                       quiet=1
+                       GIT_QUIET=1
                        ;;
                -i|--init)
+                       init=1
                        shift
-                       cmd_init "$@" || return
                        ;;
                -N|--no-fetch)
                        shift
@@ -331,6 +371,19 @@ cmd_update()
                        shift
                        update="rebase"
                        ;;
+               --reference)
+                       case "$2" in '') usage ;; esac
+                       reference="--reference=$2"
+                       shift 2
+                       ;;
+               --reference=*)
+                       reference="$1"
+                       shift
+                       ;;
+               -m|--merge)
+                       shift
+                       update="merge"
+                       ;;
                --)
                        shift
                        break
@@ -344,6 +397,11 @@ cmd_update()
                esac
        done
 
+       if test -n "$init"
+       then
+               cmd_init "--" "$@" || return
+       fi
+
        module_list "$@" |
        while read mode sha1 stage path
        do
@@ -362,7 +420,7 @@ cmd_update()
 
                if ! test -d "$path"/.git -o -f "$path"/.git
                then
-                       module_clone "$path" "$url" || exit
+                       module_clone "$path" "$url" "$reference"|| exit
                        subsha1=
                else
                        subsha1=$(unset GIT_DIR; cd "$path" &&
@@ -396,6 +454,11 @@ cmd_update()
                                action="rebase"
                                msg="rebased onto"
                                ;;
+                       merge)
+                               command="git merge"
+                               action="merge"
+                               msg="merged in"
+                               ;;
                        *)
                                command="git checkout $force -q"
                                action="checkout"
@@ -620,7 +683,7 @@ cmd_status()
        do
                case "$1" in
                -q|--quiet)
-                       quiet=1
+                       GIT_QUIET=1
                        ;;
                --cached)
                        cached=1
@@ -674,7 +737,7 @@ cmd_sync()
        do
                case "$1" in
                -q|--quiet)
-                       quiet=1
+                       GIT_QUIET=1
                        shift
                        ;;
                --)
@@ -729,7 +792,7 @@ do
                command=$1
                ;;
        -q|--quiet)
-               quiet=1
+               GIT_QUIET=1
                ;;
        -b|--branch)
                case "$2" in