#!/bin/sh
#
-# git-submodules.sh: init, update or list git submodules
+# git-submodules.sh: add, init, update or list git submodules
#
# Copyright (c) 2007 Lars Hjemli
-USAGE='[--quiet] [--cached] [status|init|update] [--] [<path>...]'
+USAGE='[--quiet] [--cached] [add <repo> [-b branch]|status|init|update] [--] [<path>...]'
+OPTIONS_SPEC=
. git-sh-setup
require_work_tree
-init=
-update=
-status=
+command=
+branch=
quiet=
cached=
fi
}
+# NEEDSWORK: identical function exists in get_repo_base in clone.sh
+get_repo_base() {
+ (
+ cd "`/bin/pwd`" &&
+ cd "$1" || cd "$1.git" &&
+ {
+ cd .git
+ pwd
+ }
+ ) 2>/dev/null
+}
+
+# Resolve relative url by appending to parent's url
+resolve_relative_url ()
+{
+ branch="$(git symbolic-ref HEAD 2>/dev/null)"
+ remote="$(git config branch.${branch#refs/heads/}.remote)"
+ remote="${remote:-origin}"
+ remoteurl="$(git config remote.$remote.url)" ||
+ die "remote ($remote) does not have a url in .git/config"
+ url="$1"
+ while test -n "$url"
+ do
+ case "$url" in
+ ../*)
+ url="${url#../}"
+ remoteurl="${remoteurl%/*}"
+ ;;
+ ./*)
+ url="${url#./}"
+ ;;
+ *)
+ break;;
+ esac
+ done
+ echo "$remoteurl/$url"
+}
+
+#
+# Map submodule path to submodule name
+#
+# $1 = path
+#
+module_name()
+{
+ # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
+ re=$(printf '%s' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
+ name=$( GIT_CONFIG=.gitmodules \
+ git config --get-regexp '^submodule\..*\.path$' |
+ sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
+ test -z "$name" &&
+ die "No submodule mapping found in .gitmodules for path '$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()
{
path=$1
die "A file already exist at path '$path'"
git-clone -n "$url" "$path" ||
- die "Clone of submodule '$path' failed"
+ die "Clone of '$url' into submodule path '$path' failed"
+}
+
+#
+# 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
+ ;;
+ -q|--quiet)
+ quiet=1
+ ;;
+ --)
+ shift
+ break
+ ;;
+ -*)
+ usage
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done
+
+ repo=$1
+ path=$2
+
+ if test -z "$repo"; then
+ usage
+ fi
+
+ case "$repo" in
+ ./*|../*)
+ # dereference source url relative to parent's url
+ realrepo="$(resolve_relative_url $repo)" ;;
+ *)
+ # Turn the source into an absolute path if
+ # it is local
+ if base=$(get_repo_base "$repo"); then
+ repo="$base"
+ fi
+ realrepo=$repo
+ ;;
+ esac
+
+ # Guess path from repo if not specified or strip trailing slashes
+ if test -z "$path"; then
+ path=$(echo "$repo" | sed -e 's|/*$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
+ else
+ path=$(echo "$path" | sed -e 's|/*$||')
+ fi
+
+ test -e "$path" &&
+ die "'$path' already exists"
+
+ git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
+ die "'$path' already exists in the index"
+
+ module_clone "$path" "$realrepo" || exit
+ (unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
+ die "Unable to checkout submodule '$path'"
+ git add "$path" ||
+ die "Failed to add submodule '$path'"
+
+ GIT_CONFIG=.gitmodules git config submodule."$path".path "$path" &&
+ GIT_CONFIG=.gitmodules git config submodule."$path".url "$repo" &&
+ git add .gitmodules ||
+ die "Failed to register submodule '$path'"
}
#
#
# $@ = requested paths (default to all)
#
-modules_init()
+cmd_init()
{
+ # parse $args after "submodule ... init".
+ while test $# -ne 0
+ do
+ case "$1" in
+ -q|--quiet)
+ quiet=1
+ ;;
+ --)
+ shift
+ break
+ ;;
+ -*)
+ usage
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done
+
git ls-files --stage -- "$@" | grep -e '^160000 ' |
while read mode sha1 stage path
do
# Skip already registered paths
- url=$(git-config submodule."$path".url)
+ name=$(module_name "$path") || exit
+ url=$(git config submodule."$name".url)
test -z "$url" || continue
- url=$(GIT_CONFIG=.gitmodules git-config module."$path".url)
+ url=$(GIT_CONFIG=.gitmodules git config submodule."$name".url)
test -z "$url" &&
- die "No url found for submodule '$path' in .gitmodules"
+ die "No url found for submodule path '$path' in .gitmodules"
- git-config submodule."$path".url "$url" ||
- die "Failed to register url for submodule '$path'"
+ # Possibly a url relative to parent
+ case "$url" in
+ ./*|../*)
+ url="$(resolve_relative_url "$url")"
+ ;;
+ esac
- say "Submodule '$path' registered with url '$url'"
+ git config submodule."$name".url "$url" ||
+ die "Failed to register url for submodule path '$path'"
+
+ say "Submodule '$name' ($url) registered for path '$path'"
done
}
#
# $@ = requested paths (default to all)
#
-modules_update()
+cmd_update()
{
+ # parse $args after "submodule ... update".
+ while test $# -ne 0
+ do
+ case "$1" in
+ -q|--quiet)
+ quiet=1
+ ;;
+ --)
+ shift
+ break
+ ;;
+ -*)
+ usage
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done
+
git ls-files --stage -- "$@" | grep -e '^160000 ' |
while read mode sha1 stage path
do
- url=$(git-config submodule."$path".url)
+ name=$(module_name "$path") || exit
+ url=$(git config submodule."$name".url)
if test -z "$url"
then
# Only mention uninitialized submodules when its
# path have been specified
test "$#" != "0" &&
- say "Submodule '$path' not initialized"
+ say "Submodule path '$path' not initialized"
continue
fi
if ! test -d "$path"/.git
then
module_clone "$path" "$url" || exit
+ subsha1=
+ else
+ subsha1=$(unset GIT_DIR; cd "$path" &&
+ git rev-parse --verify HEAD) ||
+ die "Unable to find current revision in submodule path '$path'"
fi
- subsha1=$(unset GIT_DIR && cd "$path" &&
- git-rev-parse --verify HEAD) ||
- die "Unable to find current revision of submodule '$path'"
-
if test "$subsha1" != "$sha1"
then
- (unset GIT_DIR && cd "$path" && git-fetch &&
+ (unset GIT_DIR; cd "$path" && git-fetch &&
git-checkout -q "$sha1") ||
- die "Unable to checkout '$sha1' in submodule '$path'"
+ die "Unable to checkout '$sha1' in submodule path '$path'"
- say "Submodule '$path': checked out '$sha1'"
+ say "Submodule path '$path': checked out '$sha1'"
fi
done
}
+set_name_rev () {
+ revname=$( (
+ unset GIT_DIR
+ cd "$1" && {
+ git describe "$2" 2>/dev/null ||
+ git describe --tags "$2" 2>/dev/null ||
+ git describe --contains --tags "$2"
+ }
+ ) )
+ test -z "$revname" || revname=" ($revname)"
+}
+
#
-# List all registered submodules, prefixed with:
+# List all submodules, prefixed with:
# - submodule not initialized
# + different revision checked out
#
#
# $@ = requested paths (default to all)
#
-modules_list()
+cmd_status()
{
+ # parse $args after "submodule ... status".
+ while test $# -ne 0
+ do
+ case "$1" in
+ -q|--quiet)
+ quiet=1
+ ;;
+ --cached)
+ cached=1
+ ;;
+ --)
+ shift
+ break
+ ;;
+ -*)
+ usage
+ ;;
+ *)
+ break
+ ;;
+ esac
+ shift
+ done
+
git ls-files --stage -- "$@" | grep -e '^160000 ' |
while read mode sha1 stage path
do
- if ! test -d "$path"/.git
+ name=$(module_name "$path") || exit
+ url=$(git config submodule."$name".url)
+ if test -z "url" || ! test -d "$path"/.git
then
say "-$sha1 $path"
continue;
fi
- revname=$(unset GIT_DIR && cd "$path" && git-describe $sha1)
+ set_name_rev "$path" "$sha1"
if git diff-files --quiet -- "$path"
then
- say " $sha1 $path ($revname)"
+ say " $sha1 $path$revname"
else
if test -z "$cached"
then
- sha1=$(unset GIT_DIR && cd "$path" && git-rev-parse --verify HEAD)
- revname=$(unset GIT_DIR && cd "$path" && git-describe $sha1)
+ sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
+ set_name_rev "$path" "$sha1"
fi
- say "+$sha1 $path ($revname)"
+ say "+$sha1 $path$revname"
fi
done
}
-while case "$#" in 0) break ;; esac
+# 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
- init)
- init=1
- ;;
- update)
- update=1
- ;;
- status)
- status=1
+ add | init | update | status)
+ command=$1
;;
-q|--quiet)
quiet=1
;;
+ -b|--branch)
+ case "$2" in
+ '')
+ usage
+ ;;
+ esac
+ branch="$2"; shift
+ ;;
--cached)
cached=1
;;
shift
done
-case "$init,$update,$status,$cached" in
-1,,,)
- modules_init "$@"
- ;;
-,1,,)
- modules_update "$@"
- ;;
-,,*,*)
- modules_list "$@"
- ;;
-*)
+# No command word defaults to "status"
+test -n "$command" || command=status
+
+# "-b branch" is accepted only by "add"
+if test -n "$branch" && test "$command" != add
+then
usage
- ;;
-esac
+fi
+
+# "--cached" is accepted only by "status"
+if test -n "$cached" && test "$command" != status
+then
+ usage
+fi
+
+"cmd_$command" "$@"