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|
#!/bin/sh
#
# submodules.sh: init, update or list git submodules
#
# Copyright (C) 2006 Lars Hjemli
#
# Licensed under GNU General Public License v2
# (see COPYING for full license text)
#
usage="submodules.sh [-i | -u] [-q] [--cached] [path...]"
init=
update=
quiet=
cached=
say()
{
if test -z "$quiet"
then
echo -e "$@"
fi
}
die()
{
echo >&2 -e "$@"
exit 1
}
#
# Silently checkout specified submodule revision, return exit status of git-checkout
#
# $1 = local path
# $2 = requested sha1
#
module_checkout()
{
$(cd "$1" && git checkout "$2" 1>/dev/null 2>/dev/null)
}
#
# Find all (requested) submodules, run clone + checkout on missing paths
#
# $@ = requested paths (default to all)
#
modules_init()
{
git ls-files --stage -- $@ | grep -e '^160000 ' |
while read mode sha1 stage path
do
test -d "$path/.git" && continue
if test -d "$path"
then
rmdir "$path" 2>/dev/null ||
die "Directory '$path' exist, but not as a submodule"
fi
test -e "$path" && die "A file already exist at path '$path'"
url=$(sed -nre "s/^$path[ \t]+//p" .gitmodules)
test -z "$url" && die "No url found for $path in .gitmodules"
git clone "$url" "$path" || die "Clone of submodule '$path' failed"
module_checkout "$path" "$sha1" || die "Checkout of submodule '$path' failed"
say "Submodule '$path' initialized"
done
}
#
# Checkout correct revision of each initialized submodule
#
# $@ = requested paths (default to all)
#
modules_update()
{
git ls-files --stage -- $@ | grep -e '^160000 ' |
while read mode sha1 stage path
do
if ! test -d "$path/.git"
then
say "Submodule '$path' not initialized"
continue;
fi
subsha1=$(cd "$path" && git rev-parse --verify HEAD) ||
die "Unable to find current revision of submodule '$path'"
if test "$subsha1" != "$sha1"
then
module_checkout "$path" "$sha1" ||
die "Unable to checkout revision $sha1 of submodule '$path'"
say "Submodule '$path' reset to revision $sha1"
fi
done
}
#
# List all registered submodules, prefixed with:
# - submodule not initialized
# + different version 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)
#
modules_list()
{
git ls-files --stage -- $@ | grep -e '^160000 ' |
while read mode sha1 stage path
do
if ! test -d "$path/.git"
then
say "-$sha1 $path"
continue;
fi
revname=$(cd "$path" && git describe $sha1)
if git diff-files --quiet -- "$path"
then
say " $sha1 $path\t($revname)"
else
if test -z "$cached"
then
sha1=$(cd "$path" && git rev-parse HEAD)
revname=$(cd "$path" && git describe HEAD)
fi
say "+$sha1 $path\t($revname)"
fi
done
}
while case "$#" in 0) break ;; esac
do
case "$1" in
-i)
init=1
;;
-u)
update=1
;;
-q)
quiet=1
;;
--cached)
cached=1
;;
--)
break
;;
-*)
echo "Usage: $usage"
exit 1
;;
--*)
echo "Usage: $usage"
exit 1
;;
*)
break
;;
esac
shift
done
if test "$init" = "1"
then
modules_init $@
elif test "$update" = "1"
then
modules_update $@
else
modules_list $@
fi
|
