| -rwxr-xr-x | submodules.sh | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/submodules.sh b/submodules.sh new file mode 100755 index 0000000..1d7b13f --- a/dev/null +++ b/submodules.sh @@ -0,0 +1,181 @@ +#!/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 |