ref: v0.5
./submodules.sh
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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 |