f7d7f51c37889b6d29239e794e444d0c1bcfa241
1#!/bin/sh
2#
3# git-submodules.sh: add, init, update or list git submodules
4#
5# Copyright (c) 2007 Lars Hjemli
6dashless=$(basename "$0" | sed -e 's/-/ /')
8USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
9 or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
10 or: $dashless [--quiet] init [--] [<path>...]
11 or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
12 or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
13 or: $dashless [--quiet] foreach [--recursive] <command>
14 or: $dashless [--quiet] sync [--] [<path>...]"
15OPTIONS_SPEC=
16. git-sh-setup
17. git-sh-i18n
18. git-parse-remote
19require_work_tree
20command=
22branch=
23force=
24reference=
25cached=
26recursive=
27init=
28files=
29nofetch=
30update=
31prefix=
32# Resolve relative url by appending to parent's url
34resolve_relative_url ()
35{
36 remote=$(get_default_remote)
37 remoteurl=$(git config "remote.$remote.url") ||
38 die "$(eval_gettext "remote (\$remote) does not have a url defined in .git/config")"
39 url="$1"
40 remoteurl=${remoteurl%/}
41 sep=/
42 while test -n "$url"
43 do
44 case "$url" in
45 ../*)
46 url="${url#../}"
47 case "$remoteurl" in
48 */*)
49 remoteurl="${remoteurl%/*}"
50 ;;
51 *:*)
52 remoteurl="${remoteurl%:*}"
53 sep=:
54 ;;
55 *)
56 die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
57 ;;
58 esac
59 ;;
60 ./*)
61 url="${url#./}"
62 ;;
63 *)
64 break;;
65 esac
66 done
67 echo "$remoteurl$sep${url%/}"
68}
69#
71# Get submodule info for registered submodules
72# $@ = path to limit submodule list
73#
74module_list()
75{
76 git ls-files --error-unmatch --stage -- "$@" |
77 perl -e '
78 my %unmerged = ();
79 my ($null_sha1) = ("0" x 40);
80 while (<STDIN>) {
81 chomp;
82 my ($mode, $sha1, $stage, $path) =
83 /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
84 next unless $mode eq "160000";
85 if ($stage ne "0") {
86 if (!$unmerged{$path}++) {
87 print "$mode $null_sha1 U\t$path\n";
88 }
89 next;
90 }
91 print "$_\n";
92 }
93 '
94}
95#
97# Map submodule path to submodule name
98#
99# $1 = path
100#
101module_name()
102{
103 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
104 re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
105 name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
106 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
107 test -z "$name" &&
108 die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$path'")"
109 echo "$name"
110}
111#
113# Clone a submodule
114#
115# Prior to calling, cmd_update checks that a possibly existing
116# path is not a git repository.
117# Likewise, cmd_add checks that path does not exist at all,
118# since it is the location of a new submodule.
119#
120module_clone()
121{
122 path=$1
123 url=$2
124 reference="$3"
125 if test -n "$reference"
127 then
128 git-clone "$reference" -n "$url" "$path"
129 else
130 git-clone -n "$url" "$path"
131 fi ||
132 die "$(eval_gettext "Clone of '\$url' into submodule path '\$path' failed")"
133}
134#
136# Add a new submodule to the working tree, .gitmodules and the index
137#
138# $@ = repo path
139#
140# optional branch is stored in global branch variable
141#
142cmd_add()
143{
144 # parse $args after "submodule ... add".
145 while test $# -ne 0
146 do
147 case "$1" in
148 -b | --branch)
149 case "$2" in '') usage ;; esac
150 branch=$2
151 shift
152 ;;
153 -f | --force)
154 force=$1
155 ;;
156 -q|--quiet)
157 GIT_QUIET=1
158 ;;
159 --reference)
160 case "$2" in '') usage ;; esac
161 reference="--reference=$2"
162 shift
163 ;;
164 --reference=*)
165 reference="$1"
166 shift
167 ;;
168 --)
169 shift
170 break
171 ;;
172 -*)
173 usage
174 ;;
175 *)
176 break
177 ;;
178 esac
179 shift
180 done
181 repo=$1
183 path=$2
184 if test -z "$path"; then
186 path=$(echo "$repo" |
187 sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
188 fi
189 if test -z "$repo" -o -z "$path"; then
191 usage
192 fi
193 # assure repo is absolute or relative to parent
195 case "$repo" in
196 ./*|../*)
197 # dereference source url relative to parent's url
198 realrepo=$(resolve_relative_url "$repo") || exit
199 ;;
200 *:*|/*)
201 # absolute url
202 realrepo=$repo
203 ;;
204 *)
205 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
206 ;;
207 esac
208 # normalize path:
210 # multiple //; leading ./; /./; /../; trailing /
211 path=$(printf '%s/\n' "$path" |
212 sed -e '
213 s|//*|/|g
214 s|^\(\./\)*||
215 s|/\./|/|g
216 :start
217 s|\([^/]*\)/\.\./||
218 tstart
219 s|/*$||
220 ')
221 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
222 die "$(eval_gettext "'\$path' already exists in the index")"
223 if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
225 then
226 echo >&2 "The following path is ignored by one of your .gitignore files:" &&
227 echo >&2 $path &&
228 echo >&2 "Use -f if you really want to add it."
229 exit 1
230 fi
231 # perhaps the path exists and is already a git repo, else clone it
233 if test -e "$path"
234 then
235 if test -d "$path"/.git -o -f "$path"/.git
236 then
237 eval_gettext "Adding existing repo at '\$path' to the index"; echo
238 else
239 die "$(eval_gettext "'\$path' already exists and is not a valid git repo")"
240 fi
241 case "$repo" in
243 ./*|../*)
244 url=$(resolve_relative_url "$repo") || exit
245 ;;
246 *)
247 url="$repo"
248 ;;
249 esac
250 git config submodule."$path".url "$url"
251 else
252 module_clone "$path" "$realrepo" "$reference" || exit
254 (
255 clear_local_git_env
256 cd "$path" &&
257 # ash fails to wordsplit ${branch:+-b "$branch"...}
258 case "$branch" in
259 '') git checkout -f -q ;;
260 ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
261 esac
262 ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
263 fi
264 git add $force "$path" ||
266 die "$(eval_gettext "Failed to add submodule '\$path'")"
267 git config -f .gitmodules submodule."$path".path "$path" &&
269 git config -f .gitmodules submodule."$path".url "$repo" &&
270 git add --force .gitmodules ||
271 die "$(eval_gettext "Failed to register submodule '\$path'")"
272}
273#
275# Execute an arbitrary command sequence in each checked out
276# submodule
277#
278# $@ = command to execute
279#
280cmd_foreach()
281{
282 # parse $args after "submodule ... foreach".
283 while test $# -ne 0
284 do
285 case "$1" in
286 -q|--quiet)
287 GIT_QUIET=1
288 ;;
289 --recursive)
290 recursive=1
291 ;;
292 -*)
293 usage
294 ;;
295 *)
296 break
297 ;;
298 esac
299 shift
300 done
301 toplevel=$(pwd)
303 module_list |
305 while read mode sha1 stage path
306 do
307 if test -e "$path"/.git
308 then
309 say "$(eval_gettext "Entering '\$prefix\$path'")"
310 name=$(module_name "$path")
311 (
312 prefix="$prefix$path/"
313 clear_local_git_env
314 cd "$path" &&
315 eval "$@" &&
316 if test -n "$recursive"
317 then
318 cmd_foreach "--recursive" "$@"
319 fi
320 ) ||
321 die "$(eval_gettext "Stopping at '\$path'; script returned non-zero status.")"
322 fi
323 done
324}
325#
327# Register submodules in .git/config
328#
329# $@ = requested paths (default to all)
330#
331cmd_init()
332{
333 # parse $args after "submodule ... init".
334 while test $# -ne 0
335 do
336 case "$1" in
337 -q|--quiet)
338 GIT_QUIET=1
339 ;;
340 --)
341 shift
342 break
343 ;;
344 -*)
345 usage
346 ;;
347 *)
348 break
349 ;;
350 esac
351 shift
352 done
353 module_list "$@" |
355 while read mode sha1 stage path
356 do
357 # Skip already registered paths
358 name=$(module_name "$path") || exit
359 url=$(git config submodule."$name".url)
360 test -z "$url" || continue
361 url=$(git config -f .gitmodules submodule."$name".url)
363 test -z "$url" &&
364 die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
365 # Possibly a url relative to parent
367 case "$url" in
368 ./*|../*)
369 url=$(resolve_relative_url "$url") || exit
370 ;;
371 esac
372 git config submodule."$name".url "$url" ||
374 die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
375 upd="$(git config -f .gitmodules submodule."$name".update)"
377 test -z "$upd" ||
378 git config submodule."$name".update "$upd" ||
379 die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
380 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$path'")"
382 done
383}
384#
386# Update each submodule path to correct revision, using clone and checkout as needed
387#
388# $@ = requested paths (default to all)
389#
390cmd_update()
391{
392 # parse $args after "submodule ... update".
393 orig_flags=
394 while test $# -ne 0
395 do
396 case "$1" in
397 -q|--quiet)
398 GIT_QUIET=1
399 ;;
400 -i|--init)
401 init=1
402 ;;
403 -N|--no-fetch)
404 nofetch=1
405 ;;
406 -f|--force)
407 force=$1
408 ;;
409 -r|--rebase)
410 update="rebase"
411 ;;
412 --reference)
413 case "$2" in '') usage ;; esac
414 reference="--reference=$2"
415 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
416 shift
417 ;;
418 --reference=*)
419 reference="$1"
420 ;;
421 -m|--merge)
422 update="merge"
423 ;;
424 --recursive)
425 recursive=1
426 ;;
427 --)
428 shift
429 break
430 ;;
431 -*)
432 usage
433 ;;
434 *)
435 break
436 ;;
437 esac
438 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
439 shift
440 done
441 if test -n "$init"
443 then
444 cmd_init "--" "$@" || return
445 fi
446 cloned_modules=
448 module_list "$@" |
449 while read mode sha1 stage path
450 do
451 if test "$stage" = U
452 then
453 echo >&2 "Skipping unmerged submodule $path"
454 continue
455 fi
456 name=$(module_name "$path") || exit
457 url=$(git config submodule."$name".url)
458 update_module=$(git config submodule."$name".update)
459 if test -z "$url"
460 then
461 # Only mention uninitialized submodules when its
462 # path have been specified
463 test "$#" != "0" &&
464 say "Submodule path '$path' not initialized" &&
465 say "Maybe you want to use 'update --init'?"
466 continue
467 fi
468 if ! test -d "$path"/.git -o -f "$path"/.git
470 then
471 module_clone "$path" "$url" "$reference"|| exit
472 cloned_modules="$cloned_modules;$name"
473 subsha1=
474 else
475 subsha1=$(clear_local_git_env; cd "$path" &&
476 git rev-parse --verify HEAD) ||
477 die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
478 fi
479 if ! test -z "$update"
481 then
482 update_module=$update
483 fi
484 if test "$subsha1" != "$sha1"
486 then
487 subforce=$force
488 # If we don't already have a -f flag and the submodule has never been checked out
489 if test -z "$subsha1" -a -z "$force"
490 then
491 subforce="-f"
492 fi
493 if test -z "$nofetch"
495 then
496 # Run fetch only if $sha1 isn't present or it
497 # is not reachable from a ref.
498 (clear_local_git_env; cd "$path" &&
499 ((rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
500 test -z "$rev") || git-fetch)) ||
501 die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
502 fi
503 # Is this something we just cloned?
505 case ";$cloned_modules;" in
506 *";$name;"*)
507 # then there is no local change to integrate
508 update_module= ;;
509 esac
510 case "$update_module" in
512 rebase)
513 command="git rebase"
514 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$path'")"
515 say_msg="$(eval_gettext "Submodule path '\$path': rebased into '\$sha1'")"
516 ;;
517 merge)
518 command="git merge"
519 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$path'")"
520 say_msg="$(eval_gettext "Submodule path '\$path': merged in '\$sha1'")"
521 ;;
522 *)
523 command="git checkout $subforce -q"
524 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$path'")"
525 say_msg="$(eval_gettext "Submodule path '\$path': checked out '\$sha1'")"
526 ;;
527 esac
528 (clear_local_git_env; cd "$path" && $command "$sha1") || die $die_msg
530 say $say_msg
531 fi
532 if test -n "$recursive"
534 then
535 (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
536 die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
537 fi
538 done
539}
540set_name_rev () {
542 revname=$( (
543 clear_local_git_env
544 cd "$1" && {
545 git describe "$2" 2>/dev/null ||
546 git describe --tags "$2" 2>/dev/null ||
547 git describe --contains "$2" 2>/dev/null ||
548 git describe --all --always "$2"
549 }
550 ) )
551 test -z "$revname" || revname=" ($revname)"
552}
553#
554# Show commit summary for submodules in index or working tree
555#
556# If '--cached' is given, show summary between index and given commit,
557# or between working tree and given commit
558#
559# $@ = [commit (default 'HEAD'),] requested paths (default all)
560#
561cmd_summary() {
562 summary_limit=-1
563 for_status=
564 diff_cmd=diff-index
565 # parse $args after "submodule ... summary".
567 while test $# -ne 0
568 do
569 case "$1" in
570 --cached)
571 cached="$1"
572 ;;
573 --files)
574 files="$1"
575 ;;
576 --for-status)
577 for_status="$1"
578 ;;
579 -n|--summary-limit)
580 if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
581 then
582 :
583 else
584 usage
585 fi
586 shift
587 ;;
588 --)
589 shift
590 break
591 ;;
592 -*)
593 usage
594 ;;
595 *)
596 break
597 ;;
598 esac
599 shift
600 done
601 test $summary_limit = 0 && return
603 if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
605 then
606 head=$rev
607 test $# = 0 || shift
608 elif test -z "$1" -o "$1" = "HEAD"
609 then
610 # before the first commit: compare with an empty tree
611 head=$(git hash-object -w -t tree --stdin </dev/null)
612 test -z "$1" || shift
613 else
614 head="HEAD"
615 fi
616 if [ -n "$files" ]
618 then
619 test -n "$cached" &&
620 die "$(gettext -- "--cached cannot be used with --files")"
621 diff_cmd=diff-files
622 head=
623 fi
624 cd_to_toplevel
626 # Get modified modules cared by user
627 modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
628 sane_egrep '^:([0-7]* )?160000' |
629 while read mod_src mod_dst sha1_src sha1_dst status name
630 do
631 # Always show modules deleted or type-changed (blob<->module)
632 test $status = D -o $status = T && echo "$name" && continue
633 # Also show added or modified modules which are checked out
634 GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
635 echo "$name"
636 done
637 )
638 test -z "$modules" && return
640 git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
642 sane_egrep '^:([0-7]* )?160000' |
643 cut -c2- |
644 while read mod_src mod_dst sha1_src sha1_dst status name
645 do
646 if test -z "$cached" &&
647 test $sha1_dst = 0000000000000000000000000000000000000000
648 then
649 case "$mod_dst" in
650 160000)
651 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
652 ;;
653 100644 | 100755 | 120000)
654 sha1_dst=$(git hash-object $name)
655 ;;
656 000000)
657 ;; # removed
658 *)
659 # unexpected type
660 (
661 eval_gettext "unexpected mode \$mod_dst" &&
662 echo
663 ) >&2
664 continue ;;
665 esac
666 fi
667 missing_src=
668 missing_dst=
669 test $mod_src = 160000 &&
671 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
672 missing_src=t
673 test $mod_dst = 160000 &&
675 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
676 missing_dst=t
677 total_commits=
679 case "$missing_src,$missing_dst" in
680 t,)
681 errmsg="$(eval_gettext " Warn: \$name doesn't contain commit \$sha1_src")"
682 ;;
683 ,t)
684 errmsg="$(eval_gettext " Warn: \$name doesn't contain commit \$sha1_dst")"
685 ;;
686 t,t)
687 errmsg="$(eval_gettext " Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
688 ;;
689 *)
690 errmsg=
691 total_commits=$(
692 if test $mod_src = 160000 -a $mod_dst = 160000
693 then
694 range="$sha1_src...$sha1_dst"
695 elif test $mod_src = 160000
696 then
697 range=$sha1_src
698 else
699 range=$sha1_dst
700 fi
701 GIT_DIR="$name/.git" \
702 git rev-list --first-parent $range -- | wc -l
703 )
704 total_commits=" ($(($total_commits + 0)))"
705 ;;
706 esac
707 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
709 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
710 if test $status = T
711 then
712 if test $mod_dst = 160000
713 then
714 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
715 else
716 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
717 fi
718 else
719 echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
720 fi
721 if test -n "$errmsg"
722 then
723 # Don't give error msg for modification whose dst is not submodule
724 # i.e. deleted or changed to blob
725 test $mod_dst = 160000 && echo "$errmsg"
726 else
727 if test $mod_src = 160000 -a $mod_dst = 160000
728 then
729 limit=
730 test $summary_limit -gt 0 && limit="-$summary_limit"
731 GIT_DIR="$name/.git" \
732 git log $limit --pretty='format: %m %s' \
733 --first-parent $sha1_src...$sha1_dst
734 elif test $mod_dst = 160000
735 then
736 GIT_DIR="$name/.git" \
737 git log --pretty='format: > %s' -1 $sha1_dst
738 else
739 GIT_DIR="$name/.git" \
740 git log --pretty='format: < %s' -1 $sha1_src
741 fi
742 echo
743 fi
744 echo
745 done |
746 if test -n "$for_status"; then
747 if [ -n "$files" ]; then
748 gettext "# Submodules changed but not updated:"; echo
749 else
750 gettext "# Submodule changes to be committed:"; echo
751 fi
752 echo "#"
753 sed -e 's|^|# |' -e 's|^# $|#|'
754 else
755 cat
756 fi
757}
758#
759# List all submodules, prefixed with:
760# - submodule not initialized
761# + different revision checked out
762#
763# If --cached was specified the revision in the index will be printed
764# instead of the currently checked out revision.
765#
766# $@ = requested paths (default to all)
767#
768cmd_status()
769{
770 # parse $args after "submodule ... status".
771 orig_flags=
772 while test $# -ne 0
773 do
774 case "$1" in
775 -q|--quiet)
776 GIT_QUIET=1
777 ;;
778 --cached)
779 cached=1
780 ;;
781 --recursive)
782 recursive=1
783 ;;
784 --)
785 shift
786 break
787 ;;
788 -*)
789 usage
790 ;;
791 *)
792 break
793 ;;
794 esac
795 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
796 shift
797 done
798 module_list "$@" |
800 while read mode sha1 stage path
801 do
802 name=$(module_name "$path") || exit
803 url=$(git config submodule."$name".url)
804 displaypath="$prefix$path"
805 if test "$stage" = U
806 then
807 say "U$sha1 $displaypath"
808 continue
809 fi
810 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
811 then
812 say "-$sha1 $displaypath"
813 continue;
814 fi
815 set_name_rev "$path" "$sha1"
816 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
817 then
818 say " $sha1 $displaypath$revname"
819 else
820 if test -z "$cached"
821 then
822 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
823 set_name_rev "$path" "$sha1"
824 fi
825 say "+$sha1 $displaypath$revname"
826 fi
827 if test -n "$recursive"
829 then
830 (
831 prefix="$displaypath/"
832 clear_local_git_env
833 cd "$path" &&
834 eval cmd_status "$orig_args"
835 ) ||
836 die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
837 fi
838 done
839}
840#
841# Sync remote urls for submodules
842# This makes the value for remote.$remote.url match the value
843# specified in .gitmodules.
844#
845cmd_sync()
846{
847 while test $# -ne 0
848 do
849 case "$1" in
850 -q|--quiet)
851 GIT_QUIET=1
852 shift
853 ;;
854 --)
855 shift
856 break
857 ;;
858 -*)
859 usage
860 ;;
861 *)
862 break
863 ;;
864 esac
865 done
866 cd_to_toplevel
867 module_list "$@" |
868 while read mode sha1 stage path
869 do
870 name=$(module_name "$path")
871 url=$(git config -f .gitmodules --get submodule."$name".url)
872 # Possibly a url relative to parent
874 case "$url" in
875 ./*|../*)
876 url=$(resolve_relative_url "$url") || exit
877 ;;
878 esac
879 say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
881 git config submodule."$name".url "$url"
882 if test -e "$path"/.git
884 then
885 (
886 clear_local_git_env
887 cd "$path"
888 remote=$(get_default_remote)
889 git config remote."$remote".url "$url"
890 )
891 fi
892 done
893}
894# This loop parses the command line arguments to find the
896# subcommand name to dispatch. Parsing of the subcommand specific
897# options are primarily done by the subcommand implementations.
898# Subcommand specific options such as --branch and --cached are
899# parsed here as well, for backward compatibility.
900while test $# != 0 && test -z "$command"
902do
903 case "$1" in
904 add | foreach | init | update | status | summary | sync)
905 command=$1
906 ;;
907 -q|--quiet)
908 GIT_QUIET=1
909 ;;
910 -b|--branch)
911 case "$2" in
912 '')
913 usage
914 ;;
915 esac
916 branch="$2"; shift
917 ;;
918 --cached)
919 cached="$1"
920 ;;
921 --)
922 break
923 ;;
924 -*)
925 usage
926 ;;
927 *)
928 break
929 ;;
930 esac
931 shift
932done
933# No command word defaults to "status"
935test -n "$command" || command=status
936# "-b branch" is accepted only by "add"
938if test -n "$branch" && test "$command" != add
939then
940 usage
941fi
942# "--cached" is accepted only by "status" and "summary"
944if test -n "$cached" && test "$command" != status -a "$command" != summary
945then
946 usage
947fi
948"cmd_$command" "$@"