l10n: zh_TW.po: v2.31.0 round 2 (15 untranslated)
[git] / git-submodule.sh
1 #!/bin/sh
2 #
3 # git-submodule.sh: add, init, update or list git submodules
4 #
5 # Copyright (c) 2007 Lars Hjemli
6
7 dashless=$(basename "$0" | sed -e 's/-/ /')
8 USAGE="[--quiet] [--cached]
9    or: $dashless [--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
10    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
11    or: $dashless [--quiet] init [--] [<path>...]
12    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
13    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--[no-]single-branch] [--] [<path>...]
14    or: $dashless [--quiet] set-branch (--default|--branch <branch>) [--] <path>
15    or: $dashless [--quiet] set-url [--] <path> <newurl>
16    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
17    or: $dashless [--quiet] foreach [--recursive] <command>
18    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
19    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
20 OPTIONS_SPEC=
21 SUBDIRECTORY_OK=Yes
22 . git-sh-setup
23 require_work_tree
24 wt_prefix=$(git rev-parse --show-prefix)
25 cd_to_toplevel
26
27 # Tell the rest of git that any URLs we get don't come
28 # directly from the user, so it can apply policy as appropriate.
29 GIT_PROTOCOL_FROM_USER=0
30 export GIT_PROTOCOL_FROM_USER
31
32 command=
33 branch=
34 force=
35 reference=
36 cached=
37 recursive=
38 init=
39 require_init=
40 files=
41 remote=
42 nofetch=
43 update=
44 prefix=
45 custom_name=
46 depth=
47 progress=
48 dissociate=
49 single_branch=
50 jobs=
51 recommend_shallow=
52
53 die_if_unmatched ()
54 {
55         if test "$1" = "#unmatched"
56         then
57                 exit ${2:-1}
58         fi
59 }
60
61 isnumber()
62 {
63         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
64 }
65
66 # Given a full hex object ID, is this the zero OID?
67 is_zero_oid () {
68         echo "$1" | sane_egrep '^0+$' >/dev/null 2>&1
69 }
70
71 # Sanitize the local git environment for use within a submodule. We
72 # can't simply use clear_local_git_env since we want to preserve some
73 # of the settings from GIT_CONFIG_PARAMETERS.
74 sanitize_submodule_env()
75 {
76         save_config=$GIT_CONFIG_PARAMETERS
77         clear_local_git_env
78         GIT_CONFIG_PARAMETERS=$save_config
79         export GIT_CONFIG_PARAMETERS
80 }
81
82 #
83 # Add a new submodule to the working tree, .gitmodules and the index
84 #
85 # $@ = repo path
86 #
87 # optional branch is stored in global branch variable
88 #
89 cmd_add()
90 {
91         # parse $args after "submodule ... add".
92         reference_path=
93         while test $# -ne 0
94         do
95                 case "$1" in
96                 -b | --branch)
97                         case "$2" in '') usage ;; esac
98                         branch=$2
99                         shift
100                         ;;
101                 -f | --force)
102                         force=$1
103                         ;;
104                 -q|--quiet)
105                         GIT_QUIET=1
106                         ;;
107                 --progress)
108                         progress=1
109                         ;;
110                 --reference)
111                         case "$2" in '') usage ;; esac
112                         reference_path=$2
113                         shift
114                         ;;
115                 --reference=*)
116                         reference_path="${1#--reference=}"
117                         ;;
118                 --dissociate)
119                         dissociate=1
120                         ;;
121                 --name)
122                         case "$2" in '') usage ;; esac
123                         custom_name=$2
124                         shift
125                         ;;
126                 --depth)
127                         case "$2" in '') usage ;; esac
128                         depth="--depth=$2"
129                         shift
130                         ;;
131                 --depth=*)
132                         depth=$1
133                         ;;
134                 --)
135                         shift
136                         break
137                         ;;
138                 -*)
139                         usage
140                         ;;
141                 *)
142                         break
143                         ;;
144                 esac
145                 shift
146         done
147
148         if ! git submodule--helper config --check-writeable >/dev/null 2>&1
149         then
150                  die "$(eval_gettext "please make sure that the .gitmodules file is in the working tree")"
151         fi
152
153         if test -n "$reference_path"
154         then
155                 is_absolute_path "$reference_path" ||
156                 reference_path="$wt_prefix$reference_path"
157
158                 reference="--reference=$reference_path"
159         fi
160
161         repo=$1
162         sm_path=$2
163
164         if test -z "$sm_path"; then
165                 sm_path=$(printf '%s\n' "$repo" |
166                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
167         fi
168
169         if test -z "$repo" || test -z "$sm_path"; then
170                 usage
171         fi
172
173         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
174
175         # assure repo is absolute or relative to parent
176         case "$repo" in
177         ./*|../*)
178                 test -z "$wt_prefix" ||
179                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
180
181                 # dereference source url relative to parent's url
182                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
183                 ;;
184         *:*|/*)
185                 # absolute url
186                 realrepo=$repo
187                 ;;
188         *)
189                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
190         ;;
191         esac
192
193         # normalize path:
194         # multiple //; leading ./; /./; /../; trailing /
195         sm_path=$(printf '%s/\n' "$sm_path" |
196                 sed -e '
197                         s|//*|/|g
198                         s|^\(\./\)*||
199                         s|/\(\./\)*|/|g
200                         :start
201                         s|\([^/]*\)/\.\./||
202                         tstart
203                         s|/*$||
204                 ')
205         if test -z "$force"
206         then
207                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
208                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
209         else
210                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
211                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
212         fi
213
214         if test -d "$sm_path" &&
215                 test -z $(git -C "$sm_path" rev-parse --show-cdup 2>/dev/null)
216         then
217             git -C "$sm_path" rev-parse --verify -q HEAD >/dev/null ||
218             die "$(eval_gettext "'\$sm_path' does not have a commit checked out")"
219         fi
220
221         if test -z "$force"
222         then
223             dryerr=$(git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" 2>&1 >/dev/null)
224             res=$?
225             if test $res -ne 0
226             then
227                  echo >&2 "$dryerr"
228                  exit $res
229             fi
230         fi
231
232         if test -n "$custom_name"
233         then
234                 sm_name="$custom_name"
235         else
236                 sm_name="$sm_path"
237         fi
238
239         if ! git submodule--helper check-name "$sm_name"
240         then
241                 die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
242         fi
243
244         # perhaps the path exists and is already a git repo, else clone it
245         if test -e "$sm_path"
246         then
247                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
248                 then
249                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
250                 else
251                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
252                 fi
253
254         else
255                 if test -d ".git/modules/$sm_name"
256                 then
257                         if test -z "$force"
258                         then
259                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
260                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
261                                 die "$(eval_gettextln "\
262 If you want to reuse this local git directory instead of cloning again from
263   \$realrepo
264 use the '--force' option. If the local git directory is not the correct repo
265 or you are unsure what this means choose another name with the '--name' option.")"
266                         else
267                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
268                         fi
269                 fi
270                 git submodule--helper clone ${GIT_QUIET:+--quiet} ${progress:+"--progress"} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${dissociate:+"--dissociate"} ${depth:+"$depth"} || exit
271                 (
272                         sanitize_submodule_env
273                         cd "$sm_path" &&
274                         # ash fails to wordsplit ${branch:+-b "$branch"...}
275                         case "$branch" in
276                         '') git checkout -f -q ;;
277                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
278                         esac
279                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
280         fi
281         git config submodule."$sm_name".url "$realrepo"
282
283         git add --no-warn-embedded-repo $force "$sm_path" ||
284         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
285
286         git submodule--helper config submodule."$sm_name".path "$sm_path" &&
287         git submodule--helper config submodule."$sm_name".url "$repo" &&
288         if test -n "$branch"
289         then
290                 git submodule--helper config submodule."$sm_name".branch "$branch"
291         fi &&
292         git add --force .gitmodules ||
293         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
294
295         # NEEDSWORK: In a multi-working-tree world, this needs to be
296         # set in the per-worktree config.
297         if git config --get submodule.active >/dev/null
298         then
299                 # If the submodule being adding isn't already covered by the
300                 # current configured pathspec, set the submodule's active flag
301                 if ! git submodule--helper is-active "$sm_path"
302                 then
303                         git config submodule."$sm_name".active "true"
304                 fi
305         else
306                 git config submodule."$sm_name".active "true"
307         fi
308 }
309
310 #
311 # Execute an arbitrary command sequence in each checked out
312 # submodule
313 #
314 # $@ = command to execute
315 #
316 cmd_foreach()
317 {
318         # parse $args after "submodule ... foreach".
319         while test $# -ne 0
320         do
321                 case "$1" in
322                 -q|--quiet)
323                         GIT_QUIET=1
324                         ;;
325                 --recursive)
326                         recursive=1
327                         ;;
328                 -*)
329                         usage
330                         ;;
331                 *)
332                         break
333                         ;;
334                 esac
335                 shift
336         done
337
338         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
339 }
340
341 #
342 # Register submodules in .git/config
343 #
344 # $@ = requested paths (default to all)
345 #
346 cmd_init()
347 {
348         # parse $args after "submodule ... init".
349         while test $# -ne 0
350         do
351                 case "$1" in
352                 -q|--quiet)
353                         GIT_QUIET=1
354                         ;;
355                 --)
356                         shift
357                         break
358                         ;;
359                 -*)
360                         usage
361                         ;;
362                 *)
363                         break
364                         ;;
365                 esac
366                 shift
367         done
368
369         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
370 }
371
372 #
373 # Unregister submodules from .git/config and remove their work tree
374 #
375 cmd_deinit()
376 {
377         # parse $args after "submodule ... deinit".
378         deinit_all=
379         while test $# -ne 0
380         do
381                 case "$1" in
382                 -f|--force)
383                         force=$1
384                         ;;
385                 -q|--quiet)
386                         GIT_QUIET=1
387                         ;;
388                 --all)
389                         deinit_all=t
390                         ;;
391                 --)
392                         shift
393                         break
394                         ;;
395                 -*)
396                         usage
397                         ;;
398                 *)
399                         break
400                         ;;
401                 esac
402                 shift
403         done
404
405         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} -- "$@"
406 }
407
408 is_tip_reachable () (
409         sanitize_submodule_env &&
410         cd "$1" &&
411         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
412         test -z "$rev"
413 )
414
415 # usage: fetch_in_submodule <module_path> [<depth>] [<sha1>]
416 # Because arguments are positional, use an empty string to omit <depth>
417 # but include <sha1>.
418 fetch_in_submodule () (
419         sanitize_submodule_env &&
420         cd "$1" &&
421         if test $# -eq 3
422         then
423                 echo "$3" | git fetch --stdin ${2:+"$2"}
424         else
425                 git fetch ${2:+"$2"}
426         fi
427 )
428
429 #
430 # Update each submodule path to correct revision, using clone and checkout as needed
431 #
432 # $@ = requested paths (default to all)
433 #
434 cmd_update()
435 {
436         # parse $args after "submodule ... update".
437         while test $# -ne 0
438         do
439                 case "$1" in
440                 -q|--quiet)
441                         GIT_QUIET=1
442                         ;;
443                 -v)
444                         unset GIT_QUIET
445                         ;;
446                 --progress)
447                         progress=1
448                         ;;
449                 -i|--init)
450                         init=1
451                         ;;
452                 --require-init)
453                         init=1
454                         require_init=1
455                         ;;
456                 --remote)
457                         remote=1
458                         ;;
459                 -N|--no-fetch)
460                         nofetch=1
461                         ;;
462                 -f|--force)
463                         force=$1
464                         ;;
465                 -r|--rebase)
466                         update="rebase"
467                         ;;
468                 --reference)
469                         case "$2" in '') usage ;; esac
470                         reference="--reference=$2"
471                         shift
472                         ;;
473                 --reference=*)
474                         reference="$1"
475                         ;;
476                 --dissociate)
477                         dissociate=1
478                         ;;
479                 -m|--merge)
480                         update="merge"
481                         ;;
482                 --recursive)
483                         recursive=1
484                         ;;
485                 --checkout)
486                         update="checkout"
487                         ;;
488                 --recommend-shallow)
489                         recommend_shallow="--recommend-shallow"
490                         ;;
491                 --no-recommend-shallow)
492                         recommend_shallow="--no-recommend-shallow"
493                         ;;
494                 --depth)
495                         case "$2" in '') usage ;; esac
496                         depth="--depth=$2"
497                         shift
498                         ;;
499                 --depth=*)
500                         depth=$1
501                         ;;
502                 -j|--jobs)
503                         case "$2" in '') usage ;; esac
504                         jobs="--jobs=$2"
505                         shift
506                         ;;
507                 --jobs=*)
508                         jobs=$1
509                         ;;
510                 --single-branch)
511                         single_branch="--single-branch"
512                         ;;
513                 --no-single-branch)
514                         single_branch="--no-single-branch"
515                         ;;
516                 --)
517                         shift
518                         break
519                         ;;
520                 -*)
521                         usage
522                         ;;
523                 *)
524                         break
525                         ;;
526                 esac
527                 shift
528         done
529
530         if test -n "$init"
531         then
532                 cmd_init "--" "$@" || return
533         fi
534
535         {
536         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
537                 ${progress:+"--progress"} \
538                 ${wt_prefix:+--prefix "$wt_prefix"} \
539                 ${prefix:+--recursive-prefix "$prefix"} \
540                 ${update:+--update "$update"} \
541                 ${reference:+"$reference"} \
542                 ${dissociate:+"--dissociate"} \
543                 ${depth:+--depth "$depth"} \
544                 ${require_init:+--require-init} \
545                 $single_branch \
546                 $recommend_shallow \
547                 $jobs \
548                 -- \
549                 "$@" || echo "#unmatched" $?
550         } | {
551         err=
552         while read -r quickabort sha1 just_cloned sm_path
553         do
554                 die_if_unmatched "$quickabort" "$sha1"
555
556                 git submodule--helper ensure-core-worktree "$sm_path" || exit 1
557
558                 update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
559
560                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
561
562                 if test $just_cloned -eq 1
563                 then
564                         subsha1=
565                 else
566                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
567                                 git rev-parse --verify HEAD) ||
568                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
569                 fi
570
571                 if test -n "$remote"
572                 then
573                         branch=$(git submodule--helper remote-branch "$sm_path")
574                         if test -z "$nofetch"
575                         then
576                                 # Fetch remote before determining tracking $sha1
577                                 fetch_in_submodule "$sm_path" $depth ||
578                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
579                         fi
580                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && git submodule--helper print-default-remote)
581                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
582                                 git rev-parse --verify "${remote_name}/${branch}") ||
583                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
584                 fi
585
586                 if test "$subsha1" != "$sha1" || test -n "$force"
587                 then
588                         subforce=$force
589                         # If we don't already have a -f flag and the submodule has never been checked out
590                         if test -z "$subsha1" && test -z "$force"
591                         then
592                                 subforce="-f"
593                         fi
594
595                         if test -z "$nofetch"
596                         then
597                                 # Run fetch only if $sha1 isn't present or it
598                                 # is not reachable from a ref.
599                                 is_tip_reachable "$sm_path" "$sha1" ||
600                                 fetch_in_submodule "$sm_path" $depth ||
601                                 say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'; trying to directly fetch \$sha1:")"
602
603                                 # Now we tried the usual fetch, but $sha1 may
604                                 # not be reachable from any of the refs
605                                 is_tip_reachable "$sm_path" "$sha1" ||
606                                 fetch_in_submodule "$sm_path" "$depth" "$sha1" ||
607                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
608                         fi
609
610                         must_die_on_failure=
611                         case "$update_module" in
612                         checkout)
613                                 command="git checkout $subforce -q"
614                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
615                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
616                                 ;;
617                         rebase)
618                                 command="git rebase ${GIT_QUIET:+--quiet}"
619                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
620                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
621                                 must_die_on_failure=yes
622                                 ;;
623                         merge)
624                                 command="git merge ${GIT_QUIET:+--quiet}"
625                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
626                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
627                                 must_die_on_failure=yes
628                                 ;;
629                         !*)
630                                 command="${update_module#!}"
631                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
632                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
633                                 must_die_on_failure=yes
634                                 ;;
635                         *)
636                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
637                         esac
638
639                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
640                         then
641                                 say "$say_msg"
642                         elif test -n "$must_die_on_failure"
643                         then
644                                 die_with_status 2 "$die_msg"
645                         else
646                                 err="${err};$die_msg"
647                                 continue
648                         fi
649                 fi
650
651                 if test -n "$recursive"
652                 then
653                         (
654                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
655                                 wt_prefix=
656                                 sanitize_submodule_env
657                                 cd "$sm_path" &&
658                                 eval cmd_update
659                         )
660                         res=$?
661                         if test $res -gt 0
662                         then
663                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
664                                 if test $res -ne 2
665                                 then
666                                         err="${err};$die_msg"
667                                         continue
668                                 else
669                                         die_with_status $res "$die_msg"
670                                 fi
671                         fi
672                 fi
673         done
674
675         if test -n "$err"
676         then
677                 OIFS=$IFS
678                 IFS=';'
679                 for e in $err
680                 do
681                         if test -n "$e"
682                         then
683                                 echo >&2 "$e"
684                         fi
685                 done
686                 IFS=$OIFS
687                 exit 1
688         fi
689         }
690 }
691
692 #
693 # Configures a submodule's default branch
694 #
695 # $@ = requested path
696 #
697 cmd_set_branch() {
698         default=
699         branch=
700
701         while test $# -ne 0
702         do
703                 case "$1" in
704                 -q|--quiet)
705                         # we don't do anything with this but we need to accept it
706                         ;;
707                 -d|--default)
708                         default=1
709                         ;;
710                 -b|--branch)
711                         case "$2" in '') usage ;; esac
712                         branch=$2
713                         shift
714                         ;;
715                 --)
716                         shift
717                         break
718                         ;;
719                 -*)
720                         usage
721                         ;;
722                 *)
723                         break
724                         ;;
725                 esac
726                 shift
727         done
728
729         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-branch ${GIT_QUIET:+--quiet} ${branch:+--branch "$branch"} ${default:+--default} -- "$@"
730 }
731
732 #
733 # Configures a submodule's remote url
734 #
735 # $@ = requested path, requested url
736 #
737 cmd_set_url() {
738         while test $# -ne 0
739         do
740                 case "$1" in
741                 -q|--quiet)
742                         GIT_QUIET=1
743                         ;;
744                 --)
745                         shift
746                         break
747                         ;;
748                 -*)
749                         usage
750                         ;;
751                 *)
752                         break
753                         ;;
754                 esac
755                 shift
756         done
757
758         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-url ${GIT_QUIET:+--quiet} -- "$@"
759 }
760
761 #
762 # Show commit summary for submodules in index or working tree
763 #
764 # If '--cached' is given, show summary between index and given commit,
765 # or between working tree and given commit
766 #
767 # $@ = [commit (default 'HEAD'),] requested paths (default all)
768 #
769 cmd_summary() {
770         summary_limit=-1
771         for_status=
772         diff_cmd=diff-index
773
774         # parse $args after "submodule ... summary".
775         while test $# -ne 0
776         do
777                 case "$1" in
778                 --cached)
779                         cached="$1"
780                         ;;
781                 --files)
782                         files="$1"
783                         ;;
784                 --for-status)
785                         for_status="$1"
786                         ;;
787                 -n|--summary-limit)
788                         summary_limit="$2"
789                         isnumber "$summary_limit" || usage
790                         shift
791                         ;;
792                 --summary-limit=*)
793                         summary_limit="${1#--summary-limit=}"
794                         isnumber "$summary_limit" || usage
795                         ;;
796                 --)
797                         shift
798                         break
799                         ;;
800                 -*)
801                         usage
802                         ;;
803                 *)
804                         break
805                         ;;
806                 esac
807                 shift
808         done
809
810         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper summary ${prefix:+--prefix "$prefix"} ${files:+--files} ${cached:+--cached} ${for_status:+--for-status} ${summary_limit:+-n $summary_limit} -- "$@"
811 }
812 #
813 # List all submodules, prefixed with:
814 #  - submodule not initialized
815 #  + different revision checked out
816 #
817 # If --cached was specified the revision in the index will be printed
818 # instead of the currently checked out revision.
819 #
820 # $@ = requested paths (default to all)
821 #
822 cmd_status()
823 {
824         # parse $args after "submodule ... status".
825         while test $# -ne 0
826         do
827                 case "$1" in
828                 -q|--quiet)
829                         GIT_QUIET=1
830                         ;;
831                 --cached)
832                         cached=1
833                         ;;
834                 --recursive)
835                         recursive=1
836                         ;;
837                 --)
838                         shift
839                         break
840                         ;;
841                 -*)
842                         usage
843                         ;;
844                 *)
845                         break
846                         ;;
847                 esac
848                 shift
849         done
850
851         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} -- "$@"
852 }
853 #
854 # Sync remote urls for submodules
855 # This makes the value for remote.$remote.url match the value
856 # specified in .gitmodules.
857 #
858 cmd_sync()
859 {
860         while test $# -ne 0
861         do
862                 case "$1" in
863                 -q|--quiet)
864                         GIT_QUIET=1
865                         shift
866                         ;;
867                 --recursive)
868                         recursive=1
869                         shift
870                         ;;
871                 --)
872                         shift
873                         break
874                         ;;
875                 -*)
876                         usage
877                         ;;
878                 *)
879                         break
880                         ;;
881                 esac
882         done
883
884         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
885 }
886
887 cmd_absorbgitdirs()
888 {
889         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
890 }
891
892 # This loop parses the command line arguments to find the
893 # subcommand name to dispatch.  Parsing of the subcommand specific
894 # options are primarily done by the subcommand implementations.
895 # Subcommand specific options such as --branch and --cached are
896 # parsed here as well, for backward compatibility.
897
898 while test $# != 0 && test -z "$command"
899 do
900         case "$1" in
901         add | foreach | init | deinit | update | set-branch | set-url | status | summary | sync | absorbgitdirs)
902                 command=$1
903                 ;;
904         -q|--quiet)
905                 GIT_QUIET=1
906                 ;;
907         -b|--branch)
908                 case "$2" in
909                 '')
910                         usage
911                         ;;
912                 esac
913                 branch="$2"; shift
914                 ;;
915         --cached)
916                 cached="$1"
917                 ;;
918         --)
919                 break
920                 ;;
921         -*)
922                 usage
923                 ;;
924         *)
925                 break
926                 ;;
927         esac
928         shift
929 done
930
931 # No command word defaults to "status"
932 if test -z "$command"
933 then
934     if test $# = 0
935     then
936         command=status
937     else
938         usage
939     fi
940 fi
941
942 # "-b branch" is accepted only by "add" and "set-branch"
943 if test -n "$branch" && (test "$command" != add || test "$command" != set-branch)
944 then
945         usage
946 fi
947
948 # "--cached" is accepted only by "status" and "summary"
949 if test -n "$cached" && test "$command" != status && test "$command" != summary
950 then
951         usage
952 fi
953
954 "cmd_$(echo $command | sed -e s/-/_/g)" "$@"