t7411: check configuration parsing errors
[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] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
10    or: $dashless [--quiet] init [--] [<path>...]
11    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
14    or: $dashless [--quiet] foreach [--recursive] <command>
15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
16    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
17 OPTIONS_SPEC=
18 SUBDIRECTORY_OK=Yes
19 . git-sh-setup
20 . git-parse-remote
21 require_work_tree
22 wt_prefix=$(git rev-parse --show-prefix)
23 cd_to_toplevel
24
25 # Tell the rest of git that any URLs we get don't come
26 # directly from the user, so it can apply policy as appropriate.
27 GIT_PROTOCOL_FROM_USER=0
28 export GIT_PROTOCOL_FROM_USER
29
30 command=
31 branch=
32 force=
33 reference=
34 cached=
35 recursive=
36 init=
37 files=
38 remote=
39 nofetch=
40 update=
41 prefix=
42 custom_name=
43 depth=
44 progress=
45
46 die_if_unmatched ()
47 {
48         if test "$1" = "#unmatched"
49         then
50                 exit ${2:-1}
51         fi
52 }
53
54 #
55 # Print a submodule configuration setting
56 #
57 # $1 = submodule name
58 # $2 = option name
59 # $3 = default value
60 #
61 # Checks in the usual git-config places first (for overrides),
62 # otherwise it falls back on .gitmodules.  This allows you to
63 # distribute project-wide defaults in .gitmodules, while still
64 # customizing individual repositories if necessary.  If the option is
65 # not in .gitmodules either, print a default value.
66 #
67 get_submodule_config () {
68         name="$1"
69         option="$2"
70         default="$3"
71         value=$(git config submodule."$name"."$option")
72         if test -z "$value"
73         then
74                 value=$(git config -f .gitmodules submodule."$name"."$option")
75         fi
76         printf '%s' "${value:-$default}"
77 }
78
79 isnumber()
80 {
81         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
82 }
83
84 # Sanitize the local git environment for use within a submodule. We
85 # can't simply use clear_local_git_env since we want to preserve some
86 # of the settings from GIT_CONFIG_PARAMETERS.
87 sanitize_submodule_env()
88 {
89         save_config=$GIT_CONFIG_PARAMETERS
90         clear_local_git_env
91         GIT_CONFIG_PARAMETERS=$save_config
92         export GIT_CONFIG_PARAMETERS
93 }
94
95 #
96 # Add a new submodule to the working tree, .gitmodules and the index
97 #
98 # $@ = repo path
99 #
100 # optional branch is stored in global branch variable
101 #
102 cmd_add()
103 {
104         # parse $args after "submodule ... add".
105         reference_path=
106         while test $# -ne 0
107         do
108                 case "$1" in
109                 -b | --branch)
110                         case "$2" in '') usage ;; esac
111                         branch=$2
112                         shift
113                         ;;
114                 -f | --force)
115                         force=$1
116                         ;;
117                 -q|--quiet)
118                         GIT_QUIET=1
119                         ;;
120                 --reference)
121                         case "$2" in '') usage ;; esac
122                         reference_path=$2
123                         shift
124                         ;;
125                 --reference=*)
126                         reference_path="${1#--reference=}"
127                         ;;
128                 --name)
129                         case "$2" in '') usage ;; esac
130                         custom_name=$2
131                         shift
132                         ;;
133                 --depth)
134                         case "$2" in '') usage ;; esac
135                         depth="--depth=$2"
136                         shift
137                         ;;
138                 --depth=*)
139                         depth=$1
140                         ;;
141                 --)
142                         shift
143                         break
144                         ;;
145                 -*)
146                         usage
147                         ;;
148                 *)
149                         break
150                         ;;
151                 esac
152                 shift
153         done
154
155         if test -n "$reference_path"
156         then
157                 is_absolute_path "$reference_path" ||
158                 reference_path="$wt_prefix$reference_path"
159
160                 reference="--reference=$reference_path"
161         fi
162
163         repo=$1
164         sm_path=$2
165
166         if test -z "$sm_path"; then
167                 sm_path=$(printf '%s\n' "$repo" |
168                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
169         fi
170
171         if test -z "$repo" || test -z "$sm_path"; then
172                 usage
173         fi
174
175         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
176
177         # assure repo is absolute or relative to parent
178         case "$repo" in
179         ./*|../*)
180                 test -z "$wt_prefix" ||
181                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
182
183                 # dereference source url relative to parent's url
184                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
185                 ;;
186         *:*|/*)
187                 # absolute url
188                 realrepo=$repo
189                 ;;
190         *)
191                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
192         ;;
193         esac
194
195         # normalize path:
196         # multiple //; leading ./; /./; /../; trailing /
197         sm_path=$(printf '%s/\n' "$sm_path" |
198                 sed -e '
199                         s|//*|/|g
200                         s|^\(\./\)*||
201                         s|/\(\./\)*|/|g
202                         :start
203                         s|\([^/]*\)/\.\./||
204                         tstart
205                         s|/*$||
206                 ')
207         if test -z "$force"
208         then
209                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
210                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
211         else
212                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
213                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
214         fi
215
216         if test -z "$force" &&
217                 ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
218         then
219                 eval_gettextln "The following path is ignored by one of your .gitignore files:
220 \$sm_path
221 Use -f if you really want to add it." >&2
222                 exit 1
223         fi
224
225         if test -n "$custom_name"
226         then
227                 sm_name="$custom_name"
228         else
229                 sm_name="$sm_path"
230         fi
231
232         # perhaps the path exists and is already a git repo, else clone it
233         if test -e "$sm_path"
234         then
235                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
236                 then
237                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
238                 else
239                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
240                 fi
241
242         else
243                 if test -d ".git/modules/$sm_name"
244                 then
245                         if test -z "$force"
246                         then
247                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
248                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
249                                 die "$(eval_gettextln "\
250 If you want to reuse this local git directory instead of cloning again from
251   \$realrepo
252 use the '--force' option. If the local git directory is not the correct repo
253 or you are unsure what this means choose another name with the '--name' option.")"
254                         else
255                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
256                         fi
257                 fi
258                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
259                 (
260                         sanitize_submodule_env
261                         cd "$sm_path" &&
262                         # ash fails to wordsplit ${branch:+-b "$branch"...}
263                         case "$branch" in
264                         '') git checkout -f -q ;;
265                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
266                         esac
267                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
268         fi
269         git config submodule."$sm_name".url "$realrepo"
270
271         git add --no-warn-embedded-repo $force "$sm_path" ||
272         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
273
274         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
275         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
276         if test -n "$branch"
277         then
278                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
279         fi &&
280         git add --force .gitmodules ||
281         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
282
283         # NEEDSWORK: In a multi-working-tree world, this needs to be
284         # set in the per-worktree config.
285         if git config --get submodule.active >/dev/null
286         then
287                 # If the submodule being adding isn't already covered by the
288                 # current configured pathspec, set the submodule's active flag
289                 if ! git submodule--helper is-active "$sm_path"
290                 then
291                         git config submodule."$sm_name".active "true"
292                 fi
293         else
294                 git config submodule."$sm_name".active "true"
295         fi
296 }
297
298 #
299 # Execute an arbitrary command sequence in each checked out
300 # submodule
301 #
302 # $@ = command to execute
303 #
304 cmd_foreach()
305 {
306         # parse $args after "submodule ... foreach".
307         while test $# -ne 0
308         do
309                 case "$1" in
310                 -q|--quiet)
311                         GIT_QUIET=1
312                         ;;
313                 --recursive)
314                         recursive=1
315                         ;;
316                 -*)
317                         usage
318                         ;;
319                 *)
320                         break
321                         ;;
322                 esac
323                 shift
324         done
325
326         toplevel=$(pwd)
327
328         # dup stdin so that it can be restored when running the external
329         # command in the subshell (and a recursive call to this function)
330         exec 3<&0
331
332         {
333                 git submodule--helper list --prefix "$wt_prefix" ||
334                 echo "#unmatched" $?
335         } |
336         while read -r mode sha1 stage sm_path
337         do
338                 die_if_unmatched "$mode" "$sha1"
339                 if test -e "$sm_path"/.git
340                 then
341                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
342                         say "$(eval_gettext "Entering '\$displaypath'")"
343                         name=$(git submodule--helper name "$sm_path")
344                         (
345                                 prefix="$prefix$sm_path/"
346                                 sanitize_submodule_env
347                                 cd "$sm_path" &&
348                                 sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
349                                 # we make $path available to scripts ...
350                                 path=$sm_path &&
351                                 if test $# -eq 1
352                                 then
353                                         eval "$1"
354                                 else
355                                         "$@"
356                                 fi &&
357                                 if test -n "$recursive"
358                                 then
359                                         cmd_foreach "--recursive" "$@"
360                                 fi
361                         ) <&3 3<&- ||
362                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
363                 fi
364         done
365 }
366
367 #
368 # Register submodules in .git/config
369 #
370 # $@ = requested paths (default to all)
371 #
372 cmd_init()
373 {
374         # parse $args after "submodule ... init".
375         while test $# -ne 0
376         do
377                 case "$1" in
378                 -q|--quiet)
379                         GIT_QUIET=1
380                         ;;
381                 --)
382                         shift
383                         break
384                         ;;
385                 -*)
386                         usage
387                         ;;
388                 *)
389                         break
390                         ;;
391                 esac
392                 shift
393         done
394
395         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
396 }
397
398 #
399 # Unregister submodules from .git/config and remove their work tree
400 #
401 cmd_deinit()
402 {
403         # parse $args after "submodule ... deinit".
404         deinit_all=
405         while test $# -ne 0
406         do
407                 case "$1" in
408                 -f|--force)
409                         force=$1
410                         ;;
411                 -q|--quiet)
412                         GIT_QUIET=1
413                         ;;
414                 --all)
415                         deinit_all=t
416                         ;;
417                 --)
418                         shift
419                         break
420                         ;;
421                 -*)
422                         usage
423                         ;;
424                 *)
425                         break
426                         ;;
427                 esac
428                 shift
429         done
430
431         if test -n "$deinit_all" && test "$#" -ne 0
432         then
433                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
434                 usage
435         fi
436         if test $# = 0 && test -z "$deinit_all"
437         then
438                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
439         fi
440
441         {
442                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
443                 echo "#unmatched" $?
444         } |
445         while read -r mode sha1 stage sm_path
446         do
447                 die_if_unmatched "$mode" "$sha1"
448                 name=$(git submodule--helper name "$sm_path") || exit
449
450                 displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
451
452                 # Remove the submodule work tree (unless the user already did it)
453                 if test -d "$sm_path"
454                 then
455                         # Protect submodules containing a .git directory
456                         if test -d "$sm_path/.git"
457                         then
458                                 die "$(eval_gettext "\
459 Submodule work tree '\$displaypath' contains a .git directory
460 (use 'rm -rf' if you really want to remove it including all of its history)")"
461                         fi
462
463                         if test -z "$force"
464                         then
465                                 git rm -qn "$sm_path" ||
466                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
467                         fi
468                         rm -rf "$sm_path" &&
469                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
470                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
471                 fi
472
473                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
474
475                 # Remove the .git/config entries (unless the user already did it)
476                 if test -n "$(git config --get-regexp submodule."$name\.")"
477                 then
478                         # Remove the whole section so we have a clean state when
479                         # the user later decides to init this submodule again
480                         url=$(git config submodule."$name".url)
481                         git config --remove-section submodule."$name" 2>/dev/null &&
482                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
483                 fi
484         done
485 }
486
487 is_tip_reachable () (
488         sanitize_submodule_env &&
489         cd "$1" &&
490         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
491         test -z "$rev"
492 )
493
494 fetch_in_submodule () (
495         sanitize_submodule_env &&
496         cd "$1" &&
497         case "$2" in
498         '')
499                 git fetch ;;
500         *)
501                 shift
502                 git fetch $(get_default_remote) "$@" ;;
503         esac
504 )
505
506 #
507 # Update each submodule path to correct revision, using clone and checkout as needed
508 #
509 # $@ = requested paths (default to all)
510 #
511 cmd_update()
512 {
513         # parse $args after "submodule ... update".
514         while test $# -ne 0
515         do
516                 case "$1" in
517                 -q|--quiet)
518                         GIT_QUIET=1
519                         ;;
520                 --progress)
521                         progress="--progress"
522                         ;;
523                 -i|--init)
524                         init=1
525                         ;;
526                 --remote)
527                         remote=1
528                         ;;
529                 -N|--no-fetch)
530                         nofetch=1
531                         ;;
532                 -f|--force)
533                         force=$1
534                         ;;
535                 -r|--rebase)
536                         update="rebase"
537                         ;;
538                 --reference)
539                         case "$2" in '') usage ;; esac
540                         reference="--reference=$2"
541                         shift
542                         ;;
543                 --reference=*)
544                         reference="$1"
545                         ;;
546                 -m|--merge)
547                         update="merge"
548                         ;;
549                 --recursive)
550                         recursive=1
551                         ;;
552                 --checkout)
553                         update="checkout"
554                         ;;
555                 --recommend-shallow)
556                         recommend_shallow="--recommend-shallow"
557                         ;;
558                 --no-recommend-shallow)
559                         recommend_shallow="--no-recommend-shallow"
560                         ;;
561                 --depth)
562                         case "$2" in '') usage ;; esac
563                         depth="--depth=$2"
564                         shift
565                         ;;
566                 --depth=*)
567                         depth=$1
568                         ;;
569                 -j|--jobs)
570                         case "$2" in '') usage ;; esac
571                         jobs="--jobs=$2"
572                         shift
573                         ;;
574                 --jobs=*)
575                         jobs=$1
576                         ;;
577                 --)
578                         shift
579                         break
580                         ;;
581                 -*)
582                         usage
583                         ;;
584                 *)
585                         break
586                         ;;
587                 esac
588                 shift
589         done
590
591         if test -n "$init"
592         then
593                 cmd_init "--" "$@" || return
594         fi
595
596         {
597         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
598                 ${progress:+"$progress"} \
599                 ${wt_prefix:+--prefix "$wt_prefix"} \
600                 ${prefix:+--recursive-prefix "$prefix"} \
601                 ${update:+--update "$update"} \
602                 ${reference:+"$reference"} \
603                 ${depth:+--depth "$depth"} \
604                 ${recommend_shallow:+"$recommend_shallow"} \
605                 ${jobs:+$jobs} \
606                 "$@" || echo "#unmatched" $?
607         } | {
608         err=
609         while read -r mode sha1 stage just_cloned sm_path
610         do
611                 die_if_unmatched "$mode" "$sha1"
612
613                 name=$(git submodule--helper name "$sm_path") || exit
614                 url=$(git config submodule."$name".url)
615                 if ! test -z "$update"
616                 then
617                         update_module=$update
618                 else
619                         update_module=$(git config submodule."$name".update)
620                         if test -z "$update_module"
621                         then
622                                 update_module="checkout"
623                         fi
624                 fi
625
626                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
627
628                 if test $just_cloned -eq 1
629                 then
630                         subsha1=
631                         case "$update_module" in
632                         merge | rebase | none)
633                                 update_module=checkout ;;
634                         esac
635                 else
636                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
637                                 git rev-parse --verify HEAD) ||
638                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
639                 fi
640
641                 if test -n "$remote"
642                 then
643                         branch=$(git submodule--helper remote-branch "$sm_path")
644                         if test -z "$nofetch"
645                         then
646                                 # Fetch remote before determining tracking $sha1
647                                 fetch_in_submodule "$sm_path" $depth ||
648                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
649                         fi
650                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
651                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
652                                 git rev-parse --verify "${remote_name}/${branch}") ||
653                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
654                 fi
655
656                 if test "$subsha1" != "$sha1" || test -n "$force"
657                 then
658                         subforce=$force
659                         # If we don't already have a -f flag and the submodule has never been checked out
660                         if test -z "$subsha1" && test -z "$force"
661                         then
662                                 subforce="-f"
663                         fi
664
665                         if test -z "$nofetch"
666                         then
667                                 # Run fetch only if $sha1 isn't present or it
668                                 # is not reachable from a ref.
669                                 is_tip_reachable "$sm_path" "$sha1" ||
670                                 fetch_in_submodule "$sm_path" $depth ||
671                                 die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
672
673                                 # Now we tried the usual fetch, but $sha1 may
674                                 # not be reachable from any of the refs
675                                 is_tip_reachable "$sm_path" "$sha1" ||
676                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
677                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
678                         fi
679
680                         must_die_on_failure=
681                         case "$update_module" in
682                         checkout)
683                                 command="git checkout $subforce -q"
684                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
685                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
686                                 ;;
687                         rebase)
688                                 command="git rebase"
689                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
690                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
691                                 must_die_on_failure=yes
692                                 ;;
693                         merge)
694                                 command="git merge"
695                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
696                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
697                                 must_die_on_failure=yes
698                                 ;;
699                         !*)
700                                 command="${update_module#!}"
701                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
702                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
703                                 must_die_on_failure=yes
704                                 ;;
705                         *)
706                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
707                         esac
708
709                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
710                         then
711                                 say "$say_msg"
712                         elif test -n "$must_die_on_failure"
713                         then
714                                 die_with_status 2 "$die_msg"
715                         else
716                                 err="${err};$die_msg"
717                                 continue
718                         fi
719                 fi
720
721                 if test -n "$recursive"
722                 then
723                         (
724                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
725                                 wt_prefix=
726                                 sanitize_submodule_env
727                                 cd "$sm_path" &&
728                                 eval cmd_update
729                         )
730                         res=$?
731                         if test $res -gt 0
732                         then
733                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
734                                 if test $res -ne 2
735                                 then
736                                         err="${err};$die_msg"
737                                         continue
738                                 else
739                                         die_with_status $res "$die_msg"
740                                 fi
741                         fi
742                 fi
743         done
744
745         if test -n "$err"
746         then
747                 OIFS=$IFS
748                 IFS=';'
749                 for e in $err
750                 do
751                         if test -n "$e"
752                         then
753                                 echo >&2 "$e"
754                         fi
755                 done
756                 IFS=$OIFS
757                 exit 1
758         fi
759         }
760 }
761
762 set_name_rev () {
763         revname=$( (
764                 sanitize_submodule_env
765                 cd "$1" && {
766                         git describe "$2" 2>/dev/null ||
767                         git describe --tags "$2" 2>/dev/null ||
768                         git describe --contains "$2" 2>/dev/null ||
769                         git describe --all --always "$2"
770                 }
771         ) )
772         test -z "$revname" || revname=" ($revname)"
773 }
774 #
775 # Show commit summary for submodules in index or working tree
776 #
777 # If '--cached' is given, show summary between index and given commit,
778 # or between working tree and given commit
779 #
780 # $@ = [commit (default 'HEAD'),] requested paths (default all)
781 #
782 cmd_summary() {
783         summary_limit=-1
784         for_status=
785         diff_cmd=diff-index
786
787         # parse $args after "submodule ... summary".
788         while test $# -ne 0
789         do
790                 case "$1" in
791                 --cached)
792                         cached="$1"
793                         ;;
794                 --files)
795                         files="$1"
796                         ;;
797                 --for-status)
798                         for_status="$1"
799                         ;;
800                 -n|--summary-limit)
801                         summary_limit="$2"
802                         isnumber "$summary_limit" || usage
803                         shift
804                         ;;
805                 --summary-limit=*)
806                         summary_limit="${1#--summary-limit=}"
807                         isnumber "$summary_limit" || usage
808                         ;;
809                 --)
810                         shift
811                         break
812                         ;;
813                 -*)
814                         usage
815                         ;;
816                 *)
817                         break
818                         ;;
819                 esac
820                 shift
821         done
822
823         test $summary_limit = 0 && return
824
825         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
826         then
827                 head=$rev
828                 test $# = 0 || shift
829         elif test -z "$1" || test "$1" = "HEAD"
830         then
831                 # before the first commit: compare with an empty tree
832                 head=$(git hash-object -w -t tree --stdin </dev/null)
833                 test -z "$1" || shift
834         else
835                 head="HEAD"
836         fi
837
838         if [ -n "$files" ]
839         then
840                 test -n "$cached" &&
841                 die "$(gettext "The --cached option cannot be used with the --files option")"
842                 diff_cmd=diff-files
843                 head=
844         fi
845
846         cd_to_toplevel
847         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
848         # Get modified modules cared by user
849         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
850                 sane_egrep '^:([0-7]* )?160000' |
851                 while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
852                 do
853                         # Always show modules deleted or type-changed (blob<->module)
854                         if test "$status" = D || test "$status" = T
855                         then
856                                 printf '%s\n' "$sm_path"
857                                 continue
858                         fi
859                         # Respect the ignore setting for --for-status.
860                         if test -n "$for_status"
861                         then
862                                 name=$(git submodule--helper name "$sm_path")
863                                 ignore_config=$(get_submodule_config "$name" ignore none)
864                                 test $status != A && test $ignore_config = all && continue
865                         fi
866                         # Also show added or modified modules which are checked out
867                         GIT_DIR="$sm_path/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
868                         printf '%s\n' "$sm_path"
869                 done
870         )
871
872         test -z "$modules" && return
873
874         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
875         sane_egrep '^:([0-7]* )?160000' |
876         cut -c2- |
877         while read -r mod_src mod_dst sha1_src sha1_dst status name
878         do
879                 if test -z "$cached" &&
880                         test $sha1_dst = 0000000000000000000000000000000000000000
881                 then
882                         case "$mod_dst" in
883                         160000)
884                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
885                                 ;;
886                         100644 | 100755 | 120000)
887                                 sha1_dst=$(git hash-object $name)
888                                 ;;
889                         000000)
890                                 ;; # removed
891                         *)
892                                 # unexpected type
893                                 eval_gettextln "unexpected mode \$mod_dst" >&2
894                                 continue ;;
895                         esac
896                 fi
897                 missing_src=
898                 missing_dst=
899
900                 test $mod_src = 160000 &&
901                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
902                 missing_src=t
903
904                 test $mod_dst = 160000 &&
905                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
906                 missing_dst=t
907
908                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
909
910                 total_commits=
911                 case "$missing_src,$missing_dst" in
912                 t,)
913                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
914                         ;;
915                 ,t)
916                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
917                         ;;
918                 t,t)
919                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
920                         ;;
921                 *)
922                         errmsg=
923                         total_commits=$(
924                         if test $mod_src = 160000 && test $mod_dst = 160000
925                         then
926                                 range="$sha1_src...$sha1_dst"
927                         elif test $mod_src = 160000
928                         then
929                                 range=$sha1_src
930                         else
931                                 range=$sha1_dst
932                         fi
933                         GIT_DIR="$name/.git" \
934                         git rev-list --first-parent $range -- | wc -l
935                         )
936                         total_commits=" ($(($total_commits + 0)))"
937                         ;;
938                 esac
939
940                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
941                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
942                 if test $status = T
943                 then
944                         blob="$(gettext "blob")"
945                         submodule="$(gettext "submodule")"
946                         if test $mod_dst = 160000
947                         then
948                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
949                         else
950                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
951                         fi
952                 else
953                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
954                 fi
955                 if test -n "$errmsg"
956                 then
957                         # Don't give error msg for modification whose dst is not submodule
958                         # i.e. deleted or changed to blob
959                         test $mod_dst = 160000 && echo "$errmsg"
960                 else
961                         if test $mod_src = 160000 && test $mod_dst = 160000
962                         then
963                                 limit=
964                                 test $summary_limit -gt 0 && limit="-$summary_limit"
965                                 GIT_DIR="$name/.git" \
966                                 git log $limit --pretty='format:  %m %s' \
967                                 --first-parent $sha1_src...$sha1_dst
968                         elif test $mod_dst = 160000
969                         then
970                                 GIT_DIR="$name/.git" \
971                                 git log --pretty='format:  > %s' -1 $sha1_dst
972                         else
973                                 GIT_DIR="$name/.git" \
974                                 git log --pretty='format:  < %s' -1 $sha1_src
975                         fi
976                         echo
977                 fi
978                 echo
979         done
980 }
981 #
982 # List all submodules, prefixed with:
983 #  - submodule not initialized
984 #  + different revision checked out
985 #
986 # If --cached was specified the revision in the index will be printed
987 # instead of the currently checked out revision.
988 #
989 # $@ = requested paths (default to all)
990 #
991 cmd_status()
992 {
993         # parse $args after "submodule ... status".
994         while test $# -ne 0
995         do
996                 case "$1" in
997                 -q|--quiet)
998                         GIT_QUIET=1
999                         ;;
1000                 --cached)
1001                         cached=1
1002                         ;;
1003                 --recursive)
1004                         recursive=1
1005                         ;;
1006                 --)
1007                         shift
1008                         break
1009                         ;;
1010                 -*)
1011                         usage
1012                         ;;
1013                 *)
1014                         break
1015                         ;;
1016                 esac
1017                 shift
1018         done
1019
1020         {
1021                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1022                 echo "#unmatched" $?
1023         } |
1024         while read -r mode sha1 stage sm_path
1025         do
1026                 die_if_unmatched "$mode" "$sha1"
1027                 name=$(git submodule--helper name "$sm_path") || exit
1028                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1029                 if test "$stage" = U
1030                 then
1031                         say "U$sha1 $displaypath"
1032                         continue
1033                 fi
1034                 if ! git submodule--helper is-active "$sm_path" ||
1035                 {
1036                         ! test -d "$sm_path"/.git &&
1037                         ! test -f "$sm_path"/.git
1038                 }
1039                 then
1040                         say "-$sha1 $displaypath"
1041                         continue;
1042                 fi
1043                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1044                 then
1045                         set_name_rev "$sm_path" "$sha1"
1046                         say " $sha1 $displaypath$revname"
1047                 else
1048                         if test -z "$cached"
1049                         then
1050                                 sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1051                         fi
1052                         set_name_rev "$sm_path" "$sha1"
1053                         say "+$sha1 $displaypath$revname"
1054                 fi
1055
1056                 if test -n "$recursive"
1057                 then
1058                         (
1059                                 prefix="$displaypath/"
1060                                 sanitize_submodule_env
1061                                 wt_prefix=
1062                                 cd "$sm_path" &&
1063                                 eval cmd_status
1064                         ) ||
1065                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1066                 fi
1067         done
1068 }
1069 #
1070 # Sync remote urls for submodules
1071 # This makes the value for remote.$remote.url match the value
1072 # specified in .gitmodules.
1073 #
1074 cmd_sync()
1075 {
1076         while test $# -ne 0
1077         do
1078                 case "$1" in
1079                 -q|--quiet)
1080                         GIT_QUIET=1
1081                         shift
1082                         ;;
1083                 --recursive)
1084                         recursive=1
1085                         shift
1086                         ;;
1087                 --)
1088                         shift
1089                         break
1090                         ;;
1091                 -*)
1092                         usage
1093                         ;;
1094                 *)
1095                         break
1096                         ;;
1097                 esac
1098         done
1099         cd_to_toplevel
1100         {
1101                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1102                 echo "#unmatched" $?
1103         } |
1104         while read -r mode sha1 stage sm_path
1105         do
1106                 die_if_unmatched "$mode" "$sha1"
1107
1108                 # skip inactive submodules
1109                 if ! git submodule--helper is-active "$sm_path"
1110                 then
1111                         continue
1112                 fi
1113
1114                 name=$(git submodule--helper name "$sm_path")
1115                 url=$(git config -f .gitmodules --get submodule."$name".url)
1116
1117                 # Possibly a url relative to parent
1118                 case "$url" in
1119                 ./*|../*)
1120                         # rewrite foo/bar as ../.. to find path from
1121                         # submodule work tree to superproject work tree
1122                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1123                         # guarantee a trailing /
1124                         up_path=${up_path%/}/ &&
1125                         # path from submodule work tree to submodule origin repo
1126                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1127                         # path from superproject work tree to submodule origin repo
1128                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1129                         ;;
1130                 *)
1131                         sub_origin_url="$url"
1132                         super_config_url="$url"
1133                         ;;
1134                 esac
1135
1136                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1137                 say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1138                 git config submodule."$name".url "$super_config_url"
1139
1140                 if test -e "$sm_path"/.git
1141                 then
1142                 (
1143                         sanitize_submodule_env
1144                         cd "$sm_path"
1145                         remote=$(get_default_remote)
1146                         git config remote."$remote".url "$sub_origin_url"
1147
1148                         if test -n "$recursive"
1149                         then
1150                                 prefix="$prefix$sm_path/"
1151                                 eval cmd_sync
1152                         fi
1153                 )
1154                 fi
1155         done
1156 }
1157
1158 cmd_absorbgitdirs()
1159 {
1160         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1161 }
1162
1163 # This loop parses the command line arguments to find the
1164 # subcommand name to dispatch.  Parsing of the subcommand specific
1165 # options are primarily done by the subcommand implementations.
1166 # Subcommand specific options such as --branch and --cached are
1167 # parsed here as well, for backward compatibility.
1168
1169 while test $# != 0 && test -z "$command"
1170 do
1171         case "$1" in
1172         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1173                 command=$1
1174                 ;;
1175         -q|--quiet)
1176                 GIT_QUIET=1
1177                 ;;
1178         -b|--branch)
1179                 case "$2" in
1180                 '')
1181                         usage
1182                         ;;
1183                 esac
1184                 branch="$2"; shift
1185                 ;;
1186         --cached)
1187                 cached="$1"
1188                 ;;
1189         --)
1190                 break
1191                 ;;
1192         -*)
1193                 usage
1194                 ;;
1195         *)
1196                 break
1197                 ;;
1198         esac
1199         shift
1200 done
1201
1202 # No command word defaults to "status"
1203 if test -z "$command"
1204 then
1205     if test $# = 0
1206     then
1207         command=status
1208     else
1209         usage
1210     fi
1211 fi
1212
1213 # "-b branch" is accepted only by "add"
1214 if test -n "$branch" && test "$command" != add
1215 then
1216         usage
1217 fi
1218
1219 # "--cached" is accepted only by "status" and "summary"
1220 if test -n "$cached" && test "$command" != status && test "$command" != summary
1221 then
1222         usage
1223 fi
1224
1225 "cmd_$command" "$@"