l10n: Update Swedish translation (2080t0f0u)
[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] [--] <path>...
12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
14    or: $dashless [--quiet] foreach [--recursive] <command>
15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]"
16 OPTIONS_SPEC=
17 . git-sh-setup
18 . git-sh-i18n
19 . git-parse-remote
20 require_work_tree
21
22 command=
23 branch=
24 force=
25 reference=
26 cached=
27 recursive=
28 init=
29 files=
30 remote=
31 nofetch=
32 update=
33 prefix=
34 custom_name=
35
36 # The function takes at most 2 arguments. The first argument is the
37 # URL that navigates to the submodule origin repo. When relative, this URL
38 # is relative to the superproject origin URL repo. The second up_path
39 # argument, if specified, is the relative path that navigates
40 # from the submodule working tree to the superproject working tree.
41 #
42 # The output of the function is the origin URL of the submodule.
43 #
44 # The output will either be an absolute URL or filesystem path (if the
45 # superproject origin URL is an absolute URL or filesystem path,
46 # respectively) or a relative file system path (if the superproject
47 # origin URL is a relative file system path).
48 #
49 # When the output is a relative file system path, the path is either
50 # relative to the submodule working tree, if up_path is specified, or to
51 # the superproject working tree otherwise.
52 resolve_relative_url ()
53 {
54         remote=$(get_default_remote)
55         remoteurl=$(git config "remote.$remote.url") ||
56                 remoteurl=$(pwd) # the repository is its own authoritative upstream
57         url="$1"
58         remoteurl=${remoteurl%/}
59         sep=/
60         up_path="$2"
61
62         case "$remoteurl" in
63         *:*|/*)
64                 is_relative=
65                 ;;
66         ./*|../*)
67                 is_relative=t
68                 ;;
69         *)
70                 is_relative=t
71                 remoteurl="./$remoteurl"
72                 ;;
73         esac
74
75         while test -n "$url"
76         do
77                 case "$url" in
78                 ../*)
79                         url="${url#../}"
80                         case "$remoteurl" in
81                         */*)
82                                 remoteurl="${remoteurl%/*}"
83                                 ;;
84                         *:*)
85                                 remoteurl="${remoteurl%:*}"
86                                 sep=:
87                                 ;;
88                         *)
89                                 if test -z "$is_relative" || test "." = "$remoteurl"
90                                 then
91                                         die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
92                                 else
93                                         remoteurl=.
94                                 fi
95                                 ;;
96                         esac
97                         ;;
98                 ./*)
99                         url="${url#./}"
100                         ;;
101                 *)
102                         break;;
103                 esac
104         done
105         remoteurl="$remoteurl$sep${url%/}"
106         echo "${is_relative:+${up_path}}${remoteurl#./}"
107 }
108
109 #
110 # Get submodule info for registered submodules
111 # $@ = path to limit submodule list
112 #
113 module_list()
114 {
115         (
116                 git ls-files --error-unmatch --stage -- "$@" ||
117                 echo "unmatched pathspec exists"
118         ) |
119         perl -e '
120         my %unmerged = ();
121         my ($null_sha1) = ("0" x 40);
122         my @out = ();
123         my $unmatched = 0;
124         while (<STDIN>) {
125                 if (/^unmatched pathspec/) {
126                         $unmatched = 1;
127                         next;
128                 }
129                 chomp;
130                 my ($mode, $sha1, $stage, $path) =
131                         /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
132                 next unless $mode eq "160000";
133                 if ($stage ne "0") {
134                         if (!$unmerged{$path}++) {
135                                 push @out, "$mode $null_sha1 U\t$path\n";
136                         }
137                         next;
138                 }
139                 push @out, "$_\n";
140         }
141         if ($unmatched) {
142                 print "#unmatched\n";
143         } else {
144                 print for (@out);
145         }
146         '
147 }
148
149 die_if_unmatched ()
150 {
151         if test "$1" = "#unmatched"
152         then
153                 exit 1
154         fi
155 }
156
157 #
158 # Print a submodule configuration setting
159 #
160 # $1 = submodule name
161 # $2 = option name
162 # $3 = default value
163 #
164 # Checks in the usual git-config places first (for overrides),
165 # otherwise it falls back on .gitmodules.  This allows you to
166 # distribute project-wide defaults in .gitmodules, while still
167 # customizing individual repositories if necessary.  If the option is
168 # not in .gitmodules either, print a default value.
169 #
170 get_submodule_config () {
171         name="$1"
172         option="$2"
173         default="$3"
174         value=$(git config submodule."$name"."$option")
175         if test -z "$value"
176         then
177                 value=$(git config -f .gitmodules submodule."$name"."$option")
178         fi
179         printf '%s' "${value:-$default}"
180 }
181
182
183 #
184 # Map submodule path to submodule name
185 #
186 # $1 = path
187 #
188 module_name()
189 {
190         # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
191         sm_path="$1"
192         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
193         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
194                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
195         test -z "$name" &&
196         die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$sm_path'")"
197         echo "$name"
198 }
199
200 #
201 # Clone a submodule
202 #
203 # Prior to calling, cmd_update checks that a possibly existing
204 # path is not a git repository.
205 # Likewise, cmd_add checks that path does not exist at all,
206 # since it is the location of a new submodule.
207 #
208 module_clone()
209 {
210         sm_path=$1
211         name=$2
212         url=$3
213         reference="$4"
214         quiet=
215         if test -n "$GIT_QUIET"
216         then
217                 quiet=-q
218         fi
219
220         gitdir=
221         gitdir_base=
222         base_name=$(dirname "$name")
223
224         gitdir=$(git rev-parse --git-dir)
225         gitdir_base="$gitdir/modules/$base_name"
226         gitdir="$gitdir/modules/$name"
227
228         if test -d "$gitdir"
229         then
230                 mkdir -p "$sm_path"
231                 rm -f "$gitdir/index"
232         else
233                 mkdir -p "$gitdir_base"
234                 (
235                         clear_local_git_env
236                         git clone $quiet -n ${reference:+"$reference"} \
237                                 --separate-git-dir "$gitdir" "$url" "$sm_path"
238                 ) ||
239                 die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
240         fi
241
242         # We already are at the root of the work tree but cd_to_toplevel will
243         # resolve any symlinks that might be present in $PWD
244         a=$(cd_to_toplevel && cd "$gitdir" && pwd)/
245         b=$(cd_to_toplevel && cd "$sm_path" && pwd)/
246         # normalize Windows-style absolute paths to POSIX-style absolute paths
247         case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
248         case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
249         # Remove all common leading directories after a sanity check
250         if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
251                 die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
252         fi
253         while test "${a%%/*}" = "${b%%/*}"
254         do
255                 a=${a#*/}
256                 b=${b#*/}
257         done
258         # Now chop off the trailing '/'s that were added in the beginning
259         a=${a%/}
260         b=${b%/}
261
262         # Turn each leading "*/" component into "../"
263         rel=$(echo $b | sed -e 's|[^/][^/]*|..|g')
264         echo "gitdir: $rel/$a" >"$sm_path/.git"
265
266         rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
267         (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
268 }
269
270 isnumber()
271 {
272         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
273 }
274
275 #
276 # Add a new submodule to the working tree, .gitmodules and the index
277 #
278 # $@ = repo path
279 #
280 # optional branch is stored in global branch variable
281 #
282 cmd_add()
283 {
284         # parse $args after "submodule ... add".
285         while test $# -ne 0
286         do
287                 case "$1" in
288                 -b | --branch)
289                         case "$2" in '') usage ;; esac
290                         branch=$2
291                         shift
292                         ;;
293                 -f | --force)
294                         force=$1
295                         ;;
296                 -q|--quiet)
297                         GIT_QUIET=1
298                         ;;
299                 --reference)
300                         case "$2" in '') usage ;; esac
301                         reference="--reference=$2"
302                         shift
303                         ;;
304                 --reference=*)
305                         reference="$1"
306                         ;;
307                 --name)
308                         case "$2" in '') usage ;; esac
309                         custom_name=$2
310                         shift
311                         ;;
312                 --)
313                         shift
314                         break
315                         ;;
316                 -*)
317                         usage
318                         ;;
319                 *)
320                         break
321                         ;;
322                 esac
323                 shift
324         done
325
326         repo=$1
327         sm_path=$2
328
329         if test -z "$sm_path"; then
330                 sm_path=$(echo "$repo" |
331                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
332         fi
333
334         if test -z "$repo" -o -z "$sm_path"; then
335                 usage
336         fi
337
338         # assure repo is absolute or relative to parent
339         case "$repo" in
340         ./*|../*)
341                 # dereference source url relative to parent's url
342                 realrepo=$(resolve_relative_url "$repo") || exit
343                 ;;
344         *:*|/*)
345                 # absolute url
346                 realrepo=$repo
347                 ;;
348         *)
349                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
350         ;;
351         esac
352
353         # normalize path:
354         # multiple //; leading ./; /./; /../; trailing /
355         sm_path=$(printf '%s/\n' "$sm_path" |
356                 sed -e '
357                         s|//*|/|g
358                         s|^\(\./\)*||
359                         s|/\./|/|g
360                         :start
361                         s|\([^/]*\)/\.\./||
362                         tstart
363                         s|/*$||
364                 ')
365         git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
366         die "$(eval_gettext "'\$sm_path' already exists in the index")"
367
368         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
369         then
370                 eval_gettextln "The following path is ignored by one of your .gitignore files:
371 \$sm_path
372 Use -f if you really want to add it." >&2
373                 exit 1
374         fi
375
376         if test -n "$custom_name"
377         then
378                 sm_name="$custom_name"
379         else
380                 sm_name="$sm_path"
381         fi
382
383         # perhaps the path exists and is already a git repo, else clone it
384         if test -e "$sm_path"
385         then
386                 if test -d "$sm_path"/.git -o -f "$sm_path"/.git
387                 then
388                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
389                 else
390                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
391                 fi
392
393         else
394                 if test -d ".git/modules/$sm_name"
395                 then
396                         if test -z "$force"
397                         then
398                                 echo >&2 "$(eval_gettext "A git directory for '\$sm_name' is found locally with remote(s):")"
399                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
400                                 echo >&2 "$(eval_gettext "If you want to reuse this local git directory instead of cloning again from")"
401                                 echo >&2 "  $realrepo"
402                                 echo >&2 "$(eval_gettext "use the '--force' option. If the local git directory is not the correct repo")"
403                                 die "$(eval_gettext "or you are unsure what this means choose another name with the '--name' option.")"
404                         else
405                                 echo "$(eval_gettext "Reactivating local git directory for submodule '\$sm_name'.")"
406                         fi
407                 fi
408                 module_clone "$sm_path" "$sm_name" "$realrepo" "$reference" || exit
409                 (
410                         clear_local_git_env
411                         cd "$sm_path" &&
412                         # ash fails to wordsplit ${branch:+-b "$branch"...}
413                         case "$branch" in
414                         '') git checkout -f -q ;;
415                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
416                         esac
417                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
418         fi
419         git config submodule."$sm_name".url "$realrepo"
420
421         git add $force "$sm_path" ||
422         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
423
424         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
425         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
426         if test -n "$branch"
427         then
428                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
429         fi &&
430         git add --force .gitmodules ||
431         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
432 }
433
434 #
435 # Execute an arbitrary command sequence in each checked out
436 # submodule
437 #
438 # $@ = command to execute
439 #
440 cmd_foreach()
441 {
442         # parse $args after "submodule ... foreach".
443         while test $# -ne 0
444         do
445                 case "$1" in
446                 -q|--quiet)
447                         GIT_QUIET=1
448                         ;;
449                 --recursive)
450                         recursive=1
451                         ;;
452                 -*)
453                         usage
454                         ;;
455                 *)
456                         break
457                         ;;
458                 esac
459                 shift
460         done
461
462         toplevel=$(pwd)
463
464         # dup stdin so that it can be restored when running the external
465         # command in the subshell (and a recursive call to this function)
466         exec 3<&0
467
468         module_list |
469         while read mode sha1 stage sm_path
470         do
471                 die_if_unmatched "$mode"
472                 if test -e "$sm_path"/.git
473                 then
474                         say "$(eval_gettext "Entering '\$prefix\$sm_path'")"
475                         name=$(module_name "$sm_path")
476                         (
477                                 prefix="$prefix$sm_path/"
478                                 clear_local_git_env
479                                 # we make $path available to scripts ...
480                                 path=$sm_path
481                                 cd "$sm_path" &&
482                                 eval "$@" &&
483                                 if test -n "$recursive"
484                                 then
485                                         cmd_foreach "--recursive" "$@"
486                                 fi
487                         ) <&3 3<&- ||
488                         die "$(eval_gettext "Stopping at '\$sm_path'; script returned non-zero status.")"
489                 fi
490         done
491 }
492
493 #
494 # Register submodules in .git/config
495 #
496 # $@ = requested paths (default to all)
497 #
498 cmd_init()
499 {
500         # parse $args after "submodule ... init".
501         while test $# -ne 0
502         do
503                 case "$1" in
504                 -q|--quiet)
505                         GIT_QUIET=1
506                         ;;
507                 --)
508                         shift
509                         break
510                         ;;
511                 -*)
512                         usage
513                         ;;
514                 *)
515                         break
516                         ;;
517                 esac
518                 shift
519         done
520
521         module_list "$@" |
522         while read mode sha1 stage sm_path
523         do
524                 die_if_unmatched "$mode"
525                 name=$(module_name "$sm_path") || exit
526
527                 # Copy url setting when it is not set yet
528                 if test -z "$(git config "submodule.$name.url")"
529                 then
530                         url=$(git config -f .gitmodules submodule."$name".url)
531                         test -z "$url" &&
532                         die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"
533
534                         # Possibly a url relative to parent
535                         case "$url" in
536                         ./*|../*)
537                                 url=$(resolve_relative_url "$url") || exit
538                                 ;;
539                         esac
540                         git config submodule."$name".url "$url" ||
541                         die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"
542
543                         say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
544                 fi
545
546                 # Copy "update" setting when it is not set yet
547                 upd="$(git config -f .gitmodules submodule."$name".update)"
548                 test -z "$upd" ||
549                 test -n "$(git config submodule."$name".update)" ||
550                 git config submodule."$name".update "$upd" ||
551                 die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
552         done
553 }
554
555 #
556 # Unregister submodules from .git/config and remove their work tree
557 #
558 # $@ = requested paths (use '.' to deinit all submodules)
559 #
560 cmd_deinit()
561 {
562         # parse $args after "submodule ... deinit".
563         while test $# -ne 0
564         do
565                 case "$1" in
566                 -f|--force)
567                         force=$1
568                         ;;
569                 -q|--quiet)
570                         GIT_QUIET=1
571                         ;;
572                 --)
573                         shift
574                         break
575                         ;;
576                 -*)
577                         usage
578                         ;;
579                 *)
580                         break
581                         ;;
582                 esac
583                 shift
584         done
585
586         if test $# = 0
587         then
588                 die "$(eval_gettext "Use '.' if you really want to deinitialize all submodules")"
589         fi
590
591         module_list "$@" |
592         while read mode sha1 stage sm_path
593         do
594                 die_if_unmatched "$mode"
595                 name=$(module_name "$sm_path") || exit
596
597                 # Remove the submodule work tree (unless the user already did it)
598                 if test -d "$sm_path"
599                 then
600                         # Protect submodules containing a .git directory
601                         if test -d "$sm_path/.git"
602                         then
603                                 echo >&2 "$(eval_gettext "Submodule work tree '\$sm_path' contains a .git directory")"
604                                 die "$(eval_gettext "(use 'rm -rf' if you really want to remove it including all of its history)")"
605                         fi
606
607                         if test -z "$force"
608                         then
609                                 git rm -qn "$sm_path" ||
610                                 die "$(eval_gettext "Submodule work tree '\$sm_path' contains local modifications; use '-f' to discard them")"
611                         fi
612                         rm -rf "$sm_path" &&
613                         say "$(eval_gettext "Cleared directory '\$sm_path'")" ||
614                         say "$(eval_gettext "Could not remove submodule work tree '\$sm_path'")"
615                 fi
616
617                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$sm_path'")"
618
619                 # Remove the .git/config entries (unless the user already did it)
620                 if test -n "$(git config --get-regexp submodule."$name\.")"
621                 then
622                         # Remove the whole section so we have a clean state when
623                         # the user later decides to init this submodule again
624                         url=$(git config submodule."$name".url)
625                         git config --remove-section submodule."$name" 2>/dev/null &&
626                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$sm_path'")"
627                 fi
628         done
629 }
630
631 #
632 # Update each submodule path to correct revision, using clone and checkout as needed
633 #
634 # $@ = requested paths (default to all)
635 #
636 cmd_update()
637 {
638         # parse $args after "submodule ... update".
639         orig_flags=
640         while test $# -ne 0
641         do
642                 case "$1" in
643                 -q|--quiet)
644                         GIT_QUIET=1
645                         ;;
646                 -i|--init)
647                         init=1
648                         ;;
649                 --remote)
650                         remote=1
651                         ;;
652                 -N|--no-fetch)
653                         nofetch=1
654                         ;;
655                 -f|--force)
656                         force=$1
657                         ;;
658                 -r|--rebase)
659                         update="rebase"
660                         ;;
661                 --reference)
662                         case "$2" in '') usage ;; esac
663                         reference="--reference=$2"
664                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
665                         shift
666                         ;;
667                 --reference=*)
668                         reference="$1"
669                         ;;
670                 -m|--merge)
671                         update="merge"
672                         ;;
673                 --recursive)
674                         recursive=1
675                         ;;
676                 --checkout)
677                         update="checkout"
678                         ;;
679                 --)
680                         shift
681                         break
682                         ;;
683                 -*)
684                         usage
685                         ;;
686                 *)
687                         break
688                         ;;
689                 esac
690                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
691                 shift
692         done
693
694         if test -n "$init"
695         then
696                 cmd_init "--" "$@" || return
697         fi
698
699         cloned_modules=
700         module_list "$@" | {
701         err=
702         while read mode sha1 stage sm_path
703         do
704                 die_if_unmatched "$mode"
705                 if test "$stage" = U
706                 then
707                         echo >&2 "Skipping unmerged submodule $prefix$sm_path"
708                         continue
709                 fi
710                 name=$(module_name "$sm_path") || exit
711                 url=$(git config submodule."$name".url)
712                 branch=$(get_submodule_config "$name" branch master)
713                 if ! test -z "$update"
714                 then
715                         update_module=$update
716                 else
717                         update_module=$(git config submodule."$name".update)
718                 fi
719
720                 if test "$update_module" = "none"
721                 then
722                         echo "Skipping submodule '$prefix$sm_path'"
723                         continue
724                 fi
725
726                 if test -z "$url"
727                 then
728                         # Only mention uninitialized submodules when its
729                         # path have been specified
730                         test "$#" != "0" &&
731                         say "$(eval_gettext "Submodule path '\$prefix\$sm_path' not initialized
732 Maybe you want to use 'update --init'?")"
733                         continue
734                 fi
735
736                 if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
737                 then
738                         module_clone "$sm_path" "$name" "$url" "$reference" || exit
739                         cloned_modules="$cloned_modules;$name"
740                         subsha1=
741                 else
742                         subsha1=$(clear_local_git_env; cd "$sm_path" &&
743                                 git rev-parse --verify HEAD) ||
744                         die "$(eval_gettext "Unable to find current revision in submodule path '\$prefix\$sm_path'")"
745                 fi
746
747                 if test -n "$remote"
748                 then
749                         if test -z "$nofetch"
750                         then
751                                 # Fetch remote before determining tracking $sha1
752                                 (clear_local_git_env; cd "$sm_path" && git-fetch) ||
753                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
754                         fi
755                         remote_name=$(clear_local_git_env; cd "$sm_path" && get_default_remote)
756                         sha1=$(clear_local_git_env; cd "$sm_path" &&
757                                 git rev-parse --verify "${remote_name}/${branch}") ||
758                         die "$(eval_gettext "Unable to find current ${remote_name}/${branch} revision in submodule path '\$sm_path'")"
759                 fi
760
761                 if test "$subsha1" != "$sha1" -o -n "$force"
762                 then
763                         subforce=$force
764                         # If we don't already have a -f flag and the submodule has never been checked out
765                         if test -z "$subsha1" -a -z "$force"
766                         then
767                                 subforce="-f"
768                         fi
769
770                         if test -z "$nofetch"
771                         then
772                                 # Run fetch only if $sha1 isn't present or it
773                                 # is not reachable from a ref.
774                                 (clear_local_git_env; cd "$sm_path" &&
775                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
776                                          test -z "$rev") || git-fetch)) ||
777                                 die "$(eval_gettext "Unable to fetch in submodule path '\$prefix\$sm_path'")"
778                         fi
779
780                         # Is this something we just cloned?
781                         case ";$cloned_modules;" in
782                         *";$name;"*)
783                                 # then there is no local change to integrate
784                                 update_module= ;;
785                         esac
786
787                         must_die_on_failure=
788                         case "$update_module" in
789                         rebase)
790                                 command="git rebase"
791                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$prefix\$sm_path'")"
792                                 say_msg="$(eval_gettext "Submodule path '\$prefix\$sm_path': rebased into '\$sha1'")"
793                                 must_die_on_failure=yes
794                                 ;;
795                         merge)
796                                 command="git merge"
797                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$prefix\$sm_path'")"
798                                 say_msg="$(eval_gettext "Submodule path '\$prefix\$sm_path': merged in '\$sha1'")"
799                                 must_die_on_failure=yes
800                                 ;;
801                         *)
802                                 command="git checkout $subforce -q"
803                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$prefix\$sm_path'")"
804                                 say_msg="$(eval_gettext "Submodule path '\$prefix\$sm_path': checked out '\$sha1'")"
805                                 ;;
806                         esac
807
808                         if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
809                         then
810                                 say "$say_msg"
811                         elif test -n "$must_die_on_failure"
812                         then
813                                 die_with_status 2 "$die_msg"
814                         else
815                                 err="${err};$die_msg"
816                                 continue
817                         fi
818                 fi
819
820                 if test -n "$recursive"
821                 then
822                         (
823                                 prefix="$prefix$sm_path/"
824                                 clear_local_git_env
825                                 cd "$sm_path" &&
826                                 eval cmd_update "$orig_flags"
827                         )
828                         res=$?
829                         if test $res -gt 0
830                         then
831                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$prefix\$sm_path'")"
832                                 if test $res -eq 1
833                                 then
834                                         err="${err};$die_msg"
835                                         continue
836                                 else
837                                         die_with_status $res "$die_msg"
838                                 fi
839                         fi
840                 fi
841         done
842
843         if test -n "$err"
844         then
845                 OIFS=$IFS
846                 IFS=';'
847                 for e in $err
848                 do
849                         if test -n "$e"
850                         then
851                                 echo >&2 "$e"
852                         fi
853                 done
854                 IFS=$OIFS
855                 exit 1
856         fi
857         }
858 }
859
860 set_name_rev () {
861         revname=$( (
862                 clear_local_git_env
863                 cd "$1" && {
864                         git describe "$2" 2>/dev/null ||
865                         git describe --tags "$2" 2>/dev/null ||
866                         git describe --contains "$2" 2>/dev/null ||
867                         git describe --all --always "$2"
868                 }
869         ) )
870         test -z "$revname" || revname=" ($revname)"
871 }
872 #
873 # Show commit summary for submodules in index or working tree
874 #
875 # If '--cached' is given, show summary between index and given commit,
876 # or between working tree and given commit
877 #
878 # $@ = [commit (default 'HEAD'),] requested paths (default all)
879 #
880 cmd_summary() {
881         summary_limit=-1
882         for_status=
883         diff_cmd=diff-index
884
885         # parse $args after "submodule ... summary".
886         while test $# -ne 0
887         do
888                 case "$1" in
889                 --cached)
890                         cached="$1"
891                         ;;
892                 --files)
893                         files="$1"
894                         ;;
895                 --for-status)
896                         for_status="$1"
897                         ;;
898                 -n|--summary-limit)
899                         summary_limit="$2"
900                         isnumber "$summary_limit" || usage
901                         shift
902                         ;;
903                 --summary-limit=*)
904                         summary_limit="${1#--summary-limit=}"
905                         isnumber "$summary_limit" || usage
906                         ;;
907                 --)
908                         shift
909                         break
910                         ;;
911                 -*)
912                         usage
913                         ;;
914                 *)
915                         break
916                         ;;
917                 esac
918                 shift
919         done
920
921         test $summary_limit = 0 && return
922
923         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
924         then
925                 head=$rev
926                 test $# = 0 || shift
927         elif test -z "$1" -o "$1" = "HEAD"
928         then
929                 # before the first commit: compare with an empty tree
930                 head=$(git hash-object -w -t tree --stdin </dev/null)
931                 test -z "$1" || shift
932         else
933                 head="HEAD"
934         fi
935
936         if [ -n "$files" ]
937         then
938                 test -n "$cached" &&
939                 die "$(gettext "The --cached option cannot be used with the --files option")"
940                 diff_cmd=diff-files
941                 head=
942         fi
943
944         cd_to_toplevel
945         # Get modified modules cared by user
946         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
947                 sane_egrep '^:([0-7]* )?160000' |
948                 while read mod_src mod_dst sha1_src sha1_dst status name
949                 do
950                         # Always show modules deleted or type-changed (blob<->module)
951                         test $status = D -o $status = T && echo "$name" && continue
952                         # Also show added or modified modules which are checked out
953                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
954                         echo "$name"
955                 done
956         )
957
958         test -z "$modules" && return
959
960         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
961         sane_egrep '^:([0-7]* )?160000' |
962         cut -c2- |
963         while read mod_src mod_dst sha1_src sha1_dst status name
964         do
965                 if test -z "$cached" &&
966                         test $sha1_dst = 0000000000000000000000000000000000000000
967                 then
968                         case "$mod_dst" in
969                         160000)
970                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
971                                 ;;
972                         100644 | 100755 | 120000)
973                                 sha1_dst=$(git hash-object $name)
974                                 ;;
975                         000000)
976                                 ;; # removed
977                         *)
978                                 # unexpected type
979                                 eval_gettextln "unexpected mode \$mod_dst" >&2
980                                 continue ;;
981                         esac
982                 fi
983                 missing_src=
984                 missing_dst=
985
986                 test $mod_src = 160000 &&
987                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
988                 missing_src=t
989
990                 test $mod_dst = 160000 &&
991                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
992                 missing_dst=t
993
994                 total_commits=
995                 case "$missing_src,$missing_dst" in
996                 t,)
997                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
998                         ;;
999                 ,t)
1000                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
1001                         ;;
1002                 t,t)
1003                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
1004                         ;;
1005                 *)
1006                         errmsg=
1007                         total_commits=$(
1008                         if test $mod_src = 160000 -a $mod_dst = 160000
1009                         then
1010                                 range="$sha1_src...$sha1_dst"
1011                         elif test $mod_src = 160000
1012                         then
1013                                 range=$sha1_src
1014                         else
1015                                 range=$sha1_dst
1016                         fi
1017                         GIT_DIR="$name/.git" \
1018                         git rev-list --first-parent $range -- | wc -l
1019                         )
1020                         total_commits=" ($(($total_commits + 0)))"
1021                         ;;
1022                 esac
1023
1024                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
1025                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
1026                 if test $status = T
1027                 then
1028                         blob="$(gettext "blob")"
1029                         submodule="$(gettext "submodule")"
1030                         if test $mod_dst = 160000
1031                         then
1032                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
1033                         else
1034                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
1035                         fi
1036                 else
1037                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
1038                 fi
1039                 if test -n "$errmsg"
1040                 then
1041                         # Don't give error msg for modification whose dst is not submodule
1042                         # i.e. deleted or changed to blob
1043                         test $mod_dst = 160000 && echo "$errmsg"
1044                 else
1045                         if test $mod_src = 160000 -a $mod_dst = 160000
1046                         then
1047                                 limit=
1048                                 test $summary_limit -gt 0 && limit="-$summary_limit"
1049                                 GIT_DIR="$name/.git" \
1050                                 git log $limit --pretty='format:  %m %s' \
1051                                 --first-parent $sha1_src...$sha1_dst
1052                         elif test $mod_dst = 160000
1053                         then
1054                                 GIT_DIR="$name/.git" \
1055                                 git log --pretty='format:  > %s' -1 $sha1_dst
1056                         else
1057                                 GIT_DIR="$name/.git" \
1058                                 git log --pretty='format:  < %s' -1 $sha1_src
1059                         fi
1060                         echo
1061                 fi
1062                 echo
1063         done |
1064         if test -n "$for_status"; then
1065                 if [ -n "$files" ]; then
1066                         gettextln "Submodules changed but not updated:" | git stripspace -c
1067                 else
1068                         gettextln "Submodule changes to be committed:" | git stripspace -c
1069                 fi
1070                 printf "\n" | git stripspace -c
1071                 git stripspace -c
1072         else
1073                 cat
1074         fi
1075 }
1076 #
1077 # List all submodules, prefixed with:
1078 #  - submodule not initialized
1079 #  + different revision checked out
1080 #
1081 # If --cached was specified the revision in the index will be printed
1082 # instead of the currently checked out revision.
1083 #
1084 # $@ = requested paths (default to all)
1085 #
1086 cmd_status()
1087 {
1088         # parse $args after "submodule ... status".
1089         while test $# -ne 0
1090         do
1091                 case "$1" in
1092                 -q|--quiet)
1093                         GIT_QUIET=1
1094                         ;;
1095                 --cached)
1096                         cached=1
1097                         ;;
1098                 --recursive)
1099                         recursive=1
1100                         ;;
1101                 --)
1102                         shift
1103                         break
1104                         ;;
1105                 -*)
1106                         usage
1107                         ;;
1108                 *)
1109                         break
1110                         ;;
1111                 esac
1112                 shift
1113         done
1114
1115         module_list "$@" |
1116         while read mode sha1 stage sm_path
1117         do
1118                 die_if_unmatched "$mode"
1119                 name=$(module_name "$sm_path") || exit
1120                 url=$(git config submodule."$name".url)
1121                 displaypath="$prefix$sm_path"
1122                 if test "$stage" = U
1123                 then
1124                         say "U$sha1 $displaypath"
1125                         continue
1126                 fi
1127                 if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
1128                 then
1129                         say "-$sha1 $displaypath"
1130                         continue;
1131                 fi
1132                 set_name_rev "$sm_path" "$sha1"
1133                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1134                 then
1135                         say " $sha1 $displaypath$revname"
1136                 else
1137                         if test -z "$cached"
1138                         then
1139                                 sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
1140                                 set_name_rev "$sm_path" "$sha1"
1141                         fi
1142                         say "+$sha1 $displaypath$revname"
1143                 fi
1144
1145                 if test -n "$recursive"
1146                 then
1147                         (
1148                                 prefix="$displaypath/"
1149                                 clear_local_git_env
1150                                 cd "$sm_path" &&
1151                                 eval cmd_status
1152                         ) ||
1153                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1154                 fi
1155         done
1156 }
1157 #
1158 # Sync remote urls for submodules
1159 # This makes the value for remote.$remote.url match the value
1160 # specified in .gitmodules.
1161 #
1162 cmd_sync()
1163 {
1164         while test $# -ne 0
1165         do
1166                 case "$1" in
1167                 -q|--quiet)
1168                         GIT_QUIET=1
1169                         shift
1170                         ;;
1171                 --recursive)
1172                         recursive=1
1173                         shift
1174                         ;;
1175                 --)
1176                         shift
1177                         break
1178                         ;;
1179                 -*)
1180                         usage
1181                         ;;
1182                 *)
1183                         break
1184                         ;;
1185                 esac
1186         done
1187         cd_to_toplevel
1188         module_list "$@" |
1189         while read mode sha1 stage sm_path
1190         do
1191                 die_if_unmatched "$mode"
1192                 name=$(module_name "$sm_path")
1193                 url=$(git config -f .gitmodules --get submodule."$name".url)
1194
1195                 # Possibly a url relative to parent
1196                 case "$url" in
1197                 ./*|../*)
1198                         # rewrite foo/bar as ../.. to find path from
1199                         # submodule work tree to superproject work tree
1200                         up_path="$(echo "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1201                         # guarantee a trailing /
1202                         up_path=${up_path%/}/ &&
1203                         # path from submodule work tree to submodule origin repo
1204                         sub_origin_url=$(resolve_relative_url "$url" "$up_path") &&
1205                         # path from superproject work tree to submodule origin repo
1206                         super_config_url=$(resolve_relative_url "$url") || exit
1207                         ;;
1208                 *)
1209                         sub_origin_url="$url"
1210                         super_config_url="$url"
1211                         ;;
1212                 esac
1213
1214                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
1215                 then
1216                         say "$(eval_gettext "Synchronizing submodule url for '\$prefix\$sm_path'")"
1217                         git config submodule."$name".url "$super_config_url"
1218
1219                         if test -e "$sm_path"/.git
1220                         then
1221                         (
1222                                 clear_local_git_env
1223                                 cd "$sm_path"
1224                                 remote=$(get_default_remote)
1225                                 git config remote."$remote".url "$sub_origin_url"
1226
1227                                 if test -n "$recursive"
1228                                 then
1229                                         prefix="$prefix$sm_path/"
1230                                         eval cmd_sync
1231                                 fi
1232                         )
1233                         fi
1234                 fi
1235         done
1236 }
1237
1238 # This loop parses the command line arguments to find the
1239 # subcommand name to dispatch.  Parsing of the subcommand specific
1240 # options are primarily done by the subcommand implementations.
1241 # Subcommand specific options such as --branch and --cached are
1242 # parsed here as well, for backward compatibility.
1243
1244 while test $# != 0 && test -z "$command"
1245 do
1246         case "$1" in
1247         add | foreach | init | deinit | update | status | summary | sync)
1248                 command=$1
1249                 ;;
1250         -q|--quiet)
1251                 GIT_QUIET=1
1252                 ;;
1253         -b|--branch)
1254                 case "$2" in
1255                 '')
1256                         usage
1257                         ;;
1258                 esac
1259                 branch="$2"; shift
1260                 ;;
1261         --cached)
1262                 cached="$1"
1263                 ;;
1264         --)
1265                 break
1266                 ;;
1267         -*)
1268                 usage
1269                 ;;
1270         *)
1271                 break
1272                 ;;
1273         esac
1274         shift
1275 done
1276
1277 # No command word defaults to "status"
1278 if test -z "$command"
1279 then
1280     if test $# = 0
1281     then
1282         command=status
1283     else
1284         usage
1285     fi
1286 fi
1287
1288 # "-b branch" is accepted only by "add"
1289 if test -n "$branch" && test "$command" != add
1290 then
1291         usage
1292 fi
1293
1294 # "--cached" is accepted only by "status" and "summary"
1295 if test -n "$cached" && test "$command" != status -a "$command" != summary
1296 then
1297         usage
1298 fi
1299
1300 "cmd_$command" "$@"