criss cross rename failure workaround
[git/dscho.git] / git-submodule.sh
blob3a13397e057edf88d2c810490ec3d7d755be2009
1 #!/bin/sh
3 # git-submodules.sh: add, init, update or list git submodules
5 # Copyright (c) 2007 Lars Hjemli
7 dashless=$(basename "$0" | sed -e 's/-/ /')
8 USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
9 or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
10 or: $dashless [--quiet] init [--] [<path>...]
11 or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
12 or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
13 or: $dashless [--quiet] foreach [--recursive] <command>
14 or: $dashless [--quiet] sync [--] [<path>...]"
15 OPTIONS_SPEC=
16 . git-sh-setup
17 . git-parse-remote
18 require_work_tree
20 command=
21 branch=
22 force=
23 reference=
24 cached=
25 recursive=
26 init=
27 files=
28 nofetch=
29 update=
30 prefix=
32 # Resolve relative url by appending to parent's url
33 resolve_relative_url ()
35 remote=$(get_default_remote)
36 remoteurl=$(git config "remote.$remote.url") ||
37 die "remote ($remote) does not have a url defined in .git/config"
38 url="$1"
39 remoteurl=${remoteurl%/}
40 sep=/
41 while test -n "$url"
43 case "$url" in
44 ../*)
45 url="${url#../}"
46 case "$remoteurl" in
47 */*)
48 remoteurl="${remoteurl%/*}"
50 *:*)
51 remoteurl="${remoteurl%:*}"
52 sep=:
55 die "cannot strip one component off url '$remoteurl'"
57 esac
59 ./*)
60 url="${url#./}"
63 break;;
64 esac
65 done
66 echo "$remoteurl$sep${url%/}"
70 # Get submodule info for registered submodules
71 # $@ = path to limit submodule list
73 module_list()
75 git ls-files --error-unmatch --stage -- "$@" | sane_grep '^160000 '
79 # Map submodule path to submodule name
81 # $1 = path
83 module_name()
85 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
86 re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
87 name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
88 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
89 test -z "$name" &&
90 die "No submodule mapping found in .gitmodules for path '$path'"
91 echo "$name"
95 # Clone a submodule
97 # Prior to calling, cmd_update checks that a possibly existing
98 # path is not a git repository.
99 # Likewise, cmd_add checks that path does not exist at all,
100 # since it is the location of a new submodule.
102 module_clone()
104 path=$1
105 url=$2
106 reference="$3"
108 if test -n "$reference"
109 then
110 git-clone "$reference" -n "$url" "$path"
111 else
112 git-clone -n "$url" "$path"
113 fi ||
114 die "Clone of '$url' into submodule path '$path' failed"
118 # Add a new submodule to the working tree, .gitmodules and the index
120 # $@ = repo path
122 # optional branch is stored in global branch variable
124 cmd_add()
126 # parse $args after "submodule ... add".
127 while test $# -ne 0
129 case "$1" in
130 -b | --branch)
131 case "$2" in '') usage ;; esac
132 branch=$2
133 shift
135 -f | --force)
136 force=$1
138 -q|--quiet)
139 GIT_QUIET=1
141 --reference)
142 case "$2" in '') usage ;; esac
143 reference="--reference=$2"
144 shift
146 --reference=*)
147 reference="$1"
148 shift
151 shift
152 break
155 usage
158 break
160 esac
161 shift
162 done
164 repo=$1
165 path=$2
167 if test -z "$path"; then
168 path=$(echo "$repo" |
169 sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
172 if test -z "$repo" -o -z "$path"; then
173 usage
176 # assure repo is absolute or relative to parent
177 case "$repo" in
178 ./*|../*)
179 # dereference source url relative to parent's url
180 realrepo=$(resolve_relative_url "$repo") || exit
182 *:*|/*)
183 # absolute url
184 realrepo=$repo
187 die "repo URL: '$repo' must be absolute or begin with ./|../"
189 esac
191 # normalize path:
192 # multiple //; leading ./; /./; /../; trailing /
193 path=$(printf '%s/\n' "$path" |
194 sed -e '
195 s|//*|/|g
196 s|^\(\./\)*||
197 s|/\./|/|g
198 :start
199 s|\([^/]*\)/\.\./||
200 tstart
201 s|/*$||
203 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
204 die "'$path' already exists in the index"
206 if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
207 then
208 echo >&2 "The following path is ignored by one of your .gitignore files:" &&
209 echo >&2 $path &&
210 echo >&2 "Use -f if you really want to add it."
211 exit 1
214 # perhaps the path exists and is already a git repo, else clone it
215 if test -e "$path"
216 then
217 if test -d "$path"/.git -o -f "$path"/.git
218 then
219 echo "Adding existing repo at '$path' to the index"
220 else
221 die "'$path' already exists and is not a valid git repo"
224 case "$repo" in
225 ./*|../*)
226 url=$(resolve_relative_url "$repo") || exit
229 url="$repo"
231 esac
232 git config submodule."$path".url "$url"
233 else
235 module_clone "$path" "$realrepo" "$reference" || exit
237 clear_local_git_env
238 cd "$path" &&
239 # ash fails to wordsplit ${branch:+-b "$branch"...}
240 case "$branch" in
241 '') git checkout -f -q ;;
242 ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
243 esac
244 ) || die "Unable to checkout submodule '$path'"
247 git add $force "$path" ||
248 die "Failed to add submodule '$path'"
250 git config -f .gitmodules submodule."$path".path "$path" &&
251 git config -f .gitmodules submodule."$path".url "$repo" &&
252 git add --force .gitmodules ||
253 die "Failed to register submodule '$path'"
257 # Execute an arbitrary command sequence in each checked out
258 # submodule
260 # $@ = command to execute
262 cmd_foreach()
264 # parse $args after "submodule ... foreach".
265 while test $# -ne 0
267 case "$1" in
268 -q|--quiet)
269 GIT_QUIET=1
271 --recursive)
272 recursive=1
275 usage
278 break
280 esac
281 shift
282 done
284 toplevel=$(pwd)
286 module_list |
287 while read mode sha1 stage path
289 if test -e "$path"/.git
290 then
291 say "Entering '$prefix$path'"
292 name=$(module_name "$path")
294 prefix="$prefix$path/"
295 clear_local_git_env
296 cd "$path" &&
297 eval "$@" &&
298 if test -n "$recursive"
299 then
300 cmd_foreach "--recursive" "$@"
302 ) ||
303 die "Stopping at '$path'; script returned non-zero status."
305 done
309 # Register submodules in .git/config
311 # $@ = requested paths (default to all)
313 cmd_init()
315 # parse $args after "submodule ... init".
316 while test $# -ne 0
318 case "$1" in
319 -q|--quiet)
320 GIT_QUIET=1
323 shift
324 break
327 usage
330 break
332 esac
333 shift
334 done
336 module_list "$@" |
337 while read mode sha1 stage path
339 # Skip already registered paths
340 name=$(module_name "$path") || exit
341 url=$(git config submodule."$name".url)
342 test -z "$url" || continue
344 url=$(git config -f .gitmodules submodule."$name".url)
345 test -z "$url" &&
346 die "No url found for submodule path '$path' in .gitmodules"
348 # Possibly a url relative to parent
349 case "$url" in
350 ./*|../*)
351 url=$(resolve_relative_url "$url") || exit
353 esac
355 git config submodule."$name".url "$url" ||
356 die "Failed to register url for submodule path '$path'"
358 upd="$(git config -f .gitmodules submodule."$name".update)"
359 test -z "$upd" ||
360 git config submodule."$name".update "$upd" ||
361 die "Failed to register update mode for submodule path '$path'"
363 say "Submodule '$name' ($url) registered for path '$path'"
364 done
368 # Update each submodule path to correct revision, using clone and checkout as needed
370 # $@ = requested paths (default to all)
372 cmd_update()
374 # parse $args after "submodule ... update".
375 orig_flags=
376 while test $# -ne 0
378 case "$1" in
379 -q|--quiet)
380 GIT_QUIET=1
382 -i|--init)
383 init=1
385 -N|--no-fetch)
386 nofetch=1
388 -r|--rebase)
389 update="rebase"
391 --reference)
392 case "$2" in '') usage ;; esac
393 reference="--reference=$2"
394 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
395 shift
397 --reference=*)
398 reference="$1"
400 -m|--merge)
401 update="merge"
403 --recursive)
404 recursive=1
407 shift
408 break
411 usage
414 break
416 esac
417 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
418 shift
419 done
421 if test -n "$init"
422 then
423 cmd_init "--" "$@" || return
426 cloned_modules=
427 module_list "$@" |
428 while read mode sha1 stage path
430 name=$(module_name "$path") || exit
431 url=$(git config submodule."$name".url)
432 update_module=$(git config submodule."$name".update)
433 if test -z "$url"
434 then
435 # Only mention uninitialized submodules when its
436 # path have been specified
437 test "$#" != "0" &&
438 say "Submodule path '$path' not initialized" &&
439 say "Maybe you want to use 'update --init'?"
440 continue
443 if ! test -d "$path"/.git -o -f "$path"/.git
444 then
445 module_clone "$path" "$url" "$reference"|| exit
446 cloned_modules="$cloned_modules;$name"
447 subsha1=
448 else
449 subsha1=$(clear_local_git_env; cd "$path" &&
450 git rev-parse --verify HEAD) ||
451 die "Unable to find current revision in submodule path '$path'"
454 if ! test -z "$update"
455 then
456 update_module=$update
459 if test "$subsha1" != "$sha1"
460 then
461 force=
462 if test -z "$subsha1"
463 then
464 force="-f"
467 if test -z "$nofetch"
468 then
469 (clear_local_git_env; cd "$path" &&
470 git-fetch) ||
471 die "Unable to fetch in submodule path '$path'"
474 # Is this something we just cloned?
475 case ";$cloned_modules;" in
476 *";$name;"*)
477 # then there is no local change to integrate
478 update_module= ;;
479 esac
481 case "$update_module" in
482 rebase)
483 command="git rebase"
484 action="rebase"
485 msg="rebased onto"
487 merge)
488 command="git merge"
489 action="merge"
490 msg="merged in"
493 command="git checkout $force -q"
494 action="checkout"
495 msg="checked out"
497 esac
499 (clear_local_git_env; cd "$path" && $command "$sha1") ||
500 die "Unable to $action '$sha1' in submodule path '$path'"
501 say "Submodule path '$path': $msg '$sha1'"
504 if test -n "$recursive"
505 then
506 (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
507 die "Failed to recurse into submodule path '$path'"
509 done
512 set_name_rev () {
513 revname=$( (
514 clear_local_git_env
515 cd "$1" && {
516 git describe "$2" 2>/dev/null ||
517 git describe --tags "$2" 2>/dev/null ||
518 git describe --contains "$2" 2>/dev/null ||
519 git describe --all --always "$2"
522 test -z "$revname" || revname=" ($revname)"
525 # Show commit summary for submodules in index or working tree
527 # If '--cached' is given, show summary between index and given commit,
528 # or between working tree and given commit
530 # $@ = [commit (default 'HEAD'),] requested paths (default all)
532 cmd_summary() {
533 summary_limit=-1
534 for_status=
535 diff_cmd=diff-index
537 # parse $args after "submodule ... summary".
538 while test $# -ne 0
540 case "$1" in
541 --cached)
542 cached="$1"
544 --files)
545 files="$1"
547 --for-status)
548 for_status="$1"
550 -n|--summary-limit)
551 if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
552 then
554 else
555 usage
557 shift
560 shift
561 break
564 usage
567 break
569 esac
570 shift
571 done
573 test $summary_limit = 0 && return
575 if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
576 then
577 head=$rev
578 test $# = 0 || shift
579 elif test -z "$1" -o "$1" = "HEAD"
580 then
581 # before the first commit: compare with an empty tree
582 head=$(git hash-object -w -t tree --stdin </dev/null)
583 test -z "$1" || shift
584 else
585 head="HEAD"
588 if [ -n "$files" ]
589 then
590 test -n "$cached" &&
591 die "--cached cannot be used with --files"
592 diff_cmd=diff-files
593 head=
596 cd_to_toplevel
597 # Get modified modules cared by user
598 modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
599 sane_egrep '^:([0-7]* )?160000' |
600 while read mod_src mod_dst sha1_src sha1_dst status name
602 # Always show modules deleted or type-changed (blob<->module)
603 test $status = D -o $status = T && echo "$name" && continue
604 # Also show added or modified modules which are checked out
605 GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
606 echo "$name"
607 done
610 test -z "$modules" && return
612 git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
613 sane_egrep '^:([0-7]* )?160000' |
614 cut -c2- |
615 while read mod_src mod_dst sha1_src sha1_dst status name
617 if test -z "$cached" &&
618 test $sha1_dst = 0000000000000000000000000000000000000000
619 then
620 case "$mod_dst" in
621 160000)
622 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
624 100644 | 100755 | 120000)
625 sha1_dst=$(git hash-object $name)
627 000000)
628 ;; # removed
630 # unexpected type
631 echo >&2 "unexpected mode $mod_dst"
632 continue ;;
633 esac
635 missing_src=
636 missing_dst=
638 test $mod_src = 160000 &&
639 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
640 missing_src=t
642 test $mod_dst = 160000 &&
643 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
644 missing_dst=t
646 total_commits=
647 case "$missing_src,$missing_dst" in
649 errmsg=" Warn: $name doesn't contain commit $sha1_src"
652 errmsg=" Warn: $name doesn't contain commit $sha1_dst"
654 t,t)
655 errmsg=" Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
658 errmsg=
659 total_commits=$(
660 if test $mod_src = 160000 -a $mod_dst = 160000
661 then
662 range="$sha1_src...$sha1_dst"
663 elif test $mod_src = 160000
664 then
665 range=$sha1_src
666 else
667 range=$sha1_dst
669 GIT_DIR="$name/.git" \
670 git rev-list --first-parent $range -- | wc -l
672 total_commits=" ($(($total_commits + 0)))"
674 esac
676 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
677 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
678 if test $status = T
679 then
680 if test $mod_dst = 160000
681 then
682 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
683 else
684 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
686 else
687 echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
689 if test -n "$errmsg"
690 then
691 # Don't give error msg for modification whose dst is not submodule
692 # i.e. deleted or changed to blob
693 test $mod_dst = 160000 && echo "$errmsg"
694 else
695 if test $mod_src = 160000 -a $mod_dst = 160000
696 then
697 limit=
698 test $summary_limit -gt 0 && limit="-$summary_limit"
699 GIT_DIR="$name/.git" \
700 git log $limit --pretty='format: %m %s' \
701 --first-parent $sha1_src...$sha1_dst
702 elif test $mod_dst = 160000
703 then
704 GIT_DIR="$name/.git" \
705 git log --pretty='format: > %s' -1 $sha1_dst
706 else
707 GIT_DIR="$name/.git" \
708 git log --pretty='format: < %s' -1 $sha1_src
710 echo
712 echo
713 done |
714 if test -n "$for_status"; then
715 if [ -n "$files" ]; then
716 echo "# Submodules changed but not updated:"
717 else
718 echo "# Submodule changes to be committed:"
720 echo "#"
721 sed -e 's|^|# |' -e 's|^# $|#|'
722 else
727 # List all submodules, prefixed with:
728 # - submodule not initialized
729 # + different revision checked out
731 # If --cached was specified the revision in the index will be printed
732 # instead of the currently checked out revision.
734 # $@ = requested paths (default to all)
736 cmd_status()
738 # parse $args after "submodule ... status".
739 orig_flags=
740 while test $# -ne 0
742 case "$1" in
743 -q|--quiet)
744 GIT_QUIET=1
746 --cached)
747 cached=1
749 --recursive)
750 recursive=1
753 shift
754 break
757 usage
760 break
762 esac
763 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
764 shift
765 done
767 module_list "$@" |
768 while read mode sha1 stage path
770 name=$(module_name "$path") || exit
771 url=$(git config submodule."$name".url)
772 displaypath="$prefix$path"
773 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
774 then
775 say "-$sha1 $displaypath"
776 continue;
778 set_name_rev "$path" "$sha1"
779 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
780 then
781 say " $sha1 $displaypath$revname"
782 else
783 if test -z "$cached"
784 then
785 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
786 set_name_rev "$path" "$sha1"
788 say "+$sha1 $displaypath$revname"
791 if test -n "$recursive"
792 then
794 prefix="$displaypath/"
795 clear_local_git_env
796 cd "$path" &&
797 eval cmd_status "$orig_args"
798 ) ||
799 die "Failed to recurse into submodule path '$path'"
801 done
804 # Sync remote urls for submodules
805 # This makes the value for remote.$remote.url match the value
806 # specified in .gitmodules.
808 cmd_sync()
810 while test $# -ne 0
812 case "$1" in
813 -q|--quiet)
814 GIT_QUIET=1
815 shift
818 shift
819 break
822 usage
825 break
827 esac
828 done
829 cd_to_toplevel
830 module_list "$@" |
831 while read mode sha1 stage path
833 name=$(module_name "$path")
834 url=$(git config -f .gitmodules --get submodule."$name".url)
836 # Possibly a url relative to parent
837 case "$url" in
838 ./*|../*)
839 url=$(resolve_relative_url "$url") || exit
841 esac
843 say "Synchronizing submodule url for '$name'"
844 git config submodule."$name".url "$url"
846 if test -e "$path"/.git
847 then
849 clear_local_git_env
850 cd "$path"
851 remote=$(get_default_remote)
852 git config remote."$remote".url "$url"
855 done
858 # This loop parses the command line arguments to find the
859 # subcommand name to dispatch. Parsing of the subcommand specific
860 # options are primarily done by the subcommand implementations.
861 # Subcommand specific options such as --branch and --cached are
862 # parsed here as well, for backward compatibility.
864 while test $# != 0 && test -z "$command"
866 case "$1" in
867 add | foreach | init | update | status | summary | sync)
868 command=$1
870 -q|--quiet)
871 GIT_QUIET=1
873 -b|--branch)
874 case "$2" in
876 usage
878 esac
879 branch="$2"; shift
881 --cached)
882 cached="$1"
885 break
888 usage
891 break
893 esac
894 shift
895 done
897 # No command word defaults to "status"
898 test -n "$command" || command=status
900 # "-b branch" is accepted only by "add"
901 if test -n "$branch" && test "$command" != add
902 then
903 usage
906 # "--cached" is accepted only by "status" and "summary"
907 if test -n "$cached" && test "$command" != status -a "$command" != summary
908 then
909 usage
912 "cmd_$command" "$@"