Windows ANSI - hook write()
[git/mingw/4msysgit/peterh.git] / git-submodule.sh
blob3eb78cc724187998aa9ecf71509325631b8668c9
1 #!/bin/sh
3 # git-submodules.sh: add, init, update or list git submodules
5 # Copyright (c) 2007 Lars Hjemli
7 USAGE="[--quiet] [--cached] \
8 [add <repo> [-b branch]|status|init|update [-i|--init]|summary [-n|--summary-limit <n>] [<commit>]] \
9 [--] [<path>...]"
10 OPTIONS_SPEC=
11 . git-sh-setup
12 require_work_tree
14 command=
15 branch=
16 quiet=
17 cached=
20 # print stuff on stdout unless -q was specified
22 say()
24 if test -z "$quiet"
25 then
26 echo "$@"
30 # NEEDSWORK: identical function exists in get_repo_base in clone.sh
31 get_repo_base() {
33 cd "`/bin/pwd`" &&
34 cd "$1" || cd "$1.git" &&
36 cd .git
37 pwd
39 ) 2>/dev/null
42 # Resolve relative url by appending to parent's url
43 resolve_relative_url ()
45 branch="$(git symbolic-ref HEAD 2>/dev/null)"
46 remote="$(git config branch.${branch#refs/heads/}.remote)"
47 remote="${remote:-origin}"
48 remoteurl=$(git config "remote.$remote.url") ||
49 die "remote ($remote) does not have a url defined in .git/config"
50 url="$1"
51 while test -n "$url"
53 case "$url" in
54 ../*)
55 url="${url#../}"
56 remoteurl="${remoteurl%/*}"
58 ./*)
59 url="${url#./}"
62 break;;
63 esac
64 done
65 echo "$remoteurl/$url"
69 # Map submodule path to submodule name
71 # $1 = path
73 module_name()
75 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
76 re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
77 name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
78 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
79 test -z "$name" &&
80 die "No submodule mapping found in .gitmodules for path '$path'"
81 echo "$name"
85 # Clone a submodule
87 # Prior to calling, cmd_update checks that a possibly existing
88 # path is not a git repository.
89 # Likewise, cmd_add checks that path does not exist at all,
90 # since it is the location of a new submodule.
92 module_clone()
94 path=$1
95 url=$2
97 # If there already is a directory at the submodule path,
98 # expect it to be empty (since that is the default checkout
99 # action) and try to remove it.
100 # Note: if $path is a symlink to a directory the test will
101 # succeed but the rmdir will fail. We might want to fix this.
102 if test -d "$path"
103 then
104 rmdir "$path" 2>/dev/null ||
105 die "Directory '$path' exist, but is neither empty nor a git repository"
108 test -e "$path" &&
109 die "A file already exist at path '$path'"
111 git-clone -n "$url" "$path" ||
112 die "Clone of '$url' into submodule path '$path' failed"
116 # Add a new submodule to the working tree, .gitmodules and the index
118 # $@ = repo [path]
120 # optional branch is stored in global branch variable
122 cmd_add()
124 # parse $args after "submodule ... add".
125 while test $# -ne 0
127 case "$1" in
128 -b | --branch)
129 case "$2" in '') usage ;; esac
130 branch=$2
131 shift
133 -q|--quiet)
134 quiet=1
137 shift
138 break
141 usage
144 break
146 esac
147 shift
148 done
150 repo=$1
151 path=$2
153 if test -z "$repo"; then
154 usage
157 # Guess path from repo if not specified or strip trailing slashes
158 if test -z "$path"; then
159 path=$(echo "$repo" | sed -e 's|/*$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
160 else
161 path=$(echo "$path" | sed -e 's|/*$||')
164 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
165 die "'$path' already exists in the index"
167 # perhaps the path exists and is already a git repo, else clone it
168 if test -e "$path"
169 then
170 if test -d "$path/.git" &&
171 test "$(unset GIT_DIR; cd $path; git rev-parse --git-dir)" = ".git"
172 then
173 echo "Adding existing repo at '$path' to the index"
174 else
175 die "'$path' already exists and is not a valid git repo"
177 else
178 case "$repo" in
179 ./*|../*)
180 # dereference source url relative to parent's url
181 realrepo=$(resolve_relative_url "$repo") || exit
184 # Turn the source into an absolute path if
185 # it is local
186 if base=$(get_repo_base "$repo"); then
187 repo="$base"
189 realrepo=$repo
191 esac
193 module_clone "$path" "$realrepo" || exit
194 (unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
195 die "Unable to checkout submodule '$path'"
198 git add "$path" ||
199 die "Failed to add submodule '$path'"
201 git config -f .gitmodules submodule."$path".path "$path" &&
202 git config -f .gitmodules submodule."$path".url "$repo" &&
203 git add .gitmodules ||
204 die "Failed to register submodule '$path'"
208 # Register submodules in .git/config
210 # $@ = requested paths (default to all)
212 cmd_init()
214 # parse $args after "submodule ... init".
215 while test $# -ne 0
217 case "$1" in
218 -q|--quiet)
219 quiet=1
222 shift
223 break
226 usage
229 break
231 esac
232 shift
233 done
235 git ls-files --stage -- "$@" | grep '^160000 ' |
236 while read mode sha1 stage path
238 # Skip already registered paths
239 name=$(module_name "$path") || exit
240 url=$(git config submodule."$name".url)
241 test -z "$url" || continue
243 url=$(git config -f .gitmodules submodule."$name".url)
244 test -z "$url" &&
245 die "No url found for submodule path '$path' in .gitmodules"
247 # Possibly a url relative to parent
248 case "$url" in
249 ./*|../*)
250 url=$(resolve_relative_url "$url") || exit
252 esac
254 git config submodule."$name".url "$url" ||
255 die "Failed to register url for submodule path '$path'"
257 say "Submodule '$name' ($url) registered for path '$path'"
258 done
262 # Update each submodule path to correct revision, using clone and checkout as needed
264 # $@ = requested paths (default to all)
266 cmd_update()
268 # parse $args after "submodule ... update".
269 while test $# -ne 0
271 case "$1" in
272 -q|--quiet)
273 quiet=1
275 -i|--init)
276 shift
277 cmd_init "$@" || return
280 shift
281 break
284 usage
287 break
289 esac
290 shift
291 done
293 git ls-files --stage -- "$@" | grep '^160000 ' |
294 while read mode sha1 stage path
296 name=$(module_name "$path") || exit
297 url=$(git config submodule."$name".url)
298 if test -z "$url"
299 then
300 # Only mention uninitialized submodules when its
301 # path have been specified
302 test "$#" != "0" &&
303 say "Submodule path '$path' not initialized"
304 say "Maybe you want to use 'update --init'?"
305 continue
308 if ! test -d "$path"/.git -o -f "$path"/.git
309 then
310 module_clone "$path" "$url" || exit
311 subsha1=
312 else
313 subsha1=$(unset GIT_DIR; cd "$path" &&
314 git rev-parse --verify HEAD) ||
315 die "Unable to find current revision in submodule path '$path'"
318 if test "$subsha1" != "$sha1"
319 then
320 (unset GIT_DIR; cd "$path" && git-fetch &&
321 git-checkout -q "$sha1") ||
322 die "Unable to checkout '$sha1' in submodule path '$path'"
324 say "Submodule path '$path': checked out '$sha1'"
326 done
329 set_name_rev () {
330 revname=$( (
331 unset GIT_DIR
332 cd "$1" && {
333 git describe "$2" 2>/dev/null ||
334 git describe --tags "$2" 2>/dev/null ||
335 git describe --contains "$2" 2>/dev/null ||
336 git describe --all --always "$2"
339 test -z "$revname" || revname=" ($revname)"
342 # Show commit summary for submodules in index or working tree
344 # If '--cached' is given, show summary between index and given commit,
345 # or between working tree and given commit
347 # $@ = [commit (default 'HEAD'),] requested paths (default all)
349 cmd_summary() {
350 summary_limit=-1
351 for_status=
353 # parse $args after "submodule ... summary".
354 while test $# -ne 0
356 case "$1" in
357 --cached)
358 cached="$1"
360 --for-status)
361 for_status="$1"
363 -n|--summary-limit)
364 if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
365 then
367 else
368 usage
370 shift
373 shift
374 break
377 usage
380 break
382 esac
383 shift
384 done
386 test $summary_limit = 0 && return
388 if rev=$(git rev-parse --verify "$1^0" 2>/dev/null)
389 then
390 head=$rev
391 shift
392 else
393 head=HEAD
396 cd_to_toplevel
397 # Get modified modules cared by user
398 modules=$(git diff-index $cached --raw $head -- "$@" |
399 grep -e '^:160000' -e '^:[0-7]* 160000' |
400 while read mod_src mod_dst sha1_src sha1_dst status name
402 # Always show modules deleted or type-changed (blob<->module)
403 test $status = D -o $status = T && echo "$name" && continue
404 # Also show added or modified modules which are checked out
405 GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
406 echo "$name"
407 done
410 test -z "$modules" && return
412 git diff-index $cached --raw $head -- $modules |
413 grep -e '^:160000' -e '^:[0-7]* 160000' |
414 cut -c2- |
415 while read mod_src mod_dst sha1_src sha1_dst status name
417 if test -z "$cached" &&
418 test $sha1_dst = 0000000000000000000000000000000000000000
419 then
420 case "$mod_dst" in
421 160000)
422 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
424 100644 | 100755 | 120000)
425 sha1_dst=$(git hash-object $name)
427 000000)
428 ;; # removed
430 # unexpected type
431 echo >&2 "unexpected mode $mod_dst"
432 continue ;;
433 esac
435 missing_src=
436 missing_dst=
438 test $mod_src = 160000 &&
439 ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_src^0 >/dev/null 2>&1 &&
440 missing_src=t
442 test $mod_dst = 160000 &&
443 ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_dst^0 >/dev/null 2>&1 &&
444 missing_dst=t
446 total_commits=
447 case "$missing_src,$missing_dst" in
449 errmsg=" Warn: $name doesn't contain commit $sha1_src"
452 errmsg=" Warn: $name doesn't contain commit $sha1_dst"
454 t,t)
455 errmsg=" Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
458 errmsg=
459 total_commits=$(
460 if test $mod_src = 160000 -a $mod_dst = 160000
461 then
462 range="$sha1_src...$sha1_dst"
463 elif test $mod_src = 160000
464 then
465 range=$sha1_src
466 else
467 range=$sha1_dst
469 GIT_DIR="$name/.git" \
470 git log --pretty=oneline --first-parent $range | wc -l
472 total_commits=" ($(($total_commits + 0)))"
474 esac
476 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
477 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
478 if test $status = T
479 then
480 if test $mod_dst = 160000
481 then
482 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
483 else
484 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
486 else
487 echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
489 if test -n "$errmsg"
490 then
491 # Don't give error msg for modification whose dst is not submodule
492 # i.e. deleted or changed to blob
493 test $mod_dst = 160000 && echo "$errmsg"
494 else
495 if test $mod_src = 160000 -a $mod_dst = 160000
496 then
497 limit=
498 test $summary_limit -gt 0 && limit="-$summary_limit"
499 GIT_DIR="$name/.git" \
500 git log $limit --pretty='format: %m %s' \
501 --first-parent $sha1_src...$sha1_dst
502 elif test $mod_dst = 160000
503 then
504 GIT_DIR="$name/.git" \
505 git log --pretty='format: > %s' -1 $sha1_dst
506 else
507 GIT_DIR="$name/.git" \
508 git log --pretty='format: < %s' -1 $sha1_src
510 echo
512 echo
513 done |
514 if test -n "$for_status"; then
515 echo "# Modified submodules:"
516 echo "#"
517 sed -e 's|^|# |' -e 's|^# $|#|'
518 else
523 # List all submodules, prefixed with:
524 # - submodule not initialized
525 # + different revision checked out
527 # If --cached was specified the revision in the index will be printed
528 # instead of the currently checked out revision.
530 # $@ = requested paths (default to all)
532 cmd_status()
534 # parse $args after "submodule ... status".
535 while test $# -ne 0
537 case "$1" in
538 -q|--quiet)
539 quiet=1
541 --cached)
542 cached=1
545 shift
546 break
549 usage
552 break
554 esac
555 shift
556 done
558 git ls-files --stage -- "$@" | grep '^160000 ' |
559 while read mode sha1 stage path
561 name=$(module_name "$path") || exit
562 url=$(git config submodule."$name".url)
563 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
564 then
565 say "-$sha1 $path"
566 continue;
568 set_name_rev "$path" "$sha1"
569 if git diff-files --quiet -- "$path"
570 then
571 say " $sha1 $path$revname"
572 else
573 if test -z "$cached"
574 then
575 sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
576 set_name_rev "$path" "$sha1"
578 say "+$sha1 $path$revname"
580 done
583 # This loop parses the command line arguments to find the
584 # subcommand name to dispatch. Parsing of the subcommand specific
585 # options are primarily done by the subcommand implementations.
586 # Subcommand specific options such as --branch and --cached are
587 # parsed here as well, for backward compatibility.
589 while test $# != 0 && test -z "$command"
591 case "$1" in
592 add | init | update | status | summary)
593 command=$1
595 -q|--quiet)
596 quiet=1
598 -b|--branch)
599 case "$2" in
601 usage
603 esac
604 branch="$2"; shift
606 --cached)
607 cached="$1"
610 break
613 usage
616 break
618 esac
619 shift
620 done
622 # No command word defaults to "status"
623 test -n "$command" || command=status
625 # "-b branch" is accepted only by "add"
626 if test -n "$branch" && test "$command" != add
627 then
628 usage
631 # "--cached" is accepted only by "status" and "summary"
632 if test -n "$cached" && test "$command" != status -a "$command" != summary
633 then
634 usage
637 "cmd_$command" "$@"