git-fast-import: rename cmd_*() functions to parse_*()
[git/git.git] / git-submodule.sh
CommitLineData
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1#!/bin/sh
2#
ecda0723 3# git-submodules.sh: add, init, update or list git submodules
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4#
5# Copyright (c) 2007 Lars Hjemli
6
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7USAGE="[--quiet] [--cached] \
8[add <repo> [-b branch]|status|init|update|summary [-n|--summary-limit <n>] [<commit>]] \
9[--] [<path>...]"
8f321a39 10OPTIONS_SPEC=
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11. git-sh-setup
12require_work_tree
13
5c08dbbd 14command=
ecda0723 15branch=
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16quiet=
17cached=
18
19#
20# print stuff on stdout unless -q was specified
21#
22say()
23{
24 if test -z "$quiet"
25 then
26 echo "$@"
27 fi
28}
29
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30# NEEDSWORK: identical function exists in get_repo_base in clone.sh
31get_repo_base() {
32 (
33 cd "`/bin/pwd`" &&
34 cd "$1" || cd "$1.git" &&
35 {
36 cd .git
37 pwd
38 }
39 ) 2>/dev/null
40}
41
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42# Resolve relative url by appending to parent's url
43resolve_relative_url ()
44{
45 branch="$(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 in .git/config"
50 url="$1"
51 while test -n "$url"
52 do
53 case "$url" in
54 ../*)
55 url="${url#../}"
56 remoteurl="${remoteurl%/*}"
57 ;;
58 ./*)
59 url="${url#./}"
60 ;;
61 *)
62 break;;
63 esac
64 done
65 echo "$remoteurl/$url"
66}
67
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68#
69# Map submodule path to submodule name
70#
71# $1 = path
72#
73module_name()
74{
537601ac 75 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
4f2e94c0 76 re=$(printf '%s' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
a5099bb4 77 name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
537601ac 78 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
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79 test -z "$name" &&
80 die "No submodule mapping found in .gitmodules for path '$path'"
81 echo "$name"
82}
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83
84#
85# Clone a submodule
86#
23a485e3 87# Prior to calling, cmd_update checks that a possibly existing
ecda0723 88# path is not a git repository.
23a485e3 89# Likewise, cmd_add checks that path does not exist at all,
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90# since it is the location of a new submodule.
91#
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92module_clone()
93{
94 path=$1
95 url=$2
96
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"
106 fi
107
108 test -e "$path" &&
109 die "A file already exist at path '$path'"
110
111 git-clone -n "$url" "$path" ||
941987a5 112 die "Clone of '$url' into submodule path '$path' failed"
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113}
114
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115#
116# Add a new submodule to the working tree, .gitmodules and the index
117#
118# $@ = repo [path]
119#
120# optional branch is stored in global branch variable
121#
23a485e3 122cmd_add()
ecda0723 123{
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124 # parse $args after "submodule ... add".
125 while test $# -ne 0
126 do
127 case "$1" in
128 -b | --branch)
129 case "$2" in '') usage ;; esac
130 branch=$2
131 shift
132 ;;
133 -q|--quiet)
134 quiet=1
135 ;;
136 --)
137 shift
138 break
139 ;;
140 -*)
141 usage
142 ;;
143 *)
144 break
145 ;;
146 esac
147 shift
148 done
149
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150 repo=$1
151 path=$2
152
153 if test -z "$repo"; then
154 usage
155 fi
156
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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 "$path" | sed -e 's|/*$||')
162 fi
163
5be60078 164 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
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165 die "'$path' already exists in the index"
166
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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 "'$path' already exists and is not a valid git repo"
176 fi
177 else
178 case "$repo" in
179 ./*|../*)
180 # dereference source url relative to parent's url
181 realrepo="$(resolve_relative_url $repo)" ;;
182 *)
183 # Turn the source into an absolute path if
184 # it is local
185 if base=$(get_repo_base "$repo"); then
186 repo="$base"
187 fi
188 realrepo=$repo
189 ;;
190 esac
191
192 module_clone "$path" "$realrepo" || exit
193 (unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
194 die "Unable to checkout submodule '$path'"
195 fi
196
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197 git add "$path" ||
198 die "Failed to add submodule '$path'"
199
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200 git config -f .gitmodules submodule."$path".path "$path" &&
201 git config -f .gitmodules submodule."$path".url "$repo" &&
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202 git add .gitmodules ||
203 die "Failed to register submodule '$path'"
204}
205
70c7ac22 206#
211b7f19 207# Register submodules in .git/config
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208#
209# $@ = requested paths (default to all)
210#
23a485e3 211cmd_init()
70c7ac22 212{
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213 # parse $args after "submodule ... init".
214 while test $# -ne 0
215 do
216 case "$1" in
217 -q|--quiet)
218 quiet=1
219 ;;
220 --)
221 shift
222 break
223 ;;
224 -*)
225 usage
226 ;;
227 *)
228 break
229 ;;
230 esac
231 shift
232 done
233
aadbe44f 234 git ls-files --stage -- "$@" | grep '^160000 ' |
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235 while read mode sha1 stage path
236 do
211b7f19 237 # Skip already registered paths
941987a5 238 name=$(module_name "$path") || exit
5be60078 239 url=$(git config submodule."$name".url)
211b7f19 240 test -z "$url" || continue
70c7ac22 241
a5099bb4 242 url=$(git config -f .gitmodules submodule."$name".url)
70c7ac22 243 test -z "$url" &&
941987a5 244 die "No url found for submodule path '$path' in .gitmodules"
70c7ac22 245
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246 # Possibly a url relative to parent
247 case "$url" in
248 ./*|../*)
249 url="$(resolve_relative_url "$url")"
250 ;;
251 esac
252
5be60078 253 git config submodule."$name".url "$url" ||
941987a5 254 die "Failed to register url for submodule path '$path'"
70c7ac22 255
941987a5 256 say "Submodule '$name' ($url) registered for path '$path'"
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257 done
258}
259
260#
211b7f19 261# Update each submodule path to correct revision, using clone and checkout as needed
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262#
263# $@ = requested paths (default to all)
264#
23a485e3 265cmd_update()
70c7ac22 266{
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267 # parse $args after "submodule ... update".
268 while test $# -ne 0
269 do
270 case "$1" in
271 -q|--quiet)
272 quiet=1
273 ;;
274 --)
275 shift
276 break
277 ;;
278 -*)
279 usage
280 ;;
281 *)
282 break
283 ;;
284 esac
285 shift
286 done
287
aadbe44f 288 git ls-files --stage -- "$@" | grep '^160000 ' |
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289 while read mode sha1 stage path
290 do
941987a5 291 name=$(module_name "$path") || exit
5be60078 292 url=$(git config submodule."$name".url)
211b7f19 293 if test -z "$url"
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294 then
295 # Only mention uninitialized submodules when its
296 # path have been specified
297 test "$#" != "0" &&
941987a5 298 say "Submodule path '$path' not initialized"
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299 continue
300 fi
301
ba88a1fe 302 if ! test -d "$path"/.git -o -f "$path"/.git
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303 then
304 module_clone "$path" "$url" || exit
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305 subsha1=
306 else
51884080 307 subsha1=$(unset GIT_DIR; cd "$path" &&
5be60078 308 git rev-parse --verify HEAD) ||
941987a5 309 die "Unable to find current revision in submodule path '$path'"
70c7ac22 310 fi
211b7f19 311
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312 if test "$subsha1" != "$sha1"
313 then
51884080 314 (unset GIT_DIR; cd "$path" && git-fetch &&
70c7ac22 315 git-checkout -q "$sha1") ||
941987a5 316 die "Unable to checkout '$sha1' in submodule path '$path'"
70c7ac22 317
941987a5 318 say "Submodule path '$path': checked out '$sha1'"
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319 fi
320 done
321}
322
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323set_name_rev () {
324 revname=$( (
51884080 325 unset GIT_DIR
bffe71f4 326 cd "$1" && {
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327 git describe "$2" 2>/dev/null ||
328 git describe --tags "$2" 2>/dev/null ||
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329 git describe --contains "$2" 2>/dev/null ||
330 git describe --all --always "$2"
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331 }
332 ) )
333 test -z "$revname" || revname=" ($revname)"
334}
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335#
336# Show commit summary for submodules in index or working tree
337#
338# If '--cached' is given, show summary between index and given commit,
339# or between working tree and given commit
340#
341# $@ = [commit (default 'HEAD'),] requested paths (default all)
342#
343cmd_summary() {
f2dc06a3 344 summary_limit=-1
d0f64dd4 345 for_status=
f2dc06a3 346
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347 # parse $args after "submodule ... summary".
348 while test $# -ne 0
349 do
350 case "$1" in
351 --cached)
352 cached="$1"
353 ;;
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354 --for-status)
355 for_status="$1"
356 ;;
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357 -n|--summary-limit)
358 if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
359 then
360 :
361 else
362 usage
363 fi
364 shift
365 ;;
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366 --)
367 shift
368 break
369 ;;
370 -*)
371 usage
372 ;;
373 *)
374 break
375 ;;
376 esac
377 shift
378 done
bffe71f4 379
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380 test $summary_limit = 0 && return
381
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382 if rev=$(git rev-parse --verify "$1^0" 2>/dev/null)
383 then
384 head=$rev
385 shift
386 else
387 head=HEAD
388 fi
389
390 cd_to_toplevel
391 # Get modified modules cared by user
392 modules=$(git diff-index $cached --raw $head -- "$@" |
393 grep -e '^:160000' -e '^:[0-7]* 160000' |
394 while read mod_src mod_dst sha1_src sha1_dst status name
395 do
396 # Always show modules deleted or type-changed (blob<->module)
397 test $status = D -o $status = T && echo "$name" && continue
398 # Also show added or modified modules which are checked out
399 GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
400 echo "$name"
401 done
402 )
1cb639e6 403
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404 test -z "$modules" && return
405
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406 git diff-index $cached --raw $head -- $modules |
407 grep -e '^:160000' -e '^:[0-7]* 160000' |
408 cut -c2- |
409 while read mod_src mod_dst sha1_src sha1_dst status name
410 do
411 if test -z "$cached" &&
412 test $sha1_dst = 0000000000000000000000000000000000000000
413 then
414 case "$mod_dst" in
415 160000)
416 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
417 ;;
418 100644 | 100755 | 120000)
419 sha1_dst=$(git hash-object $name)
420 ;;
421 000000)
422 ;; # removed
423 *)
424 # unexpected type
425 echo >&2 "unexpected mode $mod_dst"
426 continue ;;
427 esac
428 fi
429 missing_src=
430 missing_dst=
431
432 test $mod_src = 160000 &&
433 ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_src^0 >/dev/null 2>&1 &&
434 missing_src=t
435
436 test $mod_dst = 160000 &&
437 ! GIT_DIR="$name/.git" git-rev-parse --verify $sha1_dst^0 >/dev/null 2>&1 &&
438 missing_dst=t
bffe71f4 439
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440 total_commits=
441 case "$missing_src,$missing_dst" in
442 t,)
443 errmsg=" Warn: $name doesn't contain commit $sha1_src"
444 ;;
445 ,t)
446 errmsg=" Warn: $name doesn't contain commit $sha1_dst"
447 ;;
448 t,t)
449 errmsg=" Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
450 ;;
451 *)
452 errmsg=
453 total_commits=$(
454 if test $mod_src = 160000 -a $mod_dst = 160000
455 then
456 range="$sha1_src...$sha1_dst"
457 elif test $mod_src = 160000
458 then
459 range=$sha1_src
460 else
461 range=$sha1_dst
462 fi
463 GIT_DIR="$name/.git" \
464 git log --pretty=oneline --first-parent $range | wc -l
465 )
eed35595 466 total_commits=" ($(($total_commits + 0)))"
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467 ;;
468 esac
469
470 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
471 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
472 if test $status = T
473 then
474 if test $mod_dst = 160000
475 then
476 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
477 else
478 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
479 fi
480 else
481 echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
482 fi
483 if test -n "$errmsg"
484 then
485 # Don't give error msg for modification whose dst is not submodule
486 # i.e. deleted or changed to blob
487 test $mod_dst = 160000 && echo "$errmsg"
488 else
489 if test $mod_src = 160000 -a $mod_dst = 160000
490 then
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491 limit=
492 test $summary_limit -gt 0 && limit="-$summary_limit"
1cb639e6 493 GIT_DIR="$name/.git" \
f2dc06a3 494 git log $limit --pretty='format: %m %s' \
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495 --first-parent $sha1_src...$sha1_dst
496 elif test $mod_dst = 160000
497 then
498 GIT_DIR="$name/.git" \
499 git log --pretty='format: > %s' -1 $sha1_dst
500 else
501 GIT_DIR="$name/.git" \
502 git log --pretty='format: < %s' -1 $sha1_src
503 fi
504 echo
505 fi
506 echo
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507 done |
508 if test -n "$for_status"; then
509 echo "# Modified submodules:"
510 echo "#"
511 sed -e 's|^|# |' -e 's|^# $|#|'
512 else
513 cat
514 fi
28f9af5d 515}
70c7ac22 516#
941987a5 517# List all submodules, prefixed with:
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518# - submodule not initialized
519# + different revision checked out
520#
521# If --cached was specified the revision in the index will be printed
522# instead of the currently checked out revision.
523#
524# $@ = requested paths (default to all)
525#
23a485e3 526cmd_status()
70c7ac22 527{
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528 # parse $args after "submodule ... status".
529 while test $# -ne 0
530 do
531 case "$1" in
532 -q|--quiet)
533 quiet=1
534 ;;
535 --cached)
536 cached=1
537 ;;
538 --)
539 shift
540 break
541 ;;
542 -*)
543 usage
544 ;;
545 *)
546 break
547 ;;
548 esac
549 shift
550 done
551
aadbe44f 552 git ls-files --stage -- "$@" | grep '^160000 ' |
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553 while read mode sha1 stage path
554 do
941987a5 555 name=$(module_name "$path") || exit
5be60078 556 url=$(git config submodule."$name".url)
ba88a1fe 557 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
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558 then
559 say "-$sha1 $path"
560 continue;
561 fi
41c7c1bd 562 set_name_rev "$path" "$sha1"
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563 if git diff-files --quiet -- "$path"
564 then
bffe71f4 565 say " $sha1 $path$revname"
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566 else
567 if test -z "$cached"
568 then
51884080 569 sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
41c7c1bd 570 set_name_rev "$path" "$sha1"
70c7ac22 571 fi
bffe71f4 572 say "+$sha1 $path$revname"
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573 fi
574 done
575}
576
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577# This loop parses the command line arguments to find the
578# subcommand name to dispatch. Parsing of the subcommand specific
579# options are primarily done by the subcommand implementations.
580# Subcommand specific options such as --branch and --cached are
581# parsed here as well, for backward compatibility.
582
583while test $# != 0 && test -z "$command"
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584do
585 case "$1" in
28f9af5d 586 add | init | update | status | summary)
5c08dbbd 587 command=$1
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588 ;;
589 -q|--quiet)
590 quiet=1
591 ;;
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592 -b|--branch)
593 case "$2" in
594 '')
595 usage
596 ;;
597 esac
598 branch="$2"; shift
599 ;;
70c7ac22 600 --cached)
28f9af5d 601 cached="$1"
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602 ;;
603 --)
604 break
605 ;;
606 -*)
607 usage
608 ;;
609 *)
610 break
611 ;;
612 esac
613 shift
614done
615
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616# No command word defaults to "status"
617test -n "$command" || command=status
618
619# "-b branch" is accepted only by "add"
620if test -n "$branch" && test "$command" != add
621then
ecda0723 622 usage
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623fi
624
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625# "--cached" is accepted only by "status" and "summary"
626if test -n "$cached" && test "$command" != status -a "$command" != summary
5c08dbbd 627then
70c7ac22 628 usage
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629fi
630
631"cmd_$command" "$@"