more tr portability test script fixes
[git/git.git] / git-submodule.sh
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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
ecda0723 7USAGE='[--quiet] [--cached] [add <repo> [-b branch]|status|init|update] [--] [<path>...]'
8f321a39 8OPTIONS_SPEC=
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9. git-sh-setup
10require_work_tree
11
5c08dbbd 12command=
ecda0723 13branch=
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14quiet=
15cached=
16
17#
18# print stuff on stdout unless -q was specified
19#
20say()
21{
22 if test -z "$quiet"
23 then
24 echo "$@"
25 fi
26}
27
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28# NEEDSWORK: identical function exists in get_repo_base in clone.sh
29get_repo_base() {
30 (
31 cd "`/bin/pwd`" &&
32 cd "$1" || cd "$1.git" &&
33 {
34 cd .git
35 pwd
36 }
37 ) 2>/dev/null
38}
39
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40# Resolve relative url by appending to parent's url
41resolve_relative_url ()
42{
43 branch="$(git symbolic-ref HEAD 2>/dev/null)"
44 remote="$(git config branch.${branch#refs/heads/}.remote)"
45 remote="${remote:-origin}"
46 remoteurl="$(git config remote.$remote.url)" ||
47 die "remote ($remote) does not have a url in .git/config"
48 url="$1"
49 while test -n "$url"
50 do
51 case "$url" in
52 ../*)
53 url="${url#../}"
54 remoteurl="${remoteurl%/*}"
55 ;;
56 ./*)
57 url="${url#./}"
58 ;;
59 *)
60 break;;
61 esac
62 done
63 echo "$remoteurl/$url"
64}
65
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66#
67# Map submodule path to submodule name
68#
69# $1 = path
70#
71module_name()
72{
537601ac 73 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
4f2e94c0 74 re=$(printf '%s' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
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75 name=$( GIT_CONFIG=.gitmodules \
76 git config --get-regexp '^submodule\..*\.path$' |
77 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
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78 test -z "$name" &&
79 die "No submodule mapping found in .gitmodules for path '$path'"
80 echo "$name"
81}
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82
83#
84# Clone a submodule
85#
23a485e3 86# Prior to calling, cmd_update checks that a possibly existing
ecda0723 87# path is not a git repository.
23a485e3 88# Likewise, cmd_add checks that path does not exist at all,
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89# since it is the location of a new submodule.
90#
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91module_clone()
92{
93 path=$1
94 url=$2
95
96 # If there already is a directory at the submodule path,
97 # expect it to be empty (since that is the default checkout
98 # action) and try to remove it.
99 # Note: if $path is a symlink to a directory the test will
100 # succeed but the rmdir will fail. We might want to fix this.
101 if test -d "$path"
102 then
103 rmdir "$path" 2>/dev/null ||
104 die "Directory '$path' exist, but is neither empty nor a git repository"
105 fi
106
107 test -e "$path" &&
108 die "A file already exist at path '$path'"
109
110 git-clone -n "$url" "$path" ||
941987a5 111 die "Clone of '$url' into submodule path '$path' failed"
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112}
113
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114#
115# Add a new submodule to the working tree, .gitmodules and the index
116#
117# $@ = repo [path]
118#
119# optional branch is stored in global branch variable
120#
23a485e3 121cmd_add()
ecda0723 122{
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123 # parse $args after "submodule ... add".
124 while test $# -ne 0
125 do
126 case "$1" in
127 -b | --branch)
128 case "$2" in '') usage ;; esac
129 branch=$2
130 shift
131 ;;
132 -q|--quiet)
133 quiet=1
134 ;;
135 --)
136 shift
137 break
138 ;;
139 -*)
140 usage
141 ;;
142 *)
143 break
144 ;;
145 esac
146 shift
147 done
148
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149 repo=$1
150 path=$2
151
152 if test -z "$repo"; then
153 usage
154 fi
155
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156 # Guess path from repo if not specified or strip trailing slashes
157 if test -z "$path"; then
158 path=$(echo "$repo" | sed -e 's|/*$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
159 else
160 path=$(echo "$path" | sed -e 's|/*$||')
161 fi
162
5be60078 163 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
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164 die "'$path' already exists in the index"
165
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166 # perhaps the path exists and is already a git repo, else clone it
167 if test -e "$path"
168 then
169 if test -d "$path/.git" &&
170 test "$(unset GIT_DIR; cd $path; git rev-parse --git-dir)" = ".git"
171 then
172 echo "Adding existing repo at '$path' to the index"
173 else
174 die "'$path' already exists and is not a valid git repo"
175 fi
176 else
177 case "$repo" in
178 ./*|../*)
179 # dereference source url relative to parent's url
180 realrepo="$(resolve_relative_url $repo)" ;;
181 *)
182 # Turn the source into an absolute path if
183 # it is local
184 if base=$(get_repo_base "$repo"); then
185 repo="$base"
186 fi
187 realrepo=$repo
188 ;;
189 esac
190
191 module_clone "$path" "$realrepo" || exit
192 (unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
193 die "Unable to checkout submodule '$path'"
194 fi
195
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196 git add "$path" ||
197 die "Failed to add submodule '$path'"
198
199 GIT_CONFIG=.gitmodules git config submodule."$path".path "$path" &&
200 GIT_CONFIG=.gitmodules git config submodule."$path".url "$repo" &&
201 git add .gitmodules ||
202 die "Failed to register submodule '$path'"
203}
204
70c7ac22 205#
211b7f19 206# Register submodules in .git/config
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207#
208# $@ = requested paths (default to all)
209#
23a485e3 210cmd_init()
70c7ac22 211{
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212 # parse $args after "submodule ... init".
213 while test $# -ne 0
214 do
215 case "$1" in
216 -q|--quiet)
217 quiet=1
218 ;;
219 --)
220 shift
221 break
222 ;;
223 -*)
224 usage
225 ;;
226 *)
227 break
228 ;;
229 esac
230 shift
231 done
232
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233 git ls-files --stage -- "$@" | grep -e '^160000 ' |
234 while read mode sha1 stage path
235 do
211b7f19 236 # Skip already registered paths
941987a5 237 name=$(module_name "$path") || exit
5be60078 238 url=$(git config submodule."$name".url)
211b7f19 239 test -z "$url" || continue
70c7ac22 240
5be60078 241 url=$(GIT_CONFIG=.gitmodules git config submodule."$name".url)
70c7ac22 242 test -z "$url" &&
941987a5 243 die "No url found for submodule path '$path' in .gitmodules"
70c7ac22 244
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245 # Possibly a url relative to parent
246 case "$url" in
247 ./*|../*)
248 url="$(resolve_relative_url "$url")"
249 ;;
250 esac
251
5be60078 252 git config submodule."$name".url "$url" ||
941987a5 253 die "Failed to register url for submodule path '$path'"
70c7ac22 254
941987a5 255 say "Submodule '$name' ($url) registered for path '$path'"
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256 done
257}
258
259#
211b7f19 260# Update each submodule path to correct revision, using clone and checkout as needed
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261#
262# $@ = requested paths (default to all)
263#
23a485e3 264cmd_update()
70c7ac22 265{
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266 # parse $args after "submodule ... update".
267 while test $# -ne 0
268 do
269 case "$1" in
270 -q|--quiet)
271 quiet=1
272 ;;
273 --)
274 shift
275 break
276 ;;
277 -*)
278 usage
279 ;;
280 *)
281 break
282 ;;
283 esac
284 shift
285 done
286
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287 git ls-files --stage -- "$@" | grep -e '^160000 ' |
288 while read mode sha1 stage path
289 do
941987a5 290 name=$(module_name "$path") || exit
5be60078 291 url=$(git config submodule."$name".url)
211b7f19 292 if test -z "$url"
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293 then
294 # Only mention uninitialized submodules when its
295 # path have been specified
296 test "$#" != "0" &&
941987a5 297 say "Submodule path '$path' not initialized"
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298 continue
299 fi
300
301 if ! test -d "$path"/.git
302 then
303 module_clone "$path" "$url" || exit
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304 subsha1=
305 else
51884080 306 subsha1=$(unset GIT_DIR; cd "$path" &&
5be60078 307 git rev-parse --verify HEAD) ||
941987a5 308 die "Unable to find current revision in submodule path '$path'"
70c7ac22 309 fi
211b7f19 310
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311 if test "$subsha1" != "$sha1"
312 then
51884080 313 (unset GIT_DIR; cd "$path" && git-fetch &&
70c7ac22 314 git-checkout -q "$sha1") ||
941987a5 315 die "Unable to checkout '$sha1' in submodule path '$path'"
70c7ac22 316
941987a5 317 say "Submodule path '$path': checked out '$sha1'"
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318 fi
319 done
320}
321
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322set_name_rev () {
323 revname=$( (
51884080 324 unset GIT_DIR
bffe71f4 325 cd "$1" && {
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326 git describe "$2" 2>/dev/null ||
327 git describe --tags "$2" 2>/dev/null ||
328 git describe --contains --tags "$2"
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329 }
330 ) )
331 test -z "$revname" || revname=" ($revname)"
332}
333
70c7ac22 334#
941987a5 335# List all submodules, prefixed with:
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336# - submodule not initialized
337# + different revision checked out
338#
339# If --cached was specified the revision in the index will be printed
340# instead of the currently checked out revision.
341#
342# $@ = requested paths (default to all)
343#
23a485e3 344cmd_status()
70c7ac22 345{
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346 # parse $args after "submodule ... status".
347 while test $# -ne 0
348 do
349 case "$1" in
350 -q|--quiet)
351 quiet=1
352 ;;
353 --cached)
354 cached=1
355 ;;
356 --)
357 shift
358 break
359 ;;
360 -*)
361 usage
362 ;;
363 *)
364 break
365 ;;
366 esac
367 shift
368 done
369
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370 git ls-files --stage -- "$@" | grep -e '^160000 ' |
371 while read mode sha1 stage path
372 do
941987a5 373 name=$(module_name "$path") || exit
5be60078 374 url=$(git config submodule."$name".url)
fcbcfe70 375 if test -z "$url" || ! test -d "$path"/.git
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376 then
377 say "-$sha1 $path"
378 continue;
379 fi
41c7c1bd 380 set_name_rev "$path" "$sha1"
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381 if git diff-files --quiet -- "$path"
382 then
bffe71f4 383 say " $sha1 $path$revname"
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384 else
385 if test -z "$cached"
386 then
51884080 387 sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
41c7c1bd 388 set_name_rev "$path" "$sha1"
70c7ac22 389 fi
bffe71f4 390 say "+$sha1 $path$revname"
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391 fi
392 done
393}
394
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395# This loop parses the command line arguments to find the
396# subcommand name to dispatch. Parsing of the subcommand specific
397# options are primarily done by the subcommand implementations.
398# Subcommand specific options such as --branch and --cached are
399# parsed here as well, for backward compatibility.
400
401while test $# != 0 && test -z "$command"
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402do
403 case "$1" in
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404 add | init | update | status)
405 command=$1
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406 ;;
407 -q|--quiet)
408 quiet=1
409 ;;
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410 -b|--branch)
411 case "$2" in
412 '')
413 usage
414 ;;
415 esac
416 branch="$2"; shift
417 ;;
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418 --cached)
419 cached=1
420 ;;
421 --)
422 break
423 ;;
424 -*)
425 usage
426 ;;
427 *)
428 break
429 ;;
430 esac
431 shift
432done
433
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434# No command word defaults to "status"
435test -n "$command" || command=status
436
437# "-b branch" is accepted only by "add"
438if test -n "$branch" && test "$command" != add
439then
ecda0723 440 usage
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441fi
442
443# "--cached" is accepted only by "status"
444if test -n "$cached" && test "$command" != status
445then
70c7ac22 446 usage
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447fi
448
449"cmd_$command" "$@"