3 # git-submodules.sh: add, init, update or list git submodules
5 # Copyright (c) 2007 Lars Hjemli
7 USAGE='[--quiet] [--cached] [add <repo> [-b branch]|status|init|update|summary [<commit>]] [--] [<path>...]'
18 # print stuff on stdout unless -q was specified
28 # NEEDSWORK: identical function exists in get_repo_base in clone.sh
32 cd "$1" || cd "$1.git" &&
40 # Resolve relative url by appending to parent's url
41 resolve_relative_url ()
43 branch="$(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"
54 remoteurl="${remoteurl%/*}"
63 echo "$remoteurl/$url"
67 # Map submodule path to submodule name
73 # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
74 re=$(printf '%s' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
75 name=$( GIT_CONFIG=.gitmodules \
76 git config --get-regexp '^submodule\..*\.path$' |
77 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
79 die "No submodule mapping found in .gitmodules for path '$path'"
86 # Prior to calling, cmd_update checks that a possibly existing
87 # path is not a git repository.
88 # Likewise, cmd_add checks that path does not exist at all,
89 # since it is the location of a new submodule.
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 $path is a symlink to a directory the test will
100 # succeed but the rmdir will fail. We might want to fix this.
103 rmdir "$path" 2>/dev/null ||
104 die "Directory '$path' exist, but is neither empty nor a git repository"
108 die "A file already exist at path '$path'"
110 git-clone -n "$url" "$path" ||
111 die "Clone of '$url' into submodule path '$path' failed"
115 # Add a new submodule to the working tree, .gitmodules and the index
119 # optional branch is stored in global branch variable
123 # parse $args after "submodule ... add".
128 case "$2" in '') usage ;; esac
152 if test -z "$repo"; then
158 # dereference source url relative to parent's url
159 realrepo="$(resolve_relative_url $repo)" ;;
161 # Turn the source into an absolute path if
163 if base=$(get_repo_base "$repo"); then
170 # Guess path from repo if not specified or strip trailing slashes
171 if test -z "$path"; then
172 path=$(echo "$repo" | sed -e 's|/*$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
174 path=$(echo "$path" | sed -e 's|/*$||')
178 die "'$path' already exists"
180 git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
181 die "'$path' already exists in the index"
183 module_clone "$path" "$realrepo" || exit
184 (unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
185 die "Unable to checkout submodule '$path'"
187 die "Failed to add submodule '$path'"
189 GIT_CONFIG=.gitmodules git config submodule."$path".path "$path" &&
190 GIT_CONFIG=.gitmodules git config submodule."$path".url "$repo" &&
191 git add .gitmodules ||
192 die "Failed to register submodule '$path'"
196 # Register submodules in .git/config
198 # $@ = requested paths (default to all)
202 # parse $args after "submodule ... init".
223 git ls-files --stage -- "$@" | grep -e '^160000 ' |
224 while read mode sha1 stage path
226 # Skip already registered paths
227 name=$(module_name "$path") || exit
228 url=$(git config submodule."$name".url)
229 test -z "$url" || continue
231 url=$(GIT_CONFIG=.gitmodules git config submodule."$name".url)
233 die "No url found for submodule path '$path' in .gitmodules"
235 # Possibly a url relative to parent
238 url="$(resolve_relative_url "$url")"
242 git config submodule."$name".url "$url" ||
243 die "Failed to register url for submodule path '$path'"
245 say "Submodule '$name' ($url) registered for path '$path'"
250 # Update each submodule path to correct revision, using clone and checkout as needed
252 # $@ = requested paths (default to all)
256 # parse $args after "submodule ... update".
277 git ls-files --stage -- "$@" | grep -e '^160000 ' |
278 while read mode sha1 stage path
280 name=$(module_name "$path") || exit
281 url=$(git config submodule."$name".url)
284 # Only mention uninitialized submodules when its
285 # path have been specified
287 say "Submodule path '$path' not initialized"
291 if ! test -d "$path"/.git
293 module_clone "$path" "$url" || exit
296 subsha1=$(unset GIT_DIR; cd "$path" &&
297 git rev-parse --verify HEAD) ||
298 die "Unable to find current revision in submodule path '$path'"
301 if test "$subsha1" != "$sha1"
303 (unset GIT_DIR; cd "$path" && git-fetch &&
304 git-checkout -q "$sha1") ||
305 die "Unable to checkout '$sha1' in submodule path '$path'"
307 say "Submodule path '$path': checked out '$sha1'"
316 git describe "$2" 2>/dev/null ||
317 git describe --tags "$2" 2>/dev/null ||
318 git describe --contains --tags "$2"
321 test -z "$revname" || revname=" ($revname)"
324 # Show commit summary for submodules in index or working tree
326 # If '--cached' is given, show summary between index and given commit,
327 # or between working tree and given commit
329 # $@ = [commit (default 'HEAD'),] requested paths (default all)
332 # parse $args after "submodule ... summary".
353 if rev=$(git rev-parse --verify "$1^0" 2>/dev/null)
362 # Get modified modules cared by user
363 modules=$(git diff-index $cached --raw $head -- "$@" |
364 grep -e '^:160000' -e '^:[0-7]* 160000' |
365 while read mod_src mod_dst sha1_src sha1_dst status name
367 # Always show modules deleted or type-changed (blob<->module)
368 test $status = D -o $status = T && echo "$name" && continue
369 # Also show added or modified modules which are checked out
370 GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
376 # List all submodules, prefixed with:
377 # - submodule not initialized
378 # + different revision checked out
380 # If --cached was specified the revision in the index will be printed
381 # instead of the currently checked out revision.
383 # $@ = requested paths (default to all)
387 # parse $args after "submodule ... status".
411 git ls-files --stage -- "$@" | grep -e '^160000 ' |
412 while read mode sha1 stage path
414 name=$(module_name "$path") || exit
415 url=$(git config submodule."$name".url)
416 if test -z "$url" || ! test -d "$path"/.git
421 set_name_rev "$path" "$sha1"
422 if git diff-files --quiet -- "$path"
424 say " $sha1 $path$revname"
428 sha1=$(unset GIT_DIR; cd "$path" && git rev-parse --verify HEAD)
429 set_name_rev "$path" "$sha1"
431 say "+$sha1 $path$revname"
436 # This loop parses the command line arguments to find the
437 # subcommand name to dispatch. Parsing of the subcommand specific
438 # options are primarily done by the subcommand implementations.
439 # Subcommand specific options such as --branch and --cached are
440 # parsed here as well, for backward compatibility.
442 while test $# != 0 && test -z "$command"
445 add | init | update | status | summary)
475 # No command word defaults to "status"
476 test -n "$command" || command=status
478 # "-b branch" is accepted only by "add"
479 if test -n "$branch" && test "$command" != add
484 # "--cached" is accepted only by "status" and "summary"
485 if test -n "$cached" && test "$command" != status -a "$command" != summary