git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # git-submodule.sh: add, init, update or list git submodules
   4 #
   5 # Copyright (c) 2007 Lars Hjemli
   6
   7 dashless=$(basename "$0" | sed -e 's/-/ /')
   8 USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
  13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  14    or: $dashless [--quiet] foreach [--recursive] <command>
  15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  16    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  17 OPTIONS_SPEC=
  18 SUBDIRECTORY_OK=Yes
  19 . git-sh-setup
  20 . git-parse-remote
  21 require_work_tree
  22 wt_prefix=$(git rev-parse --show-prefix)
  23 cd_to_toplevel
  24
  25 # Tell the rest of git that any URLs we get don't come
  26 # directly from the user, so it can apply policy as appropriate.
  27 GIT_PROTOCOL_FROM_USER=0
  28 export GIT_PROTOCOL_FROM_USER
  29
  30 command=
  31 branch=
  32 force=
  33 reference=
  34 cached=
  35 recursive=
  36 init=
  37 files=
  38 remote=
  39 nofetch=
  40 update=
  41 prefix=
  42 custom_name=
  43 depth=
  44 progress=
  45
  46 die_if_unmatched ()
  47 {
  48         if test "$1" = "#unmatched"
  49         then
  50                 exit ${2:-1}
  51         fi
  52 }
  53
  54 #
  55 # Print a submodule configuration setting
  56 #
  57 # $1 = submodule name
  58 # $2 = option name
  59 # $3 = default value
  60 #
  61 # Checks in the usual git-config places first (for overrides),
  62 # otherwise it falls back on .gitmodules.  This allows you to
  63 # distribute project-wide defaults in .gitmodules, while still
  64 # customizing individual repositories if necessary.  If the option is
  65 # not in .gitmodules either, print a default value.
  66 #
  67 get_submodule_config () {
  68         name="$1"
  69         option="$2"
  70         default="$3"
  71         value=$(git config submodule."$name"."$option")
  72         if test -z "$value"
  73         then
  74                 value=$(git config -f .gitmodules submodule."$name"."$option")
  75         fi
  76         printf '%s' "${value:-$default}"
  77 }
  78
  79 isnumber()
  80 {
  81         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  82 }
  83
  84 # Sanitize the local git environment for use within a submodule. We
  85 # can't simply use clear_local_git_env since we want to preserve some
  86 # of the settings from GIT_CONFIG_PARAMETERS.
  87 sanitize_submodule_env()
  88 {
  89         save_config=$GIT_CONFIG_PARAMETERS
  90         clear_local_git_env
  91         GIT_CONFIG_PARAMETERS=$save_config
  92         export GIT_CONFIG_PARAMETERS
  93 }
  94
  95 #
  96 # Add a new submodule to the working tree, .gitmodules and the index
  97 #
  98 # $@ = repo path
  99 #
 100 # optional branch is stored in global branch variable
 101 #
 102 cmd_add()
 103 {
 104         # parse $args after "submodule ... add".
 105         reference_path=
 106         while test $# -ne 0
 107         do
 108                 case "$1" in
 109                 -b | --branch)
 110                         case "$2" in '') usage ;; esac
 111                         branch=$2
 112                         shift
 113                         ;;
 114                 -f | --force)
 115                         force=$1
 116                         ;;
 117                 -q|--quiet)
 118                         GIT_QUIET=1
 119                         ;;
 120                 --reference)
 121                         case "$2" in '') usage ;; esac
 122                         reference_path=$2
 123                         shift
 124                         ;;
 125                 --reference=*)
 126                         reference_path="${1#--reference=}"
 127                         ;;
 128                 --name)
 129                         case "$2" in '') usage ;; esac
 130                         custom_name=$2
 131                         shift
 132                         ;;
 133                 --depth)
 134                         case "$2" in '') usage ;; esac
 135                         depth="--depth=$2"
 136                         shift
 137                         ;;
 138                 --depth=*)
 139                         depth=$1
 140                         ;;
 141                 --)
 142                         shift
 143                         break
 144                         ;;
 145                 -*)
 146                         usage
 147                         ;;
 148                 *)
 149                         break
 150                         ;;
 151                 esac
 152                 shift
 153         done
 154
 155         if test -n "$reference_path"
 156         then
 157                 is_absolute_path "$reference_path" ||
 158                 reference_path="$wt_prefix$reference_path"
 159
 160                 reference="--reference=$reference_path"
 161         fi
 162
 163         repo=$1
 164         sm_path=$2
 165
 166         if test -z "$sm_path"; then
 167                 sm_path=$(printf '%s\n' "$repo" |
 168                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 169         fi
 170
 171         if test -z "$repo" || test -z "$sm_path"; then
 172                 usage
 173         fi
 174
 175         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 176
 177         # assure repo is absolute or relative to parent
 178         case "$repo" in
 179         ./*|../*)
 180                 test -z "$wt_prefix" ||
 181                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 182
 183                 # dereference source url relative to parent's url
 184                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 185                 ;;
 186         *:*|/*)
 187                 # absolute url
 188                 realrepo=$repo
 189                 ;;
 190         *)
 191                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 192         ;;
 193         esac
 194
 195         # normalize path:
 196         # multiple //; leading ./; /./; /../; trailing /
 197         sm_path=$(printf '%s/\n' "$sm_path" |
 198                 sed -e '
 199                         s|//*|/|g
 200                         s|^\(\./\)*||
 201                         s|/\(\./\)*|/|g
 202                         :start
 203                         s|\([^/]*\)/\.\./||
 204                         tstart
 205                         s|/*$||
 206                 ')
 207         if test -z "$force"
 208         then
 209                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 210                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
 211         else
 212                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 213                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 214         fi
 215
 216         if test -z "$force" &&
 217                 ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
 218         then
 219                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 220 \$sm_path
 221 Use -f if you really want to add it." >&2
 222                 exit 1
 223         fi
 224
 225         if test -n "$custom_name"
 226         then
 227                 sm_name="$custom_name"
 228         else
 229                 sm_name="$sm_path"
 230         fi
 231
 232         if ! git submodule--helper check-name "$sm_name"
 233         then
 234                 die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
 235         fi
 236
 237         # perhaps the path exists and is already a git repo, else clone it
 238         if test -e "$sm_path"
 239         then
 240                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 241                 then
 242                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 243                 else
 244                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 245                 fi
 246
 247         else
 248                 if test -d ".git/modules/$sm_name"
 249                 then
 250                         if test -z "$force"
 251                         then
 252                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 253                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 254                                 die "$(eval_gettextln "\
 255 If you want to reuse this local git directory instead of cloning again from
 256   \$realrepo
 257 use the '--force' option. If the local git directory is not the correct repo
 258 or you are unsure what this means choose another name with the '--name' option.")"
 259                         else
 260                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 261                         fi
 262                 fi
 263                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 264                 (
 265                         sanitize_submodule_env
 266                         cd "$sm_path" &&
 267                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 268                         case "$branch" in
 269                         '') git checkout -f -q ;;
 270                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 271                         esac
 272                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 273         fi
 274         git config submodule."$sm_name".url "$realrepo"
 275
 276         git add --no-warn-embedded-repo $force "$sm_path" ||
 277         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 278
 279         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 280         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 281         if test -n "$branch"
 282         then
 283                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
 284         fi &&
 285         git add --force .gitmodules ||
 286         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 287
 288         # NEEDSWORK: In a multi-working-tree world, this needs to be
 289         # set in the per-worktree config.
 290         if git config --get submodule.active >/dev/null
 291         then
 292                 # If the submodule being adding isn't already covered by the
 293                 # current configured pathspec, set the submodule's active flag
 294                 if ! git submodule--helper is-active "$sm_path"
 295                 then
 296                         git config submodule."$sm_name".active "true"
 297                 fi
 298         else
 299                 git config submodule."$sm_name".active "true"
 300         fi
 301 }
 302
 303 #
 304 # Execute an arbitrary command sequence in each checked out
 305 # submodule
 306 #
 307 # $@ = command to execute
 308 #
 309 cmd_foreach()
 310 {
 311         # parse $args after "submodule ... foreach".
 312         while test $# -ne 0
 313         do
 314                 case "$1" in
 315                 -q|--quiet)
 316                         GIT_QUIET=1
 317                         ;;
 318                 --recursive)
 319                         recursive=1
 320                         ;;
 321                 -*)
 322                         usage
 323                         ;;
 324                 *)
 325                         break
 326                         ;;
 327                 esac
 328                 shift
 329         done
 330
 331         toplevel=$(pwd)
 332
 333         # dup stdin so that it can be restored when running the external
 334         # command in the subshell (and a recursive call to this function)
 335         exec 3<&0
 336
 337         {
 338                 git submodule--helper list --prefix "$wt_prefix" ||
 339                 echo "#unmatched" $?
 340         } |
 341         while read -r mode sha1 stage sm_path
 342         do
 343                 die_if_unmatched "$mode" "$sha1"
 344                 if test -e "$sm_path"/.git
 345                 then
 346                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 347                         say "$(eval_gettext "Entering '\$displaypath'")"
 348                         name=$(git submodule--helper name "$sm_path")
 349                         (
 350                                 prefix="$prefix$sm_path/"
 351                                 sanitize_submodule_env
 352                                 cd "$sm_path" &&
 353                                 sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
 354                                 # we make $path available to scripts ...
 355                                 path=$sm_path &&
 356                                 if test $# -eq 1
 357                                 then
 358                                         eval "$1"
 359                                 else
 360                                         "$@"
 361                                 fi &&
 362                                 if test -n "$recursive"
 363                                 then
 364                                         cmd_foreach "--recursive" "$@"
 365                                 fi
 366                         ) <&3 3<&- ||
 367                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 368                 fi
 369         done
 370 }
 371
 372 #
 373 # Register submodules in .git/config
 374 #
 375 # $@ = requested paths (default to all)
 376 #
 377 cmd_init()
 378 {
 379         # parse $args after "submodule ... init".
 380         while test $# -ne 0
 381         do
 382                 case "$1" in
 383                 -q|--quiet)
 384                         GIT_QUIET=1
 385                         ;;
 386                 --)
 387                         shift
 388                         break
 389                         ;;
 390                 -*)
 391                         usage
 392                         ;;
 393                 *)
 394                         break
 395                         ;;
 396                 esac
 397                 shift
 398         done
 399
 400         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 401 }
 402
 403 #
 404 # Unregister submodules from .git/config and remove their work tree
 405 #
 406 cmd_deinit()
 407 {
 408         # parse $args after "submodule ... deinit".
 409         deinit_all=
 410         while test $# -ne 0
 411         do
 412                 case "$1" in
 413                 -f|--force)
 414                         force=$1
 415                         ;;
 416                 -q|--quiet)
 417                         GIT_QUIET=1
 418                         ;;
 419                 --all)
 420                         deinit_all=t
 421                         ;;
 422                 --)
 423                         shift
 424                         break
 425                         ;;
 426                 -*)
 427                         usage
 428                         ;;
 429                 *)
 430                         break
 431                         ;;
 432                 esac
 433                 shift
 434         done
 435
 436         if test -n "$deinit_all" && test "$#" -ne 0
 437         then
 438                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 439                 usage
 440         fi
 441         if test $# = 0 && test -z "$deinit_all"
 442         then
 443                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 444         fi
 445
 446         {
 447                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
 448                 echo "#unmatched" $?
 449         } |
 450         while read -r mode sha1 stage sm_path
 451         do
 452                 die_if_unmatched "$mode" "$sha1"
 453                 name=$(git submodule--helper name "$sm_path") || exit
 454
 455                 displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
 456
 457                 # Remove the submodule work tree (unless the user already did it)
 458                 if test -d "$sm_path"
 459                 then
 460                         # Protect submodules containing a .git directory
 461                         if test -d "$sm_path/.git"
 462                         then
 463                                 die "$(eval_gettext "\
 464 Submodule work tree '\$displaypath' contains a .git directory
 465 (use 'rm -rf' if you really want to remove it including all of its history)")"
 466                         fi
 467
 468                         if test -z "$force"
 469                         then
 470                                 git rm -qn "$sm_path" ||
 471                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 472                         fi
 473                         rm -rf "$sm_path" &&
 474                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 475                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 476                 fi
 477
 478                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 479
 480                 # Remove the .git/config entries (unless the user already did it)
 481                 if test -n "$(git config --get-regexp submodule."$name\.")"
 482                 then
 483                         # Remove the whole section so we have a clean state when
 484                         # the user later decides to init this submodule again
 485                         url=$(git config submodule."$name".url)
 486                         git config --remove-section submodule."$name" 2>/dev/null &&
 487                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 488                 fi
 489         done
 490 }
 491
 492 is_tip_reachable () (
 493         sanitize_submodule_env &&
 494         cd "$1" &&
 495         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 496         test -z "$rev"
 497 )
 498
 499 fetch_in_submodule () (
 500         sanitize_submodule_env &&
 501         cd "$1" &&
 502         case "$2" in
 503         '')
 504                 git fetch ;;
 505         *)
 506                 shift
 507                 git fetch $(get_default_remote) "$@" ;;
 508         esac
 509 )
 510
 511 #
 512 # Update each submodule path to correct revision, using clone and checkout as needed
 513 #
 514 # $@ = requested paths (default to all)
 515 #
 516 cmd_update()
 517 {
 518         # parse $args after "submodule ... update".
 519         while test $# -ne 0
 520         do
 521                 case "$1" in
 522                 -q|--quiet)
 523                         GIT_QUIET=1
 524                         ;;
 525                 --progress)
 526                         progress="--progress"
 527                         ;;
 528                 -i|--init)
 529                         init=1
 530                         ;;
 531                 --remote)
 532                         remote=1
 533                         ;;
 534                 -N|--no-fetch)
 535                         nofetch=1
 536                         ;;
 537                 -f|--force)
 538                         force=$1
 539                         ;;
 540                 -r|--rebase)
 541                         update="rebase"
 542                         ;;
 543                 --reference)
 544                         case "$2" in '') usage ;; esac
 545                         reference="--reference=$2"
 546                         shift
 547                         ;;
 548                 --reference=*)
 549                         reference="$1"
 550                         ;;
 551                 -m|--merge)
 552                         update="merge"
 553                         ;;
 554                 --recursive)
 555                         recursive=1
 556                         ;;
 557                 --checkout)
 558                         update="checkout"
 559                         ;;
 560                 --recommend-shallow)
 561                         recommend_shallow="--recommend-shallow"
 562                         ;;
 563                 --no-recommend-shallow)
 564                         recommend_shallow="--no-recommend-shallow"
 565                         ;;
 566                 --depth)
 567                         case "$2" in '') usage ;; esac
 568                         depth="--depth=$2"
 569                         shift
 570                         ;;
 571                 --depth=*)
 572                         depth=$1
 573                         ;;
 574                 -j|--jobs)
 575                         case "$2" in '') usage ;; esac
 576                         jobs="--jobs=$2"
 577                         shift
 578                         ;;
 579                 --jobs=*)
 580                         jobs=$1
 581                         ;;
 582                 --)
 583                         shift
 584                         break
 585                         ;;
 586                 -*)
 587                         usage
 588                         ;;
 589                 *)
 590                         break
 591                         ;;
 592                 esac
 593                 shift
 594         done
 595
 596         if test -n "$init"
 597         then
 598                 cmd_init "--" "$@" || return
 599         fi
 600
 601         {
 602         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 603                 ${progress:+"$progress"} \
 604                 ${wt_prefix:+--prefix "$wt_prefix"} \
 605                 ${prefix:+--recursive-prefix "$prefix"} \
 606                 ${update:+--update "$update"} \
 607                 ${reference:+"$reference"} \
 608                 ${depth:+--depth "$depth"} \
 609                 ${recommend_shallow:+"$recommend_shallow"} \
 610                 ${jobs:+$jobs} \
 611                 "$@" || echo "#unmatched" $?
 612         } | {
 613         err=
 614         while read -r mode sha1 stage just_cloned sm_path
 615         do
 616                 die_if_unmatched "$mode" "$sha1"
 617
 618                 name=$(git submodule--helper name "$sm_path") || exit
 619                 if ! test -z "$update"
 620                 then
 621                         update_module=$update
 622                 else
 623                         update_module=$(git config submodule."$name".update)
 624                         if test -z "$update_module"
 625                         then
 626                                 update_module="checkout"
 627                         fi
 628                 fi
 629
 630                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 631
 632                 if test $just_cloned -eq 1
 633                 then
 634                         subsha1=
 635                         case "$update_module" in
 636                         merge | rebase | none)
 637                                 update_module=checkout ;;
 638                         esac
 639                 else
 640                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 641                                 git rev-parse --verify HEAD) ||
 642                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 643                 fi
 644
 645                 if test -n "$remote"
 646                 then
 647                         branch=$(git submodule--helper remote-branch "$sm_path")
 648                         if test -z "$nofetch"
 649                         then
 650                                 # Fetch remote before determining tracking $sha1
 651                                 fetch_in_submodule "$sm_path" $depth ||
 652                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 653                         fi
 654                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 655                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 656                                 git rev-parse --verify "${remote_name}/${branch}") ||
 657                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 658                 fi
 659
 660                 if test "$subsha1" != "$sha1" || test -n "$force"
 661                 then
 662                         subforce=$force
 663                         # If we don't already have a -f flag and the submodule has never been checked out
 664                         if test -z "$subsha1" && test -z "$force"
 665                         then
 666                                 subforce="-f"
 667                         fi
 668
 669                         if test -z "$nofetch"
 670                         then
 671                                 # Run fetch only if $sha1 isn't present or it
 672                                 # is not reachable from a ref.
 673                                 is_tip_reachable "$sm_path" "$sha1" ||
 674                                 fetch_in_submodule "$sm_path" $depth ||
 675                                 die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 676
 677                                 # Now we tried the usual fetch, but $sha1 may
 678                                 # not be reachable from any of the refs
 679                                 is_tip_reachable "$sm_path" "$sha1" ||
 680                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
 681                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 682                         fi
 683
 684                         must_die_on_failure=
 685                         case "$update_module" in
 686                         checkout)
 687                                 command="git checkout $subforce -q"
 688                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 689                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 690                                 ;;
 691                         rebase)
 692                                 command="git rebase"
 693                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 694                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 695                                 must_die_on_failure=yes
 696                                 ;;
 697                         merge)
 698                                 command="git merge"
 699                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 700                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 701                                 must_die_on_failure=yes
 702                                 ;;
 703                         !*)
 704                                 command="${update_module#!}"
 705                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 706                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 707                                 must_die_on_failure=yes
 708                                 ;;
 709                         *)
 710                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
 711                         esac
 712
 713                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 714                         then
 715                                 say "$say_msg"
 716                         elif test -n "$must_die_on_failure"
 717                         then
 718                                 die_with_status 2 "$die_msg"
 719                         else
 720                                 err="${err};$die_msg"
 721                                 continue
 722                         fi
 723                 fi
 724
 725                 if test -n "$recursive"
 726                 then
 727                         (
 728                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 729                                 wt_prefix=
 730                                 sanitize_submodule_env
 731                                 cd "$sm_path" &&
 732                                 eval cmd_update
 733                         )
 734                         res=$?
 735                         if test $res -gt 0
 736                         then
 737                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 738                                 if test $res -ne 2
 739                                 then
 740                                         err="${err};$die_msg"
 741                                         continue
 742                                 else
 743                                         die_with_status $res "$die_msg"
 744                                 fi
 745                         fi
 746                 fi
 747         done
 748
 749         if test -n "$err"
 750         then
 751                 OIFS=$IFS
 752                 IFS=';'
 753                 for e in $err
 754                 do
 755                         if test -n "$e"
 756                         then
 757                                 echo >&2 "$e"
 758                         fi
 759                 done
 760                 IFS=$OIFS
 761                 exit 1
 762         fi
 763         }
 764 }
 765
 766 set_name_rev () {
 767         revname=$( (
 768                 sanitize_submodule_env
 769                 cd "$1" && {
 770                         git describe "$2" 2>/dev/null ||
 771                         git describe --tags "$2" 2>/dev/null ||
 772                         git describe --contains "$2" 2>/dev/null ||
 773                         git describe --all --always "$2"
 774                 }
 775         ) )
 776         test -z "$revname" || revname=" ($revname)"
 777 }
 778 #
 779 # Show commit summary for submodules in index or working tree
 780 #
 781 # If '--cached' is given, show summary between index and given commit,
 782 # or between working tree and given commit
 783 #
 784 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 785 #
 786 cmd_summary() {
 787         summary_limit=-1
 788         for_status=
 789         diff_cmd=diff-index
 790
 791         # parse $args after "submodule ... summary".
 792         while test $# -ne 0
 793         do
 794                 case "$1" in
 795                 --cached)
 796                         cached="$1"
 797                         ;;
 798                 --files)
 799                         files="$1"
 800                         ;;
 801                 --for-status)
 802                         for_status="$1"
 803                         ;;
 804                 -n|--summary-limit)
 805                         summary_limit="$2"
 806                         isnumber "$summary_limit" || usage
 807                         shift
 808                         ;;
 809                 --summary-limit=*)
 810                         summary_limit="${1#--summary-limit=}"
 811                         isnumber "$summary_limit" || usage
 812                         ;;
 813                 --)
 814                         shift
 815                         break
 816                         ;;
 817                 -*)
 818                         usage
 819                         ;;
 820                 *)
 821                         break
 822                         ;;
 823                 esac
 824                 shift
 825         done
 826
 827         test $summary_limit = 0 && return
 828
 829         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 830         then
 831                 head=$rev
 832                 test $# = 0 || shift
 833         elif test -z "$1" || test "$1" = "HEAD"
 834         then
 835                 # before the first commit: compare with an empty tree
 836                 head=$(git hash-object -w -t tree --stdin </dev/null)
 837                 test -z "$1" || shift
 838         else
 839                 head="HEAD"
 840         fi
 841
 842         if [ -n "$files" ]
 843         then
 844                 test -n "$cached" &&
 845                 die "$(gettext "The --cached option cannot be used with the --files option")"
 846                 diff_cmd=diff-files
 847                 head=
 848         fi
 849
 850         cd_to_toplevel
 851         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 852         # Get modified modules cared by user
 853         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 854                 sane_egrep '^:([0-7]* )?160000' |
 855                 while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
 856                 do
 857                         # Always show modules deleted or type-changed (blob<->module)
 858                         if test "$status" = D || test "$status" = T
 859                         then
 860                                 printf '%s\n' "$sm_path"
 861                                 continue
 862                         fi
 863                         # Respect the ignore setting for --for-status.
 864                         if test -n "$for_status"
 865                         then
 866                                 name=$(git submodule--helper name "$sm_path")
 867                                 ignore_config=$(get_submodule_config "$name" ignore none)
 868                                 test $status != A && test $ignore_config = all && continue
 869                         fi
 870                         # Also show added or modified modules which are checked out
 871                         GIT_DIR="$sm_path/.git" git rev-parse --git-dir >/dev/null 2>&1 &&
 872                         printf '%s\n' "$sm_path"
 873                 done
 874         )
 875
 876         test -z "$modules" && return
 877
 878         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 879         sane_egrep '^:([0-7]* )?160000' |
 880         cut -c2- |
 881         while read -r mod_src mod_dst sha1_src sha1_dst status name
 882         do
 883                 if test -z "$cached" &&
 884                         test $sha1_dst = 0000000000000000000000000000000000000000
 885                 then
 886                         case "$mod_dst" in
 887                         160000)
 888                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 889                                 ;;
 890                         100644 | 100755 | 120000)
 891                                 sha1_dst=$(git hash-object $name)
 892                                 ;;
 893                         000000)
 894                                 ;; # removed
 895                         *)
 896                                 # unexpected type
 897                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 898                                 continue ;;
 899                         esac
 900                 fi
 901                 missing_src=
 902                 missing_dst=
 903
 904                 test $mod_src = 160000 &&
 905                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_src^0 >/dev/null &&
 906                 missing_src=t
 907
 908                 test $mod_dst = 160000 &&
 909                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 910                 missing_dst=t
 911
 912                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 913
 914                 total_commits=
 915                 case "$missing_src,$missing_dst" in
 916                 t,)
 917                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 918                         ;;
 919                 ,t)
 920                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 921                         ;;
 922                 t,t)
 923                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 924                         ;;
 925                 *)
 926                         errmsg=
 927                         total_commits=$(
 928                         if test $mod_src = 160000 && test $mod_dst = 160000
 929                         then
 930                                 range="$sha1_src...$sha1_dst"
 931                         elif test $mod_src = 160000
 932                         then
 933                                 range=$sha1_src
 934                         else
 935                                 range=$sha1_dst
 936                         fi
 937                         GIT_DIR="$name/.git" \
 938                         git rev-list --first-parent $range -- | wc -l
 939                         )
 940                         total_commits=" ($(($total_commits + 0)))"
 941                         ;;
 942                 esac
 943
 944                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 945                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 946                 if test $status = T
 947                 then
 948                         blob="$(gettext "blob")"
 949                         submodule="$(gettext "submodule")"
 950                         if test $mod_dst = 160000
 951                         then
 952                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 953                         else
 954                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 955                         fi
 956                 else
 957                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 958                 fi
 959                 if test -n "$errmsg"
 960                 then
 961                         # Don't give error msg for modification whose dst is not submodule
 962                         # i.e. deleted or changed to blob
 963                         test $mod_dst = 160000 && echo "$errmsg"
 964                 else
 965                         if test $mod_src = 160000 && test $mod_dst = 160000
 966                         then
 967                                 limit=
 968                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 969                                 GIT_DIR="$name/.git" \
 970                                 git log $limit --pretty='format:  %m %s' \
 971                                 --first-parent $sha1_src...$sha1_dst
 972                         elif test $mod_dst = 160000
 973                         then
 974                                 GIT_DIR="$name/.git" \
 975                                 git log --pretty='format:  > %s' -1 $sha1_dst
 976                         else
 977                                 GIT_DIR="$name/.git" \
 978                                 git log --pretty='format:  < %s' -1 $sha1_src
 979                         fi
 980                         echo
 981                 fi
 982                 echo
 983         done
 984 }
 985 #
 986 # List all submodules, prefixed with:
 987 #  - submodule not initialized
 988 #  + different revision checked out
 989 #
 990 # If --cached was specified the revision in the index will be printed
 991 # instead of the currently checked out revision.
 992 #
 993 # $@ = requested paths (default to all)
 994 #
 995 cmd_status()
 996 {
 997         # parse $args after "submodule ... status".
 998         while test $# -ne 0
 999         do
1000                 case "$1" in
1001                 -q|--quiet)
1002                         GIT_QUIET=1
1003                         ;;
1004                 --cached)
1005                         cached=1
1006                         ;;
1007                 --recursive)
1008                         recursive=1
1009                         ;;
1010                 --)
1011                         shift
1012                         break
1013                         ;;
1014                 -*)
1015                         usage
1016                         ;;
1017                 *)
1018                         break
1019                         ;;
1020                 esac
1021                 shift
1022         done
1023
1024         {
1025                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1026                 echo "#unmatched" $?
1027         } |
1028         while read -r mode sha1 stage sm_path
1029         do
1030                 die_if_unmatched "$mode" "$sha1"
1031                 name=$(git submodule--helper name "$sm_path") || exit
1032                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1033                 if test "$stage" = U
1034                 then
1035                         say "U$sha1 $displaypath"
1036                         continue
1037                 fi
1038                 if ! git submodule--helper is-active "$sm_path" ||
1039                 {
1040                         ! test -d "$sm_path"/.git &&
1041                         ! test -f "$sm_path"/.git
1042                 }
1043                 then
1044                         say "-$sha1 $displaypath"
1045                         continue;
1046                 fi
1047                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1048                 then
1049                         set_name_rev "$sm_path" "$sha1"
1050                         say " $sha1 $displaypath$revname"
1051                 else
1052                         if test -z "$cached"
1053                         then
1054                                 sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1055                         fi
1056                         set_name_rev "$sm_path" "$sha1"
1057                         say "+$sha1 $displaypath$revname"
1058                 fi
1059
1060                 if test -n "$recursive"
1061                 then
1062                         (
1063                                 prefix="$displaypath/"
1064                                 sanitize_submodule_env
1065                                 wt_prefix=
1066                                 cd "$sm_path" &&
1067                                 eval cmd_status
1068                         ) ||
1069                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1070                 fi
1071         done
1072 }
1073 #
1074 # Sync remote urls for submodules
1075 # This makes the value for remote.$remote.url match the value
1076 # specified in .gitmodules.
1077 #
1078 cmd_sync()
1079 {
1080         while test $# -ne 0
1081         do
1082                 case "$1" in
1083                 -q|--quiet)
1084                         GIT_QUIET=1
1085                         shift
1086                         ;;
1087                 --recursive)
1088                         recursive=1
1089                         shift
1090                         ;;
1091                 --)
1092                         shift
1093                         break
1094                         ;;
1095                 -*)
1096                         usage
1097                         ;;
1098                 *)
1099                         break
1100                         ;;
1101                 esac
1102         done
1103         cd_to_toplevel
1104         {
1105                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1106                 echo "#unmatched" $?
1107         } |
1108         while read -r mode sha1 stage sm_path
1109         do
1110                 die_if_unmatched "$mode" "$sha1"
1111
1112                 # skip inactive submodules
1113                 if ! git submodule--helper is-active "$sm_path"
1114                 then
1115                         continue
1116                 fi
1117
1118                 name=$(git submodule--helper name "$sm_path")
1119                 url=$(git config -f .gitmodules --get submodule."$name".url)
1120
1121                 # Possibly a url relative to parent
1122                 case "$url" in
1123                 ./*|../*)
1124                         # rewrite foo/bar as ../.. to find path from
1125                         # submodule work tree to superproject work tree
1126                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1127                         # guarantee a trailing /
1128                         up_path=${up_path%/}/ &&
1129                         # path from submodule work tree to submodule origin repo
1130                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1131                         # path from superproject work tree to submodule origin repo
1132                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1133                         ;;
1134                 *)
1135                         sub_origin_url="$url"
1136                         super_config_url="$url"
1137                         ;;
1138                 esac
1139
1140                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1141                 say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1142                 git config submodule."$name".url "$super_config_url"
1143
1144                 if test -e "$sm_path"/.git
1145                 then
1146                 (
1147                         sanitize_submodule_env
1148                         cd "$sm_path"
1149                         remote=$(get_default_remote)
1150                         git config remote."$remote".url "$sub_origin_url"
1151
1152                         if test -n "$recursive"
1153                         then
1154                                 prefix="$prefix$sm_path/"
1155                                 eval cmd_sync
1156                         fi
1157                 )
1158                 fi
1159         done
1160 }
1161
1162 cmd_absorbgitdirs()
1163 {
1164         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1165 }
1166
1167 # This loop parses the command line arguments to find the
1168 # subcommand name to dispatch.  Parsing of the subcommand specific
1169 # options are primarily done by the subcommand implementations.
1170 # Subcommand specific options such as --branch and --cached are
1171 # parsed here as well, for backward compatibility.
1172
1173 while test $# != 0 && test -z "$command"
1174 do
1175         case "$1" in
1176         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1177                 command=$1
1178                 ;;
1179         -q|--quiet)
1180                 GIT_QUIET=1
1181                 ;;
1182         -b|--branch)
1183                 case "$2" in
1184                 '')
1185                         usage
1186                         ;;
1187                 esac
1188                 branch="$2"; shift
1189                 ;;
1190         --cached)
1191                 cached="$1"
1192                 ;;
1193         --)
1194                 break
1195                 ;;
1196         -*)
1197                 usage
1198                 ;;
1199         *)
1200                 break
1201                 ;;
1202         esac
1203         shift
1204 done
1205
1206 # No command word defaults to "status"
1207 if test -z "$command"
1208 then
1209     if test $# = 0
1210     then
1211         command=status
1212     else
1213         usage
1214     fi
1215 fi
1216
1217 # "-b branch" is accepted only by "add"
1218 if test -n "$branch" && test "$command" != add
1219 then
1220         usage
1221 fi
1222
1223 # "--cached" is accepted only by "status" and "summary"
1224 if test -n "$cached" && test "$command" != status && test "$command" != summary
1225 then
1226         usage
1227 fi
1228
1229 "cmd_$command" "$@"