git.oblomov.eu Git - git/blob - 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] [--cached]
   9    or: $dashless [--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
  10    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  11    or: $dashless [--quiet] init [--] [<path>...]
  12    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  13    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--[no-]single-branch] [--] [<path>...]
  14    or: $dashless [--quiet] set-branch (--default|--branch <branch>) [--] <path>
  15    or: $dashless [--quiet] set-url [--] <path> <newurl>
  16    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  17    or: $dashless [--quiet] foreach [--recursive] <command>
  18    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  19    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  20 OPTIONS_SPEC=
  21 SUBDIRECTORY_OK=Yes
  22 . git-sh-setup
  23 require_work_tree
  24 wt_prefix=$(git rev-parse --show-prefix)
  25 cd_to_toplevel
  26
  27 # Tell the rest of git that any URLs we get don't come
  28 # directly from the user, so it can apply policy as appropriate.
  29 GIT_PROTOCOL_FROM_USER=0
  30 export GIT_PROTOCOL_FROM_USER
  31
  32 command=
  33 branch=
  34 force=
  35 reference=
  36 cached=
  37 recursive=
  38 init=
  39 require_init=
  40 files=
  41 remote=
  42 nofetch=
  43 update=
  44 prefix=
  45 custom_name=
  46 depth=
  47 progress=
  48 dissociate=
  49 single_branch=
  50 jobs=
  51 recommend_shallow=
  52
  53 die_if_unmatched ()
  54 {
  55         if test "$1" = "#unmatched"
  56         then
  57                 exit ${2:-1}
  58         fi
  59 }
  60
  61 isnumber()
  62 {
  63         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  64 }
  65
  66 # Given a full hex object ID, is this the zero OID?
  67 is_zero_oid () {
  68         echo "$1" | sane_egrep '^0+$' >/dev/null 2>&1
  69 }
  70
  71 # Sanitize the local git environment for use within a submodule. We
  72 # can't simply use clear_local_git_env since we want to preserve some
  73 # of the settings from GIT_CONFIG_PARAMETERS.
  74 sanitize_submodule_env()
  75 {
  76         save_config=$GIT_CONFIG_PARAMETERS
  77         clear_local_git_env
  78         GIT_CONFIG_PARAMETERS=$save_config
  79         export GIT_CONFIG_PARAMETERS
  80 }
  81
  82 #
  83 # Add a new submodule to the working tree, .gitmodules and the index
  84 #
  85 # $@ = repo path
  86 #
  87 # optional branch is stored in global branch variable
  88 #
  89 cmd_add()
  90 {
  91         # parse $args after "submodule ... add".
  92         reference_path=
  93         while test $# -ne 0
  94         do
  95                 case "$1" in
  96                 -b | --branch)
  97                         case "$2" in '') usage ;; esac
  98                         branch=$2
  99                         shift
 100                         ;;
 101                 -f | --force)
 102                         force=$1
 103                         ;;
 104                 -q|--quiet)
 105                         GIT_QUIET=1
 106                         ;;
 107                 --progress)
 108                         progress=1
 109                         ;;
 110                 --reference)
 111                         case "$2" in '') usage ;; esac
 112                         reference_path=$2
 113                         shift
 114                         ;;
 115                 --reference=*)
 116                         reference_path="${1#--reference=}"
 117                         ;;
 118                 --dissociate)
 119                         dissociate=1
 120                         ;;
 121                 --name)
 122                         case "$2" in '') usage ;; esac
 123                         custom_name=$2
 124                         shift
 125                         ;;
 126                 --depth)
 127                         case "$2" in '') usage ;; esac
 128                         depth="--depth=$2"
 129                         shift
 130                         ;;
 131                 --depth=*)
 132                         depth=$1
 133                         ;;
 134                 --)
 135                         shift
 136                         break
 137                         ;;
 138                 -*)
 139                         usage
 140                         ;;
 141                 *)
 142                         break
 143                         ;;
 144                 esac
 145                 shift
 146         done
 147
 148         if ! git submodule--helper config --check-writeable >/dev/null 2>&1
 149         then
 150                  die "$(eval_gettext "please make sure that the .gitmodules file is in the working tree")"
 151         fi
 152
 153         if test -n "$reference_path"
 154         then
 155                 is_absolute_path "$reference_path" ||
 156                 reference_path="$wt_prefix$reference_path"
 157
 158                 reference="--reference=$reference_path"
 159         fi
 160
 161         repo=$1
 162         sm_path=$2
 163
 164         if test -z "$sm_path"; then
 165                 sm_path=$(printf '%s\n' "$repo" |
 166                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 167         fi
 168
 169         if test -z "$repo" || test -z "$sm_path"; then
 170                 usage
 171         fi
 172
 173         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 174
 175         # assure repo is absolute or relative to parent
 176         case "$repo" in
 177         ./*|../*)
 178                 test -z "$wt_prefix" ||
 179                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 180
 181                 # dereference source url relative to parent's url
 182                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 183                 ;;
 184         *:*|/*)
 185                 # absolute url
 186                 realrepo=$repo
 187                 ;;
 188         *)
 189                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 190         ;;
 191         esac
 192
 193         # normalize path:
 194         # multiple //; leading ./; /./; /../; trailing /
 195         sm_path=$(printf '%s/\n' "$sm_path" |
 196                 sed -e '
 197                         s|//*|/|g
 198                         s|^\(\./\)*||
 199                         s|/\(\./\)*|/|g
 200                         :start
 201                         s|\([^/]*\)/\.\./||
 202                         tstart
 203                         s|/*$||
 204                 ')
 205         if test -z "$force"
 206         then
 207                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 208                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
 209         else
 210                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 211                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 212         fi
 213
 214         if test -d "$sm_path" &&
 215                 test -z $(git -C "$sm_path" rev-parse --show-cdup 2>/dev/null)
 216         then
 217             git -C "$sm_path" rev-parse --verify -q HEAD >/dev/null ||
 218             die "$(eval_gettext "'\$sm_path' does not have a commit checked out")"
 219         fi
 220
 221         if test -z "$force"
 222         then
 223             dryerr=$(git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" 2>&1 >/dev/null)
 224             res=$?
 225             if test $res -ne 0
 226             then
 227                  echo >&2 "$dryerr"
 228                  exit $res
 229             fi
 230         fi
 231
 232         if test -n "$custom_name"
 233         then
 234                 sm_name="$custom_name"
 235         else
 236                 sm_name="$sm_path"
 237         fi
 238
 239         if ! git submodule--helper check-name "$sm_name"
 240         then
 241                 die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
 242         fi
 243
 244         git submodule--helper add-clone ${GIT_QUIET:+--quiet} ${force:+"--force"} ${progress:+"--progress"} ${branch:+--branch "$branch"} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${dissociate:+"--dissociate"} ${depth:+"$depth"} || exit
 245         git submodule--helper add-config ${force:+--force} ${branch:+--branch "$branch"} --url "$repo" --resolved-url "$realrepo" --path "$sm_path" --name "$sm_name"
 246 }
 247
 248 #
 249 # Execute an arbitrary command sequence in each checked out
 250 # submodule
 251 #
 252 # $@ = command to execute
 253 #
 254 cmd_foreach()
 255 {
 256         # parse $args after "submodule ... foreach".
 257         while test $# -ne 0
 258         do
 259                 case "$1" in
 260                 -q|--quiet)
 261                         GIT_QUIET=1
 262                         ;;
 263                 --recursive)
 264                         recursive=1
 265                         ;;
 266                 -*)
 267                         usage
 268                         ;;
 269                 *)
 270                         break
 271                         ;;
 272                 esac
 273                 shift
 274         done
 275
 276         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 277 }
 278
 279 #
 280 # Register submodules in .git/config
 281 #
 282 # $@ = requested paths (default to all)
 283 #
 284 cmd_init()
 285 {
 286         # parse $args after "submodule ... init".
 287         while test $# -ne 0
 288         do
 289                 case "$1" in
 290                 -q|--quiet)
 291                         GIT_QUIET=1
 292                         ;;
 293                 --)
 294                         shift
 295                         break
 296                         ;;
 297                 -*)
 298                         usage
 299                         ;;
 300                 *)
 301                         break
 302                         ;;
 303                 esac
 304                 shift
 305         done
 306
 307         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
 308 }
 309
 310 #
 311 # Unregister submodules from .git/config and remove their work tree
 312 #
 313 cmd_deinit()
 314 {
 315         # parse $args after "submodule ... deinit".
 316         deinit_all=
 317         while test $# -ne 0
 318         do
 319                 case "$1" in
 320                 -f|--force)
 321                         force=$1
 322                         ;;
 323                 -q|--quiet)
 324                         GIT_QUIET=1
 325                         ;;
 326                 --all)
 327                         deinit_all=t
 328                         ;;
 329                 --)
 330                         shift
 331                         break
 332                         ;;
 333                 -*)
 334                         usage
 335                         ;;
 336                 *)
 337                         break
 338                         ;;
 339                 esac
 340                 shift
 341         done
 342
 343         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} -- "$@"
 344 }
 345
 346 is_tip_reachable () (
 347         sanitize_submodule_env &&
 348         cd "$1" &&
 349         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 350         test -z "$rev"
 351 )
 352
 353 # usage: fetch_in_submodule <module_path> [<depth>] [<sha1>]
 354 # Because arguments are positional, use an empty string to omit <depth>
 355 # but include <sha1>.
 356 fetch_in_submodule () (
 357         sanitize_submodule_env &&
 358         cd "$1" &&
 359         if test $# -eq 3
 360         then
 361                 echo "$3" | git fetch ${GIT_QUIET:+--quiet} --stdin ${2:+"$2"}
 362         else
 363                 git fetch ${GIT_QUIET:+--quiet} ${2:+"$2"}
 364         fi
 365 )
 366
 367 #
 368 # Update each submodule path to correct revision, using clone and checkout as needed
 369 #
 370 # $@ = requested paths (default to all)
 371 #
 372 cmd_update()
 373 {
 374         # parse $args after "submodule ... update".
 375         while test $# -ne 0
 376         do
 377                 case "$1" in
 378                 -q|--quiet)
 379                         GIT_QUIET=1
 380                         ;;
 381                 -v)
 382                         unset GIT_QUIET
 383                         ;;
 384                 --progress)
 385                         progress=1
 386                         ;;
 387                 -i|--init)
 388                         init=1
 389                         ;;
 390                 --require-init)
 391                         init=1
 392                         require_init=1
 393                         ;;
 394                 --remote)
 395                         remote=1
 396                         ;;
 397                 -N|--no-fetch)
 398                         nofetch=1
 399                         ;;
 400                 -f|--force)
 401                         force=$1
 402                         ;;
 403                 -r|--rebase)
 404                         update="rebase"
 405                         ;;
 406                 --reference)
 407                         case "$2" in '') usage ;; esac
 408                         reference="--reference=$2"
 409                         shift
 410                         ;;
 411                 --reference=*)
 412                         reference="$1"
 413                         ;;
 414                 --dissociate)
 415                         dissociate=1
 416                         ;;
 417                 -m|--merge)
 418                         update="merge"
 419                         ;;
 420                 --recursive)
 421                         recursive=1
 422                         ;;
 423                 --checkout)
 424                         update="checkout"
 425                         ;;
 426                 --recommend-shallow)
 427                         recommend_shallow="--recommend-shallow"
 428                         ;;
 429                 --no-recommend-shallow)
 430                         recommend_shallow="--no-recommend-shallow"
 431                         ;;
 432                 --depth)
 433                         case "$2" in '') usage ;; esac
 434                         depth="--depth=$2"
 435                         shift
 436                         ;;
 437                 --depth=*)
 438                         depth=$1
 439                         ;;
 440                 -j|--jobs)
 441                         case "$2" in '') usage ;; esac
 442                         jobs="--jobs=$2"
 443                         shift
 444                         ;;
 445                 --jobs=*)
 446                         jobs=$1
 447                         ;;
 448                 --single-branch)
 449                         single_branch="--single-branch"
 450                         ;;
 451                 --no-single-branch)
 452                         single_branch="--no-single-branch"
 453                         ;;
 454                 --)
 455                         shift
 456                         break
 457                         ;;
 458                 -*)
 459                         usage
 460                         ;;
 461                 *)
 462                         break
 463                         ;;
 464                 esac
 465                 shift
 466         done
 467
 468         if test -n "$init"
 469         then
 470                 cmd_init "--" "$@" || return
 471         fi
 472
 473         {
 474         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 475                 ${progress:+"--progress"} \
 476                 ${wt_prefix:+--prefix "$wt_prefix"} \
 477                 ${prefix:+--recursive-prefix "$prefix"} \
 478                 ${update:+--update "$update"} \
 479                 ${reference:+"$reference"} \
 480                 ${dissociate:+"--dissociate"} \
 481                 ${depth:+--depth "$depth"} \
 482                 ${require_init:+--require-init} \
 483                 $single_branch \
 484                 $recommend_shallow \
 485                 $jobs \
 486                 -- \
 487                 "$@" || echo "#unmatched" $?
 488         } | {
 489         err=
 490         while read -r quickabort sha1 just_cloned sm_path
 491         do
 492                 die_if_unmatched "$quickabort" "$sha1"
 493
 494                 git submodule--helper ensure-core-worktree "$sm_path" || exit 1
 495
 496                 update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
 497
 498                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 499
 500                 if test $just_cloned -eq 1
 501                 then
 502                         subsha1=
 503                 else
 504                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 505                                 git rev-parse --verify HEAD) ||
 506                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 507                 fi
 508
 509                 if test -n "$remote"
 510                 then
 511                         branch=$(git submodule--helper remote-branch "$sm_path")
 512                         if test -z "$nofetch"
 513                         then
 514                                 # Fetch remote before determining tracking $sha1
 515                                 fetch_in_submodule "$sm_path" $depth ||
 516                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 517                         fi
 518                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && git submodule--helper print-default-remote)
 519                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 520                                 git rev-parse --verify "${remote_name}/${branch}") ||
 521                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 522                 fi
 523
 524                 if test "$subsha1" != "$sha1" || test -n "$force"
 525                 then
 526                         subforce=$force
 527                         # If we don't already have a -f flag and the submodule has never been checked out
 528                         if test -z "$subsha1" && test -z "$force"
 529                         then
 530                                 subforce="-f"
 531                         fi
 532
 533                         if test -z "$nofetch"
 534                         then
 535                                 # Run fetch only if $sha1 isn't present or it
 536                                 # is not reachable from a ref.
 537                                 is_tip_reachable "$sm_path" "$sha1" ||
 538                                 fetch_in_submodule "$sm_path" $depth ||
 539                                 say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'; trying to directly fetch \$sha1:")"
 540
 541                                 # Now we tried the usual fetch, but $sha1 may
 542                                 # not be reachable from any of the refs
 543                                 is_tip_reachable "$sm_path" "$sha1" ||
 544                                 fetch_in_submodule "$sm_path" "$depth" "$sha1" ||
 545                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 546                         fi
 547
 548                         must_die_on_failure=
 549                         case "$update_module" in
 550                         checkout)
 551                                 command="git checkout $subforce -q"
 552                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 553                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 554                                 ;;
 555                         rebase)
 556                                 command="git rebase ${GIT_QUIET:+--quiet}"
 557                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 558                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 559                                 must_die_on_failure=yes
 560                                 ;;
 561                         merge)
 562                                 command="git merge ${GIT_QUIET:+--quiet}"
 563                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 564                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 565                                 must_die_on_failure=yes
 566                                 ;;
 567                         !*)
 568                                 command="${update_module#!}"
 569                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 570                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 571                                 must_die_on_failure=yes
 572                                 ;;
 573                         *)
 574                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
 575                         esac
 576
 577                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 578                         then
 579                                 say "$say_msg"
 580                         elif test -n "$must_die_on_failure"
 581                         then
 582                                 die_with_status 2 "$die_msg"
 583                         else
 584                                 err="${err};$die_msg"
 585                                 continue
 586                         fi
 587                 fi
 588
 589                 # Cache a pointer to the superproject's gitdir. This may have
 590                 # changed, so rewrite it unconditionally. Writes it to worktree
 591                 # if applicable, otherwise to local.
 592                 relative_gitdir="$(git rev-parse --path-format=relative \
 593                                                  --prefix "${sm_path}" \
 594                                                  --git-dir)"
 595
 596                 git -C "$sm_path" config --worktree \
 597                         submodule.superprojectgitdir "$relative_gitdir"
 598
 599                 if test -n "$recursive"
 600                 then
 601                         (
 602                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 603                                 wt_prefix=
 604                                 sanitize_submodule_env
 605                                 cd "$sm_path" &&
 606                                 eval cmd_update
 607                         )
 608                         res=$?
 609                         if test $res -gt 0
 610                         then
 611                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 612                                 if test $res -ne 2
 613                                 then
 614                                         err="${err};$die_msg"
 615                                         continue
 616                                 else
 617                                         die_with_status $res "$die_msg"
 618                                 fi
 619                         fi
 620                 fi
 621         done
 622
 623         if test -n "$err"
 624         then
 625                 OIFS=$IFS
 626                 IFS=';'
 627                 for e in $err
 628                 do
 629                         if test -n "$e"
 630                         then
 631                                 echo >&2 "$e"
 632                         fi
 633                 done
 634                 IFS=$OIFS
 635                 exit 1
 636         fi
 637         }
 638 }
 639
 640 #
 641 # Configures a submodule's default branch
 642 #
 643 # $@ = requested path
 644 #
 645 cmd_set_branch() {
 646         default=
 647         branch=
 648
 649         while test $# -ne 0
 650         do
 651                 case "$1" in
 652                 -q|--quiet)
 653                         # we don't do anything with this but we need to accept it
 654                         ;;
 655                 -d|--default)
 656                         default=1
 657                         ;;
 658                 -b|--branch)
 659                         case "$2" in '') usage ;; esac
 660                         branch=$2
 661                         shift
 662                         ;;
 663                 --)
 664                         shift
 665                         break
 666                         ;;
 667                 -*)
 668                         usage
 669                         ;;
 670                 *)
 671                         break
 672                         ;;
 673                 esac
 674                 shift
 675         done
 676
 677         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-branch ${GIT_QUIET:+--quiet} ${branch:+--branch "$branch"} ${default:+--default} -- "$@"
 678 }
 679
 680 #
 681 # Configures a submodule's remote url
 682 #
 683 # $@ = requested path, requested url
 684 #
 685 cmd_set_url() {
 686         while test $# -ne 0
 687         do
 688                 case "$1" in
 689                 -q|--quiet)
 690                         GIT_QUIET=1
 691                         ;;
 692                 --)
 693                         shift
 694                         break
 695                         ;;
 696                 -*)
 697                         usage
 698                         ;;
 699                 *)
 700                         break
 701                         ;;
 702                 esac
 703                 shift
 704         done
 705
 706         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-url ${GIT_QUIET:+--quiet} -- "$@"
 707 }
 708
 709 #
 710 # Show commit summary for submodules in index or working tree
 711 #
 712 # If '--cached' is given, show summary between index and given commit,
 713 # or between working tree and given commit
 714 #
 715 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 716 #
 717 cmd_summary() {
 718         summary_limit=-1
 719         for_status=
 720         diff_cmd=diff-index
 721
 722         # parse $args after "submodule ... summary".
 723         while test $# -ne 0
 724         do
 725                 case "$1" in
 726                 --cached)
 727                         cached="$1"
 728                         ;;
 729                 --files)
 730                         files="$1"
 731                         ;;
 732                 --for-status)
 733                         for_status="$1"
 734                         ;;
 735                 -n|--summary-limit)
 736                         summary_limit="$2"
 737                         isnumber "$summary_limit" || usage
 738                         shift
 739                         ;;
 740                 --summary-limit=*)
 741                         summary_limit="${1#--summary-limit=}"
 742                         isnumber "$summary_limit" || usage
 743                         ;;
 744                 --)
 745                         shift
 746                         break
 747                         ;;
 748                 -*)
 749                         usage
 750                         ;;
 751                 *)
 752                         break
 753                         ;;
 754                 esac
 755                 shift
 756         done
 757
 758         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper summary ${prefix:+--prefix "$prefix"} ${files:+--files} ${cached:+--cached} ${for_status:+--for-status} ${summary_limit:+-n $summary_limit} -- "$@"
 759 }
 760 #
 761 # List all submodules, prefixed with:
 762 #  - submodule not initialized
 763 #  + different revision checked out
 764 #
 765 # If --cached was specified the revision in the index will be printed
 766 # instead of the currently checked out revision.
 767 #
 768 # $@ = requested paths (default to all)
 769 #
 770 cmd_status()
 771 {
 772         # parse $args after "submodule ... status".
 773         while test $# -ne 0
 774         do
 775                 case "$1" in
 776                 -q|--quiet)
 777                         GIT_QUIET=1
 778                         ;;
 779                 --cached)
 780                         cached=1
 781                         ;;
 782                 --recursive)
 783                         recursive=1
 784                         ;;
 785                 --)
 786                         shift
 787                         break
 788                         ;;
 789                 -*)
 790                         usage
 791                         ;;
 792                 *)
 793                         break
 794                         ;;
 795                 esac
 796                 shift
 797         done
 798
 799         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} -- "$@"
 800 }
 801 #
 802 # Sync remote urls for submodules
 803 # This makes the value for remote.$remote.url match the value
 804 # specified in .gitmodules.
 805 #
 806 cmd_sync()
 807 {
 808         while test $# -ne 0
 809         do
 810                 case "$1" in
 811                 -q|--quiet)
 812                         GIT_QUIET=1
 813                         shift
 814                         ;;
 815                 --recursive)
 816                         recursive=1
 817                         shift
 818                         ;;
 819                 --)
 820                         shift
 821                         break
 822                         ;;
 823                 -*)
 824                         usage
 825                         ;;
 826                 *)
 827                         break
 828                         ;;
 829                 esac
 830         done
 831
 832         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 833 }
 834
 835 cmd_absorbgitdirs()
 836 {
 837         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
 838 }
 839
 840 # This loop parses the command line arguments to find the
 841 # subcommand name to dispatch.  Parsing of the subcommand specific
 842 # options are primarily done by the subcommand implementations.
 843 # Subcommand specific options such as --branch and --cached are
 844 # parsed here as well, for backward compatibility.
 845
 846 while test $# != 0 && test -z "$command"
 847 do
 848         case "$1" in
 849         add | foreach | init | deinit | update | set-branch | set-url | status | summary | sync | absorbgitdirs)
 850                 command=$1
 851                 ;;
 852         -q|--quiet)
 853                 GIT_QUIET=1
 854                 ;;
 855         -b|--branch)
 856                 case "$2" in
 857                 '')
 858                         usage
 859                         ;;
 860                 esac
 861                 branch="$2"; shift
 862                 ;;
 863         --cached)
 864                 cached="$1"
 865                 ;;
 866         --)
 867                 break
 868                 ;;
 869         -*)
 870                 usage
 871                 ;;
 872         *)
 873                 break
 874                 ;;
 875         esac
 876         shift
 877 done
 878
 879 # No command word defaults to "status"
 880 if test -z "$command"
 881 then
 882     if test $# = 0
 883     then
 884         command=status
 885     else
 886         usage
 887     fi
 888 fi
 889
 890 # "-b branch" is accepted only by "add" and "set-branch"
 891 if test -n "$branch" && (test "$command" != add || test "$command" != set-branch)
 892 then
 893         usage
 894 fi
 895
 896 # "--cached" is accepted only by "status" and "summary"
 897 if test -n "$cached" && test "$command" != status && test "$command" != summary
 898 then
 899         usage
 900 fi
 901
 902 "cmd_$(echo $command | sed -e s/-/_/g)" "$@"