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 "'$sm_name' is not a valid submodule name")"
 242         fi
 243
 244         # perhaps the path exists and is already a git repo, else clone it
 245         if test -e "$sm_path"
 246         then
 247                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 248                 then
 249                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 250                 else
 251                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 252                 fi
 253
 254         else
 255                 if test -d ".git/modules/$sm_name"
 256                 then
 257                         if test -z "$force"
 258                         then
 259                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 260                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 261                                 die "$(eval_gettextln "\
 262 If you want to reuse this local git directory instead of cloning again from
 263   \$realrepo
 264 use the '--force' option. If the local git directory is not the correct repo
 265 or you are unsure what this means choose another name with the '--name' option.")"
 266                         else
 267                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 268                         fi
 269                 fi
 270                 git submodule--helper clone ${GIT_QUIET:+--quiet} ${progress:+"--progress"} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${dissociate:+"--dissociate"} ${depth:+"$depth"} || exit
 271                 (
 272                         sanitize_submodule_env
 273                         cd "$sm_path" &&
 274                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 275                         case "$branch" in
 276                         '') git checkout -f -q ;;
 277                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 278                         esac
 279                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 280         fi
 281         git config submodule."$sm_name".url "$realrepo"
 282
 283         git add --no-warn-embedded-repo $force "$sm_path" ||
 284         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 285
 286         git submodule--helper config submodule."$sm_name".path "$sm_path" &&
 287         git submodule--helper config submodule."$sm_name".url "$repo" &&
 288         if test -n "$branch"
 289         then
 290                 git submodule--helper config submodule."$sm_name".branch "$branch"
 291         fi &&
 292         git add --force .gitmodules ||
 293         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 294
 295         # NEEDSWORK: In a multi-working-tree world, this needs to be
 296         # set in the per-worktree config.
 297         if git config --get submodule.active >/dev/null
 298         then
 299                 # If the submodule being adding isn't already covered by the
 300                 # current configured pathspec, set the submodule's active flag
 301                 if ! git submodule--helper is-active "$sm_path"
 302                 then
 303                         git config submodule."$sm_name".active "true"
 304                 fi
 305         else
 306                 git config submodule."$sm_name".active "true"
 307         fi
 308 }
 309
 310 #
 311 # Execute an arbitrary command sequence in each checked out
 312 # submodule
 313 #
 314 # $@ = command to execute
 315 #
 316 cmd_foreach()
 317 {
 318         # parse $args after "submodule ... foreach".
 319         while test $# -ne 0
 320         do
 321                 case "$1" in
 322                 -q|--quiet)
 323                         GIT_QUIET=1
 324                         ;;
 325                 --recursive)
 326                         recursive=1
 327                         ;;
 328                 -*)
 329                         usage
 330                         ;;
 331                 *)
 332                         break
 333                         ;;
 334                 esac
 335                 shift
 336         done
 337
 338         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 339 }
 340
 341 #
 342 # Register submodules in .git/config
 343 #
 344 # $@ = requested paths (default to all)
 345 #
 346 cmd_init()
 347 {
 348         # parse $args after "submodule ... init".
 349         while test $# -ne 0
 350         do
 351                 case "$1" in
 352                 -q|--quiet)
 353                         GIT_QUIET=1
 354                         ;;
 355                 --)
 356                         shift
 357                         break
 358                         ;;
 359                 -*)
 360                         usage
 361                         ;;
 362                 *)
 363                         break
 364                         ;;
 365                 esac
 366                 shift
 367         done
 368
 369         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
 370 }
 371
 372 #
 373 # Unregister submodules from .git/config and remove their work tree
 374 #
 375 cmd_deinit()
 376 {
 377         # parse $args after "submodule ... deinit".
 378         deinit_all=
 379         while test $# -ne 0
 380         do
 381                 case "$1" in
 382                 -f|--force)
 383                         force=$1
 384                         ;;
 385                 -q|--quiet)
 386                         GIT_QUIET=1
 387                         ;;
 388                 --all)
 389                         deinit_all=t
 390                         ;;
 391                 --)
 392                         shift
 393                         break
 394                         ;;
 395                 -*)
 396                         usage
 397                         ;;
 398                 *)
 399                         break
 400                         ;;
 401                 esac
 402                 shift
 403         done
 404
 405         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} -- "$@"
 406 }
 407
 408 is_tip_reachable () (
 409         sanitize_submodule_env &&
 410         cd "$1" &&
 411         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 412         test -z "$rev"
 413 )
 414
 415 # usage: fetch_in_submodule <module_path> [<depth>] [<sha1>]
 416 # Because arguments are positional, use an empty string to omit <depth>
 417 # but include <sha1>.
 418 fetch_in_submodule () (
 419         sanitize_submodule_env &&
 420         cd "$1" &&
 421         if test $# -eq 3
 422         then
 423                 echo "$3" | git fetch --stdin ${2:+"$2"}
 424         else
 425                 git fetch ${2:+"$2"}
 426         fi
 427 )
 428
 429 #
 430 # Update each submodule path to correct revision, using clone and checkout as needed
 431 #
 432 # $@ = requested paths (default to all)
 433 #
 434 cmd_update()
 435 {
 436         # parse $args after "submodule ... update".
 437         while test $# -ne 0
 438         do
 439                 case "$1" in
 440                 -q|--quiet)
 441                         GIT_QUIET=1
 442                         ;;
 443                 -v)
 444                         unset GIT_QUIET
 445                         ;;
 446                 --progress)
 447                         progress=1
 448                         ;;
 449                 -i|--init)
 450                         init=1
 451                         ;;
 452                 --require-init)
 453                         init=1
 454                         require_init=1
 455                         ;;
 456                 --remote)
 457                         remote=1
 458                         ;;
 459                 -N|--no-fetch)
 460                         nofetch=1
 461                         ;;
 462                 -f|--force)
 463                         force=$1
 464                         ;;
 465                 -r|--rebase)
 466                         update="rebase"
 467                         ;;
 468                 --reference)
 469                         case "$2" in '') usage ;; esac
 470                         reference="--reference=$2"
 471                         shift
 472                         ;;
 473                 --reference=*)
 474                         reference="$1"
 475                         ;;
 476                 --dissociate)
 477                         dissociate=1
 478                         ;;
 479                 -m|--merge)
 480                         update="merge"
 481                         ;;
 482                 --recursive)
 483                         recursive=1
 484                         ;;
 485                 --checkout)
 486                         update="checkout"
 487                         ;;
 488                 --recommend-shallow)
 489                         recommend_shallow="--recommend-shallow"
 490                         ;;
 491                 --no-recommend-shallow)
 492                         recommend_shallow="--no-recommend-shallow"
 493                         ;;
 494                 --depth)
 495                         case "$2" in '') usage ;; esac
 496                         depth="--depth=$2"
 497                         shift
 498                         ;;
 499                 --depth=*)
 500                         depth=$1
 501                         ;;
 502                 -j|--jobs)
 503                         case "$2" in '') usage ;; esac
 504                         jobs="--jobs=$2"
 505                         shift
 506                         ;;
 507                 --jobs=*)
 508                         jobs=$1
 509                         ;;
 510                 --single-branch)
 511                         single_branch="--single-branch"
 512                         ;;
 513                 --no-single-branch)
 514                         single_branch="--no-single-branch"
 515                         ;;
 516                 --)
 517                         shift
 518                         break
 519                         ;;
 520                 -*)
 521                         usage
 522                         ;;
 523                 *)
 524                         break
 525                         ;;
 526                 esac
 527                 shift
 528         done
 529
 530         if test -n "$init"
 531         then
 532                 cmd_init "--" "$@" || return
 533         fi
 534
 535         {
 536         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 537                 ${progress:+"--progress"} \
 538                 ${wt_prefix:+--prefix "$wt_prefix"} \
 539                 ${prefix:+--recursive-prefix "$prefix"} \
 540                 ${update:+--update "$update"} \
 541                 ${reference:+"$reference"} \
 542                 ${dissociate:+"--dissociate"} \
 543                 ${depth:+--depth "$depth"} \
 544                 ${require_init:+--require-init} \
 545                 $single_branch \
 546                 $recommend_shallow \
 547                 $jobs \
 548                 -- \
 549                 "$@" || echo "#unmatched" $?
 550         } | {
 551         err=
 552         while read -r quickabort sha1 just_cloned sm_path
 553         do
 554                 die_if_unmatched "$quickabort" "$sha1"
 555
 556                 git submodule--helper ensure-core-worktree "$sm_path" || exit 1
 557
 558                 update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
 559
 560                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 561
 562                 if test $just_cloned -eq 1
 563                 then
 564                         subsha1=
 565                 else
 566                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 567                                 git rev-parse --verify HEAD) ||
 568                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 569                 fi
 570
 571                 if test -n "$remote"
 572                 then
 573                         branch=$(git submodule--helper remote-branch "$sm_path")
 574                         if test -z "$nofetch"
 575                         then
 576                                 # Fetch remote before determining tracking $sha1
 577                                 fetch_in_submodule "$sm_path" $depth ||
 578                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 579                         fi
 580                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && git submodule--helper print-default-remote)
 581                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 582                                 git rev-parse --verify "${remote_name}/${branch}") ||
 583                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 584                 fi
 585
 586                 if test "$subsha1" != "$sha1" || test -n "$force"
 587                 then
 588                         subforce=$force
 589                         # If we don't already have a -f flag and the submodule has never been checked out
 590                         if test -z "$subsha1" && test -z "$force"
 591                         then
 592                                 subforce="-f"
 593                         fi
 594
 595                         if test -z "$nofetch"
 596                         then
 597                                 # Run fetch only if $sha1 isn't present or it
 598                                 # is not reachable from a ref.
 599                                 is_tip_reachable "$sm_path" "$sha1" ||
 600                                 fetch_in_submodule "$sm_path" $depth ||
 601                                 say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'; trying to directly fetch \$sha1:")"
 602
 603                                 # Now we tried the usual fetch, but $sha1 may
 604                                 # not be reachable from any of the refs
 605                                 is_tip_reachable "$sm_path" "$sha1" ||
 606                                 fetch_in_submodule "$sm_path" "$depth" "$sha1" ||
 607                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 608                         fi
 609
 610                         must_die_on_failure=
 611                         case "$update_module" in
 612                         checkout)
 613                                 command="git checkout $subforce -q"
 614                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 615                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 616                                 ;;
 617                         rebase)
 618                                 command="git rebase ${GIT_QUIET:+--quiet}"
 619                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 620                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 621                                 must_die_on_failure=yes
 622                                 ;;
 623                         merge)
 624                                 command="git merge ${GIT_QUIET:+--quiet}"
 625                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 626                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 627                                 must_die_on_failure=yes
 628                                 ;;
 629                         !*)
 630                                 command="${update_module#!}"
 631                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 632                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 633                                 must_die_on_failure=yes
 634                                 ;;
 635                         *)
 636                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
 637                         esac
 638
 639                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 640                         then
 641                                 say "$say_msg"
 642                         elif test -n "$must_die_on_failure"
 643                         then
 644                                 die_with_status 2 "$die_msg"
 645                         else
 646                                 err="${err};$die_msg"
 647                                 continue
 648                         fi
 649                 fi
 650
 651                 if test -n "$recursive"
 652                 then
 653                         (
 654                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 655                                 wt_prefix=
 656                                 sanitize_submodule_env
 657                                 cd "$sm_path" &&
 658                                 eval cmd_update
 659                         )
 660                         res=$?
 661                         if test $res -gt 0
 662                         then
 663                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 664                                 if test $res -ne 2
 665                                 then
 666                                         err="${err};$die_msg"
 667                                         continue
 668                                 else
 669                                         die_with_status $res "$die_msg"
 670                                 fi
 671                         fi
 672                 fi
 673         done
 674
 675         if test -n "$err"
 676         then
 677                 OIFS=$IFS
 678                 IFS=';'
 679                 for e in $err
 680                 do
 681                         if test -n "$e"
 682                         then
 683                                 echo >&2 "$e"
 684                         fi
 685                 done
 686                 IFS=$OIFS
 687                 exit 1
 688         fi
 689         }
 690 }
 691
 692 #
 693 # Configures a submodule's default branch
 694 #
 695 # $@ = requested path
 696 #
 697 cmd_set_branch() {
 698         default=
 699         branch=
 700
 701         while test $# -ne 0
 702         do
 703                 case "$1" in
 704                 -q|--quiet)
 705                         # we don't do anything with this but we need to accept it
 706                         ;;
 707                 -d|--default)
 708                         default=1
 709                         ;;
 710                 -b|--branch)
 711                         case "$2" in '') usage ;; esac
 712                         branch=$2
 713                         shift
 714                         ;;
 715                 --)
 716                         shift
 717                         break
 718                         ;;
 719                 -*)
 720                         usage
 721                         ;;
 722                 *)
 723                         break
 724                         ;;
 725                 esac
 726                 shift
 727         done
 728
 729         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-branch ${GIT_QUIET:+--quiet} ${branch:+--branch "$branch"} ${default:+--default} -- "$@"
 730 }
 731
 732 #
 733 # Configures a submodule's remote url
 734 #
 735 # $@ = requested path, requested url
 736 #
 737 cmd_set_url() {
 738         while test $# -ne 0
 739         do
 740                 case "$1" in
 741                 -q|--quiet)
 742                         GIT_QUIET=1
 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"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-url ${GIT_QUIET:+--quiet} -- "$@"
 759 }
 760
 761 #
 762 # Show commit summary for submodules in index or working tree
 763 #
 764 # If '--cached' is given, show summary between index and given commit,
 765 # or between working tree and given commit
 766 #
 767 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 768 #
 769 cmd_summary() {
 770         summary_limit=-1
 771         for_status=
 772         diff_cmd=diff-index
 773
 774         # parse $args after "submodule ... summary".
 775         while test $# -ne 0
 776         do
 777                 case "$1" in
 778                 --cached)
 779                         cached="$1"
 780                         ;;
 781                 --files)
 782                         files="$1"
 783                         ;;
 784                 --for-status)
 785                         for_status="$1"
 786                         ;;
 787                 -n|--summary-limit)
 788                         summary_limit="$2"
 789                         isnumber "$summary_limit" || usage
 790                         shift
 791                         ;;
 792                 --summary-limit=*)
 793                         summary_limit="${1#--summary-limit=}"
 794                         isnumber "$summary_limit" || usage
 795                         ;;
 796                 --)
 797                         shift
 798                         break
 799                         ;;
 800                 -*)
 801                         usage
 802                         ;;
 803                 *)
 804                         break
 805                         ;;
 806                 esac
 807                 shift
 808         done
 809
 810         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper summary ${prefix:+--prefix "$prefix"} ${files:+--files} ${cached:+--cached} ${for_status:+--for-status} ${summary_limit:+-n $summary_limit} -- "$@"
 811 }
 812 #
 813 # List all submodules, prefixed with:
 814 #  - submodule not initialized
 815 #  + different revision checked out
 816 #
 817 # If --cached was specified the revision in the index will be printed
 818 # instead of the currently checked out revision.
 819 #
 820 # $@ = requested paths (default to all)
 821 #
 822 cmd_status()
 823 {
 824         # parse $args after "submodule ... status".
 825         while test $# -ne 0
 826         do
 827                 case "$1" in
 828                 -q|--quiet)
 829                         GIT_QUIET=1
 830                         ;;
 831                 --cached)
 832                         cached=1
 833                         ;;
 834                 --recursive)
 835                         recursive=1
 836                         ;;
 837                 --)
 838                         shift
 839                         break
 840                         ;;
 841                 -*)
 842                         usage
 843                         ;;
 844                 *)
 845                         break
 846                         ;;
 847                 esac
 848                 shift
 849         done
 850
 851         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} -- "$@"
 852 }
 853 #
 854 # Sync remote urls for submodules
 855 # This makes the value for remote.$remote.url match the value
 856 # specified in .gitmodules.
 857 #
 858 cmd_sync()
 859 {
 860         while test $# -ne 0
 861         do
 862                 case "$1" in
 863                 -q|--quiet)
 864                         GIT_QUIET=1
 865                         shift
 866                         ;;
 867                 --recursive)
 868                         recursive=1
 869                         shift
 870                         ;;
 871                 --)
 872                         shift
 873                         break
 874                         ;;
 875                 -*)
 876                         usage
 877                         ;;
 878                 *)
 879                         break
 880                         ;;
 881                 esac
 882         done
 883
 884         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 885 }
 886
 887 cmd_absorbgitdirs()
 888 {
 889         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
 890 }
 891
 892 # This loop parses the command line arguments to find the
 893 # subcommand name to dispatch.  Parsing of the subcommand specific
 894 # options are primarily done by the subcommand implementations.
 895 # Subcommand specific options such as --branch and --cached are
 896 # parsed here as well, for backward compatibility.
 897
 898 while test $# != 0 && test -z "$command"
 899 do
 900         case "$1" in
 901         add | foreach | init | deinit | update | set-branch | set-url | status | summary | sync | absorbgitdirs)
 902                 command=$1
 903                 ;;
 904         -q|--quiet)
 905                 GIT_QUIET=1
 906                 ;;
 907         -b|--branch)
 908                 case "$2" in
 909                 '')
 910                         usage
 911                         ;;
 912                 esac
 913                 branch="$2"; shift
 914                 ;;
 915         --cached)
 916                 cached="$1"
 917                 ;;
 918         --)
 919                 break
 920                 ;;
 921         -*)
 922                 usage
 923                 ;;
 924         *)
 925                 break
 926                 ;;
 927         esac
 928         shift
 929 done
 930
 931 # No command word defaults to "status"
 932 if test -z "$command"
 933 then
 934     if test $# = 0
 935     then
 936         command=status
 937     else
 938         usage
 939     fi
 940 fi
 941
 942 # "-b branch" is accepted only by "add" and "set-branch"
 943 if test -n "$branch" && (test "$command" != add || test "$command" != set-branch)
 944 then
 945         usage
 946 fi
 947
 948 # "--cached" is accepted only by "status" and "summary"
 949 if test -n "$cached" && test "$command" != status && test "$command" != summary
 950 then
 951         usage
 952 fi
 953
 954 "cmd_$(echo $command | sed -e s/-/_/g)" "$@"