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: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  20 OPTIONS_SPEC=
  21 SUBDIRECTORY_OK=Yes
  22 . git-sh-setup
  23 . git-parse-remote
  24 require_work_tree
  25 wt_prefix=$(git rev-parse --show-prefix)
  26 cd_to_toplevel
  27
  28 # Tell the rest of git that any URLs we get don't come
  29 # directly from the user, so it can apply policy as appropriate.
  30 GIT_PROTOCOL_FROM_USER=0
  31 export GIT_PROTOCOL_FROM_USER
  32
  33 command=
  34 branch=
  35 force=
  36 reference=
  37 cached=
  38 recursive=
  39 init=
  40 require_init=
  41 files=
  42 remote=
  43 nofetch=
  44 update=
  45 prefix=
  46 custom_name=
  47 depth=
  48 progress=
  49 dissociate=
  50 single_branch=
  51 jobs=
  52 recommend_shallow=
  53
  54 die_if_unmatched ()
  55 {
  56         if test "$1" = "#unmatched"
  57         then
  58                 exit ${2:-1}
  59         fi
  60 }
  61
  62 isnumber()
  63 {
  64         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  65 }
  66
  67 # Given a full hex object ID, is this the zero OID?
  68 is_zero_oid () {
  69         echo "$1" | sane_egrep '^0+$' >/dev/null 2>&1
  70 }
  71
  72 # Sanitize the local git environment for use within a submodule. We
  73 # can't simply use clear_local_git_env since we want to preserve some
  74 # of the settings from GIT_CONFIG_PARAMETERS.
  75 sanitize_submodule_env()
  76 {
  77         save_config=$GIT_CONFIG_PARAMETERS
  78         clear_local_git_env
  79         GIT_CONFIG_PARAMETERS=$save_config
  80         export GIT_CONFIG_PARAMETERS
  81 }
  82
  83 #
  84 # Add a new submodule to the working tree, .gitmodules and the index
  85 #
  86 # $@ = repo path
  87 #
  88 # optional branch is stored in global branch variable
  89 #
  90 cmd_add()
  91 {
  92         # parse $args after "submodule ... add".
  93         reference_path=
  94         while test $# -ne 0
  95         do
  96                 case "$1" in
  97                 -b | --branch)
  98                         case "$2" in '') usage ;; esac
  99                         branch=$2
 100                         shift
 101                         ;;
 102                 -f | --force)
 103                         force=$1
 104                         ;;
 105                 -q|--quiet)
 106                         GIT_QUIET=1
 107                         ;;
 108                 --progress)
 109                         progress=1
 110                         ;;
 111                 --reference)
 112                         case "$2" in '') usage ;; esac
 113                         reference_path=$2
 114                         shift
 115                         ;;
 116                 --reference=*)
 117                         reference_path="${1#--reference=}"
 118                         ;;
 119                 --dissociate)
 120                         dissociate=1
 121                         ;;
 122                 --name)
 123                         case "$2" in '') usage ;; esac
 124                         custom_name=$2
 125                         shift
 126                         ;;
 127                 --depth)
 128                         case "$2" in '') usage ;; esac
 129                         depth="--depth=$2"
 130                         shift
 131                         ;;
 132                 --depth=*)
 133                         depth=$1
 134                         ;;
 135                 --)
 136                         shift
 137                         break
 138                         ;;
 139                 -*)
 140                         usage
 141                         ;;
 142                 *)
 143                         break
 144                         ;;
 145                 esac
 146                 shift
 147         done
 148
 149         if ! git submodule--helper config --check-writeable >/dev/null 2>&1
 150         then
 151                  die "$(eval_gettext "please make sure that the .gitmodules file is in the working tree")"
 152         fi
 153
 154         if test -n "$reference_path"
 155         then
 156                 is_absolute_path "$reference_path" ||
 157                 reference_path="$wt_prefix$reference_path"
 158
 159                 reference="--reference=$reference_path"
 160         fi
 161
 162         repo=$1
 163         sm_path=$2
 164
 165         if test -z "$sm_path"; then
 166                 sm_path=$(printf '%s\n' "$repo" |
 167                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 168         fi
 169
 170         if test -z "$repo" || test -z "$sm_path"; then
 171                 usage
 172         fi
 173
 174         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 175
 176         # assure repo is absolute or relative to parent
 177         case "$repo" in
 178         ./*|../*)
 179                 test -z "$wt_prefix" ||
 180                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 181
 182                 # dereference source url relative to parent's url
 183                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 184                 ;;
 185         *:*|/*)
 186                 # absolute url
 187                 realrepo=$repo
 188                 ;;
 189         *)
 190                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 191         ;;
 192         esac
 193
 194         # normalize path:
 195         # multiple //; leading ./; /./; /../; trailing /
 196         sm_path=$(printf '%s/\n' "$sm_path" |
 197                 sed -e '
 198                         s|//*|/|g
 199                         s|^\(\./\)*||
 200                         s|/\(\./\)*|/|g
 201                         :start
 202                         s|\([^/]*\)/\.\./||
 203                         tstart
 204                         s|/*$||
 205                 ')
 206         if test -z "$force"
 207         then
 208                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 209                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
 210         else
 211                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 212                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 213         fi
 214
 215         if test -d "$sm_path" &&
 216                 test -z $(git -C "$sm_path" rev-parse --show-cdup 2>/dev/null)
 217         then
 218             git -C "$sm_path" rev-parse --verify -q HEAD >/dev/null ||
 219             die "$(eval_gettext "'\$sm_path' does not have a commit checked out")"
 220         fi
 221
 222         if test -z "$force"
 223         then
 224             dryerr=$(git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" 2>&1 >/dev/null)
 225             res=$?
 226             if test $res -ne 0
 227             then
 228                  echo >&2 "$dryerr"
 229                  exit $res
 230             fi
 231         fi
 232
 233         if test -n "$custom_name"
 234         then
 235                 sm_name="$custom_name"
 236         else
 237                 sm_name="$sm_path"
 238         fi
 239
 240         if ! git submodule--helper check-name "$sm_name"
 241         then
 242                 die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
 243         fi
 244
 245         # perhaps the path exists and is already a git repo, else clone it
 246         if test -e "$sm_path"
 247         then
 248                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 249                 then
 250                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 251                 else
 252                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 253                 fi
 254
 255         else
 256                 if test -d ".git/modules/$sm_name"
 257                 then
 258                         if test -z "$force"
 259                         then
 260                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 261                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 262                                 die "$(eval_gettextln "\
 263 If you want to reuse this local git directory instead of cloning again from
 264   \$realrepo
 265 use the '--force' option. If the local git directory is not the correct repo
 266 or you are unsure what this means choose another name with the '--name' option.")"
 267                         else
 268                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 269                         fi
 270                 fi
 271                 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
 272                 (
 273                         sanitize_submodule_env
 274                         cd "$sm_path" &&
 275                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 276                         case "$branch" in
 277                         '') git checkout -f -q ;;
 278                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 279                         esac
 280                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 281         fi
 282         git config submodule."$sm_name".url "$realrepo"
 283
 284         git add --no-warn-embedded-repo $force "$sm_path" ||
 285         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 286
 287         git submodule--helper config submodule."$sm_name".path "$sm_path" &&
 288         git submodule--helper config submodule."$sm_name".url "$repo" &&
 289         if test -n "$branch"
 290         then
 291                 git submodule--helper config submodule."$sm_name".branch "$branch"
 292         fi &&
 293         git add --force .gitmodules ||
 294         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 295
 296         # NEEDSWORK: In a multi-working-tree world, this needs to be
 297         # set in the per-worktree config.
 298         if git config --get submodule.active >/dev/null
 299         then
 300                 # If the submodule being adding isn't already covered by the
 301                 # current configured pathspec, set the submodule's active flag
 302                 if ! git submodule--helper is-active "$sm_path"
 303                 then
 304                         git config submodule."$sm_name".active "true"
 305                 fi
 306         else
 307                 git config submodule."$sm_name".active "true"
 308         fi
 309 }
 310
 311 #
 312 # Execute an arbitrary command sequence in each checked out
 313 # submodule
 314 #
 315 # $@ = command to execute
 316 #
 317 cmd_foreach()
 318 {
 319         # parse $args after "submodule ... foreach".
 320         while test $# -ne 0
 321         do
 322                 case "$1" in
 323                 -q|--quiet)
 324                         GIT_QUIET=1
 325                         ;;
 326                 --recursive)
 327                         recursive=1
 328                         ;;
 329                 -*)
 330                         usage
 331                         ;;
 332                 *)
 333                         break
 334                         ;;
 335                 esac
 336                 shift
 337         done
 338
 339         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 340 }
 341
 342 #
 343 # Register submodules in .git/config
 344 #
 345 # $@ = requested paths (default to all)
 346 #
 347 cmd_init()
 348 {
 349         # parse $args after "submodule ... init".
 350         while test $# -ne 0
 351         do
 352                 case "$1" in
 353                 -q|--quiet)
 354                         GIT_QUIET=1
 355                         ;;
 356                 --)
 357                         shift
 358                         break
 359                         ;;
 360                 -*)
 361                         usage
 362                         ;;
 363                 *)
 364                         break
 365                         ;;
 366                 esac
 367                 shift
 368         done
 369
 370         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet} -- "$@"
 371 }
 372
 373 #
 374 # Unregister submodules from .git/config and remove their work tree
 375 #
 376 cmd_deinit()
 377 {
 378         # parse $args after "submodule ... deinit".
 379         deinit_all=
 380         while test $# -ne 0
 381         do
 382                 case "$1" in
 383                 -f|--force)
 384                         force=$1
 385                         ;;
 386                 -q|--quiet)
 387                         GIT_QUIET=1
 388                         ;;
 389                 --all)
 390                         deinit_all=t
 391                         ;;
 392                 --)
 393                         shift
 394                         break
 395                         ;;
 396                 -*)
 397                         usage
 398                         ;;
 399                 *)
 400                         break
 401                         ;;
 402                 esac
 403                 shift
 404         done
 405
 406         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} -- "$@"
 407 }
 408
 409 is_tip_reachable () (
 410         sanitize_submodule_env &&
 411         cd "$1" &&
 412         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 413         test -z "$rev"
 414 )
 415
 416 fetch_in_submodule () (
 417         sanitize_submodule_env &&
 418         cd "$1" &&
 419         case "$2" in
 420         '')
 421                 git fetch ;;
 422         *)
 423                 shift
 424                 git fetch $(get_default_remote) "$@" ;;
 425         esac
 426 )
 427
 428 #
 429 # Update each submodule path to correct revision, using clone and checkout as needed
 430 #
 431 # $@ = requested paths (default to all)
 432 #
 433 cmd_update()
 434 {
 435         # parse $args after "submodule ... update".
 436         while test $# -ne 0
 437         do
 438                 case "$1" in
 439                 -q|--quiet)
 440                         GIT_QUIET=1
 441                         ;;
 442                 -v)
 443                         unset GIT_QUIET
 444                         ;;
 445                 --progress)
 446                         progress=1
 447                         ;;
 448                 -i|--init)
 449                         init=1
 450                         ;;
 451                 --require-init)
 452                         init=1
 453                         require_init=1
 454                         ;;
 455                 --remote)
 456                         remote=1
 457                         ;;
 458                 -N|--no-fetch)
 459                         nofetch=1
 460                         ;;
 461                 -f|--force)
 462                         force=$1
 463                         ;;
 464                 -r|--rebase)
 465                         update="rebase"
 466                         ;;
 467                 --reference)
 468                         case "$2" in '') usage ;; esac
 469                         reference="--reference=$2"
 470                         shift
 471                         ;;
 472                 --reference=*)
 473                         reference="$1"
 474                         ;;
 475                 --dissociate)
 476                         dissociate=1
 477                         ;;
 478                 -m|--merge)
 479                         update="merge"
 480                         ;;
 481                 --recursive)
 482                         recursive=1
 483                         ;;
 484                 --checkout)
 485                         update="checkout"
 486                         ;;
 487                 --recommend-shallow)
 488                         recommend_shallow="--recommend-shallow"
 489                         ;;
 490                 --no-recommend-shallow)
 491                         recommend_shallow="--no-recommend-shallow"
 492                         ;;
 493                 --depth)
 494                         case "$2" in '') usage ;; esac
 495                         depth="--depth=$2"
 496                         shift
 497                         ;;
 498                 --depth=*)
 499                         depth=$1
 500                         ;;
 501                 -j|--jobs)
 502                         case "$2" in '') usage ;; esac
 503                         jobs="--jobs=$2"
 504                         shift
 505                         ;;
 506                 --jobs=*)
 507                         jobs=$1
 508                         ;;
 509                 --single-branch)
 510                         single_branch="--single-branch"
 511                         ;;
 512                 --no-single-branch)
 513                         single_branch="--no-single-branch"
 514                         ;;
 515                 --)
 516                         shift
 517                         break
 518                         ;;
 519                 -*)
 520                         usage
 521                         ;;
 522                 *)
 523                         break
 524                         ;;
 525                 esac
 526                 shift
 527         done
 528
 529         if test -n "$init"
 530         then
 531                 cmd_init "--" "$@" || return
 532         fi
 533
 534         {
 535         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 536                 ${progress:+"--progress"} \
 537                 ${wt_prefix:+--prefix "$wt_prefix"} \
 538                 ${prefix:+--recursive-prefix "$prefix"} \
 539                 ${update:+--update "$update"} \
 540                 ${reference:+"$reference"} \
 541                 ${dissociate:+"--dissociate"} \
 542                 ${depth:+--depth "$depth"} \
 543                 ${require_init:+--require-init} \
 544                 $single_branch \
 545                 $recommend_shallow \
 546                 $jobs \
 547                 -- \
 548                 "$@" || echo "#unmatched" $?
 549         } | {
 550         err=
 551         while read -r quickabort sha1 just_cloned sm_path
 552         do
 553                 die_if_unmatched "$quickabort" "$sha1"
 554
 555                 git submodule--helper ensure-core-worktree "$sm_path" || exit 1
 556
 557                 update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
 558
 559                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 560
 561                 if test $just_cloned -eq 1
 562                 then
 563                         subsha1=
 564                 else
 565                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 566                                 git rev-parse --verify HEAD) ||
 567                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 568                 fi
 569
 570                 if test -n "$remote"
 571                 then
 572                         branch=$(git submodule--helper remote-branch "$sm_path")
 573                         if test -z "$nofetch"
 574                         then
 575                                 # Fetch remote before determining tracking $sha1
 576                                 fetch_in_submodule "$sm_path" $depth ||
 577                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 578                         fi
 579                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 580                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 581                                 git rev-parse --verify "${remote_name}/${branch}") ||
 582                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 583                 fi
 584
 585                 if test "$subsha1" != "$sha1" || test -n "$force"
 586                 then
 587                         subforce=$force
 588                         # If we don't already have a -f flag and the submodule has never been checked out
 589                         if test -z "$subsha1" && test -z "$force"
 590                         then
 591                                 subforce="-f"
 592                         fi
 593
 594                         if test -z "$nofetch"
 595                         then
 596                                 # Run fetch only if $sha1 isn't present or it
 597                                 # is not reachable from a ref.
 598                                 is_tip_reachable "$sm_path" "$sha1" ||
 599                                 fetch_in_submodule "$sm_path" $depth ||
 600                                 say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'; trying to directly fetch \$sha1:")"
 601
 602                                 # Now we tried the usual fetch, but $sha1 may
 603                                 # not be reachable from any of the refs
 604                                 is_tip_reachable "$sm_path" "$sha1" ||
 605                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
 606                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 607                         fi
 608
 609                         must_die_on_failure=
 610                         case "$update_module" in
 611                         checkout)
 612                                 command="git checkout $subforce -q"
 613                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 614                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 615                                 ;;
 616                         rebase)
 617                                 command="git rebase ${GIT_QUIET:+--quiet}"
 618                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 619                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 620                                 must_die_on_failure=yes
 621                                 ;;
 622                         merge)
 623                                 command="git merge ${GIT_QUIET:+--quiet}"
 624                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 625                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 626                                 must_die_on_failure=yes
 627                                 ;;
 628                         !*)
 629                                 command="${update_module#!}"
 630                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 631                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 632                                 must_die_on_failure=yes
 633                                 ;;
 634                         *)
 635                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
 636                         esac
 637
 638                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 639                         then
 640                                 say "$say_msg"
 641                         elif test -n "$must_die_on_failure"
 642                         then
 643                                 die_with_status 2 "$die_msg"
 644                         else
 645                                 err="${err};$die_msg"
 646                                 continue
 647                         fi
 648                 fi
 649
 650                 if test -n "$recursive"
 651                 then
 652                         (
 653                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 654                                 wt_prefix=
 655                                 sanitize_submodule_env
 656                                 cd "$sm_path" &&
 657                                 eval cmd_update
 658                         )
 659                         res=$?
 660                         if test $res -gt 0
 661                         then
 662                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 663                                 if test $res -ne 2
 664                                 then
 665                                         err="${err};$die_msg"
 666                                         continue
 667                                 else
 668                                         die_with_status $res "$die_msg"
 669                                 fi
 670                         fi
 671                 fi
 672         done
 673
 674         if test -n "$err"
 675         then
 676                 OIFS=$IFS
 677                 IFS=';'
 678                 for e in $err
 679                 do
 680                         if test -n "$e"
 681                         then
 682                                 echo >&2 "$e"
 683                         fi
 684                 done
 685                 IFS=$OIFS
 686                 exit 1
 687         fi
 688         }
 689 }
 690
 691 #
 692 # Configures a submodule's default branch
 693 #
 694 # $@ = requested path
 695 #
 696 cmd_set_branch() {
 697         default=
 698         branch=
 699
 700         while test $# -ne 0
 701         do
 702                 case "$1" in
 703                 -q|--quiet)
 704                         # we don't do anything with this but we need to accept it
 705                         ;;
 706                 -d|--default)
 707                         default=1
 708                         ;;
 709                 -b|--branch)
 710                         case "$2" in '') usage ;; esac
 711                         branch=$2
 712                         shift
 713                         ;;
 714                 --)
 715                         shift
 716                         break
 717                         ;;
 718                 -*)
 719                         usage
 720                         ;;
 721                 *)
 722                         break
 723                         ;;
 724                 esac
 725                 shift
 726         done
 727
 728         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-branch ${GIT_QUIET:+--quiet} ${branch:+--branch "$branch"} ${default:+--default} -- "$@"
 729 }
 730
 731 #
 732 # Configures a submodule's remote url
 733 #
 734 # $@ = requested path, requested url
 735 #
 736 cmd_set_url() {
 737         while test $# -ne 0
 738         do
 739                 case "$1" in
 740                 -q|--quiet)
 741                         GIT_QUIET=1
 742                         ;;
 743                 --)
 744                         shift
 745                         break
 746                         ;;
 747                 -*)
 748                         usage
 749                         ;;
 750                 *)
 751                         break
 752                         ;;
 753                 esac
 754                 shift
 755         done
 756
 757         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper set-url ${GIT_QUIET:+--quiet} -- "$@"
 758 }
 759
 760 #
 761 # Show commit summary for submodules in index or working tree
 762 #
 763 # If '--cached' is given, show summary between index and given commit,
 764 # or between working tree and given commit
 765 #
 766 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 767 #
 768 cmd_summary() {
 769         summary_limit=-1
 770         for_status=
 771         diff_cmd=diff-index
 772
 773         # parse $args after "submodule ... summary".
 774         while test $# -ne 0
 775         do
 776                 case "$1" in
 777                 --cached)
 778                         cached="$1"
 779                         ;;
 780                 --files)
 781                         files="$1"
 782                         ;;
 783                 --for-status)
 784                         for_status="$1"
 785                         ;;
 786                 -n|--summary-limit)
 787                         summary_limit="$2"
 788                         isnumber "$summary_limit" || usage
 789                         shift
 790                         ;;
 791                 --summary-limit=*)
 792                         summary_limit="${1#--summary-limit=}"
 793                         isnumber "$summary_limit" || usage
 794                         ;;
 795                 --)
 796                         shift
 797                         break
 798                         ;;
 799                 -*)
 800                         usage
 801                         ;;
 802                 *)
 803                         break
 804                         ;;
 805                 esac
 806                 shift
 807         done
 808
 809         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper summary ${prefix:+--prefix "$prefix"} ${files:+--files} ${cached:+--cached} ${for_status:+--for-status} ${summary_limit:+-n $summary_limit} -- "$@"
 810 }
 811 #
 812 # List all submodules, prefixed with:
 813 #  - submodule not initialized
 814 #  + different revision checked out
 815 #
 816 # If --cached was specified the revision in the index will be printed
 817 # instead of the currently checked out revision.
 818 #
 819 # $@ = requested paths (default to all)
 820 #
 821 cmd_status()
 822 {
 823         # parse $args after "submodule ... status".
 824         while test $# -ne 0
 825         do
 826                 case "$1" in
 827                 -q|--quiet)
 828                         GIT_QUIET=1
 829                         ;;
 830                 --cached)
 831                         cached=1
 832                         ;;
 833                 --recursive)
 834                         recursive=1
 835                         ;;
 836                 --)
 837                         shift
 838                         break
 839                         ;;
 840                 -*)
 841                         usage
 842                         ;;
 843                 *)
 844                         break
 845                         ;;
 846                 esac
 847                 shift
 848         done
 849
 850         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} -- "$@"
 851 }
 852 #
 853 # Sync remote urls for submodules
 854 # This makes the value for remote.$remote.url match the value
 855 # specified in .gitmodules.
 856 #
 857 cmd_sync()
 858 {
 859         while test $# -ne 0
 860         do
 861                 case "$1" in
 862                 -q|--quiet)
 863                         GIT_QUIET=1
 864                         shift
 865                         ;;
 866                 --recursive)
 867                         recursive=1
 868                         shift
 869                         ;;
 870                 --)
 871                         shift
 872                         break
 873                         ;;
 874                 -*)
 875                         usage
 876                         ;;
 877                 *)
 878                         break
 879                         ;;
 880                 esac
 881         done
 882
 883         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} -- "$@"
 884 }
 885
 886 cmd_absorbgitdirs()
 887 {
 888         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
 889 }
 890
 891 # This loop parses the command line arguments to find the
 892 # subcommand name to dispatch.  Parsing of the subcommand specific
 893 # options are primarily done by the subcommand implementations.
 894 # Subcommand specific options such as --branch and --cached are
 895 # parsed here as well, for backward compatibility.
 896
 897 while test $# != 0 && test -z "$command"
 898 do
 899         case "$1" in
 900         add | foreach | init | deinit | update | set-branch | set-url | status | summary | sync | absorbgitdirs)
 901                 command=$1
 902                 ;;
 903         -q|--quiet)
 904                 GIT_QUIET=1
 905                 ;;
 906         -b|--branch)
 907                 case "$2" in
 908                 '')
 909                         usage
 910                         ;;
 911                 esac
 912                 branch="$2"; shift
 913                 ;;
 914         --cached)
 915                 cached="$1"
 916                 ;;
 917         --)
 918                 break
 919                 ;;
 920         -*)
 921                 usage
 922                 ;;
 923         *)
 924                 break
 925                 ;;
 926         esac
 927         shift
 928 done
 929
 930 # No command word defaults to "status"
 931 if test -z "$command"
 932 then
 933     if test $# = 0
 934     then
 935         command=status
 936     else
 937         usage
 938     fi
 939 fi
 940
 941 # "-b branch" is accepted only by "add" and "set-branch"
 942 if test -n "$branch" && (test "$command" != add || test "$command" != set-branch)
 943 then
 944         usage
 945 fi
 946
 947 # "--cached" is accepted only by "status" and "summary"
 948 if test -n "$cached" && test "$command" != status && test "$command" != summary
 949 then
 950         usage
 951 fi
 952
 953 "cmd_$(echo $command | sed -e s/-/_/g)" "$@"