git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # git-submodules.sh: add, init, update or list git submodules
   4 #
   5 # Copyright (c) 2007 Lars Hjemli
   6
   7 dashless=$(basename "$0" | sed -e 's/-/ /')
   8 USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] update [--init] [-N|--no-fetch] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
  12    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  13    or: $dashless [--quiet] foreach [--recursive] <command>
  14    or: $dashless [--quiet] sync [--] [<path>...]"
  15 OPTIONS_SPEC=
  16 . git-sh-setup
  17 . git-parse-remote
  18 require_work_tree
  19
  20 command=
  21 branch=
  22 force=
  23 reference=
  24 cached=
  25 recursive=
  26 init=
  27 files=
  28 nofetch=
  29 update=
  30 prefix=
  31
  32 # Resolve relative url by appending to parent's url
  33 resolve_relative_url ()
  34 {
  35         remote=$(get_default_remote)
  36         remoteurl=$(git config "remote.$remote.url") ||
  37                 die "remote ($remote) does not have a url defined in .git/config"
  38         url="$1"
  39         remoteurl=${remoteurl%/}
  40         sep=/
  41         while test -n "$url"
  42         do
  43                 case "$url" in
  44                 ../*)
  45                         url="${url#../}"
  46                         case "$remoteurl" in
  47                         */*)
  48                                 remoteurl="${remoteurl%/*}"
  49                                 ;;
  50                         *:*)
  51                                 remoteurl="${remoteurl%:*}"
  52                                 sep=:
  53                                 ;;
  54                         *)
  55                                 die "cannot strip one component off url '$remoteurl'"
  56                                 ;;
  57                         esac
  58                         ;;
  59                 ./*)
  60                         url="${url#./}"
  61                         ;;
  62                 *)
  63                         break;;
  64                 esac
  65         done
  66         echo "$remoteurl$sep${url%/}"
  67 }
  68
  69 #
  70 # Get submodule info for registered submodules
  71 # $@ = path to limit submodule list
  72 #
  73 module_list()
  74 {
  75         git ls-files --error-unmatch --stage -- "$@" | sane_grep '^160000 '
  76 }
  77
  78 #
  79 # Map submodule path to submodule name
  80 #
  81 # $1 = path
  82 #
  83 module_name()
  84 {
  85         # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
  86         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
  87         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
  88                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
  89        test -z "$name" &&
  90        die "No submodule mapping found in .gitmodules for path '$path'"
  91        echo "$name"
  92 }
  93
  94 #
  95 # Clone a submodule
  96 #
  97 # Prior to calling, cmd_update checks that a possibly existing
  98 # path is not a git repository.
  99 # Likewise, cmd_add checks that path does not exist at all,
 100 # since it is the location of a new submodule.
 101 #
 102 module_clone()
 103 {
 104         path=$1
 105         url=$2
 106         reference="$3"
 107
 108         if test -n "$reference"
 109         then
 110                 git-clone "$reference" -n "$url" "$path"
 111         else
 112                 git-clone -n "$url" "$path"
 113         fi ||
 114         die "Clone of '$url' into submodule path '$path' failed"
 115 }
 116
 117 #
 118 # Add a new submodule to the working tree, .gitmodules and the index
 119 #
 120 # $@ = repo path
 121 #
 122 # optional branch is stored in global branch variable
 123 #
 124 cmd_add()
 125 {
 126         # parse $args after "submodule ... add".
 127         while test $# -ne 0
 128         do
 129                 case "$1" in
 130                 -b | --branch)
 131                         case "$2" in '') usage ;; esac
 132                         branch=$2
 133                         shift
 134                         ;;
 135                 -f | --force)
 136                         force=$1
 137                         ;;
 138                 -q|--quiet)
 139                         GIT_QUIET=1
 140                         ;;
 141                 --reference)
 142                         case "$2" in '') usage ;; esac
 143                         reference="--reference=$2"
 144                         shift
 145                         ;;
 146                 --reference=*)
 147                         reference="$1"
 148                         shift
 149                         ;;
 150                 --)
 151                         shift
 152                         break
 153                         ;;
 154                 -*)
 155                         usage
 156                         ;;
 157                 *)
 158                         break
 159                         ;;
 160                 esac
 161                 shift
 162         done
 163
 164         repo=$1
 165         path=$2
 166
 167         if test -z "$path"; then
 168                 path=$(echo "$repo" |
 169                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 170         fi
 171
 172         if test -z "$repo" -o -z "$path"; then
 173                 usage
 174         fi
 175
 176         # assure repo is absolute or relative to parent
 177         case "$repo" in
 178         ./*|../*)
 179                 # dereference source url relative to parent's url
 180                 realrepo=$(resolve_relative_url "$repo") || exit
 181                 ;;
 182         *:*|/*)
 183                 # absolute url
 184                 realrepo=$repo
 185                 ;;
 186         *)
 187                 die "repo URL: '$repo' must be absolute or begin with ./|../"
 188         ;;
 189         esac
 190
 191         # normalize path:
 192         # multiple //; leading ./; /./; /../; trailing /
 193         path=$(printf '%s/\n' "$path" |
 194                 sed -e '
 195                         s|//*|/|g
 196                         s|^\(\./\)*||
 197                         s|/\./|/|g
 198                         :start
 199                         s|\([^/]*\)/\.\./||
 200                         tstart
 201                         s|/*$||
 202                 ')
 203         git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
 204         die "'$path' already exists in the index"
 205
 206         if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
 207         then
 208                 echo >&2 "The following path is ignored by one of your .gitignore files:" &&
 209                 echo >&2 $path &&
 210                 echo >&2 "Use -f if you really want to add it."
 211                 exit 1
 212         fi
 213
 214         # perhaps the path exists and is already a git repo, else clone it
 215         if test -e "$path"
 216         then
 217                 if test -d "$path"/.git -o -f "$path"/.git
 218                 then
 219                         echo "Adding existing repo at '$path' to the index"
 220                 else
 221                         die "'$path' already exists and is not a valid git repo"
 222                 fi
 223
 224                 case "$repo" in
 225                 ./*|../*)
 226                         url=$(resolve_relative_url "$repo") || exit
 227                     ;;
 228                 *)
 229                         url="$repo"
 230                         ;;
 231                 esac
 232                 git config submodule."$path".url "$url"
 233         else
 234
 235                 module_clone "$path" "$realrepo" "$reference" || exit
 236                 (
 237                         clear_local_git_env
 238                         cd "$path" &&
 239                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 240                         case "$branch" in
 241                         '') git checkout -f -q ;;
 242                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 243                         esac
 244                 ) || die "Unable to checkout submodule '$path'"
 245         fi
 246
 247         git add $force "$path" ||
 248         die "Failed to add submodule '$path'"
 249
 250         git config -f .gitmodules submodule."$path".path "$path" &&
 251         git config -f .gitmodules submodule."$path".url "$repo" &&
 252         git add --force .gitmodules ||
 253         die "Failed to register submodule '$path'"
 254 }
 255
 256 #
 257 # Execute an arbitrary command sequence in each checked out
 258 # submodule
 259 #
 260 # $@ = command to execute
 261 #
 262 cmd_foreach()
 263 {
 264         # parse $args after "submodule ... foreach".
 265         while test $# -ne 0
 266         do
 267                 case "$1" in
 268                 -q|--quiet)
 269                         GIT_QUIET=1
 270                         ;;
 271                 --recursive)
 272                         recursive=1
 273                         ;;
 274                 -*)
 275                         usage
 276                         ;;
 277                 *)
 278                         break
 279                         ;;
 280                 esac
 281                 shift
 282         done
 283
 284         toplevel=$(pwd)
 285
 286         module_list |
 287         while read mode sha1 stage path
 288         do
 289                 if test -e "$path"/.git
 290                 then
 291                         say "Entering '$prefix$path'"
 292                         name=$(module_name "$path")
 293                         (
 294                                 prefix="$prefix$path/"
 295                                 clear_local_git_env
 296                                 cd "$path" &&
 297                                 eval "$@" &&
 298                                 if test -n "$recursive"
 299                                 then
 300                                         cmd_foreach "--recursive" "$@"
 301                                 fi
 302                         ) ||
 303                         die "Stopping at '$path'; script returned non-zero status."
 304                 fi
 305         done
 306 }
 307
 308 #
 309 # Register submodules in .git/config
 310 #
 311 # $@ = requested paths (default to all)
 312 #
 313 cmd_init()
 314 {
 315         # parse $args after "submodule ... init".
 316         while test $# -ne 0
 317         do
 318                 case "$1" in
 319                 -q|--quiet)
 320                         GIT_QUIET=1
 321                         ;;
 322                 --)
 323                         shift
 324                         break
 325                         ;;
 326                 -*)
 327                         usage
 328                         ;;
 329                 *)
 330                         break
 331                         ;;
 332                 esac
 333                 shift
 334         done
 335
 336         module_list "$@" |
 337         while read mode sha1 stage path
 338         do
 339                 # Skip already registered paths
 340                 name=$(module_name "$path") || exit
 341                 url=$(git config submodule."$name".url)
 342                 test -z "$url" || continue
 343
 344                 url=$(git config -f .gitmodules submodule."$name".url)
 345                 test -z "$url" &&
 346                 die "No url found for submodule path '$path' in .gitmodules"
 347
 348                 # Possibly a url relative to parent
 349                 case "$url" in
 350                 ./*|../*)
 351                         url=$(resolve_relative_url "$url") || exit
 352                         ;;
 353                 esac
 354
 355                 git config submodule."$name".url "$url" ||
 356                 die "Failed to register url for submodule path '$path'"
 357
 358                 upd="$(git config -f .gitmodules submodule."$name".update)"
 359                 test -z "$upd" ||
 360                 git config submodule."$name".update "$upd" ||
 361                 die "Failed to register update mode for submodule path '$path'"
 362
 363                 say "Submodule '$name' ($url) registered for path '$path'"
 364         done
 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         orig_flags=
 376         while test $# -ne 0
 377         do
 378                 case "$1" in
 379                 -q|--quiet)
 380                         GIT_QUIET=1
 381                         ;;
 382                 -i|--init)
 383                         init=1
 384                         ;;
 385                 -N|--no-fetch)
 386                         nofetch=1
 387                         ;;
 388                 -r|--rebase)
 389                         update="rebase"
 390                         ;;
 391                 --reference)
 392                         case "$2" in '') usage ;; esac
 393                         reference="--reference=$2"
 394                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 395                         shift
 396                         ;;
 397                 --reference=*)
 398                         reference="$1"
 399                         ;;
 400                 -m|--merge)
 401                         update="merge"
 402                         ;;
 403                 --recursive)
 404                         recursive=1
 405                         ;;
 406                 --)
 407                         shift
 408                         break
 409                         ;;
 410                 -*)
 411                         usage
 412                         ;;
 413                 *)
 414                         break
 415                         ;;
 416                 esac
 417                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 418                 shift
 419         done
 420
 421         if test -n "$init"
 422         then
 423                 cmd_init "--" "$@" || return
 424         fi
 425
 426         cloned_modules=
 427         module_list "$@" |
 428         while read mode sha1 stage path
 429         do
 430                 name=$(module_name "$path") || exit
 431                 url=$(git config submodule."$name".url)
 432                 update_module=$(git config submodule."$name".update)
 433                 if test -z "$url"
 434                 then
 435                         # Only mention uninitialized submodules when its
 436                         # path have been specified
 437                         test "$#" != "0" &&
 438                         say "Submodule path '$path' not initialized" &&
 439                         say "Maybe you want to use 'update --init'?"
 440                         continue
 441                 fi
 442
 443                 if ! test -d "$path"/.git -o -f "$path"/.git
 444                 then
 445                         module_clone "$path" "$url" "$reference"|| exit
 446                         cloned_modules="$cloned_modules;$name"
 447                         subsha1=
 448                 else
 449                         subsha1=$(clear_local_git_env; cd "$path" &&
 450                                 git rev-parse --verify HEAD) ||
 451                         die "Unable to find current revision in submodule path '$path'"
 452                 fi
 453
 454                 if ! test -z "$update"
 455                 then
 456                         update_module=$update
 457                 fi
 458
 459                 if test "$subsha1" != "$sha1"
 460                 then
 461                         force=
 462                         if test -z "$subsha1"
 463                         then
 464                                 force="-f"
 465                         fi
 466
 467                         if test -z "$nofetch"
 468                         then
 469                                 (clear_local_git_env; cd "$path" &&
 470                                         git-fetch) ||
 471                                 die "Unable to fetch in submodule path '$path'"
 472                         fi
 473
 474                         # Is this something we just cloned?
 475                         case ";$cloned_modules;" in
 476                         *";$name;"*)
 477                                 # then there is no local change to integrate
 478                                 update_module= ;;
 479                         esac
 480
 481                         case "$update_module" in
 482                         rebase)
 483                                 command="git rebase"
 484                                 action="rebase"
 485                                 msg="rebased onto"
 486                                 ;;
 487                         merge)
 488                                 command="git merge"
 489                                 action="merge"
 490                                 msg="merged in"
 491                                 ;;
 492                         *)
 493                                 command="git checkout $force -q"
 494                                 action="checkout"
 495                                 msg="checked out"
 496                                 ;;
 497                         esac
 498
 499                         (clear_local_git_env; cd "$path" && $command "$sha1") ||
 500                         die "Unable to $action '$sha1' in submodule path '$path'"
 501                         say "Submodule path '$path': $msg '$sha1'"
 502                 fi
 503
 504                 if test -n "$recursive"
 505                 then
 506                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
 507                         die "Failed to recurse into submodule path '$path'"
 508                 fi
 509         done
 510 }
 511
 512 set_name_rev () {
 513         revname=$( (
 514                 clear_local_git_env
 515                 cd "$1" && {
 516                         git describe "$2" 2>/dev/null ||
 517                         git describe --tags "$2" 2>/dev/null ||
 518                         git describe --contains "$2" 2>/dev/null ||
 519                         git describe --all --always "$2"
 520                 }
 521         ) )
 522         test -z "$revname" || revname=" ($revname)"
 523 }
 524 #
 525 # Show commit summary for submodules in index or working tree
 526 #
 527 # If '--cached' is given, show summary between index and given commit,
 528 # or between working tree and given commit
 529 #
 530 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 531 #
 532 cmd_summary() {
 533         summary_limit=-1
 534         for_status=
 535         diff_cmd=diff-index
 536
 537         # parse $args after "submodule ... summary".
 538         while test $# -ne 0
 539         do
 540                 case "$1" in
 541                 --cached)
 542                         cached="$1"
 543                         ;;
 544                 --files)
 545                         files="$1"
 546                         ;;
 547                 --for-status)
 548                         for_status="$1"
 549                         ;;
 550                 -n|--summary-limit)
 551                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 552                         then
 553                                 :
 554                         else
 555                                 usage
 556                         fi
 557                         shift
 558                         ;;
 559                 --)
 560                         shift
 561                         break
 562                         ;;
 563                 -*)
 564                         usage
 565                         ;;
 566                 *)
 567                         break
 568                         ;;
 569                 esac
 570                 shift
 571         done
 572
 573         test $summary_limit = 0 && return
 574
 575         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 576         then
 577                 head=$rev
 578                 test $# = 0 || shift
 579         elif test -z "$1" -o "$1" = "HEAD"
 580         then
 581                 # before the first commit: compare with an empty tree
 582                 head=$(git hash-object -w -t tree --stdin </dev/null)
 583                 test -z "$1" || shift
 584         else
 585                 head="HEAD"
 586         fi
 587
 588         if [ -n "$files" ]
 589         then
 590                 test -n "$cached" &&
 591                 die "--cached cannot be used with --files"
 592                 diff_cmd=diff-files
 593                 head=
 594         fi
 595
 596         cd_to_toplevel
 597         # Get modified modules cared by user
 598         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 599                 sane_egrep '^:([0-7]* )?160000' |
 600                 while read mod_src mod_dst sha1_src sha1_dst status name
 601                 do
 602                         # Always show modules deleted or type-changed (blob<->module)
 603                         test $status = D -o $status = T && echo "$name" && continue
 604                         # Also show added or modified modules which are checked out
 605                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 606                         echo "$name"
 607                 done
 608         )
 609
 610         test -z "$modules" && return
 611
 612         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 613         sane_egrep '^:([0-7]* )?160000' |
 614         cut -c2- |
 615         while read mod_src mod_dst sha1_src sha1_dst status name
 616         do
 617                 if test -z "$cached" &&
 618                         test $sha1_dst = 0000000000000000000000000000000000000000
 619                 then
 620                         case "$mod_dst" in
 621                         160000)
 622                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 623                                 ;;
 624                         100644 | 100755 | 120000)
 625                                 sha1_dst=$(git hash-object $name)
 626                                 ;;
 627                         000000)
 628                                 ;; # removed
 629                         *)
 630                                 # unexpected type
 631                                 echo >&2 "unexpected mode $mod_dst"
 632                                 continue ;;
 633                         esac
 634                 fi
 635                 missing_src=
 636                 missing_dst=
 637
 638                 test $mod_src = 160000 &&
 639                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 640                 missing_src=t
 641
 642                 test $mod_dst = 160000 &&
 643                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 644                 missing_dst=t
 645
 646                 total_commits=
 647                 case "$missing_src,$missing_dst" in
 648                 t,)
 649                         errmsg="  Warn: $name doesn't contain commit $sha1_src"
 650                         ;;
 651                 ,t)
 652                         errmsg="  Warn: $name doesn't contain commit $sha1_dst"
 653                         ;;
 654                 t,t)
 655                         errmsg="  Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
 656                         ;;
 657                 *)
 658                         errmsg=
 659                         total_commits=$(
 660                         if test $mod_src = 160000 -a $mod_dst = 160000
 661                         then
 662                                 range="$sha1_src...$sha1_dst"
 663                         elif test $mod_src = 160000
 664                         then
 665                                 range=$sha1_src
 666                         else
 667                                 range=$sha1_dst
 668                         fi
 669                         GIT_DIR="$name/.git" \
 670                         git rev-list --first-parent $range -- | wc -l
 671                         )
 672                         total_commits=" ($(($total_commits + 0)))"
 673                         ;;
 674                 esac
 675
 676                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 677                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 678                 if test $status = T
 679                 then
 680                         if test $mod_dst = 160000
 681                         then
 682                                 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
 683                         else
 684                                 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
 685                         fi
 686                 else
 687                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 688                 fi
 689                 if test -n "$errmsg"
 690                 then
 691                         # Don't give error msg for modification whose dst is not submodule
 692                         # i.e. deleted or changed to blob
 693                         test $mod_dst = 160000 && echo "$errmsg"
 694                 else
 695                         if test $mod_src = 160000 -a $mod_dst = 160000
 696                         then
 697                                 limit=
 698                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 699                                 GIT_DIR="$name/.git" \
 700                                 git log $limit --pretty='format:  %m %s' \
 701                                 --first-parent $sha1_src...$sha1_dst
 702                         elif test $mod_dst = 160000
 703                         then
 704                                 GIT_DIR="$name/.git" \
 705                                 git log --pretty='format:  > %s' -1 $sha1_dst
 706                         else
 707                                 GIT_DIR="$name/.git" \
 708                                 git log --pretty='format:  < %s' -1 $sha1_src
 709                         fi
 710                         echo
 711                 fi
 712                 echo
 713         done |
 714         if test -n "$for_status"; then
 715                 if [ -n "$files" ]; then
 716                         echo "# Submodules changed but not updated:"
 717                 else
 718                         echo "# Submodule changes to be committed:"
 719                 fi
 720                 echo "#"
 721                 sed -e 's|^|# |' -e 's|^# $|#|'
 722         else
 723                 cat
 724         fi
 725 }
 726 #
 727 # List all submodules, prefixed with:
 728 #  - submodule not initialized
 729 #  + different revision checked out
 730 #
 731 # If --cached was specified the revision in the index will be printed
 732 # instead of the currently checked out revision.
 733 #
 734 # $@ = requested paths (default to all)
 735 #
 736 cmd_status()
 737 {
 738         # parse $args after "submodule ... status".
 739         orig_flags=
 740         while test $# -ne 0
 741         do
 742                 case "$1" in
 743                 -q|--quiet)
 744                         GIT_QUIET=1
 745                         ;;
 746                 --cached)
 747                         cached=1
 748                         ;;
 749                 --recursive)
 750                         recursive=1
 751                         ;;
 752                 --)
 753                         shift
 754                         break
 755                         ;;
 756                 -*)
 757                         usage
 758                         ;;
 759                 *)
 760                         break
 761                         ;;
 762                 esac
 763                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 764                 shift
 765         done
 766
 767         module_list "$@" |
 768         while read mode sha1 stage path
 769         do
 770                 name=$(module_name "$path") || exit
 771                 url=$(git config submodule."$name".url)
 772                 displaypath="$prefix$path"
 773                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 774                 then
 775                         say "-$sha1 $displaypath"
 776                         continue;
 777                 fi
 778                 set_name_rev "$path" "$sha1"
 779                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 780                 then
 781                         say " $sha1 $displaypath$revname"
 782                 else
 783                         if test -z "$cached"
 784                         then
 785                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 786                                 set_name_rev "$path" "$sha1"
 787                         fi
 788                         say "+$sha1 $displaypath$revname"
 789                 fi
 790
 791                 if test -n "$recursive"
 792                 then
 793                         (
 794                                 prefix="$displaypath/"
 795                                 clear_local_git_env
 796                                 cd "$path" &&
 797                                 eval cmd_status "$orig_args"
 798                         ) ||
 799                         die "Failed to recurse into submodule path '$path'"
 800                 fi
 801         done
 802 }
 803 #
 804 # Sync remote urls for submodules
 805 # This makes the value for remote.$remote.url match the value
 806 # specified in .gitmodules.
 807 #
 808 cmd_sync()
 809 {
 810         while test $# -ne 0
 811         do
 812                 case "$1" in
 813                 -q|--quiet)
 814                         GIT_QUIET=1
 815                         shift
 816                         ;;
 817                 --)
 818                         shift
 819                         break
 820                         ;;
 821                 -*)
 822                         usage
 823                         ;;
 824                 *)
 825                         break
 826                         ;;
 827                 esac
 828         done
 829         cd_to_toplevel
 830         module_list "$@" |
 831         while read mode sha1 stage path
 832         do
 833                 name=$(module_name "$path")
 834                 url=$(git config -f .gitmodules --get submodule."$name".url)
 835
 836                 # Possibly a url relative to parent
 837                 case "$url" in
 838                 ./*|../*)
 839                         url=$(resolve_relative_url "$url") || exit
 840                         ;;
 841                 esac
 842
 843                 say "Synchronizing submodule url for '$name'"
 844                 git config submodule."$name".url "$url"
 845
 846                 if test -e "$path"/.git
 847                 then
 848                 (
 849                         clear_local_git_env
 850                         cd "$path"
 851                         remote=$(get_default_remote)
 852                         git config remote."$remote".url "$url"
 853                 )
 854                 fi
 855         done
 856 }
 857
 858 # This loop parses the command line arguments to find the
 859 # subcommand name to dispatch.  Parsing of the subcommand specific
 860 # options are primarily done by the subcommand implementations.
 861 # Subcommand specific options such as --branch and --cached are
 862 # parsed here as well, for backward compatibility.
 863
 864 while test $# != 0 && test -z "$command"
 865 do
 866         case "$1" in
 867         add | foreach | init | update | status | summary | sync)
 868                 command=$1
 869                 ;;
 870         -q|--quiet)
 871                 GIT_QUIET=1
 872                 ;;
 873         -b|--branch)
 874                 case "$2" in
 875                 '')
 876                         usage
 877                         ;;
 878                 esac
 879                 branch="$2"; shift
 880                 ;;
 881         --cached)
 882                 cached="$1"
 883                 ;;
 884         --)
 885                 break
 886                 ;;
 887         -*)
 888                 usage
 889                 ;;
 890         *)
 891                 break
 892                 ;;
 893         esac
 894         shift
 895 done
 896
 897 # No command word defaults to "status"
 898 test -n "$command" || command=status
 899
 900 # "-b branch" is accepted only by "add"
 901 if test -n "$branch" && test "$command" != add
 902 then
 903         usage
 904 fi
 905
 906 # "--cached" is accepted only by "status" and "summary"
 907 if test -n "$cached" && test "$command" != status -a "$command" != summary
 908 then
 909         usage
 910 fi
 911
 912 "cmd_$command" "$@"