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] [-f|--force] [--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 # $@ = path to limit submodule list
  72 #
  73 module_list()
  74 {
  75         git ls-files --error-unmatch --stage -- "$@" |
  76         perl -e '
  77         my %unmerged = ();
  78         my ($null_sha1) = ("0" x 40);
  79         while (<STDIN>) {
  80                 chomp;
  81                 my ($mode, $sha1, $stage, $path) =
  82                         /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
  83                 next unless $mode eq "160000";
  84                 if ($stage ne "0") {
  85                         if (!$unmerged{$path}++) {
  86                                 print "$mode $null_sha1 U\t$path\n";
  87                         }
  88                         next;
  89                 }
  90                 print "$_\n";
  91         }
  92         '
  93 }
  94
  95 #
  96 # Map submodule path to submodule name
  97 #
  98 # $1 = path
  99 #
 100 module_name()
 101 {
 102         # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
 103         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 104         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 105                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 106        test -z "$name" &&
 107        die "No submodule mapping found in .gitmodules for path '$path'"
 108        echo "$name"
 109 }
 110
 111 #
 112 # Clone a submodule
 113 #
 114 # Prior to calling, cmd_update checks that a possibly existing
 115 # path is not a git repository.
 116 # Likewise, cmd_add checks that path does not exist at all,
 117 # since it is the location of a new submodule.
 118 #
 119 module_clone()
 120 {
 121         path=$1
 122         url=$2
 123         reference="$3"
 124         quiet=
 125         if test -n "$GIT_QUIET"
 126         then
 127                 quiet=-q
 128         fi
 129
 130         if test -n "$reference"
 131         then
 132                 git-clone $quiet "$reference" -n "$url" "$path"
 133         else
 134                 git-clone $quiet -n "$url" "$path"
 135         fi ||
 136         die "Clone of '$url' into submodule path '$path' failed"
 137 }
 138
 139 #
 140 # Add a new submodule to the working tree, .gitmodules and the index
 141 #
 142 # $@ = repo path
 143 #
 144 # optional branch is stored in global branch variable
 145 #
 146 cmd_add()
 147 {
 148         # parse $args after "submodule ... add".
 149         while test $# -ne 0
 150         do
 151                 case "$1" in
 152                 -b | --branch)
 153                         case "$2" in '') usage ;; esac
 154                         branch=$2
 155                         shift
 156                         ;;
 157                 -f | --force)
 158                         force=$1
 159                         ;;
 160                 -q|--quiet)
 161                         GIT_QUIET=1
 162                         ;;
 163                 --reference)
 164                         case "$2" in '') usage ;; esac
 165                         reference="--reference=$2"
 166                         shift
 167                         ;;
 168                 --reference=*)
 169                         reference="$1"
 170                         shift
 171                         ;;
 172                 --)
 173                         shift
 174                         break
 175                         ;;
 176                 -*)
 177                         usage
 178                         ;;
 179                 *)
 180                         break
 181                         ;;
 182                 esac
 183                 shift
 184         done
 185
 186         repo=$1
 187         path=$2
 188
 189         if test -z "$path"; then
 190                 path=$(echo "$repo" |
 191                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 192         fi
 193
 194         if test -z "$repo" -o -z "$path"; then
 195                 usage
 196         fi
 197
 198         # assure repo is absolute or relative to parent
 199         case "$repo" in
 200         ./*|../*)
 201                 # dereference source url relative to parent's url
 202                 realrepo=$(resolve_relative_url "$repo") || exit
 203                 ;;
 204         *:*|/*)
 205                 # absolute url
 206                 realrepo=$repo
 207                 ;;
 208         *)
 209                 die "repo URL: '$repo' must be absolute or begin with ./|../"
 210         ;;
 211         esac
 212
 213         # normalize path:
 214         # multiple //; leading ./; /./; /../; trailing /
 215         path=$(printf '%s/\n' "$path" |
 216                 sed -e '
 217                         s|//*|/|g
 218                         s|^\(\./\)*||
 219                         s|/\./|/|g
 220                         :start
 221                         s|\([^/]*\)/\.\./||
 222                         tstart
 223                         s|/*$||
 224                 ')
 225         git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
 226         die "'$path' already exists in the index"
 227
 228         if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
 229         then
 230                 echo >&2 "The following path is ignored by one of your .gitignore files:" &&
 231                 echo >&2 $path &&
 232                 echo >&2 "Use -f if you really want to add it."
 233                 exit 1
 234         fi
 235
 236         # perhaps the path exists and is already a git repo, else clone it
 237         if test -e "$path"
 238         then
 239                 if test -d "$path"/.git -o -f "$path"/.git
 240                 then
 241                         echo "Adding existing repo at '$path' to the index"
 242                 else
 243                         die "'$path' already exists and is not a valid git repo"
 244                 fi
 245
 246                 case "$repo" in
 247                 ./*|../*)
 248                         url=$(resolve_relative_url "$repo") || exit
 249                     ;;
 250                 *)
 251                         url="$repo"
 252                         ;;
 253                 esac
 254                 git config submodule."$path".url "$url"
 255         else
 256
 257                 module_clone "$path" "$realrepo" "$reference" || exit
 258                 (
 259                         clear_local_git_env
 260                         cd "$path" &&
 261                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 262                         case "$branch" in
 263                         '') git checkout -f -q ;;
 264                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 265                         esac
 266                 ) || die "Unable to checkout submodule '$path'"
 267         fi
 268
 269         git add $force "$path" ||
 270         die "Failed to add submodule '$path'"
 271
 272         git config -f .gitmodules submodule."$path".path "$path" &&
 273         git config -f .gitmodules submodule."$path".url "$repo" &&
 274         git add --force .gitmodules ||
 275         die "Failed to register submodule '$path'"
 276 }
 277
 278 #
 279 # Execute an arbitrary command sequence in each checked out
 280 # submodule
 281 #
 282 # $@ = command to execute
 283 #
 284 cmd_foreach()
 285 {
 286         # parse $args after "submodule ... foreach".
 287         while test $# -ne 0
 288         do
 289                 case "$1" in
 290                 -q|--quiet)
 291                         GIT_QUIET=1
 292                         ;;
 293                 --recursive)
 294                         recursive=1
 295                         ;;
 296                 -*)
 297                         usage
 298                         ;;
 299                 *)
 300                         break
 301                         ;;
 302                 esac
 303                 shift
 304         done
 305
 306         toplevel=$(pwd)
 307
 308         module_list |
 309         while read mode sha1 stage path
 310         do
 311                 if test -e "$path"/.git
 312                 then
 313                         say "Entering '$prefix$path'"
 314                         name=$(module_name "$path")
 315                         (
 316                                 prefix="$prefix$path/"
 317                                 clear_local_git_env
 318                                 cd "$path" &&
 319                                 eval "$@" &&
 320                                 if test -n "$recursive"
 321                                 then
 322                                         cmd_foreach "--recursive" "$@"
 323                                 fi
 324                         ) ||
 325                         die "Stopping at '$path'; script returned non-zero status."
 326                 fi
 327         done
 328 }
 329
 330 #
 331 # Register submodules in .git/config
 332 #
 333 # $@ = requested paths (default to all)
 334 #
 335 cmd_init()
 336 {
 337         # parse $args after "submodule ... init".
 338         while test $# -ne 0
 339         do
 340                 case "$1" in
 341                 -q|--quiet)
 342                         GIT_QUIET=1
 343                         ;;
 344                 --)
 345                         shift
 346                         break
 347                         ;;
 348                 -*)
 349                         usage
 350                         ;;
 351                 *)
 352                         break
 353                         ;;
 354                 esac
 355                 shift
 356         done
 357
 358         module_list "$@" |
 359         while read mode sha1 stage path
 360         do
 361                 # Skip already registered paths
 362                 name=$(module_name "$path") || exit
 363                 url=$(git config submodule."$name".url)
 364                 test -z "$url" || continue
 365
 366                 url=$(git config -f .gitmodules submodule."$name".url)
 367                 test -z "$url" &&
 368                 die "No url found for submodule path '$path' in .gitmodules"
 369
 370                 # Possibly a url relative to parent
 371                 case "$url" in
 372                 ./*|../*)
 373                         url=$(resolve_relative_url "$url") || exit
 374                         ;;
 375                 esac
 376
 377                 git config submodule."$name".url "$url" ||
 378                 die "Failed to register url for submodule path '$path'"
 379
 380                 upd="$(git config -f .gitmodules submodule."$name".update)"
 381                 test -z "$upd" ||
 382                 git config submodule."$name".update "$upd" ||
 383                 die "Failed to register update mode for submodule path '$path'"
 384
 385                 say "Submodule '$name' ($url) registered for path '$path'"
 386         done
 387 }
 388
 389 #
 390 # Update each submodule path to correct revision, using clone and checkout as needed
 391 #
 392 # $@ = requested paths (default to all)
 393 #
 394 cmd_update()
 395 {
 396         # parse $args after "submodule ... update".
 397         orig_flags=
 398         while test $# -ne 0
 399         do
 400                 case "$1" in
 401                 -q|--quiet)
 402                         GIT_QUIET=1
 403                         ;;
 404                 -i|--init)
 405                         init=1
 406                         ;;
 407                 -N|--no-fetch)
 408                         nofetch=1
 409                         ;;
 410                 -f|--force)
 411                         force=$1
 412                         ;;
 413                 -r|--rebase)
 414                         update="rebase"
 415                         ;;
 416                 --reference)
 417                         case "$2" in '') usage ;; esac
 418                         reference="--reference=$2"
 419                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 420                         shift
 421                         ;;
 422                 --reference=*)
 423                         reference="$1"
 424                         ;;
 425                 -m|--merge)
 426                         update="merge"
 427                         ;;
 428                 --recursive)
 429                         recursive=1
 430                         ;;
 431                 --)
 432                         shift
 433                         break
 434                         ;;
 435                 -*)
 436                         usage
 437                         ;;
 438                 *)
 439                         break
 440                         ;;
 441                 esac
 442                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 443                 shift
 444         done
 445
 446         if test -n "$init"
 447         then
 448                 cmd_init "--" "$@" || return
 449         fi
 450
 451         cloned_modules=
 452         module_list "$@" |
 453         while read mode sha1 stage path
 454         do
 455                 if test "$stage" = U
 456                 then
 457                         echo >&2 "Skipping unmerged submodule $path"
 458                         continue
 459                 fi
 460                 name=$(module_name "$path") || exit
 461                 url=$(git config submodule."$name".url)
 462                 update_module=$(git config submodule."$name".update)
 463                 if test -z "$url"
 464                 then
 465                         # Only mention uninitialized submodules when its
 466                         # path have been specified
 467                         test "$#" != "0" &&
 468                         say "Submodule path '$path' not initialized" &&
 469                         say "Maybe you want to use 'update --init'?"
 470                         continue
 471                 fi
 472
 473                 if ! test -d "$path"/.git -o -f "$path"/.git
 474                 then
 475                         module_clone "$path" "$url" "$reference"|| exit
 476                         cloned_modules="$cloned_modules;$name"
 477                         subsha1=
 478                 else
 479                         subsha1=$(clear_local_git_env; cd "$path" &&
 480                                 git rev-parse --verify HEAD) ||
 481                         die "Unable to find current revision in submodule path '$path'"
 482                 fi
 483
 484                 if ! test -z "$update"
 485                 then
 486                         update_module=$update
 487                 fi
 488
 489                 if test "$subsha1" != "$sha1"
 490                 then
 491                         subforce=$force
 492                         # If we don't already have a -f flag and the submodule has never been checked out
 493                         if test -z "$subsha1" -a -z "$force"
 494                         then
 495                                 subforce="-f"
 496                         fi
 497
 498                         if test -z "$nofetch"
 499                         then
 500                                 # Run fetch only if $sha1 isn't present or it
 501                                 # is not reachable from a ref.
 502                                 (clear_local_git_env; cd "$path" &&
 503                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 504                                          test -z "$rev") || git-fetch)) ||
 505                                 die "Unable to fetch in submodule path '$path'"
 506                         fi
 507
 508                         # Is this something we just cloned?
 509                         case ";$cloned_modules;" in
 510                         *";$name;"*)
 511                                 # then there is no local change to integrate
 512                                 update_module= ;;
 513                         esac
 514
 515                         case "$update_module" in
 516                         rebase)
 517                                 command="git rebase"
 518                                 action="rebase"
 519                                 msg="rebased onto"
 520                                 ;;
 521                         merge)
 522                                 command="git merge"
 523                                 action="merge"
 524                                 msg="merged in"
 525                                 ;;
 526                         *)
 527                                 command="git checkout $subforce -q"
 528                                 action="checkout"
 529                                 msg="checked out"
 530                                 ;;
 531                         esac
 532
 533                         (clear_local_git_env; cd "$path" && $command "$sha1") ||
 534                         die "Unable to $action '$sha1' in submodule path '$path'"
 535                         say "Submodule path '$path': $msg '$sha1'"
 536                 fi
 537
 538                 if test -n "$recursive"
 539                 then
 540                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
 541                         die "Failed to recurse into submodule path '$path'"
 542                 fi
 543         done
 544 }
 545
 546 set_name_rev () {
 547         revname=$( (
 548                 clear_local_git_env
 549                 cd "$1" && {
 550                         git describe "$2" 2>/dev/null ||
 551                         git describe --tags "$2" 2>/dev/null ||
 552                         git describe --contains "$2" 2>/dev/null ||
 553                         git describe --all --always "$2"
 554                 }
 555         ) )
 556         test -z "$revname" || revname=" ($revname)"
 557 }
 558 #
 559 # Show commit summary for submodules in index or working tree
 560 #
 561 # If '--cached' is given, show summary between index and given commit,
 562 # or between working tree and given commit
 563 #
 564 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 565 #
 566 cmd_summary() {
 567         summary_limit=-1
 568         for_status=
 569         diff_cmd=diff-index
 570
 571         # parse $args after "submodule ... summary".
 572         while test $# -ne 0
 573         do
 574                 case "$1" in
 575                 --cached)
 576                         cached="$1"
 577                         ;;
 578                 --files)
 579                         files="$1"
 580                         ;;
 581                 --for-status)
 582                         for_status="$1"
 583                         ;;
 584                 -n|--summary-limit)
 585                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 586                         then
 587                                 :
 588                         else
 589                                 usage
 590                         fi
 591                         shift
 592                         ;;
 593                 --)
 594                         shift
 595                         break
 596                         ;;
 597                 -*)
 598                         usage
 599                         ;;
 600                 *)
 601                         break
 602                         ;;
 603                 esac
 604                 shift
 605         done
 606
 607         test $summary_limit = 0 && return
 608
 609         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 610         then
 611                 head=$rev
 612                 test $# = 0 || shift
 613         elif test -z "$1" -o "$1" = "HEAD"
 614         then
 615                 # before the first commit: compare with an empty tree
 616                 head=$(git hash-object -w -t tree --stdin </dev/null)
 617                 test -z "$1" || shift
 618         else
 619                 head="HEAD"
 620         fi
 621
 622         if [ -n "$files" ]
 623         then
 624                 test -n "$cached" &&
 625                 die "--cached cannot be used with --files"
 626                 diff_cmd=diff-files
 627                 head=
 628         fi
 629
 630         cd_to_toplevel
 631         # Get modified modules cared by user
 632         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 633                 sane_egrep '^:([0-7]* )?160000' |
 634                 while read mod_src mod_dst sha1_src sha1_dst status name
 635                 do
 636                         # Always show modules deleted or type-changed (blob<->module)
 637                         test $status = D -o $status = T && echo "$name" && continue
 638                         # Also show added or modified modules which are checked out
 639                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 640                         echo "$name"
 641                 done
 642         )
 643
 644         test -z "$modules" && return
 645
 646         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 647         sane_egrep '^:([0-7]* )?160000' |
 648         cut -c2- |
 649         while read mod_src mod_dst sha1_src sha1_dst status name
 650         do
 651                 if test -z "$cached" &&
 652                         test $sha1_dst = 0000000000000000000000000000000000000000
 653                 then
 654                         case "$mod_dst" in
 655                         160000)
 656                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 657                                 ;;
 658                         100644 | 100755 | 120000)
 659                                 sha1_dst=$(git hash-object $name)
 660                                 ;;
 661                         000000)
 662                                 ;; # removed
 663                         *)
 664                                 # unexpected type
 665                                 echo >&2 "unexpected mode $mod_dst"
 666                                 continue ;;
 667                         esac
 668                 fi
 669                 missing_src=
 670                 missing_dst=
 671
 672                 test $mod_src = 160000 &&
 673                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 674                 missing_src=t
 675
 676                 test $mod_dst = 160000 &&
 677                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 678                 missing_dst=t
 679
 680                 total_commits=
 681                 case "$missing_src,$missing_dst" in
 682                 t,)
 683                         errmsg="  Warn: $name doesn't contain commit $sha1_src"
 684                         ;;
 685                 ,t)
 686                         errmsg="  Warn: $name doesn't contain commit $sha1_dst"
 687                         ;;
 688                 t,t)
 689                         errmsg="  Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
 690                         ;;
 691                 *)
 692                         errmsg=
 693                         total_commits=$(
 694                         if test $mod_src = 160000 -a $mod_dst = 160000
 695                         then
 696                                 range="$sha1_src...$sha1_dst"
 697                         elif test $mod_src = 160000
 698                         then
 699                                 range=$sha1_src
 700                         else
 701                                 range=$sha1_dst
 702                         fi
 703                         GIT_DIR="$name/.git" \
 704                         git rev-list --first-parent $range -- | wc -l
 705                         )
 706                         total_commits=" ($(($total_commits + 0)))"
 707                         ;;
 708                 esac
 709
 710                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 711                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 712                 if test $status = T
 713                 then
 714                         if test $mod_dst = 160000
 715                         then
 716                                 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
 717                         else
 718                                 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
 719                         fi
 720                 else
 721                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 722                 fi
 723                 if test -n "$errmsg"
 724                 then
 725                         # Don't give error msg for modification whose dst is not submodule
 726                         # i.e. deleted or changed to blob
 727                         test $mod_dst = 160000 && echo "$errmsg"
 728                 else
 729                         if test $mod_src = 160000 -a $mod_dst = 160000
 730                         then
 731                                 limit=
 732                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 733                                 GIT_DIR="$name/.git" \
 734                                 git log $limit --pretty='format:  %m %s' \
 735                                 --first-parent $sha1_src...$sha1_dst
 736                         elif test $mod_dst = 160000
 737                         then
 738                                 GIT_DIR="$name/.git" \
 739                                 git log --pretty='format:  > %s' -1 $sha1_dst
 740                         else
 741                                 GIT_DIR="$name/.git" \
 742                                 git log --pretty='format:  < %s' -1 $sha1_src
 743                         fi
 744                         echo
 745                 fi
 746                 echo
 747         done |
 748         if test -n "$for_status"; then
 749                 if [ -n "$files" ]; then
 750                         echo "# Submodules changed but not updated:"
 751                 else
 752                         echo "# Submodule changes to be committed:"
 753                 fi
 754                 echo "#"
 755                 sed -e 's|^|# |' -e 's|^# $|#|'
 756         else
 757                 cat
 758         fi
 759 }
 760 #
 761 # List all submodules, prefixed with:
 762 #  - submodule not initialized
 763 #  + different revision checked out
 764 #
 765 # If --cached was specified the revision in the index will be printed
 766 # instead of the currently checked out revision.
 767 #
 768 # $@ = requested paths (default to all)
 769 #
 770 cmd_status()
 771 {
 772         # parse $args after "submodule ... status".
 773         orig_flags=
 774         while test $# -ne 0
 775         do
 776                 case "$1" in
 777                 -q|--quiet)
 778                         GIT_QUIET=1
 779                         ;;
 780                 --cached)
 781                         cached=1
 782                         ;;
 783                 --recursive)
 784                         recursive=1
 785                         ;;
 786                 --)
 787                         shift
 788                         break
 789                         ;;
 790                 -*)
 791                         usage
 792                         ;;
 793                 *)
 794                         break
 795                         ;;
 796                 esac
 797                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 798                 shift
 799         done
 800
 801         module_list "$@" |
 802         while read mode sha1 stage path
 803         do
 804                 name=$(module_name "$path") || exit
 805                 url=$(git config submodule."$name".url)
 806                 displaypath="$prefix$path"
 807                 if test "$stage" = U
 808                 then
 809                         say "U$sha1 $displaypath"
 810                         continue
 811                 fi
 812                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 813                 then
 814                         say "-$sha1 $displaypath"
 815                         continue;
 816                 fi
 817                 set_name_rev "$path" "$sha1"
 818                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 819                 then
 820                         say " $sha1 $displaypath$revname"
 821                 else
 822                         if test -z "$cached"
 823                         then
 824                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 825                                 set_name_rev "$path" "$sha1"
 826                         fi
 827                         say "+$sha1 $displaypath$revname"
 828                 fi
 829
 830                 if test -n "$recursive"
 831                 then
 832                         (
 833                                 prefix="$displaypath/"
 834                                 clear_local_git_env
 835                                 cd "$path" &&
 836                                 eval cmd_status "$orig_args"
 837                         ) ||
 838                         die "Failed to recurse into submodule path '$path'"
 839                 fi
 840         done
 841 }
 842 #
 843 # Sync remote urls for submodules
 844 # This makes the value for remote.$remote.url match the value
 845 # specified in .gitmodules.
 846 #
 847 cmd_sync()
 848 {
 849         while test $# -ne 0
 850         do
 851                 case "$1" in
 852                 -q|--quiet)
 853                         GIT_QUIET=1
 854                         shift
 855                         ;;
 856                 --)
 857                         shift
 858                         break
 859                         ;;
 860                 -*)
 861                         usage
 862                         ;;
 863                 *)
 864                         break
 865                         ;;
 866                 esac
 867         done
 868         cd_to_toplevel
 869         module_list "$@" |
 870         while read mode sha1 stage path
 871         do
 872                 name=$(module_name "$path")
 873                 url=$(git config -f .gitmodules --get submodule."$name".url)
 874
 875                 # Possibly a url relative to parent
 876                 case "$url" in
 877                 ./*|../*)
 878                         url=$(resolve_relative_url "$url") || exit
 879                         ;;
 880                 esac
 881
 882                 say "Synchronizing submodule url for '$name'"
 883                 git config submodule."$name".url "$url"
 884
 885                 if test -e "$path"/.git
 886                 then
 887                 (
 888                         clear_local_git_env
 889                         cd "$path"
 890                         remote=$(get_default_remote)
 891                         git config remote."$remote".url "$url"
 892                 )
 893                 fi
 894         done
 895 }
 896
 897 # This loop parses the command line arguments to find the
 898 # subcommand name to dispatch.  Parsing of the subcommand specific
 899 # options are primarily done by the subcommand implementations.
 900 # Subcommand specific options such as --branch and --cached are
 901 # parsed here as well, for backward compatibility.
 902
 903 while test $# != 0 && test -z "$command"
 904 do
 905         case "$1" in
 906         add | foreach | init | update | status | summary | sync)
 907                 command=$1
 908                 ;;
 909         -q|--quiet)
 910                 GIT_QUIET=1
 911                 ;;
 912         -b|--branch)
 913                 case "$2" in
 914                 '')
 915                         usage
 916                         ;;
 917                 esac
 918                 branch="$2"; shift
 919                 ;;
 920         --cached)
 921                 cached="$1"
 922                 ;;
 923         --)
 924                 break
 925                 ;;
 926         -*)
 927                 usage
 928                 ;;
 929         *)
 930                 break
 931                 ;;
 932         esac
 933         shift
 934 done
 935
 936 # No command word defaults to "status"
 937 test -n "$command" || command=status
 938
 939 # "-b branch" is accepted only by "add"
 940 if test -n "$branch" && test "$command" != add
 941 then
 942         usage
 943 fi
 944
 945 # "--cached" is accepted only by "status" and "summary"
 946 if test -n "$cached" && test "$command" != status -a "$command" != summary
 947 then
 948         usage
 949 fi
 950
 951 "cmd_$command" "$@"