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                 remoteurl=$(pwd) # the repository is its own authoritative upstream
  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         else
 247
 248                 module_clone "$path" "$realrepo" "$reference" || exit
 249                 (
 250                         clear_local_git_env
 251                         cd "$path" &&
 252                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 253                         case "$branch" in
 254                         '') git checkout -f -q ;;
 255                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 256                         esac
 257                 ) || die "Unable to checkout submodule '$path'"
 258         fi
 259         git config submodule."$path".url "$realrepo"
 260
 261         git add $force "$path" ||
 262         die "Failed to add submodule '$path'"
 263
 264         git config -f .gitmodules submodule."$path".path "$path" &&
 265         git config -f .gitmodules submodule."$path".url "$repo" &&
 266         git add --force .gitmodules ||
 267         die "Failed to register submodule '$path'"
 268 }
 269
 270 #
 271 # Execute an arbitrary command sequence in each checked out
 272 # submodule
 273 #
 274 # $@ = command to execute
 275 #
 276 cmd_foreach()
 277 {
 278         # parse $args after "submodule ... foreach".
 279         while test $# -ne 0
 280         do
 281                 case "$1" in
 282                 -q|--quiet)
 283                         GIT_QUIET=1
 284                         ;;
 285                 --recursive)
 286                         recursive=1
 287                         ;;
 288                 -*)
 289                         usage
 290                         ;;
 291                 *)
 292                         break
 293                         ;;
 294                 esac
 295                 shift
 296         done
 297
 298         toplevel=$(pwd)
 299
 300         # dup stdin so that it can be restored when running the external
 301         # command in the subshell (and a recursive call to this function)
 302         exec 3<&0
 303
 304         module_list |
 305         while read mode sha1 stage path
 306         do
 307                 if test -e "$path"/.git
 308                 then
 309                         say "Entering '$prefix$path'"
 310                         name=$(module_name "$path")
 311                         (
 312                                 prefix="$prefix$path/"
 313                                 clear_local_git_env
 314                                 cd "$path" &&
 315                                 eval "$@" &&
 316                                 if test -n "$recursive"
 317                                 then
 318                                         cmd_foreach "--recursive" "$@"
 319                                 fi
 320                         ) <&3 3<&- ||
 321                         die "Stopping at '$path'; script returned non-zero status."
 322                 fi
 323         done
 324 }
 325
 326 #
 327 # Register submodules in .git/config
 328 #
 329 # $@ = requested paths (default to all)
 330 #
 331 cmd_init()
 332 {
 333         # parse $args after "submodule ... init".
 334         while test $# -ne 0
 335         do
 336                 case "$1" in
 337                 -q|--quiet)
 338                         GIT_QUIET=1
 339                         ;;
 340                 --)
 341                         shift
 342                         break
 343                         ;;
 344                 -*)
 345                         usage
 346                         ;;
 347                 *)
 348                         break
 349                         ;;
 350                 esac
 351                 shift
 352         done
 353
 354         module_list "$@" |
 355         while read mode sha1 stage path
 356         do
 357                 # Skip already registered paths
 358                 name=$(module_name "$path") || exit
 359                 if test -z "$(git config "submodule.$name.url")"
 360                 then
 361                         url=$(git config -f .gitmodules submodule."$name".url)
 362                         test -z "$url" &&
 363                         die "No url found for submodule path '$path' in .gitmodules"
 364
 365                         # Possibly a url relative to parent
 366                         case "$url" in
 367                         ./*|../*)
 368                                 url=$(resolve_relative_url "$url") || exit
 369                                 ;;
 370                         esac
 371                         git config submodule."$name".url "$url" ||
 372                         die "Failed to register url for submodule path '$path'"
 373                 fi
 374
 375                 # Copy "update" setting when it is not set yet
 376                 upd="$(git config -f .gitmodules submodule."$name".update)"
 377                 test -z "$upd" ||
 378                 test -n "$(git config submodule."$name".update)" ||
 379                 git config submodule."$name".update "$upd" ||
 380                 die "Failed to register update mode for submodule path '$path'"
 381
 382                 say "Submodule '$name' ($url) registered for path '$path'"
 383         done
 384 }
 385
 386 #
 387 # Update each submodule path to correct revision, using clone and checkout as needed
 388 #
 389 # $@ = requested paths (default to all)
 390 #
 391 cmd_update()
 392 {
 393         # parse $args after "submodule ... update".
 394         orig_flags=
 395         while test $# -ne 0
 396         do
 397                 case "$1" in
 398                 -q|--quiet)
 399                         GIT_QUIET=1
 400                         ;;
 401                 -i|--init)
 402                         init=1
 403                         ;;
 404                 -N|--no-fetch)
 405                         nofetch=1
 406                         ;;
 407                 -f|--force)
 408                         force=$1
 409                         ;;
 410                 -r|--rebase)
 411                         update="rebase"
 412                         ;;
 413                 --reference)
 414                         case "$2" in '') usage ;; esac
 415                         reference="--reference=$2"
 416                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 417                         shift
 418                         ;;
 419                 --reference=*)
 420                         reference="$1"
 421                         ;;
 422                 -m|--merge)
 423                         update="merge"
 424                         ;;
 425                 --recursive)
 426                         recursive=1
 427                         ;;
 428                 --)
 429                         shift
 430                         break
 431                         ;;
 432                 -*)
 433                         usage
 434                         ;;
 435                 *)
 436                         break
 437                         ;;
 438                 esac
 439                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 440                 shift
 441         done
 442
 443         if test -n "$init"
 444         then
 445                 cmd_init "--" "$@" || return
 446         fi
 447
 448         cloned_modules=
 449         module_list "$@" |
 450         while read mode sha1 stage path
 451         do
 452                 if test "$stage" = U
 453                 then
 454                         echo >&2 "Skipping unmerged submodule $path"
 455                         continue
 456                 fi
 457                 name=$(module_name "$path") || exit
 458                 url=$(git config submodule."$name".url)
 459                 update_module=$(git config submodule."$name".update)
 460                 if test -z "$url"
 461                 then
 462                         # Only mention uninitialized submodules when its
 463                         # path have been specified
 464                         test "$#" != "0" &&
 465                         say "Submodule path '$path' not initialized" &&
 466                         say "Maybe you want to use 'update --init'?"
 467                         continue
 468                 fi
 469
 470                 if ! test -d "$path"/.git -o -f "$path"/.git
 471                 then
 472                         module_clone "$path" "$url" "$reference"|| exit
 473                         cloned_modules="$cloned_modules;$name"
 474                         subsha1=
 475                 else
 476                         subsha1=$(clear_local_git_env; cd "$path" &&
 477                                 git rev-parse --verify HEAD) ||
 478                         die "Unable to find current revision in submodule path '$path'"
 479                 fi
 480
 481                 if ! test -z "$update"
 482                 then
 483                         update_module=$update
 484                 fi
 485
 486                 if test "$subsha1" != "$sha1"
 487                 then
 488                         subforce=$force
 489                         # If we don't already have a -f flag and the submodule has never been checked out
 490                         if test -z "$subsha1" -a -z "$force"
 491                         then
 492                                 subforce="-f"
 493                         fi
 494
 495                         if test -z "$nofetch"
 496                         then
 497                                 # Run fetch only if $sha1 isn't present or it
 498                                 # is not reachable from a ref.
 499                                 (clear_local_git_env; cd "$path" &&
 500                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 501                                          test -z "$rev") || git-fetch)) ||
 502                                 die "Unable to fetch in submodule path '$path'"
 503                         fi
 504
 505                         # Is this something we just cloned?
 506                         case ";$cloned_modules;" in
 507                         *";$name;"*)
 508                                 # then there is no local change to integrate
 509                                 update_module= ;;
 510                         esac
 511
 512                         case "$update_module" in
 513                         rebase)
 514                                 command="git rebase"
 515                                 action="rebase"
 516                                 msg="rebased onto"
 517                                 ;;
 518                         merge)
 519                                 command="git merge"
 520                                 action="merge"
 521                                 msg="merged in"
 522                                 ;;
 523                         *)
 524                                 command="git checkout $subforce -q"
 525                                 action="checkout"
 526                                 msg="checked out"
 527                                 ;;
 528                         esac
 529
 530                         (clear_local_git_env; cd "$path" && $command "$sha1") ||
 531                         die "Unable to $action '$sha1' in submodule path '$path'"
 532                         say "Submodule path '$path': $msg '$sha1'"
 533                 fi
 534
 535                 if test -n "$recursive"
 536                 then
 537                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
 538                         die "Failed to recurse into submodule path '$path'"
 539                 fi
 540         done
 541 }
 542
 543 set_name_rev () {
 544         revname=$( (
 545                 clear_local_git_env
 546                 cd "$1" && {
 547                         git describe "$2" 2>/dev/null ||
 548                         git describe --tags "$2" 2>/dev/null ||
 549                         git describe --contains "$2" 2>/dev/null ||
 550                         git describe --all --always "$2"
 551                 }
 552         ) )
 553         test -z "$revname" || revname=" ($revname)"
 554 }
 555 #
 556 # Show commit summary for submodules in index or working tree
 557 #
 558 # If '--cached' is given, show summary between index and given commit,
 559 # or between working tree and given commit
 560 #
 561 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 562 #
 563 cmd_summary() {
 564         summary_limit=-1
 565         for_status=
 566         diff_cmd=diff-index
 567
 568         # parse $args after "submodule ... summary".
 569         while test $# -ne 0
 570         do
 571                 case "$1" in
 572                 --cached)
 573                         cached="$1"
 574                         ;;
 575                 --files)
 576                         files="$1"
 577                         ;;
 578                 --for-status)
 579                         for_status="$1"
 580                         ;;
 581                 -n|--summary-limit)
 582                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 583                         then
 584                                 :
 585                         else
 586                                 usage
 587                         fi
 588                         shift
 589                         ;;
 590                 --)
 591                         shift
 592                         break
 593                         ;;
 594                 -*)
 595                         usage
 596                         ;;
 597                 *)
 598                         break
 599                         ;;
 600                 esac
 601                 shift
 602         done
 603
 604         test $summary_limit = 0 && return
 605
 606         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 607         then
 608                 head=$rev
 609                 test $# = 0 || shift
 610         elif test -z "$1" -o "$1" = "HEAD"
 611         then
 612                 # before the first commit: compare with an empty tree
 613                 head=$(git hash-object -w -t tree --stdin </dev/null)
 614                 test -z "$1" || shift
 615         else
 616                 head="HEAD"
 617         fi
 618
 619         if [ -n "$files" ]
 620         then
 621                 test -n "$cached" &&
 622                 die "--cached cannot be used with --files"
 623                 diff_cmd=diff-files
 624                 head=
 625         fi
 626
 627         cd_to_toplevel
 628         # Get modified modules cared by user
 629         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 630                 sane_egrep '^:([0-7]* )?160000' |
 631                 while read mod_src mod_dst sha1_src sha1_dst status name
 632                 do
 633                         # Always show modules deleted or type-changed (blob<->module)
 634                         test $status = D -o $status = T && echo "$name" && continue
 635                         # Also show added or modified modules which are checked out
 636                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 637                         echo "$name"
 638                 done
 639         )
 640
 641         test -z "$modules" && return
 642
 643         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 644         sane_egrep '^:([0-7]* )?160000' |
 645         cut -c2- |
 646         while read mod_src mod_dst sha1_src sha1_dst status name
 647         do
 648                 if test -z "$cached" &&
 649                         test $sha1_dst = 0000000000000000000000000000000000000000
 650                 then
 651                         case "$mod_dst" in
 652                         160000)
 653                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 654                                 ;;
 655                         100644 | 100755 | 120000)
 656                                 sha1_dst=$(git hash-object $name)
 657                                 ;;
 658                         000000)
 659                                 ;; # removed
 660                         *)
 661                                 # unexpected type
 662                                 echo >&2 "unexpected mode $mod_dst"
 663                                 continue ;;
 664                         esac
 665                 fi
 666                 missing_src=
 667                 missing_dst=
 668
 669                 test $mod_src = 160000 &&
 670                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 671                 missing_src=t
 672
 673                 test $mod_dst = 160000 &&
 674                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 675                 missing_dst=t
 676
 677                 total_commits=
 678                 case "$missing_src,$missing_dst" in
 679                 t,)
 680                         errmsg="  Warn: $name doesn't contain commit $sha1_src"
 681                         ;;
 682                 ,t)
 683                         errmsg="  Warn: $name doesn't contain commit $sha1_dst"
 684                         ;;
 685                 t,t)
 686                         errmsg="  Warn: $name doesn't contain commits $sha1_src and $sha1_dst"
 687                         ;;
 688                 *)
 689                         errmsg=
 690                         total_commits=$(
 691                         if test $mod_src = 160000 -a $mod_dst = 160000
 692                         then
 693                                 range="$sha1_src...$sha1_dst"
 694                         elif test $mod_src = 160000
 695                         then
 696                                 range=$sha1_src
 697                         else
 698                                 range=$sha1_dst
 699                         fi
 700                         GIT_DIR="$name/.git" \
 701                         git rev-list --first-parent $range -- | wc -l
 702                         )
 703                         total_commits=" ($(($total_commits + 0)))"
 704                         ;;
 705                 esac
 706
 707                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 708                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 709                 if test $status = T
 710                 then
 711                         if test $mod_dst = 160000
 712                         then
 713                                 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
 714                         else
 715                                 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
 716                         fi
 717                 else
 718                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 719                 fi
 720                 if test -n "$errmsg"
 721                 then
 722                         # Don't give error msg for modification whose dst is not submodule
 723                         # i.e. deleted or changed to blob
 724                         test $mod_dst = 160000 && echo "$errmsg"
 725                 else
 726                         if test $mod_src = 160000 -a $mod_dst = 160000
 727                         then
 728                                 limit=
 729                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 730                                 GIT_DIR="$name/.git" \
 731                                 git log $limit --pretty='format:  %m %s' \
 732                                 --first-parent $sha1_src...$sha1_dst
 733                         elif test $mod_dst = 160000
 734                         then
 735                                 GIT_DIR="$name/.git" \
 736                                 git log --pretty='format:  > %s' -1 $sha1_dst
 737                         else
 738                                 GIT_DIR="$name/.git" \
 739                                 git log --pretty='format:  < %s' -1 $sha1_src
 740                         fi
 741                         echo
 742                 fi
 743                 echo
 744         done |
 745         if test -n "$for_status"; then
 746                 if [ -n "$files" ]; then
 747                         echo "# Submodules changed but not updated:"
 748                 else
 749                         echo "# Submodule changes to be committed:"
 750                 fi
 751                 echo "#"
 752                 sed -e 's|^|# |' -e 's|^# $|#|'
 753         else
 754                 cat
 755         fi
 756 }
 757 #
 758 # List all submodules, prefixed with:
 759 #  - submodule not initialized
 760 #  + different revision checked out
 761 #
 762 # If --cached was specified the revision in the index will be printed
 763 # instead of the currently checked out revision.
 764 #
 765 # $@ = requested paths (default to all)
 766 #
 767 cmd_status()
 768 {
 769         # parse $args after "submodule ... status".
 770         orig_flags=
 771         while test $# -ne 0
 772         do
 773                 case "$1" in
 774                 -q|--quiet)
 775                         GIT_QUIET=1
 776                         ;;
 777                 --cached)
 778                         cached=1
 779                         ;;
 780                 --recursive)
 781                         recursive=1
 782                         ;;
 783                 --)
 784                         shift
 785                         break
 786                         ;;
 787                 -*)
 788                         usage
 789                         ;;
 790                 *)
 791                         break
 792                         ;;
 793                 esac
 794                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 795                 shift
 796         done
 797
 798         module_list "$@" |
 799         while read mode sha1 stage path
 800         do
 801                 name=$(module_name "$path") || exit
 802                 url=$(git config submodule."$name".url)
 803                 displaypath="$prefix$path"
 804                 if test "$stage" = U
 805                 then
 806                         say "U$sha1 $displaypath"
 807                         continue
 808                 fi
 809                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 810                 then
 811                         say "-$sha1 $displaypath"
 812                         continue;
 813                 fi
 814                 set_name_rev "$path" "$sha1"
 815                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 816                 then
 817                         say " $sha1 $displaypath$revname"
 818                 else
 819                         if test -z "$cached"
 820                         then
 821                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 822                                 set_name_rev "$path" "$sha1"
 823                         fi
 824                         say "+$sha1 $displaypath$revname"
 825                 fi
 826
 827                 if test -n "$recursive"
 828                 then
 829                         (
 830                                 prefix="$displaypath/"
 831                                 clear_local_git_env
 832                                 cd "$path" &&
 833                                 eval cmd_status "$orig_args"
 834                         ) ||
 835                         die "Failed to recurse into submodule path '$path'"
 836                 fi
 837         done
 838 }
 839 #
 840 # Sync remote urls for submodules
 841 # This makes the value for remote.$remote.url match the value
 842 # specified in .gitmodules.
 843 #
 844 cmd_sync()
 845 {
 846         while test $# -ne 0
 847         do
 848                 case "$1" in
 849                 -q|--quiet)
 850                         GIT_QUIET=1
 851                         shift
 852                         ;;
 853                 --)
 854                         shift
 855                         break
 856                         ;;
 857                 -*)
 858                         usage
 859                         ;;
 860                 *)
 861                         break
 862                         ;;
 863                 esac
 864         done
 865         cd_to_toplevel
 866         module_list "$@" |
 867         while read mode sha1 stage path
 868         do
 869                 name=$(module_name "$path")
 870                 url=$(git config -f .gitmodules --get submodule."$name".url)
 871
 872                 # Possibly a url relative to parent
 873                 case "$url" in
 874                 ./*|../*)
 875                         url=$(resolve_relative_url "$url") || exit
 876                         ;;
 877                 esac
 878
 879                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
 880                 then
 881                         say "Synchronizing submodule url for '$name'"
 882                         git config submodule."$name".url "$url"
 883
 884                         if test -e "$path"/.git
 885                         then
 886                         (
 887                                 clear_local_git_env
 888                                 cd "$path"
 889                                 remote=$(get_default_remote)
 890                                 git config remote."$remote".url "$url"
 891                         )
 892                         fi
 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" "$@"