git.oblomov.eu Git - git/blob - 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: $dashless [--quiet] sync [--] [<path>...]"
  15 OPTIONS_SPEC=
  16 . git-sh-setup
  17 . git-sh-i18n
  18 . git-parse-remote
  19 require_work_tree
  20
  21 command=
  22 branch=
  23 force=
  24 reference=
  25 cached=
  26 recursive=
  27 init=
  28 files=
  29 nofetch=
  30 update=
  31 prefix=
  32
  33 # Resolve relative url by appending to parent's url
  34 resolve_relative_url ()
  35 {
  36         remote=$(get_default_remote)
  37         remoteurl=$(git config "remote.$remote.url") ||
  38                 die "$(eval_gettext "remote (\$remote) does not have a url defined in .git/config")"
  39         url="$1"
  40         remoteurl=${remoteurl%/}
  41         sep=/
  42         while test -n "$url"
  43         do
  44                 case "$url" in
  45                 ../*)
  46                         url="${url#../}"
  47                         case "$remoteurl" in
  48                         */*)
  49                                 remoteurl="${remoteurl%/*}"
  50                                 ;;
  51                         *:*)
  52                                 remoteurl="${remoteurl%:*}"
  53                                 sep=:
  54                                 ;;
  55                         *)
  56                                 die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
  57                                 ;;
  58                         esac
  59                         ;;
  60                 ./*)
  61                         url="${url#./}"
  62                         ;;
  63                 *)
  64                         break;;
  65                 esac
  66         done
  67         echo "$remoteurl$sep${url%/}"
  68 }
  69
  70 #
  71 # Get submodule info for registered submodules
  72 # $@ = path to limit submodule list
  73 #
  74 module_list()
  75 {
  76         git ls-files --error-unmatch --stage -- "$@" |
  77         perl -e '
  78         my %unmerged = ();
  79         my ($null_sha1) = ("0" x 40);
  80         while (<STDIN>) {
  81                 chomp;
  82                 my ($mode, $sha1, $stage, $path) =
  83                         /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
  84                 next unless $mode eq "160000";
  85                 if ($stage ne "0") {
  86                         if (!$unmerged{$path}++) {
  87                                 print "$mode $null_sha1 U\t$path\n";
  88                         }
  89                         next;
  90                 }
  91                 print "$_\n";
  92         }
  93         '
  94 }
  95
  96 #
  97 # Map submodule path to submodule name
  98 #
  99 # $1 = path
 100 #
 101 module_name()
 102 {
 103         # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
 104         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 105         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 106                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 107        test -z "$name" &&
 108        die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$path'")"
 109        echo "$name"
 110 }
 111
 112 #
 113 # Clone a submodule
 114 #
 115 # Prior to calling, cmd_update checks that a possibly existing
 116 # path is not a git repository.
 117 # Likewise, cmd_add checks that path does not exist at all,
 118 # since it is the location of a new submodule.
 119 #
 120 module_clone()
 121 {
 122         path=$1
 123         url=$2
 124         reference="$3"
 125
 126         if test -n "$reference"
 127         then
 128                 git-clone "$reference" -n "$url" "$path"
 129         else
 130                 git-clone -n "$url" "$path"
 131         fi ||
 132         die "$(eval_gettext "Clone of '\$url' into submodule path '\$path' failed")"
 133 }
 134
 135 #
 136 # Add a new submodule to the working tree, .gitmodules and the index
 137 #
 138 # $@ = repo path
 139 #
 140 # optional branch is stored in global branch variable
 141 #
 142 cmd_add()
 143 {
 144         # parse $args after "submodule ... add".
 145         while test $# -ne 0
 146         do
 147                 case "$1" in
 148                 -b | --branch)
 149                         case "$2" in '') usage ;; esac
 150                         branch=$2
 151                         shift
 152                         ;;
 153                 -f | --force)
 154                         force=$1
 155                         ;;
 156                 -q|--quiet)
 157                         GIT_QUIET=1
 158                         ;;
 159                 --reference)
 160                         case "$2" in '') usage ;; esac
 161                         reference="--reference=$2"
 162                         shift
 163                         ;;
 164                 --reference=*)
 165                         reference="$1"
 166                         shift
 167                         ;;
 168                 --)
 169                         shift
 170                         break
 171                         ;;
 172                 -*)
 173                         usage
 174                         ;;
 175                 *)
 176                         break
 177                         ;;
 178                 esac
 179                 shift
 180         done
 181
 182         repo=$1
 183         path=$2
 184
 185         if test -z "$path"; then
 186                 path=$(echo "$repo" |
 187                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 188         fi
 189
 190         if test -z "$repo" -o -z "$path"; then
 191                 usage
 192         fi
 193
 194         # assure repo is absolute or relative to parent
 195         case "$repo" in
 196         ./*|../*)
 197                 # dereference source url relative to parent's url
 198                 realrepo=$(resolve_relative_url "$repo") || exit
 199                 ;;
 200         *:*|/*)
 201                 # absolute url
 202                 realrepo=$repo
 203                 ;;
 204         *)
 205                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 206         ;;
 207         esac
 208
 209         # normalize path:
 210         # multiple //; leading ./; /./; /../; trailing /
 211         path=$(printf '%s/\n' "$path" |
 212                 sed -e '
 213                         s|//*|/|g
 214                         s|^\(\./\)*||
 215                         s|/\./|/|g
 216                         :start
 217                         s|\([^/]*\)/\.\./||
 218                         tstart
 219                         s|/*$||
 220                 ')
 221         git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
 222         die "$(eval_gettext "'\$path' already exists in the index")"
 223
 224         if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
 225         then
 226                 (
 227                         eval_gettext "The following path is ignored by one of your .gitignore files:
 228 \$path
 229 Use -f if you really want to add it." &&
 230                         echo
 231                 ) >&2
 232                 exit 1
 233         fi
 234
 235         # perhaps the path exists and is already a git repo, else clone it
 236         if test -e "$path"
 237         then
 238                 if test -d "$path"/.git -o -f "$path"/.git
 239                 then
 240                         eval_gettext "Adding existing repo at '\$path' to the index"; echo
 241                 else
 242                         die "$(eval_gettext "'\$path' already exists and is not a valid git repo")"
 243                 fi
 244
 245                 case "$repo" in
 246                 ./*|../*)
 247                         url=$(resolve_relative_url "$repo") || exit
 248                     ;;
 249                 *)
 250                         url="$repo"
 251                         ;;
 252                 esac
 253                 git config submodule."$path".url "$url"
 254         else
 255
 256                 module_clone "$path" "$realrepo" "$reference" || exit
 257                 (
 258                         clear_local_git_env
 259                         cd "$path" &&
 260                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 261                         case "$branch" in
 262                         '') git checkout -f -q ;;
 263                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 264                         esac
 265                 ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
 266         fi
 267
 268         git add $force "$path" ||
 269         die "$(eval_gettext "Failed to add submodule '\$path'")"
 270
 271         git config -f .gitmodules submodule."$path".path "$path" &&
 272         git config -f .gitmodules submodule."$path".url "$repo" &&
 273         git add --force .gitmodules ||
 274         die "$(eval_gettext "Failed to register submodule '\$path'")"
 275 }
 276
 277 #
 278 # Execute an arbitrary command sequence in each checked out
 279 # submodule
 280 #
 281 # $@ = command to execute
 282 #
 283 cmd_foreach()
 284 {
 285         # parse $args after "submodule ... foreach".
 286         while test $# -ne 0
 287         do
 288                 case "$1" in
 289                 -q|--quiet)
 290                         GIT_QUIET=1
 291                         ;;
 292                 --recursive)
 293                         recursive=1
 294                         ;;
 295                 -*)
 296                         usage
 297                         ;;
 298                 *)
 299                         break
 300                         ;;
 301                 esac
 302                 shift
 303         done
 304
 305         toplevel=$(pwd)
 306
 307         # dup stdin so that it can be restored when running the external
 308         # command in the subshell (and a recursive call to this function)
 309         exec 3<&0
 310
 311         module_list |
 312         while read mode sha1 stage path
 313         do
 314                 if test -e "$path"/.git
 315                 then
 316                         say "$(eval_gettext "Entering '\$prefix\$path'")"
 317                         name=$(module_name "$path")
 318                         (
 319                                 prefix="$prefix$path/"
 320                                 clear_local_git_env
 321                                 cd "$path" &&
 322                                 eval "$@" &&
 323                                 if test -n "$recursive"
 324                                 then
 325                                         cmd_foreach "--recursive" "$@"
 326                                 fi
 327                         ) <&3 3<&- ||
 328                         die "$(eval_gettext "Stopping at '\$path'; script returned non-zero status.")"
 329                 fi
 330         done
 331 }
 332
 333 #
 334 # Register submodules in .git/config
 335 #
 336 # $@ = requested paths (default to all)
 337 #
 338 cmd_init()
 339 {
 340         # parse $args after "submodule ... init".
 341         while test $# -ne 0
 342         do
 343                 case "$1" in
 344                 -q|--quiet)
 345                         GIT_QUIET=1
 346                         ;;
 347                 --)
 348                         shift
 349                         break
 350                         ;;
 351                 -*)
 352                         usage
 353                         ;;
 354                 *)
 355                         break
 356                         ;;
 357                 esac
 358                 shift
 359         done
 360
 361         module_list "$@" |
 362         while read mode sha1 stage path
 363         do
 364                 # Skip already registered paths
 365                 name=$(module_name "$path") || exit
 366                 url=$(git config submodule."$name".url)
 367                 test -z "$url" || continue
 368
 369                 url=$(git config -f .gitmodules submodule."$name".url)
 370                 test -z "$url" &&
 371                 die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
 372
 373                 # Possibly a url relative to parent
 374                 case "$url" in
 375                 ./*|../*)
 376                         url=$(resolve_relative_url "$url") || exit
 377                         ;;
 378                 esac
 379
 380                 git config submodule."$name".url "$url" ||
 381                 die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
 382
 383                 upd="$(git config -f .gitmodules submodule."$name".update)"
 384                 test -z "$upd" ||
 385                 git config submodule."$name".update "$upd" ||
 386                 die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
 387
 388                 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$path'")"
 389         done
 390 }
 391
 392 #
 393 # Update each submodule path to correct revision, using clone and checkout as needed
 394 #
 395 # $@ = requested paths (default to all)
 396 #
 397 cmd_update()
 398 {
 399         # parse $args after "submodule ... update".
 400         orig_flags=
 401         while test $# -ne 0
 402         do
 403                 case "$1" in
 404                 -q|--quiet)
 405                         GIT_QUIET=1
 406                         ;;
 407                 -i|--init)
 408                         init=1
 409                         ;;
 410                 -N|--no-fetch)
 411                         nofetch=1
 412                         ;;
 413                 -f|--force)
 414                         force=$1
 415                         ;;
 416                 -r|--rebase)
 417                         update="rebase"
 418                         ;;
 419                 --reference)
 420                         case "$2" in '') usage ;; esac
 421                         reference="--reference=$2"
 422                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 423                         shift
 424                         ;;
 425                 --reference=*)
 426                         reference="$1"
 427                         ;;
 428                 -m|--merge)
 429                         update="merge"
 430                         ;;
 431                 --recursive)
 432                         recursive=1
 433                         ;;
 434                 --)
 435                         shift
 436                         break
 437                         ;;
 438                 -*)
 439                         usage
 440                         ;;
 441                 *)
 442                         break
 443                         ;;
 444                 esac
 445                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 446                 shift
 447         done
 448
 449         if test -n "$init"
 450         then
 451                 cmd_init "--" "$@" || return
 452         fi
 453
 454         cloned_modules=
 455         module_list "$@" |
 456         while read mode sha1 stage path
 457         do
 458                 if test "$stage" = U
 459                 then
 460                         echo >&2 "Skipping unmerged submodule $path"
 461                         continue
 462                 fi
 463                 name=$(module_name "$path") || exit
 464                 url=$(git config submodule."$name".url)
 465                 update_module=$(git config submodule."$name".update)
 466                 if test -z "$url"
 467                 then
 468                         # Only mention uninitialized submodules when its
 469                         # path have been specified
 470                         test "$#" != "0" &&
 471                         say "$(eval_gettext "Submodule path '\$path' not initialized
 472 Maybe you want to use 'update --init'?")"
 473                         continue
 474                 fi
 475
 476                 if ! test -d "$path"/.git -o -f "$path"/.git
 477                 then
 478                         module_clone "$path" "$url" "$reference"|| exit
 479                         cloned_modules="$cloned_modules;$name"
 480                         subsha1=
 481                 else
 482                         subsha1=$(clear_local_git_env; cd "$path" &&
 483                                 git rev-parse --verify HEAD) ||
 484                         die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
 485                 fi
 486
 487                 if ! test -z "$update"
 488                 then
 489                         update_module=$update
 490                 fi
 491
 492                 if test "$subsha1" != "$sha1"
 493                 then
 494                         subforce=$force
 495                         # If we don't already have a -f flag and the submodule has never been checked out
 496                         if test -z "$subsha1" -a -z "$force"
 497                         then
 498                                 subforce="-f"
 499                         fi
 500
 501                         if test -z "$nofetch"
 502                         then
 503                                 # Run fetch only if $sha1 isn't present or it
 504                                 # is not reachable from a ref.
 505                                 (clear_local_git_env; cd "$path" &&
 506                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 507                                          test -z "$rev") || git-fetch)) ||
 508                                 die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
 509                         fi
 510
 511                         # Is this something we just cloned?
 512                         case ";$cloned_modules;" in
 513                         *";$name;"*)
 514                                 # then there is no local change to integrate
 515                                 update_module= ;;
 516                         esac
 517
 518                         case "$update_module" in
 519                         rebase)
 520                                 command="git rebase"
 521                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$path'")"
 522                                 say_msg="$(eval_gettext "Submodule path '\$path': rebased into '\$sha1'")"
 523                                 ;;
 524                         merge)
 525                                 command="git merge"
 526                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$path'")"
 527                                 say_msg="$(eval_gettext "Submodule path '\$path': merged in '\$sha1'")"
 528                                 ;;
 529                         *)
 530                                 command="git checkout $subforce -q"
 531                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$path'")"
 532                                 say_msg="$(eval_gettext "Submodule path '\$path': checked out '\$sha1'")"
 533                                 ;;
 534                         esac
 535
 536                         (clear_local_git_env; cd "$path" && $command "$sha1") || die $die_msg
 537                         say $say_msg
 538                 fi
 539
 540                 if test -n "$recursive"
 541                 then
 542                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
 543                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 544                 fi
 545         done
 546 }
 547
 548 set_name_rev () {
 549         revname=$( (
 550                 clear_local_git_env
 551                 cd "$1" && {
 552                         git describe "$2" 2>/dev/null ||
 553                         git describe --tags "$2" 2>/dev/null ||
 554                         git describe --contains "$2" 2>/dev/null ||
 555                         git describe --all --always "$2"
 556                 }
 557         ) )
 558         test -z "$revname" || revname=" ($revname)"
 559 }
 560 #
 561 # Show commit summary for submodules in index or working tree
 562 #
 563 # If '--cached' is given, show summary between index and given commit,
 564 # or between working tree and given commit
 565 #
 566 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 567 #
 568 cmd_summary() {
 569         summary_limit=-1
 570         for_status=
 571         diff_cmd=diff-index
 572
 573         # parse $args after "submodule ... summary".
 574         while test $# -ne 0
 575         do
 576                 case "$1" in
 577                 --cached)
 578                         cached="$1"
 579                         ;;
 580                 --files)
 581                         files="$1"
 582                         ;;
 583                 --for-status)
 584                         for_status="$1"
 585                         ;;
 586                 -n|--summary-limit)
 587                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 588                         then
 589                                 :
 590                         else
 591                                 usage
 592                         fi
 593                         shift
 594                         ;;
 595                 --)
 596                         shift
 597                         break
 598                         ;;
 599                 -*)
 600                         usage
 601                         ;;
 602                 *)
 603                         break
 604                         ;;
 605                 esac
 606                 shift
 607         done
 608
 609         test $summary_limit = 0 && return
 610
 611         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 612         then
 613                 head=$rev
 614                 test $# = 0 || shift
 615         elif test -z "$1" -o "$1" = "HEAD"
 616         then
 617                 # before the first commit: compare with an empty tree
 618                 head=$(git hash-object -w -t tree --stdin </dev/null)
 619                 test -z "$1" || shift
 620         else
 621                 head="HEAD"
 622         fi
 623
 624         if [ -n "$files" ]
 625         then
 626                 test -n "$cached" &&
 627                 die "$(gettext -- "--cached cannot be used with --files")"
 628                 diff_cmd=diff-files
 629                 head=
 630         fi
 631
 632         cd_to_toplevel
 633         # Get modified modules cared by user
 634         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 635                 sane_egrep '^:([0-7]* )?160000' |
 636                 while read mod_src mod_dst sha1_src sha1_dst status name
 637                 do
 638                         # Always show modules deleted or type-changed (blob<->module)
 639                         test $status = D -o $status = T && echo "$name" && continue
 640                         # Also show added or modified modules which are checked out
 641                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 642                         echo "$name"
 643                 done
 644         )
 645
 646         test -z "$modules" && return
 647
 648         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 649         sane_egrep '^:([0-7]* )?160000' |
 650         cut -c2- |
 651         while read mod_src mod_dst sha1_src sha1_dst status name
 652         do
 653                 if test -z "$cached" &&
 654                         test $sha1_dst = 0000000000000000000000000000000000000000
 655                 then
 656                         case "$mod_dst" in
 657                         160000)
 658                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 659                                 ;;
 660                         100644 | 100755 | 120000)
 661                                 sha1_dst=$(git hash-object $name)
 662                                 ;;
 663                         000000)
 664                                 ;; # removed
 665                         *)
 666                                 # unexpected type
 667                                 (
 668                                         eval_gettext "unexpected mode \$mod_dst" &&
 669                                         echo
 670                                 ) >&2
 671                                 continue ;;
 672                         esac
 673                 fi
 674                 missing_src=
 675                 missing_dst=
 676
 677                 test $mod_src = 160000 &&
 678                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 679                 missing_src=t
 680
 681                 test $mod_dst = 160000 &&
 682                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 683                 missing_dst=t
 684
 685                 total_commits=
 686                 case "$missing_src,$missing_dst" in
 687                 t,)
 688                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 689                         ;;
 690                 ,t)
 691                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 692                         ;;
 693                 t,t)
 694                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 695                         ;;
 696                 *)
 697                         errmsg=
 698                         total_commits=$(
 699                         if test $mod_src = 160000 -a $mod_dst = 160000
 700                         then
 701                                 range="$sha1_src...$sha1_dst"
 702                         elif test $mod_src = 160000
 703                         then
 704                                 range=$sha1_src
 705                         else
 706                                 range=$sha1_dst
 707                         fi
 708                         GIT_DIR="$name/.git" \
 709                         git rev-list --first-parent $range -- | wc -l
 710                         )
 711                         total_commits=" ($(($total_commits + 0)))"
 712                         ;;
 713                 esac
 714
 715                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 716                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 717                 if test $status = T
 718                 then
 719                         blob="$(gettext "blob")"
 720                         submodule="$(gettext "submodule")"
 721                         if test $mod_dst = 160000
 722                         then
 723                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 724                         else
 725                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 726                         fi
 727                 else
 728                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 729                 fi
 730                 if test -n "$errmsg"
 731                 then
 732                         # Don't give error msg for modification whose dst is not submodule
 733                         # i.e. deleted or changed to blob
 734                         test $mod_dst = 160000 && echo "$errmsg"
 735                 else
 736                         if test $mod_src = 160000 -a $mod_dst = 160000
 737                         then
 738                                 limit=
 739                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 740                                 GIT_DIR="$name/.git" \
 741                                 git log $limit --pretty='format:  %m %s' \
 742                                 --first-parent $sha1_src...$sha1_dst
 743                         elif test $mod_dst = 160000
 744                         then
 745                                 GIT_DIR="$name/.git" \
 746                                 git log --pretty='format:  > %s' -1 $sha1_dst
 747                         else
 748                                 GIT_DIR="$name/.git" \
 749                                 git log --pretty='format:  < %s' -1 $sha1_src
 750                         fi
 751                         echo
 752                 fi
 753                 echo
 754         done |
 755         if test -n "$for_status"; then
 756                 if [ -n "$files" ]; then
 757                         gettext "# Submodules changed but not updated:"; echo
 758                 else
 759                         gettext "# Submodule changes to be committed:"; echo
 760                 fi
 761                 echo "#"
 762                 sed -e 's|^|# |' -e 's|^# $|#|'
 763         else
 764                 cat
 765         fi
 766 }
 767 #
 768 # List all submodules, prefixed with:
 769 #  - submodule not initialized
 770 #  + different revision checked out
 771 #
 772 # If --cached was specified the revision in the index will be printed
 773 # instead of the currently checked out revision.
 774 #
 775 # $@ = requested paths (default to all)
 776 #
 777 cmd_status()
 778 {
 779         # parse $args after "submodule ... status".
 780         orig_flags=
 781         while test $# -ne 0
 782         do
 783                 case "$1" in
 784                 -q|--quiet)
 785                         GIT_QUIET=1
 786                         ;;
 787                 --cached)
 788                         cached=1
 789                         ;;
 790                 --recursive)
 791                         recursive=1
 792                         ;;
 793                 --)
 794                         shift
 795                         break
 796                         ;;
 797                 -*)
 798                         usage
 799                         ;;
 800                 *)
 801                         break
 802                         ;;
 803                 esac
 804                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 805                 shift
 806         done
 807
 808         module_list "$@" |
 809         while read mode sha1 stage path
 810         do
 811                 name=$(module_name "$path") || exit
 812                 url=$(git config submodule."$name".url)
 813                 displaypath="$prefix$path"
 814                 if test "$stage" = U
 815                 then
 816                         say "U$sha1 $displaypath"
 817                         continue
 818                 fi
 819                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 820                 then
 821                         say "-$sha1 $displaypath"
 822                         continue;
 823                 fi
 824                 set_name_rev "$path" "$sha1"
 825                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 826                 then
 827                         say " $sha1 $displaypath$revname"
 828                 else
 829                         if test -z "$cached"
 830                         then
 831                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 832                                 set_name_rev "$path" "$sha1"
 833                         fi
 834                         say "+$sha1 $displaypath$revname"
 835                 fi
 836
 837                 if test -n "$recursive"
 838                 then
 839                         (
 840                                 prefix="$displaypath/"
 841                                 clear_local_git_env
 842                                 cd "$path" &&
 843                                 eval cmd_status "$orig_args"
 844                         ) ||
 845                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 846                 fi
 847         done
 848 }
 849 #
 850 # Sync remote urls for submodules
 851 # This makes the value for remote.$remote.url match the value
 852 # specified in .gitmodules.
 853 #
 854 cmd_sync()
 855 {
 856         while test $# -ne 0
 857         do
 858                 case "$1" in
 859                 -q|--quiet)
 860                         GIT_QUIET=1
 861                         shift
 862                         ;;
 863                 --)
 864                         shift
 865                         break
 866                         ;;
 867                 -*)
 868                         usage
 869                         ;;
 870                 *)
 871                         break
 872                         ;;
 873                 esac
 874         done
 875         cd_to_toplevel
 876         module_list "$@" |
 877         while read mode sha1 stage path
 878         do
 879                 name=$(module_name "$path")
 880                 url=$(git config -f .gitmodules --get submodule."$name".url)
 881
 882                 # Possibly a url relative to parent
 883                 case "$url" in
 884                 ./*|../*)
 885                         url=$(resolve_relative_url "$url") || exit
 886                         ;;
 887                 esac
 888
 889                 say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 890                 git config submodule."$name".url "$url"
 891
 892                 if test -e "$path"/.git
 893                 then
 894                 (
 895                         clear_local_git_env
 896                         cd "$path"
 897                         remote=$(get_default_remote)
 898                         git config remote."$remote".url "$url"
 899                 )
 900                 fi
 901         done
 902 }
 903
 904 # This loop parses the command line arguments to find the
 905 # subcommand name to dispatch.  Parsing of the subcommand specific
 906 # options are primarily done by the subcommand implementations.
 907 # Subcommand specific options such as --branch and --cached are
 908 # parsed here as well, for backward compatibility.
 909
 910 while test $# != 0 && test -z "$command"
 911 do
 912         case "$1" in
 913         add | foreach | init | update | status | summary | sync)
 914                 command=$1
 915                 ;;
 916         -q|--quiet)
 917                 GIT_QUIET=1
 918                 ;;
 919         -b|--branch)
 920                 case "$2" in
 921                 '')
 922                         usage
 923                         ;;
 924                 esac
 925                 branch="$2"; shift
 926                 ;;
 927         --cached)
 928                 cached="$1"
 929                 ;;
 930         --)
 931                 break
 932                 ;;
 933         -*)
 934                 usage
 935                 ;;
 936         *)
 937                 break
 938                 ;;
 939         esac
 940         shift
 941 done
 942
 943 # No command word defaults to "status"
 944 test -n "$command" || command=status
 945
 946 # "-b branch" is accepted only by "add"
 947 if test -n "$branch" && test "$command" != add
 948 then
 949         usage
 950 fi
 951
 952 # "--cached" is accepted only by "status" and "summary"
 953 if test -n "$cached" && test "$command" != status -a "$command" != summary
 954 then
 955         usage
 956 fi
 957
 958 "cmd_$command" "$@"