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                 echo >&2 "The following path is ignored by one of your .gitignore files:" &&
 227                 echo >&2 $path &&
 228                 echo >&2 "Use -f if you really want to add it."
 229                 exit 1
 230         fi
 231
 232         # perhaps the path exists and is already a git repo, else clone it
 233         if test -e "$path"
 234         then
 235                 if test -d "$path"/.git -o -f "$path"/.git
 236                 then
 237                         eval_gettext "Adding existing repo at '\$path' to the index"; echo
 238                 else
 239                         die "$(eval_gettext "'\$path' already exists and is not a valid git repo")"
 240                 fi
 241
 242                 case "$repo" in
 243                 ./*|../*)
 244                         url=$(resolve_relative_url "$repo") || exit
 245                     ;;
 246                 *)
 247                         url="$repo"
 248                         ;;
 249                 esac
 250                 git config submodule."$path".url "$url"
 251         else
 252
 253                 module_clone "$path" "$realrepo" "$reference" || exit
 254                 (
 255                         clear_local_git_env
 256                         cd "$path" &&
 257                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 258                         case "$branch" in
 259                         '') git checkout -f -q ;;
 260                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 261                         esac
 262                 ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
 263         fi
 264
 265         git add $force "$path" ||
 266         die "$(eval_gettext "Failed to add submodule '\$path'")"
 267
 268         git config -f .gitmodules submodule."$path".path "$path" &&
 269         git config -f .gitmodules submodule."$path".url "$repo" &&
 270         git add --force .gitmodules ||
 271         die "$(eval_gettext "Failed to register submodule '\$path'")"
 272 }
 273
 274 #
 275 # Execute an arbitrary command sequence in each checked out
 276 # submodule
 277 #
 278 # $@ = command to execute
 279 #
 280 cmd_foreach()
 281 {
 282         # parse $args after "submodule ... foreach".
 283         while test $# -ne 0
 284         do
 285                 case "$1" in
 286                 -q|--quiet)
 287                         GIT_QUIET=1
 288                         ;;
 289                 --recursive)
 290                         recursive=1
 291                         ;;
 292                 -*)
 293                         usage
 294                         ;;
 295                 *)
 296                         break
 297                         ;;
 298                 esac
 299                 shift
 300         done
 301
 302         toplevel=$(pwd)
 303
 304         module_list |
 305         while read mode sha1 stage path
 306         do
 307                 if test -e "$path"/.git
 308                 then
 309                         say "$(eval_gettext "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                         ) ||
 321                         die "$(eval_gettext "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                 url=$(git config submodule."$name".url)
 360                 test -z "$url" || continue
 361
 362                 url=$(git config -f .gitmodules submodule."$name".url)
 363                 test -z "$url" &&
 364                 die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
 365
 366                 # Possibly a url relative to parent
 367                 case "$url" in
 368                 ./*|../*)
 369                         url=$(resolve_relative_url "$url") || exit
 370                         ;;
 371                 esac
 372
 373                 git config submodule."$name".url "$url" ||
 374                 die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
 375
 376                 upd="$(git config -f .gitmodules submodule."$name".update)"
 377                 test -z "$upd" ||
 378                 git config submodule."$name".update "$upd" ||
 379                 die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
 380
 381                 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$path'")"
 382         done
 383 }
 384
 385 #
 386 # Update each submodule path to correct revision, using clone and checkout as needed
 387 #
 388 # $@ = requested paths (default to all)
 389 #
 390 cmd_update()
 391 {
 392         # parse $args after "submodule ... update".
 393         orig_flags=
 394         while test $# -ne 0
 395         do
 396                 case "$1" in
 397                 -q|--quiet)
 398                         GIT_QUIET=1
 399                         ;;
 400                 -i|--init)
 401                         init=1
 402                         ;;
 403                 -N|--no-fetch)
 404                         nofetch=1
 405                         ;;
 406                 -f|--force)
 407                         force=$1
 408                         ;;
 409                 -r|--rebase)
 410                         update="rebase"
 411                         ;;
 412                 --reference)
 413                         case "$2" in '') usage ;; esac
 414                         reference="--reference=$2"
 415                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 416                         shift
 417                         ;;
 418                 --reference=*)
 419                         reference="$1"
 420                         ;;
 421                 -m|--merge)
 422                         update="merge"
 423                         ;;
 424                 --recursive)
 425                         recursive=1
 426                         ;;
 427                 --)
 428                         shift
 429                         break
 430                         ;;
 431                 -*)
 432                         usage
 433                         ;;
 434                 *)
 435                         break
 436                         ;;
 437                 esac
 438                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 439                 shift
 440         done
 441
 442         if test -n "$init"
 443         then
 444                 cmd_init "--" "$@" || return
 445         fi
 446
 447         cloned_modules=
 448         module_list "$@" |
 449         while read mode sha1 stage path
 450         do
 451                 if test "$stage" = U
 452                 then
 453                         echo >&2 "Skipping unmerged submodule $path"
 454                         continue
 455                 fi
 456                 name=$(module_name "$path") || exit
 457                 url=$(git config submodule."$name".url)
 458                 update_module=$(git config submodule."$name".update)
 459                 if test -z "$url"
 460                 then
 461                         # Only mention uninitialized submodules when its
 462                         # path have been specified
 463                         test "$#" != "0" &&
 464                         say "Submodule path '$path' not initialized" &&
 465                         say "Maybe you want to use 'update --init'?"
 466                         continue
 467                 fi
 468
 469                 if ! test -d "$path"/.git -o -f "$path"/.git
 470                 then
 471                         module_clone "$path" "$url" "$reference"|| exit
 472                         cloned_modules="$cloned_modules;$name"
 473                         subsha1=
 474                 else
 475                         subsha1=$(clear_local_git_env; cd "$path" &&
 476                                 git rev-parse --verify HEAD) ||
 477                         die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
 478                 fi
 479
 480                 if ! test -z "$update"
 481                 then
 482                         update_module=$update
 483                 fi
 484
 485                 if test "$subsha1" != "$sha1"
 486                 then
 487                         subforce=$force
 488                         # If we don't already have a -f flag and the submodule has never been checked out
 489                         if test -z "$subsha1" -a -z "$force"
 490                         then
 491                                 subforce="-f"
 492                         fi
 493
 494                         if test -z "$nofetch"
 495                         then
 496                                 # Run fetch only if $sha1 isn't present or it
 497                                 # is not reachable from a ref.
 498                                 (clear_local_git_env; cd "$path" &&
 499                                         ((rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 500                                          test -z "$rev") || git-fetch)) ||
 501                                 die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
 502                         fi
 503
 504                         # Is this something we just cloned?
 505                         case ";$cloned_modules;" in
 506                         *";$name;"*)
 507                                 # then there is no local change to integrate
 508                                 update_module= ;;
 509                         esac
 510
 511                         case "$update_module" in
 512                         rebase)
 513                                 command="git rebase"
 514                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$path'")"
 515                                 say_msg="$(eval_gettext "Submodule path '\$path': rebased into '\$sha1'")"
 516                                 ;;
 517                         merge)
 518                                 command="git merge"
 519                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$path'")"
 520                                 say_msg="$(eval_gettext "Submodule path '\$path': merged in '\$sha1'")"
 521                                 ;;
 522                         *)
 523                                 command="git checkout $subforce -q"
 524                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$path'")"
 525                                 say_msg="$(eval_gettext "Submodule path '\$path': checked out '\$sha1'")"
 526                                 ;;
 527                         esac
 528
 529                         (clear_local_git_env; cd "$path" && $command "$sha1") || die $die_msg
 530                         say $say_msg
 531                 fi
 532
 533                 if test -n "$recursive"
 534                 then
 535                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
 536                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 537                 fi
 538         done
 539 }
 540
 541 set_name_rev () {
 542         revname=$( (
 543                 clear_local_git_env
 544                 cd "$1" && {
 545                         git describe "$2" 2>/dev/null ||
 546                         git describe --tags "$2" 2>/dev/null ||
 547                         git describe --contains "$2" 2>/dev/null ||
 548                         git describe --all --always "$2"
 549                 }
 550         ) )
 551         test -z "$revname" || revname=" ($revname)"
 552 }
 553 #
 554 # Show commit summary for submodules in index or working tree
 555 #
 556 # If '--cached' is given, show summary between index and given commit,
 557 # or between working tree and given commit
 558 #
 559 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 560 #
 561 cmd_summary() {
 562         summary_limit=-1
 563         for_status=
 564         diff_cmd=diff-index
 565
 566         # parse $args after "submodule ... summary".
 567         while test $# -ne 0
 568         do
 569                 case "$1" in
 570                 --cached)
 571                         cached="$1"
 572                         ;;
 573                 --files)
 574                         files="$1"
 575                         ;;
 576                 --for-status)
 577                         for_status="$1"
 578                         ;;
 579                 -n|--summary-limit)
 580                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 581                         then
 582                                 :
 583                         else
 584                                 usage
 585                         fi
 586                         shift
 587                         ;;
 588                 --)
 589                         shift
 590                         break
 591                         ;;
 592                 -*)
 593                         usage
 594                         ;;
 595                 *)
 596                         break
 597                         ;;
 598                 esac
 599                 shift
 600         done
 601
 602         test $summary_limit = 0 && return
 603
 604         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 605         then
 606                 head=$rev
 607                 test $# = 0 || shift
 608         elif test -z "$1" -o "$1" = "HEAD"
 609         then
 610                 # before the first commit: compare with an empty tree
 611                 head=$(git hash-object -w -t tree --stdin </dev/null)
 612                 test -z "$1" || shift
 613         else
 614                 head="HEAD"
 615         fi
 616
 617         if [ -n "$files" ]
 618         then
 619                 test -n "$cached" &&
 620                 die "$(gettext -- "--cached cannot be used with --files")"
 621                 diff_cmd=diff-files
 622                 head=
 623         fi
 624
 625         cd_to_toplevel
 626         # Get modified modules cared by user
 627         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 628                 sane_egrep '^:([0-7]* )?160000' |
 629                 while read mod_src mod_dst sha1_src sha1_dst status name
 630                 do
 631                         # Always show modules deleted or type-changed (blob<->module)
 632                         test $status = D -o $status = T && echo "$name" && continue
 633                         # Also show added or modified modules which are checked out
 634                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 635                         echo "$name"
 636                 done
 637         )
 638
 639         test -z "$modules" && return
 640
 641         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 642         sane_egrep '^:([0-7]* )?160000' |
 643         cut -c2- |
 644         while read mod_src mod_dst sha1_src sha1_dst status name
 645         do
 646                 if test -z "$cached" &&
 647                         test $sha1_dst = 0000000000000000000000000000000000000000
 648                 then
 649                         case "$mod_dst" in
 650                         160000)
 651                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 652                                 ;;
 653                         100644 | 100755 | 120000)
 654                                 sha1_dst=$(git hash-object $name)
 655                                 ;;
 656                         000000)
 657                                 ;; # removed
 658                         *)
 659                                 # unexpected type
 660                                 (
 661                                         eval_gettext "unexpected mode \$mod_dst" &&
 662                                         echo
 663                                 ) >&2
 664                                 continue ;;
 665                         esac
 666                 fi
 667                 missing_src=
 668                 missing_dst=
 669
 670                 test $mod_src = 160000 &&
 671                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 672                 missing_src=t
 673
 674                 test $mod_dst = 160000 &&
 675                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 676                 missing_dst=t
 677
 678                 total_commits=
 679                 case "$missing_src,$missing_dst" in
 680                 t,)
 681                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 682                         ;;
 683                 ,t)
 684                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 685                         ;;
 686                 t,t)
 687                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 688                         ;;
 689                 *)
 690                         errmsg=
 691                         total_commits=$(
 692                         if test $mod_src = 160000 -a $mod_dst = 160000
 693                         then
 694                                 range="$sha1_src...$sha1_dst"
 695                         elif test $mod_src = 160000
 696                         then
 697                                 range=$sha1_src
 698                         else
 699                                 range=$sha1_dst
 700                         fi
 701                         GIT_DIR="$name/.git" \
 702                         git rev-list --first-parent $range -- | wc -l
 703                         )
 704                         total_commits=" ($(($total_commits + 0)))"
 705                         ;;
 706                 esac
 707
 708                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 709                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 710                 if test $status = T
 711                 then
 712                         if test $mod_dst = 160000
 713                         then
 714                                 echo "* $name $sha1_abbr_src(blob)->$sha1_abbr_dst(submodule)$total_commits:"
 715                         else
 716                                 echo "* $name $sha1_abbr_src(submodule)->$sha1_abbr_dst(blob)$total_commits:"
 717                         fi
 718                 else
 719                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 720                 fi
 721                 if test -n "$errmsg"
 722                 then
 723                         # Don't give error msg for modification whose dst is not submodule
 724                         # i.e. deleted or changed to blob
 725                         test $mod_dst = 160000 && echo "$errmsg"
 726                 else
 727                         if test $mod_src = 160000 -a $mod_dst = 160000
 728                         then
 729                                 limit=
 730                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 731                                 GIT_DIR="$name/.git" \
 732                                 git log $limit --pretty='format:  %m %s' \
 733                                 --first-parent $sha1_src...$sha1_dst
 734                         elif test $mod_dst = 160000
 735                         then
 736                                 GIT_DIR="$name/.git" \
 737                                 git log --pretty='format:  > %s' -1 $sha1_dst
 738                         else
 739                                 GIT_DIR="$name/.git" \
 740                                 git log --pretty='format:  < %s' -1 $sha1_src
 741                         fi
 742                         echo
 743                 fi
 744                 echo
 745         done |
 746         if test -n "$for_status"; then
 747                 if [ -n "$files" ]; then
 748                         gettext "# Submodules changed but not updated:"; echo
 749                 else
 750                         gettext "# Submodule changes to be committed:"; echo
 751                 fi
 752                 echo "#"
 753                 sed -e 's|^|# |' -e 's|^# $|#|'
 754         else
 755                 cat
 756         fi
 757 }
 758 #
 759 # List all submodules, prefixed with:
 760 #  - submodule not initialized
 761 #  + different revision checked out
 762 #
 763 # If --cached was specified the revision in the index will be printed
 764 # instead of the currently checked out revision.
 765 #
 766 # $@ = requested paths (default to all)
 767 #
 768 cmd_status()
 769 {
 770         # parse $args after "submodule ... status".
 771         orig_flags=
 772         while test $# -ne 0
 773         do
 774                 case "$1" in
 775                 -q|--quiet)
 776                         GIT_QUIET=1
 777                         ;;
 778                 --cached)
 779                         cached=1
 780                         ;;
 781                 --recursive)
 782                         recursive=1
 783                         ;;
 784                 --)
 785                         shift
 786                         break
 787                         ;;
 788                 -*)
 789                         usage
 790                         ;;
 791                 *)
 792                         break
 793                         ;;
 794                 esac
 795                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 796                 shift
 797         done
 798
 799         module_list "$@" |
 800         while read mode sha1 stage path
 801         do
 802                 name=$(module_name "$path") || exit
 803                 url=$(git config submodule."$name".url)
 804                 displaypath="$prefix$path"
 805                 if test "$stage" = U
 806                 then
 807                         say "U$sha1 $displaypath"
 808                         continue
 809                 fi
 810                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 811                 then
 812                         say "-$sha1 $displaypath"
 813                         continue;
 814                 fi
 815                 set_name_rev "$path" "$sha1"
 816                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 817                 then
 818                         say " $sha1 $displaypath$revname"
 819                 else
 820                         if test -z "$cached"
 821                         then
 822                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 823                                 set_name_rev "$path" "$sha1"
 824                         fi
 825                         say "+$sha1 $displaypath$revname"
 826                 fi
 827
 828                 if test -n "$recursive"
 829                 then
 830                         (
 831                                 prefix="$displaypath/"
 832                                 clear_local_git_env
 833                                 cd "$path" &&
 834                                 eval cmd_status "$orig_args"
 835                         ) ||
 836                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 837                 fi
 838         done
 839 }
 840 #
 841 # Sync remote urls for submodules
 842 # This makes the value for remote.$remote.url match the value
 843 # specified in .gitmodules.
 844 #
 845 cmd_sync()
 846 {
 847         while test $# -ne 0
 848         do
 849                 case "$1" in
 850                 -q|--quiet)
 851                         GIT_QUIET=1
 852                         shift
 853                         ;;
 854                 --)
 855                         shift
 856                         break
 857                         ;;
 858                 -*)
 859                         usage
 860                         ;;
 861                 *)
 862                         break
 863                         ;;
 864                 esac
 865         done
 866         cd_to_toplevel
 867         module_list "$@" |
 868         while read mode sha1 stage path
 869         do
 870                 name=$(module_name "$path")
 871                 url=$(git config -f .gitmodules --get submodule."$name".url)
 872
 873                 # Possibly a url relative to parent
 874                 case "$url" in
 875                 ./*|../*)
 876                         url=$(resolve_relative_url "$url") || exit
 877                         ;;
 878                 esac
 879
 880                 say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 881                 git config submodule."$name".url "$url"
 882
 883                 if test -e "$path"/.git
 884                 then
 885                 (
 886                         clear_local_git_env
 887                         cd "$path"
 888                         remote=$(get_default_remote)
 889                         git config remote."$remote".url "$url"
 890                 )
 891                 fi
 892         done
 893 }
 894
 895 # This loop parses the command line arguments to find the
 896 # subcommand name to dispatch.  Parsing of the subcommand specific
 897 # options are primarily done by the subcommand implementations.
 898 # Subcommand specific options such as --branch and --cached are
 899 # parsed here as well, for backward compatibility.
 900
 901 while test $# != 0 && test -z "$command"
 902 do
 903         case "$1" in
 904         add | foreach | init | update | status | summary | sync)
 905                 command=$1
 906                 ;;
 907         -q|--quiet)
 908                 GIT_QUIET=1
 909                 ;;
 910         -b|--branch)
 911                 case "$2" in
 912                 '')
 913                         usage
 914                         ;;
 915                 esac
 916                 branch="$2"; shift
 917                 ;;
 918         --cached)
 919                 cached="$1"
 920                 ;;
 921         --)
 922                 break
 923                 ;;
 924         -*)
 925                 usage
 926                 ;;
 927         *)
 928                 break
 929                 ;;
 930         esac
 931         shift
 932 done
 933
 934 # No command word defaults to "status"
 935 test -n "$command" || command=status
 936
 937 # "-b branch" is accepted only by "add"
 938 if test -n "$branch" && test "$command" != add
 939 then
 940         usage
 941 fi
 942
 943 # "--cached" is accepted only by "status" and "summary"
 944 if test -n "$cached" && test "$command" != status -a "$command" != summary
 945 then
 946         usage
 947 fi
 948
 949 "cmd_$command" "$@"