git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # git-submodules.sh: add, init, update or list git submodules
   4 #
   5 # Copyright (c) 2007 Lars Hjemli
   6
   7 dashless=$(basename "$0" | sed -e 's/-/ /')
   8 USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
  12    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  13    or: $dashless [--quiet] foreach [--recursive] <command>
  14    or: $dashless [--quiet] sync [--] [<path>...]"
  15 OPTIONS_SPEC=
  16 . git-sh-setup
  17 . git-parse-remote
  18 require_work_tree
  19
  20 command=
  21 branch=
  22 force=
  23 reference=
  24 cached=
  25 recursive=
  26 init=
  27 files=
  28 nofetch=
  29 update=
  30 prefix=
  31
  32 # Resolve relative url by appending to parent's url
  33 resolve_relative_url ()
  34 {
  35         remote=$(get_default_remote)
  36         remoteurl=$(git config "remote.$remote.url") ||
  37                 die "remote ($remote) does not have a url defined in .git/config"
  38         url="$1"
  39         remoteurl=${remoteurl%/}
  40         sep=/
  41         while test -n "$url"
  42         do
  43                 case "$url" in
  44                 ../*)
  45                         url="${url#../}"
  46                         case "$remoteurl" in
  47                         */*)
  48                                 remoteurl="${remoteurl%/*}"
  49                                 ;;
  50                         *:*)
  51                                 remoteurl="${remoteurl%:*}"
  52                                 sep=:
  53                                 ;;
  54                         *)
  55                                 die "cannot strip one component off url '$remoteurl'"
  56                                 ;;
  57                         esac
  58                         ;;
  59                 ./*)
  60                         url="${url#./}"
  61                         ;;
  62                 *)
  63                         break;;
  64                 esac
  65         done
  66         echo "$remoteurl$sep${url%/}"
  67 }
  68
  69 #
  70 # Get submodule info for registered submodules
  71 # $@ = path to limit submodule list
  72 #
  73 module_list()
  74 {
  75         git ls-files --error-unmatch --stage -- "$@" |
  76         perl -e '
  77         my %unmerged = ();
  78         my ($null_sha1) = ("0" x 40);
  79         while (<STDIN>) {
  80                 chomp;
  81                 my ($mode, $sha1, $stage, $path) =
  82                         /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
  83                 next unless $mode eq "160000";
  84                 if ($stage ne "0") {
  85                         if (!$unmerged{$path}++) {
  86                                 print "$mode $null_sha1 U\t$path\n";
  87                         }
  88                         next;
  89                 }
  90                 print "$_\n";
  91         }
  92         '
  93 }
  94
  95 #
  96 # Map submodule path to submodule name
  97 #
  98 # $1 = path
  99 #
 100 module_name()
 101 {
 102         # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
 103         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 104         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 105                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 106        test -z "$name" &&
 107        die "No submodule mapping found in .gitmodules for path '$path'"
 108        echo "$name"
 109 }
 110
 111 #
 112 # Clone a submodule
 113 #
 114 # Prior to calling, cmd_update checks that a possibly existing
 115 # path is not a git repository.
 116 # Likewise, cmd_add checks that path does not exist at all,
 117 # since it is the location of a new submodule.
 118 #
 119 module_clone()
 120 {
 121         path=$1
 122         url=$2
 123         reference="$3"
 124
 125         if test -n "$reference"
 126         then
 127                 git-clone "$reference" -n "$url" "$path"
 128         else
 129                 git-clone -n "$url" "$path"
 130         fi ||
 131         die "Clone of '$url' into submodule path '$path' failed"
 132 }
 133
 134 #
 135 # Add a new submodule to the working tree, .gitmodules and the index
 136 #
 137 # $@ = repo path
 138 #
 139 # optional branch is stored in global branch variable
 140 #
 141 cmd_add()
 142 {
 143         # parse $args after "submodule ... add".
 144         while test $# -ne 0
 145         do
 146                 case "$1" in
 147                 -b | --branch)
 148                         case "$2" in '') usage ;; esac
 149                         branch=$2
 150                         shift
 151                         ;;
 152                 -f | --force)
 153                         force=$1
 154                         ;;
 155                 -q|--quiet)
 156                         GIT_QUIET=1
 157                         ;;
 158                 --reference)
 159                         case "$2" in '') usage ;; esac
 160                         reference="--reference=$2"
 161                         shift
 162                         ;;
 163                 --reference=*)
 164                         reference="$1"
 165                         shift
 166                         ;;
 167                 --)
 168                         shift
 169                         break
 170                         ;;
 171                 -*)
 172                         usage
 173                         ;;
 174                 *)
 175                         break
 176                         ;;
 177                 esac
 178                 shift
 179         done
 180
 181         repo=$1
 182         path=$2
 183
 184         if test -z "$path"; then
 185                 path=$(echo "$repo" |
 186                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 187         fi
 188
 189         if test -z "$repo" -o -z "$path"; then
 190                 usage
 191         fi
 192
 193         # assure repo is absolute or relative to parent
 194         case "$repo" in
 195         ./*|../*)
 196                 # dereference source url relative to parent's url
 197                 realrepo=$(resolve_relative_url "$repo") || exit
 198                 ;;
 199         *:*|/*)
 200                 # absolute url
 201                 realrepo=$repo
 202                 ;;
 203         *)
 204                 die "repo URL: '$repo' must be absolute or begin with ./|../"
 205         ;;
 206         esac
 207
 208         # normalize path:
 209         # multiple //; leading ./; /./; /../; trailing /
 210         path=$(printf '%s/\n' "$path" |
 211                 sed -e '
 212                         s|//*|/|g
 213                         s|^\(\./\)*||
 214                         s|/\./|/|g
 215                         :start
 216                         s|\([^/]*\)/\.\./||
 217                         tstart
 218                         s|/*$||
 219                 ')
 220         git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
 221         die "'$path' already exists in the index"
 222
 223         if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
 224         then
 225                 cat >&2 <<EOF
 226 The following path is ignored by one of your .gitignore files:
 227 $path
 228 Use -f if you really want to add it.
 229 EOF
 230                 exit 1
 231         fi
 232
 233         # perhaps the path exists and is already a git repo, else clone it
 234         if test -e "$path"
 235         then
 236                 if test -d "$path"/.git -o -f "$path"/.git
 237                 then
 238                         echo "Adding existing repo at '$path' to the index"
 239                 else
 240                         die "'$path' already exists and is not a valid git repo"
 241                 fi
 242
 243                 case "$repo" in
 244                 ./*|../*)
 245                         url=$(resolve_relative_url "$repo") || exit
 246                     ;;
 247                 *)
 248                         url="$repo"
 249                         ;;
 250                 esac
 251                 git config submodule."$path".url "$url"
 252         else
 253
 254                 module_clone "$path" "$realrepo" "$reference" || exit
 255                 (
 256                         clear_local_git_env
 257                         cd "$path" &&
 258                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 259                         case "$branch" in
 260                         '') git checkout -f -q ;;
 261                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 262                         esac
 263                 ) || die "Unable to checkout submodule '$path'"
 264         fi
 265
 266         git add $force "$path" ||
 267         die "Failed to add submodule '$path'"
 268
 269         git config -f .gitmodules submodule."$path".path "$path" &&
 270         git config -f .gitmodules submodule."$path".url "$repo" &&
 271         git add --force .gitmodules ||
 272         die "Failed to register submodule '$path'"
 273 }
 274
 275 #
 276 # Execute an arbitrary command sequence in each checked out
 277 # submodule
 278 #
 279 # $@ = command to execute
 280 #
 281 cmd_foreach()
 282 {
 283         # parse $args after "submodule ... foreach".
 284         while test $# -ne 0
 285         do
 286                 case "$1" in
 287                 -q|--quiet)
 288                         GIT_QUIET=1
 289                         ;;
 290                 --recursive)
 291                         recursive=1
 292                         ;;
 293                 -*)
 294                         usage
 295                         ;;
 296                 *)
 297                         break
 298                         ;;
 299                 esac
 300                 shift
 301         done
 302
 303         toplevel=$(pwd)
 304
 305         module_list |
 306         while read mode sha1 stage path
 307         do
 308                 if test -e "$path"/.git
 309                 then
 310                         say "Entering '$prefix$path'"
 311                         name=$(module_name "$path")
 312                         (
 313                                 prefix="$prefix$path/"
 314                                 clear_local_git_env
 315                                 cd "$path" &&
 316                                 eval "$@" &&
 317                                 if test -n "$recursive"
 318                                 then
 319                                         cmd_foreach "--recursive" "$@"
 320                                 fi
 321                         ) ||
 322                         die "Stopping at '$path'; script returned non-zero status."
 323                 fi
 324         done
 325 }
 326
 327 #
 328 # Register submodules in .git/config
 329 #
 330 # $@ = requested paths (default to all)
 331 #
 332 cmd_init()
 333 {
 334         # parse $args after "submodule ... init".
 335         while test $# -ne 0
 336         do
 337                 case "$1" in
 338                 -q|--quiet)
 339                         GIT_QUIET=1
 340                         ;;
 341                 --)
 342                         shift
 343                         break
 344                         ;;
 345                 -*)
 346                         usage
 347                         ;;
 348                 *)
 349                         break
 350                         ;;
 351                 esac
 352                 shift
 353         done
 354
 355         module_list "$@" |
 356         while read mode sha1 stage path
 357         do
 358                 # Skip already registered paths
 359                 name=$(module_name "$path") || exit
 360                 url=$(git config submodule."$name".url)
 361                 test -z "$url" || continue
 362
 363                 url=$(git config -f .gitmodules submodule."$name".url)
 364                 test -z "$url" &&
 365                 die "No url found for submodule path '$path' in .gitmodules"
 366
 367                 # Possibly a url relative to parent
 368                 case "$url" in
 369                 ./*|../*)
 370                         url=$(resolve_relative_url "$url") || exit
 371                         ;;
 372                 esac
 373
 374                 git config submodule."$name".url "$url" ||
 375                 die "Failed to register url for submodule path '$path'"
 376
 377                 upd="$(git config -f .gitmodules submodule."$name".update)"
 378                 test -z "$upd" ||
 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 "$files" ]; then
 747                         status_msg="# Submodules changed but not updated:"
 748                 else
 749                         status_msg="# Submodule changes to be committed:"
 750                 fi
 751                 status_sed=$(sed -e 's|^|# |' -e 's|^# $|#|')
 752                 cat <<EOF
 753 $status_msg
 754 #
 755 $status_sed
 756 EOF
 757         else
 758                 cat
 759         fi
 760 }
 761 #
 762 # List all submodules, prefixed with:
 763 #  - submodule not initialized
 764 #  + different revision checked out
 765 #
 766 # If --cached was specified the revision in the index will be printed
 767 # instead of the currently checked out revision.
 768 #
 769 # $@ = requested paths (default to all)
 770 #
 771 cmd_status()
 772 {
 773         # parse $args after "submodule ... status".
 774         orig_flags=
 775         while test $# -ne 0
 776         do
 777                 case "$1" in
 778                 -q|--quiet)
 779                         GIT_QUIET=1
 780                         ;;
 781                 --cached)
 782                         cached=1
 783                         ;;
 784                 --recursive)
 785                         recursive=1
 786                         ;;
 787                 --)
 788                         shift
 789                         break
 790                         ;;
 791                 -*)
 792                         usage
 793                         ;;
 794                 *)
 795                         break
 796                         ;;
 797                 esac
 798                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 799                 shift
 800         done
 801
 802         module_list "$@" |
 803         while read mode sha1 stage path
 804         do
 805                 name=$(module_name "$path") || exit
 806                 url=$(git config submodule."$name".url)
 807                 displaypath="$prefix$path"
 808                 if test "$stage" = U
 809                 then
 810                         say "U$sha1 $displaypath"
 811                         continue
 812                 fi
 813                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 814                 then
 815                         say "-$sha1 $displaypath"
 816                         continue;
 817                 fi
 818                 set_name_rev "$path" "$sha1"
 819                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 820                 then
 821                         say " $sha1 $displaypath$revname"
 822                 else
 823                         if test -z "$cached"
 824                         then
 825                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 826                                 set_name_rev "$path" "$sha1"
 827                         fi
 828                         say "+$sha1 $displaypath$revname"
 829                 fi
 830
 831                 if test -n "$recursive"
 832                 then
 833                         (
 834                                 prefix="$displaypath/"
 835                                 clear_local_git_env
 836                                 cd "$path" &&
 837                                 eval cmd_status "$orig_args"
 838                         ) ||
 839                         die "Failed to recurse into submodule path '$path'"
 840                 fi
 841         done
 842 }
 843 #
 844 # Sync remote urls for submodules
 845 # This makes the value for remote.$remote.url match the value
 846 # specified in .gitmodules.
 847 #
 848 cmd_sync()
 849 {
 850         while test $# -ne 0
 851         do
 852                 case "$1" in
 853                 -q|--quiet)
 854                         GIT_QUIET=1
 855                         shift
 856                         ;;
 857                 --)
 858                         shift
 859                         break
 860                         ;;
 861                 -*)
 862                         usage
 863                         ;;
 864                 *)
 865                         break
 866                         ;;
 867                 esac
 868         done
 869         cd_to_toplevel
 870         module_list "$@" |
 871         while read mode sha1 stage path
 872         do
 873                 name=$(module_name "$path")
 874                 url=$(git config -f .gitmodules --get submodule."$name".url)
 875
 876                 # Possibly a url relative to parent
 877                 case "$url" in
 878                 ./*|../*)
 879                         url=$(resolve_relative_url "$url") || exit
 880                         ;;
 881                 esac
 882
 883                 say "Synchronizing submodule url for '$name'"
 884                 git config submodule."$name".url "$url"
 885
 886                 if test -e "$path"/.git
 887                 then
 888                 (
 889                         clear_local_git_env
 890                         cd "$path"
 891                         remote=$(get_default_remote)
 892                         git config remote."$remote".url "$url"
 893                 )
 894                 fi
 895         done
 896 }
 897
 898 # This loop parses the command line arguments to find the
 899 # subcommand name to dispatch.  Parsing of the subcommand specific
 900 # options are primarily done by the subcommand implementations.
 901 # Subcommand specific options such as --branch and --cached are
 902 # parsed here as well, for backward compatibility.
 903
 904 while test $# != 0 && test -z "$command"
 905 do
 906         case "$1" in
 907         add | foreach | init | update | status | summary | sync)
 908                 command=$1
 909                 ;;
 910         -q|--quiet)
 911                 GIT_QUIET=1
 912                 ;;
 913         -b|--branch)
 914                 case "$2" in
 915                 '')
 916                         usage
 917                         ;;
 918                 esac
 919                 branch="$2"; shift
 920                 ;;
 921         --cached)
 922                 cached="$1"
 923                 ;;
 924         --)
 925                 break
 926                 ;;
 927         -*)
 928                 usage
 929                 ;;
 930         *)
 931                 break
 932                 ;;
 933         esac
 934         shift
 935 done
 936
 937 # No command word defaults to "status"
 938 test -n "$command" || command=status
 939
 940 # "-b branch" is accepted only by "add"
 941 if test -n "$branch" && test "$command" != add
 942 then
 943         usage
 944 fi
 945
 946 # "--cached" is accepted only by "status" and "summary"
 947 if test -n "$cached" && test "$command" != status -a "$command" != summary
 948 then
 949         usage
 950 fi
 951
 952 "cmd_$command" "$@"