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="$repo"
 251                         ;;
 252                 esac
 253         else
 254
 255                 module_clone "$path" "$realrepo" "$reference" || exit
 256                 (
 257                         clear_local_git_env
 258                         cd "$path" &&
 259                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 260                         case "$branch" in
 261                         '') git checkout -f -q ;;
 262                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 263                         esac
 264                 ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
 265         fi
 266         git config submodule."$path".url "$url"
 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                 if test -z "$(git config "submodule.$name.url")"
 367                 then
 368                         url=$(git config -f .gitmodules submodule."$name".url)
 369                         test -z "$url" &&
 370                         die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
 371
 372                         # Possibly a url relative to parent
 373                         case "$url" in
 374                         ./*|../*)
 375                                 url=$(resolve_relative_url "$url") || exit
 376                                 ;;
 377                         esac
 378                         git config submodule."$name".url "$url" ||
 379                         die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
 380                 fi
 381
 382                 # Copy "update" setting when it is not set yet
 383                 upd="$(git config -f .gitmodules submodule."$name".update)"
 384                 test -z "$upd" ||
 385                 test -n "$(git config submodule."$name".update)" ||
 386                 git config submodule."$name".update "$upd" ||
 387                 die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
 388
 389                 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$path'")"
 390         done
 391 }
 392
 393 #
 394 # Update each submodule path to correct revision, using clone and checkout as needed
 395 #
 396 # $@ = requested paths (default to all)
 397 #
 398 cmd_update()
 399 {
 400         # parse $args after "submodule ... update".
 401         orig_flags=
 402         while test $# -ne 0
 403         do
 404                 case "$1" in
 405                 -q|--quiet)
 406                         GIT_QUIET=1
 407                         ;;
 408                 -i|--init)
 409                         init=1
 410                         ;;
 411                 -N|--no-fetch)
 412                         nofetch=1
 413                         ;;
 414                 -f|--force)
 415                         force=$1
 416                         ;;
 417                 -r|--rebase)
 418                         update="rebase"
 419                         ;;
 420                 --reference)
 421                         case "$2" in '') usage ;; esac
 422                         reference="--reference=$2"
 423                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 424                         shift
 425                         ;;
 426                 --reference=*)
 427                         reference="$1"
 428                         ;;
 429                 -m|--merge)
 430                         update="merge"
 431                         ;;
 432                 --recursive)
 433                         recursive=1
 434                         ;;
 435                 --)
 436                         shift
 437                         break
 438                         ;;
 439                 -*)
 440                         usage
 441                         ;;
 442                 *)
 443                         break
 444                         ;;
 445                 esac
 446                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 447                 shift
 448         done
 449
 450         if test -n "$init"
 451         then
 452                 cmd_init "--" "$@" || return
 453         fi
 454
 455         cloned_modules=
 456         module_list "$@" | {
 457         err=
 458         while read mode sha1 stage path
 459         do
 460                 if test "$stage" = U
 461                 then
 462                         echo >&2 "Skipping unmerged submodule $path"
 463                         continue
 464                 fi
 465                 name=$(module_name "$path") || exit
 466                 url=$(git config submodule."$name".url)
 467                 update_module=$(git config submodule."$name".update)
 468                 if test -z "$url"
 469                 then
 470                         # Only mention uninitialized submodules when its
 471                         # path have been specified
 472                         test "$#" != "0" &&
 473                         say "$(eval_gettext "Submodule path '\$path' not initialized
 474 Maybe you want to use 'update --init'?")"
 475                         continue
 476                 fi
 477
 478                 if ! test -d "$path"/.git -o -f "$path"/.git
 479                 then
 480                         module_clone "$path" "$url" "$reference"|| exit
 481                         cloned_modules="$cloned_modules;$name"
 482                         subsha1=
 483                 else
 484                         subsha1=$(clear_local_git_env; cd "$path" &&
 485                                 git rev-parse --verify HEAD) ||
 486                         die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
 487                 fi
 488
 489                 if ! test -z "$update"
 490                 then
 491                         update_module=$update
 492                 fi
 493
 494                 if test "$subsha1" != "$sha1"
 495                 then
 496                         subforce=$force
 497                         # If we don't already have a -f flag and the submodule has never been checked out
 498                         if test -z "$subsha1" -a -z "$force"
 499                         then
 500                                 subforce="-f"
 501                         fi
 502
 503                         if test -z "$nofetch"
 504                         then
 505                                 # Run fetch only if $sha1 isn't present or it
 506                                 # is not reachable from a ref.
 507                                 (clear_local_git_env; cd "$path" &&
 508                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 509                                          test -z "$rev") || git-fetch)) ||
 510                                 die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
 511                         fi
 512
 513                         # Is this something we just cloned?
 514                         case ";$cloned_modules;" in
 515                         *";$name;"*)
 516                                 # then there is no local change to integrate
 517                                 update_module= ;;
 518                         esac
 519
 520                         must_die_on_failure=
 521                         case "$update_module" in
 522                         rebase)
 523                                 command="git rebase"
 524                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$path'")"
 525                                 say_msg="$(eval_gettext "Submodule path '\$path': rebased into '\$sha1'")"
 526                                 must_die_on_failure=yes
 527                                 ;;
 528                         merge)
 529                                 command="git merge"
 530                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$path'")"
 531                                 say_msg="$(eval_gettext "Submodule path '\$path': merged in '\$sha1'")"
 532                                 must_die_on_failure=yes
 533                                 ;;
 534                         *)
 535                                 command="git checkout $subforce -q"
 536                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$path'")"
 537                                 say_msg="$(eval_gettext "Submodule path '\$path': checked out '\$sha1'")"
 538                                 ;;
 539                         esac
 540
 541                         if (clear_local_git_env; cd "$path" && $command "$sha1")
 542                         then
 543                                 say "$say_msg"
 544                         elif test -n "$must_die_on_failure"
 545                         then
 546                                 die_with_status 2 "$die_msg"
 547                         else
 548                                 err="${err};$die_msg"
 549                                 continue
 550                         fi
 551                 fi
 552
 553                 if test -n "$recursive"
 554                 then
 555                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags")
 556                         res=$?
 557                         if test $res -gt 0
 558                         then
 559                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 560                                 if test $res -eq 1
 561                                 then
 562                                         err="${err};$die_msg"
 563                                         continue
 564                                 else
 565                                         die_with_status $res "$die_msg"
 566                                 fi
 567                         fi
 568                 fi
 569         done
 570
 571         if test -n "$err"
 572         then
 573                 OIFS=$IFS
 574                 IFS=';'
 575                 for e in $err
 576                 do
 577                         if test -n "$e"
 578                         then
 579                                 echo >&2 "$e"
 580                         fi
 581                 done
 582                 IFS=$OIFS
 583                 exit 1
 584         fi
 585         }
 586 }
 587
 588 set_name_rev () {
 589         revname=$( (
 590                 clear_local_git_env
 591                 cd "$1" && {
 592                         git describe "$2" 2>/dev/null ||
 593                         git describe --tags "$2" 2>/dev/null ||
 594                         git describe --contains "$2" 2>/dev/null ||
 595                         git describe --all --always "$2"
 596                 }
 597         ) )
 598         test -z "$revname" || revname=" ($revname)"
 599 }
 600 #
 601 # Show commit summary for submodules in index or working tree
 602 #
 603 # If '--cached' is given, show summary between index and given commit,
 604 # or between working tree and given commit
 605 #
 606 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 607 #
 608 cmd_summary() {
 609         summary_limit=-1
 610         for_status=
 611         diff_cmd=diff-index
 612
 613         # parse $args after "submodule ... summary".
 614         while test $# -ne 0
 615         do
 616                 case "$1" in
 617                 --cached)
 618                         cached="$1"
 619                         ;;
 620                 --files)
 621                         files="$1"
 622                         ;;
 623                 --for-status)
 624                         for_status="$1"
 625                         ;;
 626                 -n|--summary-limit)
 627                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 628                         then
 629                                 :
 630                         else
 631                                 usage
 632                         fi
 633                         shift
 634                         ;;
 635                 --)
 636                         shift
 637                         break
 638                         ;;
 639                 -*)
 640                         usage
 641                         ;;
 642                 *)
 643                         break
 644                         ;;
 645                 esac
 646                 shift
 647         done
 648
 649         test $summary_limit = 0 && return
 650
 651         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 652         then
 653                 head=$rev
 654                 test $# = 0 || shift
 655         elif test -z "$1" -o "$1" = "HEAD"
 656         then
 657                 # before the first commit: compare with an empty tree
 658                 head=$(git hash-object -w -t tree --stdin </dev/null)
 659                 test -z "$1" || shift
 660         else
 661                 head="HEAD"
 662         fi
 663
 664         if [ -n "$files" ]
 665         then
 666                 test -n "$cached" &&
 667                 die "$(gettext -- "--cached cannot be used with --files")"
 668                 diff_cmd=diff-files
 669                 head=
 670         fi
 671
 672         cd_to_toplevel
 673         # Get modified modules cared by user
 674         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 675                 sane_egrep '^:([0-7]* )?160000' |
 676                 while read mod_src mod_dst sha1_src sha1_dst status name
 677                 do
 678                         # Always show modules deleted or type-changed (blob<->module)
 679                         test $status = D -o $status = T && echo "$name" && continue
 680                         # Also show added or modified modules which are checked out
 681                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 682                         echo "$name"
 683                 done
 684         )
 685
 686         test -z "$modules" && return
 687
 688         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 689         sane_egrep '^:([0-7]* )?160000' |
 690         cut -c2- |
 691         while read mod_src mod_dst sha1_src sha1_dst status name
 692         do
 693                 if test -z "$cached" &&
 694                         test $sha1_dst = 0000000000000000000000000000000000000000
 695                 then
 696                         case "$mod_dst" in
 697                         160000)
 698                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 699                                 ;;
 700                         100644 | 100755 | 120000)
 701                                 sha1_dst=$(git hash-object $name)
 702                                 ;;
 703                         000000)
 704                                 ;; # removed
 705                         *)
 706                                 # unexpected type
 707                                 (
 708                                         eval_gettext "unexpected mode \$mod_dst" &&
 709                                         echo
 710                                 ) >&2
 711                                 continue ;;
 712                         esac
 713                 fi
 714                 missing_src=
 715                 missing_dst=
 716
 717                 test $mod_src = 160000 &&
 718                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 719                 missing_src=t
 720
 721                 test $mod_dst = 160000 &&
 722                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 723                 missing_dst=t
 724
 725                 total_commits=
 726                 case "$missing_src,$missing_dst" in
 727                 t,)
 728                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 729                         ;;
 730                 ,t)
 731                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 732                         ;;
 733                 t,t)
 734                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 735                         ;;
 736                 *)
 737                         errmsg=
 738                         total_commits=$(
 739                         if test $mod_src = 160000 -a $mod_dst = 160000
 740                         then
 741                                 range="$sha1_src...$sha1_dst"
 742                         elif test $mod_src = 160000
 743                         then
 744                                 range=$sha1_src
 745                         else
 746                                 range=$sha1_dst
 747                         fi
 748                         GIT_DIR="$name/.git" \
 749                         git rev-list --first-parent $range -- | wc -l
 750                         )
 751                         total_commits=" ($(($total_commits + 0)))"
 752                         ;;
 753                 esac
 754
 755                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 756                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 757                 if test $status = T
 758                 then
 759                         blob="$(gettext "blob")"
 760                         submodule="$(gettext "submodule")"
 761                         if test $mod_dst = 160000
 762                         then
 763                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 764                         else
 765                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 766                         fi
 767                 else
 768                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 769                 fi
 770                 if test -n "$errmsg"
 771                 then
 772                         # Don't give error msg for modification whose dst is not submodule
 773                         # i.e. deleted or changed to blob
 774                         test $mod_dst = 160000 && echo "$errmsg"
 775                 else
 776                         if test $mod_src = 160000 -a $mod_dst = 160000
 777                         then
 778                                 limit=
 779                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 780                                 GIT_DIR="$name/.git" \
 781                                 git log $limit --pretty='format:  %m %s' \
 782                                 --first-parent $sha1_src...$sha1_dst
 783                         elif test $mod_dst = 160000
 784                         then
 785                                 GIT_DIR="$name/.git" \
 786                                 git log --pretty='format:  > %s' -1 $sha1_dst
 787                         else
 788                                 GIT_DIR="$name/.git" \
 789                                 git log --pretty='format:  < %s' -1 $sha1_src
 790                         fi
 791                         echo
 792                 fi
 793                 echo
 794         done |
 795         if test -n "$for_status"; then
 796                 if [ -n "$files" ]; then
 797                         gettext "# Submodules changed but not updated:"; echo
 798                 else
 799                         gettext "# Submodule changes to be committed:"; echo
 800                 fi
 801                 echo "#"
 802                 sed -e 's|^|# |' -e 's|^# $|#|'
 803         else
 804                 cat
 805         fi
 806 }
 807 #
 808 # List all submodules, prefixed with:
 809 #  - submodule not initialized
 810 #  + different revision checked out
 811 #
 812 # If --cached was specified the revision in the index will be printed
 813 # instead of the currently checked out revision.
 814 #
 815 # $@ = requested paths (default to all)
 816 #
 817 cmd_status()
 818 {
 819         # parse $args after "submodule ... status".
 820         orig_flags=
 821         while test $# -ne 0
 822         do
 823                 case "$1" in
 824                 -q|--quiet)
 825                         GIT_QUIET=1
 826                         ;;
 827                 --cached)
 828                         cached=1
 829                         ;;
 830                 --recursive)
 831                         recursive=1
 832                         ;;
 833                 --)
 834                         shift
 835                         break
 836                         ;;
 837                 -*)
 838                         usage
 839                         ;;
 840                 *)
 841                         break
 842                         ;;
 843                 esac
 844                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 845                 shift
 846         done
 847
 848         module_list "$@" |
 849         while read mode sha1 stage path
 850         do
 851                 name=$(module_name "$path") || exit
 852                 url=$(git config submodule."$name".url)
 853                 displaypath="$prefix$path"
 854                 if test "$stage" = U
 855                 then
 856                         say "U$sha1 $displaypath"
 857                         continue
 858                 fi
 859                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 860                 then
 861                         say "-$sha1 $displaypath"
 862                         continue;
 863                 fi
 864                 set_name_rev "$path" "$sha1"
 865                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 866                 then
 867                         say " $sha1 $displaypath$revname"
 868                 else
 869                         if test -z "$cached"
 870                         then
 871                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 872                                 set_name_rev "$path" "$sha1"
 873                         fi
 874                         say "+$sha1 $displaypath$revname"
 875                 fi
 876
 877                 if test -n "$recursive"
 878                 then
 879                         (
 880                                 prefix="$displaypath/"
 881                                 clear_local_git_env
 882                                 cd "$path" &&
 883                                 eval cmd_status "$orig_args"
 884                         ) ||
 885                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 886                 fi
 887         done
 888 }
 889 #
 890 # Sync remote urls for submodules
 891 # This makes the value for remote.$remote.url match the value
 892 # specified in .gitmodules.
 893 #
 894 cmd_sync()
 895 {
 896         while test $# -ne 0
 897         do
 898                 case "$1" in
 899                 -q|--quiet)
 900                         GIT_QUIET=1
 901                         shift
 902                         ;;
 903                 --)
 904                         shift
 905                         break
 906                         ;;
 907                 -*)
 908                         usage
 909                         ;;
 910                 *)
 911                         break
 912                         ;;
 913                 esac
 914         done
 915         cd_to_toplevel
 916         module_list "$@" |
 917         while read mode sha1 stage path
 918         do
 919                 name=$(module_name "$path")
 920                 url=$(git config -f .gitmodules --get submodule."$name".url)
 921
 922                 # Possibly a url relative to parent
 923                 case "$url" in
 924                 ./*|../*)
 925                         url=$(resolve_relative_url "$url") || exit
 926                         ;;
 927                 esac
 928
 929                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
 930                 then
 931                         say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 932                         git config submodule."$name".url "$url"
 933
 934                         if test -e "$path"/.git
 935                         then
 936                         (
 937                                 clear_local_git_env
 938                                 cd "$path"
 939                                 remote=$(get_default_remote)
 940                                 git config remote."$remote".url "$url"
 941                         )
 942                         fi
 943                 fi
 944         done
 945 }
 946
 947 # This loop parses the command line arguments to find the
 948 # subcommand name to dispatch.  Parsing of the subcommand specific
 949 # options are primarily done by the subcommand implementations.
 950 # Subcommand specific options such as --branch and --cached are
 951 # parsed here as well, for backward compatibility.
 952
 953 while test $# != 0 && test -z "$command"
 954 do
 955         case "$1" in
 956         add | foreach | init | update | status | summary | sync)
 957                 command=$1
 958                 ;;
 959         -q|--quiet)
 960                 GIT_QUIET=1
 961                 ;;
 962         -b|--branch)
 963                 case "$2" in
 964                 '')
 965                         usage
 966                         ;;
 967                 esac
 968                 branch="$2"; shift
 969                 ;;
 970         --cached)
 971                 cached="$1"
 972                 ;;
 973         --)
 974                 break
 975                 ;;
 976         -*)
 977                 usage
 978                 ;;
 979         *)
 980                 break
 981                 ;;
 982         esac
 983         shift
 984 done
 985
 986 # No command word defaults to "status"
 987 test -n "$command" || command=status
 988
 989 # "-b branch" is accepted only by "add"
 990 if test -n "$branch" && test "$command" != add
 991 then
 992         usage
 993 fi
 994
 995 # "--cached" is accepted only by "status" and "summary"
 996 if test -n "$cached" && test "$command" != status -a "$command" != summary
 997 then
 998         usage
 999 fi
1000
1001 "cmd_$command" "$@"