git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # git-submodule.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                 remoteurl=$(pwd) # the repository is its own authoritative upstream
  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         sm_path="$1"
 105         re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 106         name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 107                 sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 108         test -z "$name" &&
 109         die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$sm_path'")"
 110         echo "$name"
 111 }
 112
 113 #
 114 # Clone a submodule
 115 #
 116 # Prior to calling, cmd_update checks that a possibly existing
 117 # path is not a git repository.
 118 # Likewise, cmd_add checks that path does not exist at all,
 119 # since it is the location of a new submodule.
 120 #
 121 module_clone()
 122 {
 123         sm_path=$1
 124         url=$2
 125         reference="$3"
 126         quiet=
 127         if test -n "$GIT_QUIET"
 128         then
 129                 quiet=-q
 130         fi
 131
 132         gitdir=
 133         gitdir_base=
 134         name=$(module_name "$sm_path" 2>/dev/null)
 135         test -n "$name" || name="$sm_path"
 136         base_name=$(dirname "$name")
 137
 138         gitdir=$(git rev-parse --git-dir)
 139         gitdir_base="$gitdir/modules/$base_name"
 140         gitdir="$gitdir/modules/$name"
 141
 142         if test -d "$gitdir"
 143         then
 144                 mkdir -p "$sm_path"
 145                 rm -f "$gitdir/index"
 146         else
 147                 mkdir -p "$gitdir_base"
 148                 git clone $quiet -n ${reference:+"$reference"} \
 149                         --separate-git-dir "$gitdir" "$url" "$sm_path" ||
 150                 die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
 151         fi
 152
 153         # We already are at the root of the work tree but cd_to_toplevel will
 154         # resolve any symlinks that might be present in $PWD
 155         a=$(cd_to_toplevel && cd "$gitdir" && pwd)/
 156         b=$(cd_to_toplevel && cd "$sm_path" && pwd)/
 157         # normalize Windows-style absolute paths to POSIX-style absolute paths
 158         case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
 159         case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
 160         # Remove all common leading directories after a sanity check
 161         if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
 162                 die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
 163         fi
 164         while test "${a%%/*}" = "${b%%/*}"
 165         do
 166                 a=${a#*/}
 167                 b=${b#*/}
 168         done
 169         # Now chop off the trailing '/'s that were added in the beginning
 170         a=${a%/}
 171         b=${b%/}
 172
 173         # Turn each leading "*/" component into "../"
 174         rel=$(echo $b | sed -e 's|[^/][^/]*|..|g')
 175         echo "gitdir: $rel/$a" >"$sm_path/.git"
 176
 177         rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
 178         (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 179 }
 180
 181 #
 182 # Add a new submodule to the working tree, .gitmodules and the index
 183 #
 184 # $@ = repo path
 185 #
 186 # optional branch is stored in global branch variable
 187 #
 188 cmd_add()
 189 {
 190         # parse $args after "submodule ... add".
 191         while test $# -ne 0
 192         do
 193                 case "$1" in
 194                 -b | --branch)
 195                         case "$2" in '') usage ;; esac
 196                         branch=$2
 197                         shift
 198                         ;;
 199                 -f | --force)
 200                         force=$1
 201                         ;;
 202                 -q|--quiet)
 203                         GIT_QUIET=1
 204                         ;;
 205                 --reference)
 206                         case "$2" in '') usage ;; esac
 207                         reference="--reference=$2"
 208                         shift
 209                         ;;
 210                 --reference=*)
 211                         reference="$1"
 212                         shift
 213                         ;;
 214                 --)
 215                         shift
 216                         break
 217                         ;;
 218                 -*)
 219                         usage
 220                         ;;
 221                 *)
 222                         break
 223                         ;;
 224                 esac
 225                 shift
 226         done
 227
 228         repo=$1
 229         sm_path=$2
 230
 231         if test -z "$sm_path"; then
 232                 sm_path=$(echo "$repo" |
 233                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 234         fi
 235
 236         if test -z "$repo" -o -z "$sm_path"; then
 237                 usage
 238         fi
 239
 240         # assure repo is absolute or relative to parent
 241         case "$repo" in
 242         ./*|../*)
 243                 # dereference source url relative to parent's url
 244                 realrepo=$(resolve_relative_url "$repo") || exit
 245                 ;;
 246         *:*|/*)
 247                 # absolute url
 248                 realrepo=$repo
 249                 ;;
 250         *)
 251                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 252         ;;
 253         esac
 254
 255         # normalize path:
 256         # multiple //; leading ./; /./; /../; trailing /
 257         sm_path=$(printf '%s/\n' "$sm_path" |
 258                 sed -e '
 259                         s|//*|/|g
 260                         s|^\(\./\)*||
 261                         s|/\./|/|g
 262                         :start
 263                         s|\([^/]*\)/\.\./||
 264                         tstart
 265                         s|/*$||
 266                 ')
 267         git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 268         die "$(eval_gettext "'\$sm_path' already exists in the index")"
 269
 270         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 271         then
 272                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 273 \$sm_path
 274 Use -f if you really want to add it." >&2
 275                 exit 1
 276         fi
 277
 278         # perhaps the path exists and is already a git repo, else clone it
 279         if test -e "$sm_path"
 280         then
 281                 if test -d "$sm_path"/.git -o -f "$sm_path"/.git
 282                 then
 283                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 284                 else
 285                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 286                 fi
 287
 288         else
 289
 290                 module_clone "$sm_path" "$realrepo" "$reference" || exit
 291                 (
 292                         clear_local_git_env
 293                         cd "$sm_path" &&
 294                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 295                         case "$branch" in
 296                         '') git checkout -f -q ;;
 297                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 298                         esac
 299                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 300         fi
 301         git config submodule."$sm_path".url "$realrepo"
 302
 303         git add $force "$sm_path" ||
 304         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 305
 306         git config -f .gitmodules submodule."$sm_path".path "$sm_path" &&
 307         git config -f .gitmodules submodule."$sm_path".url "$repo" &&
 308         git add --force .gitmodules ||
 309         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 310 }
 311
 312 #
 313 # Execute an arbitrary command sequence in each checked out
 314 # submodule
 315 #
 316 # $@ = command to execute
 317 #
 318 cmd_foreach()
 319 {
 320         # parse $args after "submodule ... foreach".
 321         while test $# -ne 0
 322         do
 323                 case "$1" in
 324                 -q|--quiet)
 325                         GIT_QUIET=1
 326                         ;;
 327                 --recursive)
 328                         recursive=1
 329                         ;;
 330                 -*)
 331                         usage
 332                         ;;
 333                 *)
 334                         break
 335                         ;;
 336                 esac
 337                 shift
 338         done
 339
 340         toplevel=$(pwd)
 341
 342         # dup stdin so that it can be restored when running the external
 343         # command in the subshell (and a recursive call to this function)
 344         exec 3<&0
 345
 346         module_list |
 347         while read mode sha1 stage sm_path
 348         do
 349                 if test -e "$sm_path"/.git
 350                 then
 351                         say "$(eval_gettext "Entering '\$prefix\$sm_path'")"
 352                         name=$(module_name "$sm_path")
 353                         (
 354                                 prefix="$prefix$sm_path/"
 355                                 clear_local_git_env
 356                                 # we make $path available to scripts ...
 357                                 path=$sm_path
 358                                 cd "$sm_path" &&
 359                                 eval "$@" &&
 360                                 if test -n "$recursive"
 361                                 then
 362                                         cmd_foreach "--recursive" "$@"
 363                                 fi
 364                         ) <&3 3<&- ||
 365                         die "$(eval_gettext "Stopping at '\$sm_path'; script returned non-zero status.")"
 366                 fi
 367         done
 368 }
 369
 370 #
 371 # Register submodules in .git/config
 372 #
 373 # $@ = requested paths (default to all)
 374 #
 375 cmd_init()
 376 {
 377         # parse $args after "submodule ... init".
 378         while test $# -ne 0
 379         do
 380                 case "$1" in
 381                 -q|--quiet)
 382                         GIT_QUIET=1
 383                         ;;
 384                 --)
 385                         shift
 386                         break
 387                         ;;
 388                 -*)
 389                         usage
 390                         ;;
 391                 *)
 392                         break
 393                         ;;
 394                 esac
 395                 shift
 396         done
 397
 398         module_list "$@" |
 399         while read mode sha1 stage sm_path
 400         do
 401                 name=$(module_name "$sm_path") || exit
 402
 403                 # Copy url setting when it is not set yet
 404                 if test -z "$(git config "submodule.$name.url")"
 405                 then
 406                         url=$(git config -f .gitmodules submodule."$name".url)
 407                         test -z "$url" &&
 408                         die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"
 409
 410                         # Possibly a url relative to parent
 411                         case "$url" in
 412                         ./*|../*)
 413                                 url=$(resolve_relative_url "$url") || exit
 414                                 ;;
 415                         esac
 416                         git config submodule."$name".url "$url" ||
 417                         die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"
 418
 419                         say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
 420                 fi
 421
 422                 # Copy "update" setting when it is not set yet
 423                 upd="$(git config -f .gitmodules submodule."$name".update)"
 424                 test -z "$upd" ||
 425                 test -n "$(git config submodule."$name".update)" ||
 426                 git config submodule."$name".update "$upd" ||
 427                 die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
 428         done
 429 }
 430
 431 #
 432 # Update each submodule path to correct revision, using clone and checkout as needed
 433 #
 434 # $@ = requested paths (default to all)
 435 #
 436 cmd_update()
 437 {
 438         # parse $args after "submodule ... update".
 439         orig_flags=
 440         while test $# -ne 0
 441         do
 442                 case "$1" in
 443                 -q|--quiet)
 444                         GIT_QUIET=1
 445                         ;;
 446                 -i|--init)
 447                         init=1
 448                         ;;
 449                 -N|--no-fetch)
 450                         nofetch=1
 451                         ;;
 452                 -f|--force)
 453                         force=$1
 454                         ;;
 455                 -r|--rebase)
 456                         update="rebase"
 457                         ;;
 458                 --reference)
 459                         case "$2" in '') usage ;; esac
 460                         reference="--reference=$2"
 461                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 462                         shift
 463                         ;;
 464                 --reference=*)
 465                         reference="$1"
 466                         ;;
 467                 -m|--merge)
 468                         update="merge"
 469                         ;;
 470                 --recursive)
 471                         recursive=1
 472                         ;;
 473                 --checkout)
 474                         update="checkout"
 475                         ;;
 476                 --)
 477                         shift
 478                         break
 479                         ;;
 480                 -*)
 481                         usage
 482                         ;;
 483                 *)
 484                         break
 485                         ;;
 486                 esac
 487                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 488                 shift
 489         done
 490
 491         if test -n "$init"
 492         then
 493                 cmd_init "--" "$@" || return
 494         fi
 495
 496         cloned_modules=
 497         module_list "$@" | {
 498         err=
 499         while read mode sha1 stage sm_path
 500         do
 501                 if test "$stage" = U
 502                 then
 503                         echo >&2 "Skipping unmerged submodule $sm_path"
 504                         continue
 505                 fi
 506                 name=$(module_name "$sm_path") || exit
 507                 url=$(git config submodule."$name".url)
 508                 if ! test -z "$update"
 509                 then
 510                         update_module=$update
 511                 else
 512                         update_module=$(git config submodule."$name".update)
 513                 fi
 514
 515                 if test "$update_module" = "none"
 516                 then
 517                         echo "Skipping submodule '$sm_path'"
 518                         continue
 519                 fi
 520
 521                 if test -z "$url"
 522                 then
 523                         # Only mention uninitialized submodules when its
 524                         # path have been specified
 525                         test "$#" != "0" &&
 526                         say "$(eval_gettext "Submodule path '\$sm_path' not initialized
 527 Maybe you want to use 'update --init'?")"
 528                         continue
 529                 fi
 530
 531                 if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 532                 then
 533                         module_clone "$sm_path" "$url" "$reference"|| exit
 534                         cloned_modules="$cloned_modules;$name"
 535                         subsha1=
 536                 else
 537                         subsha1=$(clear_local_git_env; cd "$sm_path" &&
 538                                 git rev-parse --verify HEAD) ||
 539                         die "$(eval_gettext "Unable to find current revision in submodule path '\$sm_path'")"
 540                 fi
 541
 542                 if test "$subsha1" != "$sha1"
 543                 then
 544                         subforce=$force
 545                         # If we don't already have a -f flag and the submodule has never been checked out
 546                         if test -z "$subsha1" -a -z "$force"
 547                         then
 548                                 subforce="-f"
 549                         fi
 550
 551                         if test -z "$nofetch"
 552                         then
 553                                 # Run fetch only if $sha1 isn't present or it
 554                                 # is not reachable from a ref.
 555                                 (clear_local_git_env; cd "$sm_path" &&
 556                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 557                                          test -z "$rev") || git-fetch)) ||
 558                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 559                         fi
 560
 561                         # Is this something we just cloned?
 562                         case ";$cloned_modules;" in
 563                         *";$name;"*)
 564                                 # then there is no local change to integrate
 565                                 update_module= ;;
 566                         esac
 567
 568                         must_die_on_failure=
 569                         case "$update_module" in
 570                         rebase)
 571                                 command="git rebase"
 572                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$sm_path'")"
 573                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': rebased into '\$sha1'")"
 574                                 must_die_on_failure=yes
 575                                 ;;
 576                         merge)
 577                                 command="git merge"
 578                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$sm_path'")"
 579                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': merged in '\$sha1'")"
 580                                 must_die_on_failure=yes
 581                                 ;;
 582                         *)
 583                                 command="git checkout $subforce -q"
 584                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$sm_path'")"
 585                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': checked out '\$sha1'")"
 586                                 ;;
 587                         esac
 588
 589                         if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
 590                         then
 591                                 say "$say_msg"
 592                         elif test -n "$must_die_on_failure"
 593                         then
 594                                 die_with_status 2 "$die_msg"
 595                         else
 596                                 err="${err};$die_msg"
 597                                 continue
 598                         fi
 599                 fi
 600
 601                 if test -n "$recursive"
 602                 then
 603                         (clear_local_git_env; cd "$sm_path" && eval cmd_update "$orig_flags")
 604                         res=$?
 605                         if test $res -gt 0
 606                         then
 607                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 608                                 if test $res -eq 1
 609                                 then
 610                                         err="${err};$die_msg"
 611                                         continue
 612                                 else
 613                                         die_with_status $res "$die_msg"
 614                                 fi
 615                         fi
 616                 fi
 617         done
 618
 619         if test -n "$err"
 620         then
 621                 OIFS=$IFS
 622                 IFS=';'
 623                 for e in $err
 624                 do
 625                         if test -n "$e"
 626                         then
 627                                 echo >&2 "$e"
 628                         fi
 629                 done
 630                 IFS=$OIFS
 631                 exit 1
 632         fi
 633         }
 634 }
 635
 636 set_name_rev () {
 637         revname=$( (
 638                 clear_local_git_env
 639                 cd "$1" && {
 640                         git describe "$2" 2>/dev/null ||
 641                         git describe --tags "$2" 2>/dev/null ||
 642                         git describe --contains "$2" 2>/dev/null ||
 643                         git describe --all --always "$2"
 644                 }
 645         ) )
 646         test -z "$revname" || revname=" ($revname)"
 647 }
 648 #
 649 # Show commit summary for submodules in index or working tree
 650 #
 651 # If '--cached' is given, show summary between index and given commit,
 652 # or between working tree and given commit
 653 #
 654 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 655 #
 656 cmd_summary() {
 657         summary_limit=-1
 658         for_status=
 659         diff_cmd=diff-index
 660
 661         # parse $args after "submodule ... summary".
 662         while test $# -ne 0
 663         do
 664                 case "$1" in
 665                 --cached)
 666                         cached="$1"
 667                         ;;
 668                 --files)
 669                         files="$1"
 670                         ;;
 671                 --for-status)
 672                         for_status="$1"
 673                         ;;
 674                 -n|--summary-limit)
 675                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 676                         then
 677                                 :
 678                         else
 679                                 usage
 680                         fi
 681                         shift
 682                         ;;
 683                 --)
 684                         shift
 685                         break
 686                         ;;
 687                 -*)
 688                         usage
 689                         ;;
 690                 *)
 691                         break
 692                         ;;
 693                 esac
 694                 shift
 695         done
 696
 697         test $summary_limit = 0 && return
 698
 699         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 700         then
 701                 head=$rev
 702                 test $# = 0 || shift
 703         elif test -z "$1" -o "$1" = "HEAD"
 704         then
 705                 # before the first commit: compare with an empty tree
 706                 head=$(git hash-object -w -t tree --stdin </dev/null)
 707                 test -z "$1" || shift
 708         else
 709                 head="HEAD"
 710         fi
 711
 712         if [ -n "$files" ]
 713         then
 714                 test -n "$cached" &&
 715                 die "$(gettext -- "--cached cannot be used with --files")"
 716                 diff_cmd=diff-files
 717                 head=
 718         fi
 719
 720         cd_to_toplevel
 721         # Get modified modules cared by user
 722         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 723                 sane_egrep '^:([0-7]* )?160000' |
 724                 while read mod_src mod_dst sha1_src sha1_dst status name
 725                 do
 726                         # Always show modules deleted or type-changed (blob<->module)
 727                         test $status = D -o $status = T && echo "$name" && continue
 728                         # Also show added or modified modules which are checked out
 729                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 730                         echo "$name"
 731                 done
 732         )
 733
 734         test -z "$modules" && return
 735
 736         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 737         sane_egrep '^:([0-7]* )?160000' |
 738         cut -c2- |
 739         while read mod_src mod_dst sha1_src sha1_dst status name
 740         do
 741                 if test -z "$cached" &&
 742                         test $sha1_dst = 0000000000000000000000000000000000000000
 743                 then
 744                         case "$mod_dst" in
 745                         160000)
 746                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 747                                 ;;
 748                         100644 | 100755 | 120000)
 749                                 sha1_dst=$(git hash-object $name)
 750                                 ;;
 751                         000000)
 752                                 ;; # removed
 753                         *)
 754                                 # unexpected type
 755                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 756                                 continue ;;
 757                         esac
 758                 fi
 759                 missing_src=
 760                 missing_dst=
 761
 762                 test $mod_src = 160000 &&
 763                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 764                 missing_src=t
 765
 766                 test $mod_dst = 160000 &&
 767                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 768                 missing_dst=t
 769
 770                 total_commits=
 771                 case "$missing_src,$missing_dst" in
 772                 t,)
 773                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 774                         ;;
 775                 ,t)
 776                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 777                         ;;
 778                 t,t)
 779                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 780                         ;;
 781                 *)
 782                         errmsg=
 783                         total_commits=$(
 784                         if test $mod_src = 160000 -a $mod_dst = 160000
 785                         then
 786                                 range="$sha1_src...$sha1_dst"
 787                         elif test $mod_src = 160000
 788                         then
 789                                 range=$sha1_src
 790                         else
 791                                 range=$sha1_dst
 792                         fi
 793                         GIT_DIR="$name/.git" \
 794                         git rev-list --first-parent $range -- | wc -l
 795                         )
 796                         total_commits=" ($(($total_commits + 0)))"
 797                         ;;
 798                 esac
 799
 800                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 801                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 802                 if test $status = T
 803                 then
 804                         blob="$(gettext "blob")"
 805                         submodule="$(gettext "submodule")"
 806                         if test $mod_dst = 160000
 807                         then
 808                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 809                         else
 810                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 811                         fi
 812                 else
 813                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 814                 fi
 815                 if test -n "$errmsg"
 816                 then
 817                         # Don't give error msg for modification whose dst is not submodule
 818                         # i.e. deleted or changed to blob
 819                         test $mod_dst = 160000 && echo "$errmsg"
 820                 else
 821                         if test $mod_src = 160000 -a $mod_dst = 160000
 822                         then
 823                                 limit=
 824                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 825                                 GIT_DIR="$name/.git" \
 826                                 git log $limit --pretty='format:  %m %s' \
 827                                 --first-parent $sha1_src...$sha1_dst
 828                         elif test $mod_dst = 160000
 829                         then
 830                                 GIT_DIR="$name/.git" \
 831                                 git log --pretty='format:  > %s' -1 $sha1_dst
 832                         else
 833                                 GIT_DIR="$name/.git" \
 834                                 git log --pretty='format:  < %s' -1 $sha1_src
 835                         fi
 836                         echo
 837                 fi
 838                 echo
 839         done |
 840         if test -n "$for_status"; then
 841                 if [ -n "$files" ]; then
 842                         gettextln "# Submodules changed but not updated:"
 843                 else
 844                         gettextln "# Submodule changes to be committed:"
 845                 fi
 846                 echo "#"
 847                 sed -e 's|^|# |' -e 's|^# $|#|'
 848         else
 849                 cat
 850         fi
 851 }
 852 #
 853 # List all submodules, prefixed with:
 854 #  - submodule not initialized
 855 #  + different revision checked out
 856 #
 857 # If --cached was specified the revision in the index will be printed
 858 # instead of the currently checked out revision.
 859 #
 860 # $@ = requested paths (default to all)
 861 #
 862 cmd_status()
 863 {
 864         # parse $args after "submodule ... status".
 865         orig_flags=
 866         while test $# -ne 0
 867         do
 868                 case "$1" in
 869                 -q|--quiet)
 870                         GIT_QUIET=1
 871                         ;;
 872                 --cached)
 873                         cached=1
 874                         ;;
 875                 --recursive)
 876                         recursive=1
 877                         ;;
 878                 --)
 879                         shift
 880                         break
 881                         ;;
 882                 -*)
 883                         usage
 884                         ;;
 885                 *)
 886                         break
 887                         ;;
 888                 esac
 889                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 890                 shift
 891         done
 892
 893         module_list "$@" |
 894         while read mode sha1 stage sm_path
 895         do
 896                 name=$(module_name "$sm_path") || exit
 897                 url=$(git config submodule."$name".url)
 898                 displaypath="$prefix$sm_path"
 899                 if test "$stage" = U
 900                 then
 901                         say "U$sha1 $displaypath"
 902                         continue
 903                 fi
 904                 if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 905                 then
 906                         say "-$sha1 $displaypath"
 907                         continue;
 908                 fi
 909                 set_name_rev "$sm_path" "$sha1"
 910                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
 911                 then
 912                         say " $sha1 $displaypath$revname"
 913                 else
 914                         if test -z "$cached"
 915                         then
 916                                 sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
 917                                 set_name_rev "$sm_path" "$sha1"
 918                         fi
 919                         say "+$sha1 $displaypath$revname"
 920                 fi
 921
 922                 if test -n "$recursive"
 923                 then
 924                         (
 925                                 prefix="$displaypath/"
 926                                 clear_local_git_env
 927                                 cd "$sm_path" &&
 928                                 eval cmd_status "$orig_args"
 929                         ) ||
 930                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 931                 fi
 932         done
 933 }
 934 #
 935 # Sync remote urls for submodules
 936 # This makes the value for remote.$remote.url match the value
 937 # specified in .gitmodules.
 938 #
 939 cmd_sync()
 940 {
 941         while test $# -ne 0
 942         do
 943                 case "$1" in
 944                 -q|--quiet)
 945                         GIT_QUIET=1
 946                         shift
 947                         ;;
 948                 --)
 949                         shift
 950                         break
 951                         ;;
 952                 -*)
 953                         usage
 954                         ;;
 955                 *)
 956                         break
 957                         ;;
 958                 esac
 959         done
 960         cd_to_toplevel
 961         module_list "$@" |
 962         while read mode sha1 stage sm_path
 963         do
 964                 name=$(module_name "$sm_path")
 965                 url=$(git config -f .gitmodules --get submodule."$name".url)
 966
 967                 # Possibly a url relative to parent
 968                 case "$url" in
 969                 ./*|../*)
 970                         url=$(resolve_relative_url "$url") || exit
 971                         ;;
 972                 esac
 973
 974                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
 975                 then
 976                         say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 977                         git config submodule."$name".url "$url"
 978
 979                         if test -e "$sm_path"/.git
 980                         then
 981                         (
 982                                 clear_local_git_env
 983                                 cd "$sm_path"
 984                                 remote=$(get_default_remote)
 985                                 git config remote."$remote".url "$url"
 986                         )
 987                         fi
 988                 fi
 989         done
 990 }
 991
 992 # This loop parses the command line arguments to find the
 993 # subcommand name to dispatch.  Parsing of the subcommand specific
 994 # options are primarily done by the subcommand implementations.
 995 # Subcommand specific options such as --branch and --cached are
 996 # parsed here as well, for backward compatibility.
 997
 998 while test $# != 0 && test -z "$command"
 999 do
1000         case "$1" in
1001         add | foreach | init | update | status | summary | sync)
1002                 command=$1
1003                 ;;
1004         -q|--quiet)
1005                 GIT_QUIET=1
1006                 ;;
1007         -b|--branch)
1008                 case "$2" in
1009                 '')
1010                         usage
1011                         ;;
1012                 esac
1013                 branch="$2"; shift
1014                 ;;
1015         --cached)
1016                 cached="$1"
1017                 ;;
1018         --)
1019                 break
1020                 ;;
1021         -*)
1022                 usage
1023                 ;;
1024         *)
1025                 break
1026                 ;;
1027         esac
1028         shift
1029 done
1030
1031 # No command word defaults to "status"
1032 test -n "$command" || command=status
1033
1034 # "-b branch" is accepted only by "add"
1035 if test -n "$branch" && test "$command" != add
1036 then
1037         usage
1038 fi
1039
1040 # "--cached" is accepted only by "status" and "summary"
1041 if test -n "$cached" && test "$command" != status -a "$command" != summary
1042 then
1043         usage
1044 fi
1045
1046 "cmd_$command" "$@"