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                 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         a=$(cd "$gitdir" && pwd)/
 154         b=$(cd "$sm_path" && pwd)/
 155         # normalize Windows-style absolute paths to POSIX-style absolute paths
 156         case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
 157         case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
 158         # Remove all common leading directories after a sanity check
 159         if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
 160                 die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
 161         fi
 162         while test "${a%%/*}" = "${b%%/*}"
 163         do
 164                 a=${a#*/}
 165                 b=${b#*/}
 166         done
 167         # Now chop off the trailing '/'s that were added in the beginning
 168         a=${a%/}
 169         b=${b%/}
 170
 171         # Turn each leading "*/" component into "../"
 172         rel=$(echo $b | sed -e 's|[^/][^/]*|..|g')
 173         echo "gitdir: $rel/$a" >"$sm_path/.git"
 174
 175         rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
 176         (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 177 }
 178
 179 #
 180 # Add a new submodule to the working tree, .gitmodules and the index
 181 #
 182 # $@ = repo path
 183 #
 184 # optional branch is stored in global branch variable
 185 #
 186 cmd_add()
 187 {
 188         # parse $args after "submodule ... add".
 189         while test $# -ne 0
 190         do
 191                 case "$1" in
 192                 -b | --branch)
 193                         case "$2" in '') usage ;; esac
 194                         branch=$2
 195                         shift
 196                         ;;
 197                 -f | --force)
 198                         force=$1
 199                         ;;
 200                 -q|--quiet)
 201                         GIT_QUIET=1
 202                         ;;
 203                 --reference)
 204                         case "$2" in '') usage ;; esac
 205                         reference="--reference=$2"
 206                         shift
 207                         ;;
 208                 --reference=*)
 209                         reference="$1"
 210                         shift
 211                         ;;
 212                 --)
 213                         shift
 214                         break
 215                         ;;
 216                 -*)
 217                         usage
 218                         ;;
 219                 *)
 220                         break
 221                         ;;
 222                 esac
 223                 shift
 224         done
 225
 226         repo=$1
 227         sm_path=$2
 228
 229         if test -z "$sm_path"; then
 230                 sm_path=$(echo "$repo" |
 231                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 232         fi
 233
 234         if test -z "$repo" -o -z "$sm_path"; then
 235                 usage
 236         fi
 237
 238         # assure repo is absolute or relative to parent
 239         case "$repo" in
 240         ./*|../*)
 241                 # dereference source url relative to parent's url
 242                 realrepo=$(resolve_relative_url "$repo") || exit
 243                 ;;
 244         *:*|/*)
 245                 # absolute url
 246                 realrepo=$repo
 247                 ;;
 248         *)
 249                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 250         ;;
 251         esac
 252
 253         # normalize path:
 254         # multiple //; leading ./; /./; /../; trailing /
 255         sm_path=$(printf '%s/\n' "$sm_path" |
 256                 sed -e '
 257                         s|//*|/|g
 258                         s|^\(\./\)*||
 259                         s|/\./|/|g
 260                         :start
 261                         s|\([^/]*\)/\.\./||
 262                         tstart
 263                         s|/*$||
 264                 ')
 265         git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 266         die "$(eval_gettext "'\$sm_path' already exists in the index")"
 267
 268         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 269         then
 270                 cat >&2 <<EOF
 271 The following path is ignored by one of your .gitignore files:
 272 $(eval_gettextln $smpath)
 273 Use -f if you really want to add it.
 274 EOF
 275                 exit 1
 276         fi
 277
 278         # perhaps the path exists and is already a git repo, else clone it
 279         if test -e "$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                 # Skip already registered paths
 402                 name=$(module_name "$sm_path") || exit
 403                 if test -z "$(git config "submodule.$name.url")"
 404                 then
 405                         url=$(git config -f .gitmodules submodule."$name".url)
 406                         test -z "$url" &&
 407                         die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"
 408
 409                         # Possibly a url relative to parent
 410                         case "$url" in
 411                         ./*|../*)
 412                                 url=$(resolve_relative_url "$url") || exit
 413                                 ;;
 414                         esac
 415                         git config submodule."$name".url "$url" ||
 416                         die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"
 417                 fi
 418
 419                 # Copy "update" setting when it is not set yet
 420                 upd="$(git config -f .gitmodules submodule."$name".update)"
 421                 test -z "$upd" ||
 422                 test -n "$(git config submodule."$name".update)" ||
 423                 git config submodule."$name".update "$upd" ||
 424                 die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
 425
 426                 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
 427         done
 428 }
 429
 430 #
 431 # Update each submodule path to correct revision, using clone and checkout as needed
 432 #
 433 # $@ = requested paths (default to all)
 434 #
 435 cmd_update()
 436 {
 437         # parse $args after "submodule ... update".
 438         orig_flags=
 439         while test $# -ne 0
 440         do
 441                 case "$1" in
 442                 -q|--quiet)
 443                         GIT_QUIET=1
 444                         ;;
 445                 -i|--init)
 446                         init=1
 447                         ;;
 448                 -N|--no-fetch)
 449                         nofetch=1
 450                         ;;
 451                 -f|--force)
 452                         force=$1
 453                         ;;
 454                 -r|--rebase)
 455                         update="rebase"
 456                         ;;
 457                 --reference)
 458                         case "$2" in '') usage ;; esac
 459                         reference="--reference=$2"
 460                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 461                         shift
 462                         ;;
 463                 --reference=*)
 464                         reference="$1"
 465                         ;;
 466                 -m|--merge)
 467                         update="merge"
 468                         ;;
 469                 --recursive)
 470                         recursive=1
 471                         ;;
 472                 --checkout)
 473                         update="checkout"
 474                         ;;
 475                 --)
 476                         shift
 477                         break
 478                         ;;
 479                 -*)
 480                         usage
 481                         ;;
 482                 *)
 483                         break
 484                         ;;
 485                 esac
 486                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 487                 shift
 488         done
 489
 490         if test -n "$init"
 491         then
 492                 cmd_init "--" "$@" || return
 493         fi
 494
 495         cloned_modules=
 496         module_list "$@" | {
 497         err=
 498         while read mode sha1 stage sm_path
 499         do
 500                 if test "$stage" = U
 501                 then
 502                         echo >&2 "Skipping unmerged submodule $sm_path"
 503                         continue
 504                 fi
 505                 name=$(module_name "$sm_path") || exit
 506                 url=$(git config submodule."$name".url)
 507                 if ! test -z "$update"
 508                 then
 509                         update_module=$update
 510                 else
 511                         update_module=$(git config submodule."$name".update)
 512                 fi
 513
 514                 if test "$update_module" = "none"
 515                 then
 516                         echo "Skipping submodule '$sm_path'"
 517                         continue
 518                 fi
 519
 520                 if test -z "$url"
 521                 then
 522                         # Only mention uninitialized submodules when its
 523                         # path have been specified
 524                         test "$#" != "0" &&
 525                         say "$(eval_gettext "Submodule path '\$sm_path' not initialized
 526 Maybe you want to use 'update --init'?")"
 527                         continue
 528                 fi
 529
 530                 if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 531                 then
 532                         module_clone "$sm_path" "$url" "$reference"|| exit
 533                         cloned_modules="$cloned_modules;$name"
 534                         subsha1=
 535                 else
 536                         subsha1=$(clear_local_git_env; cd "$sm_path" &&
 537                                 git rev-parse --verify HEAD) ||
 538                         die "$(eval_gettext "Unable to find current revision in submodule path '\$sm_path'")"
 539                 fi
 540
 541                 if test "$subsha1" != "$sha1"
 542                 then
 543                         subforce=$force
 544                         # If we don't already have a -f flag and the submodule has never been checked out
 545                         if test -z "$subsha1" -a -z "$force"
 546                         then
 547                                 subforce="-f"
 548                         fi
 549
 550                         if test -z "$nofetch"
 551                         then
 552                                 # Run fetch only if $sha1 isn't present or it
 553                                 # is not reachable from a ref.
 554                                 (clear_local_git_env; cd "$sm_path" &&
 555                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 556                                          test -z "$rev") || git-fetch)) ||
 557                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 558                         fi
 559
 560                         # Is this something we just cloned?
 561                         case ";$cloned_modules;" in
 562                         *";$name;"*)
 563                                 # then there is no local change to integrate
 564                                 update_module= ;;
 565                         esac
 566
 567                         must_die_on_failure=
 568                         case "$update_module" in
 569                         rebase)
 570                                 command="git rebase"
 571                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$sm_path'")"
 572                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': rebased into '\$sha1'")"
 573                                 must_die_on_failure=yes
 574                                 ;;
 575                         merge)
 576                                 command="git merge"
 577                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$sm_path'")"
 578                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': merged in '\$sha1'")"
 579                                 must_die_on_failure=yes
 580                                 ;;
 581                         *)
 582                                 command="git checkout $subforce -q"
 583                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$sm_path'")"
 584                                 say_msg="$(eval_gettext "Submodule path '\$sm_path': checked out '\$sha1'")"
 585                                 ;;
 586                         esac
 587
 588                         if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
 589                         then
 590                                 say "$say_msg"
 591                         elif test -n "$must_die_on_failure"
 592                         then
 593                                 die_with_status 2 "$die_msg"
 594                         else
 595                                 err="${err};$die_msg"
 596                                 continue
 597                         fi
 598                 fi
 599
 600                 if test -n "$recursive"
 601                 then
 602                         (clear_local_git_env; cd "$sm_path" && eval cmd_update "$orig_flags")
 603                         res=$?
 604                         if test $res -gt 0
 605                         then
 606                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 607                                 if test $res -eq 1
 608                                 then
 609                                         err="${err};$die_msg"
 610                                         continue
 611                                 else
 612                                         die_with_status $res "$die_msg"
 613                                 fi
 614                         fi
 615                 fi
 616         done
 617
 618         if test -n "$err"
 619         then
 620                 OIFS=$IFS
 621                 IFS=';'
 622                 for e in $err
 623                 do
 624                         if test -n "$e"
 625                         then
 626                                 echo >&2 "$e"
 627                         fi
 628                 done
 629                 IFS=$OIFS
 630                 exit 1
 631         fi
 632         }
 633 }
 634
 635 set_name_rev () {
 636         revname=$( (
 637                 clear_local_git_env
 638                 cd "$1" && {
 639                         git describe "$2" 2>/dev/null ||
 640                         git describe --tags "$2" 2>/dev/null ||
 641                         git describe --contains "$2" 2>/dev/null ||
 642                         git describe --all --always "$2"
 643                 }
 644         ) )
 645         test -z "$revname" || revname=" ($revname)"
 646 }
 647 #
 648 # Show commit summary for submodules in index or working tree
 649 #
 650 # If '--cached' is given, show summary between index and given commit,
 651 # or between working tree and given commit
 652 #
 653 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 654 #
 655 cmd_summary() {
 656         summary_limit=-1
 657         for_status=
 658         diff_cmd=diff-index
 659
 660         # parse $args after "submodule ... summary".
 661         while test $# -ne 0
 662         do
 663                 case "$1" in
 664                 --cached)
 665                         cached="$1"
 666                         ;;
 667                 --files)
 668                         files="$1"
 669                         ;;
 670                 --for-status)
 671                         for_status="$1"
 672                         ;;
 673                 -n|--summary-limit)
 674                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 675                         then
 676                                 :
 677                         else
 678                                 usage
 679                         fi
 680                         shift
 681                         ;;
 682                 --)
 683                         shift
 684                         break
 685                         ;;
 686                 -*)
 687                         usage
 688                         ;;
 689                 *)
 690                         break
 691                         ;;
 692                 esac
 693                 shift
 694         done
 695
 696         test $summary_limit = 0 && return
 697
 698         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 699         then
 700                 head=$rev
 701                 test $# = 0 || shift
 702         elif test -z "$1" -o "$1" = "HEAD"
 703         then
 704                 # before the first commit: compare with an empty tree
 705                 head=$(git hash-object -w -t tree --stdin </dev/null)
 706                 test -z "$1" || shift
 707         else
 708                 head="HEAD"
 709         fi
 710
 711         if [ -n "$files" ]
 712         then
 713                 test -n "$cached" &&
 714                 die "$(gettext -- "--cached cannot be used with --files")"
 715                 diff_cmd=diff-files
 716                 head=
 717         fi
 718
 719         cd_to_toplevel
 720         # Get modified modules cared by user
 721         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 722                 sane_egrep '^:([0-7]* )?160000' |
 723                 while read mod_src mod_dst sha1_src sha1_dst status name
 724                 do
 725                         # Always show modules deleted or type-changed (blob<->module)
 726                         test $status = D -o $status = T && echo "$name" && continue
 727                         # Also show added or modified modules which are checked out
 728                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 729                         echo "$name"
 730                 done
 731         )
 732
 733         test -z "$modules" && return
 734
 735         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 736         sane_egrep '^:([0-7]* )?160000' |
 737         cut -c2- |
 738         while read mod_src mod_dst sha1_src sha1_dst status name
 739         do
 740                 if test -z "$cached" &&
 741                         test $sha1_dst = 0000000000000000000000000000000000000000
 742                 then
 743                         case "$mod_dst" in
 744                         160000)
 745                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 746                                 ;;
 747                         100644 | 100755 | 120000)
 748                                 sha1_dst=$(git hash-object $name)
 749                                 ;;
 750                         000000)
 751                                 ;; # removed
 752                         *)
 753                                 # unexpected type
 754                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 755                                 continue ;;
 756                         esac
 757                 fi
 758                 missing_src=
 759                 missing_dst=
 760
 761                 test $mod_src = 160000 &&
 762                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 763                 missing_src=t
 764
 765                 test $mod_dst = 160000 &&
 766                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 767                 missing_dst=t
 768
 769                 total_commits=
 770                 case "$missing_src,$missing_dst" in
 771                 t,)
 772                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 773                         ;;
 774                 ,t)
 775                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 776                         ;;
 777                 t,t)
 778                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 779                         ;;
 780                 *)
 781                         errmsg=
 782                         total_commits=$(
 783                         if test $mod_src = 160000 -a $mod_dst = 160000
 784                         then
 785                                 range="$sha1_src...$sha1_dst"
 786                         elif test $mod_src = 160000
 787                         then
 788                                 range=$sha1_src
 789                         else
 790                                 range=$sha1_dst
 791                         fi
 792                         GIT_DIR="$name/.git" \
 793                         git rev-list --first-parent $range -- | wc -l
 794                         )
 795                         total_commits=" ($(($total_commits + 0)))"
 796                         ;;
 797                 esac
 798
 799                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 800                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 801                 if test $status = T
 802                 then
 803                         blob="$(gettext "blob")"
 804                         submodule="$(gettext "submodule")"
 805                         if test $mod_dst = 160000
 806                         then
 807                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 808                         else
 809                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 810                         fi
 811                 else
 812                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 813                 fi
 814                 if test -n "$errmsg"
 815                 then
 816                         # Don't give error msg for modification whose dst is not submodule
 817                         # i.e. deleted or changed to blob
 818                         test $mod_dst = 160000 && echo "$errmsg"
 819                 else
 820                         if test $mod_src = 160000 -a $mod_dst = 160000
 821                         then
 822                                 limit=
 823                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 824                                 GIT_DIR="$name/.git" \
 825                                 git log $limit --pretty='format:  %m %s' \
 826                                 --first-parent $sha1_src...$sha1_dst
 827                         elif test $mod_dst = 160000
 828                         then
 829                                 GIT_DIR="$name/.git" \
 830                                 git log --pretty='format:  > %s' -1 $sha1_dst
 831                         else
 832                                 GIT_DIR="$name/.git" \
 833                                 git log --pretty='format:  < %s' -1 $sha1_src
 834                         fi
 835                         echo
 836                 fi
 837                 echo
 838         done |
 839         if test -n "$for_status"; then
 840                 if [ -n "$files" ]; then
 841                         status_msg="$(gettextln "# Submodules changed but not updated:")"
 842                 else
 843                         status_msg="$(gettextln "# Submodule changes to be committed:")"
 844                 fi
 845                 status_sed=$(sed -e 's|^|# |' -e 's|^# $|#|')
 846                 cat <<EOF
 847 $status_msg
 848 #
 849 $status_sed
 850 EOF
 851         else
 852                 cat
 853         fi
 854 }
 855 #
 856 # List all submodules, prefixed with:
 857 #  - submodule not initialized
 858 #  + different revision checked out
 859 #
 860 # If --cached was specified the revision in the index will be printed
 861 # instead of the currently checked out revision.
 862 #
 863 # $@ = requested paths (default to all)
 864 #
 865 cmd_status()
 866 {
 867         # parse $args after "submodule ... status".
 868         orig_flags=
 869         while test $# -ne 0
 870         do
 871                 case "$1" in
 872                 -q|--quiet)
 873                         GIT_QUIET=1
 874                         ;;
 875                 --cached)
 876                         cached=1
 877                         ;;
 878                 --recursive)
 879                         recursive=1
 880                         ;;
 881                 --)
 882                         shift
 883                         break
 884                         ;;
 885                 -*)
 886                         usage
 887                         ;;
 888                 *)
 889                         break
 890                         ;;
 891                 esac
 892                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 893                 shift
 894         done
 895
 896         module_list "$@" |
 897         while read mode sha1 stage sm_path
 898         do
 899                 name=$(module_name "$sm_path") || exit
 900                 url=$(git config submodule."$name".url)
 901                 displaypath="$prefix$sm_path"
 902                 if test "$stage" = U
 903                 then
 904                         say "U$sha1 $displaypath"
 905                         continue
 906                 fi
 907                 if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 908                 then
 909                         say "-$sha1 $displaypath"
 910                         continue;
 911                 fi
 912                 set_name_rev "$sm_path" "$sha1"
 913                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
 914                 then
 915                         say " $sha1 $displaypath$revname"
 916                 else
 917                         if test -z "$cached"
 918                         then
 919                                 sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
 920                                 set_name_rev "$sm_path" "$sha1"
 921                         fi
 922                         say "+$sha1 $displaypath$revname"
 923                 fi
 924
 925                 if test -n "$recursive"
 926                 then
 927                         (
 928                                 prefix="$displaypath/"
 929                                 clear_local_git_env
 930                                 cd "$sm_path" &&
 931                                 eval cmd_status "$orig_args"
 932                         ) ||
 933                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 934                 fi
 935         done
 936 }
 937 #
 938 # Sync remote urls for submodules
 939 # This makes the value for remote.$remote.url match the value
 940 # specified in .gitmodules.
 941 #
 942 cmd_sync()
 943 {
 944         while test $# -ne 0
 945         do
 946                 case "$1" in
 947                 -q|--quiet)
 948                         GIT_QUIET=1
 949                         shift
 950                         ;;
 951                 --)
 952                         shift
 953                         break
 954                         ;;
 955                 -*)
 956                         usage
 957                         ;;
 958                 *)
 959                         break
 960                         ;;
 961                 esac
 962         done
 963         cd_to_toplevel
 964         module_list "$@" |
 965         while read mode sha1 stage sm_path
 966         do
 967                 name=$(module_name "$sm_path")
 968                 url=$(git config -f .gitmodules --get submodule."$name".url)
 969
 970                 # Possibly a url relative to parent
 971                 case "$url" in
 972                 ./*|../*)
 973                         url=$(resolve_relative_url "$url") || exit
 974                         ;;
 975                 esac
 976
 977                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
 978                 then
 979                         say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 980                         git config submodule."$name".url "$url"
 981
 982                         if test -e "$sm_path"/.git
 983                         then
 984                         (
 985                                 clear_local_git_env
 986                                 cd "$sm_path"
 987                                 remote=$(get_default_remote)
 988                                 git config remote."$remote".url "$url"
 989                         )
 990                         fi
 991                 fi
 992         done
 993 }
 994
 995 # This loop parses the command line arguments to find the
 996 # subcommand name to dispatch.  Parsing of the subcommand specific
 997 # options are primarily done by the subcommand implementations.
 998 # Subcommand specific options such as --branch and --cached are
 999 # parsed here as well, for backward compatibility.
1000
1001 while test $# != 0 && test -z "$command"
1002 do
1003         case "$1" in
1004         add | foreach | init | update | status | summary | sync)
1005                 command=$1
1006                 ;;
1007         -q|--quiet)
1008                 GIT_QUIET=1
1009                 ;;
1010         -b|--branch)
1011                 case "$2" in
1012                 '')
1013                         usage
1014                         ;;
1015                 esac
1016                 branch="$2"; shift
1017                 ;;
1018         --cached)
1019                 cached="$1"
1020                 ;;
1021         --)
1022                 break
1023                 ;;
1024         -*)
1025                 usage
1026                 ;;
1027         *)
1028                 break
1029                 ;;
1030         esac
1031         shift
1032 done
1033
1034 # No command word defaults to "status"
1035 test -n "$command" || command=status
1036
1037 # "-b branch" is accepted only by "add"
1038 if test -n "$branch" && test "$command" != add
1039 then
1040         usage
1041 fi
1042
1043 # "--cached" is accepted only by "status" and "summary"
1044 if test -n "$cached" && test "$command" != status -a "$command" != summary
1045 then
1046         usage
1047 fi
1048
1049 "cmd_$command" "$@"