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 = $1" defined in .gitmodules file?
 104         re=$(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="$3"
 125         quiet=
 126         if test -n "$GIT_QUIET"
 127         then
 128                 quiet=-q
 129         fi
 130
 131         gitdir=
 132         gitdir_base=
 133         name=$(module_name "$path" 2>/dev/null)
 134         test -n "$name" || name="$path"
 135         base_path=$(dirname "$path")
 136
 137         gitdir=$(git rev-parse --git-dir)
 138         gitdir_base="$gitdir/modules/$base_path"
 139         gitdir="$gitdir/modules/$path"
 140
 141         case $gitdir in
 142         /*)
 143                 a="$(cd_to_toplevel && pwd)/"
 144                 b=$gitdir
 145                 while [ "$b" ] && [ "${a%%/*}" = "${b%%/*}" ]
 146                 do
 147                         a=${a#*/} b=${b#*/};
 148                 done
 149
 150                 rel="$a$name"
 151                 rel=`echo $rel | sed -e 's|[^/]*|..|g'`
 152                 rel_gitdir="$rel/$b"
 153                 ;;
 154         *)
 155                 rel=`echo $name | sed -e 's|[^/]*|..|g'`
 156                 rel_gitdir="$rel/$gitdir"
 157                 ;;
 158         esac
 159
 160         if test -d "$gitdir"
 161         then
 162                 mkdir -p "$path"
 163                 rm -f "$gitdir/index"
 164         else
 165                 mkdir -p "$gitdir_base"
 166                 git clone $quiet -n ${reference:+"$reference"} \
 167                         --separate-git-dir "$gitdir" "$url" "$path" ||
 168                 die "$(eval_gettext "Clone of '\$url' into submodule path '\$path' failed")"
 169         fi
 170
 171         echo "gitdir: $rel_gitdir" >"$path/.git"
 172
 173         a=$(cd "$gitdir" && pwd)/
 174         b=$(cd "$path" && pwd)/
 175         # Remove all common leading directories after a sanity check
 176         if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
 177                 die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
 178         fi
 179         while test "${a%%/*}" = "${b%%/*}"
 180         do
 181                 a=${a#*/}
 182                 b=${b#*/}
 183         done
 184         # Now chop off the trailing '/'s that were added in the beginning
 185         a=${a%/}
 186         b=${b%/}
 187
 188         rel=$(echo $a | sed -e 's|[^/]*|..|g')
 189         (clear_local_git_env; cd "$path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 190 }
 191
 192 #
 193 # Add a new submodule to the working tree, .gitmodules and the index
 194 #
 195 # $@ = repo path
 196 #
 197 # optional branch is stored in global branch variable
 198 #
 199 cmd_add()
 200 {
 201         # parse $args after "submodule ... add".
 202         while test $# -ne 0
 203         do
 204                 case "$1" in
 205                 -b | --branch)
 206                         case "$2" in '') usage ;; esac
 207                         branch=$2
 208                         shift
 209                         ;;
 210                 -f | --force)
 211                         force=$1
 212                         ;;
 213                 -q|--quiet)
 214                         GIT_QUIET=1
 215                         ;;
 216                 --reference)
 217                         case "$2" in '') usage ;; esac
 218                         reference="--reference=$2"
 219                         shift
 220                         ;;
 221                 --reference=*)
 222                         reference="$1"
 223                         shift
 224                         ;;
 225                 --)
 226                         shift
 227                         break
 228                         ;;
 229                 -*)
 230                         usage
 231                         ;;
 232                 *)
 233                         break
 234                         ;;
 235                 esac
 236                 shift
 237         done
 238
 239         repo=$1
 240         path=$2
 241
 242         if test -z "$path"; then
 243                 path=$(echo "$repo" |
 244                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 245         fi
 246
 247         if test -z "$repo" -o -z "$path"; then
 248                 usage
 249         fi
 250
 251         # assure repo is absolute or relative to parent
 252         case "$repo" in
 253         ./*|../*)
 254                 # dereference source url relative to parent's url
 255                 realrepo=$(resolve_relative_url "$repo") || exit
 256                 ;;
 257         *:*|/*)
 258                 # absolute url
 259                 realrepo=$repo
 260                 ;;
 261         *)
 262                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 263         ;;
 264         esac
 265
 266         # normalize path:
 267         # multiple //; leading ./; /./; /../; trailing /
 268         path=$(printf '%s/\n' "$path" |
 269                 sed -e '
 270                         s|//*|/|g
 271                         s|^\(\./\)*||
 272                         s|/\./|/|g
 273                         :start
 274                         s|\([^/]*\)/\.\./||
 275                         tstart
 276                         s|/*$||
 277                 ')
 278         git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
 279         die "$(eval_gettext "'\$path' already exists in the index")"
 280
 281         if test -z "$force" && ! git add --dry-run --ignore-missing "$path" > /dev/null 2>&1
 282         then
 283                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 284 \$path
 285 Use -f if you really want to add it." >&2
 286                 exit 1
 287         fi
 288
 289         # perhaps the path exists and is already a git repo, else clone it
 290         if test -e "$path"
 291         then
 292                 if test -d "$path"/.git -o -f "$path"/.git
 293                 then
 294                         eval_gettextln "Adding existing repo at '\$path' to the index"
 295                 else
 296                         die "$(eval_gettext "'\$path' already exists and is not a valid git repo")"
 297                 fi
 298
 299         else
 300
 301                 module_clone "$path" "$realrepo" "$reference" || exit
 302                 (
 303                         clear_local_git_env
 304                         cd "$path" &&
 305                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 306                         case "$branch" in
 307                         '') git checkout -f -q ;;
 308                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 309                         esac
 310                 ) || die "$(eval_gettext "Unable to checkout submodule '\$path'")"
 311         fi
 312         git config submodule."$path".url "$realrepo"
 313
 314         git add $force "$path" ||
 315         die "$(eval_gettext "Failed to add submodule '\$path'")"
 316
 317         git config -f .gitmodules submodule."$path".path "$path" &&
 318         git config -f .gitmodules submodule."$path".url "$repo" &&
 319         git add --force .gitmodules ||
 320         die "$(eval_gettext "Failed to register submodule '\$path'")"
 321 }
 322
 323 #
 324 # Execute an arbitrary command sequence in each checked out
 325 # submodule
 326 #
 327 # $@ = command to execute
 328 #
 329 cmd_foreach()
 330 {
 331         # parse $args after "submodule ... foreach".
 332         while test $# -ne 0
 333         do
 334                 case "$1" in
 335                 -q|--quiet)
 336                         GIT_QUIET=1
 337                         ;;
 338                 --recursive)
 339                         recursive=1
 340                         ;;
 341                 -*)
 342                         usage
 343                         ;;
 344                 *)
 345                         break
 346                         ;;
 347                 esac
 348                 shift
 349         done
 350
 351         toplevel=$(pwd)
 352
 353         # dup stdin so that it can be restored when running the external
 354         # command in the subshell (and a recursive call to this function)
 355         exec 3<&0
 356
 357         module_list |
 358         while read mode sha1 stage path
 359         do
 360                 if test -e "$path"/.git
 361                 then
 362                         say "$(eval_gettext "Entering '\$prefix\$path'")"
 363                         name=$(module_name "$path")
 364                         (
 365                                 prefix="$prefix$path/"
 366                                 clear_local_git_env
 367                                 cd "$path" &&
 368                                 eval "$@" &&
 369                                 if test -n "$recursive"
 370                                 then
 371                                         cmd_foreach "--recursive" "$@"
 372                                 fi
 373                         ) <&3 3<&- ||
 374                         die "$(eval_gettext "Stopping at '\$path'; script returned non-zero status.")"
 375                 fi
 376         done
 377 }
 378
 379 #
 380 # Register submodules in .git/config
 381 #
 382 # $@ = requested paths (default to all)
 383 #
 384 cmd_init()
 385 {
 386         # parse $args after "submodule ... init".
 387         while test $# -ne 0
 388         do
 389                 case "$1" in
 390                 -q|--quiet)
 391                         GIT_QUIET=1
 392                         ;;
 393                 --)
 394                         shift
 395                         break
 396                         ;;
 397                 -*)
 398                         usage
 399                         ;;
 400                 *)
 401                         break
 402                         ;;
 403                 esac
 404                 shift
 405         done
 406
 407         module_list "$@" |
 408         while read mode sha1 stage path
 409         do
 410                 # Skip already registered paths
 411                 name=$(module_name "$path") || exit
 412                 if test -z "$(git config "submodule.$name.url")"
 413                 then
 414                         url=$(git config -f .gitmodules submodule."$name".url)
 415                         test -z "$url" &&
 416                         die "$(eval_gettext "No url found for submodule path '\$path' in .gitmodules")"
 417
 418                         # Possibly a url relative to parent
 419                         case "$url" in
 420                         ./*|../*)
 421                                 url=$(resolve_relative_url "$url") || exit
 422                                 ;;
 423                         esac
 424                         git config submodule."$name".url "$url" ||
 425                         die "$(eval_gettext "Failed to register url for submodule path '\$path'")"
 426                 fi
 427
 428                 # Copy "update" setting when it is not set yet
 429                 upd="$(git config -f .gitmodules submodule."$name".update)"
 430                 test -z "$upd" ||
 431                 test -n "$(git config submodule."$name".update)" ||
 432                 git config submodule."$name".update "$upd" ||
 433                 die "$(eval_gettext "Failed to register update mode for submodule path '\$path'")"
 434
 435                 say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$path'")"
 436         done
 437 }
 438
 439 #
 440 # Update each submodule path to correct revision, using clone and checkout as needed
 441 #
 442 # $@ = requested paths (default to all)
 443 #
 444 cmd_update()
 445 {
 446         # parse $args after "submodule ... update".
 447         orig_flags=
 448         while test $# -ne 0
 449         do
 450                 case "$1" in
 451                 -q|--quiet)
 452                         GIT_QUIET=1
 453                         ;;
 454                 -i|--init)
 455                         init=1
 456                         ;;
 457                 -N|--no-fetch)
 458                         nofetch=1
 459                         ;;
 460                 -f|--force)
 461                         force=$1
 462                         ;;
 463                 -r|--rebase)
 464                         update="rebase"
 465                         ;;
 466                 --reference)
 467                         case "$2" in '') usage ;; esac
 468                         reference="--reference=$2"
 469                         orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 470                         shift
 471                         ;;
 472                 --reference=*)
 473                         reference="$1"
 474                         ;;
 475                 -m|--merge)
 476                         update="merge"
 477                         ;;
 478                 --recursive)
 479                         recursive=1
 480                         ;;
 481                 --checkout)
 482                         update="checkout"
 483                         ;;
 484                 --)
 485                         shift
 486                         break
 487                         ;;
 488                 -*)
 489                         usage
 490                         ;;
 491                 *)
 492                         break
 493                         ;;
 494                 esac
 495                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 496                 shift
 497         done
 498
 499         if test -n "$init"
 500         then
 501                 cmd_init "--" "$@" || return
 502         fi
 503
 504         cloned_modules=
 505         module_list "$@" | {
 506         err=
 507         while read mode sha1 stage path
 508         do
 509                 if test "$stage" = U
 510                 then
 511                         echo >&2 "Skipping unmerged submodule $path"
 512                         continue
 513                 fi
 514                 name=$(module_name "$path") || exit
 515                 url=$(git config submodule."$name".url)
 516                 if ! test -z "$update"
 517                 then
 518                         update_module=$update
 519                 else
 520                         update_module=$(git config submodule."$name".update)
 521                 fi
 522
 523                 if test "$update_module" = "none"
 524                 then
 525                         echo "Skipping submodule '$path'"
 526                         continue
 527                 fi
 528
 529                 if test -z "$url"
 530                 then
 531                         # Only mention uninitialized submodules when its
 532                         # path have been specified
 533                         test "$#" != "0" &&
 534                         say "$(eval_gettext "Submodule path '\$path' not initialized
 535 Maybe you want to use 'update --init'?")"
 536                         continue
 537                 fi
 538
 539                 if ! test -d "$path"/.git -o -f "$path"/.git
 540                 then
 541                         module_clone "$path" "$url" "$reference"|| exit
 542                         cloned_modules="$cloned_modules;$name"
 543                         subsha1=
 544                 else
 545                         subsha1=$(clear_local_git_env; cd "$path" &&
 546                                 git rev-parse --verify HEAD) ||
 547                         die "$(eval_gettext "Unable to find current revision in submodule path '\$path'")"
 548                 fi
 549
 550                 if test "$subsha1" != "$sha1"
 551                 then
 552                         subforce=$force
 553                         # If we don't already have a -f flag and the submodule has never been checked out
 554                         if test -z "$subsha1" -a -z "$force"
 555                         then
 556                                 subforce="-f"
 557                         fi
 558
 559                         if test -z "$nofetch"
 560                         then
 561                                 # Run fetch only if $sha1 isn't present or it
 562                                 # is not reachable from a ref.
 563                                 (clear_local_git_env; cd "$path" &&
 564                                         ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 565                                          test -z "$rev") || git-fetch)) ||
 566                                 die "$(eval_gettext "Unable to fetch in submodule path '\$path'")"
 567                         fi
 568
 569                         # Is this something we just cloned?
 570                         case ";$cloned_modules;" in
 571                         *";$name;"*)
 572                                 # then there is no local change to integrate
 573                                 update_module= ;;
 574                         esac
 575
 576                         must_die_on_failure=
 577                         case "$update_module" in
 578                         rebase)
 579                                 command="git rebase"
 580                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$path'")"
 581                                 say_msg="$(eval_gettext "Submodule path '\$path': rebased into '\$sha1'")"
 582                                 must_die_on_failure=yes
 583                                 ;;
 584                         merge)
 585                                 command="git merge"
 586                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$path'")"
 587                                 say_msg="$(eval_gettext "Submodule path '\$path': merged in '\$sha1'")"
 588                                 must_die_on_failure=yes
 589                                 ;;
 590                         *)
 591                                 command="git checkout $subforce -q"
 592                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$path'")"
 593                                 say_msg="$(eval_gettext "Submodule path '\$path': checked out '\$sha1'")"
 594                                 ;;
 595                         esac
 596
 597                         if (clear_local_git_env; cd "$path" && $command "$sha1")
 598                         then
 599                                 say "$say_msg"
 600                         elif test -n "$must_die_on_failure"
 601                         then
 602                                 die_with_status 2 "$die_msg"
 603                         else
 604                                 err="${err};$die_msg"
 605                                 continue
 606                         fi
 607                 fi
 608
 609                 if test -n "$recursive"
 610                 then
 611                         (clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags")
 612                         res=$?
 613                         if test $res -gt 0
 614                         then
 615                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 616                                 if test $res -eq 1
 617                                 then
 618                                         err="${err};$die_msg"
 619                                         continue
 620                                 else
 621                                         die_with_status $res "$die_msg"
 622                                 fi
 623                         fi
 624                 fi
 625         done
 626
 627         if test -n "$err"
 628         then
 629                 OIFS=$IFS
 630                 IFS=';'
 631                 for e in $err
 632                 do
 633                         if test -n "$e"
 634                         then
 635                                 echo >&2 "$e"
 636                         fi
 637                 done
 638                 IFS=$OIFS
 639                 exit 1
 640         fi
 641         }
 642 }
 643
 644 set_name_rev () {
 645         revname=$( (
 646                 clear_local_git_env
 647                 cd "$1" && {
 648                         git describe "$2" 2>/dev/null ||
 649                         git describe --tags "$2" 2>/dev/null ||
 650                         git describe --contains "$2" 2>/dev/null ||
 651                         git describe --all --always "$2"
 652                 }
 653         ) )
 654         test -z "$revname" || revname=" ($revname)"
 655 }
 656 #
 657 # Show commit summary for submodules in index or working tree
 658 #
 659 # If '--cached' is given, show summary between index and given commit,
 660 # or between working tree and given commit
 661 #
 662 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 663 #
 664 cmd_summary() {
 665         summary_limit=-1
 666         for_status=
 667         diff_cmd=diff-index
 668
 669         # parse $args after "submodule ... summary".
 670         while test $# -ne 0
 671         do
 672                 case "$1" in
 673                 --cached)
 674                         cached="$1"
 675                         ;;
 676                 --files)
 677                         files="$1"
 678                         ;;
 679                 --for-status)
 680                         for_status="$1"
 681                         ;;
 682                 -n|--summary-limit)
 683                         if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 684                         then
 685                                 :
 686                         else
 687                                 usage
 688                         fi
 689                         shift
 690                         ;;
 691                 --)
 692                         shift
 693                         break
 694                         ;;
 695                 -*)
 696                         usage
 697                         ;;
 698                 *)
 699                         break
 700                         ;;
 701                 esac
 702                 shift
 703         done
 704
 705         test $summary_limit = 0 && return
 706
 707         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 708         then
 709                 head=$rev
 710                 test $# = 0 || shift
 711         elif test -z "$1" -o "$1" = "HEAD"
 712         then
 713                 # before the first commit: compare with an empty tree
 714                 head=$(git hash-object -w -t tree --stdin </dev/null)
 715                 test -z "$1" || shift
 716         else
 717                 head="HEAD"
 718         fi
 719
 720         if [ -n "$files" ]
 721         then
 722                 test -n "$cached" &&
 723                 die "$(gettext -- "--cached cannot be used with --files")"
 724                 diff_cmd=diff-files
 725                 head=
 726         fi
 727
 728         cd_to_toplevel
 729         # Get modified modules cared by user
 730         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 731                 sane_egrep '^:([0-7]* )?160000' |
 732                 while read mod_src mod_dst sha1_src sha1_dst status name
 733                 do
 734                         # Always show modules deleted or type-changed (blob<->module)
 735                         test $status = D -o $status = T && echo "$name" && continue
 736                         # Also show added or modified modules which are checked out
 737                         GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 738                         echo "$name"
 739                 done
 740         )
 741
 742         test -z "$modules" && return
 743
 744         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 745         sane_egrep '^:([0-7]* )?160000' |
 746         cut -c2- |
 747         while read mod_src mod_dst sha1_src sha1_dst status name
 748         do
 749                 if test -z "$cached" &&
 750                         test $sha1_dst = 0000000000000000000000000000000000000000
 751                 then
 752                         case "$mod_dst" in
 753                         160000)
 754                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 755                                 ;;
 756                         100644 | 100755 | 120000)
 757                                 sha1_dst=$(git hash-object $name)
 758                                 ;;
 759                         000000)
 760                                 ;; # removed
 761                         *)
 762                                 # unexpected type
 763                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 764                                 continue ;;
 765                         esac
 766                 fi
 767                 missing_src=
 768                 missing_dst=
 769
 770                 test $mod_src = 160000 &&
 771                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 772                 missing_src=t
 773
 774                 test $mod_dst = 160000 &&
 775                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 776                 missing_dst=t
 777
 778                 total_commits=
 779                 case "$missing_src,$missing_dst" in
 780                 t,)
 781                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 782                         ;;
 783                 ,t)
 784                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 785                         ;;
 786                 t,t)
 787                         errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 788                         ;;
 789                 *)
 790                         errmsg=
 791                         total_commits=$(
 792                         if test $mod_src = 160000 -a $mod_dst = 160000
 793                         then
 794                                 range="$sha1_src...$sha1_dst"
 795                         elif test $mod_src = 160000
 796                         then
 797                                 range=$sha1_src
 798                         else
 799                                 range=$sha1_dst
 800                         fi
 801                         GIT_DIR="$name/.git" \
 802                         git rev-list --first-parent $range -- | wc -l
 803                         )
 804                         total_commits=" ($(($total_commits + 0)))"
 805                         ;;
 806                 esac
 807
 808                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 809                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 810                 if test $status = T
 811                 then
 812                         blob="$(gettext "blob")"
 813                         submodule="$(gettext "submodule")"
 814                         if test $mod_dst = 160000
 815                         then
 816                                 echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 817                         else
 818                                 echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 819                         fi
 820                 else
 821                         echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 822                 fi
 823                 if test -n "$errmsg"
 824                 then
 825                         # Don't give error msg for modification whose dst is not submodule
 826                         # i.e. deleted or changed to blob
 827                         test $mod_dst = 160000 && echo "$errmsg"
 828                 else
 829                         if test $mod_src = 160000 -a $mod_dst = 160000
 830                         then
 831                                 limit=
 832                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 833                                 GIT_DIR="$name/.git" \
 834                                 git log $limit --pretty='format:  %m %s' \
 835                                 --first-parent $sha1_src...$sha1_dst
 836                         elif test $mod_dst = 160000
 837                         then
 838                                 GIT_DIR="$name/.git" \
 839                                 git log --pretty='format:  > %s' -1 $sha1_dst
 840                         else
 841                                 GIT_DIR="$name/.git" \
 842                                 git log --pretty='format:  < %s' -1 $sha1_src
 843                         fi
 844                         echo
 845                 fi
 846                 echo
 847         done |
 848         if test -n "$for_status"; then
 849                 if [ -n "$files" ]; then
 850                         gettextln "# Submodules changed but not updated:"
 851                 else
 852                         gettextln "# Submodule changes to be committed:"
 853                 fi
 854                 echo "#"
 855                 sed -e 's|^|# |' -e 's|^# $|#|'
 856         else
 857                 cat
 858         fi
 859 }
 860 #
 861 # List all submodules, prefixed with:
 862 #  - submodule not initialized
 863 #  + different revision checked out
 864 #
 865 # If --cached was specified the revision in the index will be printed
 866 # instead of the currently checked out revision.
 867 #
 868 # $@ = requested paths (default to all)
 869 #
 870 cmd_status()
 871 {
 872         # parse $args after "submodule ... status".
 873         orig_flags=
 874         while test $# -ne 0
 875         do
 876                 case "$1" in
 877                 -q|--quiet)
 878                         GIT_QUIET=1
 879                         ;;
 880                 --cached)
 881                         cached=1
 882                         ;;
 883                 --recursive)
 884                         recursive=1
 885                         ;;
 886                 --)
 887                         shift
 888                         break
 889                         ;;
 890                 -*)
 891                         usage
 892                         ;;
 893                 *)
 894                         break
 895                         ;;
 896                 esac
 897                 orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 898                 shift
 899         done
 900
 901         module_list "$@" |
 902         while read mode sha1 stage path
 903         do
 904                 name=$(module_name "$path") || exit
 905                 url=$(git config submodule."$name".url)
 906                 displaypath="$prefix$path"
 907                 if test "$stage" = U
 908                 then
 909                         say "U$sha1 $displaypath"
 910                         continue
 911                 fi
 912                 if test -z "$url" || ! test -d "$path"/.git -o -f "$path"/.git
 913                 then
 914                         say "-$sha1 $displaypath"
 915                         continue;
 916                 fi
 917                 set_name_rev "$path" "$sha1"
 918                 if git diff-files --ignore-submodules=dirty --quiet -- "$path"
 919                 then
 920                         say " $sha1 $displaypath$revname"
 921                 else
 922                         if test -z "$cached"
 923                         then
 924                                 sha1=$(clear_local_git_env; cd "$path" && git rev-parse --verify HEAD)
 925                                 set_name_rev "$path" "$sha1"
 926                         fi
 927                         say "+$sha1 $displaypath$revname"
 928                 fi
 929
 930                 if test -n "$recursive"
 931                 then
 932                         (
 933                                 prefix="$displaypath/"
 934                                 clear_local_git_env
 935                                 cd "$path" &&
 936                                 eval cmd_status "$orig_args"
 937                         ) ||
 938                         die "$(eval_gettext "Failed to recurse into submodule path '\$path'")"
 939                 fi
 940         done
 941 }
 942 #
 943 # Sync remote urls for submodules
 944 # This makes the value for remote.$remote.url match the value
 945 # specified in .gitmodules.
 946 #
 947 cmd_sync()
 948 {
 949         while test $# -ne 0
 950         do
 951                 case "$1" in
 952                 -q|--quiet)
 953                         GIT_QUIET=1
 954                         shift
 955                         ;;
 956                 --)
 957                         shift
 958                         break
 959                         ;;
 960                 -*)
 961                         usage
 962                         ;;
 963                 *)
 964                         break
 965                         ;;
 966                 esac
 967         done
 968         cd_to_toplevel
 969         module_list "$@" |
 970         while read mode sha1 stage path
 971         do
 972                 name=$(module_name "$path")
 973                 url=$(git config -f .gitmodules --get submodule."$name".url)
 974
 975                 # Possibly a url relative to parent
 976                 case "$url" in
 977                 ./*|../*)
 978                         url=$(resolve_relative_url "$url") || exit
 979                         ;;
 980                 esac
 981
 982                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
 983                 then
 984                         say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 985                         git config submodule."$name".url "$url"
 986
 987                         if test -e "$path"/.git
 988                         then
 989                         (
 990                                 clear_local_git_env
 991                                 cd "$path"
 992                                 remote=$(get_default_remote)
 993                                 git config remote."$remote".url "$url"
 994                         )
 995                         fi
 996                 fi
 997         done
 998 }
 999
1000 # This loop parses the command line arguments to find the
1001 # subcommand name to dispatch.  Parsing of the subcommand specific
1002 # options are primarily done by the subcommand implementations.
1003 # Subcommand specific options such as --branch and --cached are
1004 # parsed here as well, for backward compatibility.
1005
1006 while test $# != 0 && test -z "$command"
1007 do
1008         case "$1" in
1009         add | foreach | init | update | status | summary | sync)
1010                 command=$1
1011                 ;;
1012         -q|--quiet)
1013                 GIT_QUIET=1
1014                 ;;
1015         -b|--branch)
1016                 case "$2" in
1017                 '')
1018                         usage
1019                         ;;
1020                 esac
1021                 branch="$2"; shift
1022                 ;;
1023         --cached)
1024                 cached="$1"
1025                 ;;
1026         --)
1027                 break
1028                 ;;
1029         -*)
1030                 usage
1031                 ;;
1032         *)
1033                 break
1034                 ;;
1035         esac
1036         shift
1037 done
1038
1039 # No command word defaults to "status"
1040 test -n "$command" || command=status
1041
1042 # "-b branch" is accepted only by "add"
1043 if test -n "$branch" && test "$command" != add
1044 then
1045         usage
1046 fi
1047
1048 # "--cached" is accepted only by "status" and "summary"
1049 if test -n "$cached" && test "$command" != status -a "$command" != summary
1050 then
1051         usage
1052 fi
1053
1054 "cmd_$command" "$@"