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