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