git.oblomov.eu Git - git/blob - 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] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
  13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  14    or: $dashless [--quiet] foreach [--recursive] <command>
  15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  16    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  17 OPTIONS_SPEC=
  18 SUBDIRECTORY_OK=Yes
  19 . git-sh-setup
  20 . git-parse-remote
  21 require_work_tree
  22 wt_prefix=$(git rev-parse --show-prefix)
  23 cd_to_toplevel
  24
  25 # Tell the rest of git that any URLs we get don't come
  26 # directly from the user, so it can apply policy as appropriate.
  27 GIT_PROTOCOL_FROM_USER=0
  28 export GIT_PROTOCOL_FROM_USER
  29
  30 command=
  31 branch=
  32 force=
  33 reference=
  34 cached=
  35 recursive=
  36 init=
  37 files=
  38 remote=
  39 nofetch=
  40 update=
  41 prefix=
  42 custom_name=
  43 depth=
  44 progress=
  45
  46 die_if_unmatched ()
  47 {
  48         if test "$1" = "#unmatched"
  49         then
  50                 exit ${2:-1}
  51         fi
  52 }
  53
  54 #
  55 # Print a submodule configuration setting
  56 #
  57 # $1 = submodule name
  58 # $2 = option name
  59 # $3 = default value
  60 #
  61 # Checks in the usual git-config places first (for overrides),
  62 # otherwise it falls back on .gitmodules.  This allows you to
  63 # distribute project-wide defaults in .gitmodules, while still
  64 # customizing individual repositories if necessary.  If the option is
  65 # not in .gitmodules either, print a default value.
  66 #
  67 get_submodule_config () {
  68         name="$1"
  69         option="$2"
  70         default="$3"
  71         value=$(git config submodule."$name"."$option")
  72         if test -z "$value"
  73         then
  74                 value=$(git config -f .gitmodules submodule."$name"."$option")
  75         fi
  76         printf '%s' "${value:-$default}"
  77 }
  78
  79 isnumber()
  80 {
  81         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  82 }
  83
  84 # Sanitize the local git environment for use within a submodule. We
  85 # can't simply use clear_local_git_env since we want to preserve some
  86 # of the settings from GIT_CONFIG_PARAMETERS.
  87 sanitize_submodule_env()
  88 {
  89         save_config=$GIT_CONFIG_PARAMETERS
  90         clear_local_git_env
  91         GIT_CONFIG_PARAMETERS=$save_config
  92         export GIT_CONFIG_PARAMETERS
  93 }
  94
  95 #
  96 # Add a new submodule to the working tree, .gitmodules and the index
  97 #
  98 # $@ = repo path
  99 #
 100 # optional branch is stored in global branch variable
 101 #
 102 cmd_add()
 103 {
 104         # parse $args after "submodule ... add".
 105         reference_path=
 106         while test $# -ne 0
 107         do
 108                 case "$1" in
 109                 -b | --branch)
 110                         case "$2" in '') usage ;; esac
 111                         branch=$2
 112                         shift
 113                         ;;
 114                 -f | --force)
 115                         force=$1
 116                         ;;
 117                 -q|--quiet)
 118                         GIT_QUIET=1
 119                         ;;
 120                 --reference)
 121                         case "$2" in '') usage ;; esac
 122                         reference_path=$2
 123                         shift
 124                         ;;
 125                 --reference=*)
 126                         reference_path="${1#--reference=}"
 127                         ;;
 128                 --name)
 129                         case "$2" in '') usage ;; esac
 130                         custom_name=$2
 131                         shift
 132                         ;;
 133                 --depth)
 134                         case "$2" in '') usage ;; esac
 135                         depth="--depth=$2"
 136                         shift
 137                         ;;
 138                 --depth=*)
 139                         depth=$1
 140                         ;;
 141                 --)
 142                         shift
 143                         break
 144                         ;;
 145                 -*)
 146                         usage
 147                         ;;
 148                 *)
 149                         break
 150                         ;;
 151                 esac
 152                 shift
 153         done
 154
 155         if test -n "$reference_path"
 156         then
 157                 is_absolute_path "$reference_path" ||
 158                 reference_path="$wt_prefix$reference_path"
 159
 160                 reference="--reference=$reference_path"
 161         fi
 162
 163         repo=$1
 164         sm_path=$2
 165
 166         if test -z "$sm_path"; then
 167                 sm_path=$(printf '%s\n' "$repo" |
 168                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 169         fi
 170
 171         if test -z "$repo" || test -z "$sm_path"; then
 172                 usage
 173         fi
 174
 175         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 176
 177         # assure repo is absolute or relative to parent
 178         case "$repo" in
 179         ./*|../*)
 180                 test -z "$wt_prefix" ||
 181                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 182
 183                 # dereference source url relative to parent's url
 184                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 185                 ;;
 186         *:*|/*)
 187                 # absolute url
 188                 realrepo=$repo
 189                 ;;
 190         *)
 191                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 192         ;;
 193         esac
 194
 195         # normalize path:
 196         # multiple //; leading ./; /./; /../; trailing /
 197         sm_path=$(printf '%s/\n' "$sm_path" |
 198                 sed -e '
 199                         s|//*|/|g
 200                         s|^\(\./\)*||
 201                         s|/\(\./\)*|/|g
 202                         :start
 203                         s|\([^/]*\)/\.\./||
 204                         tstart
 205                         s|/*$||
 206                 ')
 207         git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 208         die "$(eval_gettext "'\$sm_path' already exists in the index")"
 209
 210         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 211         then
 212                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 213 \$sm_path
 214 Use -f if you really want to add it." >&2
 215                 exit 1
 216         fi
 217
 218         if test -n "$custom_name"
 219         then
 220                 sm_name="$custom_name"
 221         else
 222                 sm_name="$sm_path"
 223         fi
 224
 225         # perhaps the path exists and is already a git repo, else clone it
 226         if test -e "$sm_path"
 227         then
 228                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 229                 then
 230                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 231                 else
 232                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 233                 fi
 234
 235         else
 236                 if test -d ".git/modules/$sm_name"
 237                 then
 238                         if test -z "$force"
 239                         then
 240                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 241                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 242                                 die "$(eval_gettextln "\
 243 If you want to reuse this local git directory instead of cloning again from
 244   \$realrepo
 245 use the '--force' option. If the local git directory is not the correct repo
 246 or you are unsure what this means choose another name with the '--name' option.")"
 247                         else
 248                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 249                         fi
 250                 fi
 251                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 252                 (
 253                         sanitize_submodule_env
 254                         cd "$sm_path" &&
 255                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 256                         case "$branch" in
 257                         '') git checkout -f -q ;;
 258                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 259                         esac
 260                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 261         fi
 262         git config submodule."$sm_name".url "$realrepo"
 263
 264         git add $force "$sm_path" ||
 265         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 266
 267         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 268         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 269         if test -n "$branch"
 270         then
 271                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
 272         fi &&
 273         git add --force .gitmodules ||
 274         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 275 }
 276
 277 #
 278 # Execute an arbitrary command sequence in each checked out
 279 # submodule
 280 #
 281 # $@ = command to execute
 282 #
 283 cmd_foreach()
 284 {
 285         # parse $args after "submodule ... foreach".
 286         while test $# -ne 0
 287         do
 288                 case "$1" in
 289                 -q|--quiet)
 290                         GIT_QUIET=1
 291                         ;;
 292                 --recursive)
 293                         recursive=1
 294                         ;;
 295                 -*)
 296                         usage
 297                         ;;
 298                 *)
 299                         break
 300                         ;;
 301                 esac
 302                 shift
 303         done
 304
 305         toplevel=$(pwd)
 306
 307         # dup stdin so that it can be restored when running the external
 308         # command in the subshell (and a recursive call to this function)
 309         exec 3<&0
 310
 311         {
 312                 git submodule--helper list --prefix "$wt_prefix" ||
 313                 echo "#unmatched" $?
 314         } |
 315         while read mode sha1 stage sm_path
 316         do
 317                 die_if_unmatched "$mode" "$sha1"
 318                 if test -e "$sm_path"/.git
 319                 then
 320                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 321                         say "$(eval_gettext "Entering '\$displaypath'")"
 322                         name=$(git submodule--helper name "$sm_path")
 323                         (
 324                                 prefix="$prefix$sm_path/"
 325                                 sanitize_submodule_env
 326                                 cd "$sm_path" &&
 327                                 sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
 328                                 # we make $path available to scripts ...
 329                                 path=$sm_path &&
 330                                 if test $# -eq 1
 331                                 then
 332                                         eval "$1"
 333                                 else
 334                                         "$@"
 335                                 fi &&
 336                                 if test -n "$recursive"
 337                                 then
 338                                         cmd_foreach "--recursive" "$@"
 339                                 fi
 340                         ) <&3 3<&- ||
 341                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 342                 fi
 343         done
 344 }
 345
 346 #
 347 # Register submodules in .git/config
 348 #
 349 # $@ = requested paths (default to all)
 350 #
 351 cmd_init()
 352 {
 353         # parse $args after "submodule ... init".
 354         while test $# -ne 0
 355         do
 356                 case "$1" in
 357                 -q|--quiet)
 358                         GIT_QUIET=1
 359                         ;;
 360                 --)
 361                         shift
 362                         break
 363                         ;;
 364                 -*)
 365                         usage
 366                         ;;
 367                 *)
 368                         break
 369                         ;;
 370                 esac
 371                 shift
 372         done
 373
 374         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 375 }
 376
 377 #
 378 # Unregister submodules from .git/config and remove their work tree
 379 #
 380 cmd_deinit()
 381 {
 382         # parse $args after "submodule ... deinit".
 383         deinit_all=
 384         while test $# -ne 0
 385         do
 386                 case "$1" in
 387                 -f|--force)
 388                         force=$1
 389                         ;;
 390                 -q|--quiet)
 391                         GIT_QUIET=1
 392                         ;;
 393                 --all)
 394                         deinit_all=t
 395                         ;;
 396                 --)
 397                         shift
 398                         break
 399                         ;;
 400                 -*)
 401                         usage
 402                         ;;
 403                 *)
 404                         break
 405                         ;;
 406                 esac
 407                 shift
 408         done
 409
 410         if test -n "$deinit_all" && test "$#" -ne 0
 411         then
 412                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 413                 usage
 414         fi
 415         if test $# = 0 && test -z "$deinit_all"
 416         then
 417                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 418         fi
 419
 420         {
 421                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
 422                 echo "#unmatched" $?
 423         } |
 424         while read mode sha1 stage sm_path
 425         do
 426                 die_if_unmatched "$mode" "$sha1"
 427                 name=$(git submodule--helper name "$sm_path") || exit
 428
 429                 displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
 430
 431                 # Remove the submodule work tree (unless the user already did it)
 432                 if test -d "$sm_path"
 433                 then
 434                         # Protect submodules containing a .git directory
 435                         if test -d "$sm_path/.git"
 436                         then
 437                                 die "$(eval_gettext "\
 438 Submodule work tree '\$displaypath' contains a .git directory
 439 (use 'rm -rf' if you really want to remove it including all of its history)")"
 440                         fi
 441
 442                         if test -z "$force"
 443                         then
 444                                 git rm -qn "$sm_path" ||
 445                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 446                         fi
 447                         rm -rf "$sm_path" &&
 448                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 449                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 450                 fi
 451
 452                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 453
 454                 # Remove the .git/config entries (unless the user already did it)
 455                 if test -n "$(git config --get-regexp submodule."$name\.")"
 456                 then
 457                         # Remove the whole section so we have a clean state when
 458                         # the user later decides to init this submodule again
 459                         url=$(git config submodule."$name".url)
 460                         git config --remove-section submodule."$name" 2>/dev/null &&
 461                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 462                 fi
 463         done
 464 }
 465
 466 is_tip_reachable () (
 467         sanitize_submodule_env &&
 468         cd "$1" &&
 469         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 470         test -z "$rev"
 471 )
 472
 473 fetch_in_submodule () (
 474         sanitize_submodule_env &&
 475         cd "$1" &&
 476         case "$2" in
 477         '')
 478                 git fetch ;;
 479         *)
 480                 shift
 481                 git fetch $(get_default_remote) "$@" ;;
 482         esac
 483 )
 484
 485 #
 486 # Update each submodule path to correct revision, using clone and checkout as needed
 487 #
 488 # $@ = requested paths (default to all)
 489 #
 490 cmd_update()
 491 {
 492         # parse $args after "submodule ... update".
 493         while test $# -ne 0
 494         do
 495                 case "$1" in
 496                 -q|--quiet)
 497                         GIT_QUIET=1
 498                         ;;
 499                 --progress)
 500                         progress="--progress"
 501                         ;;
 502                 -i|--init)
 503                         init=1
 504                         ;;
 505                 --remote)
 506                         remote=1
 507                         ;;
 508                 -N|--no-fetch)
 509                         nofetch=1
 510                         ;;
 511                 -f|--force)
 512                         force=$1
 513                         ;;
 514                 -r|--rebase)
 515                         update="rebase"
 516                         ;;
 517                 --reference)
 518                         case "$2" in '') usage ;; esac
 519                         reference="--reference=$2"
 520                         shift
 521                         ;;
 522                 --reference=*)
 523                         reference="$1"
 524                         ;;
 525                 -m|--merge)
 526                         update="merge"
 527                         ;;
 528                 --recursive)
 529                         recursive=1
 530                         ;;
 531                 --checkout)
 532                         update="checkout"
 533                         ;;
 534                 --recommend-shallow)
 535                         recommend_shallow="--recommend-shallow"
 536                         ;;
 537                 --no-recommend-shallow)
 538                         recommend_shallow="--no-recommend-shallow"
 539                         ;;
 540                 --depth)
 541                         case "$2" in '') usage ;; esac
 542                         depth="--depth=$2"
 543                         shift
 544                         ;;
 545                 --depth=*)
 546                         depth=$1
 547                         ;;
 548                 -j|--jobs)
 549                         case "$2" in '') usage ;; esac
 550                         jobs="--jobs=$2"
 551                         shift
 552                         ;;
 553                 --jobs=*)
 554                         jobs=$1
 555                         ;;
 556                 --)
 557                         shift
 558                         break
 559                         ;;
 560                 -*)
 561                         usage
 562                         ;;
 563                 *)
 564                         break
 565                         ;;
 566                 esac
 567                 shift
 568         done
 569
 570         if test -n "$init"
 571         then
 572                 cmd_init "--" "$@" || return
 573         fi
 574
 575         {
 576         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 577                 ${progress:+"$progress"} \
 578                 ${wt_prefix:+--prefix "$wt_prefix"} \
 579                 ${prefix:+--recursive-prefix "$prefix"} \
 580                 ${update:+--update "$update"} \
 581                 ${reference:+"$reference"} \
 582                 ${depth:+--depth "$depth"} \
 583                 ${recommend_shallow:+"$recommend_shallow"} \
 584                 ${jobs:+$jobs} \
 585                 "$@" || echo "#unmatched" $?
 586         } | {
 587         err=
 588         while read mode sha1 stage just_cloned sm_path
 589         do
 590                 die_if_unmatched "$mode" "$sha1"
 591
 592                 name=$(git submodule--helper name "$sm_path") || exit
 593                 url=$(git config submodule."$name".url)
 594                 if ! test -z "$update"
 595                 then
 596                         update_module=$update
 597                 else
 598                         update_module=$(git config submodule."$name".update)
 599                         if test -z "$update_module"
 600                         then
 601                                 update_module="checkout"
 602                         fi
 603                 fi
 604
 605                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 606
 607                 if test $just_cloned -eq 1
 608                 then
 609                         subsha1=
 610                         update_module=checkout
 611                 else
 612                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 613                                 git rev-parse --verify HEAD) ||
 614                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 615                 fi
 616
 617                 if test -n "$remote"
 618                 then
 619                         branch=$(git submodule--helper remote-branch "$sm_path")
 620                         if test -z "$nofetch"
 621                         then
 622                                 # Fetch remote before determining tracking $sha1
 623                                 fetch_in_submodule "$sm_path" $depth ||
 624                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 625                         fi
 626                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 627                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 628                                 git rev-parse --verify "${remote_name}/${branch}") ||
 629                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 630                 fi
 631
 632                 if test "$subsha1" != "$sha1" || test -n "$force"
 633                 then
 634                         subforce=$force
 635                         # If we don't already have a -f flag and the submodule has never been checked out
 636                         if test -z "$subsha1" && test -z "$force"
 637                         then
 638                                 subforce="-f"
 639                         fi
 640
 641                         if test -z "$nofetch"
 642                         then
 643                                 # Run fetch only if $sha1 isn't present or it
 644                                 # is not reachable from a ref.
 645                                 is_tip_reachable "$sm_path" "$sha1" ||
 646                                 fetch_in_submodule "$sm_path" $depth ||
 647                                 die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 648
 649                                 # Now we tried the usual fetch, but $sha1 may
 650                                 # not be reachable from any of the refs
 651                                 is_tip_reachable "$sm_path" "$sha1" ||
 652                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
 653                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 654                         fi
 655
 656                         must_die_on_failure=
 657                         case "$update_module" in
 658                         checkout)
 659                                 command="git checkout $subforce -q"
 660                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 661                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 662                                 ;;
 663                         rebase)
 664                                 command="git rebase"
 665                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 666                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 667                                 must_die_on_failure=yes
 668                                 ;;
 669                         merge)
 670                                 command="git merge"
 671                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 672                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 673                                 must_die_on_failure=yes
 674                                 ;;
 675                         !*)
 676                                 command="${update_module#!}"
 677                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 678                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 679                                 must_die_on_failure=yes
 680                                 ;;
 681                         *)
 682                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
 683                         esac
 684
 685                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 686                         then
 687                                 say "$say_msg"
 688                         elif test -n "$must_die_on_failure"
 689                         then
 690                                 die_with_status 2 "$die_msg"
 691                         else
 692                                 err="${err};$die_msg"
 693                                 continue
 694                         fi
 695                 fi
 696
 697                 if test -n "$recursive"
 698                 then
 699                         (
 700                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 701                                 wt_prefix=
 702                                 sanitize_submodule_env
 703                                 cd "$sm_path" &&
 704                                 eval cmd_update
 705                         )
 706                         res=$?
 707                         if test $res -gt 0
 708                         then
 709                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 710                                 if test $res -ne 2
 711                                 then
 712                                         err="${err};$die_msg"
 713                                         continue
 714                                 else
 715                                         die_with_status $res "$die_msg"
 716                                 fi
 717                         fi
 718                 fi
 719         done
 720
 721         if test -n "$err"
 722         then
 723                 OIFS=$IFS
 724                 IFS=';'
 725                 for e in $err
 726                 do
 727                         if test -n "$e"
 728                         then
 729                                 echo >&2 "$e"
 730                         fi
 731                 done
 732                 IFS=$OIFS
 733                 exit 1
 734         fi
 735         }
 736 }
 737
 738 set_name_rev () {
 739         revname=$( (
 740                 sanitize_submodule_env
 741                 cd "$1" && {
 742                         git describe "$2" 2>/dev/null ||
 743                         git describe --tags "$2" 2>/dev/null ||
 744                         git describe --contains "$2" 2>/dev/null ||
 745                         git describe --all --always "$2"
 746                 }
 747         ) )
 748         test -z "$revname" || revname=" ($revname)"
 749 }
 750 #
 751 # Show commit summary for submodules in index or working tree
 752 #
 753 # If '--cached' is given, show summary between index and given commit,
 754 # or between working tree and given commit
 755 #
 756 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 757 #
 758 cmd_summary() {
 759         summary_limit=-1
 760         for_status=
 761         diff_cmd=diff-index
 762
 763         # parse $args after "submodule ... summary".
 764         while test $# -ne 0
 765         do
 766                 case "$1" in
 767                 --cached)
 768                         cached="$1"
 769                         ;;
 770                 --files)
 771                         files="$1"
 772                         ;;
 773                 --for-status)
 774                         for_status="$1"
 775                         ;;
 776                 -n|--summary-limit)
 777                         summary_limit="$2"
 778                         isnumber "$summary_limit" || usage
 779                         shift
 780                         ;;
 781                 --summary-limit=*)
 782                         summary_limit="${1#--summary-limit=}"
 783                         isnumber "$summary_limit" || usage
 784                         ;;
 785                 --)
 786                         shift
 787                         break
 788                         ;;
 789                 -*)
 790                         usage
 791                         ;;
 792                 *)
 793                         break
 794                         ;;
 795                 esac
 796                 shift
 797         done
 798
 799         test $summary_limit = 0 && return
 800
 801         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 802         then
 803                 head=$rev
 804                 test $# = 0 || shift
 805         elif test -z "$1" || test "$1" = "HEAD"
 806         then
 807                 # before the first commit: compare with an empty tree
 808                 head=$(git hash-object -w -t tree --stdin </dev/null)
 809                 test -z "$1" || shift
 810         else
 811                 head="HEAD"
 812         fi
 813
 814         if [ -n "$files" ]
 815         then
 816                 test -n "$cached" &&
 817                 die "$(gettext "The --cached option cannot be used with the --files option")"
 818                 diff_cmd=diff-files
 819                 head=
 820         fi
 821
 822         cd_to_toplevel
 823         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 824         # Get modified modules cared by user
 825         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 826                 sane_egrep '^:([0-7]* )?160000' |
 827                 while read mod_src mod_dst sha1_src sha1_dst status sm_path
 828                 do
 829                         # Always show modules deleted or type-changed (blob<->module)
 830                         if test "$status" = D || test "$status" = T
 831                         then
 832                                 printf '%s\n' "$sm_path"
 833                                 continue
 834                         fi
 835                         # Respect the ignore setting for --for-status.
 836                         if test -n "$for_status"
 837                         then
 838                                 name=$(git submodule--helper name "$sm_path")
 839                                 ignore_config=$(get_submodule_config "$name" ignore none)
 840                                 test $status != A && test $ignore_config = all && continue
 841                         fi
 842                         # Also show added or modified modules which are checked out
 843                         GIT_DIR="$sm_path/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 844                         printf '%s\n' "$sm_path"
 845                 done
 846         )
 847
 848         test -z "$modules" && return
 849
 850         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 851         sane_egrep '^:([0-7]* )?160000' |
 852         cut -c2- |
 853         while read mod_src mod_dst sha1_src sha1_dst status name
 854         do
 855                 if test -z "$cached" &&
 856                         test $sha1_dst = 0000000000000000000000000000000000000000
 857                 then
 858                         case "$mod_dst" in
 859                         160000)
 860                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 861                                 ;;
 862                         100644 | 100755 | 120000)
 863                                 sha1_dst=$(git hash-object $name)
 864                                 ;;
 865                         000000)
 866                                 ;; # removed
 867                         *)
 868                                 # unexpected type
 869                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 870                                 continue ;;
 871                         esac
 872                 fi
 873                 missing_src=
 874                 missing_dst=
 875
 876                 test $mod_src = 160000 &&
 877                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 878                 missing_src=t
 879
 880                 test $mod_dst = 160000 &&
 881                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 882                 missing_dst=t
 883
 884                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 885
 886                 total_commits=
 887                 case "$missing_src,$missing_dst" in
 888                 t,)
 889                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 890                         ;;
 891                 ,t)
 892                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 893                         ;;
 894                 t,t)
 895                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 896                         ;;
 897                 *)
 898                         errmsg=
 899                         total_commits=$(
 900                         if test $mod_src = 160000 && test $mod_dst = 160000
 901                         then
 902                                 range="$sha1_src...$sha1_dst"
 903                         elif test $mod_src = 160000
 904                         then
 905                                 range=$sha1_src
 906                         else
 907                                 range=$sha1_dst
 908                         fi
 909                         GIT_DIR="$name/.git" \
 910                         git rev-list --first-parent $range -- | wc -l
 911                         )
 912                         total_commits=" ($(($total_commits + 0)))"
 913                         ;;
 914                 esac
 915
 916                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 917                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 918                 if test $status = T
 919                 then
 920                         blob="$(gettext "blob")"
 921                         submodule="$(gettext "submodule")"
 922                         if test $mod_dst = 160000
 923                         then
 924                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 925                         else
 926                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 927                         fi
 928                 else
 929                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 930                 fi
 931                 if test -n "$errmsg"
 932                 then
 933                         # Don't give error msg for modification whose dst is not submodule
 934                         # i.e. deleted or changed to blob
 935                         test $mod_dst = 160000 && echo "$errmsg"
 936                 else
 937                         if test $mod_src = 160000 && test $mod_dst = 160000
 938                         then
 939                                 limit=
 940                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 941                                 GIT_DIR="$name/.git" \
 942                                 git log $limit --pretty='format:  %m %s' \
 943                                 --first-parent $sha1_src...$sha1_dst
 944                         elif test $mod_dst = 160000
 945                         then
 946                                 GIT_DIR="$name/.git" \
 947                                 git log --pretty='format:  > %s' -1 $sha1_dst
 948                         else
 949                                 GIT_DIR="$name/.git" \
 950                                 git log --pretty='format:  < %s' -1 $sha1_src
 951                         fi
 952                         echo
 953                 fi
 954                 echo
 955         done
 956 }
 957 #
 958 # List all submodules, prefixed with:
 959 #  - submodule not initialized
 960 #  + different revision checked out
 961 #
 962 # If --cached was specified the revision in the index will be printed
 963 # instead of the currently checked out revision.
 964 #
 965 # $@ = requested paths (default to all)
 966 #
 967 cmd_status()
 968 {
 969         # parse $args after "submodule ... status".
 970         while test $# -ne 0
 971         do
 972                 case "$1" in
 973                 -q|--quiet)
 974                         GIT_QUIET=1
 975                         ;;
 976                 --cached)
 977                         cached=1
 978                         ;;
 979                 --recursive)
 980                         recursive=1
 981                         ;;
 982                 --)
 983                         shift
 984                         break
 985                         ;;
 986                 -*)
 987                         usage
 988                         ;;
 989                 *)
 990                         break
 991                         ;;
 992                 esac
 993                 shift
 994         done
 995
 996         {
 997                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
 998                 echo "#unmatched" $?
 999         } |
1000         while read mode sha1 stage sm_path
1001         do
1002                 die_if_unmatched "$mode" "$sha1"
1003                 name=$(git submodule--helper name "$sm_path") || exit
1004                 url=$(git config submodule."$name".url)
1005                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1006                 if test "$stage" = U
1007                 then
1008                         say "U$sha1 $displaypath"
1009                         continue
1010                 fi
1011                 if test -z "$url" ||
1012                 {
1013                         ! test -d "$sm_path"/.git &&
1014                         ! test -f "$sm_path"/.git
1015                 }
1016                 then
1017                         say "-$sha1 $displaypath"
1018                         continue;
1019                 fi
1020                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1021                 then
1022                         set_name_rev "$sm_path" "$sha1"
1023                         say " $sha1 $displaypath$revname"
1024                 else
1025                         if test -z "$cached"
1026                         then
1027                                 sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1028                         fi
1029                         set_name_rev "$sm_path" "$sha1"
1030                         say "+$sha1 $displaypath$revname"
1031                 fi
1032
1033                 if test -n "$recursive"
1034                 then
1035                         (
1036                                 prefix="$displaypath/"
1037                                 sanitize_submodule_env
1038                                 wt_prefix=
1039                                 cd "$sm_path" &&
1040                                 eval cmd_status
1041                         ) ||
1042                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1043                 fi
1044         done
1045 }
1046 #
1047 # Sync remote urls for submodules
1048 # This makes the value for remote.$remote.url match the value
1049 # specified in .gitmodules.
1050 #
1051 cmd_sync()
1052 {
1053         while test $# -ne 0
1054         do
1055                 case "$1" in
1056                 -q|--quiet)
1057                         GIT_QUIET=1
1058                         shift
1059                         ;;
1060                 --recursive)
1061                         recursive=1
1062                         shift
1063                         ;;
1064                 --)
1065                         shift
1066                         break
1067                         ;;
1068                 -*)
1069                         usage
1070                         ;;
1071                 *)
1072                         break
1073                         ;;
1074                 esac
1075         done
1076         cd_to_toplevel
1077         {
1078                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1079                 echo "#unmatched" $?
1080         } |
1081         while read mode sha1 stage sm_path
1082         do
1083                 die_if_unmatched "$mode" "$sha1"
1084                 name=$(git submodule--helper name "$sm_path")
1085                 url=$(git config -f .gitmodules --get submodule."$name".url)
1086
1087                 # Possibly a url relative to parent
1088                 case "$url" in
1089                 ./*|../*)
1090                         # rewrite foo/bar as ../.. to find path from
1091                         # submodule work tree to superproject work tree
1092                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1093                         # guarantee a trailing /
1094                         up_path=${up_path%/}/ &&
1095                         # path from submodule work tree to submodule origin repo
1096                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1097                         # path from superproject work tree to submodule origin repo
1098                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1099                         ;;
1100                 *)
1101                         sub_origin_url="$url"
1102                         super_config_url="$url"
1103                         ;;
1104                 esac
1105
1106                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
1107                 then
1108                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1109                         say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1110                         git config submodule."$name".url "$super_config_url"
1111
1112                         if test -e "$sm_path"/.git
1113                         then
1114                         (
1115                                 sanitize_submodule_env
1116                                 cd "$sm_path"
1117                                 remote=$(get_default_remote)
1118                                 git config remote."$remote".url "$sub_origin_url"
1119
1120                                 if test -n "$recursive"
1121                                 then
1122                                         prefix="$prefix$sm_path/"
1123                                         eval cmd_sync
1124                                 fi
1125                         )
1126                         fi
1127                 fi
1128         done
1129 }
1130
1131 cmd_absorbgitdirs()
1132 {
1133         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1134 }
1135
1136 # This loop parses the command line arguments to find the
1137 # subcommand name to dispatch.  Parsing of the subcommand specific
1138 # options are primarily done by the subcommand implementations.
1139 # Subcommand specific options such as --branch and --cached are
1140 # parsed here as well, for backward compatibility.
1141
1142 while test $# != 0 && test -z "$command"
1143 do
1144         case "$1" in
1145         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1146                 command=$1
1147                 ;;
1148         -q|--quiet)
1149                 GIT_QUIET=1
1150                 ;;
1151         -b|--branch)
1152                 case "$2" in
1153                 '')
1154                         usage
1155                         ;;
1156                 esac
1157                 branch="$2"; shift
1158                 ;;
1159         --cached)
1160                 cached="$1"
1161                 ;;
1162         --)
1163                 break
1164                 ;;
1165         -*)
1166                 usage
1167                 ;;
1168         *)
1169                 break
1170                 ;;
1171         esac
1172         shift
1173 done
1174
1175 # No command word defaults to "status"
1176 if test -z "$command"
1177 then
1178     if test $# = 0
1179     then
1180         command=status
1181     else
1182         usage
1183     fi
1184 fi
1185
1186 # "-b branch" is accepted only by "add"
1187 if test -n "$branch" && test "$command" != add
1188 then
1189         usage
1190 fi
1191
1192 # "--cached" is accepted only by "status" and "summary"
1193 if test -n "$cached" && test "$command" != status && test "$command" != summary
1194 then
1195         usage
1196 fi
1197
1198 "cmd_$command" "$@"