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|/*$||
 206                 ')
 207         if test -z "$force"
 208         then
 209                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 210                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
 211         else
 212                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 213                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 214         fi
 215
 216         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 217         then
 218                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 219 \$sm_path
 220 Use -f if you really want to add it." >&2
 221                 exit 1
 222         fi
 223
 224         if test -n "$custom_name"
 225         then
 226                 sm_name="$custom_name"
 227         else
 228                 sm_name="$sm_path"
 229         fi
 230
 231         # perhaps the path exists and is already a git repo, else clone it
 232         if test -e "$sm_path"
 233         then
 234                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 235                 then
 236                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 237                 else
 238                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 239                 fi
 240
 241         else
 242                 if test -d ".git/modules/$sm_name"
 243                 then
 244                         if test -z "$force"
 245                         then
 246                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 247                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 248                                 die "$(eval_gettextln "\
 249 If you want to reuse this local git directory instead of cloning again from
 250   \$realrepo
 251 use the '--force' option. If the local git directory is not the correct repo
 252 or you are unsure what this means choose another name with the '--name' option.")"
 253                         else
 254                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 255                         fi
 256                 fi
 257                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 258                 (
 259                         sanitize_submodule_env
 260                         cd "$sm_path" &&
 261                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 262                         case "$branch" in
 263                         '') git checkout -f -q ;;
 264                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 265                         esac
 266                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 267         fi
 268         git config submodule."$sm_name".url "$realrepo"
 269
 270         git add $force "$sm_path" ||
 271         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 272
 273         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 274         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 275         if test -n "$branch"
 276         then
 277                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
 278         fi &&
 279         git add --force .gitmodules ||
 280         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 281
 282         # NEEDSWORK: In a multi-working-tree world, this needs to be
 283         # set in the per-worktree config.
 284         if git config --get submodule.active >/dev/null
 285         then
 286                 # If the submodule being adding isn't already covered by the
 287                 # current configured pathspec, set the submodule's active flag
 288                 if ! git submodule--helper is-active "$sm_path"
 289                 then
 290                         git config submodule."$sm_name".active "true"
 291                 fi
 292         else
 293                 git config submodule."$sm_name".active "true"
 294         fi
 295 }
 296
 297 #
 298 # Execute an arbitrary command sequence in each checked out
 299 # submodule
 300 #
 301 # $@ = command to execute
 302 #
 303 cmd_foreach()
 304 {
 305         # parse $args after "submodule ... foreach".
 306         while test $# -ne 0
 307         do
 308                 case "$1" in
 309                 -q|--quiet)
 310                         GIT_QUIET=1
 311                         ;;
 312                 --recursive)
 313                         recursive=1
 314                         ;;
 315                 -*)
 316                         usage
 317                         ;;
 318                 *)
 319                         break
 320                         ;;
 321                 esac
 322                 shift
 323         done
 324
 325         toplevel=$(pwd)
 326
 327         # dup stdin so that it can be restored when running the external
 328         # command in the subshell (and a recursive call to this function)
 329         exec 3<&0
 330
 331         {
 332                 git submodule--helper list --prefix "$wt_prefix" ||
 333                 echo "#unmatched" $?
 334         } |
 335         while read mode sha1 stage sm_path
 336         do
 337                 die_if_unmatched "$mode" "$sha1"
 338                 if test -e "$sm_path"/.git
 339                 then
 340                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 341                         say "$(eval_gettext "Entering '\$displaypath'")"
 342                         name=$(git submodule--helper name "$sm_path")
 343                         (
 344                                 prefix="$prefix$sm_path/"
 345                                 sanitize_submodule_env
 346                                 cd "$sm_path" &&
 347                                 sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
 348                                 # we make $path available to scripts ...
 349                                 path=$sm_path &&
 350                                 if test $# -eq 1
 351                                 then
 352                                         eval "$1"
 353                                 else
 354                                         "$@"
 355                                 fi &&
 356                                 if test -n "$recursive"
 357                                 then
 358                                         cmd_foreach "--recursive" "$@"
 359                                 fi
 360                         ) <&3 3<&- ||
 361                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 362                 fi
 363         done
 364 }
 365
 366 #
 367 # Register submodules in .git/config
 368 #
 369 # $@ = requested paths (default to all)
 370 #
 371 cmd_init()
 372 {
 373         # parse $args after "submodule ... init".
 374         while test $# -ne 0
 375         do
 376                 case "$1" in
 377                 -q|--quiet)
 378                         GIT_QUIET=1
 379                         ;;
 380                 --)
 381                         shift
 382                         break
 383                         ;;
 384                 -*)
 385                         usage
 386                         ;;
 387                 *)
 388                         break
 389                         ;;
 390                 esac
 391                 shift
 392         done
 393
 394         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 395 }
 396
 397 #
 398 # Unregister submodules from .git/config and remove their work tree
 399 #
 400 cmd_deinit()
 401 {
 402         # parse $args after "submodule ... deinit".
 403         deinit_all=
 404         while test $# -ne 0
 405         do
 406                 case "$1" in
 407                 -f|--force)
 408                         force=$1
 409                         ;;
 410                 -q|--quiet)
 411                         GIT_QUIET=1
 412                         ;;
 413                 --all)
 414                         deinit_all=t
 415                         ;;
 416                 --)
 417                         shift
 418                         break
 419                         ;;
 420                 -*)
 421                         usage
 422                         ;;
 423                 *)
 424                         break
 425                         ;;
 426                 esac
 427                 shift
 428         done
 429
 430         if test -n "$deinit_all" && test "$#" -ne 0
 431         then
 432                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 433                 usage
 434         fi
 435         if test $# = 0 && test -z "$deinit_all"
 436         then
 437                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 438         fi
 439
 440         {
 441                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
 442                 echo "#unmatched" $?
 443         } |
 444         while read mode sha1 stage sm_path
 445         do
 446                 die_if_unmatched "$mode" "$sha1"
 447                 name=$(git submodule--helper name "$sm_path") || exit
 448
 449                 displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
 450
 451                 # Remove the submodule work tree (unless the user already did it)
 452                 if test -d "$sm_path"
 453                 then
 454                         # Protect submodules containing a .git directory
 455                         if test -d "$sm_path/.git"
 456                         then
 457                                 die "$(eval_gettext "\
 458 Submodule work tree '\$displaypath' contains a .git directory
 459 (use 'rm -rf' if you really want to remove it including all of its history)")"
 460                         fi
 461
 462                         if test -z "$force"
 463                         then
 464                                 git rm -qn "$sm_path" ||
 465                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 466                         fi
 467                         rm -rf "$sm_path" &&
 468                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 469                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 470                 fi
 471
 472                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 473
 474                 # Remove the .git/config entries (unless the user already did it)
 475                 if test -n "$(git config --get-regexp submodule."$name\.")"
 476                 then
 477                         # Remove the whole section so we have a clean state when
 478                         # the user later decides to init this submodule again
 479                         url=$(git config submodule."$name".url)
 480                         git config --remove-section submodule."$name" 2>/dev/null &&
 481                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 482                 fi
 483         done
 484 }
 485
 486 is_tip_reachable () (
 487         sanitize_submodule_env &&
 488         cd "$1" &&
 489         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 490         test -z "$rev"
 491 )
 492
 493 fetch_in_submodule () (
 494         sanitize_submodule_env &&
 495         cd "$1" &&
 496         case "$2" in
 497         '')
 498                 git fetch ;;
 499         *)
 500                 shift
 501                 git fetch $(get_default_remote) "$@" ;;
 502         esac
 503 )
 504
 505 #
 506 # Update each submodule path to correct revision, using clone and checkout as needed
 507 #
 508 # $@ = requested paths (default to all)
 509 #
 510 cmd_update()
 511 {
 512         # parse $args after "submodule ... update".
 513         while test $# -ne 0
 514         do
 515                 case "$1" in
 516                 -q|--quiet)
 517                         GIT_QUIET=1
 518                         ;;
 519                 --progress)
 520                         progress="--progress"
 521                         ;;
 522                 -i|--init)
 523                         init=1
 524                         ;;
 525                 --remote)
 526                         remote=1
 527                         ;;
 528                 -N|--no-fetch)
 529                         nofetch=1
 530                         ;;
 531                 -f|--force)
 532                         force=$1
 533                         ;;
 534                 -r|--rebase)
 535                         update="rebase"
 536                         ;;
 537                 --reference)
 538                         case "$2" in '') usage ;; esac
 539                         reference="--reference=$2"
 540                         shift
 541                         ;;
 542                 --reference=*)
 543                         reference="$1"
 544                         ;;
 545                 -m|--merge)
 546                         update="merge"
 547                         ;;
 548                 --recursive)
 549                         recursive=1
 550                         ;;
 551                 --checkout)
 552                         update="checkout"
 553                         ;;
 554                 --recommend-shallow)
 555                         recommend_shallow="--recommend-shallow"
 556                         ;;
 557                 --no-recommend-shallow)
 558                         recommend_shallow="--no-recommend-shallow"
 559                         ;;
 560                 --depth)
 561                         case "$2" in '') usage ;; esac
 562                         depth="--depth=$2"
 563                         shift
 564                         ;;
 565                 --depth=*)
 566                         depth=$1
 567                         ;;
 568                 -j|--jobs)
 569                         case "$2" in '') usage ;; esac
 570                         jobs="--jobs=$2"
 571                         shift
 572                         ;;
 573                 --jobs=*)
 574                         jobs=$1
 575                         ;;
 576                 --)
 577                         shift
 578                         break
 579                         ;;
 580                 -*)
 581                         usage
 582                         ;;
 583                 *)
 584                         break
 585                         ;;
 586                 esac
 587                 shift
 588         done
 589
 590         if test -n "$init"
 591         then
 592                 cmd_init "--" "$@" || return
 593         fi
 594
 595         {
 596         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 597                 ${progress:+"$progress"} \
 598                 ${wt_prefix:+--prefix "$wt_prefix"} \
 599                 ${prefix:+--recursive-prefix "$prefix"} \
 600                 ${update:+--update "$update"} \
 601                 ${reference:+"$reference"} \
 602                 ${depth:+--depth "$depth"} \
 603                 ${recommend_shallow:+"$recommend_shallow"} \
 604                 ${jobs:+$jobs} \
 605                 "$@" || echo "#unmatched" $?
 606         } | {
 607         err=
 608         while read mode sha1 stage just_cloned sm_path
 609         do
 610                 die_if_unmatched "$mode" "$sha1"
 611
 612                 name=$(git submodule--helper name "$sm_path") || exit
 613                 url=$(git config submodule."$name".url)
 614                 if ! test -z "$update"
 615                 then
 616                         update_module=$update
 617                 else
 618                         update_module=$(git config submodule."$name".update)
 619                         if test -z "$update_module"
 620                         then
 621                                 update_module="checkout"
 622                         fi
 623                 fi
 624
 625                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 626
 627                 if test $just_cloned -eq 1
 628                 then
 629                         subsha1=
 630                         case "$update_module" in
 631                         merge | rebase | none)
 632                                 update_module=checkout ;;
 633                         esac
 634                 else
 635                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 636                                 git rev-parse --verify HEAD) ||
 637                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 638                 fi
 639
 640                 if test -n "$remote"
 641                 then
 642                         branch=$(git submodule--helper remote-branch "$sm_path")
 643                         if test -z "$nofetch"
 644                         then
 645                                 # Fetch remote before determining tracking $sha1
 646                                 fetch_in_submodule "$sm_path" $depth ||
 647                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 648                         fi
 649                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 650                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 651                                 git rev-parse --verify "${remote_name}/${branch}") ||
 652                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 653                 fi
 654
 655                 if test "$subsha1" != "$sha1" || test -n "$force"
 656                 then
 657                         subforce=$force
 658                         # If we don't already have a -f flag and the submodule has never been checked out
 659                         if test -z "$subsha1" && test -z "$force"
 660                         then
 661                                 subforce="-f"
 662                         fi
 663
 664                         if test -z "$nofetch"
 665                         then
 666                                 # Run fetch only if $sha1 isn't present or it
 667                                 # is not reachable from a ref.
 668                                 is_tip_reachable "$sm_path" "$sha1" ||
 669                                 fetch_in_submodule "$sm_path" $depth ||
 670                                 die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 671
 672                                 # Now we tried the usual fetch, but $sha1 may
 673                                 # not be reachable from any of the refs
 674                                 is_tip_reachable "$sm_path" "$sha1" ||
 675                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
 676                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 677                         fi
 678
 679                         must_die_on_failure=
 680                         case "$update_module" in
 681                         checkout)
 682                                 command="git checkout $subforce -q"
 683                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 684                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 685                                 ;;
 686                         rebase)
 687                                 command="git rebase"
 688                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 689                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 690                                 must_die_on_failure=yes
 691                                 ;;
 692                         merge)
 693                                 command="git merge"
 694                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 695                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 696                                 must_die_on_failure=yes
 697                                 ;;
 698                         !*)
 699                                 command="${update_module#!}"
 700                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 701                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 702                                 must_die_on_failure=yes
 703                                 ;;
 704                         *)
 705                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
 706                         esac
 707
 708                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 709                         then
 710                                 say "$say_msg"
 711                         elif test -n "$must_die_on_failure"
 712                         then
 713                                 die_with_status 2 "$die_msg"
 714                         else
 715                                 err="${err};$die_msg"
 716                                 continue
 717                         fi
 718                 fi
 719
 720                 if test -n "$recursive"
 721                 then
 722                         (
 723                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 724                                 wt_prefix=
 725                                 sanitize_submodule_env
 726                                 cd "$sm_path" &&
 727                                 eval cmd_update
 728                         )
 729                         res=$?
 730                         if test $res -gt 0
 731                         then
 732                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 733                                 if test $res -ne 2
 734                                 then
 735                                         err="${err};$die_msg"
 736                                         continue
 737                                 else
 738                                         die_with_status $res "$die_msg"
 739                                 fi
 740                         fi
 741                 fi
 742         done
 743
 744         if test -n "$err"
 745         then
 746                 OIFS=$IFS
 747                 IFS=';'
 748                 for e in $err
 749                 do
 750                         if test -n "$e"
 751                         then
 752                                 echo >&2 "$e"
 753                         fi
 754                 done
 755                 IFS=$OIFS
 756                 exit 1
 757         fi
 758         }
 759 }
 760
 761 set_name_rev () {
 762         revname=$( (
 763                 sanitize_submodule_env
 764                 cd "$1" && {
 765                         git describe "$2" 2>/dev/null ||
 766                         git describe --tags "$2" 2>/dev/null ||
 767                         git describe --contains "$2" 2>/dev/null ||
 768                         git describe --all --always "$2"
 769                 }
 770         ) )
 771         test -z "$revname" || revname=" ($revname)"
 772 }
 773 #
 774 # Show commit summary for submodules in index or working tree
 775 #
 776 # If '--cached' is given, show summary between index and given commit,
 777 # or between working tree and given commit
 778 #
 779 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 780 #
 781 cmd_summary() {
 782         summary_limit=-1
 783         for_status=
 784         diff_cmd=diff-index
 785
 786         # parse $args after "submodule ... summary".
 787         while test $# -ne 0
 788         do
 789                 case "$1" in
 790                 --cached)
 791                         cached="$1"
 792                         ;;
 793                 --files)
 794                         files="$1"
 795                         ;;
 796                 --for-status)
 797                         for_status="$1"
 798                         ;;
 799                 -n|--summary-limit)
 800                         summary_limit="$2"
 801                         isnumber "$summary_limit" || usage
 802                         shift
 803                         ;;
 804                 --summary-limit=*)
 805                         summary_limit="${1#--summary-limit=}"
 806                         isnumber "$summary_limit" || usage
 807                         ;;
 808                 --)
 809                         shift
 810                         break
 811                         ;;
 812                 -*)
 813                         usage
 814                         ;;
 815                 *)
 816                         break
 817                         ;;
 818                 esac
 819                 shift
 820         done
 821
 822         test $summary_limit = 0 && return
 823
 824         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 825         then
 826                 head=$rev
 827                 test $# = 0 || shift
 828         elif test -z "$1" || test "$1" = "HEAD"
 829         then
 830                 # before the first commit: compare with an empty tree
 831                 head=$(git hash-object -w -t tree --stdin </dev/null)
 832                 test -z "$1" || shift
 833         else
 834                 head="HEAD"
 835         fi
 836
 837         if [ -n "$files" ]
 838         then
 839                 test -n "$cached" &&
 840                 die "$(gettext "The --cached option cannot be used with the --files option")"
 841                 diff_cmd=diff-files
 842                 head=
 843         fi
 844
 845         cd_to_toplevel
 846         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 847         # Get modified modules cared by user
 848         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 849                 sane_egrep '^:([0-7]* )?160000' |
 850                 while read mod_src mod_dst sha1_src sha1_dst status sm_path
 851                 do
 852                         # Always show modules deleted or type-changed (blob<->module)
 853                         if test "$status" = D || test "$status" = T
 854                         then
 855                                 printf '%s\n' "$sm_path"
 856                                 continue
 857                         fi
 858                         # Respect the ignore setting for --for-status.
 859                         if test -n "$for_status"
 860                         then
 861                                 name=$(git submodule--helper name "$sm_path")
 862                                 ignore_config=$(get_submodule_config "$name" ignore none)
 863                                 test $status != A && test $ignore_config = all && continue
 864                         fi
 865                         # Also show added or modified modules which are checked out
 866                         GIT_DIR="$sm_path/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 867                         printf '%s\n' "$sm_path"
 868                 done
 869         )
 870
 871         test -z "$modules" && return
 872
 873         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 874         sane_egrep '^:([0-7]* )?160000' |
 875         cut -c2- |
 876         while read mod_src mod_dst sha1_src sha1_dst status name
 877         do
 878                 if test -z "$cached" &&
 879                         test $sha1_dst = 0000000000000000000000000000000000000000
 880                 then
 881                         case "$mod_dst" in
 882                         160000)
 883                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 884                                 ;;
 885                         100644 | 100755 | 120000)
 886                                 sha1_dst=$(git hash-object $name)
 887                                 ;;
 888                         000000)
 889                                 ;; # removed
 890                         *)
 891                                 # unexpected type
 892                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 893                                 continue ;;
 894                         esac
 895                 fi
 896                 missing_src=
 897                 missing_dst=
 898
 899                 test $mod_src = 160000 &&
 900                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 901                 missing_src=t
 902
 903                 test $mod_dst = 160000 &&
 904                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 905                 missing_dst=t
 906
 907                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 908
 909                 total_commits=
 910                 case "$missing_src,$missing_dst" in
 911                 t,)
 912                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 913                         ;;
 914                 ,t)
 915                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 916                         ;;
 917                 t,t)
 918                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 919                         ;;
 920                 *)
 921                         errmsg=
 922                         total_commits=$(
 923                         if test $mod_src = 160000 && test $mod_dst = 160000
 924                         then
 925                                 range="$sha1_src...$sha1_dst"
 926                         elif test $mod_src = 160000
 927                         then
 928                                 range=$sha1_src
 929                         else
 930                                 range=$sha1_dst
 931                         fi
 932                         GIT_DIR="$name/.git" \
 933                         git rev-list --first-parent $range -- | wc -l
 934                         )
 935                         total_commits=" ($(($total_commits + 0)))"
 936                         ;;
 937                 esac
 938
 939                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 940                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 941                 if test $status = T
 942                 then
 943                         blob="$(gettext "blob")"
 944                         submodule="$(gettext "submodule")"
 945                         if test $mod_dst = 160000
 946                         then
 947                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 948                         else
 949                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 950                         fi
 951                 else
 952                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 953                 fi
 954                 if test -n "$errmsg"
 955                 then
 956                         # Don't give error msg for modification whose dst is not submodule
 957                         # i.e. deleted or changed to blob
 958                         test $mod_dst = 160000 && echo "$errmsg"
 959                 else
 960                         if test $mod_src = 160000 && test $mod_dst = 160000
 961                         then
 962                                 limit=
 963                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 964                                 GIT_DIR="$name/.git" \
 965                                 git log $limit --pretty='format:  %m %s' \
 966                                 --first-parent $sha1_src...$sha1_dst
 967                         elif test $mod_dst = 160000
 968                         then
 969                                 GIT_DIR="$name/.git" \
 970                                 git log --pretty='format:  > %s' -1 $sha1_dst
 971                         else
 972                                 GIT_DIR="$name/.git" \
 973                                 git log --pretty='format:  < %s' -1 $sha1_src
 974                         fi
 975                         echo
 976                 fi
 977                 echo
 978         done
 979 }
 980 #
 981 # List all submodules, prefixed with:
 982 #  - submodule not initialized
 983 #  + different revision checked out
 984 #
 985 # If --cached was specified the revision in the index will be printed
 986 # instead of the currently checked out revision.
 987 #
 988 # $@ = requested paths (default to all)
 989 #
 990 cmd_status()
 991 {
 992         # parse $args after "submodule ... status".
 993         while test $# -ne 0
 994         do
 995                 case "$1" in
 996                 -q|--quiet)
 997                         GIT_QUIET=1
 998                         ;;
 999                 --cached)
1000                         cached=1
1001                         ;;
1002                 --recursive)
1003                         recursive=1
1004                         ;;
1005                 --)
1006                         shift
1007                         break
1008                         ;;
1009                 -*)
1010                         usage
1011                         ;;
1012                 *)
1013                         break
1014                         ;;
1015                 esac
1016                 shift
1017         done
1018
1019         {
1020                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1021                 echo "#unmatched" $?
1022         } |
1023         while read mode sha1 stage sm_path
1024         do
1025                 die_if_unmatched "$mode" "$sha1"
1026                 name=$(git submodule--helper name "$sm_path") || exit
1027                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1028                 if test "$stage" = U
1029                 then
1030                         say "U$sha1 $displaypath"
1031                         continue
1032                 fi
1033                 if ! git submodule--helper is-active "$sm_path" ||
1034                 {
1035                         ! test -d "$sm_path"/.git &&
1036                         ! test -f "$sm_path"/.git
1037                 }
1038                 then
1039                         say "-$sha1 $displaypath"
1040                         continue;
1041                 fi
1042                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1043                 then
1044                         set_name_rev "$sm_path" "$sha1"
1045                         say " $sha1 $displaypath$revname"
1046                 else
1047                         if test -z "$cached"
1048                         then
1049                                 sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1050                         fi
1051                         set_name_rev "$sm_path" "$sha1"
1052                         say "+$sha1 $displaypath$revname"
1053                 fi
1054
1055                 if test -n "$recursive"
1056                 then
1057                         (
1058                                 prefix="$displaypath/"
1059                                 sanitize_submodule_env
1060                                 wt_prefix=
1061                                 cd "$sm_path" &&
1062                                 eval cmd_status
1063                         ) ||
1064                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1065                 fi
1066         done
1067 }
1068 #
1069 # Sync remote urls for submodules
1070 # This makes the value for remote.$remote.url match the value
1071 # specified in .gitmodules.
1072 #
1073 cmd_sync()
1074 {
1075         while test $# -ne 0
1076         do
1077                 case "$1" in
1078                 -q|--quiet)
1079                         GIT_QUIET=1
1080                         shift
1081                         ;;
1082                 --recursive)
1083                         recursive=1
1084                         shift
1085                         ;;
1086                 --)
1087                         shift
1088                         break
1089                         ;;
1090                 -*)
1091                         usage
1092                         ;;
1093                 *)
1094                         break
1095                         ;;
1096                 esac
1097         done
1098         cd_to_toplevel
1099         {
1100                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1101                 echo "#unmatched" $?
1102         } |
1103         while read mode sha1 stage sm_path
1104         do
1105                 die_if_unmatched "$mode" "$sha1"
1106
1107                 # skip inactive submodules
1108                 if ! git submodule--helper is-active "$sm_path"
1109                 then
1110                         continue
1111                 fi
1112
1113                 name=$(git submodule--helper name "$sm_path")
1114                 url=$(git config -f .gitmodules --get submodule."$name".url)
1115
1116                 # Possibly a url relative to parent
1117                 case "$url" in
1118                 ./*|../*)
1119                         # rewrite foo/bar as ../.. to find path from
1120                         # submodule work tree to superproject work tree
1121                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1122                         # guarantee a trailing /
1123                         up_path=${up_path%/}/ &&
1124                         # path from submodule work tree to submodule origin repo
1125                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1126                         # path from superproject work tree to submodule origin repo
1127                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1128                         ;;
1129                 *)
1130                         sub_origin_url="$url"
1131                         super_config_url="$url"
1132                         ;;
1133                 esac
1134
1135                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1136                 say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1137                 git config submodule."$name".url "$super_config_url"
1138
1139                 if test -e "$sm_path"/.git
1140                 then
1141                 (
1142                         sanitize_submodule_env
1143                         cd "$sm_path"
1144                         remote=$(get_default_remote)
1145                         git config remote."$remote".url "$sub_origin_url"
1146
1147                         if test -n "$recursive"
1148                         then
1149                                 prefix="$prefix$sm_path/"
1150                                 eval cmd_sync
1151                         fi
1152                 )
1153                 fi
1154         done
1155 }
1156
1157 cmd_absorbgitdirs()
1158 {
1159         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1160 }
1161
1162 # This loop parses the command line arguments to find the
1163 # subcommand name to dispatch.  Parsing of the subcommand specific
1164 # options are primarily done by the subcommand implementations.
1165 # Subcommand specific options such as --branch and --cached are
1166 # parsed here as well, for backward compatibility.
1167
1168 while test $# != 0 && test -z "$command"
1169 do
1170         case "$1" in
1171         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1172                 command=$1
1173                 ;;
1174         -q|--quiet)
1175                 GIT_QUIET=1
1176                 ;;
1177         -b|--branch)
1178                 case "$2" in
1179                 '')
1180                         usage
1181                         ;;
1182                 esac
1183                 branch="$2"; shift
1184                 ;;
1185         --cached)
1186                 cached="$1"
1187                 ;;
1188         --)
1189                 break
1190                 ;;
1191         -*)
1192                 usage
1193                 ;;
1194         *)
1195                 break
1196                 ;;
1197         esac
1198         shift
1199 done
1200
1201 # No command word defaults to "status"
1202 if test -z "$command"
1203 then
1204     if test $# = 0
1205     then
1206         command=status
1207     else
1208         usage
1209     fi
1210 fi
1211
1212 # "-b branch" is accepted only by "add"
1213 if test -n "$branch" && test "$command" != add
1214 then
1215         usage
1216 fi
1217
1218 # "--cached" is accepted only by "status" and "summary"
1219 if test -n "$cached" && test "$command" != status && test "$command" != summary
1220 then
1221         usage
1222 fi
1223
1224 "cmd_$command" "$@"