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