git.oblomov.eu Git - git/blob - git-submodule.sh

   1 #!/bin/sh
   2 #
   3 # git-submodule.sh: add, init, update or list git submodules
   4 #
   5 # Copyright (c) 2007 Lars Hjemli
   6
   7 dashless=$(basename "$0" | sed -e 's/-/ /')
   8 USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
  13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  14    or: $dashless [--quiet] foreach [--recursive] <command>
  15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  16    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  17 OPTIONS_SPEC=
  18 SUBDIRECTORY_OK=Yes
  19 . git-sh-setup
  20 . git-parse-remote
  21 require_work_tree
  22 wt_prefix=$(git rev-parse --show-prefix)
  23 cd_to_toplevel
  24
  25 # Tell the rest of git that any URLs we get don't come
  26 # directly from the user, so it can apply policy as appropriate.
  27 GIT_PROTOCOL_FROM_USER=0
  28 export GIT_PROTOCOL_FROM_USER
  29
  30 command=
  31 branch=
  32 force=
  33 reference=
  34 cached=
  35 recursive=
  36 init=
  37 files=
  38 remote=
  39 nofetch=
  40 update=
  41 prefix=
  42 custom_name=
  43 depth=
  44 progress=
  45 dissociate=
  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 submodule--helper config 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 # Given a full hex object ID, is this the zero OID?
  86 is_zero_oid () {
  87         echo "$1" | sane_egrep '^0+$' >/dev/null 2>&1
  88 }
  89
  90 # Sanitize the local git environment for use within a submodule. We
  91 # can't simply use clear_local_git_env since we want to preserve some
  92 # of the settings from GIT_CONFIG_PARAMETERS.
  93 sanitize_submodule_env()
  94 {
  95         save_config=$GIT_CONFIG_PARAMETERS
  96         clear_local_git_env
  97         GIT_CONFIG_PARAMETERS=$save_config
  98         export GIT_CONFIG_PARAMETERS
  99 }
 100
 101 #
 102 # Add a new submodule to the working tree, .gitmodules and the index
 103 #
 104 # $@ = repo path
 105 #
 106 # optional branch is stored in global branch variable
 107 #
 108 cmd_add()
 109 {
 110         # parse $args after "submodule ... add".
 111         reference_path=
 112         while test $# -ne 0
 113         do
 114                 case "$1" in
 115                 -b | --branch)
 116                         case "$2" in '') usage ;; esac
 117                         branch=$2
 118                         shift
 119                         ;;
 120                 -f | --force)
 121                         force=$1
 122                         ;;
 123                 -q|--quiet)
 124                         GIT_QUIET=1
 125                         ;;
 126                 --progress)
 127                         progress=1
 128                         ;;
 129                 --reference)
 130                         case "$2" in '') usage ;; esac
 131                         reference_path=$2
 132                         shift
 133                         ;;
 134                 --reference=*)
 135                         reference_path="${1#--reference=}"
 136                         ;;
 137                 --dissociate)
 138                         dissociate=1
 139                         ;;
 140                 --name)
 141                         case "$2" in '') usage ;; esac
 142                         custom_name=$2
 143                         shift
 144                         ;;
 145                 --depth)
 146                         case "$2" in '') usage ;; esac
 147                         depth="--depth=$2"
 148                         shift
 149                         ;;
 150                 --depth=*)
 151                         depth=$1
 152                         ;;
 153                 --)
 154                         shift
 155                         break
 156                         ;;
 157                 -*)
 158                         usage
 159                         ;;
 160                 *)
 161                         break
 162                         ;;
 163                 esac
 164                 shift
 165         done
 166
 167         if ! git submodule--helper config --check-writeable >/dev/null 2>&1
 168         then
 169                  die "$(eval_gettext "please make sure that the .gitmodules file is in the working tree")"
 170         fi
 171
 172         if test -n "$reference_path"
 173         then
 174                 is_absolute_path "$reference_path" ||
 175                 reference_path="$wt_prefix$reference_path"
 176
 177                 reference="--reference=$reference_path"
 178         fi
 179
 180         repo=$1
 181         sm_path=$2
 182
 183         if test -z "$sm_path"; then
 184                 sm_path=$(printf '%s\n' "$repo" |
 185                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 186         fi
 187
 188         if test -z "$repo" || test -z "$sm_path"; then
 189                 usage
 190         fi
 191
 192         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 193
 194         # assure repo is absolute or relative to parent
 195         case "$repo" in
 196         ./*|../*)
 197                 test -z "$wt_prefix" ||
 198                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 199
 200                 # dereference source url relative to parent's url
 201                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 202                 ;;
 203         *:*|/*)
 204                 # absolute url
 205                 realrepo=$repo
 206                 ;;
 207         *)
 208                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 209         ;;
 210         esac
 211
 212         # normalize path:
 213         # multiple //; leading ./; /./; /../; trailing /
 214         sm_path=$(printf '%s/\n' "$sm_path" |
 215                 sed -e '
 216                         s|//*|/|g
 217                         s|^\(\./\)*||
 218                         s|/\(\./\)*|/|g
 219                         :start
 220                         s|\([^/]*\)/\.\./||
 221                         tstart
 222                         s|/*$||
 223                 ')
 224         if test -z "$force"
 225         then
 226                 git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 227                 die "$(eval_gettext "'\$sm_path' already exists in the index")"
 228         else
 229                 git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 230                 die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 231         fi
 232
 233         if test -d "$sm_path" &&
 234                 test -z $(git -C "$sm_path" rev-parse --show-cdup 2>/dev/null)
 235         then
 236             git -C "$sm_path" rev-parse --verify -q HEAD >/dev/null ||
 237             die "$(eval_gettext "'\$sm_path' does not have a commit checked out")"
 238         fi
 239
 240         if test -z "$force" &&
 241                 ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
 242         then
 243                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 244 \$sm_path
 245 Use -f if you really want to add it." >&2
 246                 exit 1
 247         fi
 248
 249         if test -n "$custom_name"
 250         then
 251                 sm_name="$custom_name"
 252         else
 253                 sm_name="$sm_path"
 254         fi
 255
 256         if ! git submodule--helper check-name "$sm_name"
 257         then
 258                 die "$(eval_gettext "'$sm_name' is not a valid submodule name")"
 259         fi
 260
 261         # perhaps the path exists and is already a git repo, else clone it
 262         if test -e "$sm_path"
 263         then
 264                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 265                 then
 266                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 267                 else
 268                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 269                 fi
 270
 271         else
 272                 if test -d ".git/modules/$sm_name"
 273                 then
 274                         if test -z "$force"
 275                         then
 276                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 277                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 278                                 die "$(eval_gettextln "\
 279 If you want to reuse this local git directory instead of cloning again from
 280   \$realrepo
 281 use the '--force' option. If the local git directory is not the correct repo
 282 or you are unsure what this means choose another name with the '--name' option.")"
 283                         else
 284                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 285                         fi
 286                 fi
 287                 git submodule--helper clone ${GIT_QUIET:+--quiet} ${progress:+"--progress"} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${dissociate:+"--dissociate"} ${depth:+"$depth"} || exit
 288                 (
 289                         sanitize_submodule_env
 290                         cd "$sm_path" &&
 291                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 292                         case "$branch" in
 293                         '') git checkout -f -q ;;
 294                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 295                         esac
 296                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 297         fi
 298         git config submodule."$sm_name".url "$realrepo"
 299
 300         git add --no-warn-embedded-repo $force "$sm_path" ||
 301         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 302
 303         git submodule--helper config submodule."$sm_name".path "$sm_path" &&
 304         git submodule--helper config submodule."$sm_name".url "$repo" &&
 305         if test -n "$branch"
 306         then
 307                 git submodule--helper config submodule."$sm_name".branch "$branch"
 308         fi &&
 309         git add --force .gitmodules ||
 310         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 311
 312         # NEEDSWORK: In a multi-working-tree world, this needs to be
 313         # set in the per-worktree config.
 314         if git config --get submodule.active >/dev/null
 315         then
 316                 # If the submodule being adding isn't already covered by the
 317                 # current configured pathspec, set the submodule's active flag
 318                 if ! git submodule--helper is-active "$sm_path"
 319                 then
 320                         git config submodule."$sm_name".active "true"
 321                 fi
 322         else
 323                 git config submodule."$sm_name".active "true"
 324         fi
 325 }
 326
 327 #
 328 # Execute an arbitrary command sequence in each checked out
 329 # submodule
 330 #
 331 # $@ = command to execute
 332 #
 333 cmd_foreach()
 334 {
 335         # parse $args after "submodule ... foreach".
 336         while test $# -ne 0
 337         do
 338                 case "$1" in
 339                 -q|--quiet)
 340                         GIT_QUIET=1
 341                         ;;
 342                 --recursive)
 343                         recursive=1
 344                         ;;
 345                 -*)
 346                         usage
 347                         ;;
 348                 *)
 349                         break
 350                         ;;
 351                 esac
 352                 shift
 353         done
 354
 355         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} "$@"
 356 }
 357
 358 #
 359 # Register submodules in .git/config
 360 #
 361 # $@ = requested paths (default to all)
 362 #
 363 cmd_init()
 364 {
 365         # parse $args after "submodule ... init".
 366         while test $# -ne 0
 367         do
 368                 case "$1" in
 369                 -q|--quiet)
 370                         GIT_QUIET=1
 371                         ;;
 372                 --)
 373                         shift
 374                         break
 375                         ;;
 376                 -*)
 377                         usage
 378                         ;;
 379                 *)
 380                         break
 381                         ;;
 382                 esac
 383                 shift
 384         done
 385
 386         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 387 }
 388
 389 #
 390 # Unregister submodules from .git/config and remove their work tree
 391 #
 392 cmd_deinit()
 393 {
 394         # parse $args after "submodule ... deinit".
 395         deinit_all=
 396         while test $# -ne 0
 397         do
 398                 case "$1" in
 399                 -f|--force)
 400                         force=$1
 401                         ;;
 402                 -q|--quiet)
 403                         GIT_QUIET=1
 404                         ;;
 405                 --all)
 406                         deinit_all=t
 407                         ;;
 408                 --)
 409                         shift
 410                         break
 411                         ;;
 412                 -*)
 413                         usage
 414                         ;;
 415                 *)
 416                         break
 417                         ;;
 418                 esac
 419                 shift
 420         done
 421
 422         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper deinit ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} ${force:+--force} ${deinit_all:+--all} "$@"
 423 }
 424
 425 is_tip_reachable () (
 426         sanitize_submodule_env &&
 427         cd "$1" &&
 428         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 429         test -z "$rev"
 430 )
 431
 432 fetch_in_submodule () (
 433         sanitize_submodule_env &&
 434         cd "$1" &&
 435         case "$2" in
 436         '')
 437                 git fetch ;;
 438         *)
 439                 shift
 440                 git fetch $(get_default_remote) "$@" ;;
 441         esac
 442 )
 443
 444 #
 445 # Update each submodule path to correct revision, using clone and checkout as needed
 446 #
 447 # $@ = requested paths (default to all)
 448 #
 449 cmd_update()
 450 {
 451         # parse $args after "submodule ... update".
 452         while test $# -ne 0
 453         do
 454                 case "$1" in
 455                 -q|--quiet)
 456                         GIT_QUIET=1
 457                         ;;
 458                 -v)
 459                         GIT_QUIET=0
 460                         ;;
 461                 --progress)
 462                         progress=1
 463                         ;;
 464                 -i|--init)
 465                         init=1
 466                         ;;
 467                 --remote)
 468                         remote=1
 469                         ;;
 470                 -N|--no-fetch)
 471                         nofetch=1
 472                         ;;
 473                 -f|--force)
 474                         force=$1
 475                         ;;
 476                 -r|--rebase)
 477                         update="rebase"
 478                         ;;
 479                 --reference)
 480                         case "$2" in '') usage ;; esac
 481                         reference="--reference=$2"
 482                         shift
 483                         ;;
 484                 --reference=*)
 485                         reference="$1"
 486                         ;;
 487                 --dissociate)
 488                         dissociate=1
 489                         ;;
 490                 -m|--merge)
 491                         update="merge"
 492                         ;;
 493                 --recursive)
 494                         recursive=1
 495                         ;;
 496                 --checkout)
 497                         update="checkout"
 498                         ;;
 499                 --recommend-shallow)
 500                         recommend_shallow="--recommend-shallow"
 501                         ;;
 502                 --no-recommend-shallow)
 503                         recommend_shallow="--no-recommend-shallow"
 504                         ;;
 505                 --depth)
 506                         case "$2" in '') usage ;; esac
 507                         depth="--depth=$2"
 508                         shift
 509                         ;;
 510                 --depth=*)
 511                         depth=$1
 512                         ;;
 513                 -j|--jobs)
 514                         case "$2" in '') usage ;; esac
 515                         jobs="--jobs=$2"
 516                         shift
 517                         ;;
 518                 --jobs=*)
 519                         jobs=$1
 520                         ;;
 521                 --)
 522                         shift
 523                         break
 524                         ;;
 525                 -*)
 526                         usage
 527                         ;;
 528                 *)
 529                         break
 530                         ;;
 531                 esac
 532                 shift
 533         done
 534
 535         if test -n "$init"
 536         then
 537                 cmd_init "--" "$@" || return
 538         fi
 539
 540         {
 541         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 542                 ${progress:+"--progress"} \
 543                 ${wt_prefix:+--prefix "$wt_prefix"} \
 544                 ${prefix:+--recursive-prefix "$prefix"} \
 545                 ${update:+--update "$update"} \
 546                 ${reference:+"$reference"} \
 547                 ${dissociate:+"--dissociate"} \
 548                 ${depth:+--depth "$depth"} \
 549                 $recommend_shallow \
 550                 $jobs \
 551                 "$@" || echo "#unmatched" $?
 552         } | {
 553         err=
 554         while read -r quickabort sha1 just_cloned sm_path
 555         do
 556                 die_if_unmatched "$quickabort" "$sha1"
 557
 558                 git submodule--helper ensure-core-worktree "$sm_path" || exit 1
 559
 560                 update_module=$(git submodule--helper update-module-mode $just_cloned "$sm_path" $update)
 561
 562                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 563
 564                 if test $just_cloned -eq 1
 565                 then
 566                         subsha1=
 567                 else
 568                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 569                                 git rev-parse --verify HEAD) ||
 570                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 571                 fi
 572
 573                 if test -n "$remote"
 574                 then
 575                         branch=$(git submodule--helper remote-branch "$sm_path")
 576                         if test -z "$nofetch"
 577                         then
 578                                 # Fetch remote before determining tracking $sha1
 579                                 fetch_in_submodule "$sm_path" $depth ||
 580                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 581                         fi
 582                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 583                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 584                                 git rev-parse --verify "${remote_name}/${branch}") ||
 585                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 586                 fi
 587
 588                 if test "$subsha1" != "$sha1" || test -n "$force"
 589                 then
 590                         subforce=$force
 591                         # If we don't already have a -f flag and the submodule has never been checked out
 592                         if test -z "$subsha1" && test -z "$force"
 593                         then
 594                                 subforce="-f"
 595                         fi
 596
 597                         if test -z "$nofetch"
 598                         then
 599                                 # Run fetch only if $sha1 isn't present or it
 600                                 # is not reachable from a ref.
 601                                 is_tip_reachable "$sm_path" "$sha1" ||
 602                                 fetch_in_submodule "$sm_path" $depth ||
 603                                 say "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 604
 605                                 # Now we tried the usual fetch, but $sha1 may
 606                                 # not be reachable from any of the refs
 607                                 is_tip_reachable "$sm_path" "$sha1" ||
 608                                 fetch_in_submodule "$sm_path" $depth "$sha1" ||
 609                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 610                         fi
 611
 612                         must_die_on_failure=
 613                         case "$update_module" in
 614                         checkout)
 615                                 command="git checkout $subforce -q"
 616                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 617                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 618                                 ;;
 619                         rebase)
 620                                 command="git rebase"
 621                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 622                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 623                                 must_die_on_failure=yes
 624                                 ;;
 625                         merge)
 626                                 command="git merge"
 627                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 628                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 629                                 must_die_on_failure=yes
 630                                 ;;
 631                         !*)
 632                                 command="${update_module#!}"
 633                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 634                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 635                                 must_die_on_failure=yes
 636                                 ;;
 637                         *)
 638                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule path '$path'")"
 639                         esac
 640
 641                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 642                         then
 643                                 say "$say_msg"
 644                         elif test -n "$must_die_on_failure"
 645                         then
 646                                 die_with_status 2 "$die_msg"
 647                         else
 648                                 err="${err};$die_msg"
 649                                 continue
 650                         fi
 651                 fi
 652
 653                 if test -n "$recursive"
 654                 then
 655                         (
 656                                 prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 657                                 wt_prefix=
 658                                 sanitize_submodule_env
 659                                 cd "$sm_path" &&
 660                                 eval cmd_update
 661                         )
 662                         res=$?
 663                         if test $res -gt 0
 664                         then
 665                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 666                                 if test $res -ne 2
 667                                 then
 668                                         err="${err};$die_msg"
 669                                         continue
 670                                 else
 671                                         die_with_status $res "$die_msg"
 672                                 fi
 673                         fi
 674                 fi
 675         done
 676
 677         if test -n "$err"
 678         then
 679                 OIFS=$IFS
 680                 IFS=';'
 681                 for e in $err
 682                 do
 683                         if test -n "$e"
 684                         then
 685                                 echo >&2 "$e"
 686                         fi
 687                 done
 688                 IFS=$OIFS
 689                 exit 1
 690         fi
 691         }
 692 }
 693
 694 #
 695 # Show commit summary for submodules in index or working tree
 696 #
 697 # If '--cached' is given, show summary between index and given commit,
 698 # or between working tree and given commit
 699 #
 700 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 701 #
 702 cmd_summary() {
 703         summary_limit=-1
 704         for_status=
 705         diff_cmd=diff-index
 706
 707         # parse $args after "submodule ... summary".
 708         while test $# -ne 0
 709         do
 710                 case "$1" in
 711                 --cached)
 712                         cached="$1"
 713                         ;;
 714                 --files)
 715                         files="$1"
 716                         ;;
 717                 --for-status)
 718                         for_status="$1"
 719                         ;;
 720                 -n|--summary-limit)
 721                         summary_limit="$2"
 722                         isnumber "$summary_limit" || usage
 723                         shift
 724                         ;;
 725                 --summary-limit=*)
 726                         summary_limit="${1#--summary-limit=}"
 727                         isnumber "$summary_limit" || usage
 728                         ;;
 729                 --)
 730                         shift
 731                         break
 732                         ;;
 733                 -*)
 734                         usage
 735                         ;;
 736                 *)
 737                         break
 738                         ;;
 739                 esac
 740                 shift
 741         done
 742
 743         test $summary_limit = 0 && return
 744
 745         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 746         then
 747                 head=$rev
 748                 test $# = 0 || shift
 749         elif test -z "$1" || test "$1" = "HEAD"
 750         then
 751                 # before the first commit: compare with an empty tree
 752                 head=$(git hash-object -w -t tree --stdin </dev/null)
 753                 test -z "$1" || shift
 754         else
 755                 head="HEAD"
 756         fi
 757
 758         if [ -n "$files" ]
 759         then
 760                 test -n "$cached" &&
 761                 die "$(gettext "The --cached option cannot be used with the --files option")"
 762                 diff_cmd=diff-files
 763                 head=
 764         fi
 765
 766         cd_to_toplevel
 767         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 768         # Get modified modules cared by user
 769         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 770                 sane_egrep '^:([0-7]* )?160000' |
 771                 while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
 772                 do
 773                         # Always show modules deleted or type-changed (blob<->module)
 774                         if test "$status" = D || test "$status" = T
 775                         then
 776                                 printf '%s\n' "$sm_path"
 777                                 continue
 778                         fi
 779                         # Respect the ignore setting for --for-status.
 780                         if test -n "$for_status"
 781                         then
 782                                 name=$(git submodule--helper name "$sm_path")
 783                                 ignore_config=$(get_submodule_config "$name" ignore none)
 784                                 test $status != A && test $ignore_config = all && continue
 785                         fi
 786                         # Also show added or modified modules which are checked out
 787                         GIT_DIR="$sm_path/.git" git rev-parse --git-dir >/dev/null 2>&1 &&
 788                         printf '%s\n' "$sm_path"
 789                 done
 790         )
 791
 792         test -z "$modules" && return
 793
 794         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 795         sane_egrep '^:([0-7]* )?160000' |
 796         cut -c2- |
 797         while read -r mod_src mod_dst sha1_src sha1_dst status name
 798         do
 799                 if test -z "$cached" &&
 800                         is_zero_oid $sha1_dst
 801                 then
 802                         case "$mod_dst" in
 803                         160000)
 804                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 805                                 ;;
 806                         100644 | 100755 | 120000)
 807                                 sha1_dst=$(git hash-object $name)
 808                                 ;;
 809                         000000)
 810                                 ;; # removed
 811                         *)
 812                                 # unexpected type
 813                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 814                                 continue ;;
 815                         esac
 816                 fi
 817                 missing_src=
 818                 missing_dst=
 819
 820                 test $mod_src = 160000 &&
 821                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_src^0 >/dev/null &&
 822                 missing_src=t
 823
 824                 test $mod_dst = 160000 &&
 825                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 826                 missing_dst=t
 827
 828                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 829
 830                 total_commits=
 831                 case "$missing_src,$missing_dst" in
 832                 t,)
 833                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 834                         ;;
 835                 ,t)
 836                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 837                         ;;
 838                 t,t)
 839                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 840                         ;;
 841                 *)
 842                         errmsg=
 843                         total_commits=$(
 844                         if test $mod_src = 160000 && test $mod_dst = 160000
 845                         then
 846                                 range="$sha1_src...$sha1_dst"
 847                         elif test $mod_src = 160000
 848                         then
 849                                 range=$sha1_src
 850                         else
 851                                 range=$sha1_dst
 852                         fi
 853                         GIT_DIR="$name/.git" \
 854                         git rev-list --first-parent $range -- | wc -l
 855                         )
 856                         total_commits=" ($(($total_commits + 0)))"
 857                         ;;
 858                 esac
 859
 860                 sha1_abbr_src=$(GIT_DIR="$name/.git" git rev-parse --short $sha1_src 2>/dev/null ||
 861                         echo $sha1_src | cut -c1-7)
 862                 sha1_abbr_dst=$(GIT_DIR="$name/.git" git rev-parse --short $sha1_dst 2>/dev/null ||
 863                         echo $sha1_dst | cut -c1-7)
 864
 865                 if test $status = T
 866                 then
 867                         blob="$(gettext "blob")"
 868                         submodule="$(gettext "submodule")"
 869                         if test $mod_dst = 160000
 870                         then
 871                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 872                         else
 873                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 874                         fi
 875                 else
 876                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 877                 fi
 878                 if test -n "$errmsg"
 879                 then
 880                         # Don't give error msg for modification whose dst is not submodule
 881                         # i.e. deleted or changed to blob
 882                         test $mod_dst = 160000 && echo "$errmsg"
 883                 else
 884                         if test $mod_src = 160000 && test $mod_dst = 160000
 885                         then
 886                                 limit=
 887                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 888                                 GIT_DIR="$name/.git" \
 889                                 git log $limit --pretty='format:  %m %s' \
 890                                 --first-parent $sha1_src...$sha1_dst
 891                         elif test $mod_dst = 160000
 892                         then
 893                                 GIT_DIR="$name/.git" \
 894                                 git log --pretty='format:  > %s' -1 $sha1_dst
 895                         else
 896                                 GIT_DIR="$name/.git" \
 897                                 git log --pretty='format:  < %s' -1 $sha1_src
 898                         fi
 899                         echo
 900                 fi
 901                 echo
 902         done
 903 }
 904 #
 905 # List all submodules, prefixed with:
 906 #  - submodule not initialized
 907 #  + different revision checked out
 908 #
 909 # If --cached was specified the revision in the index will be printed
 910 # instead of the currently checked out revision.
 911 #
 912 # $@ = requested paths (default to all)
 913 #
 914 cmd_status()
 915 {
 916         # parse $args after "submodule ... status".
 917         while test $# -ne 0
 918         do
 919                 case "$1" in
 920                 -q|--quiet)
 921                         GIT_QUIET=1
 922                         ;;
 923                 --cached)
 924                         cached=1
 925                         ;;
 926                 --recursive)
 927                         recursive=1
 928                         ;;
 929                 --)
 930                         shift
 931                         break
 932                         ;;
 933                 -*)
 934                         usage
 935                         ;;
 936                 *)
 937                         break
 938                         ;;
 939                 esac
 940                 shift
 941         done
 942
 943         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} "$@"
 944 }
 945 #
 946 # Sync remote urls for submodules
 947 # This makes the value for remote.$remote.url match the value
 948 # specified in .gitmodules.
 949 #
 950 cmd_sync()
 951 {
 952         while test $# -ne 0
 953         do
 954                 case "$1" in
 955                 -q|--quiet)
 956                         GIT_QUIET=1
 957                         shift
 958                         ;;
 959                 --recursive)
 960                         recursive=1
 961                         shift
 962                         ;;
 963                 --)
 964                         shift
 965                         break
 966                         ;;
 967                 -*)
 968                         usage
 969                         ;;
 970                 *)
 971                         break
 972                         ;;
 973                 esac
 974         done
 975
 976         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper sync ${GIT_QUIET:+--quiet} ${recursive:+--recursive} "$@"
 977 }
 978
 979 cmd_absorbgitdirs()
 980 {
 981         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
 982 }
 983
 984 # This loop parses the command line arguments to find the
 985 # subcommand name to dispatch.  Parsing of the subcommand specific
 986 # options are primarily done by the subcommand implementations.
 987 # Subcommand specific options such as --branch and --cached are
 988 # parsed here as well, for backward compatibility.
 989
 990 while test $# != 0 && test -z "$command"
 991 do
 992         case "$1" in
 993         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
 994                 command=$1
 995                 ;;
 996         -q|--quiet)
 997                 GIT_QUIET=1
 998                 ;;
 999         -b|--branch)
1000                 case "$2" in
1001                 '')
1002                         usage
1003                         ;;
1004                 esac
1005                 branch="$2"; shift
1006                 ;;
1007         --cached)
1008                 cached="$1"
1009                 ;;
1010         --)
1011                 break
1012                 ;;
1013         -*)
1014                 usage
1015                 ;;
1016         *)
1017                 break
1018                 ;;
1019         esac
1020         shift
1021 done
1022
1023 # No command word defaults to "status"
1024 if test -z "$command"
1025 then
1026     if test $# = 0
1027     then
1028         command=status
1029     else
1030         usage
1031     fi
1032 fi
1033
1034 # "-b branch" is accepted only by "add"
1035 if test -n "$branch" && test "$command" != add
1036 then
1037         usage
1038 fi
1039
1040 # "--cached" is accepted only by "status" and "summary"
1041 if test -n "$cached" && test "$command" != status && test "$command" != summary
1042 then
1043         usage
1044 fi
1045
1046 "cmd_$command" "$@"