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

   1 #!/bin/sh
   2 #
   3 # git-submodule.sh: add, init, update or list git submodules
   4 #
   5 # Copyright (c) 2007 Lars Hjemli
   6
   7 dashless=$(basename "$0" | sed -e 's/-/ /')
   8 USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
   9    or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10    or: $dashless [--quiet] init [--] [<path>...]
  11    or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  12    or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
  13    or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  14    or: $dashless [--quiet] foreach [--recursive] <command>
  15    or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  16    or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  17 OPTIONS_SPEC=
  18 SUBDIRECTORY_OK=Yes
  19 . git-sh-setup
  20 . git-parse-remote
  21 require_work_tree
  22 wt_prefix=$(git rev-parse --show-prefix)
  23 cd_to_toplevel
  24
  25 # Tell the rest of git that any URLs we get don't come
  26 # directly from the user, so it can apply policy as appropriate.
  27 GIT_PROTOCOL_FROM_USER=0
  28 export GIT_PROTOCOL_FROM_USER
  29
  30 command=
  31 branch=
  32 force=
  33 reference=
  34 cached=
  35 recursive=
  36 init=
  37 files=
  38 remote=
  39 nofetch=
  40 update=
  41 prefix=
  42 custom_name=
  43 depth=
  44 progress=
  45
  46 die_if_unmatched ()
  47 {
  48         if test "$1" = "#unmatched"
  49         then
  50                 exit ${2:-1}
  51         fi
  52 }
  53
  54 #
  55 # Print a submodule configuration setting
  56 #
  57 # $1 = submodule name
  58 # $2 = option name
  59 # $3 = default value
  60 #
  61 # Checks in the usual git-config places first (for overrides),
  62 # otherwise it falls back on .gitmodules.  This allows you to
  63 # distribute project-wide defaults in .gitmodules, while still
  64 # customizing individual repositories if necessary.  If the option is
  65 # not in .gitmodules either, print a default value.
  66 #
  67 get_submodule_config () {
  68         name="$1"
  69         option="$2"
  70         default="$3"
  71         value=$(git config submodule."$name"."$option")
  72         if test -z "$value"
  73         then
  74                 value=$(git config -f .gitmodules submodule."$name"."$option")
  75         fi
  76         printf '%s' "${value:-$default}"
  77 }
  78
  79 isnumber()
  80 {
  81         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  82 }
  83
  84 # Sanitize the local git environment for use within a submodule. We
  85 # can't simply use clear_local_git_env since we want to preserve some
  86 # of the settings from GIT_CONFIG_PARAMETERS.
  87 sanitize_submodule_env()
  88 {
  89         save_config=$GIT_CONFIG_PARAMETERS
  90         clear_local_git_env
  91         GIT_CONFIG_PARAMETERS=$save_config
  92         export GIT_CONFIG_PARAMETERS
  93 }
  94
  95 #
  96 # Add a new submodule to the working tree, .gitmodules and the index
  97 #
  98 # $@ = repo path
  99 #
 100 # optional branch is stored in global branch variable
 101 #
 102 cmd_add()
 103 {
 104         # parse $args after "submodule ... add".
 105         reference_path=
 106         while test $# -ne 0
 107         do
 108                 case "$1" in
 109                 -b | --branch)
 110                         case "$2" in '') usage ;; esac
 111                         branch=$2
 112                         shift
 113                         ;;
 114                 -f | --force)
 115                         force=$1
 116                         ;;
 117                 -q|--quiet)
 118                         GIT_QUIET=1
 119                         ;;
 120                 --reference)
 121                         case "$2" in '') usage ;; esac
 122                         reference_path=$2
 123                         shift
 124                         ;;
 125                 --reference=*)
 126                         reference_path="${1#--reference=}"
 127                         ;;
 128                 --name)
 129                         case "$2" in '') usage ;; esac
 130                         custom_name=$2
 131                         shift
 132                         ;;
 133                 --depth)
 134                         case "$2" in '') usage ;; esac
 135                         depth="--depth=$2"
 136                         shift
 137                         ;;
 138                 --depth=*)
 139                         depth=$1
 140                         ;;
 141                 --)
 142                         shift
 143                         break
 144                         ;;
 145                 -*)
 146                         usage
 147                         ;;
 148                 *)
 149                         break
 150                         ;;
 151                 esac
 152                 shift
 153         done
 154
 155         if test -n "$reference_path"
 156         then
 157                 is_absolute_path "$reference_path" ||
 158                 reference_path="$wt_prefix$reference_path"
 159
 160                 reference="--reference=$reference_path"
 161         fi
 162
 163         repo=$1
 164         sm_path=$2
 165
 166         if test -z "$sm_path"; then
 167                 sm_path=$(printf '%s\n' "$repo" |
 168                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 169         fi
 170
 171         if test -z "$repo" || test -z "$sm_path"; then
 172                 usage
 173         fi
 174
 175         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 176
 177         # assure repo is absolute or relative to parent
 178         case "$repo" in
 179         ./*|../*)
 180                 test -z "$wt_prefix" ||
 181                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 182
 183                 # dereference source url relative to parent's url
 184                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 185                 ;;
 186         *:*|/*)
 187                 # absolute url
 188                 realrepo=$repo
 189                 ;;
 190         *)
 191                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 192         ;;
 193         esac
 194
 195         # normalize path:
 196         # multiple //; leading ./; /./; /../; trailing /
 197         sm_path=$(printf '%s/\n' "$sm_path" |
 198                 sed -e '
 199                         s|//*|/|g
 200                         s|^\(\./\)*||
 201                         s|/\(\./\)*|/|g
 202                         :start
 203                         s|\([^/]*\)/\.\./||
 204                         tstart
 205                         s|/*$||
 206                 ')
 207         if test -z "$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 "$force" &&
 217                 ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
 218         then
 219                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 220 \$sm_path
 221 Use -f if you really want to add it." >&2
 222                 exit 1
 223         fi
 224
 225         if test -n "$custom_name"
 226         then
 227                 sm_name="$custom_name"
 228         else
 229                 sm_name="$sm_path"
 230         fi
 231
 232         # perhaps the path exists and is already a git repo, else clone it
 233         if test -e "$sm_path"
 234         then
 235                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 236                 then
 237                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 238                 else
 239                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 240                 fi
 241
 242         else
 243                 if test -d ".git/modules/$sm_name"
 244                 then
 245                         if test -z "$force"
 246                         then
 247                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 248                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 249                                 die "$(eval_gettextln "\
 250 If you want to reuse this local git directory instead of cloning again from
 251   \$realrepo
 252 use the '--force' option. If the local git directory is not the correct repo
 253 or you are unsure what this means choose another name with the '--name' option.")"
 254                         else
 255                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 256                         fi
 257                 fi
 258                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 259                 (
 260                         sanitize_submodule_env
 261                         cd "$sm_path" &&
 262                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 263                         case "$branch" in
 264                         '') git checkout -f -q ;;
 265                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 266                         esac
 267                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 268         fi
 269         git config submodule."$sm_name".url "$realrepo"
 270
 271         git add --no-warn-embedded-repo $force "$sm_path" ||
 272         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 273
 274         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 275         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 276         if test -n "$branch"
 277         then
 278                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
 279         fi &&
 280         git add --force .gitmodules ||
 281         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 282
 283         # NEEDSWORK: In a multi-working-tree world, this needs to be
 284         # set in the per-worktree config.
 285         if git config --get submodule.active >/dev/null
 286         then
 287                 # If the submodule being adding isn't already covered by the
 288                 # current configured pathspec, set the submodule's active flag
 289                 if ! git submodule--helper is-active "$sm_path"
 290                 then
 291                         git config submodule."$sm_name".active "true"
 292                 fi
 293         else
 294                 git config submodule."$sm_name".active "true"
 295         fi
 296 }
 297
 298 #
 299 # Execute an arbitrary command sequence in each checked out
 300 # submodule
 301 #
 302 # $@ = command to execute
 303 #
 304 cmd_foreach()
 305 {
 306         # parse $args after "submodule ... foreach".
 307         while test $# -ne 0
 308         do
 309                 case "$1" in
 310                 -q|--quiet)
 311                         GIT_QUIET=1
 312                         ;;
 313                 --recursive)
 314                         recursive=1
 315                         ;;
 316                 -*)
 317                         usage
 318                         ;;
 319                 *)
 320                         break
 321                         ;;
 322                 esac
 323                 shift
 324         done
 325
 326         toplevel=$(pwd)
 327
 328         # dup stdin so that it can be restored when running the external
 329         # command in the subshell (and a recursive call to this function)
 330         exec 3<&0
 331
 332         {
 333                 git submodule--helper list --prefix "$wt_prefix" ||
 334                 echo "#unmatched" $?
 335         } |
 336         while read -r mode sha1 stage sm_path
 337         do
 338                 die_if_unmatched "$mode" "$sha1"
 339                 if test -e "$sm_path"/.git
 340                 then
 341                         displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 342                         say "$(eval_gettext "Entering '\$displaypath'")"
 343                         name=$(git submodule--helper name "$sm_path")
 344                         (
 345                                 prefix="$prefix$sm_path/"
 346                                 sanitize_submodule_env
 347                                 cd "$sm_path" &&
 348                                 sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
 349                                 # we make $path available to scripts ...
 350                                 path=$sm_path &&
 351                                 if test $# -eq 1
 352                                 then
 353                                         eval "$1"
 354                                 else
 355                                         "$@"
 356                                 fi &&
 357                                 if test -n "$recursive"
 358                                 then
 359                                         cmd_foreach "--recursive" "$@"
 360                                 fi
 361                         ) <&3 3<&- ||
 362                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 363                 fi
 364         done
 365 }
 366
 367 #
 368 # Register submodules in .git/config
 369 #
 370 # $@ = requested paths (default to all)
 371 #
 372 cmd_init()
 373 {
 374         # parse $args after "submodule ... init".
 375         while test $# -ne 0
 376         do
 377                 case "$1" in
 378                 -q|--quiet)
 379                         GIT_QUIET=1
 380                         ;;
 381                 --)
 382                         shift
 383                         break
 384                         ;;
 385                 -*)
 386                         usage
 387                         ;;
 388                 *)
 389                         break
 390                         ;;
 391                 esac
 392                 shift
 393         done
 394
 395         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 396 }
 397
 398 #
 399 # Unregister submodules from .git/config and remove their work tree
 400 #
 401 cmd_deinit()
 402 {
 403         # parse $args after "submodule ... deinit".
 404         deinit_all=
 405         while test $# -ne 0
 406         do
 407                 case "$1" in
 408                 -f|--force)
 409                         force=$1
 410                         ;;
 411                 -q|--quiet)
 412                         GIT_QUIET=1
 413                         ;;
 414                 --all)
 415                         deinit_all=t
 416                         ;;
 417                 --)
 418                         shift
 419                         break
 420                         ;;
 421                 -*)
 422                         usage
 423                         ;;
 424                 *)
 425                         break
 426                         ;;
 427                 esac
 428                 shift
 429         done
 430
 431         if test -n "$deinit_all" && test "$#" -ne 0
 432         then
 433                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 434                 usage
 435         fi
 436         if test $# = 0 && test -z "$deinit_all"
 437         then
 438                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 439         fi
 440
 441         {
 442                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
 443                 echo "#unmatched" $?
 444         } |
 445         while read -r mode sha1 stage sm_path
 446         do
 447                 die_if_unmatched "$mode" "$sha1"
 448                 name=$(git submodule--helper name "$sm_path") || exit
 449
 450                 displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
 451
 452                 # Remove the submodule work tree (unless the user already did it)
 453                 if test -d "$sm_path"
 454                 then
 455                         # Protect submodules containing a .git directory
 456                         if test -d "$sm_path/.git"
 457                         then
 458                                 die "$(eval_gettext "\
 459 Submodule work tree '\$displaypath' contains a .git directory
 460 (use 'rm -rf' if you really want to remove it including all of its history)")"
 461                         fi
 462
 463                         if test -z "$force"
 464                         then
 465                                 git rm -qn "$sm_path" ||
 466                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 467                         fi
 468                         rm -rf "$sm_path" &&
 469                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 470                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 471                 fi
 472
 473                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 474
 475                 # Remove the .git/config entries (unless the user already did it)
 476                 if test -n "$(git config --get-regexp submodule."$name\.")"
 477                 then
 478                         # Remove the whole section so we have a clean state when
 479                         # the user later decides to init this submodule again
 480                         url=$(git config submodule."$name".url)
 481                         git config --remove-section submodule."$name" 2>/dev/null &&
 482                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 483                 fi
 484         done
 485 }
 486
 487 is_tip_reachable () (
 488         sanitize_submodule_env &&
 489         cd "$1" &&
 490         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 491         test -z "$rev"
 492 )
 493
 494 fetch_in_submodule () (
 495         sanitize_submodule_env &&
 496         cd "$1" &&
 497         case "$2" in
 498         '')
 499                 git fetch ;;
 500         *)
 501                 shift
 502                 git fetch $(get_default_remote) "$@" ;;
 503         esac
 504 )
 505
 506 #
 507 # Update each submodule path to correct revision, using clone and checkout as needed
 508 #
 509 # $@ = requested paths (default to all)
 510 #
 511 cmd_update()
 512 {
 513         # parse $args after "submodule ... update".
 514         while test $# -ne 0
 515         do
 516                 case "$1" in
 517                 -q|--quiet)
 518                         GIT_QUIET=1
 519                         ;;
 520                 --progress)
 521                         progress="--progress"
 522                         ;;
 523                 -i|--init)
 524                         init=1
 525                         ;;
 526                 --remote)
 527                         remote=1
 528                         ;;
 529                 -N|--no-fetch)
 530                         nofetch=1
 531                         ;;
 532                 -f|--force)
 533                         force=$1
 534                         ;;
 535                 -r|--rebase)
 536                         update="rebase"
 537                         ;;
 538                 --reference)
 539                         case "$2" in '') usage ;; esac
 540                         reference="--reference=$2"
 541                         shift
 542                         ;;
 543                 --reference=*)
 544                         reference="$1"
 545                         ;;
 546                 -m|--merge)
 547                         update="merge"
 548                         ;;
 549                 --recursive)
 550                         recursive=1
 551                         ;;
 552                 --checkout)
 553                         update="checkout"
 554                         ;;
 555                 --recommend-shallow)
 556                         recommend_shallow="--recommend-shallow"
 557                         ;;
 558                 --no-recommend-shallow)
 559                         recommend_shallow="--no-recommend-shallow"
 560                         ;;
 561                 --depth)
 562                         case "$2" in '') usage ;; esac
 563                         depth="--depth=$2"
 564                         shift
 565                         ;;
 566                 --depth=*)
 567                         depth=$1
 568                         ;;
 569                 -j|--jobs)
 570                         case "$2" in '') usage ;; esac
 571                         jobs="--jobs=$2"
 572                         shift
 573                         ;;
 574                 --jobs=*)
 575                         jobs=$1
 576                         ;;
 577                 --)
 578                         shift
 579                         break
 580                         ;;
 581                 -*)
 582                         usage
 583                         ;;
 584                 *)
 585                         break
 586                         ;;
 587                 esac
 588                 shift
 589         done
 590
 591         if test -n "$init"
 592         then
 593                 cmd_init "--" "$@" || return
 594         fi
 595
 596         {
 597         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 598                 ${progress:+"$progress"} \
 599                 ${wt_prefix:+--prefix "$wt_prefix"} \
 600                 ${prefix:+--recursive-prefix "$prefix"} \
 601                 ${update:+--update "$update"} \
 602                 ${reference:+"$reference"} \
 603                 ${depth:+--depth "$depth"} \
 604                 ${recommend_shallow:+"$recommend_shallow"} \
 605                 ${jobs:+$jobs} \
 606                 "$@" || echo "#unmatched" $?
 607         } | {
 608         err=
 609         while read -r mode sha1 stage just_cloned sm_path
 610         do
 611                 die_if_unmatched "$mode" "$sha1"
 612
 613                 name=$(git submodule--helper name "$sm_path") || exit
 614                 if ! test -z "$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 #
 762 # Show commit summary for submodules in index or working tree
 763 #
 764 # If '--cached' is given, show summary between index and given commit,
 765 # or between working tree and given commit
 766 #
 767 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 768 #
 769 cmd_summary() {
 770         summary_limit=-1
 771         for_status=
 772         diff_cmd=diff-index
 773
 774         # parse $args after "submodule ... summary".
 775         while test $# -ne 0
 776         do
 777                 case "$1" in
 778                 --cached)
 779                         cached="$1"
 780                         ;;
 781                 --files)
 782                         files="$1"
 783                         ;;
 784                 --for-status)
 785                         for_status="$1"
 786                         ;;
 787                 -n|--summary-limit)
 788                         summary_limit="$2"
 789                         isnumber "$summary_limit" || usage
 790                         shift
 791                         ;;
 792                 --summary-limit=*)
 793                         summary_limit="${1#--summary-limit=}"
 794                         isnumber "$summary_limit" || usage
 795                         ;;
 796                 --)
 797                         shift
 798                         break
 799                         ;;
 800                 -*)
 801                         usage
 802                         ;;
 803                 *)
 804                         break
 805                         ;;
 806                 esac
 807                 shift
 808         done
 809
 810         test $summary_limit = 0 && return
 811
 812         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 813         then
 814                 head=$rev
 815                 test $# = 0 || shift
 816         elif test -z "$1" || test "$1" = "HEAD"
 817         then
 818                 # before the first commit: compare with an empty tree
 819                 head=$(git hash-object -w -t tree --stdin </dev/null)
 820                 test -z "$1" || shift
 821         else
 822                 head="HEAD"
 823         fi
 824
 825         if [ -n "$files" ]
 826         then
 827                 test -n "$cached" &&
 828                 die "$(gettext "The --cached option cannot be used with the --files option")"
 829                 diff_cmd=diff-files
 830                 head=
 831         fi
 832
 833         cd_to_toplevel
 834         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 835         # Get modified modules cared by user
 836         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 837                 sane_egrep '^:([0-7]* )?160000' |
 838                 while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
 839                 do
 840                         # Always show modules deleted or type-changed (blob<->module)
 841                         if test "$status" = D || test "$status" = T
 842                         then
 843                                 printf '%s\n' "$sm_path"
 844                                 continue
 845                         fi
 846                         # Respect the ignore setting for --for-status.
 847                         if test -n "$for_status"
 848                         then
 849                                 name=$(git submodule--helper name "$sm_path")
 850                                 ignore_config=$(get_submodule_config "$name" ignore none)
 851                                 test $status != A && test $ignore_config = all && continue
 852                         fi
 853                         # Also show added or modified modules which are checked out
 854                         GIT_DIR="$sm_path/.git" git rev-parse --git-dir >/dev/null 2>&1 &&
 855                         printf '%s\n' "$sm_path"
 856                 done
 857         )
 858
 859         test -z "$modules" && return
 860
 861         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 862         sane_egrep '^:([0-7]* )?160000' |
 863         cut -c2- |
 864         while read -r mod_src mod_dst sha1_src sha1_dst status name
 865         do
 866                 if test -z "$cached" &&
 867                         test $sha1_dst = 0000000000000000000000000000000000000000
 868                 then
 869                         case "$mod_dst" in
 870                         160000)
 871                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 872                                 ;;
 873                         100644 | 100755 | 120000)
 874                                 sha1_dst=$(git hash-object $name)
 875                                 ;;
 876                         000000)
 877                                 ;; # removed
 878                         *)
 879                                 # unexpected type
 880                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 881                                 continue ;;
 882                         esac
 883                 fi
 884                 missing_src=
 885                 missing_dst=
 886
 887                 test $mod_src = 160000 &&
 888                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_src^0 >/dev/null &&
 889                 missing_src=t
 890
 891                 test $mod_dst = 160000 &&
 892                 ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 893                 missing_dst=t
 894
 895                 display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 896
 897                 total_commits=
 898                 case "$missing_src,$missing_dst" in
 899                 t,)
 900                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 901                         ;;
 902                 ,t)
 903                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 904                         ;;
 905                 t,t)
 906                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 907                         ;;
 908                 *)
 909                         errmsg=
 910                         total_commits=$(
 911                         if test $mod_src = 160000 && test $mod_dst = 160000
 912                         then
 913                                 range="$sha1_src...$sha1_dst"
 914                         elif test $mod_src = 160000
 915                         then
 916                                 range=$sha1_src
 917                         else
 918                                 range=$sha1_dst
 919                         fi
 920                         GIT_DIR="$name/.git" \
 921                         git rev-list --first-parent $range -- | wc -l
 922                         )
 923                         total_commits=" ($(($total_commits + 0)))"
 924                         ;;
 925                 esac
 926
 927                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 928                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 929                 if test $status = T
 930                 then
 931                         blob="$(gettext "blob")"
 932                         submodule="$(gettext "submodule")"
 933                         if test $mod_dst = 160000
 934                         then
 935                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 936                         else
 937                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 938                         fi
 939                 else
 940                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 941                 fi
 942                 if test -n "$errmsg"
 943                 then
 944                         # Don't give error msg for modification whose dst is not submodule
 945                         # i.e. deleted or changed to blob
 946                         test $mod_dst = 160000 && echo "$errmsg"
 947                 else
 948                         if test $mod_src = 160000 && test $mod_dst = 160000
 949                         then
 950                                 limit=
 951                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 952                                 GIT_DIR="$name/.git" \
 953                                 git log $limit --pretty='format:  %m %s' \
 954                                 --first-parent $sha1_src...$sha1_dst
 955                         elif test $mod_dst = 160000
 956                         then
 957                                 GIT_DIR="$name/.git" \
 958                                 git log --pretty='format:  > %s' -1 $sha1_dst
 959                         else
 960                                 GIT_DIR="$name/.git" \
 961                                 git log --pretty='format:  < %s' -1 $sha1_src
 962                         fi
 963                         echo
 964                 fi
 965                 echo
 966         done
 967 }
 968 #
 969 # List all submodules, prefixed with:
 970 #  - submodule not initialized
 971 #  + different revision checked out
 972 #
 973 # If --cached was specified the revision in the index will be printed
 974 # instead of the currently checked out revision.
 975 #
 976 # $@ = requested paths (default to all)
 977 #
 978 cmd_status()
 979 {
 980         # parse $args after "submodule ... status".
 981         while test $# -ne 0
 982         do
 983                 case "$1" in
 984                 -q|--quiet)
 985                         GIT_QUIET=1
 986                         ;;
 987                 --cached)
 988                         cached=1
 989                         ;;
 990                 --recursive)
 991                         recursive=1
 992                         ;;
 993                 --)
 994                         shift
 995                         break
 996                         ;;
 997                 -*)
 998                         usage
 999                         ;;
1000                 *)
1001                         break
1002                         ;;
1003                 esac
1004                 shift
1005         done
1006
1007         git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper status ${GIT_QUIET:+--quiet} ${cached:+--cached} ${recursive:+--recursive} "$@"
1008 }
1009 #
1010 # Sync remote urls for submodules
1011 # This makes the value for remote.$remote.url match the value
1012 # specified in .gitmodules.
1013 #
1014 cmd_sync()
1015 {
1016         while test $# -ne 0
1017         do
1018                 case "$1" in
1019                 -q|--quiet)
1020                         GIT_QUIET=1
1021                         shift
1022                         ;;
1023                 --recursive)
1024                         recursive=1
1025                         shift
1026                         ;;
1027                 --)
1028                         shift
1029                         break
1030                         ;;
1031                 -*)
1032                         usage
1033                         ;;
1034                 *)
1035                         break
1036                         ;;
1037                 esac
1038         done
1039         cd_to_toplevel
1040         {
1041                 git submodule--helper list --prefix "$wt_prefix" "$@" ||
1042                 echo "#unmatched" $?
1043         } |
1044         while read -r mode sha1 stage sm_path
1045         do
1046                 die_if_unmatched "$mode" "$sha1"
1047
1048                 # skip inactive submodules
1049                 if ! git submodule--helper is-active "$sm_path"
1050                 then
1051                         continue
1052                 fi
1053
1054                 name=$(git submodule--helper name "$sm_path")
1055                 url=$(git config -f .gitmodules --get submodule."$name".url)
1056
1057                 # Possibly a url relative to parent
1058                 case "$url" in
1059                 ./*|../*)
1060                         # rewrite foo/bar as ../.. to find path from
1061                         # submodule work tree to superproject work tree
1062                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1063                         # guarantee a trailing /
1064                         up_path=${up_path%/}/ &&
1065                         # path from submodule work tree to submodule origin repo
1066                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1067                         # path from superproject work tree to submodule origin repo
1068                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1069                         ;;
1070                 *)
1071                         sub_origin_url="$url"
1072                         super_config_url="$url"
1073                         ;;
1074                 esac
1075
1076                 displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1077                 say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1078                 git config submodule."$name".url "$super_config_url"
1079
1080                 if test -e "$sm_path"/.git
1081                 then
1082                 (
1083                         sanitize_submodule_env
1084                         cd "$sm_path"
1085                         remote=$(get_default_remote)
1086                         git config remote."$remote".url "$sub_origin_url"
1087
1088                         if test -n "$recursive"
1089                         then
1090                                 prefix="$prefix$sm_path/"
1091                                 eval cmd_sync
1092                         fi
1093                 )
1094                 fi
1095         done
1096 }
1097
1098 cmd_absorbgitdirs()
1099 {
1100         git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1101 }
1102
1103 # This loop parses the command line arguments to find the
1104 # subcommand name to dispatch.  Parsing of the subcommand specific
1105 # options are primarily done by the subcommand implementations.
1106 # Subcommand specific options such as --branch and --cached are
1107 # parsed here as well, for backward compatibility.
1108
1109 while test $# != 0 && test -z "$command"
1110 do
1111         case "$1" in
1112         add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1113                 command=$1
1114                 ;;
1115         -q|--quiet)
1116                 GIT_QUIET=1
1117                 ;;
1118         -b|--branch)
1119                 case "$2" in
1120                 '')
1121                         usage
1122                         ;;
1123                 esac
1124                 branch="$2"; shift
1125                 ;;
1126         --cached)
1127                 cached="$1"
1128                 ;;
1129         --)
1130                 break
1131                 ;;
1132         -*)
1133                 usage
1134                 ;;
1135         *)
1136                 break
1137                 ;;
1138         esac
1139         shift
1140 done
1141
1142 # No command word defaults to "status"
1143 if test -z "$command"
1144 then
1145     if test $# = 0
1146     then
1147         command=status
1148     else
1149         usage
1150     fi
1151 fi
1152
1153 # "-b branch" is accepted only by "add"
1154 if test -n "$branch" && test "$command" != add
1155 then
1156         usage
1157 fi
1158
1159 # "--cached" is accepted only by "status" and "summary"
1160 if test -n "$cached" && test "$command" != status && test "$command" != summary
1161 then
1162         usage
1163 fi
1164
1165 "cmd_$command" "$@"