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] [--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: $dashless [--quiet] sync [--recursive] [--] [<path>...]"
  16 OPTIONS_SPEC=
  17 SUBDIRECTORY_OK=Yes
  18 . git-sh-setup
  19 . git-parse-remote
  20 require_work_tree
  21 wt_prefix=$(git rev-parse --show-prefix)
  22 cd_to_toplevel
  23
  24 # Restrict ourselves to a vanilla subset of protocols; the URLs
  25 # we get are under control of a remote repository, and we do not
  26 # want them kicking off arbitrary git-remote-* programs.
  27 #
  28 # If the user has already specified a set of allowed protocols,
  29 # we assume they know what they're doing and use that instead.
  30 : ${GIT_ALLOW_PROTOCOL=file:git:http:https:ssh}
  31 export GIT_ALLOW_PROTOCOL
  32
  33 command=
  34 branch=
  35 force=
  36 reference=
  37 cached=
  38 recursive=
  39 init=
  40 files=
  41 remote=
  42 nofetch=
  43 update=
  44 prefix=
  45 custom_name=
  46 depth=
  47
  48 # Resolve a path to be relative to another path.  This is intended for
  49 # converting submodule paths when git-submodule is run in a subdirectory
  50 # and only handles paths where the directory separator is '/'.
  51 #
  52 # The output is the first argument as a path relative to the second argument,
  53 # which defaults to $wt_prefix if it is omitted.
  54 relative_path ()
  55 {
  56         local target curdir result
  57         target=$1
  58         curdir=${2-$wt_prefix}
  59         curdir=${curdir%/}
  60         result=
  61
  62         while test -n "$curdir"
  63         do
  64                 case "$target" in
  65                 "$curdir/"*)
  66                         target=${target#"$curdir"/}
  67                         break
  68                         ;;
  69                 esac
  70
  71                 result="${result}../"
  72                 if test "$curdir" = "${curdir%/*}"
  73                 then
  74                         curdir=
  75                 else
  76                         curdir="${curdir%/*}"
  77                 fi
  78         done
  79
  80         echo "$result$target"
  81 }
  82
  83 die_if_unmatched ()
  84 {
  85         if test "$1" = "#unmatched"
  86         then
  87                 exit 1
  88         fi
  89 }
  90
  91 #
  92 # Print a submodule configuration setting
  93 #
  94 # $1 = submodule name
  95 # $2 = option name
  96 # $3 = default value
  97 #
  98 # Checks in the usual git-config places first (for overrides),
  99 # otherwise it falls back on .gitmodules.  This allows you to
 100 # distribute project-wide defaults in .gitmodules, while still
 101 # customizing individual repositories if necessary.  If the option is
 102 # not in .gitmodules either, print a default value.
 103 #
 104 get_submodule_config () {
 105         name="$1"
 106         option="$2"
 107         default="$3"
 108         value=$(git config submodule."$name"."$option")
 109         if test -z "$value"
 110         then
 111                 value=$(git config -f .gitmodules submodule."$name"."$option")
 112         fi
 113         printf '%s' "${value:-$default}"
 114 }
 115
 116 isnumber()
 117 {
 118         n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
 119 }
 120
 121 # Sanitize the local git environment for use within a submodule. We
 122 # can't simply use clear_local_git_env since we want to preserve some
 123 # of the settings from GIT_CONFIG_PARAMETERS.
 124 sanitize_submodule_env()
 125 {
 126         save_config=$GIT_CONFIG_PARAMETERS
 127         clear_local_git_env
 128         GIT_CONFIG_PARAMETERS=$save_config
 129         export GIT_CONFIG_PARAMETERS
 130 }
 131
 132 #
 133 # Add a new submodule to the working tree, .gitmodules and the index
 134 #
 135 # $@ = repo path
 136 #
 137 # optional branch is stored in global branch variable
 138 #
 139 cmd_add()
 140 {
 141         # parse $args after "submodule ... add".
 142         reference_path=
 143         while test $# -ne 0
 144         do
 145                 case "$1" in
 146                 -b | --branch)
 147                         case "$2" in '') usage ;; esac
 148                         branch=$2
 149                         shift
 150                         ;;
 151                 -f | --force)
 152                         force=$1
 153                         ;;
 154                 -q|--quiet)
 155                         GIT_QUIET=1
 156                         ;;
 157                 --reference)
 158                         case "$2" in '') usage ;; esac
 159                         reference_path=$2
 160                         shift
 161                         ;;
 162                 --reference=*)
 163                         reference_path="${1#--reference=}"
 164                         ;;
 165                 --name)
 166                         case "$2" in '') usage ;; esac
 167                         custom_name=$2
 168                         shift
 169                         ;;
 170                 --depth)
 171                         case "$2" in '') usage ;; esac
 172                         depth="--depth=$2"
 173                         shift
 174                         ;;
 175                 --depth=*)
 176                         depth=$1
 177                         ;;
 178                 --)
 179                         shift
 180                         break
 181                         ;;
 182                 -*)
 183                         usage
 184                         ;;
 185                 *)
 186                         break
 187                         ;;
 188                 esac
 189                 shift
 190         done
 191
 192         if test -n "$reference_path"
 193         then
 194                 is_absolute_path "$reference_path" ||
 195                 reference_path="$wt_prefix$reference_path"
 196
 197                 reference="--reference=$reference_path"
 198         fi
 199
 200         repo=$1
 201         sm_path=$2
 202
 203         if test -z "$sm_path"; then
 204                 sm_path=$(printf '%s\n' "$repo" |
 205                         sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 206         fi
 207
 208         if test -z "$repo" || test -z "$sm_path"; then
 209                 usage
 210         fi
 211
 212         is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 213
 214         # assure repo is absolute or relative to parent
 215         case "$repo" in
 216         ./*|../*)
 217                 test -z "$wt_prefix" ||
 218                 die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 219
 220                 # dereference source url relative to parent's url
 221                 realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 222                 ;;
 223         *:*|/*)
 224                 # absolute url
 225                 realrepo=$repo
 226                 ;;
 227         *)
 228                 die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 229         ;;
 230         esac
 231
 232         # normalize path:
 233         # multiple //; leading ./; /./; /../; trailing /
 234         sm_path=$(printf '%s/\n' "$sm_path" |
 235                 sed -e '
 236                         s|//*|/|g
 237                         s|^\(\./\)*||
 238                         s|/\(\./\)*|/|g
 239                         :start
 240                         s|\([^/]*\)/\.\./||
 241                         tstart
 242                         s|/*$||
 243                 ')
 244         git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 245         die "$(eval_gettext "'\$sm_path' already exists in the index")"
 246
 247         if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 248         then
 249                 eval_gettextln "The following path is ignored by one of your .gitignore files:
 250 \$sm_path
 251 Use -f if you really want to add it." >&2
 252                 exit 1
 253         fi
 254
 255         if test -n "$custom_name"
 256         then
 257                 sm_name="$custom_name"
 258         else
 259                 sm_name="$sm_path"
 260         fi
 261
 262         # perhaps the path exists and is already a git repo, else clone it
 263         if test -e "$sm_path"
 264         then
 265                 if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 266                 then
 267                         eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 268                 else
 269                         die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 270                 fi
 271
 272         else
 273                 if test -d ".git/modules/$sm_name"
 274                 then
 275                         if test -z "$force"
 276                         then
 277                                 eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 278                                 GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 279                                 die "$(eval_gettextln "\
 280 If you want to reuse this local git directory instead of cloning again from
 281   \$realrepo
 282 use the '--force' option. If the local git directory is not the correct repo
 283 or you are unsure what this means choose another name with the '--name' option.")"
 284                         else
 285                                 eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 286                         fi
 287                 fi
 288                 git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 289                 (
 290                         sanitize_submodule_env
 291                         cd "$sm_path" &&
 292                         # ash fails to wordsplit ${branch:+-b "$branch"...}
 293                         case "$branch" in
 294                         '') git checkout -f -q ;;
 295                         ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 296                         esac
 297                 ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 298         fi
 299         git config submodule."$sm_name".url "$realrepo"
 300
 301         git add $force "$sm_path" ||
 302         die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 303
 304         git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 305         git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 306         if test -n "$branch"
 307         then
 308                 git config -f .gitmodules submodule."$sm_name".branch "$branch"
 309         fi &&
 310         git add --force .gitmodules ||
 311         die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 312 }
 313
 314 #
 315 # Execute an arbitrary command sequence in each checked out
 316 # submodule
 317 #
 318 # $@ = command to execute
 319 #
 320 cmd_foreach()
 321 {
 322         # parse $args after "submodule ... foreach".
 323         while test $# -ne 0
 324         do
 325                 case "$1" in
 326                 -q|--quiet)
 327                         GIT_QUIET=1
 328                         ;;
 329                 --recursive)
 330                         recursive=1
 331                         ;;
 332                 -*)
 333                         usage
 334                         ;;
 335                 *)
 336                         break
 337                         ;;
 338                 esac
 339                 shift
 340         done
 341
 342         toplevel=$(pwd)
 343
 344         # dup stdin so that it can be restored when running the external
 345         # command in the subshell (and a recursive call to this function)
 346         exec 3<&0
 347
 348         git submodule--helper list --prefix "$wt_prefix"|
 349         while read mode sha1 stage sm_path
 350         do
 351                 die_if_unmatched "$mode"
 352                 if test -e "$sm_path"/.git
 353                 then
 354                         displaypath=$(relative_path "$prefix$sm_path")
 355                         say "$(eval_gettext "Entering '\$displaypath'")"
 356                         name=$(git submodule--helper name "$sm_path")
 357                         (
 358                                 prefix="$prefix$sm_path/"
 359                                 sanitize_submodule_env
 360                                 cd "$sm_path" &&
 361                                 sm_path=$(relative_path "$sm_path") &&
 362                                 # we make $path available to scripts ...
 363                                 path=$sm_path &&
 364                                 if test $# -eq 1
 365                                 then
 366                                         eval "$1"
 367                                 else
 368                                         "$@"
 369                                 fi &&
 370                                 if test -n "$recursive"
 371                                 then
 372                                         cmd_foreach "--recursive" "$@"
 373                                 fi
 374                         ) <&3 3<&- ||
 375                         die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 376                 fi
 377         done
 378 }
 379
 380 #
 381 # Register submodules in .git/config
 382 #
 383 # $@ = requested paths (default to all)
 384 #
 385 cmd_init()
 386 {
 387         # parse $args after "submodule ... init".
 388         while test $# -ne 0
 389         do
 390                 case "$1" in
 391                 -q|--quiet)
 392                         GIT_QUIET=1
 393                         ;;
 394                 --)
 395                         shift
 396                         break
 397                         ;;
 398                 -*)
 399                         usage
 400                         ;;
 401                 *)
 402                         break
 403                         ;;
 404                 esac
 405                 shift
 406         done
 407
 408         git ${wt_prefix:+-C "$wt_prefix"} submodule--helper init ${GIT_QUIET:+--quiet} ${prefix:+--prefix "$prefix"} "$@"
 409 }
 410
 411 #
 412 # Unregister submodules from .git/config and remove their work tree
 413 #
 414 # $@ = requested paths (use '.' to deinit all submodules)
 415 #
 416 cmd_deinit()
 417 {
 418         # parse $args after "submodule ... deinit".
 419         deinit_all=
 420         while test $# -ne 0
 421         do
 422                 case "$1" in
 423                 -f|--force)
 424                         force=$1
 425                         ;;
 426                 -q|--quiet)
 427                         GIT_QUIET=1
 428                         ;;
 429                 --all)
 430                         deinit_all=t
 431                         ;;
 432                 --)
 433                         shift
 434                         break
 435                         ;;
 436                 -*)
 437                         usage
 438                         ;;
 439                 *)
 440                         break
 441                         ;;
 442                 esac
 443                 shift
 444         done
 445
 446         if test -n "$deinit_all" && test "$#" -ne 0
 447         then
 448                 echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 449                 usage
 450         fi
 451         if test $# = 0 && test -z "$deinit_all"
 452         then
 453                 die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 454         fi
 455
 456         git submodule--helper list --prefix "$wt_prefix" "$@" |
 457         while read mode sha1 stage sm_path
 458         do
 459                 die_if_unmatched "$mode"
 460                 name=$(git submodule--helper name "$sm_path") || exit
 461
 462                 displaypath=$(relative_path "$sm_path")
 463
 464                 # Remove the submodule work tree (unless the user already did it)
 465                 if test -d "$sm_path"
 466                 then
 467                         # Protect submodules containing a .git directory
 468                         if test -d "$sm_path/.git"
 469                         then
 470                                 die "$(eval_gettext "\
 471 Submodule work tree '\$displaypath' contains a .git directory
 472 (use 'rm -rf' if you really want to remove it including all of its history)")"
 473                         fi
 474
 475                         if test -z "$force"
 476                         then
 477                                 git rm -qn "$sm_path" ||
 478                                 die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 479                         fi
 480                         rm -rf "$sm_path" &&
 481                         say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 482                         say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 483                 fi
 484
 485                 mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 486
 487                 # Remove the .git/config entries (unless the user already did it)
 488                 if test -n "$(git config --get-regexp submodule."$name\.")"
 489                 then
 490                         # Remove the whole section so we have a clean state when
 491                         # the user later decides to init this submodule again
 492                         url=$(git config submodule."$name".url)
 493                         git config --remove-section submodule."$name" 2>/dev/null &&
 494                         say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 495                 fi
 496         done
 497 }
 498
 499 is_tip_reachable () (
 500         sanitize_submodule_env &&
 501         cd "$1" &&
 502         rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 503         test -z "$rev"
 504 )
 505
 506 fetch_in_submodule () (
 507         sanitize_submodule_env &&
 508         cd "$1" &&
 509         case "$2" in
 510         '')
 511                 git fetch ;;
 512         *)
 513                 git fetch $(get_default_remote) "$2" ;;
 514         esac
 515 )
 516
 517 #
 518 # Update each submodule path to correct revision, using clone and checkout as needed
 519 #
 520 # $@ = requested paths (default to all)
 521 #
 522 cmd_update()
 523 {
 524         # parse $args after "submodule ... update".
 525         while test $# -ne 0
 526         do
 527                 case "$1" in
 528                 -q|--quiet)
 529                         GIT_QUIET=1
 530                         ;;
 531                 -i|--init)
 532                         init=1
 533                         ;;
 534                 --remote)
 535                         remote=1
 536                         ;;
 537                 -N|--no-fetch)
 538                         nofetch=1
 539                         ;;
 540                 -f|--force)
 541                         force=$1
 542                         ;;
 543                 -r|--rebase)
 544                         update="rebase"
 545                         ;;
 546                 --reference)
 547                         case "$2" in '') usage ;; esac
 548                         reference="--reference=$2"
 549                         shift
 550                         ;;
 551                 --reference=*)
 552                         reference="$1"
 553                         ;;
 554                 -m|--merge)
 555                         update="merge"
 556                         ;;
 557                 --recursive)
 558                         recursive=1
 559                         ;;
 560                 --checkout)
 561                         update="checkout"
 562                         ;;
 563                 --depth)
 564                         case "$2" in '') usage ;; esac
 565                         depth="--depth=$2"
 566                         shift
 567                         ;;
 568                 --depth=*)
 569                         depth=$1
 570                         ;;
 571                 -j|--jobs)
 572                         case "$2" in '') usage ;; esac
 573                         jobs="--jobs=$2"
 574                         shift
 575                         ;;
 576                 --jobs=*)
 577                         jobs=$1
 578                         ;;
 579                 --)
 580                         shift
 581                         break
 582                         ;;
 583                 -*)
 584                         usage
 585                         ;;
 586                 *)
 587                         break
 588                         ;;
 589                 esac
 590                 shift
 591         done
 592
 593         if test -n "$init"
 594         then
 595                 cmd_init "--" "$@" || return
 596         fi
 597
 598         {
 599         git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 600                 ${wt_prefix:+--prefix "$wt_prefix"} \
 601                 ${prefix:+--recursive-prefix "$prefix"} \
 602                 ${update:+--update "$update"} \
 603                 ${reference:+--reference "$reference"} \
 604                 ${depth:+--depth "$depth"} \
 605                 ${jobs:+$jobs} \
 606                 "$@" || echo "#unmatched"
 607         } | {
 608         err=
 609         while read mode sha1 stage just_cloned sm_path
 610         do
 611                 die_if_unmatched "$mode"
 612
 613                 name=$(git submodule--helper name "$sm_path") || exit
 614                 url=$(git config submodule."$name".url)
 615                 branch=$(get_submodule_config "$name" branch master)
 616                 if ! test -z "$update"
 617                 then
 618                         update_module=$update
 619                 else
 620                         update_module=$(git config submodule."$name".update)
 621                         if test -z "$update_module"
 622                         then
 623                                 update_module="checkout"
 624                         fi
 625                 fi
 626
 627                 displaypath=$(relative_path "$prefix$sm_path")
 628
 629                 if test $just_cloned -eq 1
 630                 then
 631                         subsha1=
 632                         update_module=checkout
 633                 else
 634                         subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 635                                 git rev-parse --verify HEAD) ||
 636                         die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 637                 fi
 638
 639                 if test -n "$remote"
 640                 then
 641                         if test -z "$nofetch"
 642                         then
 643                                 # Fetch remote before determining tracking $sha1
 644                                 (sanitize_submodule_env; cd "$sm_path" && git-fetch) ||
 645                                 die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 646                         fi
 647                         remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 648                         sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 649                                 git rev-parse --verify "${remote_name}/${branch}") ||
 650                         die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 651                 fi
 652
 653                 if test "$subsha1" != "$sha1" || test -n "$force"
 654                 then
 655                         subforce=$force
 656                         # If we don't already have a -f flag and the submodule has never been checked out
 657                         if test -z "$subsha1" && test -z "$force"
 658                         then
 659                                 subforce="-f"
 660                         fi
 661
 662                         if test -z "$nofetch"
 663                         then
 664                                 # Run fetch only if $sha1 isn't present or it
 665                                 # is not reachable from a ref.
 666                                 is_tip_reachable "$sm_path" "$sha1" ||
 667                                 fetch_in_submodule "$sm_path" ||
 668                                 die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 669
 670                                 # Now we tried the usual fetch, but $sha1 may
 671                                 # not be reachable from any of the refs
 672                                 is_tip_reachable "$sm_path" "$sha1" ||
 673                                 fetch_in_submodule "$sm_path" "$sha1" ||
 674                                 die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 675                         fi
 676
 677                         must_die_on_failure=
 678                         case "$update_module" in
 679                         checkout)
 680                                 command="git checkout $subforce -q"
 681                                 die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 682                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 683                                 ;;
 684                         rebase)
 685                                 command="git rebase"
 686                                 die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 687                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 688                                 must_die_on_failure=yes
 689                                 ;;
 690                         merge)
 691                                 command="git merge"
 692                                 die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 693                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 694                                 must_die_on_failure=yes
 695                                 ;;
 696                         !*)
 697                                 command="${update_module#!}"
 698                                 die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 699                                 say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 700                                 must_die_on_failure=yes
 701                                 ;;
 702                         *)
 703                                 die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
 704                         esac
 705
 706                         if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 707                         then
 708                                 say "$say_msg"
 709                         elif test -n "$must_die_on_failure"
 710                         then
 711                                 die_with_status 2 "$die_msg"
 712                         else
 713                                 err="${err};$die_msg"
 714                                 continue
 715                         fi
 716                 fi
 717
 718                 if test -n "$recursive"
 719                 then
 720                         (
 721                                 prefix=$(relative_path "$prefix$sm_path/")
 722                                 wt_prefix=
 723                                 sanitize_submodule_env
 724                                 cd "$sm_path" &&
 725                                 eval cmd_update
 726                         )
 727                         res=$?
 728                         if test $res -gt 0
 729                         then
 730                                 die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 731                                 if test $res -eq 1
 732                                 then
 733                                         err="${err};$die_msg"
 734                                         continue
 735                                 else
 736                                         die_with_status $res "$die_msg"
 737                                 fi
 738                         fi
 739                 fi
 740         done
 741
 742         if test -n "$err"
 743         then
 744                 OIFS=$IFS
 745                 IFS=';'
 746                 for e in $err
 747                 do
 748                         if test -n "$e"
 749                         then
 750                                 echo >&2 "$e"
 751                         fi
 752                 done
 753                 IFS=$OIFS
 754                 exit 1
 755         fi
 756         }
 757 }
 758
 759 set_name_rev () {
 760         revname=$( (
 761                 sanitize_submodule_env
 762                 cd "$1" && {
 763                         git describe "$2" 2>/dev/null ||
 764                         git describe --tags "$2" 2>/dev/null ||
 765                         git describe --contains "$2" 2>/dev/null ||
 766                         git describe --all --always "$2"
 767                 }
 768         ) )
 769         test -z "$revname" || revname=" ($revname)"
 770 }
 771 #
 772 # Show commit summary for submodules in index or working tree
 773 #
 774 # If '--cached' is given, show summary between index and given commit,
 775 # or between working tree and given commit
 776 #
 777 # $@ = [commit (default 'HEAD'),] requested paths (default all)
 778 #
 779 cmd_summary() {
 780         summary_limit=-1
 781         for_status=
 782         diff_cmd=diff-index
 783
 784         # parse $args after "submodule ... summary".
 785         while test $# -ne 0
 786         do
 787                 case "$1" in
 788                 --cached)
 789                         cached="$1"
 790                         ;;
 791                 --files)
 792                         files="$1"
 793                         ;;
 794                 --for-status)
 795                         for_status="$1"
 796                         ;;
 797                 -n|--summary-limit)
 798                         summary_limit="$2"
 799                         isnumber "$summary_limit" || usage
 800                         shift
 801                         ;;
 802                 --summary-limit=*)
 803                         summary_limit="${1#--summary-limit=}"
 804                         isnumber "$summary_limit" || usage
 805                         ;;
 806                 --)
 807                         shift
 808                         break
 809                         ;;
 810                 -*)
 811                         usage
 812                         ;;
 813                 *)
 814                         break
 815                         ;;
 816                 esac
 817                 shift
 818         done
 819
 820         test $summary_limit = 0 && return
 821
 822         if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 823         then
 824                 head=$rev
 825                 test $# = 0 || shift
 826         elif test -z "$1" || test "$1" = "HEAD"
 827         then
 828                 # before the first commit: compare with an empty tree
 829                 head=$(git hash-object -w -t tree --stdin </dev/null)
 830                 test -z "$1" || shift
 831         else
 832                 head="HEAD"
 833         fi
 834
 835         if [ -n "$files" ]
 836         then
 837                 test -n "$cached" &&
 838                 die "$(gettext "The --cached option cannot be used with the --files option")"
 839                 diff_cmd=diff-files
 840                 head=
 841         fi
 842
 843         cd_to_toplevel
 844         eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 845         # Get modified modules cared by user
 846         modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 847                 sane_egrep '^:([0-7]* )?160000' |
 848                 while read mod_src mod_dst sha1_src sha1_dst status sm_path
 849                 do
 850                         # Always show modules deleted or type-changed (blob<->module)
 851                         if test "$status" = D || test "$status" = T
 852                         then
 853                                 printf '%s\n' "$sm_path"
 854                                 continue
 855                         fi
 856                         # Respect the ignore setting for --for-status.
 857                         if test -n "$for_status"
 858                         then
 859                                 name=$(git submodule--helper name "$sm_path")
 860                                 ignore_config=$(get_submodule_config "$name" ignore none)
 861                                 test $status != A && test $ignore_config = all && continue
 862                         fi
 863                         # Also show added or modified modules which are checked out
 864                         GIT_DIR="$sm_path/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 865                         printf '%s\n' "$sm_path"
 866                 done
 867         )
 868
 869         test -z "$modules" && return
 870
 871         git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 872         sane_egrep '^:([0-7]* )?160000' |
 873         cut -c2- |
 874         while read mod_src mod_dst sha1_src sha1_dst status name
 875         do
 876                 if test -z "$cached" &&
 877                         test $sha1_dst = 0000000000000000000000000000000000000000
 878                 then
 879                         case "$mod_dst" in
 880                         160000)
 881                                 sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 882                                 ;;
 883                         100644 | 100755 | 120000)
 884                                 sha1_dst=$(git hash-object $name)
 885                                 ;;
 886                         000000)
 887                                 ;; # removed
 888                         *)
 889                                 # unexpected type
 890                                 eval_gettextln "unexpected mode \$mod_dst" >&2
 891                                 continue ;;
 892                         esac
 893                 fi
 894                 missing_src=
 895                 missing_dst=
 896
 897                 test $mod_src = 160000 &&
 898                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 899                 missing_src=t
 900
 901                 test $mod_dst = 160000 &&
 902                 ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 903                 missing_dst=t
 904
 905                 display_name=$(relative_path "$name")
 906
 907                 total_commits=
 908                 case "$missing_src,$missing_dst" in
 909                 t,)
 910                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 911                         ;;
 912                 ,t)
 913                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 914                         ;;
 915                 t,t)
 916                         errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 917                         ;;
 918                 *)
 919                         errmsg=
 920                         total_commits=$(
 921                         if test $mod_src = 160000 && test $mod_dst = 160000
 922                         then
 923                                 range="$sha1_src...$sha1_dst"
 924                         elif test $mod_src = 160000
 925                         then
 926                                 range=$sha1_src
 927                         else
 928                                 range=$sha1_dst
 929                         fi
 930                         GIT_DIR="$name/.git" \
 931                         git rev-list --first-parent $range -- | wc -l
 932                         )
 933                         total_commits=" ($(($total_commits + 0)))"
 934                         ;;
 935                 esac
 936
 937                 sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 938                 sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 939                 if test $status = T
 940                 then
 941                         blob="$(gettext "blob")"
 942                         submodule="$(gettext "submodule")"
 943                         if test $mod_dst = 160000
 944                         then
 945                                 echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 946                         else
 947                                 echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 948                         fi
 949                 else
 950                         echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 951                 fi
 952                 if test -n "$errmsg"
 953                 then
 954                         # Don't give error msg for modification whose dst is not submodule
 955                         # i.e. deleted or changed to blob
 956                         test $mod_dst = 160000 && echo "$errmsg"
 957                 else
 958                         if test $mod_src = 160000 && test $mod_dst = 160000
 959                         then
 960                                 limit=
 961                                 test $summary_limit -gt 0 && limit="-$summary_limit"
 962                                 GIT_DIR="$name/.git" \
 963                                 git log $limit --pretty='format:  %m %s' \
 964                                 --first-parent $sha1_src...$sha1_dst
 965                         elif test $mod_dst = 160000
 966                         then
 967                                 GIT_DIR="$name/.git" \
 968                                 git log --pretty='format:  > %s' -1 $sha1_dst
 969                         else
 970                                 GIT_DIR="$name/.git" \
 971                                 git log --pretty='format:  < %s' -1 $sha1_src
 972                         fi
 973                         echo
 974                 fi
 975                 echo
 976         done
 977 }
 978 #
 979 # List all submodules, prefixed with:
 980 #  - submodule not initialized
 981 #  + different revision checked out
 982 #
 983 # If --cached was specified the revision in the index will be printed
 984 # instead of the currently checked out revision.
 985 #
 986 # $@ = requested paths (default to all)
 987 #
 988 cmd_status()
 989 {
 990         # parse $args after "submodule ... status".
 991         while test $# -ne 0
 992         do
 993                 case "$1" in
 994                 -q|--quiet)
 995                         GIT_QUIET=1
 996                         ;;
 997                 --cached)
 998                         cached=1
 999                         ;;
1000                 --recursive)
1001                         recursive=1
1002                         ;;
1003                 --)
1004                         shift
1005                         break
1006                         ;;
1007                 -*)
1008                         usage
1009                         ;;
1010                 *)
1011                         break
1012                         ;;
1013                 esac
1014                 shift
1015         done
1016
1017         git submodule--helper list --prefix "$wt_prefix" "$@" |
1018         while read mode sha1 stage sm_path
1019         do
1020                 die_if_unmatched "$mode"
1021                 name=$(git submodule--helper name "$sm_path") || exit
1022                 url=$(git config submodule."$name".url)
1023                 displaypath=$(relative_path "$prefix$sm_path")
1024                 if test "$stage" = U
1025                 then
1026                         say "U$sha1 $displaypath"
1027                         continue
1028                 fi
1029                 if test -z "$url" ||
1030                 {
1031                         ! test -d "$sm_path"/.git &&
1032                         ! test -f "$sm_path"/.git
1033                 }
1034                 then
1035                         say "-$sha1 $displaypath"
1036                         continue;
1037                 fi
1038                 if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1039                 then
1040                         set_name_rev "$sm_path" "$sha1"
1041                         say " $sha1 $displaypath$revname"
1042                 else
1043                         if test -z "$cached"
1044                         then
1045                                 sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1046                         fi
1047                         set_name_rev "$sm_path" "$sha1"
1048                         say "+$sha1 $displaypath$revname"
1049                 fi
1050
1051                 if test -n "$recursive"
1052                 then
1053                         (
1054                                 prefix="$displaypath/"
1055                                 sanitize_submodule_env
1056                                 wt_prefix=
1057                                 cd "$sm_path" &&
1058                                 eval cmd_status
1059                         ) ||
1060                         die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1061                 fi
1062         done
1063 }
1064 #
1065 # Sync remote urls for submodules
1066 # This makes the value for remote.$remote.url match the value
1067 # specified in .gitmodules.
1068 #
1069 cmd_sync()
1070 {
1071         while test $# -ne 0
1072         do
1073                 case "$1" in
1074                 -q|--quiet)
1075                         GIT_QUIET=1
1076                         shift
1077                         ;;
1078                 --recursive)
1079                         recursive=1
1080                         shift
1081                         ;;
1082                 --)
1083                         shift
1084                         break
1085                         ;;
1086                 -*)
1087                         usage
1088                         ;;
1089                 *)
1090                         break
1091                         ;;
1092                 esac
1093         done
1094         cd_to_toplevel
1095         git submodule--helper list --prefix "$wt_prefix" "$@" |
1096         while read mode sha1 stage sm_path
1097         do
1098                 die_if_unmatched "$mode"
1099                 name=$(git submodule--helper name "$sm_path")
1100                 url=$(git config -f .gitmodules --get submodule."$name".url)
1101
1102                 # Possibly a url relative to parent
1103                 case "$url" in
1104                 ./*|../*)
1105                         # rewrite foo/bar as ../.. to find path from
1106                         # submodule work tree to superproject work tree
1107                         up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1108                         # guarantee a trailing /
1109                         up_path=${up_path%/}/ &&
1110                         # path from submodule work tree to submodule origin repo
1111                         sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1112                         # path from superproject work tree to submodule origin repo
1113                         super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1114                         ;;
1115                 *)
1116                         sub_origin_url="$url"
1117                         super_config_url="$url"
1118                         ;;
1119                 esac
1120
1121                 if git config "submodule.$name.url" >/dev/null 2>/dev/null
1122                 then
1123                         displaypath=$(relative_path "$prefix$sm_path")
1124                         say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1125                         git config submodule."$name".url "$super_config_url"
1126
1127                         if test -e "$sm_path"/.git
1128                         then
1129                         (
1130                                 sanitize_submodule_env
1131                                 cd "$sm_path"
1132                                 remote=$(get_default_remote)
1133                                 git config remote."$remote".url "$sub_origin_url"
1134
1135                                 if test -n "$recursive"
1136                                 then
1137                                         prefix="$prefix$sm_path/"
1138                                         eval cmd_sync
1139                                 fi
1140                         )
1141                         fi
1142                 fi
1143         done
1144 }
1145
1146 # This loop parses the command line arguments to find the
1147 # subcommand name to dispatch.  Parsing of the subcommand specific
1148 # options are primarily done by the subcommand implementations.
1149 # Subcommand specific options such as --branch and --cached are
1150 # parsed here as well, for backward compatibility.
1151
1152 while test $# != 0 && test -z "$command"
1153 do
1154         case "$1" in
1155         add | foreach | init | deinit | update | status | summary | sync)
1156                 command=$1
1157                 ;;
1158         -q|--quiet)
1159                 GIT_QUIET=1
1160                 ;;
1161         -b|--branch)
1162                 case "$2" in
1163                 '')
1164                         usage
1165                         ;;
1166                 esac
1167                 branch="$2"; shift
1168                 ;;
1169         --cached)
1170                 cached="$1"
1171                 ;;
1172         --)
1173                 break
1174                 ;;
1175         -*)
1176                 usage
1177                 ;;
1178         *)
1179                 break
1180                 ;;
1181         esac
1182         shift
1183 done
1184
1185 # No command word defaults to "status"
1186 if test -z "$command"
1187 then
1188     if test $# = 0
1189     then
1190         command=status
1191     else
1192         usage
1193     fi
1194 fi
1195
1196 # "-b branch" is accepted only by "add"
1197 if test -n "$branch" && test "$command" != add
1198 then
1199         usage
1200 fi
1201
1202 # "--cached" is accepted only by "status" and "summary"
1203 if test -n "$cached" && test "$command" != status && test "$command" != summary
1204 then
1205         usage
1206 fi
1207
1208 "cmd_$command" "$@"