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