git-submodule.shon commit Merge branch 'jn/vcs-svn-cleanup' into next (c184f08)
   1#!/bin/sh
   2#
   3# git-submodule.sh: add, init, update or list git submodules
   4#
   5# Copyright (c) 2007 Lars Hjemli
   6
   7dashless=$(basename "$0" | sed -e 's/-/ /')
   8USAGE="[--quiet] add [-b <branch>] [-f|--force] [--name <name>] [--reference <repository>] [--] <repository> [<path>]
   9   or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10   or: $dashless [--quiet] init [--] [<path>...]
  11   or: $dashless [--quiet] deinit [-f|--force] (--all| [--] <path>...)
  12   or: $dashless [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--checkout|--merge|--rebase] [--[no-]recommend-shallow] [--reference <repository>] [--recursive] [--] [<path>...]
  13   or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  14   or: $dashless [--quiet] foreach [--recursive] <command>
  15   or: $dashless [--quiet] sync [--recursive] [--] [<path>...]
  16   or: $dashless [--quiet] absorbgitdirs [--] [<path>...]"
  17OPTIONS_SPEC=
  18SUBDIRECTORY_OK=Yes
  19. git-sh-setup
  20. git-parse-remote
  21require_work_tree
  22wt_prefix=$(git rev-parse --show-prefix)
  23cd_to_toplevel
  24
  25# Tell the rest of git that any URLs we get don't come
  26# directly from the user, so it can apply policy as appropriate.
  27GIT_PROTOCOL_FROM_USER=0
  28export GIT_PROTOCOL_FROM_USER
  29
  30command=
  31branch=
  32force=
  33reference=
  34cached=
  35recursive=
  36init=
  37files=
  38remote=
  39nofetch=
  40update=
  41prefix=
  42custom_name=
  43depth=
  44progress=
  45
  46die_if_unmatched ()
  47{
  48        if test "$1" = "#unmatched"
  49        then
  50                exit ${2:-1}
  51        fi
  52}
  53
  54#
  55# Print a submodule configuration setting
  56#
  57# $1 = submodule name
  58# $2 = option name
  59# $3 = default value
  60#
  61# Checks in the usual git-config places first (for overrides),
  62# otherwise it falls back on .gitmodules.  This allows you to
  63# distribute project-wide defaults in .gitmodules, while still
  64# customizing individual repositories if necessary.  If the option is
  65# not in .gitmodules either, print a default value.
  66#
  67get_submodule_config () {
  68        name="$1"
  69        option="$2"
  70        default="$3"
  71        value=$(git config submodule."$name"."$option")
  72        if test -z "$value"
  73        then
  74                value=$(git config -f .gitmodules submodule."$name"."$option")
  75        fi
  76        printf '%s' "${value:-$default}"
  77}
  78
  79isnumber()
  80{
  81        n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
  82}
  83
  84# Sanitize the local git environment for use within a submodule. We
  85# can't simply use clear_local_git_env since we want to preserve some
  86# of the settings from GIT_CONFIG_PARAMETERS.
  87sanitize_submodule_env()
  88{
  89        save_config=$GIT_CONFIG_PARAMETERS
  90        clear_local_git_env
  91        GIT_CONFIG_PARAMETERS=$save_config
  92        export GIT_CONFIG_PARAMETERS
  93}
  94
  95#
  96# Add a new submodule to the working tree, .gitmodules and the index
  97#
  98# $@ = repo path
  99#
 100# optional branch is stored in global branch variable
 101#
 102cmd_add()
 103{
 104        # parse $args after "submodule ... add".
 105        reference_path=
 106        while test $# -ne 0
 107        do
 108                case "$1" in
 109                -b | --branch)
 110                        case "$2" in '') usage ;; esac
 111                        branch=$2
 112                        shift
 113                        ;;
 114                -f | --force)
 115                        force=$1
 116                        ;;
 117                -q|--quiet)
 118                        GIT_QUIET=1
 119                        ;;
 120                --reference)
 121                        case "$2" in '') usage ;; esac
 122                        reference_path=$2
 123                        shift
 124                        ;;
 125                --reference=*)
 126                        reference_path="${1#--reference=}"
 127                        ;;
 128                --name)
 129                        case "$2" in '') usage ;; esac
 130                        custom_name=$2
 131                        shift
 132                        ;;
 133                --depth)
 134                        case "$2" in '') usage ;; esac
 135                        depth="--depth=$2"
 136                        shift
 137                        ;;
 138                --depth=*)
 139                        depth=$1
 140                        ;;
 141                --)
 142                        shift
 143                        break
 144                        ;;
 145                -*)
 146                        usage
 147                        ;;
 148                *)
 149                        break
 150                        ;;
 151                esac
 152                shift
 153        done
 154
 155        if test -n "$reference_path"
 156        then
 157                is_absolute_path "$reference_path" ||
 158                reference_path="$wt_prefix$reference_path"
 159
 160                reference="--reference=$reference_path"
 161        fi
 162
 163        repo=$1
 164        sm_path=$2
 165
 166        if test -z "$sm_path"; then
 167                sm_path=$(printf '%s\n' "$repo" |
 168                        sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 169        fi
 170
 171        if test -z "$repo" || test -z "$sm_path"; then
 172                usage
 173        fi
 174
 175        is_absolute_path "$sm_path" || sm_path="$wt_prefix$sm_path"
 176
 177        # assure repo is absolute or relative to parent
 178        case "$repo" in
 179        ./*|../*)
 180                test -z "$wt_prefix" ||
 181                die "$(gettext "Relative path can only be used from the toplevel of the working tree")"
 182
 183                # dereference source url relative to parent's url
 184                realrepo=$(git submodule--helper resolve-relative-url "$repo") || exit
 185                ;;
 186        *:*|/*)
 187                # absolute url
 188                realrepo=$repo
 189                ;;
 190        *)
 191                die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 192        ;;
 193        esac
 194
 195        # normalize path:
 196        # multiple //; leading ./; /./; /../; trailing /
 197        sm_path=$(printf '%s/\n' "$sm_path" |
 198                sed -e '
 199                        s|//*|/|g
 200                        s|^\(\./\)*||
 201                        s|/\(\./\)*|/|g
 202                        :start
 203                        s|\([^/]*\)/\.\./||
 204                        tstart
 205                        s|/*$||
 206                ')
 207        if test -z "$force"
 208        then
 209                git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 210                die "$(eval_gettext "'\$sm_path' already exists in the index")"
 211        else
 212                git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
 213                die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
 214        fi
 215
 216        if test -z "$force" &&
 217                ! git add --dry-run --ignore-missing --no-warn-embedded-repo "$sm_path" > /dev/null 2>&1
 218        then
 219                eval_gettextln "The following path is ignored by one of your .gitignore files:
 220\$sm_path
 221Use -f if you really want to add it." >&2
 222                exit 1
 223        fi
 224
 225        if test -n "$custom_name"
 226        then
 227                sm_name="$custom_name"
 228        else
 229                sm_name="$sm_path"
 230        fi
 231
 232        # perhaps the path exists and is already a git repo, else clone it
 233        if test -e "$sm_path"
 234        then
 235                if test -d "$sm_path"/.git || test -f "$sm_path"/.git
 236                then
 237                        eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 238                else
 239                        die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 240                fi
 241
 242        else
 243                if test -d ".git/modules/$sm_name"
 244                then
 245                        if test -z "$force"
 246                        then
 247                                eval_gettextln >&2 "A git directory for '\$sm_name' is found locally with remote(s):"
 248                                GIT_DIR=".git/modules/$sm_name" GIT_WORK_TREE=. git remote -v | grep '(fetch)' | sed -e s,^,"  ", -e s,' (fetch)',, >&2
 249                                die "$(eval_gettextln "\
 250If you want to reuse this local git directory instead of cloning again from
 251  \$realrepo
 252use the '--force' option. If the local git directory is not the correct repo
 253or you are unsure what this means choose another name with the '--name' option.")"
 254                        else
 255                                eval_gettextln "Reactivating local git directory for submodule '\$sm_name'."
 256                        fi
 257                fi
 258                git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" ${reference:+"$reference"} ${depth:+"$depth"} || exit
 259                (
 260                        sanitize_submodule_env
 261                        cd "$sm_path" &&
 262                        # ash fails to wordsplit ${branch:+-b "$branch"...}
 263                        case "$branch" in
 264                        '') git checkout -f -q ;;
 265                        ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 266                        esac
 267                ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 268        fi
 269        git config submodule."$sm_name".url "$realrepo"
 270
 271        git add --no-warn-embedded-repo $force "$sm_path" ||
 272        die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 273
 274        git config -f .gitmodules submodule."$sm_name".path "$sm_path" &&
 275        git config -f .gitmodules submodule."$sm_name".url "$repo" &&
 276        if test -n "$branch"
 277        then
 278                git config -f .gitmodules submodule."$sm_name".branch "$branch"
 279        fi &&
 280        git add --force .gitmodules ||
 281        die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 282
 283        # NEEDSWORK: In a multi-working-tree world, this needs to be
 284        # set in the per-worktree config.
 285        if git config --get submodule.active >/dev/null
 286        then
 287                # If the submodule being adding isn't already covered by the
 288                # current configured pathspec, set the submodule's active flag
 289                if ! git submodule--helper is-active "$sm_path"
 290                then
 291                        git config submodule."$sm_name".active "true"
 292                fi
 293        else
 294                git config submodule."$sm_name".active "true"
 295        fi
 296}
 297
 298#
 299# Execute an arbitrary command sequence in each checked out
 300# submodule
 301#
 302# $@ = command to execute
 303#
 304cmd_foreach()
 305{
 306        # parse $args after "submodule ... foreach".
 307        while test $# -ne 0
 308        do
 309                case "$1" in
 310                -q|--quiet)
 311                        GIT_QUIET=1
 312                        ;;
 313                --recursive)
 314                        recursive=1
 315                        ;;
 316                -*)
 317                        usage
 318                        ;;
 319                *)
 320                        break
 321                        ;;
 322                esac
 323                shift
 324        done
 325
 326        toplevel=$(pwd)
 327
 328        # dup stdin so that it can be restored when running the external
 329        # command in the subshell (and a recursive call to this function)
 330        exec 3<&0
 331
 332        {
 333                git submodule--helper list --prefix "$wt_prefix" ||
 334                echo "#unmatched" $?
 335        } |
 336        while read -r mode sha1 stage sm_path
 337        do
 338                die_if_unmatched "$mode" "$sha1"
 339                if test -e "$sm_path"/.git
 340                then
 341                        displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 342                        say "$(eval_gettext "Entering '\$displaypath'")"
 343                        name=$(git submodule--helper name "$sm_path")
 344                        (
 345                                prefix="$prefix$sm_path/"
 346                                sanitize_submodule_env
 347                                cd "$sm_path" &&
 348                                sm_path=$(git submodule--helper relative-path "$sm_path" "$wt_prefix") &&
 349                                # we make $path available to scripts ...
 350                                path=$sm_path &&
 351                                if test $# -eq 1
 352                                then
 353                                        eval "$1"
 354                                else
 355                                        "$@"
 356                                fi &&
 357                                if test -n "$recursive"
 358                                then
 359                                        cmd_foreach "--recursive" "$@"
 360                                fi
 361                        ) <&3 3<&- ||
 362                        die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
 363                fi
 364        done
 365}
 366
 367#
 368# Register submodules in .git/config
 369#
 370# $@ = requested paths (default to all)
 371#
 372cmd_init()
 373{
 374        # parse $args after "submodule ... init".
 375        while test $# -ne 0
 376        do
 377                case "$1" in
 378                -q|--quiet)
 379                        GIT_QUIET=1
 380                        ;;
 381                --)
 382                        shift
 383                        break
 384                        ;;
 385                -*)
 386                        usage
 387                        ;;
 388                *)
 389                        break
 390                        ;;
 391                esac
 392                shift
 393        done
 394
 395        git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper init ${GIT_QUIET:+--quiet}  "$@"
 396}
 397
 398#
 399# Unregister submodules from .git/config and remove their work tree
 400#
 401cmd_deinit()
 402{
 403        # parse $args after "submodule ... deinit".
 404        deinit_all=
 405        while test $# -ne 0
 406        do
 407                case "$1" in
 408                -f|--force)
 409                        force=$1
 410                        ;;
 411                -q|--quiet)
 412                        GIT_QUIET=1
 413                        ;;
 414                --all)
 415                        deinit_all=t
 416                        ;;
 417                --)
 418                        shift
 419                        break
 420                        ;;
 421                -*)
 422                        usage
 423                        ;;
 424                *)
 425                        break
 426                        ;;
 427                esac
 428                shift
 429        done
 430
 431        if test -n "$deinit_all" && test "$#" -ne 0
 432        then
 433                echo >&2 "$(eval_gettext "pathspec and --all are incompatible")"
 434                usage
 435        fi
 436        if test $# = 0 && test -z "$deinit_all"
 437        then
 438                die "$(eval_gettext "Use '--all' if you really want to deinitialize all submodules")"
 439        fi
 440
 441        {
 442                git submodule--helper list --prefix "$wt_prefix" "$@" ||
 443                echo "#unmatched" $?
 444        } |
 445        while read -r mode sha1 stage sm_path
 446        do
 447                die_if_unmatched "$mode" "$sha1"
 448                name=$(git submodule--helper name "$sm_path") || exit
 449
 450                displaypath=$(git submodule--helper relative-path "$sm_path" "$wt_prefix")
 451
 452                # Remove the submodule work tree (unless the user already did it)
 453                if test -d "$sm_path"
 454                then
 455                        # Protect submodules containing a .git directory
 456                        if test -d "$sm_path/.git"
 457                        then
 458                                die "$(eval_gettext "\
 459Submodule work tree '\$displaypath' contains a .git directory
 460(use 'rm -rf' if you really want to remove it including all of its history)")"
 461                        fi
 462
 463                        if test -z "$force"
 464                        then
 465                                git rm -qn "$sm_path" ||
 466                                die "$(eval_gettext "Submodule work tree '\$displaypath' contains local modifications; use '-f' to discard them")"
 467                        fi
 468                        rm -rf "$sm_path" &&
 469                        say "$(eval_gettext "Cleared directory '\$displaypath'")" ||
 470                        say "$(eval_gettext "Could not remove submodule work tree '\$displaypath'")"
 471                fi
 472
 473                mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$displaypath'")"
 474
 475                # Remove the .git/config entries (unless the user already did it)
 476                if test -n "$(git config --get-regexp submodule."$name\.")"
 477                then
 478                        # Remove the whole section so we have a clean state when
 479                        # the user later decides to init this submodule again
 480                        url=$(git config submodule."$name".url)
 481                        git config --remove-section submodule."$name" 2>/dev/null &&
 482                        say "$(eval_gettext "Submodule '\$name' (\$url) unregistered for path '\$displaypath'")"
 483                fi
 484        done
 485}
 486
 487is_tip_reachable () (
 488        sanitize_submodule_env &&
 489        cd "$1" &&
 490        rev=$(git rev-list -n 1 "$2" --not --all 2>/dev/null) &&
 491        test -z "$rev"
 492)
 493
 494fetch_in_submodule () (
 495        sanitize_submodule_env &&
 496        cd "$1" &&
 497        case "$2" in
 498        '')
 499                git fetch ;;
 500        *)
 501                shift
 502                git fetch $(get_default_remote) "$@" ;;
 503        esac
 504)
 505
 506#
 507# Update each submodule path to correct revision, using clone and checkout as needed
 508#
 509# $@ = requested paths (default to all)
 510#
 511cmd_update()
 512{
 513        # parse $args after "submodule ... update".
 514        while test $# -ne 0
 515        do
 516                case "$1" in
 517                -q|--quiet)
 518                        GIT_QUIET=1
 519                        ;;
 520                --progress)
 521                        progress="--progress"
 522                        ;;
 523                -i|--init)
 524                        init=1
 525                        ;;
 526                --remote)
 527                        remote=1
 528                        ;;
 529                -N|--no-fetch)
 530                        nofetch=1
 531                        ;;
 532                -f|--force)
 533                        force=$1
 534                        ;;
 535                -r|--rebase)
 536                        update="rebase"
 537                        ;;
 538                --reference)
 539                        case "$2" in '') usage ;; esac
 540                        reference="--reference=$2"
 541                        shift
 542                        ;;
 543                --reference=*)
 544                        reference="$1"
 545                        ;;
 546                -m|--merge)
 547                        update="merge"
 548                        ;;
 549                --recursive)
 550                        recursive=1
 551                        ;;
 552                --checkout)
 553                        update="checkout"
 554                        ;;
 555                --recommend-shallow)
 556                        recommend_shallow="--recommend-shallow"
 557                        ;;
 558                --no-recommend-shallow)
 559                        recommend_shallow="--no-recommend-shallow"
 560                        ;;
 561                --depth)
 562                        case "$2" in '') usage ;; esac
 563                        depth="--depth=$2"
 564                        shift
 565                        ;;
 566                --depth=*)
 567                        depth=$1
 568                        ;;
 569                -j|--jobs)
 570                        case "$2" in '') usage ;; esac
 571                        jobs="--jobs=$2"
 572                        shift
 573                        ;;
 574                --jobs=*)
 575                        jobs=$1
 576                        ;;
 577                --)
 578                        shift
 579                        break
 580                        ;;
 581                -*)
 582                        usage
 583                        ;;
 584                *)
 585                        break
 586                        ;;
 587                esac
 588                shift
 589        done
 590
 591        if test -n "$init"
 592        then
 593                cmd_init "--" "$@" || return
 594        fi
 595
 596        {
 597        git submodule--helper update-clone ${GIT_QUIET:+--quiet} \
 598                ${progress:+"$progress"} \
 599                ${wt_prefix:+--prefix "$wt_prefix"} \
 600                ${prefix:+--recursive-prefix "$prefix"} \
 601                ${update:+--update "$update"} \
 602                ${reference:+"$reference"} \
 603                ${depth:+--depth "$depth"} \
 604                ${recommend_shallow:+"$recommend_shallow"} \
 605                ${jobs:+$jobs} \
 606                "$@" || echo "#unmatched" $?
 607        } | {
 608        err=
 609        while read -r mode sha1 stage just_cloned sm_path
 610        do
 611                die_if_unmatched "$mode" "$sha1"
 612
 613                name=$(git submodule--helper name "$sm_path") || exit
 614                if ! test -z "$update"
 615                then
 616                        update_module=$update
 617                else
 618                        update_module=$(git config submodule."$name".update)
 619                        if test -z "$update_module"
 620                        then
 621                                update_module="checkout"
 622                        fi
 623                fi
 624
 625                displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
 626
 627                if test $just_cloned -eq 1
 628                then
 629                        subsha1=
 630                        case "$update_module" in
 631                        merge | rebase | none)
 632                                update_module=checkout ;;
 633                        esac
 634                else
 635                        subsha1=$(sanitize_submodule_env; cd "$sm_path" &&
 636                                git rev-parse --verify HEAD) ||
 637                        die "$(eval_gettext "Unable to find current revision in submodule path '\$displaypath'")"
 638                fi
 639
 640                if test -n "$remote"
 641                then
 642                        branch=$(git submodule--helper remote-branch "$sm_path")
 643                        if test -z "$nofetch"
 644                        then
 645                                # Fetch remote before determining tracking $sha1
 646                                fetch_in_submodule "$sm_path" $depth ||
 647                                die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 648                        fi
 649                        remote_name=$(sanitize_submodule_env; cd "$sm_path" && get_default_remote)
 650                        sha1=$(sanitize_submodule_env; cd "$sm_path" &&
 651                                git rev-parse --verify "${remote_name}/${branch}") ||
 652                        die "$(eval_gettext "Unable to find current \${remote_name}/\${branch} revision in submodule path '\$sm_path'")"
 653                fi
 654
 655                if test "$subsha1" != "$sha1" || test -n "$force"
 656                then
 657                        subforce=$force
 658                        # If we don't already have a -f flag and the submodule has never been checked out
 659                        if test -z "$subsha1" && test -z "$force"
 660                        then
 661                                subforce="-f"
 662                        fi
 663
 664                        if test -z "$nofetch"
 665                        then
 666                                # Run fetch only if $sha1 isn't present or it
 667                                # is not reachable from a ref.
 668                                is_tip_reachable "$sm_path" "$sha1" ||
 669                                fetch_in_submodule "$sm_path" $depth ||
 670                                die "$(eval_gettext "Unable to fetch in submodule path '\$displaypath'")"
 671
 672                                # Now we tried the usual fetch, but $sha1 may
 673                                # not be reachable from any of the refs
 674                                is_tip_reachable "$sm_path" "$sha1" ||
 675                                fetch_in_submodule "$sm_path" $depth "$sha1" ||
 676                                die "$(eval_gettext "Fetched in submodule path '\$displaypath', but it did not contain \$sha1. Direct fetching of that commit failed.")"
 677                        fi
 678
 679                        must_die_on_failure=
 680                        case "$update_module" in
 681                        checkout)
 682                                command="git checkout $subforce -q"
 683                                die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$displaypath'")"
 684                                say_msg="$(eval_gettext "Submodule path '\$displaypath': checked out '\$sha1'")"
 685                                ;;
 686                        rebase)
 687                                command="git rebase"
 688                                die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$displaypath'")"
 689                                say_msg="$(eval_gettext "Submodule path '\$displaypath': rebased into '\$sha1'")"
 690                                must_die_on_failure=yes
 691                                ;;
 692                        merge)
 693                                command="git merge"
 694                                die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$displaypath'")"
 695                                say_msg="$(eval_gettext "Submodule path '\$displaypath': merged in '\$sha1'")"
 696                                must_die_on_failure=yes
 697                                ;;
 698                        !*)
 699                                command="${update_module#!}"
 700                                die_msg="$(eval_gettext "Execution of '\$command \$sha1' failed in submodule path '\$displaypath'")"
 701                                say_msg="$(eval_gettext "Submodule path '\$displaypath': '\$command \$sha1'")"
 702                                must_die_on_failure=yes
 703                                ;;
 704                        *)
 705                                die "$(eval_gettext "Invalid update mode '$update_module' for submodule '$name'")"
 706                        esac
 707
 708                        if (sanitize_submodule_env; cd "$sm_path" && $command "$sha1")
 709                        then
 710                                say "$say_msg"
 711                        elif test -n "$must_die_on_failure"
 712                        then
 713                                die_with_status 2 "$die_msg"
 714                        else
 715                                err="${err};$die_msg"
 716                                continue
 717                        fi
 718                fi
 719
 720                if test -n "$recursive"
 721                then
 722                        (
 723                                prefix=$(git submodule--helper relative-path "$prefix$sm_path/" "$wt_prefix")
 724                                wt_prefix=
 725                                sanitize_submodule_env
 726                                cd "$sm_path" &&
 727                                eval cmd_update
 728                        )
 729                        res=$?
 730                        if test $res -gt 0
 731                        then
 732                                die_msg="$(eval_gettext "Failed to recurse into submodule path '\$displaypath'")"
 733                                if test $res -ne 2
 734                                then
 735                                        err="${err};$die_msg"
 736                                        continue
 737                                else
 738                                        die_with_status $res "$die_msg"
 739                                fi
 740                        fi
 741                fi
 742        done
 743
 744        if test -n "$err"
 745        then
 746                OIFS=$IFS
 747                IFS=';'
 748                for e in $err
 749                do
 750                        if test -n "$e"
 751                        then
 752                                echo >&2 "$e"
 753                        fi
 754                done
 755                IFS=$OIFS
 756                exit 1
 757        fi
 758        }
 759}
 760
 761set_name_rev () {
 762        revname=$( (
 763                sanitize_submodule_env
 764                cd "$1" && {
 765                        git describe "$2" 2>/dev/null ||
 766                        git describe --tags "$2" 2>/dev/null ||
 767                        git describe --contains "$2" 2>/dev/null ||
 768                        git describe --all --always "$2"
 769                }
 770        ) )
 771        test -z "$revname" || revname=" ($revname)"
 772}
 773#
 774# Show commit summary for submodules in index or working tree
 775#
 776# If '--cached' is given, show summary between index and given commit,
 777# or between working tree and given commit
 778#
 779# $@ = [commit (default 'HEAD'),] requested paths (default all)
 780#
 781cmd_summary() {
 782        summary_limit=-1
 783        for_status=
 784        diff_cmd=diff-index
 785
 786        # parse $args after "submodule ... summary".
 787        while test $# -ne 0
 788        do
 789                case "$1" in
 790                --cached)
 791                        cached="$1"
 792                        ;;
 793                --files)
 794                        files="$1"
 795                        ;;
 796                --for-status)
 797                        for_status="$1"
 798                        ;;
 799                -n|--summary-limit)
 800                        summary_limit="$2"
 801                        isnumber "$summary_limit" || usage
 802                        shift
 803                        ;;
 804                --summary-limit=*)
 805                        summary_limit="${1#--summary-limit=}"
 806                        isnumber "$summary_limit" || usage
 807                        ;;
 808                --)
 809                        shift
 810                        break
 811                        ;;
 812                -*)
 813                        usage
 814                        ;;
 815                *)
 816                        break
 817                        ;;
 818                esac
 819                shift
 820        done
 821
 822        test $summary_limit = 0 && return
 823
 824        if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 825        then
 826                head=$rev
 827                test $# = 0 || shift
 828        elif test -z "$1" || test "$1" = "HEAD"
 829        then
 830                # before the first commit: compare with an empty tree
 831                head=$(git hash-object -w -t tree --stdin </dev/null)
 832                test -z "$1" || shift
 833        else
 834                head="HEAD"
 835        fi
 836
 837        if [ -n "$files" ]
 838        then
 839                test -n "$cached" &&
 840                die "$(gettext "The --cached option cannot be used with the --files option")"
 841                diff_cmd=diff-files
 842                head=
 843        fi
 844
 845        cd_to_toplevel
 846        eval "set $(git rev-parse --sq --prefix "$wt_prefix" -- "$@")"
 847        # Get modified modules cared by user
 848        modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 849                sane_egrep '^:([0-7]* )?160000' |
 850                while read -r mod_src mod_dst sha1_src sha1_dst status sm_path
 851                do
 852                        # Always show modules deleted or type-changed (blob<->module)
 853                        if test "$status" = D || test "$status" = T
 854                        then
 855                                printf '%s\n' "$sm_path"
 856                                continue
 857                        fi
 858                        # Respect the ignore setting for --for-status.
 859                        if test -n "$for_status"
 860                        then
 861                                name=$(git submodule--helper name "$sm_path")
 862                                ignore_config=$(get_submodule_config "$name" ignore none)
 863                                test $status != A && test $ignore_config = all && continue
 864                        fi
 865                        # Also show added or modified modules which are checked out
 866                        GIT_DIR="$sm_path/.git" git rev-parse --git-dir >/dev/null 2>&1 &&
 867                        printf '%s\n' "$sm_path"
 868                done
 869        )
 870
 871        test -z "$modules" && return
 872
 873        git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 874        sane_egrep '^:([0-7]* )?160000' |
 875        cut -c2- |
 876        while read -r mod_src mod_dst sha1_src sha1_dst status name
 877        do
 878                if test -z "$cached" &&
 879                        test $sha1_dst = 0000000000000000000000000000000000000000
 880                then
 881                        case "$mod_dst" in
 882                        160000)
 883                                sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 884                                ;;
 885                        100644 | 100755 | 120000)
 886                                sha1_dst=$(git hash-object $name)
 887                                ;;
 888                        000000)
 889                                ;; # removed
 890                        *)
 891                                # unexpected type
 892                                eval_gettextln "unexpected mode \$mod_dst" >&2
 893                                continue ;;
 894                        esac
 895                fi
 896                missing_src=
 897                missing_dst=
 898
 899                test $mod_src = 160000 &&
 900                ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_src^0 >/dev/null &&
 901                missing_src=t
 902
 903                test $mod_dst = 160000 &&
 904                ! GIT_DIR="$name/.git" git rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 905                missing_dst=t
 906
 907                display_name=$(git submodule--helper relative-path "$name" "$wt_prefix")
 908
 909                total_commits=
 910                case "$missing_src,$missing_dst" in
 911                t,)
 912                        errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_src")"
 913                        ;;
 914                ,t)
 915                        errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commit \$sha1_dst")"
 916                        ;;
 917                t,t)
 918                        errmsg="$(eval_gettext "  Warn: \$display_name doesn't contain commits \$sha1_src and \$sha1_dst")"
 919                        ;;
 920                *)
 921                        errmsg=
 922                        total_commits=$(
 923                        if test $mod_src = 160000 && test $mod_dst = 160000
 924                        then
 925                                range="$sha1_src...$sha1_dst"
 926                        elif test $mod_src = 160000
 927                        then
 928                                range=$sha1_src
 929                        else
 930                                range=$sha1_dst
 931                        fi
 932                        GIT_DIR="$name/.git" \
 933                        git rev-list --first-parent $range -- | wc -l
 934                        )
 935                        total_commits=" ($(($total_commits + 0)))"
 936                        ;;
 937                esac
 938
 939                sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 940                sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 941                if test $status = T
 942                then
 943                        blob="$(gettext "blob")"
 944                        submodule="$(gettext "submodule")"
 945                        if test $mod_dst = 160000
 946                        then
 947                                echo "* $display_name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 948                        else
 949                                echo "* $display_name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 950                        fi
 951                else
 952                        echo "* $display_name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 953                fi
 954                if test -n "$errmsg"
 955                then
 956                        # Don't give error msg for modification whose dst is not submodule
 957                        # i.e. deleted or changed to blob
 958                        test $mod_dst = 160000 && echo "$errmsg"
 959                else
 960                        if test $mod_src = 160000 && test $mod_dst = 160000
 961                        then
 962                                limit=
 963                                test $summary_limit -gt 0 && limit="-$summary_limit"
 964                                GIT_DIR="$name/.git" \
 965                                git log $limit --pretty='format:  %m %s' \
 966                                --first-parent $sha1_src...$sha1_dst
 967                        elif test $mod_dst = 160000
 968                        then
 969                                GIT_DIR="$name/.git" \
 970                                git log --pretty='format:  > %s' -1 $sha1_dst
 971                        else
 972                                GIT_DIR="$name/.git" \
 973                                git log --pretty='format:  < %s' -1 $sha1_src
 974                        fi
 975                        echo
 976                fi
 977                echo
 978        done
 979}
 980#
 981# List all submodules, prefixed with:
 982#  - submodule not initialized
 983#  + different revision checked out
 984#
 985# If --cached was specified the revision in the index will be printed
 986# instead of the currently checked out revision.
 987#
 988# $@ = requested paths (default to all)
 989#
 990cmd_status()
 991{
 992        # parse $args after "submodule ... status".
 993        while test $# -ne 0
 994        do
 995                case "$1" in
 996                -q|--quiet)
 997                        GIT_QUIET=1
 998                        ;;
 999                --cached)
1000                        cached=1
1001                        ;;
1002                --recursive)
1003                        recursive=1
1004                        ;;
1005                --)
1006                        shift
1007                        break
1008                        ;;
1009                -*)
1010                        usage
1011                        ;;
1012                *)
1013                        break
1014                        ;;
1015                esac
1016                shift
1017        done
1018
1019        {
1020                git submodule--helper list --prefix "$wt_prefix" "$@" ||
1021                echo "#unmatched" $?
1022        } |
1023        while read -r mode sha1 stage sm_path
1024        do
1025                die_if_unmatched "$mode" "$sha1"
1026                name=$(git submodule--helper name "$sm_path") || exit
1027                displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1028                if test "$stage" = U
1029                then
1030                        say "U$sha1 $displaypath"
1031                        continue
1032                fi
1033                if ! git submodule--helper is-active "$sm_path" ||
1034                {
1035                        ! test -d "$sm_path"/.git &&
1036                        ! test -f "$sm_path"/.git
1037                }
1038                then
1039                        say "-$sha1 $displaypath"
1040                        continue;
1041                fi
1042                if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
1043                then
1044                        set_name_rev "$sm_path" "$sha1"
1045                        say " $sha1 $displaypath$revname"
1046                else
1047                        if test -z "$cached"
1048                        then
1049                                sha1=$(sanitize_submodule_env; cd "$sm_path" && git rev-parse --verify HEAD)
1050                        fi
1051                        set_name_rev "$sm_path" "$sha1"
1052                        say "+$sha1 $displaypath$revname"
1053                fi
1054
1055                if test -n "$recursive"
1056                then
1057                        (
1058                                prefix="$displaypath/"
1059                                sanitize_submodule_env
1060                                wt_prefix=
1061                                cd "$sm_path" &&
1062                                eval cmd_status
1063                        ) ||
1064                        die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
1065                fi
1066        done
1067}
1068#
1069# Sync remote urls for submodules
1070# This makes the value for remote.$remote.url match the value
1071# specified in .gitmodules.
1072#
1073cmd_sync()
1074{
1075        while test $# -ne 0
1076        do
1077                case "$1" in
1078                -q|--quiet)
1079                        GIT_QUIET=1
1080                        shift
1081                        ;;
1082                --recursive)
1083                        recursive=1
1084                        shift
1085                        ;;
1086                --)
1087                        shift
1088                        break
1089                        ;;
1090                -*)
1091                        usage
1092                        ;;
1093                *)
1094                        break
1095                        ;;
1096                esac
1097        done
1098        cd_to_toplevel
1099        {
1100                git submodule--helper list --prefix "$wt_prefix" "$@" ||
1101                echo "#unmatched" $?
1102        } |
1103        while read -r mode sha1 stage sm_path
1104        do
1105                die_if_unmatched "$mode" "$sha1"
1106
1107                # skip inactive submodules
1108                if ! git submodule--helper is-active "$sm_path"
1109                then
1110                        continue
1111                fi
1112
1113                name=$(git submodule--helper name "$sm_path")
1114                url=$(git config -f .gitmodules --get submodule."$name".url)
1115
1116                # Possibly a url relative to parent
1117                case "$url" in
1118                ./*|../*)
1119                        # rewrite foo/bar as ../.. to find path from
1120                        # submodule work tree to superproject work tree
1121                        up_path="$(printf '%s\n' "$sm_path" | sed "s/[^/][^/]*/../g")" &&
1122                        # guarantee a trailing /
1123                        up_path=${up_path%/}/ &&
1124                        # path from submodule work tree to submodule origin repo
1125                        sub_origin_url=$(git submodule--helper resolve-relative-url "$url" "$up_path") &&
1126                        # path from superproject work tree to submodule origin repo
1127                        super_config_url=$(git submodule--helper resolve-relative-url "$url") || exit
1128                        ;;
1129                *)
1130                        sub_origin_url="$url"
1131                        super_config_url="$url"
1132                        ;;
1133                esac
1134
1135                displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
1136                say "$(eval_gettext "Synchronizing submodule url for '\$displaypath'")"
1137                git config submodule."$name".url "$super_config_url"
1138
1139                if test -e "$sm_path"/.git
1140                then
1141                (
1142                        sanitize_submodule_env
1143                        cd "$sm_path"
1144                        remote=$(get_default_remote)
1145                        git config remote."$remote".url "$sub_origin_url"
1146
1147                        if test -n "$recursive"
1148                        then
1149                                prefix="$prefix$sm_path/"
1150                                eval cmd_sync
1151                        fi
1152                )
1153                fi
1154        done
1155}
1156
1157cmd_absorbgitdirs()
1158{
1159        git submodule--helper absorb-git-dirs --prefix "$wt_prefix" "$@"
1160}
1161
1162# This loop parses the command line arguments to find the
1163# subcommand name to dispatch.  Parsing of the subcommand specific
1164# options are primarily done by the subcommand implementations.
1165# Subcommand specific options such as --branch and --cached are
1166# parsed here as well, for backward compatibility.
1167
1168while test $# != 0 && test -z "$command"
1169do
1170        case "$1" in
1171        add | foreach | init | deinit | update | status | summary | sync | absorbgitdirs)
1172                command=$1
1173                ;;
1174        -q|--quiet)
1175                GIT_QUIET=1
1176                ;;
1177        -b|--branch)
1178                case "$2" in
1179                '')
1180                        usage
1181                        ;;
1182                esac
1183                branch="$2"; shift
1184                ;;
1185        --cached)
1186                cached="$1"
1187                ;;
1188        --)
1189                break
1190                ;;
1191        -*)
1192                usage
1193                ;;
1194        *)
1195                break
1196                ;;
1197        esac
1198        shift
1199done
1200
1201# No command word defaults to "status"
1202if test -z "$command"
1203then
1204    if test $# = 0
1205    then
1206        command=status
1207    else
1208        usage
1209    fi
1210fi
1211
1212# "-b branch" is accepted only by "add"
1213if test -n "$branch" && test "$command" != add
1214then
1215        usage
1216fi
1217
1218# "--cached" is accepted only by "status" and "summary"
1219if test -n "$cached" && test "$command" != status && test "$command" != summary
1220then
1221        usage
1222fi
1223
1224"cmd_$command" "$@"