0a3e1465e39cb9c5973718496ff6867728884ec0
   1#!/bin/sh
   2#
   3# git-submodules.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] [--reference <repository>] [--] <repository> [<path>]
   9   or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
  10   or: $dashless [--quiet] init [--] [<path>...]
  11   or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force] [--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
  12   or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>] [commit] [--] [<path>...]
  13   or: $dashless [--quiet] foreach [--recursive] <command>
  14   or: $dashless [--quiet] sync [--] [<path>...]"
  15OPTIONS_SPEC=
  16. git-sh-setup
  17. git-sh-i18n
  18. git-parse-remote
  19require_work_tree
  20
  21command=
  22branch=
  23force=
  24reference=
  25cached=
  26recursive=
  27init=
  28files=
  29nofetch=
  30update=
  31prefix=
  32
  33# The function takes at most 2 arguments. The first argument is the
  34# URL that navigates to the submodule origin repo. When relative, this URL
  35# is relative to the superproject origin URL repo. The second up_path
  36# argument, if specified, is the relative path that navigates
  37# from the submodule working tree to the superproject working tree.
  38#
  39# The output of the function is the origin URL of the submodule.
  40#
  41# The output will either be an absolute URL or filesystem path (if the
  42# superproject origin URL is an absolute URL or filesystem path,
  43# respectively) or a relative file system path (if the superproject
  44# origin URL is a relative file system path).
  45#
  46# When the output is a relative file system path, the path is either
  47# relative to the submodule working tree, if up_path is specified, or to
  48# the superproject working tree otherwise.
  49resolve_relative_url ()
  50{
  51        remote=$(get_default_remote)
  52        remoteurl=$(git config "remote.$remote.url") ||
  53                remoteurl=$(pwd) # the repository is its own authoritative upstream
  54        url="$1"
  55        remoteurl=${remoteurl%/}
  56        sep=/
  57        up_path="$2"
  58
  59        case "$remoteurl" in
  60        *:*|/*)
  61                is_relative=
  62                ;;
  63        *)
  64                is_relative=t
  65                ;;
  66        esac
  67
  68        while test -n "$url"
  69        do
  70                case "$url" in
  71                ../*)
  72                        url="${url#../}"
  73                        case "$remoteurl" in
  74                        */*)
  75                                remoteurl="${remoteurl%/*}"
  76                                ;;
  77                        *:*)
  78                                remoteurl="${remoteurl%:*}"
  79                                sep=:
  80                                ;;
  81                        *)
  82                                die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
  83                                ;;
  84                        esac
  85                        ;;
  86                ./*)
  87                        url="${url#./}"
  88                        ;;
  89                *)
  90                        break;;
  91                esac
  92        done
  93        echo "${is_relative:+${up_path}}$remoteurl$sep${url%/}"
  94}
  95
  96#
  97# Get submodule info for registered submodules
  98# $@ = path to limit submodule list
  99#
 100module_list()
 101{
 102        git ls-files --error-unmatch --stage -- "$@" |
 103        perl -e '
 104        my %unmerged = ();
 105        my ($null_sha1) = ("0" x 40);
 106        while (<STDIN>) {
 107                chomp;
 108                my ($mode, $sha1, $stage, $path) =
 109                        /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
 110                next unless $mode eq "160000";
 111                if ($stage ne "0") {
 112                        if (!$unmerged{$path}++) {
 113                                print "$mode $null_sha1 U\t$path\n";
 114                        }
 115                        next;
 116                }
 117                print "$_\n";
 118        }
 119        '
 120}
 121
 122#
 123# Map submodule path to submodule name
 124#
 125# $1 = path
 126#
 127module_name()
 128{
 129        # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
 130        sm_path="$1"
 131        re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 132        name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 133                sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 134        test -z "$name" &&
 135        die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$sm_path'")"
 136        echo "$name"
 137}
 138
 139#
 140# Clone a submodule
 141#
 142# Prior to calling, cmd_update checks that a possibly existing
 143# path is not a git repository.
 144# Likewise, cmd_add checks that path does not exist at all,
 145# since it is the location of a new submodule.
 146#
 147module_clone()
 148{
 149        sm_path=$1
 150        url=$2
 151        reference="$3"
 152        quiet=
 153        if test -n "$GIT_QUIET"
 154        then
 155                quiet=-q
 156        fi
 157
 158        gitdir=
 159        gitdir_base=
 160        name=$(module_name "$sm_path" 2>/dev/null)
 161        test -n "$name" || name="$sm_path"
 162        base_name=$(dirname "$name")
 163
 164        gitdir=$(git rev-parse --git-dir)
 165        gitdir_base="$gitdir/modules/$base_name"
 166        gitdir="$gitdir/modules/$name"
 167
 168        if test -d "$gitdir"
 169        then
 170                mkdir -p "$sm_path"
 171                rm -f "$gitdir/index"
 172        else
 173                mkdir -p "$gitdir_base"
 174                git clone $quiet -n ${reference:+"$reference"} \
 175                        --separate-git-dir "$gitdir" "$url" "$sm_path" ||
 176                die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
 177        fi
 178
 179        a=$(cd "$gitdir" && pwd)/
 180        b=$(cd "$sm_path" && pwd)/
 181        # normalize Windows-style absolute paths to POSIX-style absolute paths
 182        case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
 183        case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
 184        # Remove all common leading directories after a sanity check
 185        if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
 186                die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
 187        fi
 188        while test "${a%%/*}" = "${b%%/*}"
 189        do
 190                a=${a#*/}
 191                b=${b#*/}
 192        done
 193        # Now chop off the trailing '/'s that were added in the beginning
 194        a=${a%/}
 195        b=${b%/}
 196
 197        # Turn each leading "*/" component into "../"
 198        rel=$(echo $b | sed -e 's|[^/][^/]*|..|g')
 199        echo "gitdir: $rel/$a" >"$sm_path/.git"
 200
 201        rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
 202        (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 203}
 204
 205#
 206# Add a new submodule to the working tree, .gitmodules and the index
 207#
 208# $@ = repo path
 209#
 210# optional branch is stored in global branch variable
 211#
 212cmd_add()
 213{
 214        # parse $args after "submodule ... add".
 215        while test $# -ne 0
 216        do
 217                case "$1" in
 218                -b | --branch)
 219                        case "$2" in '') usage ;; esac
 220                        branch=$2
 221                        shift
 222                        ;;
 223                -f | --force)
 224                        force=$1
 225                        ;;
 226                -q|--quiet)
 227                        GIT_QUIET=1
 228                        ;;
 229                --reference)
 230                        case "$2" in '') usage ;; esac
 231                        reference="--reference=$2"
 232                        shift
 233                        ;;
 234                --reference=*)
 235                        reference="$1"
 236                        shift
 237                        ;;
 238                --)
 239                        shift
 240                        break
 241                        ;;
 242                -*)
 243                        usage
 244                        ;;
 245                *)
 246                        break
 247                        ;;
 248                esac
 249                shift
 250        done
 251
 252        repo=$1
 253        sm_path=$2
 254
 255        if test -z "$sm_path"; then
 256                sm_path=$(echo "$repo" |
 257                        sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 258        fi
 259
 260        if test -z "$repo" -o -z "$sm_path"; then
 261                usage
 262        fi
 263
 264        # assure repo is absolute or relative to parent
 265        case "$repo" in
 266        ./*|../*)
 267                # dereference source url relative to parent's url
 268                realrepo=$(resolve_relative_url "$repo") || exit
 269                ;;
 270        *:*|/*)
 271                # absolute url
 272                realrepo=$repo
 273                ;;
 274        *)
 275                die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 276        ;;
 277        esac
 278
 279        # normalize path:
 280        # multiple //; leading ./; /./; /../; trailing /
 281        sm_path=$(printf '%s/\n' "$sm_path" |
 282                sed -e '
 283                        s|//*|/|g
 284                        s|^\(\./\)*||
 285                        s|/\./|/|g
 286                        :start
 287                        s|\([^/]*\)/\.\./||
 288                        tstart
 289                        s|/*$||
 290                ')
 291        git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 292        die "$(eval_gettext "'\$sm_path' already exists in the index")"
 293
 294        if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 295        then
 296                eval_gettextln "The following path is ignored by one of your .gitignore files:
 297\$sm_path
 298Use -f if you really want to add it." >&2
 299                exit 1
 300        fi
 301
 302        # perhaps the path exists and is already a git repo, else clone it
 303        if test -e "$sm_path"
 304        then
 305                if test -d "$sm_path"/.git -o -f "$sm_path"/.git
 306                then
 307                        eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 308                else
 309                        die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 310                fi
 311
 312        else
 313
 314                module_clone "$sm_path" "$realrepo" "$reference" || exit
 315                (
 316                        clear_local_git_env
 317                        cd "$sm_path" &&
 318                        # ash fails to wordsplit ${branch:+-b "$branch"...}
 319                        case "$branch" in
 320                        '') git checkout -f -q ;;
 321                        ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 322                        esac
 323                ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 324        fi
 325        git config submodule."$sm_path".url "$realrepo"
 326
 327        git add $force "$sm_path" ||
 328        die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 329
 330        git config -f .gitmodules submodule."$sm_path".path "$sm_path" &&
 331        git config -f .gitmodules submodule."$sm_path".url "$repo" &&
 332        git add --force .gitmodules ||
 333        die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 334}
 335
 336#
 337# Execute an arbitrary command sequence in each checked out
 338# submodule
 339#
 340# $@ = command to execute
 341#
 342cmd_foreach()
 343{
 344        # parse $args after "submodule ... foreach".
 345        while test $# -ne 0
 346        do
 347                case "$1" in
 348                -q|--quiet)
 349                        GIT_QUIET=1
 350                        ;;
 351                --recursive)
 352                        recursive=1
 353                        ;;
 354                -*)
 355                        usage
 356                        ;;
 357                *)
 358                        break
 359                        ;;
 360                esac
 361                shift
 362        done
 363
 364        toplevel=$(pwd)
 365
 366        # dup stdin so that it can be restored when running the external
 367        # command in the subshell (and a recursive call to this function)
 368        exec 3<&0
 369
 370        module_list |
 371        while read mode sha1 stage sm_path
 372        do
 373                if test -e "$sm_path"/.git
 374                then
 375                        say "$(eval_gettext "Entering '\$prefix\$sm_path'")"
 376                        name=$(module_name "$sm_path")
 377                        (
 378                                prefix="$prefix$sm_path/"
 379                                clear_local_git_env
 380                                # we make $path available to scripts ...
 381                                path=$sm_path
 382                                cd "$sm_path" &&
 383                                eval "$@" &&
 384                                if test -n "$recursive"
 385                                then
 386                                        cmd_foreach "--recursive" "$@"
 387                                fi
 388                        ) <&3 3<&- ||
 389                        die "$(eval_gettext "Stopping at '\$sm_path'; script returned non-zero status.")"
 390                fi
 391        done
 392}
 393
 394#
 395# Register submodules in .git/config
 396#
 397# $@ = requested paths (default to all)
 398#
 399cmd_init()
 400{
 401        # parse $args after "submodule ... init".
 402        while test $# -ne 0
 403        do
 404                case "$1" in
 405                -q|--quiet)
 406                        GIT_QUIET=1
 407                        ;;
 408                --)
 409                        shift
 410                        break
 411                        ;;
 412                -*)
 413                        usage
 414                        ;;
 415                *)
 416                        break
 417                        ;;
 418                esac
 419                shift
 420        done
 421
 422        module_list "$@" |
 423        while read mode sha1 stage sm_path
 424        do
 425                # Skip already registered paths
 426                name=$(module_name "$sm_path") || exit
 427                if test -z "$(git config "submodule.$name.url")"
 428                then
 429                        url=$(git config -f .gitmodules submodule."$name".url)
 430                        test -z "$url" &&
 431                        die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"
 432
 433                        # Possibly a url relative to parent
 434                        case "$url" in
 435                        ./*|../*)
 436                                url=$(resolve_relative_url "$url") || exit
 437                                ;;
 438                        esac
 439                        git config submodule."$name".url "$url" ||
 440                        die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"
 441                fi
 442
 443                # Copy "update" setting when it is not set yet
 444                upd="$(git config -f .gitmodules submodule."$name".update)"
 445                test -z "$upd" ||
 446                test -n "$(git config submodule."$name".update)" ||
 447                git config submodule."$name".update "$upd" ||
 448                die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
 449
 450                say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
 451        done
 452}
 453
 454#
 455# Update each submodule path to correct revision, using clone and checkout as needed
 456#
 457# $@ = requested paths (default to all)
 458#
 459cmd_update()
 460{
 461        # parse $args after "submodule ... update".
 462        orig_flags=
 463        while test $# -ne 0
 464        do
 465                case "$1" in
 466                -q|--quiet)
 467                        GIT_QUIET=1
 468                        ;;
 469                -i|--init)
 470                        init=1
 471                        ;;
 472                -N|--no-fetch)
 473                        nofetch=1
 474                        ;;
 475                -f|--force)
 476                        force=$1
 477                        ;;
 478                -r|--rebase)
 479                        update="rebase"
 480                        ;;
 481                --reference)
 482                        case "$2" in '') usage ;; esac
 483                        reference="--reference=$2"
 484                        orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 485                        shift
 486                        ;;
 487                --reference=*)
 488                        reference="$1"
 489                        ;;
 490                -m|--merge)
 491                        update="merge"
 492                        ;;
 493                --recursive)
 494                        recursive=1
 495                        ;;
 496                --checkout)
 497                        update="checkout"
 498                        ;;
 499                --)
 500                        shift
 501                        break
 502                        ;;
 503                -*)
 504                        usage
 505                        ;;
 506                *)
 507                        break
 508                        ;;
 509                esac
 510                orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 511                shift
 512        done
 513
 514        if test -n "$init"
 515        then
 516                cmd_init "--" "$@" || return
 517        fi
 518
 519        cloned_modules=
 520        module_list "$@" | {
 521        err=
 522        while read mode sha1 stage sm_path
 523        do
 524                if test "$stage" = U
 525                then
 526                        echo >&2 "Skipping unmerged submodule $sm_path"
 527                        continue
 528                fi
 529                name=$(module_name "$sm_path") || exit
 530                url=$(git config submodule."$name".url)
 531                if ! test -z "$update"
 532                then
 533                        update_module=$update
 534                else
 535                        update_module=$(git config submodule."$name".update)
 536                fi
 537
 538                if test "$update_module" = "none"
 539                then
 540                        echo "Skipping submodule '$sm_path'"
 541                        continue
 542                fi
 543
 544                if test -z "$url"
 545                then
 546                        # Only mention uninitialized submodules when its
 547                        # path have been specified
 548                        test "$#" != "0" &&
 549                        say "$(eval_gettext "Submodule path '\$sm_path' not initialized
 550Maybe you want to use 'update --init'?")"
 551                        continue
 552                fi
 553
 554                if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 555                then
 556                        module_clone "$sm_path" "$url" "$reference"|| exit
 557                        cloned_modules="$cloned_modules;$name"
 558                        subsha1=
 559                else
 560                        subsha1=$(clear_local_git_env; cd "$sm_path" &&
 561                                git rev-parse --verify HEAD) ||
 562                        die "$(eval_gettext "Unable to find current revision in submodule path '\$sm_path'")"
 563                fi
 564
 565                if test "$subsha1" != "$sha1"
 566                then
 567                        subforce=$force
 568                        # If we don't already have a -f flag and the submodule has never been checked out
 569                        if test -z "$subsha1" -a -z "$force"
 570                        then
 571                                subforce="-f"
 572                        fi
 573
 574                        if test -z "$nofetch"
 575                        then
 576                                # Run fetch only if $sha1 isn't present or it
 577                                # is not reachable from a ref.
 578                                (clear_local_git_env; cd "$sm_path" &&
 579                                        ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 580                                         test -z "$rev") || git-fetch)) ||
 581                                die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 582                        fi
 583
 584                        # Is this something we just cloned?
 585                        case ";$cloned_modules;" in
 586                        *";$name;"*)
 587                                # then there is no local change to integrate
 588                                update_module= ;;
 589                        esac
 590
 591                        must_die_on_failure=
 592                        case "$update_module" in
 593                        rebase)
 594                                command="git rebase"
 595                                die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$sm_path'")"
 596                                say_msg="$(eval_gettext "Submodule path '\$sm_path': rebased into '\$sha1'")"
 597                                must_die_on_failure=yes
 598                                ;;
 599                        merge)
 600                                command="git merge"
 601                                die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$sm_path'")"
 602                                say_msg="$(eval_gettext "Submodule path '\$sm_path': merged in '\$sha1'")"
 603                                must_die_on_failure=yes
 604                                ;;
 605                        *)
 606                                command="git checkout $subforce -q"
 607                                die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$sm_path'")"
 608                                say_msg="$(eval_gettext "Submodule path '\$sm_path': checked out '\$sha1'")"
 609                                ;;
 610                        esac
 611
 612                        if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
 613                        then
 614                                say "$say_msg"
 615                        elif test -n "$must_die_on_failure"
 616                        then
 617                                die_with_status 2 "$die_msg"
 618                        else
 619                                err="${err};$die_msg"
 620                                continue
 621                        fi
 622                fi
 623
 624                if test -n "$recursive"
 625                then
 626                        (clear_local_git_env; cd "$sm_path" && eval cmd_update "$orig_flags")
 627                        res=$?
 628                        if test $res -gt 0
 629                        then
 630                                die_msg="$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 631                                if test $res -eq 1
 632                                then
 633                                        err="${err};$die_msg"
 634                                        continue
 635                                else
 636                                        die_with_status $res "$die_msg"
 637                                fi
 638                        fi
 639                fi
 640        done
 641
 642        if test -n "$err"
 643        then
 644                OIFS=$IFS
 645                IFS=';'
 646                for e in $err
 647                do
 648                        if test -n "$e"
 649                        then
 650                                echo >&2 "$e"
 651                        fi
 652                done
 653                IFS=$OIFS
 654                exit 1
 655        fi
 656        }
 657}
 658
 659set_name_rev () {
 660        revname=$( (
 661                clear_local_git_env
 662                cd "$1" && {
 663                        git describe "$2" 2>/dev/null ||
 664                        git describe --tags "$2" 2>/dev/null ||
 665                        git describe --contains "$2" 2>/dev/null ||
 666                        git describe --all --always "$2"
 667                }
 668        ) )
 669        test -z "$revname" || revname=" ($revname)"
 670}
 671#
 672# Show commit summary for submodules in index or working tree
 673#
 674# If '--cached' is given, show summary between index and given commit,
 675# or between working tree and given commit
 676#
 677# $@ = [commit (default 'HEAD'),] requested paths (default all)
 678#
 679cmd_summary() {
 680        summary_limit=-1
 681        for_status=
 682        diff_cmd=diff-index
 683
 684        # parse $args after "submodule ... summary".
 685        while test $# -ne 0
 686        do
 687                case "$1" in
 688                --cached)
 689                        cached="$1"
 690                        ;;
 691                --files)
 692                        files="$1"
 693                        ;;
 694                --for-status)
 695                        for_status="$1"
 696                        ;;
 697                -n|--summary-limit)
 698                        if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 699                        then
 700                                :
 701                        else
 702                                usage
 703                        fi
 704                        shift
 705                        ;;
 706                --)
 707                        shift
 708                        break
 709                        ;;
 710                -*)
 711                        usage
 712                        ;;
 713                *)
 714                        break
 715                        ;;
 716                esac
 717                shift
 718        done
 719
 720        test $summary_limit = 0 && return
 721
 722        if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 723        then
 724                head=$rev
 725                test $# = 0 || shift
 726        elif test -z "$1" -o "$1" = "HEAD"
 727        then
 728                # before the first commit: compare with an empty tree
 729                head=$(git hash-object -w -t tree --stdin </dev/null)
 730                test -z "$1" || shift
 731        else
 732                head="HEAD"
 733        fi
 734
 735        if [ -n "$files" ]
 736        then
 737                test -n "$cached" &&
 738                die "$(gettext -- "--cached cannot be used with --files")"
 739                diff_cmd=diff-files
 740                head=
 741        fi
 742
 743        cd_to_toplevel
 744        # Get modified modules cared by user
 745        modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 746                sane_egrep '^:([0-7]* )?160000' |
 747                while read mod_src mod_dst sha1_src sha1_dst status name
 748                do
 749                        # Always show modules deleted or type-changed (blob<->module)
 750                        test $status = D -o $status = T && echo "$name" && continue
 751                        # Also show added or modified modules which are checked out
 752                        GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 753                        echo "$name"
 754                done
 755        )
 756
 757        test -z "$modules" && return
 758
 759        git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 760        sane_egrep '^:([0-7]* )?160000' |
 761        cut -c2- |
 762        while read mod_src mod_dst sha1_src sha1_dst status name
 763        do
 764                if test -z "$cached" &&
 765                        test $sha1_dst = 0000000000000000000000000000000000000000
 766                then
 767                        case "$mod_dst" in
 768                        160000)
 769                                sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 770                                ;;
 771                        100644 | 100755 | 120000)
 772                                sha1_dst=$(git hash-object $name)
 773                                ;;
 774                        000000)
 775                                ;; # removed
 776                        *)
 777                                # unexpected type
 778                                eval_gettextln "unexpected mode \$mod_dst" >&2
 779                                continue ;;
 780                        esac
 781                fi
 782                missing_src=
 783                missing_dst=
 784
 785                test $mod_src = 160000 &&
 786                ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 787                missing_src=t
 788
 789                test $mod_dst = 160000 &&
 790                ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 791                missing_dst=t
 792
 793                total_commits=
 794                case "$missing_src,$missing_dst" in
 795                t,)
 796                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 797                        ;;
 798                ,t)
 799                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 800                        ;;
 801                t,t)
 802                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 803                        ;;
 804                *)
 805                        errmsg=
 806                        total_commits=$(
 807                        if test $mod_src = 160000 -a $mod_dst = 160000
 808                        then
 809                                range="$sha1_src...$sha1_dst"
 810                        elif test $mod_src = 160000
 811                        then
 812                                range=$sha1_src
 813                        else
 814                                range=$sha1_dst
 815                        fi
 816                        GIT_DIR="$name/.git" \
 817                        git rev-list --first-parent $range -- | wc -l
 818                        )
 819                        total_commits=" ($(($total_commits + 0)))"
 820                        ;;
 821                esac
 822
 823                sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 824                sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 825                if test $status = T
 826                then
 827                        blob="$(gettext "blob")"
 828                        submodule="$(gettext "submodule")"
 829                        if test $mod_dst = 160000
 830                        then
 831                                echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 832                        else
 833                                echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 834                        fi
 835                else
 836                        echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 837                fi
 838                if test -n "$errmsg"
 839                then
 840                        # Don't give error msg for modification whose dst is not submodule
 841                        # i.e. deleted or changed to blob
 842                        test $mod_dst = 160000 && echo "$errmsg"
 843                else
 844                        if test $mod_src = 160000 -a $mod_dst = 160000
 845                        then
 846                                limit=
 847                                test $summary_limit -gt 0 && limit="-$summary_limit"
 848                                GIT_DIR="$name/.git" \
 849                                git log $limit --pretty='format:  %m %s' \
 850                                --first-parent $sha1_src...$sha1_dst
 851                        elif test $mod_dst = 160000
 852                        then
 853                                GIT_DIR="$name/.git" \
 854                                git log --pretty='format:  > %s' -1 $sha1_dst
 855                        else
 856                                GIT_DIR="$name/.git" \
 857                                git log --pretty='format:  < %s' -1 $sha1_src
 858                        fi
 859                        echo
 860                fi
 861                echo
 862        done |
 863        if test -n "$for_status"; then
 864                if [ -n "$files" ]; then
 865                        gettextln "# Submodules changed but not updated:"
 866                else
 867                        gettextln "# Submodule changes to be committed:"
 868                fi
 869                echo "#"
 870                sed -e 's|^|# |' -e 's|^# $|#|'
 871        else
 872                cat
 873        fi
 874}
 875#
 876# List all submodules, prefixed with:
 877#  - submodule not initialized
 878#  + different revision checked out
 879#
 880# If --cached was specified the revision in the index will be printed
 881# instead of the currently checked out revision.
 882#
 883# $@ = requested paths (default to all)
 884#
 885cmd_status()
 886{
 887        # parse $args after "submodule ... status".
 888        orig_flags=
 889        while test $# -ne 0
 890        do
 891                case "$1" in
 892                -q|--quiet)
 893                        GIT_QUIET=1
 894                        ;;
 895                --cached)
 896                        cached=1
 897                        ;;
 898                --recursive)
 899                        recursive=1
 900                        ;;
 901                --)
 902                        shift
 903                        break
 904                        ;;
 905                -*)
 906                        usage
 907                        ;;
 908                *)
 909                        break
 910                        ;;
 911                esac
 912                orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 913                shift
 914        done
 915
 916        module_list "$@" |
 917        while read mode sha1 stage sm_path
 918        do
 919                name=$(module_name "$sm_path") || exit
 920                url=$(git config submodule."$name".url)
 921                displaypath="$prefix$sm_path"
 922                if test "$stage" = U
 923                then
 924                        say "U$sha1 $displaypath"
 925                        continue
 926                fi
 927                if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 928                then
 929                        say "-$sha1 $displaypath"
 930                        continue;
 931                fi
 932                set_name_rev "$sm_path" "$sha1"
 933                if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
 934                then
 935                        say " $sha1 $displaypath$revname"
 936                else
 937                        if test -z "$cached"
 938                        then
 939                                sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
 940                                set_name_rev "$sm_path" "$sha1"
 941                        fi
 942                        say "+$sha1 $displaypath$revname"
 943                fi
 944
 945                if test -n "$recursive"
 946                then
 947                        (
 948                                prefix="$displaypath/"
 949                                clear_local_git_env
 950                                cd "$sm_path" &&
 951                                eval cmd_status "$orig_args"
 952                        ) ||
 953                        die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 954                fi
 955        done
 956}
 957#
 958# Sync remote urls for submodules
 959# This makes the value for remote.$remote.url match the value
 960# specified in .gitmodules.
 961#
 962cmd_sync()
 963{
 964        while test $# -ne 0
 965        do
 966                case "$1" in
 967                -q|--quiet)
 968                        GIT_QUIET=1
 969                        shift
 970                        ;;
 971                --)
 972                        shift
 973                        break
 974                        ;;
 975                -*)
 976                        usage
 977                        ;;
 978                *)
 979                        break
 980                        ;;
 981                esac
 982        done
 983        cd_to_toplevel
 984        module_list "$@" |
 985        while read mode sha1 stage sm_path
 986        do
 987                name=$(module_name "$sm_path")
 988                url=$(git config -f .gitmodules --get submodule."$name".url)
 989
 990                # Possibly a url relative to parent
 991                case "$url" in
 992                ./*|../*)
 993                        # rewrite foo/bar as ../.. to find path from
 994                        # submodule work tree to superproject work tree
 995                        up_path="$(echo "$sm_path" | sed "s/[^/][^/]*/../g")" &&
 996                        # guarantee a trailing /
 997                        up_path=${up_path%/}/ &&
 998                        # path from submodule work tree to submodule origin repo
 999                        sub_origin_url=$(resolve_relative_url "$url" "$up_path") &&
1000                        # path from superproject work tree to submodule origin repo
1001                        super_config_url=$(resolve_relative_url "$url") || exit
1002                        ;;
1003                *)
1004                        sub_origin_url="$url"
1005                        super_config_url="$url"
1006                        ;;
1007                esac
1008
1009                if git config "submodule.$name.url" >/dev/null 2>/dev/null
1010                then
1011                        say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
1012                        git config submodule."$name".url "$super_config_url"
1013
1014                        if test -e "$sm_path"/.git
1015                        then
1016                        (
1017                                clear_local_git_env
1018                                cd "$sm_path"
1019                                remote=$(get_default_remote)
1020                                git config remote."$remote".url "$sub_origin_url"
1021                        )
1022                        fi
1023                fi
1024        done
1025}
1026
1027# This loop parses the command line arguments to find the
1028# subcommand name to dispatch.  Parsing of the subcommand specific
1029# options are primarily done by the subcommand implementations.
1030# Subcommand specific options such as --branch and --cached are
1031# parsed here as well, for backward compatibility.
1032
1033while test $# != 0 && test -z "$command"
1034do
1035        case "$1" in
1036        add | foreach | init | update | status | summary | sync)
1037                command=$1
1038                ;;
1039        -q|--quiet)
1040                GIT_QUIET=1
1041                ;;
1042        -b|--branch)
1043                case "$2" in
1044                '')
1045                        usage
1046                        ;;
1047                esac
1048                branch="$2"; shift
1049                ;;
1050        --cached)
1051                cached="$1"
1052                ;;
1053        --)
1054                break
1055                ;;
1056        -*)
1057                usage
1058                ;;
1059        *)
1060                break
1061                ;;
1062        esac
1063        shift
1064done
1065
1066# No command word defaults to "status"
1067test -n "$command" || command=status
1068
1069# "-b branch" is accepted only by "add"
1070if test -n "$branch" && test "$command" != add
1071then
1072        usage
1073fi
1074
1075# "--cached" is accepted only by "status" and "summary"
1076if test -n "$cached" && test "$command" != status -a "$command" != summary
1077then
1078        usage
1079fi
1080
1081"cmd_$command" "$@"