git-submodule.shon commit status: don't suggest "git rm" or "git add" if not appropriate (96b0ec1)
   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: $dashless [--quiet] sync [--] [<path>...]"
  15OPTIONS_SPEC=
  16. git-sh-setup
  17. git-sh-i18n
  18. git-parse-remote
  19require_work_tree
  20
  21command=
  22branch=
  23force=
  24reference=
  25cached=
  26recursive=
  27init=
  28files=
  29nofetch=
  30update=
  31prefix=
  32
  33# Resolve relative url by appending to parent's url
  34resolve_relative_url ()
  35{
  36        remote=$(get_default_remote)
  37        remoteurl=$(git config "remote.$remote.url") ||
  38                remoteurl=$(pwd) # the repository is its own authoritative upstream
  39        url="$1"
  40        remoteurl=${remoteurl%/}
  41        sep=/
  42        while test -n "$url"
  43        do
  44                case "$url" in
  45                ../*)
  46                        url="${url#../}"
  47                        case "$remoteurl" in
  48                        */*)
  49                                remoteurl="${remoteurl%/*}"
  50                                ;;
  51                        *:*)
  52                                remoteurl="${remoteurl%:*}"
  53                                sep=:
  54                                ;;
  55                        *)
  56                                die "$(eval_gettext "cannot strip one component off url '\$remoteurl'")"
  57                                ;;
  58                        esac
  59                        ;;
  60                ./*)
  61                        url="${url#./}"
  62                        ;;
  63                *)
  64                        break;;
  65                esac
  66        done
  67        echo "$remoteurl$sep${url%/}"
  68}
  69
  70#
  71# Get submodule info for registered submodules
  72# $@ = path to limit submodule list
  73#
  74module_list()
  75{
  76        git ls-files --error-unmatch --stage -- "$@" |
  77        perl -e '
  78        my %unmerged = ();
  79        my ($null_sha1) = ("0" x 40);
  80        while (<STDIN>) {
  81                chomp;
  82                my ($mode, $sha1, $stage, $path) =
  83                        /^([0-7]+) ([0-9a-f]{40}) ([0-3])\t(.*)$/;
  84                next unless $mode eq "160000";
  85                if ($stage ne "0") {
  86                        if (!$unmerged{$path}++) {
  87                                print "$mode $null_sha1 U\t$path\n";
  88                        }
  89                        next;
  90                }
  91                print "$_\n";
  92        }
  93        '
  94}
  95
  96#
  97# Map submodule path to submodule name
  98#
  99# $1 = path
 100#
 101module_name()
 102{
 103        # Do we have "submodule.<something>.path = $1" defined in .gitmodules file?
 104        sm_path="$1"
 105        re=$(printf '%s\n' "$1" | sed -e 's/[].[^$\\*]/\\&/g')
 106        name=$( git config -f .gitmodules --get-regexp '^submodule\..*\.path$' |
 107                sed -n -e 's|^submodule\.\(.*\)\.path '"$re"'$|\1|p' )
 108        test -z "$name" &&
 109        die "$(eval_gettext "No submodule mapping found in .gitmodules for path '\$sm_path'")"
 110        echo "$name"
 111}
 112
 113#
 114# Clone a submodule
 115#
 116# Prior to calling, cmd_update checks that a possibly existing
 117# path is not a git repository.
 118# Likewise, cmd_add checks that path does not exist at all,
 119# since it is the location of a new submodule.
 120#
 121module_clone()
 122{
 123        sm_path=$1
 124        url=$2
 125        reference="$3"
 126        quiet=
 127        if test -n "$GIT_QUIET"
 128        then
 129                quiet=-q
 130        fi
 131
 132        gitdir=
 133        gitdir_base=
 134        name=$(module_name "$sm_path" 2>/dev/null)
 135        test -n "$name" || name="$sm_path"
 136        base_name=$(dirname "$name")
 137
 138        gitdir=$(git rev-parse --git-dir)
 139        gitdir_base="$gitdir/modules/$base_name"
 140        gitdir="$gitdir/modules/$name"
 141
 142        if test -d "$gitdir"
 143        then
 144                mkdir -p "$sm_path"
 145                rm -f "$gitdir/index"
 146        else
 147                mkdir -p "$gitdir_base"
 148                git clone $quiet -n ${reference:+"$reference"} \
 149                        --separate-git-dir "$gitdir" "$url" "$sm_path" ||
 150                die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
 151        fi
 152
 153        a=$(cd "$gitdir" && pwd)/
 154        b=$(cd "$sm_path" && pwd)/
 155        # normalize Windows-style absolute paths to POSIX-style absolute paths
 156        case $a in [a-zA-Z]:/*) a=/${a%%:*}${a#*:} ;; esac
 157        case $b in [a-zA-Z]:/*) b=/${b%%:*}${b#*:} ;; esac
 158        # Remove all common leading directories after a sanity check
 159        if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
 160                die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
 161        fi
 162        while test "${a%%/*}" = "${b%%/*}"
 163        do
 164                a=${a#*/}
 165                b=${b#*/}
 166        done
 167        # Now chop off the trailing '/'s that were added in the beginning
 168        a=${a%/}
 169        b=${b%/}
 170
 171        # Turn each leading "*/" component into "../"
 172        rel=$(echo $b | sed -e 's|[^/][^/]*|..|g')
 173        echo "gitdir: $rel/$a" >"$sm_path/.git"
 174
 175        rel=$(echo $a | sed -e 's|[^/][^/]*|..|g')
 176        (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 177}
 178
 179#
 180# Add a new submodule to the working tree, .gitmodules and the index
 181#
 182# $@ = repo path
 183#
 184# optional branch is stored in global branch variable
 185#
 186cmd_add()
 187{
 188        # parse $args after "submodule ... add".
 189        while test $# -ne 0
 190        do
 191                case "$1" in
 192                -b | --branch)
 193                        case "$2" in '') usage ;; esac
 194                        branch=$2
 195                        shift
 196                        ;;
 197                -f | --force)
 198                        force=$1
 199                        ;;
 200                -q|--quiet)
 201                        GIT_QUIET=1
 202                        ;;
 203                --reference)
 204                        case "$2" in '') usage ;; esac
 205                        reference="--reference=$2"
 206                        shift
 207                        ;;
 208                --reference=*)
 209                        reference="$1"
 210                        shift
 211                        ;;
 212                --)
 213                        shift
 214                        break
 215                        ;;
 216                -*)
 217                        usage
 218                        ;;
 219                *)
 220                        break
 221                        ;;
 222                esac
 223                shift
 224        done
 225
 226        repo=$1
 227        sm_path=$2
 228
 229        if test -z "$sm_path"; then
 230                sm_path=$(echo "$repo" |
 231                        sed -e 's|/$||' -e 's|:*/*\.git$||' -e 's|.*[/:]||g')
 232        fi
 233
 234        if test -z "$repo" -o -z "$sm_path"; then
 235                usage
 236        fi
 237
 238        # assure repo is absolute or relative to parent
 239        case "$repo" in
 240        ./*|../*)
 241                # dereference source url relative to parent's url
 242                realrepo=$(resolve_relative_url "$repo") || exit
 243                ;;
 244        *:*|/*)
 245                # absolute url
 246                realrepo=$repo
 247                ;;
 248        *)
 249                die "$(eval_gettext "repo URL: '\$repo' must be absolute or begin with ./|../")"
 250        ;;
 251        esac
 252
 253        # normalize path:
 254        # multiple //; leading ./; /./; /../; trailing /
 255        sm_path=$(printf '%s/\n' "$sm_path" |
 256                sed -e '
 257                        s|//*|/|g
 258                        s|^\(\./\)*||
 259                        s|/\./|/|g
 260                        :start
 261                        s|\([^/]*\)/\.\./||
 262                        tstart
 263                        s|/*$||
 264                ')
 265        git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
 266        die "$(eval_gettext "'\$sm_path' already exists in the index")"
 267
 268        if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
 269        then
 270                eval_gettextln "The following path is ignored by one of your .gitignore files:
 271\$sm_path
 272Use -f if you really want to add it." >&2
 273                exit 1
 274        fi
 275
 276        # perhaps the path exists and is already a git repo, else clone it
 277        if test -e "$sm_path"
 278        then
 279                if test -d "$sm_path"/.git -o -f "$sm_path"/.git
 280                then
 281                        eval_gettextln "Adding existing repo at '\$sm_path' to the index"
 282                else
 283                        die "$(eval_gettext "'\$sm_path' already exists and is not a valid git repo")"
 284                fi
 285
 286        else
 287
 288                module_clone "$sm_path" "$realrepo" "$reference" || exit
 289                (
 290                        clear_local_git_env
 291                        cd "$sm_path" &&
 292                        # ash fails to wordsplit ${branch:+-b "$branch"...}
 293                        case "$branch" in
 294                        '') git checkout -f -q ;;
 295                        ?*) git checkout -f -q -B "$branch" "origin/$branch" ;;
 296                        esac
 297                ) || die "$(eval_gettext "Unable to checkout submodule '\$sm_path'")"
 298        fi
 299        git config submodule."$sm_path".url "$realrepo"
 300
 301        git add $force "$sm_path" ||
 302        die "$(eval_gettext "Failed to add submodule '\$sm_path'")"
 303
 304        git config -f .gitmodules submodule."$sm_path".path "$sm_path" &&
 305        git config -f .gitmodules submodule."$sm_path".url "$repo" &&
 306        git add --force .gitmodules ||
 307        die "$(eval_gettext "Failed to register submodule '\$sm_path'")"
 308}
 309
 310#
 311# Execute an arbitrary command sequence in each checked out
 312# submodule
 313#
 314# $@ = command to execute
 315#
 316cmd_foreach()
 317{
 318        # parse $args after "submodule ... foreach".
 319        while test $# -ne 0
 320        do
 321                case "$1" in
 322                -q|--quiet)
 323                        GIT_QUIET=1
 324                        ;;
 325                --recursive)
 326                        recursive=1
 327                        ;;
 328                -*)
 329                        usage
 330                        ;;
 331                *)
 332                        break
 333                        ;;
 334                esac
 335                shift
 336        done
 337
 338        toplevel=$(pwd)
 339
 340        # dup stdin so that it can be restored when running the external
 341        # command in the subshell (and a recursive call to this function)
 342        exec 3<&0
 343
 344        module_list |
 345        while read mode sha1 stage sm_path
 346        do
 347                if test -e "$sm_path"/.git
 348                then
 349                        say "$(eval_gettext "Entering '\$prefix\$sm_path'")"
 350                        name=$(module_name "$sm_path")
 351                        (
 352                                prefix="$prefix$sm_path/"
 353                                clear_local_git_env
 354                                # we make $path available to scripts ...
 355                                path=$sm_path
 356                                cd "$sm_path" &&
 357                                eval "$@" &&
 358                                if test -n "$recursive"
 359                                then
 360                                        cmd_foreach "--recursive" "$@"
 361                                fi
 362                        ) <&3 3<&- ||
 363                        die "$(eval_gettext "Stopping at '\$sm_path'; script returned non-zero status.")"
 364                fi
 365        done
 366}
 367
 368#
 369# Register submodules in .git/config
 370#
 371# $@ = requested paths (default to all)
 372#
 373cmd_init()
 374{
 375        # parse $args after "submodule ... init".
 376        while test $# -ne 0
 377        do
 378                case "$1" in
 379                -q|--quiet)
 380                        GIT_QUIET=1
 381                        ;;
 382                --)
 383                        shift
 384                        break
 385                        ;;
 386                -*)
 387                        usage
 388                        ;;
 389                *)
 390                        break
 391                        ;;
 392                esac
 393                shift
 394        done
 395
 396        module_list "$@" |
 397        while read mode sha1 stage sm_path
 398        do
 399                name=$(module_name "$sm_path") || exit
 400
 401                # Copy url setting when it is not set yet
 402                if test -z "$(git config "submodule.$name.url")"
 403                then
 404                        url=$(git config -f .gitmodules submodule."$name".url)
 405                        test -z "$url" &&
 406                        die "$(eval_gettext "No url found for submodule path '\$sm_path' in .gitmodules")"
 407
 408                        # Possibly a url relative to parent
 409                        case "$url" in
 410                        ./*|../*)
 411                                url=$(resolve_relative_url "$url") || exit
 412                                ;;
 413                        esac
 414                        git config submodule."$name".url "$url" ||
 415                        die "$(eval_gettext "Failed to register url for submodule path '\$sm_path'")"
 416
 417                        say "$(eval_gettext "Submodule '\$name' (\$url) registered for path '\$sm_path'")"
 418                fi
 419
 420                # Copy "update" setting when it is not set yet
 421                upd="$(git config -f .gitmodules submodule."$name".update)"
 422                test -z "$upd" ||
 423                test -n "$(git config submodule."$name".update)" ||
 424                git config submodule."$name".update "$upd" ||
 425                die "$(eval_gettext "Failed to register update mode for submodule path '\$sm_path'")"
 426        done
 427}
 428
 429#
 430# Update each submodule path to correct revision, using clone and checkout as needed
 431#
 432# $@ = requested paths (default to all)
 433#
 434cmd_update()
 435{
 436        # parse $args after "submodule ... update".
 437        orig_flags=
 438        while test $# -ne 0
 439        do
 440                case "$1" in
 441                -q|--quiet)
 442                        GIT_QUIET=1
 443                        ;;
 444                -i|--init)
 445                        init=1
 446                        ;;
 447                -N|--no-fetch)
 448                        nofetch=1
 449                        ;;
 450                -f|--force)
 451                        force=$1
 452                        ;;
 453                -r|--rebase)
 454                        update="rebase"
 455                        ;;
 456                --reference)
 457                        case "$2" in '') usage ;; esac
 458                        reference="--reference=$2"
 459                        orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 460                        shift
 461                        ;;
 462                --reference=*)
 463                        reference="$1"
 464                        ;;
 465                -m|--merge)
 466                        update="merge"
 467                        ;;
 468                --recursive)
 469                        recursive=1
 470                        ;;
 471                --checkout)
 472                        update="checkout"
 473                        ;;
 474                --)
 475                        shift
 476                        break
 477                        ;;
 478                -*)
 479                        usage
 480                        ;;
 481                *)
 482                        break
 483                        ;;
 484                esac
 485                orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 486                shift
 487        done
 488
 489        if test -n "$init"
 490        then
 491                cmd_init "--" "$@" || return
 492        fi
 493
 494        cloned_modules=
 495        module_list "$@" | {
 496        err=
 497        while read mode sha1 stage sm_path
 498        do
 499                if test "$stage" = U
 500                then
 501                        echo >&2 "Skipping unmerged submodule $sm_path"
 502                        continue
 503                fi
 504                name=$(module_name "$sm_path") || exit
 505                url=$(git config submodule."$name".url)
 506                if ! test -z "$update"
 507                then
 508                        update_module=$update
 509                else
 510                        update_module=$(git config submodule."$name".update)
 511                fi
 512
 513                if test "$update_module" = "none"
 514                then
 515                        echo "Skipping submodule '$sm_path'"
 516                        continue
 517                fi
 518
 519                if test -z "$url"
 520                then
 521                        # Only mention uninitialized submodules when its
 522                        # path have been specified
 523                        test "$#" != "0" &&
 524                        say "$(eval_gettext "Submodule path '\$sm_path' not initialized
 525Maybe you want to use 'update --init'?")"
 526                        continue
 527                fi
 528
 529                if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 530                then
 531                        module_clone "$sm_path" "$url" "$reference"|| exit
 532                        cloned_modules="$cloned_modules;$name"
 533                        subsha1=
 534                else
 535                        subsha1=$(clear_local_git_env; cd "$sm_path" &&
 536                                git rev-parse --verify HEAD) ||
 537                        die "$(eval_gettext "Unable to find current revision in submodule path '\$sm_path'")"
 538                fi
 539
 540                if test "$subsha1" != "$sha1"
 541                then
 542                        subforce=$force
 543                        # If we don't already have a -f flag and the submodule has never been checked out
 544                        if test -z "$subsha1" -a -z "$force"
 545                        then
 546                                subforce="-f"
 547                        fi
 548
 549                        if test -z "$nofetch"
 550                        then
 551                                # Run fetch only if $sha1 isn't present or it
 552                                # is not reachable from a ref.
 553                                (clear_local_git_env; cd "$sm_path" &&
 554                                        ( (rev=$(git rev-list -n 1 $sha1 --not --all 2>/dev/null) &&
 555                                         test -z "$rev") || git-fetch)) ||
 556                                die "$(eval_gettext "Unable to fetch in submodule path '\$sm_path'")"
 557                        fi
 558
 559                        # Is this something we just cloned?
 560                        case ";$cloned_modules;" in
 561                        *";$name;"*)
 562                                # then there is no local change to integrate
 563                                update_module= ;;
 564                        esac
 565
 566                        must_die_on_failure=
 567                        case "$update_module" in
 568                        rebase)
 569                                command="git rebase"
 570                                die_msg="$(eval_gettext "Unable to rebase '\$sha1' in submodule path '\$sm_path'")"
 571                                say_msg="$(eval_gettext "Submodule path '\$sm_path': rebased into '\$sha1'")"
 572                                must_die_on_failure=yes
 573                                ;;
 574                        merge)
 575                                command="git merge"
 576                                die_msg="$(eval_gettext "Unable to merge '\$sha1' in submodule path '\$sm_path'")"
 577                                say_msg="$(eval_gettext "Submodule path '\$sm_path': merged in '\$sha1'")"
 578                                must_die_on_failure=yes
 579                                ;;
 580                        *)
 581                                command="git checkout $subforce -q"
 582                                die_msg="$(eval_gettext "Unable to checkout '\$sha1' in submodule path '\$sm_path'")"
 583                                say_msg="$(eval_gettext "Submodule path '\$sm_path': checked out '\$sha1'")"
 584                                ;;
 585                        esac
 586
 587                        if (clear_local_git_env; cd "$sm_path" && $command "$sha1")
 588                        then
 589                                say "$say_msg"
 590                        elif test -n "$must_die_on_failure"
 591                        then
 592                                die_with_status 2 "$die_msg"
 593                        else
 594                                err="${err};$die_msg"
 595                                continue
 596                        fi
 597                fi
 598
 599                if test -n "$recursive"
 600                then
 601                        (clear_local_git_env; cd "$sm_path" && eval cmd_update "$orig_flags")
 602                        res=$?
 603                        if test $res -gt 0
 604                        then
 605                                die_msg="$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 606                                if test $res -eq 1
 607                                then
 608                                        err="${err};$die_msg"
 609                                        continue
 610                                else
 611                                        die_with_status $res "$die_msg"
 612                                fi
 613                        fi
 614                fi
 615        done
 616
 617        if test -n "$err"
 618        then
 619                OIFS=$IFS
 620                IFS=';'
 621                for e in $err
 622                do
 623                        if test -n "$e"
 624                        then
 625                                echo >&2 "$e"
 626                        fi
 627                done
 628                IFS=$OIFS
 629                exit 1
 630        fi
 631        }
 632}
 633
 634set_name_rev () {
 635        revname=$( (
 636                clear_local_git_env
 637                cd "$1" && {
 638                        git describe "$2" 2>/dev/null ||
 639                        git describe --tags "$2" 2>/dev/null ||
 640                        git describe --contains "$2" 2>/dev/null ||
 641                        git describe --all --always "$2"
 642                }
 643        ) )
 644        test -z "$revname" || revname=" ($revname)"
 645}
 646#
 647# Show commit summary for submodules in index or working tree
 648#
 649# If '--cached' is given, show summary between index and given commit,
 650# or between working tree and given commit
 651#
 652# $@ = [commit (default 'HEAD'),] requested paths (default all)
 653#
 654cmd_summary() {
 655        summary_limit=-1
 656        for_status=
 657        diff_cmd=diff-index
 658
 659        # parse $args after "submodule ... summary".
 660        while test $# -ne 0
 661        do
 662                case "$1" in
 663                --cached)
 664                        cached="$1"
 665                        ;;
 666                --files)
 667                        files="$1"
 668                        ;;
 669                --for-status)
 670                        for_status="$1"
 671                        ;;
 672                -n|--summary-limit)
 673                        if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
 674                        then
 675                                :
 676                        else
 677                                usage
 678                        fi
 679                        shift
 680                        ;;
 681                --)
 682                        shift
 683                        break
 684                        ;;
 685                -*)
 686                        usage
 687                        ;;
 688                *)
 689                        break
 690                        ;;
 691                esac
 692                shift
 693        done
 694
 695        test $summary_limit = 0 && return
 696
 697        if rev=$(git rev-parse -q --verify --default HEAD ${1+"$1"})
 698        then
 699                head=$rev
 700                test $# = 0 || shift
 701        elif test -z "$1" -o "$1" = "HEAD"
 702        then
 703                # before the first commit: compare with an empty tree
 704                head=$(git hash-object -w -t tree --stdin </dev/null)
 705                test -z "$1" || shift
 706        else
 707                head="HEAD"
 708        fi
 709
 710        if [ -n "$files" ]
 711        then
 712                test -n "$cached" &&
 713                die "$(gettext -- "--cached cannot be used with --files")"
 714                diff_cmd=diff-files
 715                head=
 716        fi
 717
 718        cd_to_toplevel
 719        # Get modified modules cared by user
 720        modules=$(git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- "$@" |
 721                sane_egrep '^:([0-7]* )?160000' |
 722                while read mod_src mod_dst sha1_src sha1_dst status name
 723                do
 724                        # Always show modules deleted or type-changed (blob<->module)
 725                        test $status = D -o $status = T && echo "$name" && continue
 726                        # Also show added or modified modules which are checked out
 727                        GIT_DIR="$name/.git" git-rev-parse --git-dir >/dev/null 2>&1 &&
 728                        echo "$name"
 729                done
 730        )
 731
 732        test -z "$modules" && return
 733
 734        git $diff_cmd $cached --ignore-submodules=dirty --raw $head -- $modules |
 735        sane_egrep '^:([0-7]* )?160000' |
 736        cut -c2- |
 737        while read mod_src mod_dst sha1_src sha1_dst status name
 738        do
 739                if test -z "$cached" &&
 740                        test $sha1_dst = 0000000000000000000000000000000000000000
 741                then
 742                        case "$mod_dst" in
 743                        160000)
 744                                sha1_dst=$(GIT_DIR="$name/.git" git rev-parse HEAD)
 745                                ;;
 746                        100644 | 100755 | 120000)
 747                                sha1_dst=$(git hash-object $name)
 748                                ;;
 749                        000000)
 750                                ;; # removed
 751                        *)
 752                                # unexpected type
 753                                eval_gettextln "unexpected mode \$mod_dst" >&2
 754                                continue ;;
 755                        esac
 756                fi
 757                missing_src=
 758                missing_dst=
 759
 760                test $mod_src = 160000 &&
 761                ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_src^0 >/dev/null &&
 762                missing_src=t
 763
 764                test $mod_dst = 160000 &&
 765                ! GIT_DIR="$name/.git" git-rev-parse -q --verify $sha1_dst^0 >/dev/null &&
 766                missing_dst=t
 767
 768                total_commits=
 769                case "$missing_src,$missing_dst" in
 770                t,)
 771                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_src")"
 772                        ;;
 773                ,t)
 774                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commit \$sha1_dst")"
 775                        ;;
 776                t,t)
 777                        errmsg="$(eval_gettext "  Warn: \$name doesn't contain commits \$sha1_src and \$sha1_dst")"
 778                        ;;
 779                *)
 780                        errmsg=
 781                        total_commits=$(
 782                        if test $mod_src = 160000 -a $mod_dst = 160000
 783                        then
 784                                range="$sha1_src...$sha1_dst"
 785                        elif test $mod_src = 160000
 786                        then
 787                                range=$sha1_src
 788                        else
 789                                range=$sha1_dst
 790                        fi
 791                        GIT_DIR="$name/.git" \
 792                        git rev-list --first-parent $range -- | wc -l
 793                        )
 794                        total_commits=" ($(($total_commits + 0)))"
 795                        ;;
 796                esac
 797
 798                sha1_abbr_src=$(echo $sha1_src | cut -c1-7)
 799                sha1_abbr_dst=$(echo $sha1_dst | cut -c1-7)
 800                if test $status = T
 801                then
 802                        blob="$(gettext "blob")"
 803                        submodule="$(gettext "submodule")"
 804                        if test $mod_dst = 160000
 805                        then
 806                                echo "* $name $sha1_abbr_src($blob)->$sha1_abbr_dst($submodule)$total_commits:"
 807                        else
 808                                echo "* $name $sha1_abbr_src($submodule)->$sha1_abbr_dst($blob)$total_commits:"
 809                        fi
 810                else
 811                        echo "* $name $sha1_abbr_src...$sha1_abbr_dst$total_commits:"
 812                fi
 813                if test -n "$errmsg"
 814                then
 815                        # Don't give error msg for modification whose dst is not submodule
 816                        # i.e. deleted or changed to blob
 817                        test $mod_dst = 160000 && echo "$errmsg"
 818                else
 819                        if test $mod_src = 160000 -a $mod_dst = 160000
 820                        then
 821                                limit=
 822                                test $summary_limit -gt 0 && limit="-$summary_limit"
 823                                GIT_DIR="$name/.git" \
 824                                git log $limit --pretty='format:  %m %s' \
 825                                --first-parent $sha1_src...$sha1_dst
 826                        elif test $mod_dst = 160000
 827                        then
 828                                GIT_DIR="$name/.git" \
 829                                git log --pretty='format:  > %s' -1 $sha1_dst
 830                        else
 831                                GIT_DIR="$name/.git" \
 832                                git log --pretty='format:  < %s' -1 $sha1_src
 833                        fi
 834                        echo
 835                fi
 836                echo
 837        done |
 838        if test -n "$for_status"; then
 839                if [ -n "$files" ]; then
 840                        gettextln "# Submodules changed but not updated:"
 841                else
 842                        gettextln "# Submodule changes to be committed:"
 843                fi
 844                echo "#"
 845                sed -e 's|^|# |' -e 's|^# $|#|'
 846        else
 847                cat
 848        fi
 849}
 850#
 851# List all submodules, prefixed with:
 852#  - submodule not initialized
 853#  + different revision checked out
 854#
 855# If --cached was specified the revision in the index will be printed
 856# instead of the currently checked out revision.
 857#
 858# $@ = requested paths (default to all)
 859#
 860cmd_status()
 861{
 862        # parse $args after "submodule ... status".
 863        orig_flags=
 864        while test $# -ne 0
 865        do
 866                case "$1" in
 867                -q|--quiet)
 868                        GIT_QUIET=1
 869                        ;;
 870                --cached)
 871                        cached=1
 872                        ;;
 873                --recursive)
 874                        recursive=1
 875                        ;;
 876                --)
 877                        shift
 878                        break
 879                        ;;
 880                -*)
 881                        usage
 882                        ;;
 883                *)
 884                        break
 885                        ;;
 886                esac
 887                orig_flags="$orig_flags $(git rev-parse --sq-quote "$1")"
 888                shift
 889        done
 890
 891        module_list "$@" |
 892        while read mode sha1 stage sm_path
 893        do
 894                name=$(module_name "$sm_path") || exit
 895                url=$(git config submodule."$name".url)
 896                displaypath="$prefix$sm_path"
 897                if test "$stage" = U
 898                then
 899                        say "U$sha1 $displaypath"
 900                        continue
 901                fi
 902                if test -z "$url" || ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
 903                then
 904                        say "-$sha1 $displaypath"
 905                        continue;
 906                fi
 907                set_name_rev "$sm_path" "$sha1"
 908                if git diff-files --ignore-submodules=dirty --quiet -- "$sm_path"
 909                then
 910                        say " $sha1 $displaypath$revname"
 911                else
 912                        if test -z "$cached"
 913                        then
 914                                sha1=$(clear_local_git_env; cd "$sm_path" && git rev-parse --verify HEAD)
 915                                set_name_rev "$sm_path" "$sha1"
 916                        fi
 917                        say "+$sha1 $displaypath$revname"
 918                fi
 919
 920                if test -n "$recursive"
 921                then
 922                        (
 923                                prefix="$displaypath/"
 924                                clear_local_git_env
 925                                cd "$sm_path" &&
 926                                eval cmd_status "$orig_args"
 927                        ) ||
 928                        die "$(eval_gettext "Failed to recurse into submodule path '\$sm_path'")"
 929                fi
 930        done
 931}
 932#
 933# Sync remote urls for submodules
 934# This makes the value for remote.$remote.url match the value
 935# specified in .gitmodules.
 936#
 937cmd_sync()
 938{
 939        while test $# -ne 0
 940        do
 941                case "$1" in
 942                -q|--quiet)
 943                        GIT_QUIET=1
 944                        shift
 945                        ;;
 946                --)
 947                        shift
 948                        break
 949                        ;;
 950                -*)
 951                        usage
 952                        ;;
 953                *)
 954                        break
 955                        ;;
 956                esac
 957        done
 958        cd_to_toplevel
 959        module_list "$@" |
 960        while read mode sha1 stage sm_path
 961        do
 962                name=$(module_name "$sm_path")
 963                url=$(git config -f .gitmodules --get submodule."$name".url)
 964
 965                # Possibly a url relative to parent
 966                case "$url" in
 967                ./*|../*)
 968                        url=$(resolve_relative_url "$url") || exit
 969                        ;;
 970                esac
 971
 972                if git config "submodule.$name.url" >/dev/null 2>/dev/null
 973                then
 974                        say "$(eval_gettext "Synchronizing submodule url for '\$name'")"
 975                        git config submodule."$name".url "$url"
 976
 977                        if test -e "$sm_path"/.git
 978                        then
 979                        (
 980                                clear_local_git_env
 981                                cd "$sm_path"
 982                                remote=$(get_default_remote)
 983                                git config remote."$remote".url "$url"
 984                        )
 985                        fi
 986                fi
 987        done
 988}
 989
 990# This loop parses the command line arguments to find the
 991# subcommand name to dispatch.  Parsing of the subcommand specific
 992# options are primarily done by the subcommand implementations.
 993# Subcommand specific options such as --branch and --cached are
 994# parsed here as well, for backward compatibility.
 995
 996while test $# != 0 && test -z "$command"
 997do
 998        case "$1" in
 999        add | foreach | init | update | status | summary | sync)
1000                command=$1
1001                ;;
1002        -q|--quiet)
1003                GIT_QUIET=1
1004                ;;
1005        -b|--branch)
1006                case "$2" in
1007                '')
1008                        usage
1009                        ;;
1010                esac
1011                branch="$2"; shift
1012                ;;
1013        --cached)
1014                cached="$1"
1015                ;;
1016        --)
1017                break
1018                ;;
1019        -*)
1020                usage
1021                ;;
1022        *)
1023                break
1024                ;;
1025        esac
1026        shift
1027done
1028
1029# No command word defaults to "status"
1030test -n "$command" || command=status
1031
1032# "-b branch" is accepted only by "add"
1033if test -n "$branch" && test "$command" != add
1034then
1035        usage
1036fi
1037
1038# "--cached" is accepted only by "status" and "summary"
1039if test -n "$cached" && test "$command" != status -a "$command" != summary
1040then
1041        usage
1042fi
1043
1044"cmd_$command" "$@"