git-stash.shon commit Merge branch 'rd/doc-hook-used-in-sample' (1c6036b)
   1#!/bin/sh
   2# Copyright (c) 2007, Nanako Shiraishi
   3
   4dashless=$(basename "$0" | sed -e 's/-/ /')
   5USAGE="list [<options>]
   6   or: $dashless show [<stash>]
   7   or: $dashless drop [-q|--quiet] [<stash>]
   8   or: $dashless ( pop | apply ) [--index] [-q|--quiet] [<stash>]
   9   or: $dashless branch <branchname> [<stash>]
  10   or: $dashless save [--patch] [-k|--[no-]keep-index] [-q|--quiet]
  11                      [-u|--include-untracked] [-a|--all] [<message>]
  12   or: $dashless [push [--patch] [-k|--[no-]keep-index] [-q|--quiet]
  13                       [-u|--include-untracked] [-a|--all] [-m <message>]
  14                       [-- <pathspec>...]]
  15   or: $dashless clear"
  16
  17SUBDIRECTORY_OK=Yes
  18OPTIONS_SPEC=
  19START_DIR=$(pwd)
  20. git-sh-setup
  21require_work_tree
  22prefix=$(git rev-parse --show-prefix) || exit 1
  23cd_to_toplevel
  24
  25TMP="$GIT_DIR/.git-stash.$$"
  26TMPindex=${GIT_INDEX_FILE-"$(git rev-parse --git-path index)"}.stash.$$
  27trap 'rm -f "$TMP-"* "$TMPindex"' 0
  28
  29ref_stash=refs/stash
  30
  31if git config --get-colorbool color.interactive; then
  32       help_color="$(git config --get-color color.interactive.help 'red bold')"
  33       reset_color="$(git config --get-color '' reset)"
  34else
  35       help_color=
  36       reset_color=
  37fi
  38
  39no_changes () {
  40        git diff-index --quiet --cached HEAD --ignore-submodules -- "$@" &&
  41        git diff-files --quiet --ignore-submodules -- "$@" &&
  42        (test -z "$untracked" || test -z "$(untracked_files "$@")")
  43}
  44
  45untracked_files () {
  46        if test "$1" = "-z"
  47        then
  48                shift
  49                z=-z
  50        else
  51                z=
  52        fi
  53        excl_opt=--exclude-standard
  54        test "$untracked" = "all" && excl_opt=
  55        git ls-files -o $z $excl_opt -- "$@"
  56}
  57
  58prepare_fallback_ident () {
  59        if ! git -c user.useconfigonly=yes var GIT_COMMITTER_IDENT >/dev/null 2>&1
  60        then
  61                GIT_AUTHOR_NAME="git stash"
  62                GIT_AUTHOR_EMAIL=git@stash
  63                GIT_COMMITTER_NAME="git stash"
  64                GIT_COMMITTER_EMAIL=git@stash
  65                export GIT_AUTHOR_NAME
  66                export GIT_AUTHOR_EMAIL
  67                export GIT_COMMITTER_NAME
  68                export GIT_COMMITTER_EMAIL
  69        fi
  70}
  71
  72clear_stash () {
  73        if test $# != 0
  74        then
  75                die "$(gettext "git stash clear with parameters is unimplemented")"
  76        fi
  77        if current=$(git rev-parse --verify --quiet $ref_stash)
  78        then
  79                git update-ref -d $ref_stash $current
  80        fi
  81}
  82
  83create_stash () {
  84
  85        prepare_fallback_ident
  86
  87        stash_msg=
  88        untracked=
  89        while test $# != 0
  90        do
  91                case "$1" in
  92                -m|--message)
  93                        shift
  94                        stash_msg=${1?"BUG: create_stash () -m requires an argument"}
  95                        ;;
  96                -m*)
  97                        stash_msg=${1#-m}
  98                        ;;
  99                --message=*)
 100                        stash_msg=${1#--message=}
 101                        ;;
 102                -u|--include-untracked)
 103                        shift
 104                        untracked=${1?"BUG: create_stash () -u requires an argument"}
 105                        ;;
 106                --)
 107                        shift
 108                        break
 109                        ;;
 110                esac
 111                shift
 112        done
 113
 114        git update-index -q --refresh
 115        if no_changes "$@"
 116        then
 117                exit 0
 118        fi
 119
 120        # state of the base commit
 121        if b_commit=$(git rev-parse --verify HEAD)
 122        then
 123                head=$(git rev-list --oneline -n 1 HEAD --)
 124        else
 125                die "$(gettext "You do not have the initial commit yet")"
 126        fi
 127
 128        if branch=$(git symbolic-ref -q HEAD)
 129        then
 130                branch=${branch#refs/heads/}
 131        else
 132                branch='(no branch)'
 133        fi
 134        msg=$(printf '%s: %s' "$branch" "$head")
 135
 136        # state of the index
 137        i_tree=$(git write-tree) &&
 138        i_commit=$(printf 'index on %s\n' "$msg" |
 139                git commit-tree $i_tree -p $b_commit) ||
 140                die "$(gettext "Cannot save the current index state")"
 141
 142        if test -n "$untracked"
 143        then
 144                # Untracked files are stored by themselves in a parentless commit, for
 145                # ease of unpacking later.
 146                u_commit=$(
 147                        untracked_files -z "$@" | (
 148                                GIT_INDEX_FILE="$TMPindex" &&
 149                                export GIT_INDEX_FILE &&
 150                                rm -f "$TMPindex" &&
 151                                git update-index -z --add --remove --stdin &&
 152                                u_tree=$(git write-tree) &&
 153                                printf 'untracked files on %s\n' "$msg" | git commit-tree $u_tree  &&
 154                                rm -f "$TMPindex"
 155                ) ) || die "$(gettext "Cannot save the untracked files")"
 156
 157                untracked_commit_option="-p $u_commit";
 158        else
 159                untracked_commit_option=
 160        fi
 161
 162        if test -z "$patch_mode"
 163        then
 164
 165                # state of the working tree
 166                w_tree=$( (
 167                        git read-tree --index-output="$TMPindex" -m $i_tree &&
 168                        GIT_INDEX_FILE="$TMPindex" &&
 169                        export GIT_INDEX_FILE &&
 170                        git diff-index --name-only -z HEAD -- "$@" >"$TMP-stagenames" &&
 171                        git update-index -z --add --remove --stdin <"$TMP-stagenames" &&
 172                        git write-tree &&
 173                        rm -f "$TMPindex"
 174                ) ) ||
 175                        die "$(gettext "Cannot save the current worktree state")"
 176
 177        else
 178
 179                rm -f "$TMP-index" &&
 180                GIT_INDEX_FILE="$TMP-index" git read-tree HEAD &&
 181
 182                # find out what the user wants
 183                GIT_INDEX_FILE="$TMP-index" \
 184                        git add--interactive --patch=stash -- "$@" &&
 185
 186                # state of the working tree
 187                w_tree=$(GIT_INDEX_FILE="$TMP-index" git write-tree) ||
 188                die "$(gettext "Cannot save the current worktree state")"
 189
 190                git diff-tree -p HEAD $w_tree -- >"$TMP-patch" &&
 191                test -s "$TMP-patch" ||
 192                die "$(gettext "No changes selected")"
 193
 194                rm -f "$TMP-index" ||
 195                die "$(gettext "Cannot remove temporary index (can't happen)")"
 196
 197        fi
 198
 199        # create the stash
 200        if test -z "$stash_msg"
 201        then
 202                stash_msg=$(printf 'WIP on %s' "$msg")
 203        else
 204                stash_msg=$(printf 'On %s: %s' "$branch" "$stash_msg")
 205        fi
 206        w_commit=$(printf '%s\n' "$stash_msg" |
 207        git commit-tree $w_tree -p $b_commit -p $i_commit $untracked_commit_option) ||
 208        die "$(gettext "Cannot record working tree state")"
 209}
 210
 211store_stash () {
 212        while test $# != 0
 213        do
 214                case "$1" in
 215                -m|--message)
 216                        shift
 217                        stash_msg="$1"
 218                        ;;
 219                -m*)
 220                        stash_msg=${1#-m}
 221                        ;;
 222                --message=*)
 223                        stash_msg=${1#--message=}
 224                        ;;
 225                -q|--quiet)
 226                        quiet=t
 227                        ;;
 228                *)
 229                        break
 230                        ;;
 231                esac
 232                shift
 233        done
 234        test $# = 1 ||
 235        die "$(eval_gettext "\"$dashless store\" requires one <commit> argument")"
 236
 237        w_commit="$1"
 238        if test -z "$stash_msg"
 239        then
 240                stash_msg="Created via \"git stash store\"."
 241        fi
 242
 243        git update-ref --create-reflog -m "$stash_msg" $ref_stash $w_commit
 244        ret=$?
 245        test $ret != 0 && test -z "$quiet" &&
 246        die "$(eval_gettext "Cannot update \$ref_stash with \$w_commit")"
 247        return $ret
 248}
 249
 250push_stash () {
 251        keep_index=
 252        patch_mode=
 253        untracked=
 254        stash_msg=
 255        while test $# != 0
 256        do
 257                case "$1" in
 258                -k|--keep-index)
 259                        keep_index=t
 260                        ;;
 261                --no-keep-index)
 262                        keep_index=n
 263                        ;;
 264                -p|--patch)
 265                        patch_mode=t
 266                        # only default to keep if we don't already have an override
 267                        test -z "$keep_index" && keep_index=t
 268                        ;;
 269                -q|--quiet)
 270                        GIT_QUIET=t
 271                        ;;
 272                -u|--include-untracked)
 273                        untracked=untracked
 274                        ;;
 275                -a|--all)
 276                        untracked=all
 277                        ;;
 278                -m|--message)
 279                        shift
 280                        test -z ${1+x} && usage
 281                        stash_msg=$1
 282                        ;;
 283                -m*)
 284                        stash_msg=${1#-m}
 285                        ;;
 286                --message=*)
 287                        stash_msg=${1#--message=}
 288                        ;;
 289                --help)
 290                        show_help
 291                        ;;
 292                --)
 293                        shift
 294                        break
 295                        ;;
 296                -*)
 297                        option="$1"
 298                        eval_gettextln "error: unknown option for 'stash push': \$option"
 299                        usage
 300                        ;;
 301                *)
 302                        break
 303                        ;;
 304                esac
 305                shift
 306        done
 307
 308        eval "set $(git rev-parse --sq --prefix "$prefix" -- "$@")"
 309
 310        if test -n "$patch_mode" && test -n "$untracked"
 311        then
 312                die "$(gettext "Can't use --patch and --include-untracked or --all at the same time")"
 313        fi
 314
 315        test -n "$untracked" || git ls-files --error-unmatch -- "$@" >/dev/null || exit 1
 316
 317        git update-index -q --refresh
 318        if no_changes "$@"
 319        then
 320                say "$(gettext "No local changes to save")"
 321                exit 0
 322        fi
 323
 324        git reflog exists $ref_stash ||
 325                clear_stash || die "$(gettext "Cannot initialize stash")"
 326
 327        create_stash -m "$stash_msg" -u "$untracked" -- "$@"
 328        store_stash -m "$stash_msg" -q $w_commit ||
 329        die "$(gettext "Cannot save the current status")"
 330        say "$(eval_gettext "Saved working directory and index state \$stash_msg")"
 331
 332        if test -z "$patch_mode"
 333        then
 334                test "$untracked" = "all" && CLEAN_X_OPTION=-x || CLEAN_X_OPTION=
 335                if test -n "$untracked" && test $# = 0
 336                then
 337                        git clean --force --quiet -d $CLEAN_X_OPTION
 338                fi
 339
 340                if test $# != 0
 341                then
 342                        test -z "$untracked" && UPDATE_OPTION="-u" || UPDATE_OPTION=
 343                        test "$untracked" = "all" && FORCE_OPTION="--force" || FORCE_OPTION=
 344                        git add $UPDATE_OPTION $FORCE_OPTION -- "$@"
 345                        git diff-index -p --cached --binary HEAD -- "$@" |
 346                        git apply --index -R
 347                else
 348                        git reset --hard -q
 349                fi
 350
 351                if test "$keep_index" = "t" && test -n "$i_tree"
 352                then
 353                        git read-tree --reset $i_tree
 354                        git ls-files -z --modified -- "$@" |
 355                        git checkout-index -z --force --stdin
 356                fi
 357        else
 358                git apply -R < "$TMP-patch" ||
 359                die "$(gettext "Cannot remove worktree changes")"
 360
 361                if test "$keep_index" != "t"
 362                then
 363                        git reset -q -- "$@"
 364                fi
 365        fi
 366}
 367
 368save_stash () {
 369        push_options=
 370        while test $# != 0
 371        do
 372                case "$1" in
 373                --)
 374                        shift
 375                        break
 376                        ;;
 377                -*)
 378                        # pass all options through to push_stash
 379                        push_options="$push_options $1"
 380                        ;;
 381                *)
 382                        break
 383                        ;;
 384                esac
 385                shift
 386        done
 387
 388        stash_msg="$*"
 389
 390        if test -z "$stash_msg"
 391        then
 392                push_stash $push_options
 393        else
 394                push_stash $push_options -m "$stash_msg"
 395        fi
 396}
 397
 398have_stash () {
 399        git rev-parse --verify --quiet $ref_stash >/dev/null
 400}
 401
 402list_stash () {
 403        have_stash || return 0
 404        git log --format="%gd: %gs" -g --first-parent -m "$@" $ref_stash --
 405}
 406
 407show_stash () {
 408        ALLOW_UNKNOWN_FLAGS=t
 409        assert_stash_like "$@"
 410
 411        if test -z "$FLAGS"
 412        then
 413                if test "$(git config --bool stash.showStat || echo true)" = "true"
 414                then
 415                        FLAGS=--stat
 416                fi
 417
 418                if test "$(git config --bool stash.showPatch || echo false)" = "true"
 419                then
 420                        FLAGS=${FLAGS}${FLAGS:+ }-p
 421                fi
 422
 423                if test -z "$FLAGS"
 424                then
 425                        return 0
 426                fi
 427        fi
 428
 429        git diff ${FLAGS} $b_commit $w_commit
 430}
 431
 432show_help () {
 433        exec git help stash
 434        exit 1
 435}
 436
 437#
 438# Parses the remaining options looking for flags and
 439# at most one revision defaulting to ${ref_stash}@{0}
 440# if none found.
 441#
 442# Derives related tree and commit objects from the
 443# revision, if one is found.
 444#
 445# stash records the work tree, and is a merge between the
 446# base commit (first parent) and the index tree (second parent).
 447#
 448#   REV is set to the symbolic version of the specified stash-like commit
 449#   IS_STASH_LIKE is non-blank if ${REV} looks like a stash
 450#   IS_STASH_REF is non-blank if the ${REV} looks like a stash ref
 451#   s is set to the SHA1 of the stash commit
 452#   w_commit is set to the commit containing the working tree
 453#   b_commit is set to the base commit
 454#   i_commit is set to the commit containing the index tree
 455#   u_commit is set to the commit containing the untracked files tree
 456#   w_tree is set to the working tree
 457#   b_tree is set to the base tree
 458#   i_tree is set to the index tree
 459#   u_tree is set to the untracked files tree
 460#
 461#   GIT_QUIET is set to t if -q is specified
 462#   INDEX_OPTION is set to --index if --index is specified.
 463#   FLAGS is set to the remaining flags (if allowed)
 464#
 465# dies if:
 466#   * too many revisions specified
 467#   * no revision is specified and there is no stash stack
 468#   * a revision is specified which cannot be resolve to a SHA1
 469#   * a non-existent stash reference is specified
 470#   * unknown flags were set and ALLOW_UNKNOWN_FLAGS is not "t"
 471#
 472
 473parse_flags_and_rev()
 474{
 475        test "$PARSE_CACHE" = "$*" && return 0 # optimisation
 476        PARSE_CACHE="$*"
 477
 478        IS_STASH_LIKE=
 479        IS_STASH_REF=
 480        INDEX_OPTION=
 481        s=
 482        w_commit=
 483        b_commit=
 484        i_commit=
 485        u_commit=
 486        w_tree=
 487        b_tree=
 488        i_tree=
 489        u_tree=
 490
 491        FLAGS=
 492        REV=
 493        for opt
 494        do
 495                case "$opt" in
 496                        -q|--quiet)
 497                                GIT_QUIET=-t
 498                        ;;
 499                        --index)
 500                                INDEX_OPTION=--index
 501                        ;;
 502                        --help)
 503                                show_help
 504                        ;;
 505                        -*)
 506                                test "$ALLOW_UNKNOWN_FLAGS" = t ||
 507                                        die "$(eval_gettext "unknown option: \$opt")"
 508                                FLAGS="${FLAGS}${FLAGS:+ }$opt"
 509                        ;;
 510                        *)
 511                                REV="${REV}${REV:+ }'$opt'"
 512                        ;;
 513                esac
 514        done
 515
 516        eval set -- $REV
 517
 518        case $# in
 519                0)
 520                        have_stash || die "$(gettext "No stash entries found.")"
 521                        set -- ${ref_stash}@{0}
 522                ;;
 523                1)
 524                        :
 525                ;;
 526                *)
 527                        die "$(eval_gettext "Too many revisions specified: \$REV")"
 528                ;;
 529        esac
 530
 531        case "$1" in
 532                *[!0-9]*)
 533                        :
 534                ;;
 535                *)
 536                        set -- "${ref_stash}@{$1}"
 537                ;;
 538        esac
 539
 540        REV=$(git rev-parse --symbolic --verify --quiet "$1") || {
 541                reference="$1"
 542                die "$(eval_gettext "\$reference is not a valid reference")"
 543        }
 544
 545        i_commit=$(git rev-parse --verify --quiet "$REV^2") &&
 546        set -- $(git rev-parse "$REV" "$REV^1" "$REV:" "$REV^1:" "$REV^2:" 2>/dev/null) &&
 547        s=$1 &&
 548        w_commit=$1 &&
 549        b_commit=$2 &&
 550        w_tree=$3 &&
 551        b_tree=$4 &&
 552        i_tree=$5 &&
 553        IS_STASH_LIKE=t &&
 554        test "$ref_stash" = "$(git rev-parse --symbolic-full-name "${REV%@*}")" &&
 555        IS_STASH_REF=t
 556
 557        u_commit=$(git rev-parse --verify --quiet "$REV^3") &&
 558        u_tree=$(git rev-parse "$REV^3:" 2>/dev/null)
 559}
 560
 561is_stash_like()
 562{
 563        parse_flags_and_rev "$@"
 564        test -n "$IS_STASH_LIKE"
 565}
 566
 567assert_stash_like() {
 568        is_stash_like "$@" || {
 569                args="$*"
 570                die "$(eval_gettext "'\$args' is not a stash-like commit")"
 571        }
 572}
 573
 574is_stash_ref() {
 575        is_stash_like "$@" && test -n "$IS_STASH_REF"
 576}
 577
 578assert_stash_ref() {
 579        is_stash_ref "$@" || {
 580                args="$*"
 581                die "$(eval_gettext "'\$args' is not a stash reference")"
 582        }
 583}
 584
 585apply_stash () {
 586
 587        assert_stash_like "$@"
 588
 589        git update-index -q --refresh || die "$(gettext "unable to refresh index")"
 590
 591        # current index state
 592        c_tree=$(git write-tree) ||
 593                die "$(gettext "Cannot apply a stash in the middle of a merge")"
 594
 595        unstashed_index_tree=
 596        if test -n "$INDEX_OPTION" && test "$b_tree" != "$i_tree" &&
 597                        test "$c_tree" != "$i_tree"
 598        then
 599                git diff-tree --binary $s^2^..$s^2 | git apply --cached
 600                test $? -ne 0 &&
 601                        die "$(gettext "Conflicts in index. Try without --index.")"
 602                unstashed_index_tree=$(git write-tree) ||
 603                        die "$(gettext "Could not save index tree")"
 604                git reset
 605        fi
 606
 607        if test -n "$u_tree"
 608        then
 609                GIT_INDEX_FILE="$TMPindex" git read-tree "$u_tree" &&
 610                GIT_INDEX_FILE="$TMPindex" git checkout-index --all &&
 611                rm -f "$TMPindex" ||
 612                die "$(gettext "Could not restore untracked files from stash entry")"
 613        fi
 614
 615        eval "
 616                GITHEAD_$w_tree='Stashed changes' &&
 617                GITHEAD_$c_tree='Updated upstream' &&
 618                GITHEAD_$b_tree='Version stash was based on' &&
 619                export GITHEAD_$w_tree GITHEAD_$c_tree GITHEAD_$b_tree
 620        "
 621
 622        if test -n "$GIT_QUIET"
 623        then
 624                GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
 625        fi
 626        if git merge-recursive $b_tree -- $c_tree $w_tree
 627        then
 628                # No conflict
 629                if test -n "$unstashed_index_tree"
 630                then
 631                        git read-tree "$unstashed_index_tree"
 632                else
 633                        a="$TMP-added" &&
 634                        git diff-index --cached --name-only --diff-filter=A $c_tree >"$a" &&
 635                        git read-tree --reset $c_tree &&
 636                        git update-index --add --stdin <"$a" ||
 637                                die "$(gettext "Cannot unstage modified files")"
 638                        rm -f "$a"
 639                fi
 640                squelch=
 641                if test -n "$GIT_QUIET"
 642                then
 643                        squelch='>/dev/null 2>&1'
 644                fi
 645                (cd "$START_DIR" && eval "git status $squelch") || :
 646        else
 647                # Merge conflict; keep the exit status from merge-recursive
 648                status=$?
 649                git rerere
 650                if test -n "$INDEX_OPTION"
 651                then
 652                        gettextln "Index was not unstashed." >&2
 653                fi
 654                exit $status
 655        fi
 656}
 657
 658pop_stash() {
 659        assert_stash_ref "$@"
 660
 661        if apply_stash "$@"
 662        then
 663                drop_stash "$@"
 664        else
 665                status=$?
 666                say "$(gettext "The stash entry is kept in case you need it again.")"
 667                exit $status
 668        fi
 669}
 670
 671drop_stash () {
 672        assert_stash_ref "$@"
 673
 674        git reflog delete --updateref --rewrite "${REV}" &&
 675                say "$(eval_gettext "Dropped \${REV} (\$s)")" ||
 676                die "$(eval_gettext "\${REV}: Could not drop stash entry")"
 677
 678        # clear_stash if we just dropped the last stash entry
 679        git rev-parse --verify --quiet "$ref_stash@{0}" >/dev/null ||
 680        clear_stash
 681}
 682
 683apply_to_branch () {
 684        test -n "$1" || die "$(gettext "No branch name specified")"
 685        branch=$1
 686        shift 1
 687
 688        set -- --index "$@"
 689        assert_stash_like "$@"
 690
 691        git checkout -b $branch $REV^ &&
 692        apply_stash "$@" && {
 693                test -z "$IS_STASH_REF" || drop_stash "$@"
 694        }
 695}
 696
 697test "$1" = "-p" && set "push" "$@"
 698
 699PARSE_CACHE='--not-parsed'
 700# The default command is "push" if nothing but options are given
 701seen_non_option=
 702for opt
 703do
 704        case "$opt" in
 705        --) break ;;
 706        -*) ;;
 707        *) seen_non_option=t; break ;;
 708        esac
 709done
 710
 711test -n "$seen_non_option" || set "push" "$@"
 712
 713# Main command set
 714case "$1" in
 715list)
 716        shift
 717        list_stash "$@"
 718        ;;
 719show)
 720        shift
 721        show_stash "$@"
 722        ;;
 723save)
 724        shift
 725        save_stash "$@"
 726        ;;
 727push)
 728        shift
 729        push_stash "$@"
 730        ;;
 731apply)
 732        shift
 733        apply_stash "$@"
 734        ;;
 735clear)
 736        shift
 737        clear_stash "$@"
 738        ;;
 739create)
 740        shift
 741        create_stash -m "$*" && echo "$w_commit"
 742        ;;
 743store)
 744        shift
 745        store_stash "$@"
 746        ;;
 747drop)
 748        shift
 749        drop_stash "$@"
 750        ;;
 751pop)
 752        shift
 753        pop_stash "$@"
 754        ;;
 755branch)
 756        shift
 757        apply_to_branch "$@"
 758        ;;
 759*)
 760        case $# in
 761        0)
 762                push_stash &&
 763                say "$(gettext "(To restore them type \"git stash apply\")")"
 764                ;;
 765        *)
 766                usage
 767        esac
 768        ;;
 769esac