contrib / examples / git-am.shon commit Merge branch 'dt/log-follow-config' (50337d0)
   1#!/bin/sh
   2#
   3# Copyright (c) 2005, 2006 Junio C Hamano
   4
   5SUBDIRECTORY_OK=Yes
   6OPTIONS_KEEPDASHDASH=
   7OPTIONS_STUCKLONG=t
   8OPTIONS_SPEC="\
   9git am [options] [(<mbox>|<Maildir>)...]
  10git am [options] (--continue | --skip | --abort)
  11--
  12i,interactive   run interactively
  13b,binary*       (historical option -- no-op)
  143,3way          allow fall back on 3way merging if needed
  15q,quiet         be quiet
  16s,signoff       add a Signed-off-by line to the commit message
  17u,utf8          recode into utf8 (default)
  18k,keep          pass -k flag to git-mailinfo
  19keep-non-patch  pass -b flag to git-mailinfo
  20m,message-id    pass -m flag to git-mailinfo
  21keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
  22no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
  23c,scissors      strip everything before a scissors line
  24whitespace=     pass it through git-apply
  25ignore-space-change pass it through git-apply
  26ignore-whitespace pass it through git-apply
  27directory=      pass it through git-apply
  28exclude=        pass it through git-apply
  29include=        pass it through git-apply
  30C=              pass it through git-apply
  31p=              pass it through git-apply
  32patch-format=   format the patch(es) are in
  33reject          pass it through git-apply
  34resolvemsg=     override error message when patch failure occurs
  35continue        continue applying patches after resolving a conflict
  36r,resolved      synonyms for --continue
  37skip            skip the current patch
  38abort           restore the original branch and abort the patching operation.
  39committer-date-is-author-date    lie about committer date
  40ignore-date     use current timestamp for author date
  41rerere-autoupdate update the index with reused conflict resolution if possible
  42S,gpg-sign?     GPG-sign commits
  43rebasing*       (internal use for git-rebase)"
  44
  45. git-sh-setup
  46. git-sh-i18n
  47prefix=$(git rev-parse --show-prefix)
  48set_reflog_action am
  49require_work_tree
  50cd_to_toplevel
  51
  52git var GIT_COMMITTER_IDENT >/dev/null ||
  53        die "$(gettext "You need to set your committer info first")"
  54
  55if git rev-parse --verify -q HEAD >/dev/null
  56then
  57        HAS_HEAD=yes
  58else
  59        HAS_HEAD=
  60fi
  61
  62cmdline="git am"
  63if test '' != "$interactive"
  64then
  65        cmdline="$cmdline -i"
  66fi
  67if test '' != "$threeway"
  68then
  69        cmdline="$cmdline -3"
  70fi
  71
  72empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
  73
  74sq () {
  75        git rev-parse --sq-quote "$@"
  76}
  77
  78stop_here () {
  79    echo "$1" >"$dotest/next"
  80    git rev-parse --verify -q HEAD >"$dotest/abort-safety"
  81    exit 1
  82}
  83
  84safe_to_abort () {
  85        if test -f "$dotest/dirtyindex"
  86        then
  87                return 1
  88        fi
  89
  90        if ! test -f "$dotest/abort-safety"
  91        then
  92                return 0
  93        fi
  94
  95        abort_safety=$(cat "$dotest/abort-safety")
  96        if test "z$(git rev-parse --verify -q HEAD)" = "z$abort_safety"
  97        then
  98                return 0
  99        fi
 100        gettextln "You seem to have moved HEAD since the last 'am' failure.
 101Not rewinding to ORIG_HEAD" >&2
 102        return 1
 103}
 104
 105stop_here_user_resolve () {
 106    if [ -n "$resolvemsg" ]; then
 107            printf '%s\n' "$resolvemsg"
 108            stop_here $1
 109    fi
 110    eval_gettextln "When you have resolved this problem, run \"\$cmdline --continue\".
 111If you prefer to skip this patch, run \"\$cmdline --skip\" instead.
 112To restore the original branch and stop patching, run \"\$cmdline --abort\"."
 113
 114    stop_here $1
 115}
 116
 117go_next () {
 118        rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
 119                "$dotest/patch" "$dotest/info"
 120        echo "$next" >"$dotest/next"
 121        this=$next
 122}
 123
 124cannot_fallback () {
 125        echo "$1"
 126        gettextln "Cannot fall back to three-way merge."
 127        exit 1
 128}
 129
 130fall_back_3way () {
 131    O_OBJECT=$(cd "$GIT_OBJECT_DIRECTORY" && pwd)
 132
 133    rm -fr "$dotest"/patch-merge-*
 134    mkdir "$dotest/patch-merge-tmp-dir"
 135
 136    # First see if the patch records the index info that we can use.
 137    cmd="git apply $git_apply_opt --build-fake-ancestor" &&
 138    cmd="$cmd "'"$dotest/patch-merge-tmp-index" "$dotest/patch"' &&
 139    eval "$cmd" &&
 140    GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 141    git write-tree >"$dotest/patch-merge-base+" ||
 142    cannot_fallback "$(gettext "Repository lacks necessary blobs to fall back on 3-way merge.")"
 143
 144    say "$(gettext "Using index info to reconstruct a base tree...")"
 145
 146    cmd='GIT_INDEX_FILE="$dotest/patch-merge-tmp-index"'
 147
 148    if test -z "$GIT_QUIET"
 149    then
 150        eval "$cmd git diff-index --cached --diff-filter=AM --name-status HEAD"
 151    fi
 152
 153    cmd="$cmd git apply --cached $git_apply_opt"' <"$dotest/patch"'
 154    if eval "$cmd"
 155    then
 156        mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 157        mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
 158    else
 159        cannot_fallback "$(gettext "Did you hand edit your patch?
 160It does not apply to blobs recorded in its index.")"
 161    fi
 162
 163    test -f "$dotest/patch-merge-index" &&
 164    his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
 165    orig_tree=$(cat "$dotest/patch-merge-base") &&
 166    rm -fr "$dotest"/patch-merge-* || exit 1
 167
 168    say "$(gettext "Falling back to patching base and 3-way merge...")"
 169
 170    # This is not so wrong.  Depending on which base we picked,
 171    # orig_tree may be wildly different from ours, but his_tree
 172    # has the same set of wildly different changes in parts the
 173    # patch did not touch, so recursive ends up canceling them,
 174    # saying that we reverted all those changes.
 175
 176    eval GITHEAD_$his_tree='"$FIRSTLINE"'
 177    export GITHEAD_$his_tree
 178    if test -n "$GIT_QUIET"
 179    then
 180            GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
 181    fi
 182    our_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree)
 183    git-merge-recursive $orig_tree -- $our_tree $his_tree || {
 184            git rerere $allow_rerere_autoupdate
 185            die "$(gettext "Failed to merge in the changes.")"
 186    }
 187    unset GITHEAD_$his_tree
 188}
 189
 190clean_abort () {
 191        test $# = 0 || echo >&2 "$@"
 192        rm -fr "$dotest"
 193        exit 1
 194}
 195
 196patch_format=
 197
 198check_patch_format () {
 199        # early return if patch_format was set from the command line
 200        if test -n "$patch_format"
 201        then
 202                return 0
 203        fi
 204
 205        # we default to mbox format if input is from stdin and for
 206        # directories
 207        if test $# = 0 || test "x$1" = "x-" || test -d "$1"
 208        then
 209                patch_format=mbox
 210                return 0
 211        fi
 212
 213        # otherwise, check the first few non-blank lines of the first
 214        # patch to try to detect its format
 215        {
 216                # Start from first line containing non-whitespace
 217                l1=
 218                while test -z "$l1"
 219                do
 220                        read l1 || break
 221                done
 222                read l2
 223                read l3
 224                case "$l1" in
 225                "From "* | "From: "*)
 226                        patch_format=mbox
 227                        ;;
 228                '# This series applies on GIT commit'*)
 229                        patch_format=stgit-series
 230                        ;;
 231                "# HG changeset patch")
 232                        patch_format=hg
 233                        ;;
 234                *)
 235                        # if the second line is empty and the third is
 236                        # a From, Author or Date entry, this is very
 237                        # likely an StGIT patch
 238                        case "$l2,$l3" in
 239                        ,"From: "* | ,"Author: "* | ,"Date: "*)
 240                                patch_format=stgit
 241                                ;;
 242                        *)
 243                                ;;
 244                        esac
 245                        ;;
 246                esac
 247                if test -z "$patch_format" &&
 248                        test -n "$l1" &&
 249                        test -n "$l2" &&
 250                        test -n "$l3"
 251                then
 252                        # This begins with three non-empty lines.  Is this a
 253                        # piece of e-mail a-la RFC2822?  Grab all the headers,
 254                        # discarding the indented remainder of folded lines,
 255                        # and see if it looks like that they all begin with the
 256                        # header field names...
 257                        tr -d '\015' <"$1" |
 258                        sed -n -e '/^$/q' -e '/^[       ]/d' -e p |
 259                        sane_egrep -v '^[!-9;-~]+:' >/dev/null ||
 260                        patch_format=mbox
 261                fi
 262        } < "$1" || clean_abort
 263}
 264
 265split_patches () {
 266        case "$patch_format" in
 267        mbox)
 268                if test t = "$keepcr"
 269                then
 270                    keep_cr=--keep-cr
 271                else
 272                    keep_cr=
 273                fi
 274                git mailsplit -d"$prec" -o"$dotest" -b $keep_cr -- "$@" > "$dotest/last" ||
 275                clean_abort
 276                ;;
 277        stgit-series)
 278                if test $# -ne 1
 279                then
 280                        clean_abort "$(gettext "Only one StGIT patch series can be applied at once")"
 281                fi
 282                series_dir=$(dirname "$1")
 283                series_file="$1"
 284                shift
 285                {
 286                        set x
 287                        while read filename
 288                        do
 289                                set "$@" "$series_dir/$filename"
 290                        done
 291                        # remove the safety x
 292                        shift
 293                        # remove the arg coming from the first-line comment
 294                        shift
 295                } < "$series_file" || clean_abort
 296                # set the patch format appropriately
 297                patch_format=stgit
 298                # now handle the actual StGIT patches
 299                split_patches "$@"
 300                ;;
 301        stgit)
 302                this=0
 303                test 0 -eq "$#" && set -- -
 304                for stgit in "$@"
 305                do
 306                        this=$(expr "$this" + 1)
 307                        msgnum=$(printf "%0${prec}d" $this)
 308                        # Perl version of StGIT parse_patch. The first nonemptyline
 309                        # not starting with Author, From or Date is the
 310                        # subject, and the body starts with the next nonempty
 311                        # line not starting with Author, From or Date
 312                        @@PERL@@ -ne 'BEGIN { $subject = 0 }
 313                                if ($subject > 1) { print ; }
 314                                elsif (/^\s+$/) { next ; }
 315                                elsif (/^Author:/) { s/Author/From/ ; print ;}
 316                                elsif (/^(From|Date)/) { print ; }
 317                                elsif ($subject) {
 318                                        $subject = 2 ;
 319                                        print "\n" ;
 320                                        print ;
 321                                } else {
 322                                        print "Subject: ", $_ ;
 323                                        $subject = 1;
 324                                }
 325                        ' -- "$stgit" >"$dotest/$msgnum" || clean_abort
 326                done
 327                echo "$this" > "$dotest/last"
 328                this=
 329                msgnum=
 330                ;;
 331        hg)
 332                this=0
 333                test 0 -eq "$#" && set -- -
 334                for hg in "$@"
 335                do
 336                        this=$(( $this + 1 ))
 337                        msgnum=$(printf "%0${prec}d" $this)
 338                        # hg stores changeset metadata in #-commented lines preceding
 339                        # the commit message and diff(s). The only metadata we care about
 340                        # are the User and Date (Node ID and Parent are hashes which are
 341                        # only relevant to the hg repository and thus not useful to us)
 342                        # Since we cannot guarantee that the commit message is in
 343                        # git-friendly format, we put no Subject: line and just consume
 344                        # all of the message as the body
 345                        LANG=C LC_ALL=C @@PERL@@ -M'POSIX qw(strftime)' -ne 'BEGIN { $subject = 0 }
 346                                if ($subject) { print ; }
 347                                elsif (/^\# User /) { s/\# User/From:/ ; print ; }
 348                                elsif (/^\# Date /) {
 349                                        my ($hashsign, $str, $time, $tz) = split ;
 350                                        $tz_str = sprintf "%+05d", (0-$tz)/36;
 351                                        print "Date: " .
 352                                              strftime("%a, %d %b %Y %H:%M:%S ",
 353                                                       gmtime($time-$tz))
 354                                              . "$tz_str\n";
 355                                } elsif (/^\# /) { next ; }
 356                                else {
 357                                        print "\n", $_ ;
 358                                        $subject = 1;
 359                                }
 360                        ' -- "$hg" >"$dotest/$msgnum" || clean_abort
 361                done
 362                echo "$this" >"$dotest/last"
 363                this=
 364                msgnum=
 365                ;;
 366        *)
 367                if test -n "$patch_format"
 368                then
 369                        clean_abort "$(eval_gettext "Patch format \$patch_format is not supported.")"
 370                else
 371                        clean_abort "$(gettext "Patch format detection failed.")"
 372                fi
 373                ;;
 374        esac
 375}
 376
 377prec=4
 378dotest="$GIT_DIR/rebase-apply"
 379sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
 380messageid= resolvemsg= resume= scissors= no_inbody_headers=
 381git_apply_opt=
 382committer_date_is_author_date=
 383ignore_date=
 384allow_rerere_autoupdate=
 385gpg_sign_opt=
 386threeway=
 387
 388if test "$(git config --bool --get am.messageid)" = true
 389then
 390    messageid=t
 391fi
 392
 393if test "$(git config --bool --get am.keepcr)" = true
 394then
 395    keepcr=t
 396fi
 397
 398while test $# != 0
 399do
 400        case "$1" in
 401        -i|--interactive)
 402                interactive=t ;;
 403        -b|--binary)
 404                gettextln >&2 "The -b/--binary option has been a no-op for long time, and
 405it will be removed. Please do not use it anymore."
 406                ;;
 407        -3|--3way)
 408                threeway=t ;;
 409        -s|--signoff)
 410                sign=t ;;
 411        -u|--utf8)
 412                utf8=t ;; # this is now default
 413        --no-utf8)
 414                utf8= ;;
 415        -m|--message-id)
 416                messageid=t ;;
 417        --no-message-id)
 418                messageid=f ;;
 419        -k|--keep)
 420                keep=t ;;
 421        --keep-non-patch)
 422                keep=b ;;
 423        -c|--scissors)
 424                scissors=t ;;
 425        --no-scissors)
 426                scissors=f ;;
 427        -r|--resolved|--continue)
 428                resolved=t ;;
 429        --skip)
 430                skip=t ;;
 431        --abort)
 432                abort=t ;;
 433        --rebasing)
 434                rebasing=t threeway=t ;;
 435        --resolvemsg=*)
 436                resolvemsg="${1#--resolvemsg=}" ;;
 437        --whitespace=*|--directory=*|--exclude=*|--include=*)
 438                git_apply_opt="$git_apply_opt $(sq "$1")" ;;
 439        -C*|-p*)
 440                git_apply_opt="$git_apply_opt $(sq "$1")" ;;
 441        --patch-format=*)
 442                patch_format="${1#--patch-format=}" ;;
 443        --reject|--ignore-whitespace|--ignore-space-change)
 444                git_apply_opt="$git_apply_opt $1" ;;
 445        --committer-date-is-author-date)
 446                committer_date_is_author_date=t ;;
 447        --ignore-date)
 448                ignore_date=t ;;
 449        --rerere-autoupdate|--no-rerere-autoupdate)
 450                allow_rerere_autoupdate="$1" ;;
 451        -q|--quiet)
 452                GIT_QUIET=t ;;
 453        --keep-cr)
 454                keepcr=t ;;
 455        --no-keep-cr)
 456                keepcr=f ;;
 457        --gpg-sign)
 458                gpg_sign_opt=-S ;;
 459        --gpg-sign=*)
 460                gpg_sign_opt="-S${1#--gpg-sign=}" ;;
 461        --)
 462                shift; break ;;
 463        *)
 464                usage ;;
 465        esac
 466        shift
 467done
 468
 469# If the dotest directory exists, but we have finished applying all the
 470# patches in them, clear it out.
 471if test -d "$dotest" &&
 472   test -f "$dotest/last" &&
 473   test -f "$dotest/next" &&
 474   last=$(cat "$dotest/last") &&
 475   next=$(cat "$dotest/next") &&
 476   test $# != 0 &&
 477   test "$next" -gt "$last"
 478then
 479   rm -fr "$dotest"
 480fi
 481
 482if test -d "$dotest" && test -f "$dotest/last" && test -f "$dotest/next"
 483then
 484        case "$#,$skip$resolved$abort" in
 485        0,*t*)
 486                # Explicit resume command and we do not have file, so
 487                # we are happy.
 488                : ;;
 489        0,)
 490                # No file input but without resume parameters; catch
 491                # user error to feed us a patch from standard input
 492                # when there is already $dotest.  This is somewhat
 493                # unreliable -- stdin could be /dev/null for example
 494                # and the caller did not intend to feed us a patch but
 495                # wanted to continue unattended.
 496                test -t 0
 497                ;;
 498        *)
 499                false
 500                ;;
 501        esac ||
 502        die "$(eval_gettext "previous rebase directory \$dotest still exists but mbox given.")"
 503        resume=yes
 504
 505        case "$skip,$abort" in
 506        t,t)
 507                die "$(gettext "Please make up your mind. --skip or --abort?")"
 508                ;;
 509        t,)
 510                git rerere clear
 511                head_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree) &&
 512                git read-tree --reset -u $head_tree $head_tree &&
 513                index_tree=$(git write-tree) &&
 514                git read-tree -m -u $index_tree $head_tree
 515                git read-tree -m $head_tree
 516                ;;
 517        ,t)
 518                if test -f "$dotest/rebasing"
 519                then
 520                        exec git rebase --abort
 521                fi
 522                git rerere clear
 523                if safe_to_abort
 524                then
 525                        head_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree) &&
 526                        git read-tree --reset -u $head_tree $head_tree &&
 527                        index_tree=$(git write-tree) &&
 528                        orig_head=$(git rev-parse --verify -q ORIG_HEAD || echo $empty_tree) &&
 529                        git read-tree -m -u $index_tree $orig_head
 530                        if git rev-parse --verify -q ORIG_HEAD >/dev/null 2>&1
 531                        then
 532                                git reset ORIG_HEAD
 533                        else
 534                                git read-tree $empty_tree
 535                                curr_branch=$(git symbolic-ref HEAD 2>/dev/null) &&
 536                                git update-ref -d $curr_branch
 537                        fi
 538                fi
 539                rm -fr "$dotest"
 540                exit ;;
 541        esac
 542        rm -f "$dotest/dirtyindex"
 543else
 544        # Possible stray $dotest directory in the independent-run
 545        # case; in the --rebasing case, it is upto the caller
 546        # (git-rebase--am) to take care of stray directories.
 547        if test -d "$dotest" && test -z "$rebasing"
 548        then
 549                case "$skip,$resolved,$abort" in
 550                ,,t)
 551                        rm -fr "$dotest"
 552                        exit 0
 553                        ;;
 554                *)
 555                        die "$(eval_gettext "Stray \$dotest directory found.
 556Use \"git am --abort\" to remove it.")"
 557                        ;;
 558                esac
 559        fi
 560
 561        # Make sure we are not given --skip, --continue, or --abort
 562        test "$skip$resolved$abort" = "" ||
 563                die "$(gettext "Resolve operation not in progress, we are not resuming.")"
 564
 565        # Start afresh.
 566        mkdir -p "$dotest" || exit
 567
 568        if test -n "$prefix" && test $# != 0
 569        then
 570                first=t
 571                for arg
 572                do
 573                        test -n "$first" && {
 574                                set x
 575                                first=
 576                        }
 577                        if is_absolute_path "$arg"
 578                        then
 579                                set "$@" "$arg"
 580                        else
 581                                set "$@" "$prefix$arg"
 582                        fi
 583                done
 584                shift
 585        fi
 586
 587        check_patch_format "$@"
 588
 589        split_patches "$@"
 590
 591        # -i can and must be given when resuming; everything
 592        # else is kept
 593        echo " $git_apply_opt" >"$dotest/apply-opt"
 594        echo "$threeway" >"$dotest/threeway"
 595        echo "$sign" >"$dotest/sign"
 596        echo "$utf8" >"$dotest/utf8"
 597        echo "$keep" >"$dotest/keep"
 598        echo "$messageid" >"$dotest/messageid"
 599        echo "$scissors" >"$dotest/scissors"
 600        echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
 601        echo "$GIT_QUIET" >"$dotest/quiet"
 602        echo 1 >"$dotest/next"
 603        if test -n "$rebasing"
 604        then
 605                : >"$dotest/rebasing"
 606        else
 607                : >"$dotest/applying"
 608                if test -n "$HAS_HEAD"
 609                then
 610                        git update-ref ORIG_HEAD HEAD
 611                else
 612                        git update-ref -d ORIG_HEAD >/dev/null 2>&1
 613                fi
 614        fi
 615fi
 616
 617git update-index -q --refresh
 618
 619case "$resolved" in
 620'')
 621        case "$HAS_HEAD" in
 622        '')
 623                files=$(git ls-files) ;;
 624        ?*)
 625                files=$(git diff-index --cached --name-only HEAD --) ;;
 626        esac || exit
 627        if test "$files"
 628        then
 629                test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
 630                die "$(eval_gettext "Dirty index: cannot apply patches (dirty: \$files)")"
 631        fi
 632esac
 633
 634# Now, decide what command line options we will give to the git
 635# commands we invoke, based on the result of parsing command line
 636# options and previous invocation state stored in $dotest/ files.
 637
 638if test "$(cat "$dotest/utf8")" = t
 639then
 640        utf8=-u
 641else
 642        utf8=-n
 643fi
 644keep=$(cat "$dotest/keep")
 645case "$keep" in
 646t)
 647        keep=-k ;;
 648b)
 649        keep=-b ;;
 650*)
 651        keep= ;;
 652esac
 653case "$(cat "$dotest/messageid")" in
 654t)
 655        messageid=-m ;;
 656f)
 657        messageid= ;;
 658esac
 659case "$(cat "$dotest/scissors")" in
 660t)
 661        scissors=--scissors ;;
 662f)
 663        scissors=--no-scissors ;;
 664esac
 665if test "$(cat "$dotest/no_inbody_headers")" = t
 666then
 667        no_inbody_headers=--no-inbody-headers
 668else
 669        no_inbody_headers=
 670fi
 671if test "$(cat "$dotest/quiet")" = t
 672then
 673        GIT_QUIET=t
 674fi
 675if test "$(cat "$dotest/threeway")" = t
 676then
 677        threeway=t
 678fi
 679git_apply_opt=$(cat "$dotest/apply-opt")
 680if test "$(cat "$dotest/sign")" = t
 681then
 682        SIGNOFF=$(git var GIT_COMMITTER_IDENT | sed -e '
 683                        s/>.*/>/
 684                        s/^/Signed-off-by: /'
 685                )
 686else
 687        SIGNOFF=
 688fi
 689
 690last=$(cat "$dotest/last")
 691this=$(cat "$dotest/next")
 692if test "$skip" = t
 693then
 694        this=$(expr "$this" + 1)
 695        resume=
 696fi
 697
 698while test "$this" -le "$last"
 699do
 700        msgnum=$(printf "%0${prec}d" $this)
 701        next=$(expr "$this" + 1)
 702        test -f "$dotest/$msgnum" || {
 703                resume=
 704                go_next
 705                continue
 706        }
 707
 708        # If we are not resuming, parse and extract the patch information
 709        # into separate files:
 710        #  - info records the authorship and title
 711        #  - msg is the rest of commit log message
 712        #  - patch is the patch body.
 713        #
 714        # When we are resuming, these files are either already prepared
 715        # by the user, or the user can tell us to do so by --continue flag.
 716        case "$resume" in
 717        '')
 718                if test -f "$dotest/rebasing"
 719                then
 720                        commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
 721                                -e q "$dotest/$msgnum") &&
 722                        test "$(git cat-file -t "$commit")" = commit ||
 723                                stop_here $this
 724                        git cat-file commit "$commit" |
 725                        sed -e '1,/^$/d' >"$dotest/msg-clean"
 726                        echo "$commit" >"$dotest/original-commit"
 727                        get_author_ident_from_commit "$commit" >"$dotest/author-script"
 728                        git diff-tree --root --binary --full-index "$commit" >"$dotest/patch"
 729                else
 730                        git mailinfo $keep $no_inbody_headers $messageid $scissors $utf8 "$dotest/msg" "$dotest/patch" \
 731                                <"$dotest/$msgnum" >"$dotest/info" ||
 732                                stop_here $this
 733
 734                        # skip pine's internal folder data
 735                        sane_grep '^Author: Mail System Internal Data$' \
 736                                <"$dotest"/info >/dev/null &&
 737                                go_next && continue
 738
 739                        test -s "$dotest/patch" || {
 740                                eval_gettextln "Patch is empty.  Was it split wrong?
 741If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
 742To restore the original branch and stop patching run \"\$cmdline --abort\"."
 743                                stop_here $this
 744                        }
 745                        rm -f "$dotest/original-commit" "$dotest/author-script"
 746                        {
 747                                sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
 748                                echo
 749                                cat "$dotest/msg"
 750                        } |
 751                        git stripspace > "$dotest/msg-clean"
 752                fi
 753                ;;
 754        esac
 755
 756        if test -f "$dotest/author-script"
 757        then
 758                eval $(cat "$dotest/author-script")
 759        else
 760                GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 761                GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 762                GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 763        fi
 764
 765        if test -z "$GIT_AUTHOR_EMAIL"
 766        then
 767                gettextln "Patch does not have a valid e-mail address."
 768                stop_here $this
 769        fi
 770
 771        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 772
 773        case "$resume" in
 774        '')
 775            if test '' != "$SIGNOFF"
 776            then
 777                LAST_SIGNED_OFF_BY=$(
 778                    sed -ne '/^Signed-off-by: /p' \
 779                    "$dotest/msg-clean" |
 780                    sed -ne '$p'
 781                )
 782                ADD_SIGNOFF=$(
 783                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 784                    test '' = "$LAST_SIGNED_OFF_BY" && echo
 785                    echo "$SIGNOFF"
 786                })
 787            else
 788                ADD_SIGNOFF=
 789            fi
 790            {
 791                if test -s "$dotest/msg-clean"
 792                then
 793                        cat "$dotest/msg-clean"
 794                fi
 795                if test '' != "$ADD_SIGNOFF"
 796                then
 797                        echo "$ADD_SIGNOFF"
 798                fi
 799            } >"$dotest/final-commit"
 800            ;;
 801        *)
 802                case "$resolved$interactive" in
 803                tt)
 804                        # This is used only for interactive view option.
 805                        git diff-index -p --cached HEAD -- >"$dotest/patch"
 806                        ;;
 807                esac
 808        esac
 809
 810        resume=
 811        if test "$interactive" = t
 812        then
 813            test -t 0 ||
 814            die "$(gettext "cannot be interactive without stdin connected to a terminal.")"
 815            action=again
 816            while test "$action" = again
 817            do
 818                gettextln "Commit Body is:"
 819                echo "--------------------------"
 820                cat "$dotest/final-commit"
 821                echo "--------------------------"
 822                # TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a]
 823                # in your translation. The program will only accept English
 824                # input at this point.
 825                gettext "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 826                read reply
 827                case "$reply" in
 828                [yY]*) action=yes ;;
 829                [aA]*) action=yes interactive= ;;
 830                [nN]*) action=skip ;;
 831                [eE]*) git_editor "$dotest/final-commit"
 832                       action=again ;;
 833                [vV]*) action=again
 834                       git_pager "$dotest/patch" ;;
 835                *)     action=again ;;
 836                esac
 837            done
 838        else
 839            action=yes
 840        fi
 841
 842        if test $action = skip
 843        then
 844                go_next
 845                continue
 846        fi
 847
 848        hook="$(git rev-parse --git-path hooks/applypatch-msg)"
 849        if test -x "$hook"
 850        then
 851                "$hook" "$dotest/final-commit" || stop_here $this
 852        fi
 853
 854        if test -f "$dotest/final-commit"
 855        then
 856                FIRSTLINE=$(sed 1q "$dotest/final-commit")
 857        else
 858                FIRSTLINE=""
 859        fi
 860
 861        say "$(eval_gettext "Applying: \$FIRSTLINE")"
 862
 863        case "$resolved" in
 864        '')
 865                # When we are allowed to fall back to 3-way later, don't give
 866                # false errors during the initial attempt.
 867                squelch=
 868                if test "$threeway" = t
 869                then
 870                        squelch='>/dev/null 2>&1 '
 871                fi
 872                eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
 873                apply_status=$?
 874                ;;
 875        t)
 876                # Resolved means the user did all the hard work, and
 877                # we do not have to do any patch application.  Just
 878                # trust what the user has in the index file and the
 879                # working tree.
 880                resolved=
 881                git diff-index --quiet --cached HEAD -- && {
 882                        gettextln "No changes - did you forget to use 'git add'?
 883If there is nothing left to stage, chances are that something else
 884already introduced the same changes; you might want to skip this patch."
 885                        stop_here_user_resolve $this
 886                }
 887                unmerged=$(git ls-files -u)
 888                if test -n "$unmerged"
 889                then
 890                        gettextln "You still have unmerged paths in your index
 891did you forget to use 'git add'?"
 892                        stop_here_user_resolve $this
 893                fi
 894                apply_status=0
 895                git rerere
 896                ;;
 897        esac
 898
 899        if test $apply_status != 0 && test "$threeway" = t
 900        then
 901                if (fall_back_3way)
 902                then
 903                    # Applying the patch to an earlier tree and merging the
 904                    # result may have produced the same tree as ours.
 905                    git diff-index --quiet --cached HEAD -- && {
 906                        say "$(gettext "No changes -- Patch already applied.")"
 907                        go_next
 908                        continue
 909                    }
 910                    # clear apply_status -- we have successfully merged.
 911                    apply_status=0
 912                fi
 913        fi
 914        if test $apply_status != 0
 915        then
 916                eval_gettextln 'Patch failed at $msgnum $FIRSTLINE'
 917                if test "$(git config --bool advice.amworkdir)" != false
 918                then
 919                        eval_gettextln 'The copy of the patch that failed is found in:
 920   $dotest/patch'
 921                fi
 922                stop_here_user_resolve $this
 923        fi
 924
 925        hook="$(git rev-parse --git-path hooks/pre-applypatch)"
 926        if test -x "$hook"
 927        then
 928                "$hook" || stop_here $this
 929        fi
 930
 931        tree=$(git write-tree) &&
 932        commit=$(
 933                if test -n "$ignore_date"
 934                then
 935                        GIT_AUTHOR_DATE=
 936                fi
 937                parent=$(git rev-parse --verify -q HEAD) ||
 938                say >&2 "$(gettext "applying to an empty history")"
 939
 940                if test -n "$committer_date_is_author_date"
 941                then
 942                        GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
 943                        export GIT_COMMITTER_DATE
 944                fi &&
 945                git commit-tree ${parent:+-p} $parent ${gpg_sign_opt:+"$gpg_sign_opt"} $tree  \
 946                        <"$dotest/final-commit"
 947        ) &&
 948        git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 949        stop_here $this
 950
 951        if test -f "$dotest/original-commit"; then
 952                echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
 953        fi
 954
 955        hook="$(git rev-parse --git-path hooks/post-applypatch)"
 956        test -x "$hook" && "$hook"
 957
 958        go_next
 959done
 960
 961if test -s "$dotest"/rewritten; then
 962    git notes copy --for-rewrite=rebase < "$dotest"/rewritten
 963    hook="$(git rev-parse --git-path hooks/post-rewrite)"
 964    if test -x "$hook"; then
 965        "$hook" rebase < "$dotest"/rewritten
 966    fi
 967fi
 968
 969# If am was called with --rebasing (from git-rebase--am), it's up to
 970# the caller to take care of housekeeping.
 971if ! test -f "$dotest/rebasing"
 972then
 973        rm -fr "$dotest"
 974        git gc --auto
 975fi