Andrew's git / gitweb.git / git-am.sh
?
git-am.shon commit MinGW: truncate exit()'s argument to lowest 8 bits (47e3de0)
   1#!/bin/sh
   2#
   3# Copyright (c) 2005, 2006 Junio C Hamano
   4
   5SUBDIRECTORY_OK=Yes
   6OPTIONS_KEEPDASHDASH=
   7OPTIONS_SPEC="\
   8git am [options] [<mbox>|<Maildir>...]
   9git am [options] (--resolved | --skip | --abort)
  10--
  11i,interactive   run interactively
  12b,binary*       (historical option -- no-op)
  133,3way          allow fall back on 3way merging if needed
  14q,quiet         be quiet
  15s,signoff       add a Signed-off-by line to the commit message
  16u,utf8          recode into utf8 (default)
  17k,keep          pass -k flag to git-mailinfo
  18whitespace=     pass it through git-apply
  19directory=      pass it through git-apply
  20C=              pass it through git-apply
  21p=              pass it through git-apply
  22reject          pass it through git-apply
  23resolvemsg=     override error message when patch failure occurs
  24r,resolved      to be used after a patch failure
  25skip            skip the current patch
  26abort           restore the original branch and abort the patching operation.
  27committer-date-is-author-date    lie about committer date
  28ignore-date     use current timestamp for author date
  29rebasing*       (internal use for git-rebase)"
  30
  31. git-sh-setup
  32prefix=$(git rev-parse --show-prefix)
  33set_reflog_action am
  34require_work_tree
  35cd_to_toplevel
  36
  37git var GIT_COMMITTER_IDENT >/dev/null ||
  38        die "You need to set your committer info first"
  39
  40if git rev-parse --verify -q HEAD >/dev/null
  41then
  42        HAS_HEAD=yes
  43else
  44        HAS_HEAD=
  45fi
  46
  47sq () {
  48        git rev-parse --sq-quote "$@"
  49}
  50
  51stop_here () {
  52    echo "$1" >"$dotest/next"
  53    exit 1
  54}
  55
  56stop_here_user_resolve () {
  57    if [ -n "$resolvemsg" ]; then
  58            printf '%s\n' "$resolvemsg"
  59            stop_here $1
  60    fi
  61    cmdline="git am"
  62    if test '' != "$interactive"
  63    then
  64        cmdline="$cmdline -i"
  65    fi
  66    if test '' != "$threeway"
  67    then
  68        cmdline="$cmdline -3"
  69    fi
  70    echo "When you have resolved this problem run \"$cmdline --resolved\"."
  71    echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
  72    echo "To restore the original branch and stop patching run \"$cmdline --abort\"."
  73
  74    stop_here $1
  75}
  76
  77go_next () {
  78        rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  79                "$dotest/patch" "$dotest/info"
  80        echo "$next" >"$dotest/next"
  81        this=$next
  82}
  83
  84cannot_fallback () {
  85        echo "$1"
  86        echo "Cannot fall back to three-way merge."
  87        exit 1
  88}
  89
  90fall_back_3way () {
  91    O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  92
  93    rm -fr "$dotest"/patch-merge-*
  94    mkdir "$dotest/patch-merge-tmp-dir"
  95
  96    # First see if the patch records the index info that we can use.
  97    git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
  98        "$dotest/patch" &&
  99    GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 100    git write-tree >"$dotest/patch-merge-base+" ||
 101    cannot_fallback "Repository lacks necessary blobs to fall back on 3-way merge."
 102
 103    say Using index info to reconstruct a base tree...
 104    if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 105        git apply --cached <"$dotest/patch"
 106    then
 107        mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 108        mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
 109    else
 110        cannot_fallback "Did you hand edit your patch?
 111It does not apply to blobs recorded in its index."
 112    fi
 113
 114    test -f "$dotest/patch-merge-index" &&
 115    his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
 116    orig_tree=$(cat "$dotest/patch-merge-base") &&
 117    rm -fr "$dotest"/patch-merge-* || exit 1
 118
 119    say Falling back to patching base and 3-way merge...
 120
 121    # This is not so wrong.  Depending on which base we picked,
 122    # orig_tree may be wildly different from ours, but his_tree
 123    # has the same set of wildly different changes in parts the
 124    # patch did not touch, so recursive ends up canceling them,
 125    # saying that we reverted all those changes.
 126
 127    eval GITHEAD_$his_tree='"$FIRSTLINE"'
 128    export GITHEAD_$his_tree
 129    if test -n "$GIT_QUIET"
 130    then
 131            export GIT_MERGE_VERBOSITY=0
 132    fi
 133    git-merge-recursive $orig_tree -- HEAD $his_tree || {
 134            git rerere
 135            echo Failed to merge in the changes.
 136            exit 1
 137    }
 138    unset GITHEAD_$his_tree
 139}
 140
 141prec=4
 142dotest="$GIT_DIR/rebase-apply"
 143sign= utf8=t keep= skip= interactive= resolved= rebasing= abort=
 144resolvemsg= resume=
 145git_apply_opt=
 146committer_date_is_author_date=
 147ignore_date=
 148
 149while test $# != 0
 150do
 151        case "$1" in
 152        -i|--interactive)
 153                interactive=t ;;
 154        -b|--binary)
 155                : ;;
 156        -3|--3way)
 157                threeway=t ;;
 158        -s|--signoff)
 159                sign=t ;;
 160        -u|--utf8)
 161                utf8=t ;; # this is now default
 162        --no-utf8)
 163                utf8= ;;
 164        -k|--keep)
 165                keep=t ;;
 166        -r|--resolved)
 167                resolved=t ;;
 168        --skip)
 169                skip=t ;;
 170        --abort)
 171                abort=t ;;
 172        --rebasing)
 173                rebasing=t threeway=t keep=t ;;
 174        -d|--dotest)
 175                die "-d option is no longer supported.  Do not use."
 176                ;;
 177        --resolvemsg)
 178                shift; resolvemsg=$1 ;;
 179        --whitespace|--directory)
 180                git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
 181        -C|-p)
 182                git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
 183        --reject)
 184                git_apply_opt="$git_apply_opt $1" ;;
 185        --committer-date-is-author-date)
 186                committer_date_is_author_date=t ;;
 187        --ignore-date)
 188                ignore_date=t ;;
 189        -q|--quiet)
 190                GIT_QUIET=t ;;
 191        --)
 192                shift; break ;;
 193        *)
 194                usage ;;
 195        esac
 196        shift
 197done
 198
 199# If the dotest directory exists, but we have finished applying all the
 200# patches in them, clear it out.
 201if test -d "$dotest" &&
 202   last=$(cat "$dotest/last") &&
 203   next=$(cat "$dotest/next") &&
 204   test $# != 0 &&
 205   test "$next" -gt "$last"
 206then
 207   rm -fr "$dotest"
 208fi
 209
 210if test -d "$dotest"
 211then
 212        case "$#,$skip$resolved$abort" in
 213        0,*t*)
 214                # Explicit resume command and we do not have file, so
 215                # we are happy.
 216                : ;;
 217        0,)
 218                # No file input but without resume parameters; catch
 219                # user error to feed us a patch from standard input
 220                # when there is already $dotest.  This is somewhat
 221                # unreliable -- stdin could be /dev/null for example
 222                # and the caller did not intend to feed us a patch but
 223                # wanted to continue unattended.
 224                test -t 0
 225                ;;
 226        *)
 227                false
 228                ;;
 229        esac ||
 230        die "previous rebase directory $dotest still exists but mbox given."
 231        resume=yes
 232
 233        case "$skip,$abort" in
 234        t,t)
 235                die "Please make up your mind. --skip or --abort?"
 236                ;;
 237        t,)
 238                git rerere clear
 239                git read-tree --reset -u HEAD HEAD
 240                orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
 241                git reset HEAD
 242                git update-ref ORIG_HEAD $orig_head
 243                ;;
 244        ,t)
 245                if test -f "$dotest/rebasing"
 246                then
 247                        exec git rebase --abort
 248                fi
 249                git rerere clear
 250                test -f "$dotest/dirtyindex" || {
 251                        git read-tree --reset -u HEAD ORIG_HEAD
 252                        git reset ORIG_HEAD
 253                }
 254                rm -fr "$dotest"
 255                exit ;;
 256        esac
 257        rm -f "$dotest/dirtyindex"
 258else
 259        # Make sure we are not given --skip, --resolved, nor --abort
 260        test "$skip$resolved$abort" = "" ||
 261                die "Resolve operation not in progress, we are not resuming."
 262
 263        # Start afresh.
 264        mkdir -p "$dotest" || exit
 265
 266        if test -n "$prefix" && test $# != 0
 267        then
 268                first=t
 269                for arg
 270                do
 271                        test -n "$first" && {
 272                                set x
 273                                first=
 274                        }
 275                        case "$arg" in
 276                        /*)
 277                                set "$@" "$arg" ;;
 278                        *)
 279                                set "$@" "$prefix$arg" ;;
 280                        esac
 281                done
 282                shift
 283        fi
 284        git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 285                rm -fr "$dotest"
 286                exit 1
 287        }
 288
 289        # -s, -u, -k, --whitespace, -3, -C, -q and -p flags are kept
 290        # for the resuming session after a patch failure.
 291        # -i can and must be given when resuming.
 292        echo " $git_apply_opt" >"$dotest/apply-opt"
 293        echo "$threeway" >"$dotest/threeway"
 294        echo "$sign" >"$dotest/sign"
 295        echo "$utf8" >"$dotest/utf8"
 296        echo "$keep" >"$dotest/keep"
 297        echo "$GIT_QUIET" >"$dotest/quiet"
 298        echo 1 >"$dotest/next"
 299        if test -n "$rebasing"
 300        then
 301                : >"$dotest/rebasing"
 302        else
 303                : >"$dotest/applying"
 304                if test -n "$HAS_HEAD"
 305                then
 306                        git update-ref ORIG_HEAD HEAD
 307                else
 308                        git update-ref -d ORIG_HEAD >/dev/null 2>&1
 309                fi
 310        fi
 311fi
 312
 313case "$resolved" in
 314'')
 315        case "$HAS_HEAD" in
 316        '')
 317                files=$(git ls-files) ;;
 318        ?*)
 319                files=$(git diff-index --cached --name-only HEAD --) ;;
 320        esac || exit
 321        if test "$files"
 322        then
 323                test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
 324                die "Dirty index: cannot apply patches (dirty: $files)"
 325        fi
 326esac
 327
 328if test "$(cat "$dotest/utf8")" = t
 329then
 330        utf8=-u
 331else
 332        utf8=-n
 333fi
 334if test "$(cat "$dotest/keep")" = t
 335then
 336        keep=-k
 337fi
 338if test "$(cat "$dotest/quiet")" = t
 339then
 340        GIT_QUIET=t
 341fi
 342if test "$(cat "$dotest/threeway")" = t
 343then
 344        threeway=t
 345fi
 346git_apply_opt=$(cat "$dotest/apply-opt")
 347if test "$(cat "$dotest/sign")" = t
 348then
 349        SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
 350                        s/>.*/>/
 351                        s/^/Signed-off-by: /'
 352                `
 353else
 354        SIGNOFF=
 355fi
 356
 357last=`cat "$dotest/last"`
 358this=`cat "$dotest/next"`
 359if test "$skip" = t
 360then
 361        this=`expr "$this" + 1`
 362        resume=
 363fi
 364
 365if test "$this" -gt "$last"
 366then
 367        say Nothing to do.
 368        rm -fr "$dotest"
 369        exit
 370fi
 371
 372while test "$this" -le "$last"
 373do
 374        msgnum=`printf "%0${prec}d" $this`
 375        next=`expr "$this" + 1`
 376        test -f "$dotest/$msgnum" || {
 377                resume=
 378                go_next
 379                continue
 380        }
 381
 382        # If we are not resuming, parse and extract the patch information
 383        # into separate files:
 384        #  - info records the authorship and title
 385        #  - msg is the rest of commit log message
 386        #  - patch is the patch body.
 387        #
 388        # When we are resuming, these files are either already prepared
 389        # by the user, or the user can tell us to do so by --resolved flag.
 390        case "$resume" in
 391        '')
 392                git mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 393                        <"$dotest/$msgnum" >"$dotest/info" ||
 394                        stop_here $this
 395
 396                # skip pine's internal folder data
 397                grep '^Author: Mail System Internal Data$' \
 398                        <"$dotest"/info >/dev/null &&
 399                        go_next && continue
 400
 401                test -s "$dotest/patch" || {
 402                        echo "Patch is empty.  Was it split wrong?"
 403                        stop_here $this
 404                }
 405                if test -f "$dotest/rebasing" &&
 406                        commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
 407                                -e q "$dotest/$msgnum") &&
 408                        test "$(git cat-file -t "$commit")" = commit
 409                then
 410                        git cat-file commit "$commit" |
 411                        sed -e '1,/^$/d' >"$dotest/msg-clean"
 412                else
 413                        SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 414                        case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 415
 416                        (printf '%s\n\n' "$SUBJECT"; cat "$dotest/msg") |
 417                                git stripspace > "$dotest/msg-clean"
 418                fi
 419                ;;
 420        esac
 421
 422        GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 423        GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 424        GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 425
 426        if test -z "$GIT_AUTHOR_EMAIL"
 427        then
 428                echo "Patch does not have a valid e-mail address."
 429                stop_here $this
 430        fi
 431
 432        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 433
 434        case "$resume" in
 435        '')
 436            if test '' != "$SIGNOFF"
 437            then
 438                LAST_SIGNED_OFF_BY=`
 439                    sed -ne '/^Signed-off-by: /p' \
 440                    "$dotest/msg-clean" |
 441                    sed -ne '$p'
 442                `
 443                ADD_SIGNOFF=`
 444                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 445                    test '' = "$LAST_SIGNED_OFF_BY" && echo
 446                    echo "$SIGNOFF"
 447                }`
 448            else
 449                ADD_SIGNOFF=
 450            fi
 451            {
 452                if test -s "$dotest/msg-clean"
 453                then
 454                        cat "$dotest/msg-clean"
 455                fi
 456                if test '' != "$ADD_SIGNOFF"
 457                then
 458                        echo "$ADD_SIGNOFF"
 459                fi
 460            } >"$dotest/final-commit"
 461            ;;
 462        *)
 463                case "$resolved$interactive" in
 464                tt)
 465                        # This is used only for interactive view option.
 466                        git diff-index -p --cached HEAD -- >"$dotest/patch"
 467                        ;;
 468                esac
 469        esac
 470
 471        resume=
 472        if test "$interactive" = t
 473        then
 474            test -t 0 ||
 475            die "cannot be interactive without stdin connected to a terminal."
 476            action=again
 477            while test "$action" = again
 478            do
 479                echo "Commit Body is:"
 480                echo "--------------------------"
 481                cat "$dotest/final-commit"
 482                echo "--------------------------"
 483                printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 484                read reply
 485                case "$reply" in
 486                [yY]*) action=yes ;;
 487                [aA]*) action=yes interactive= ;;
 488                [nN]*) action=skip ;;
 489                [eE]*) git_editor "$dotest/final-commit"
 490                       action=again ;;
 491                [vV]*) action=again
 492                       LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 493                *)     action=again ;;
 494                esac
 495            done
 496        else
 497            action=yes
 498        fi
 499        FIRSTLINE=$(sed 1q "$dotest/final-commit")
 500
 501        if test $action = skip
 502        then
 503                go_next
 504                continue
 505        fi
 506
 507        if test -x "$GIT_DIR"/hooks/applypatch-msg
 508        then
 509                "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 510                stop_here $this
 511        fi
 512
 513        say "Applying: $FIRSTLINE"
 514
 515        case "$resolved" in
 516        '')
 517                # When we are allowed to fall back to 3-way later, don't give
 518                # false errors during the initial attempt.
 519                squelch=
 520                if test "$threeway" = t
 521                then
 522                        squelch='>/dev/null 2>&1 '
 523                fi
 524                eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
 525                apply_status=$?
 526                ;;
 527        t)
 528                # Resolved means the user did all the hard work, and
 529                # we do not have to do any patch application.  Just
 530                # trust what the user has in the index file and the
 531                # working tree.
 532                resolved=
 533                git diff-index --quiet --cached HEAD -- && {
 534                        echo "No changes - did you forget to use 'git add'?"
 535                        stop_here_user_resolve $this
 536                }
 537                unmerged=$(git ls-files -u)
 538                if test -n "$unmerged"
 539                then
 540                        echo "You still have unmerged paths in your index"
 541                        echo "did you forget to use 'git add'?"
 542                        stop_here_user_resolve $this
 543                fi
 544                apply_status=0
 545                git rerere
 546                ;;
 547        esac
 548
 549        if test $apply_status = 1 && test "$threeway" = t
 550        then
 551                if (fall_back_3way)
 552                then
 553                    # Applying the patch to an earlier tree and merging the
 554                    # result may have produced the same tree as ours.
 555                    git diff-index --quiet --cached HEAD -- && {
 556                        say No changes -- Patch already applied.
 557                        go_next
 558                        continue
 559                    }
 560                    # clear apply_status -- we have successfully merged.
 561                    apply_status=0
 562                fi
 563        fi
 564        if test $apply_status != 0
 565        then
 566                printf 'Patch failed at %s %s\n' "$msgnum" "$FIRSTLINE"
 567                stop_here_user_resolve $this
 568        fi
 569
 570        if test -x "$GIT_DIR"/hooks/pre-applypatch
 571        then
 572                "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 573        fi
 574
 575        tree=$(git write-tree) &&
 576        commit=$(
 577                if test -n "$ignore_date"
 578                then
 579                        GIT_AUTHOR_DATE=
 580                fi
 581                parent=$(git rev-parse --verify -q HEAD) ||
 582                say >&2 "applying to an empty history"
 583
 584                if test -n "$committer_date_is_author_date"
 585                then
 586                        GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
 587                        export GIT_COMMITTER_DATE
 588                fi &&
 589                git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
 590        ) &&
 591        git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 592        stop_here $this
 593
 594        if test -x "$GIT_DIR"/hooks/post-applypatch
 595        then
 596                "$GIT_DIR"/hooks/post-applypatch
 597        fi
 598
 599        go_next
 600done
 601
 602git gc --auto
 603
 604rm -fr "$dotest"