Andrew's git - gitweb.git/blob

   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
  10git-am [options] --skip
  11--
  12d,dotest=       (removed -- do not use)
  13i,interactive   run interactively
  14b,binary        pass --allo-binary-replacement to git-apply
  153,3way          allow fall back on 3way merging if needed
  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
  19whitespace=     pass it through git-apply
  20C=              pass it through git-apply
  21p=              pass it through git-apply
  22resolvemsg=     override error message when patch failure occurs
  23r,resolved      to be used after a patch failure
  24skip            skip the current patch
  25rebasing        (internal use for git-rebase)"
  26
  27. git-sh-setup
  28prefix=$(git rev-parse --show-prefix)
  29set_reflog_action am
  30require_work_tree
  31cd_to_toplevel
  32
  33git var GIT_COMMITTER_IDENT >/dev/null || exit
  34
  35stop_here () {
  36    echo "$1" >"$dotest/next"
  37    exit 1
  38}
  39
  40stop_here_user_resolve () {
  41    if [ -n "$resolvemsg" ]; then
  42            printf '%s\n' "$resolvemsg"
  43            stop_here $1
  44    fi
  45    cmdline=$(basename $0)
  46    if test '' != "$interactive"
  47    then
  48        cmdline="$cmdline -i"
  49    fi
  50    if test '' != "$threeway"
  51    then
  52        cmdline="$cmdline -3"
  53    fi
  54    echo "When you have resolved this problem run \"$cmdline --resolved\"."
  55    echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
  56
  57    stop_here $1
  58}
  59
  60go_next () {
  61        rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  62                "$dotest/patch" "$dotest/info"
  63        echo "$next" >"$dotest/next"
  64        this=$next
  65}
  66
  67cannot_fallback () {
  68        echo "$1"
  69        echo "Cannot fall back to three-way merge."
  70        exit 1
  71}
  72
  73fall_back_3way () {
  74    O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  75
  76    rm -fr "$dotest"/patch-merge-*
  77    mkdir "$dotest/patch-merge-tmp-dir"
  78
  79    # First see if the patch records the index info that we can use.
  80    git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
  81        "$dotest/patch" &&
  82    GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  83    git write-tree >"$dotest/patch-merge-base+" ||
  84    cannot_fallback "Repository lacks necessary blobs to fall back on 3-way merge."
  85
  86    echo Using index info to reconstruct a base tree...
  87    if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  88        git apply $binary --cached <"$dotest/patch"
  89    then
  90        mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
  91        mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
  92    else
  93        cannot_fallback "Did you hand edit your patch?
  94It does not apply to blobs recorded in its index."
  95    fi
  96
  97    test -f "$dotest/patch-merge-index" &&
  98    his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
  99    orig_tree=$(cat "$dotest/patch-merge-base") &&
 100    rm -fr "$dotest"/patch-merge-* || exit 1
 101
 102    echo Falling back to patching base and 3-way merge...
 103
 104    # This is not so wrong.  Depending on which base we picked,
 105    # orig_tree may be wildly different from ours, but his_tree
 106    # has the same set of wildly different changes in parts the
 107    # patch did not touch, so recursive ends up canceling them,
 108    # saying that we reverted all those changes.
 109
 110    eval GITHEAD_$his_tree='"$SUBJECT"'
 111    export GITHEAD_$his_tree
 112    git-merge-recursive $orig_tree -- HEAD $his_tree || {
 113            git rerere
 114            echo Failed to merge in the changes.
 115            exit 1
 116    }
 117    unset GITHEAD_$his_tree
 118}
 119
 120reread_subject () {
 121        git stripspace <"$1" | sed -e 1q
 122}
 123
 124prec=4
 125dotest=".dotest"
 126sign= utf8=t keep= skip= interactive= resolved= binary= rebasing=
 127resolvemsg= resume=
 128git_apply_opt=
 129
 130while test $# != 0
 131do
 132        case "$1" in
 133        -i|--interactive)
 134                interactive=t ;;
 135        -b|--binary)
 136                binary=t ;;
 137        -3|--3way)
 138                threeway=t ;;
 139        -s|--signoff)
 140                sign=t ;;
 141        -u|--utf8)
 142                utf8=t ;; # this is now default
 143        --no-utf8)
 144                utf8= ;;
 145        -k|--keep)
 146                keep=t ;;
 147        -r|--resolved)
 148                resolved=t ;;
 149        --skip)
 150                skip=t ;;
 151        --rebasing)
 152                rebasing=t threeway=t keep=t binary=t ;;
 153        -d|--dotest)
 154                die "-d option is no longer supported.  Do not use."
 155                ;;
 156        --resolvemsg)
 157                shift; resolvemsg=$1 ;;
 158        --whitespace)
 159                git_apply_opt="$git_apply_opt $1=$2"; shift ;;
 160        -C|-p)
 161                git_apply_opt="$git_apply_opt $1$2"; shift ;;
 162        --)
 163                shift; break ;;
 164        *)
 165                usage ;;
 166        esac
 167        shift
 168done
 169
 170# If the dotest directory exists, but we have finished applying all the
 171# patches in them, clear it out.
 172if test -d "$dotest" &&
 173   last=$(cat "$dotest/last") &&
 174   next=$(cat "$dotest/next") &&
 175   test $# != 0 &&
 176   test "$next" -gt "$last"
 177then
 178   rm -fr "$dotest"
 179fi
 180
 181if test -d "$dotest"
 182then
 183        case "$#,$skip$resolved" in
 184        0,*t*)
 185                # Explicit resume command and we do not have file, so
 186                # we are happy.
 187                : ;;
 188        0,)
 189                # No file input but without resume parameters; catch
 190                # user error to feed us a patch from standard input
 191                # when there is already $dotest.  This is somewhat
 192                # unreliable -- stdin could be /dev/null for example
 193                # and the caller did not intend to feed us a patch but
 194                # wanted to continue unattended.
 195                tty -s
 196                ;;
 197        *)
 198                false
 199                ;;
 200        esac ||
 201        die "previous dotest directory $dotest still exists but mbox given."
 202        resume=yes
 203else
 204        # Make sure we are not given --skip nor --resolved
 205        test ",$skip,$resolved," = ,,, ||
 206                die "Resolve operation not in progress, we are not resuming."
 207
 208        # Start afresh.
 209        mkdir -p "$dotest" || exit
 210
 211        if test -n "$prefix" && test $# != 0
 212        then
 213                first=t
 214                for arg
 215                do
 216                        test -n "$first" && {
 217                                set x
 218                                first=
 219                        }
 220                        case "$arg" in
 221                        /*)
 222                                set "$@" "$arg" ;;
 223                        *)
 224                                set "$@" "$prefix$arg" ;;
 225                        esac
 226                done
 227                shift
 228        fi
 229        git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 230                rm -fr "$dotest"
 231                exit 1
 232        }
 233
 234        # -b, -s, -u, -k and --whitespace flags are kept for the
 235        # resuming session after a patch failure.
 236        # -3 and -i can and must be given when resuming.
 237        echo "$binary" >"$dotest/binary"
 238        echo " $ws" >"$dotest/whitespace"
 239        echo "$sign" >"$dotest/sign"
 240        echo "$utf8" >"$dotest/utf8"
 241        echo "$keep" >"$dotest/keep"
 242        echo 1 >"$dotest/next"
 243        if test -n "$rebasing"
 244        then
 245                : >"$dotest/rebasing"
 246        else
 247                : >"$dotest/applying"
 248        fi
 249fi
 250
 251case "$resolved" in
 252'')
 253        files=$(git diff-index --cached --name-only HEAD --) || exit
 254        if [ "$files" ]; then
 255           echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 256           exit 1
 257        fi
 258esac
 259
 260if test "$(cat "$dotest/binary")" = t
 261then
 262        binary=--allow-binary-replacement
 263fi
 264if test "$(cat "$dotest/utf8")" = t
 265then
 266        utf8=-u
 267else
 268        utf8=-n
 269fi
 270if test "$(cat "$dotest/keep")" = t
 271then
 272        keep=-k
 273fi
 274ws=`cat "$dotest/whitespace"`
 275if test "$(cat "$dotest/sign")" = t
 276then
 277        SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 278                        s/>.*/>/
 279                        s/^/Signed-off-by: /'
 280                `
 281else
 282        SIGNOFF=
 283fi
 284
 285last=`cat "$dotest/last"`
 286this=`cat "$dotest/next"`
 287if test "$skip" = t
 288then
 289        git rerere clear
 290        this=`expr "$this" + 1`
 291        resume=
 292fi
 293
 294if test "$this" -gt "$last"
 295then
 296        echo Nothing to do.
 297        rm -fr "$dotest"
 298        exit
 299fi
 300
 301while test "$this" -le "$last"
 302do
 303        msgnum=`printf "%0${prec}d" $this`
 304        next=`expr "$this" + 1`
 305        test -f "$dotest/$msgnum" || {
 306                resume=
 307                go_next
 308                continue
 309        }
 310
 311        # If we are not resuming, parse and extract the patch information
 312        # into separate files:
 313        #  - info records the authorship and title
 314        #  - msg is the rest of commit log message
 315        #  - patch is the patch body.
 316        #
 317        # When we are resuming, these files are either already prepared
 318        # by the user, or the user can tell us to do so by --resolved flag.
 319        case "$resume" in
 320        '')
 321                git mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 322                        <"$dotest/$msgnum" >"$dotest/info" ||
 323                        stop_here $this
 324
 325                # skip pine's internal folder data
 326                grep '^Author: Mail System Internal Data$' \
 327                        <"$dotest"/info >/dev/null &&
 328                        go_next && continue
 329
 330                test -s $dotest/patch || {
 331                        echo "Patch is empty.  Was it split wrong?"
 332                        stop_here $this
 333                }
 334                git stripspace < "$dotest/msg" > "$dotest/msg-clean"
 335                ;;
 336        esac
 337
 338        GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 339        GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 340        GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 341
 342        if test -z "$GIT_AUTHOR_EMAIL"
 343        then
 344                echo "Patch does not have a valid e-mail address."
 345                stop_here $this
 346        fi
 347
 348        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 349
 350        SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 351        case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 352
 353        case "$resume" in
 354        '')
 355            if test '' != "$SIGNOFF"
 356            then
 357                LAST_SIGNED_OFF_BY=`
 358                    sed -ne '/^Signed-off-by: /p' \
 359                    "$dotest/msg-clean" |
 360                    sed -ne '$p'
 361                `
 362                ADD_SIGNOFF=`
 363                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 364                    test '' = "$LAST_SIGNED_OFF_BY" && echo
 365                    echo "$SIGNOFF"
 366                }`
 367            else
 368                ADD_SIGNOFF=
 369            fi
 370            {
 371                printf '%s\n' "$SUBJECT"
 372                if test -s "$dotest/msg-clean"
 373                then
 374                        echo
 375                        cat "$dotest/msg-clean"
 376                fi
 377                if test '' != "$ADD_SIGNOFF"
 378                then
 379                        echo "$ADD_SIGNOFF"
 380                fi
 381            } >"$dotest/final-commit"
 382            ;;
 383        *)
 384                case "$resolved$interactive" in
 385                tt)
 386                        # This is used only for interactive view option.
 387                        git diff-index -p --cached HEAD -- >"$dotest/patch"
 388                        ;;
 389                esac
 390        esac
 391
 392        resume=
 393        if test "$interactive" = t
 394        then
 395            test -t 0 ||
 396            die "cannot be interactive without stdin connected to a terminal."
 397            action=again
 398            while test "$action" = again
 399            do
 400                echo "Commit Body is:"
 401                echo "--------------------------"
 402                cat "$dotest/final-commit"
 403                echo "--------------------------"
 404                printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 405                read reply
 406                case "$reply" in
 407                [yY]*) action=yes ;;
 408                [aA]*) action=yes interactive= ;;
 409                [nN]*) action=skip ;;
 410                [eE]*) git_editor "$dotest/final-commit"
 411                       SUBJECT=$(reread_subject "$dotest/final-commit")
 412                       action=again ;;
 413                [vV]*) action=again
 414                       LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 415                *)     action=again ;;
 416                esac
 417            done
 418        else
 419            action=yes
 420        fi
 421
 422        if test $action = skip
 423        then
 424                go_next
 425                continue
 426        fi
 427
 428        if test -x "$GIT_DIR"/hooks/applypatch-msg
 429        then
 430                "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 431                stop_here $this
 432        fi
 433
 434        printf 'Applying %s\n' "$SUBJECT"
 435
 436        case "$resolved" in
 437        '')
 438                git apply $git_apply_opt $binary --index "$dotest/patch"
 439                apply_status=$?
 440                ;;
 441        t)
 442                # Resolved means the user did all the hard work, and
 443                # we do not have to do any patch application.  Just
 444                # trust what the user has in the index file and the
 445                # working tree.
 446                resolved=
 447                git diff-index --quiet --cached HEAD -- && {
 448                        echo "No changes - did you forget to use 'git add'?"
 449                        stop_here_user_resolve $this
 450                }
 451                unmerged=$(git ls-files -u)
 452                if test -n "$unmerged"
 453                then
 454                        echo "You still have unmerged paths in your index"
 455                        echo "did you forget to use 'git add'?"
 456                        stop_here_user_resolve $this
 457                fi
 458                apply_status=0
 459                git rerere
 460                ;;
 461        esac
 462
 463        if test $apply_status = 1 && test "$threeway" = t
 464        then
 465                if (fall_back_3way)
 466                then
 467                    # Applying the patch to an earlier tree and merging the
 468                    # result may have produced the same tree as ours.
 469                    git diff-index --quiet --cached HEAD -- && {
 470                        echo No changes -- Patch already applied.
 471                        go_next
 472                        continue
 473                    }
 474                    # clear apply_status -- we have successfully merged.
 475                    apply_status=0
 476                fi
 477        fi
 478        if test $apply_status != 0
 479        then
 480                echo Patch failed at $msgnum.
 481                stop_here_user_resolve $this
 482        fi
 483
 484        if test -x "$GIT_DIR"/hooks/pre-applypatch
 485        then
 486                "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 487        fi
 488
 489        tree=$(git write-tree) &&
 490        parent=$(git rev-parse --verify HEAD) &&
 491        commit=$(git commit-tree $tree -p $parent <"$dotest/final-commit") &&
 492        git update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
 493        stop_here $this
 494
 495        if test -x "$GIT_DIR"/hooks/post-applypatch
 496        then
 497                "$GIT_DIR"/hooks/post-applypatch
 498        fi
 499
 500        go_next
 501done
 502
 503git gc --auto
 504
 505rm -fr "$dotest"