Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2#
   3#
   4. git-sh-setup
   5
   6usage () {
   7    echo >&2 "usage: $0 [--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way] <mbox>"
   8    echo >&2 "  or, when resuming"
   9    echo >&2 "  $0 [--skip | --resolved]"
  10    exit 1;
  11}
  12
  13stop_here () {
  14    echo "$1" >"$dotest/next"
  15    exit 1
  16}
  17
  18go_next () {
  19        rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  20                "$dotest/patch" "$dotest/info"
  21        echo "$next" >"$dotest/next"
  22        this=$next
  23}
  24
  25fall_back_3way () {
  26    O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  27
  28    rm -fr "$dotest"/patch-merge-*
  29    mkdir "$dotest/patch-merge-tmp-dir"
  30
  31    # First see if the patch records the index info that we can use.
  32    if git-apply -z --index-info "$dotest/patch" \
  33        >"$dotest/patch-merge-index-info" 2>/dev/null &&
  34        GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  35        git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
  36        GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  37        git-write-tree >"$dotest/patch-merge-base+" &&
  38        # index has the base tree now.
  39        (
  40            cd "$dotest/patch-merge-tmp-dir" &&
  41            GIT_INDEX_FILE="../patch-merge-tmp-index" \
  42            GIT_OBJECT_DIRECTORY="$O_OBJECT" \
  43            git-apply $binary --index <../patch
  44        )
  45    then
  46        echo Using index info to reconstruct a base tree...
  47        mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
  48        mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
  49    else
  50        # Otherwise, try nearby trees that can be used to apply the
  51        # patch.
  52        (
  53            N=10
  54
  55            # Hoping the patch is against our recent commits...
  56            git-rev-list --max-count=$N HEAD
  57
  58            # or hoping the patch is against known tags...
  59            git-ls-remote --tags .
  60        ) |
  61        while read base junk
  62        do
  63            # See if we have it as a tree...
  64            git-cat-file tree "$base" >/dev/null 2>&1 || continue
  65
  66            rm -fr "$dotest"/patch-merge-* &&
  67            mkdir "$dotest/patch-merge-tmp-dir" || break
  68            (
  69                cd "$dotest/patch-merge-tmp-dir" &&
  70                GIT_INDEX_FILE=../patch-merge-tmp-index &&
  71                GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
  72                export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
  73                git-read-tree "$base" &&
  74                git-apply $binary --index &&
  75                mv ../patch-merge-tmp-index ../patch-merge-index &&
  76                echo "$base" >../patch-merge-base
  77            ) <"$dotest/patch"  2>/dev/null && break
  78        done
  79    fi
  80
  81    test -f "$dotest/patch-merge-index" &&
  82    his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
  83    orig_tree=$(cat "$dotest/patch-merge-base") &&
  84    rm -fr "$dotest"/patch-merge-* || exit 1
  85
  86    echo Falling back to patching base and 3-way merge...
  87
  88    # This is not so wrong.  Depending on which base we picked,
  89    # orig_tree may be wildly different from ours, but his_tree
  90    # has the same set of wildly different changes in parts the
  91    # patch did not touch, so resolve ends up cancelling them,
  92    # saying that we reverted all those changes.
  93
  94    git-merge-resolve $orig_tree -- HEAD $his_tree || {
  95            echo Failed to merge in the changes.
  96            exit 1
  97    }
  98}
  99
 100prec=4
 101dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary=
 102
 103while case "$#" in 0) break;; esac
 104do
 105        case "$1" in
 106        -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
 107        dotest=`expr "$1" : '-[^=]*=\(.*\)'`; shift ;;
 108        -d|--d|--do|--dot|--dote|--dotes|--dotest)
 109        case "$#" in 1) usage ;; esac; shift
 110        dotest="$1"; shift;;
 111
 112        -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
 113        --interacti|--interactiv|--interactive)
 114        interactive=t; shift ;;
 115
 116        -b|--b|--bi|--bin|--bina|--binar|--binary)
 117        binary=t; shift ;;
 118
 119        -3|--3|--3w|--3wa|--3way)
 120        threeway=t; shift ;;
 121        -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
 122        sign=t; shift ;;
 123        -u|--u|--ut|--utf|--utf8)
 124        utf8=t; shift ;;
 125        -k|--k|--ke|--kee|--keep)
 126        keep=t; shift ;;
 127
 128        -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
 129        resolved=t; shift ;;
 130
 131        --sk|--ski|--skip)
 132        skip=t; shift ;;
 133
 134        --)
 135        shift; break ;;
 136        -*)
 137        usage ;;
 138        *)
 139        break ;;
 140        esac
 141done
 142
 143# If the dotest directory exists, but we have finished applying all the
 144# patches in them, clear it out.
 145if test -d "$dotest" &&
 146   last=$(cat "$dotest/last") &&
 147   next=$(cat "$dotest/next") &&
 148   test $# != 0 &&
 149   test "$next" -gt "$last"
 150then
 151   rm -fr "$dotest"
 152fi
 153
 154if test -d "$dotest"
 155then
 156        test ",$#," = ",0," ||
 157        die "previous dotest directory $dotest still exists but mbox given."
 158        resume=yes
 159else
 160        # Make sure we are not given --skip nor --resolved
 161        test ",$skip,$resolved," = ,,, ||
 162                die "we are not resuming."
 163
 164        # Start afresh.
 165        mkdir -p "$dotest" || exit
 166
 167        # cat does the right thing for us, including '-' to mean
 168        # standard input.
 169        cat "$@" |
 170        git-mailsplit -d$prec "$dotest/" >"$dotest/last" || {
 171                rm -fr "$dotest"
 172                exit 1
 173        }
 174
 175        # -b, -s, -u and -k flags are kept for the resuming session after
 176        # a patch failure.
 177        # -3 and -i can and must be given when resuming.
 178        echo "$binary" >"$dotest/binary"
 179        echo "$sign" >"$dotest/sign"
 180        echo "$utf8" >"$dotest/utf8"
 181        echo "$keep" >"$dotest/keep"
 182        echo 1 >"$dotest/next"
 183fi
 184
 185case "$resolved" in
 186'')
 187        files=$(git-diff-index --cached --name-only HEAD) || exit
 188        if [ "$files" ]; then
 189           echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 190           exit 1
 191        fi
 192esac
 193
 194if test "$(cat "$dotest/binary")" = t
 195then
 196        binary=--allow-binary-replacement
 197fi
 198if test "$(cat "$dotest/utf8")" = t
 199then
 200        utf8=-u
 201fi
 202if test "$(cat "$dotest/keep")" = t
 203then
 204        keep=-k
 205fi
 206if test "$(cat "$dotest/sign")" = t
 207then
 208        SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 209                        s/>.*/>/
 210                        s/^/Signed-off-by: /'
 211                `
 212else
 213        SIGNOFF=
 214fi
 215
 216last=`cat "$dotest/last"`
 217this=`cat "$dotest/next"`
 218if test "$skip" = t
 219then
 220        this=`expr "$this" + 1`
 221fi
 222
 223if test "$this" -gt "$last"
 224then
 225        echo Nothing to do.
 226        rm -fr "$dotest"
 227        exit
 228fi
 229
 230while test "$this" -le "$last"
 231do
 232        msgnum=`printf "%0${prec}d" $this`
 233        next=`expr "$this" + 1`
 234        test -f "$dotest/$msgnum" || {
 235                go_next
 236                continue
 237        }
 238
 239        # If we are not resuming, parse and extract the patch information
 240        # into separate files:
 241        #  - info records the authorship and title
 242        #  - msg is the rest of commit log message
 243        #  - patch is the patch body.
 244        #
 245        # When we are resuming, these files are either already prepared
 246        # by the user, or the user can tell us to do so by --resolved flag.
 247        case "$resume" in
 248        '')
 249                git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 250                        <"$dotest/$msgnum" >"$dotest/info" ||
 251                        stop_here $this
 252                git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 253                ;;
 254        esac
 255
 256        GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 257        GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 258        GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 259        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 260
 261        SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 262        case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 263
 264        case "$resume" in
 265        '')
 266            if test '' != "$SIGNOFF"
 267            then
 268                LAST_SIGNED_OFF_BY=`
 269                    sed -ne '/^Signed-off-by: /p' \
 270                    "$dotest/msg-clean" |
 271                    tail -n 1
 272                `
 273                ADD_SIGNOFF=`
 274                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 275                    test '' = "$LAST_SIGNED_OFF_BY" && echo
 276                    echo "$SIGNOFF"
 277                }`
 278            else
 279                ADD_SIGNOFF=
 280            fi
 281            {
 282                echo "$SUBJECT"
 283                if test -s "$dotest/msg-clean"
 284                then
 285                        echo
 286                        cat "$dotest/msg-clean"
 287                fi
 288                if test '' != "$ADD_SIGNOFF"
 289                then
 290                        echo "$ADD_SIGNOFF"
 291                fi
 292            } >"$dotest/final-commit"
 293            ;;
 294        *)
 295                case "$resolved,$interactive" in
 296                tt)
 297                        # This is used only for interactive view option.
 298                        git-diff-index -p --cached HEAD >"$dotest/patch"
 299                        ;;
 300                esac
 301        esac
 302
 303        resume=
 304        if test "$interactive" = t
 305        then
 306            test -t 0 ||
 307            die "cannot be interactive without stdin connected to a terminal."
 308            action=again
 309            while test "$action" = again
 310            do
 311                echo "Commit Body is:"
 312                echo "--------------------------"
 313                cat "$dotest/final-commit"
 314                echo "--------------------------"
 315                printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 316                read reply
 317                case "$reply" in
 318                [yY]*) action=yes ;;
 319                [aA]*) action=yes interactive= ;;
 320                [nN]*) action=skip ;;
 321                [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 322                       action=again ;;
 323                [vV]*) action=again
 324                       LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 325                *)     action=again ;;
 326                esac
 327            done
 328        else
 329            action=yes
 330        fi
 331
 332        if test $action = skip
 333        then
 334                go_next
 335                continue
 336        fi
 337
 338        if test -x "$GIT_DIR"/hooks/applypatch-msg
 339        then
 340                "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 341                stop_here $this
 342        fi
 343
 344        echo
 345        echo "Applying '$SUBJECT'"
 346        echo
 347
 348        case "$resolved" in
 349        '')
 350                git-apply $binary --index "$dotest/patch"
 351                apply_status=$?
 352                ;;
 353        t)
 354                # Resolved means the user did all the hard work, and
 355                # we do not have to do any patch application.  Just
 356                # trust what the user has in the index file and the
 357                # working tree.
 358                resolved=
 359                apply_status=0
 360                ;;
 361        esac
 362
 363        if test $apply_status = 1 && test "$threeway" = t
 364        then
 365                if (fall_back_3way)
 366                then
 367                    # Applying the patch to an earlier tree and merging the
 368                    # result may have produced the same tree as ours.
 369                    changed="$(git-diff-index --cached --name-only -z HEAD)"
 370                    if test '' = "$changed"
 371                    then
 372                            echo No changes -- Patch already applied.
 373                            go_next
 374                            continue
 375                    fi
 376                    # clear apply_status -- we have successfully merged.
 377                    apply_status=0
 378                fi
 379        fi
 380        if test $apply_status != 0
 381        then
 382                echo Patch failed at $msgnum.
 383                stop_here $this
 384        fi
 385
 386        if test -x "$GIT_DIR"/hooks/pre-applypatch
 387        then
 388                "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 389        fi
 390
 391        tree=$(git-write-tree) &&
 392        echo Wrote tree $tree &&
 393        parent=$(git-rev-parse --verify HEAD) &&
 394        commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
 395        echo Committed: $commit &&
 396        git-update-ref HEAD $commit $parent ||
 397        stop_here $this
 398
 399        if test -x "$GIT_DIR"/hooks/post-applypatch
 400        then
 401                "$GIT_DIR"/hooks/post-applypatch
 402        fi
 403
 404        go_next
 405done
 406
 407rm -fr "$dotest"