p2000: add sparse-index repos

[git] / git-bisect.sh

#!/bin/sh

USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
LONG_USAGE='git bisect help
        print this long help message.
git bisect start [--term-{new,bad}=<term> --term-{old,good}=<term>]
                 [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<pathspec>...]
        reset bisect state and start bisection.
git bisect (bad|new) [<rev>]
        mark <rev> a known-bad revision/
                a revision after change in a given property.
git bisect (good|old) [<rev>...]
        mark <rev>... known-good revisions/
                revisions before change in a given property.
git bisect terms [--term-good | --term-bad]
        show the terms used for old and new commits (default: bad, good)
git bisect skip [(<rev>|<range>)...]
        mark <rev>... untestable revisions.
git bisect next
        find next bisection to test and check it out.
git bisect reset [<commit>]
        finish bisection search and go back to commit.
git bisect (visualize|view)
        show bisect status in gitk.
git bisect replay <logfile>
        replay bisection log.
git bisect log
        show bisect log.
git bisect run <cmd>...
        use <cmd>... to automatically bisect.

Please use "git help bisect" to get the full man page.'

OPTIONS_SPEC=
. git-sh-setup

_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
TERM_BAD=bad
TERM_GOOD=good

bisect_visualize() {
        git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit

        if test $# = 0
        then
                if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
                        type gitk >/dev/null 2>&1
                then
                        set gitk
                else
                        set git log
                fi
        else
                case "$1" in
                git*|tig) ;;
                -*)     set git log "$@" ;;
                *)      set git "$@" ;;
                esac
        fi

        eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
}

bisect_run () {
        git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit

        test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"

        while true
        do
                command="$@"
                eval_gettextln "running \$command"
                "$@"
                res=$?

                # Check for really bad run error.
                if [ $res -lt 0 -o $res -ge 128 ]
                then
                        eval_gettextln "bisect run failed:
exit code \$res from '\$command' is < 0 or >= 128" >&2
                        exit $res
                fi

                # Find current state depending on run success or failure.
                # A special exit code of 125 means cannot test.
                if [ $res -eq 125 ]
                then
                        state='skip'
                elif [ $res -gt 0 ]
                then
                        state="$TERM_BAD"
                else
                        state="$TERM_GOOD"
                fi

                git bisect--helper --bisect-state $state >"$GIT_DIR/BISECT_RUN"
                res=$?

                cat "$GIT_DIR/BISECT_RUN"

                if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
                        >/dev/null
                then
                        gettextln "bisect run cannot continue any more" >&2
                        exit $res
                fi

                if [ $res -ne 0 ]
                then
                        eval_gettextln "bisect run failed:
'bisect-state \$state' exited with error code \$res" >&2
                        exit $res
                fi

                if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
                then
                        gettextln "bisect run success"
                        exit 0;
                fi

        done
}

get_terms () {
        if test -s "$GIT_DIR/BISECT_TERMS"
        then
                {
                read TERM_BAD
                read TERM_GOOD
                } <"$GIT_DIR/BISECT_TERMS"
        fi
}

case "$#" in
0)
        usage ;;
*)
        cmd="$1"
        get_terms
        shift
        case "$cmd" in
        help)
                git bisect -h ;;
        start)
                git bisect--helper --bisect-start "$@" ;;
        bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
                git bisect--helper --bisect-state "$cmd" "$@" ;;
        skip)
                git bisect--helper --bisect-skip "$@" || exit;;
        next)
                # Not sure we want "next" at the UI level anymore.
                git bisect--helper --bisect-next "$@" || exit ;;
        visualize|view)
                bisect_visualize "$@" ;;
        reset)
                git bisect--helper --bisect-reset "$@" ;;
        replay)
                git bisect--helper --bisect-replay "$@" || exit;;
        log)
                git bisect--helper --bisect-log || exit ;;
        run)
                bisect_run "$@" ;;
        terms)
                git bisect--helper --bisect-terms "$@" || exit;;
        *)
                usage ;;
        esac
esac