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#! /bin/bash

# Global library file.  Methods prefixed by '__dtf_' are internal, for example
# __dtf_is_testdir.  Other methods prefixed by 'dtf_' are API.

: ${SHELL=/bin/bash}


__dtf_is_testdir ()
{
    test -d "$1" || return 1
    case "$1" in
      DTF_OUTPUT|DTF_RESULT|library)
        return 1
        ;;
    esac
    :
}


__dtf_run_testcase ()
{
    resultdir="$outputdir/$testname"
    $__DTF_TOP_TEST && resultdir="$outputdir"

    stdout="$resultdir/stdout"
    stderr="$resultdir/stderr"

    mkdir -p "$resultdir" && cd "$resultdir"

    set dummy \
        __DTF_TOP_TEST=false \
        outputdir="$outputdir" \
        "$@"
    shift

    if $__DTF_TOP_TEST; then
        eval "$@" 4>&2 3>&1 \
            2>> "$stderr" \
            1>> "$stdout"
    else
        # TODO: avoid bashishm
        eval "$@" \
            2> >(tee -a "$stderr" >&2) \
            1> >(tee -a "$stdout")
    fi

    case $? in
      0|77)
        return 0
        ;;
      *)
        __dtf_rc=1
        return 1
        ;;
    esac
}


__dtf_control_msg ()
{
    echo >&4 "$*"
}


__dtf_nl_control_msg ()
{
    __dtf_control_msg "
 ** $* **
"
}


__dtf_top_control_msg ()
{
    $__DTF_TOP_TEST && return
    __dtf_nl_control_msg "$*"
}


__dtf_toplevel_result_msg ()
{
    $__DTF_TOP_TEST || return

    case $1 in
      0)
        __dtf_nl_control_msg "Success."
        ;;
      *)
        __dtf_nl_control_msg "Fail."
        ;;
    esac
}