resample-commonfunctions

# common functions shared by upsample scripts
# this shell script is sourced by upsample

die() {
    echo "$@" >&2
    exit 1
}


boolean_is_true() {
    case $1 in
       # match all cases of true|y|yes
       [Tt][Rr][Uu][Ee]|[Yy]|[Yy][Ee][Ss]) return 0 ;;
       *) return 1 ;;
    esac
}


check_sanity() {

    test -x "$(which $SSRC)" || die "Error: command 'ssrc_hp' not found"
    test -x "$(which flac)" || die "Error: command 'flac' not found"
    test -x "$(which metaflac)" || die "Error: command 'metaflac' not found"
    test -x "$(which soxi)" || die "Error: command 'soxi' not found"

    if [ ! -n "$DIR" ] ; then
	DIR="$(pwd)"
    fi

}