#' Logging
#'
#' @param message Character, containing log message
#' @param level Character, indication log level. Options are "ERROR", "WARNING", "INFO".
#' @param tag Character. A log tag.
#'
#' @author Sandro Groth
#'
#' @keywords logging
#' @noRd
msg <- function(message, level="INFO", tag="") {
if (level == "ERROR") {
stop(paste0(tag, " ", message), call. = FALSE, immediate. = TRUE)
quit("no")
}
if (level == "WARNING") {
warning(paste0(tag, " ", message))
}
if (level == "INFO") {
message(paste0(tag, " ", message))
}
}
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