Nothing
cl <- function(l) Filter(Negate(is.null), l)
assert <- function(x, y) {
if (!is.null(x)) {
if (!inherits(x, y)) {
stop(deparse(substitute(x)), " must be of class ",
paste0(y, collapse = ", "), call. = FALSE)
}
}
}
file_type <- function(x) {
if (grepl("\\.pdf$", x)) return("pdf")
if (grepl("\\.xml$", x)) return("xml")
return(last(strsplit(x, "\\.")[[1]]))
}
last <- function(x) x[length(x)]
err_chk <- function(z) {
if (z$status != 0) {
err <- rawToChar(z$stderr)
err <- gsub("Error: ", "", err)
# language replacement
err <- gsub("-l detect", "language=\"detect\"", err)
stop(err, call. = FALSE)
}
}
readcsv <- function(x) {
df <- readr::read_csv(x)
stats::setNames(df, tolower(names(df)))
}
strextract <- function(str, pattern) regmatches(str, gregexpr(pattern, str))
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