Tools to Work with the 'Splash' JavaScript Rendering Service in R
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5 years ago
trunc_string <- function (x, maxlen = 20, justify = "left") {
toolong <- nzchar(x) > maxlen
maxwidth <- ifelse(toolong, maxlen - 3, maxlen)
chopx <- substr(x, 1, maxwidth)
lenx <- length(x)
for (i in 1:length(x)) if (toolong[i]) chopx[i] <- paste(chopx[i], "...", sep = "")
return(formatC(chopx, width = maxlen, flag = ifelse(justify == "left", "-", " ")))
}
parse_query <- function(query) {
params <- vapply(stri_split_regex(query, "&", omit_empty=TRUE)[[1]],
stri_split_fixed, "=", 2, simplify=TRUE,
FUN.VALUE=character(2))
purrr::set_names(as.list(curl::curl_unescape(params[2,])),
curl::curl_unescape(params[1,]))
}
check_wait <- function(wait) {
if (wait<0) {
message("The 'wait' parameter cannot be less than 0; auto-changing it to 0")
wait <- 0
} else if (wait>10) {
5 years ago
message("The 'wait' parameter cannot be greater than 10 in render_ calls; auto-changing it to 10")
message("Use the direct lua interface or lua DSL wrapper functions to set higher 'wait' values.")
wait <- 10
}
wait
}