AMR/R/aa_helper_functions.R

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R
Executable File

# ==================================================================== #
# TITLE #
# Antimicrobial Resistance (AMR) Analysis for R #
# #
# SOURCE #
# https://github.com/msberends/AMR #
# #
# LICENCE #
# (c) 2018-2020 Berends MS, Luz CF et al. #
# Developed at the University of Groningen, the Netherlands, in #
# collaboration with non-profit organisations Certe Medical #
# Diagnostics & Advice, and University Medical Center Groningen. #
# #
# This R package is free software; you can freely use and distribute #
# it for both personal and commercial purposes under the terms of the #
# GNU General Public License version 2.0 (GNU GPL-2), as published by #
# the Free Software Foundation. #
# We created this package for both routine data analysis and academic #
# research and it was publicly released in the hope that it will be #
# useful, but it comes WITHOUT ANY WARRANTY OR LIABILITY. #
# #
# Visit our website for the full manual and a complete tutorial about #
# how to conduct AMR analysis: https://msberends.github.io/AMR/ #
# ==================================================================== #
# faster implementation of left_join than using merge() by poorman - we use match():
pm_left_join <- function(x, y, by = NULL, suffix = c(".x", ".y")) {
if (is.null(by)) {
by <- intersect(names(x), names(y))[1L]
if (is.na(by)) {
stop_("no common column found for pm_left_join()")
}
pm_join_message(by)
} else if (!is.null(names(by))) {
by <- unname(c(names(by), by))
}
if (length(by) == 1) {
by <- rep(by, 2)
}
int_x <- colnames(x) %in% colnames(y) & colnames(x) != by[1]
int_y <- colnames(y) %in% colnames(x) & colnames(y) != by[2]
colnames(x)[int_x] <- paste0(colnames(x)[int_x], suffix[1L])
colnames(y)[int_y] <- paste0(colnames(y)[int_y], suffix[2L])
merged <- cbind(x,
y[match(x[, by[1], drop = TRUE],
y[, by[2], drop = TRUE]),
colnames(y)[!colnames(y) %in% colnames(x) & !colnames(y) == by[2]],
drop = FALSE])
rownames(merged) <- NULL
merged
}
quick_case_when <- function(...) {
vectors <- list(...)
split <- lapply(vectors, function(x) unlist(strsplit(paste(deparse(x), collapse = ""), "~", fixed = TRUE)))
for (i in seq_len(length(vectors))) {
if (eval(parse(text = split[[i]][1]), envir = parent.frame())) {
return(eval(parse(text = split[[i]][2]), envir = parent.frame()))
}
}
return(NA)
}
# No export, no Rd
addin_insert_in <- function() {
import_fn("insertText", "rstudioapi")(" %in% ")
}
# No export, no Rd
addin_insert_like <- function() {
import_fn("insertText", "rstudioapi")(" %like% ")
}
check_dataset_integrity <- function() {
# check if user overwrote our data sets in their global environment
data_in_pkg <- data(package = "AMR", envir = asNamespace("AMR"))$results[, "Item", drop = TRUE]
data_in_globalenv <- ls(envir = globalenv())
overwritten <- data_in_pkg[data_in_pkg %in% data_in_globalenv]
# exception for example_isolates
overwritten <- overwritten[overwritten != "example_isolates"]
stop_if(length(overwritten) > 0,
"the following data set is overwritten by your global environment and prevents the AMR package from working correctly:\n",
paste0("'", overwritten, "'", collapse = ", "),
".\nPlease rename your object before using this function.", call = FALSE)
# check if other packages did not overwrite our data sets
tryCatch({
check_microorganisms <- all(c("mo", "fullname", "kingdom", "phylum",
"class", "order", "family", "genus",
"species", "subspecies", "rank",
"species_id", "source", "ref", "prevalence") %in% colnames(microorganisms),
na.rm = TRUE)
check_antibiotics <- all(c("ab", "atc", "cid", "name", "group",
"atc_group1", "atc_group2", "abbreviations",
"synonyms", "oral_ddd", "oral_units",
"iv_ddd", "iv_units", "loinc") %in% colnames(antibiotics),
na.rm = TRUE)
}, error = function(e) {
# package not yet loaded
require("AMR")
})
invisible(TRUE)
}
search_type_in_df <- function(x, type, info = TRUE) {
# try to find columns based on type
found <- NULL
x <- as.data.frame(x, stringsAsFactors = FALSE)
colnames(x) <- trimws(colnames(x))
# -- mo
if (type == "mo") {
if (any(sapply(x, is.mo))) {
found <- sort(colnames(x)[sapply(x, is.mo)])[1]
} else if ("mo" %in% colnames(x) &
suppressWarnings(
all(x$mo %in% c(NA,
microorganisms$mo,
microorganisms.translation$mo_old)))) {
found <- "mo"
} else if (any(colnames(x) %like% "^(mo|microorganism|organism|bacteria|ba[ck]terie)s?$")) {
found <- sort(colnames(x)[colnames(x) %like% "^(mo|microorganism|organism|bacteria|ba[ck]terie)s?$"])[1]
} else if (any(colnames(x) %like% "^(microorganism|organism|bacteria|ba[ck]terie)")) {
found <- sort(colnames(x)[colnames(x) %like% "^(microorganism|organism|bacteria|ba[ck]terie)"])[1]
} else if (any(colnames(x) %like% "species")) {
found <- sort(colnames(x)[colnames(x) %like% "species"])[1]
}
}
# -- key antibiotics
if (type == "keyantibiotics") {
if (any(colnames(x) %like% "^key.*(ab|antibiotics)")) {
found <- sort(colnames(x)[colnames(x) %like% "^key.*(ab|antibiotics)"])[1]
}
}
# -- date
if (type == "date") {
if (any(colnames(x) %like% "^(specimen date|specimen_date|spec_date)")) {
# WHONET support
found <- sort(colnames(x)[colnames(x) %like% "^(specimen date|specimen_date|spec_date)"])[1]
if (!any(class(pm_pull(x, found)) %in% c("Date", "POSIXct"))) {
stop(font_red(paste0("ERROR: Found column `", font_bold(found), "` to be used as input for `col_", type,
"`, but this column contains no valid dates. Transform its values to valid dates first.")),
call. = FALSE)
}
} else if (any(sapply(x, function(x) inherits(x, c("Date", "POSIXct"))))) {
found <- sort(colnames(x)[sapply(x, function(x) inherits(x, c("Date", "POSIXct")))])[1]
}
}
# -- patient id
if (type == "patient_id") {
if (any(colnames(x) %like% "^(identification |patient|patid)")) {
found <- sort(colnames(x)[colnames(x) %like% "^(identification |patient|patid)"])[1]
}
}
# -- specimen
if (type == "specimen") {
if (any(colnames(x) %like% "(specimen type|spec_type)")) {
found <- sort(colnames(x)[colnames(x) %like% "(specimen type|spec_type)"])[1]
} else if (any(colnames(x) %like% "^(specimen)")) {
found <- sort(colnames(x)[colnames(x) %like% "^(specimen)"])[1]
}
}
# -- UTI (urinary tract infection)
if (type == "uti") {
if (any(colnames(x) == "uti")) {
found <- colnames(x)[colnames(x) == "uti"][1]
} else if (any(colnames(x) %like% "(urine|urinary)")) {
found <- sort(colnames(x)[colnames(x) %like% "(urine|urinary)"])[1]
}
if (!is.null(found)) {
# this column should contain logicals
if (!is.logical(x[, found, drop = TRUE])) {
message(font_red(paste0("NOTE: Column `", font_bold(found), "` found as input for `col_", type,
"`, but this column does not contain 'logical' values (TRUE/FALSE) and was ignored.")))
found <- NULL
}
}
}
if (!is.null(found) & info == TRUE) {
msg <- paste0("NOTE: Using column `", font_bold(found), "` as input for `col_", type, "`.")
if (type %in% c("keyantibiotics", "specimen")) {
msg <- paste(msg, "Use", font_bold(paste0("col_", type), "= FALSE"), "to prevent this.")
}
message(font_blue(msg))
}
found
}
is_possibly_regex <- function(x) {
tryCatch(sapply(strsplit(x, ""),
function(y) any(y %in% c("$", "(", ")", "*", "+", "-", ".", "?", "[", "]", "^", "{", "|", "}", "\\"), na.rm = TRUE)),
error = function(e) rep(TRUE, length(x)))
}
stop_ifnot_installed <- function(package) {
# no "utils::installed.packages()" since it requires non-staged install since R 3.6.0
# https://developer.r-project.org/Blog/public/2019/02/14/staged-install/index.html
sapply(package, function(pkg)
tryCatch(get(".packageName", envir = asNamespace(pkg)),
error = function(e) {
if (package == "rstudioapi") {
stop("This function only works in RStudio.", call. = FALSE)
} else if (pkg != "base") {
stop("This requires the '", pkg, "' package.",
"\nTry to install it with: install.packages(\"", pkg, "\")",
call. = FALSE)
}
}))
return(invisible())
}
import_fn <- function(name, pkg, error_on_fail = TRUE) {
if (isTRUE(error_on_fail)) {
stop_ifnot_installed(pkg)
}
tryCatch(
get(name, envir = asNamespace(pkg)),
error = function(e) {
if (isTRUE(error_on_fail)) {
stop_("function ", name, "() not found in package '", pkg,
"'. Please create an issue at https://github.com/msberends/AMR/issues. Many thanks!",
call = FALSE)
} else {
return(NULL)
}
})
}
stop_ <- function(..., call = TRUE) {
msg <- paste0(c(...), collapse = "")
if (!isFALSE(call)) {
if (isTRUE(call)) {
call <- as.character(sys.call(-1)[1])
} else {
# so you can go back more than 1 call, as used in rsi_calc(), that now throws a reference to e.g. n_rsi()
call <- as.character(sys.call(call)[1])
}
msg <- paste0("in ", call, "(): ", msg)
}
stop(msg, call. = FALSE)
}
stop_if <- function(expr, ..., call = TRUE) {
if (isTRUE(expr)) {
if (isTRUE(call)) {
call <- -1
}
if (!isFALSE(call)) {
# since we're calling stop_(), which is another call
call <- call - 1
}
stop_(..., call = call)
}
}
stop_ifnot <- function(expr, ..., call = TRUE) {
if (isFALSE(expr)) {
if (isTRUE(call)) {
call <- -1
}
if (!isFALSE(call)) {
# since we're calling stop_(), which is another call
call <- call - 1
}
stop_(..., call = call)
}
}
"%or%" <- function(x, y) {
if (is.null(x) | is.null(y)) {
if (is.null(x)) {
return(y)
} else {
return(x)
}
}
ifelse(!is.na(x),
x,
ifelse(!is.na(y), y, NA))
}
class_integrity_check <- function(value, type, check_vector) {
if (!all(value[!is.na(value)] %in% check_vector)) {
warning(paste0("invalid ", type, ", NA generated"), call. = FALSE)
value[!value %in% check_vector] <- NA
}
value
}
# transforms data set to data.frame with only ASCII values, to comply with CRAN policies
dataset_UTF8_to_ASCII <- function(df) {
trans <- function(vect) {
iconv(vect, from = "UTF-8", to = "ASCII//TRANSLIT")
}
df <- as.data.frame(df, stringsAsFactors = FALSE)
for (i in seq_len(NCOL(df))) {
col <- df[, i]
if (is.list(col)) {
col <- lapply(col, function(j) trans(j))
df[, i] <- list(col)
} else {
if (is.factor(col)) {
levels(col) <- trans(levels(col))
} else if (is.character(col)) {
col <- trans(col)
} else {
col
}
df[, i] <- col
}
}
df
}
create_ab_documentation <- function(ab) {
ab_names <- ab_name(ab, language = NULL, tolower = TRUE)
ab <- ab[order(ab_names)]
ab_names <- ab_names[order(ab_names)]
atcs <- ab_atc(ab)
atcs[!is.na(atcs)] <- paste0("[", atcs[!is.na(atcs)], "](", ab_url(ab[!is.na(atcs)]), ")")
atcs[is.na(atcs)] <- "no ATC code"
out <- paste0(ab_names, " (`", ab, "`, ", atcs, ")", collapse = ", ")
substr(out, 1, 1) <- toupper(substr(out, 1, 1))
out
}
# a check for every single argument in all functions
meet_criteria <- function(object,
allow_class = NULL,
has_length = NULL,
looks_like = NULL,
is_in = NULL,
contains_column_class = NULL,
allow_NULL = FALSE,
allow_NA = FALSE,
ignore.case = FALSE,
.call_depth = 0) { # depth in calling
obj_name <- deparse(substitute(object))
call_depth <- -2 - abs(.call_depth)
if (is.null(object)) {
stop_if(allow_NULL == FALSE, "argument `", obj_name, "` must not be NULL", call = call_depth)
return(invisible())
}
if (is.null(dim(object)) && length(object) == 1 && is.na(object)) {
stop_if(allow_NA == FALSE, "argument `", obj_name, "` must not be NA", call = call_depth)
return(invisible())
}
vector_or <- function(v, quotes) {
if (length(v) == 1) {
return(paste0(ifelse(quotes, '"', ""), v, ifelse(quotes, '"', "")))
}
# all commas except for last item, so will become '"val1", "val2", "val3" or "val4"'
paste0(paste0(ifelse(quotes, '"', ""), v[seq_len(length(v) - 1)], ifelse(quotes, '"', ""), collapse = ", "),
" or ", paste0(ifelse(quotes, '"', ""), v[length(v)], ifelse(quotes, '"', "")))
}
if (!is.null(allow_class)) {
stop_ifnot(inherits(object, allow_class), "argument `", obj_name,
"` must ", # ifelse(allow_NULL, "be NULL or must ", ""),
"be of class ", vector_or(allow_class, quotes = TRUE),
", not \"", paste(class(object), collapse = "/"), "\"",
call = call_depth)
# check data.frames for data
if (inherits(object, "data.frame")) {
stop_if(any(dim(object) == 0),
"the data provided in argument `", obj_name,
"` must contain rows and columns (current dimensions: ",
paste(dim(object), collapse = " x "), ")",
call = call_depth)
}
}
if (!is.null(has_length)) {
stop_ifnot(length(object) %in% has_length, "argument `", obj_name,
"` must ", # ifelse(allow_NULL, "be NULL or must ", ""),
"be of length ", vector_or(has_length, quotes = FALSE),
", not ", length(object),
call = call_depth)
}
if (!is.null(looks_like)) {
stop_ifnot(object %like% looks_like, "argument `", obj_name,
"` must ", # ifelse(allow_NULL, "be NULL or must ", ""),
"resemble the regular expression \"", looks_like, "\"",
call = call_depth)
}
if (!is.null(is_in)) {
if (ignore.case == TRUE) {
object <- tolower(object)
is_in <- tolower(is_in)
}
stop_ifnot(all(object %in% is_in, na.rm = TRUE), "argument `", obj_name,
"` must be ",
ifelse(!is.null(has_length) && length(has_length) == 1 && has_length == 1, "one of: ", ""),
vector_or(is_in, quotes = TRUE),
", not ", paste0("\"", object, "\"", collapse = "/"), "",
call = call_depth)
}
if (!is.null(contains_column_class)) {
stop_ifnot(any(sapply(object, function(col, columns_class = contains_column_class) inherits(col, columns_class)), na.rm = TRUE),
"the data provided in argument `", obj_name,
"` must contain at least one column of class <", contains_column_class, ">. ",
"See ?as.", contains_column_class, ".",
call = call_depth)
}
return(invisible())
}
has_colour <- function() {
# this is a base R version of crayon::has_color
enabled <- getOption("crayon.enabled")
if (!is.null(enabled)) {
return(isTRUE(enabled))
}
rstudio_with_ansi_support <- function(x) {
if (Sys.getenv("RSTUDIO", "") == "") {
return(FALSE)
}
if ((cols <- Sys.getenv("RSTUDIO_CONSOLE_COLOR", "")) != "" && !is.na(as.numeric(cols))) {
return(TRUE)
}
tryCatch(get("isAvailable", envir = asNamespace("rstudioapi"))(), error = function(e) return(FALSE)) &&
tryCatch(get("hasFun", envir = asNamespace("rstudioapi"))("getConsoleHasColor"), error = function(e) return(FALSE))
}
if (rstudio_with_ansi_support() && sink.number() == 0) {
return(TRUE)
}
if (!isatty(stdout())) {
return(FALSE)
}
if (tolower(Sys.info()["sysname"]) == "windows") {
if (Sys.getenv("ConEmuANSI") == "ON") {
return(TRUE)
}
if (Sys.getenv("CMDER_ROOT") != "") {
return(TRUE)
}
return(FALSE)
}
emacs_version <- function() {
ver <- Sys.getenv("INSIDE_EMACS")
if (ver == "") {
return(NA_integer_)
}
ver <- gsub("'", "", ver)
ver <- strsplit(ver, ",", fixed = TRUE)[[1]]
ver <- strsplit(ver, ".", fixed = TRUE)[[1]]
as.numeric(ver)
}
if ((Sys.getenv("EMACS") != "" || Sys.getenv("INSIDE_EMACS") != "") &&
!is.na(emacs_version()[1]) && emacs_version()[1] >= 23) {
return(TRUE)
}
if ("COLORTERM" %in% names(Sys.getenv())) {
return(TRUE)
}
if (Sys.getenv("TERM") == "dumb") {
return(FALSE)
}
grepl(pattern = "^screen|^xterm|^vt100|color|ansi|cygwin|linux",
x = Sys.getenv("TERM"),
ignore.case = TRUE,
perl = TRUE)
}
# the crayon colours
try_colour <- function(..., before, after, collapse = " ") {
txt <- paste0(unlist(list(...)), collapse = collapse)
if (isTRUE(has_colour())) {
if (is.null(collapse)) {
paste0(before, txt, after, collapse = NULL)
} else {
paste0(before, txt, after, collapse = "")
}
} else {
txt
}
}
font_black <- function(..., collapse = " ") {
try_colour(..., before = "\033[38;5;232m", after = "\033[39m", collapse = collapse)
}
font_blue <- function(..., collapse = " ") {
try_colour(..., before = "\033[34m", after = "\033[39m", collapse = collapse)
}
font_green <- function(..., collapse = " ") {
try_colour(..., before = "\033[32m", after = "\033[39m", collapse = collapse)
}
font_magenta <- function(..., collapse = " ") {
try_colour(..., before = "\033[35m", after = "\033[39m", collapse = collapse)
}
font_red <- function(..., collapse = " ") {
try_colour(..., before = "\033[31m", after = "\033[39m", collapse = collapse)
}
font_silver <- function(..., collapse = " ") {
try_colour(..., before = "\033[90m", after = "\033[39m", collapse = collapse)
}
font_white <- function(..., collapse = " ") {
try_colour(..., before = "\033[37m", after = "\033[39m", collapse = collapse)
}
font_yellow <- function(..., collapse = " ") {
try_colour(..., before = "\033[33m", after = "\033[39m", collapse = collapse)
}
font_subtle <- function(..., collapse = " ") {
try_colour(..., before = "\033[38;5;246m", after = "\033[39m", collapse = collapse)
}
font_grey <- function(..., collapse = " ") {
try_colour(..., before = "\033[38;5;249m", after = "\033[39m", collapse = collapse)
}
font_green_bg <- function(..., collapse = " ") {
try_colour(..., before = "\033[42m", after = "\033[49m", collapse = collapse)
}
font_red_bg <- function(..., collapse = " ") {
try_colour(..., before = "\033[41m", after = "\033[49m", collapse = collapse)
}
font_yellow_bg <- function(..., collapse = " ") {
try_colour(..., before = "\033[43m", after = "\033[49m", collapse = collapse)
}
font_na <- function(..., collapse = " ") {
font_red(..., collapse = collapse)
}
font_bold <- function(..., collapse = " ") {
try_colour(..., before = "\033[1m", after = "\033[22m", collapse = collapse)
}
font_italic <- function(..., collapse = " ") {
try_colour(..., before = "\033[3m", after = "\033[23m", collapse = collapse)
}
font_underline <- function(..., collapse = " ") {
try_colour(..., before = "\033[4m", after = "\033[24m", collapse = collapse)
}
font_stripstyle <- function(x) {
# from crayon:::ansi_regex
gsub("(?:(?:\\x{001b}\\[)|\\x{009b})(?:(?:[0-9]{1,3})?(?:(?:;[0-9]{0,3})*)?[A-M|f-m])|\\x{001b}[A-M]", "", x, perl = TRUE)
}
progress_ticker <- function(n = 1, n_min = 0, ...) {
if (!interactive() || n < n_min) {
pb <- list()
pb$tick <- function() {
invisible()
}
pb$kill <- function() {
invisible()
}
structure(pb, class = "txtProgressBar")
} else if (n >= n_min) {
pb <- utils::txtProgressBar(max = n, style = 3)
pb$tick <- function() {
pb$up(pb$getVal() + 1)
}
pb
}
}
create_pillar_column <- function(x, ...) {
new_pillar_shaft_simple <- import_fn("new_pillar_shaft_simple", "pillar", error_on_fail = FALSE)
if (!is.null(new_pillar_shaft_simple)) {
new_pillar_shaft_simple(x, ...)
} else {
# does not exist in package 'pillar' anymore
structure(list(x),
class = "pillar_shaft_simple",
...)
}
}
# copied from vctrs::s3_register by their permission:
# https://github.com/r-lib/vctrs/blob/05968ce8e669f73213e3e894b5f4424af4f46316/R/register-s3.R
s3_register <- function(generic, class, method = NULL) {
stopifnot(is.character(generic), length(generic) == 1)
stopifnot(is.character(class), length(class) == 1)
pieces <- strsplit(generic, "::")[[1]]
stopifnot(length(pieces) == 2)
package <- pieces[[1]]
generic <- pieces[[2]]
caller <- parent.frame()
get_method_env <- function() {
top <- topenv(caller)
if (isNamespace(top)) {
asNamespace(environmentName(top))
}
else {
caller
}
}
get_method <- function(method, env) {
if (is.null(method)) {
get(paste0(generic, ".", class), envir = get_method_env())
}
else {
method
}
}
method_fn <- get_method(method)
stopifnot(is.function(method_fn))
setHook(packageEvent(package, "onLoad"), function(...) {
ns <- asNamespace(package)
method_fn <- get_method(method)
registerS3method(generic, class, method_fn, envir = ns)
})
if (!isNamespaceLoaded(package)) {
return(invisible())
}
envir <- asNamespace(package)
if (exists(generic, envir)) {
registerS3method(generic, class, method_fn, envir = envir)
}
invisible()
}
# works exactly like round(), but rounds `round2(44.55, 1)` to 44.6 instead of 44.5
# and adds decimal zeroes until `digits` is reached when force_zero = TRUE
round2 <- function(x, digits = 0, force_zero = TRUE) {
x <- as.double(x)
# https://stackoverflow.com/a/12688836/4575331
val <- (trunc((abs(x) * 10 ^ digits) + 0.5) / 10 ^ digits) * sign(x)
if (digits > 0 & force_zero == TRUE) {
values_trans <- val[val != as.integer(val) & !is.na(val)]
val[val != as.integer(val) & !is.na(val)] <- paste0(values_trans,
strrep("0",
max(0,
digits - nchar(
format(
as.double(
gsub(".*[.](.*)$",
"\\1",
values_trans)),
scientific = FALSE)))))
}
as.double(val)
}
# percentage from our other package: 'cleaner'
percentage <- function(x, digits = NULL, ...) {
# getdecimalplaces() function
getdecimalplaces <- function(x, minimum = 0, maximum = 3) {
if (maximum < minimum) {
maximum <- minimum
}
if (minimum > maximum) {
minimum <- maximum
}
max_places <- max(unlist(lapply(strsplit(sub("0+$", "",
as.character(x * 100)), ".", fixed = TRUE),
function(y) ifelse(length(y) == 2, nchar(y[2]), 0))), na.rm = TRUE)
max(min(max_places,
maximum, na.rm = TRUE),
minimum, na.rm = TRUE)
}
# format_percentage() function
format_percentage <- function(x, digits = NULL, ...) {
if (is.null(digits)) {
digits <- getdecimalplaces(x)
}
# round right: percentage(0.4455) and format(as.percentage(0.4455), 1) should return "44.6%", not "44.5%"
x_formatted <- format(round2(as.double(x), digits = digits + 2) * 100,
scientific = FALSE,
digits = digits,
nsmall = digits,
...)
x_formatted <- paste0(x_formatted, "%")
x_formatted[!grepl(pattern = "^[0-9.,e-]+$", x = x)] <- NA_character_
x_formatted
}
# the actual working part
x <- as.double(x)
if (is.null(digits)) {
# max one digit if undefined
digits <- getdecimalplaces(x, minimum = 0, maximum = 1)
}
format_percentage(structure(.Data = as.double(x),
class = c("percentage", "numeric")),
digits = digits, ...)
}
# prevent dependency on package 'backports'
# these functions were not available in previous versions of R (last checked: R 4.0.2)
# see here for the full list: https://github.com/r-lib/backports
strrep <- function(x, times) {
x <- as.character(x)
if (length(x) == 0L)
return(x)
unlist(.mapply(function(x, times) {
if (is.na(x) || is.na(times))
return(NA_character_)
if (times <= 0L)
return("")
paste0(replicate(times, x), collapse = "")
}, list(x = x, times = times), MoreArgs = list()), use.names = FALSE)
}
trimws <- function(x, which = c("both", "left", "right")) {
which <- match.arg(which)
mysub <- function(re, x) sub(re, "", x, perl = TRUE)
if (which == "left")
return(mysub("^[ \t\r\n]+", x))
if (which == "right")
return(mysub("[ \t\r\n]+$", x))
mysub("[ \t\r\n]+$", mysub("^[ \t\r\n]+", x))
}
isFALSE <- function(x) {
is.logical(x) && length(x) == 1L && !is.na(x) && !x
}
deparse1 <- function(expr, collapse = " ", width.cutoff = 500L, ...) {
paste(deparse(expr, width.cutoff, ...), collapse = collapse)
}
file.size <- function(...) {
file.info(...)$size
}
file.mtime <- function(...) {
file.info(...)$mtime
}
str2lang <- function(s) {
stopifnot(length(s) == 1L)
ex <- parse(text = s, keep.source = FALSE)
stopifnot(length(ex) == 1L)
ex[[1L]]
}
isNamespaceLoaded <- function(pkg) {
pkg %in% loadedNamespaces()
}