1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
captures <- function(x, m) {
assert("`x` must be a character", is.character(x))
assert("`m` must be a match object from `regexpr()`",
inherits(m, "integer") &&
all(c("match.length", "capture.start", "capture.length", "capture.names") %in% names(attributes(m))))
starts <- attr(m, "capture.start")
strings <- substring(x, starts, starts + attr(m, "capture.length") - 1L)
res <- data.frame(matrix(strings, ncol = NCOL(starts)), stringsAsFactors = FALSE)
colnames(res) <- auto_name(attr(m, "capture.names"))
res[is.na(m) | m == -1, ] <- NA_character_
res
}
auto_name <- function(names) {
missing <- names == ""
if (all(!missing)) {
return(names)
}
names[missing] <- seq_along(names)[missing]
names
}
is_windows <- function() {
# mock for tests
if (isTRUE(Sys.getenv("FS_IS_WINDOWS", "FALSE") == "TRUE")) {
return(TRUE)
}
tolower(Sys.info()[["sysname"]]) == "windows"
}
# This is needed to avoid checking the class of fs_path objects in the
# tests.
# @export
compare.fs_path <- function(x, y, ...) {
if (identical(class(y), "character")) {
class(x) <- NULL
}
names(x) <- NULL
names(y) <- NULL
NextMethod("compare")
}
# @export
compare.fs_perms <- function(x, y, ...) {
if (!inherits(y, "fs_perms")) {
y <- as.character(as_fs_perms(y))
x <- as.character(x)
}
NextMethod("compare")
}
nchar <- function(x, type = "chars", allowNA = FALSE, keepNA = NA) {
# keepNA was introduced in R 3.2.1, previous behavior was equivalent to keepNA
# = FALSE
if (getRversion() < "3.2.1") {
if (!identical(keepNA, FALSE)) {
stop("`keepNA` must be `FALSE` for R < 3.2.1", call. = FALSE)
}
return(base::nchar(x, type, allowNA))
}
base::nchar(x, type, allowNA, keepNA)
}
`%||%` <- function(x, y) if (is.null(x)) y else x
# Only use deterministic entries if we are building documentation in pkgdown.
pkgdown_tmp <- function(path) {
if (identical(Sys.getenv("IN_PKGDOWN"), "true")) {
file_temp_push(path)
}
}
# This is adapted from glue::collapse
# https://github.com/tidyverse/glue/blob/cac874724d09d430036d1bdeba77982e953f29a2/R/glue.R#L140-L161
collapse <- function(x, sep = "", width = Inf, last = "") {
if (length(x) == 0) {
return(character())
}
if (any(is.na(x))) {
return(NA_character_)
}
if (nzchar(last) && length(x) > 1) {
res <- collapse(x[seq(1, length(x) - 1)], sep = sep, width = Inf)
return(collapse(paste0(res, last, x[length(x)]), width = width))
}
x <- paste0(x, collapse = sep)
if (width < Inf) {
x_width <- nchar(x, "width", keepNA = FALSE)
too_wide <- x_width > width
if (too_wide) {
x <- paste0(substr(x, 1, width - 3), "...")
}
}
x
}
assert_no_missing <- function(x) {
nme <- as.character(substitute(x))
idx <- which(is.na(x))
if (length(idx) > 0) {
number <- prettyNum(length(idx), big.mark = ",")
remaining_width <- getOption("width") - nchar(number, keepNA = FALSE) - 29
indexes <- collapse(idx, width = remaining_width, sep = ", ", last = " and ")
msg <- sprintf(
"`%s` must not have missing values
* NAs found at %s locations: %s",
nme,
number,
indexes)
stop(fs_error(msg))
}
}
assert <- function(msg, ..., class = "invalid_argument") {
tests <- unlist(list(...))
if (!all(tests)) {
stop(fs_error(msg, class = class))
}
}
fs_error <- function(msg, class = "invalid_argument") {
structure(class = c(class, "fs_error", "error", "condition"), list(message = msg))
}
lengths <- function(x) {
vapply(x, length, integer(1))
}
as_tibble <- function(x) {
if (getOption("fs.use_tibble", TRUE) && is_installed("tibble")) {
tibble::as_tibble(x)
} else {
x
}
}
is_installed <- function(pkg) {
isTRUE(requireNamespace(pkg, quietly = TRUE))
}
mkdirp <- function(x) {
dir.create(x, showWarnings = FALSE, recursive = TRUE)
}
|
