R/misc.R
In saezlab/OmnipathR: OmniPath web service client and more
Defines functions
.nse_ensure_str
#!/usr/bin/env Rscript
#
# This file is part of the `OmnipathR` R package
#
# Copyright
# 2018-2024
# Saez Lab, Uniklinik RWTH Aachen, Heidelberg University
#
# File author(s): Alberto Valdeolivas
# Dénes Türei (turei.denes@gmail.com)
# Attila Gábor
#
# Distributed under the MIT (Expat) License.
# See accompanying file `LICENSE` or find a copy at
# https://directory.fsf.org/wiki/License:Expat
#
# Website: https://r.omnipathdb.org/
# Git repo: https://github.com/saezlab/OmnipathR
#
#' Makes sure we have a string even if the argument was passed by NSE
#'
#' @importFrom magrittr %>%
#' @importFrom rlang enquo quo_get_expr quo_text is_symbol
#' @importFrom stringr str_remove
#' @noRd
.nse_ensure_str <- function(arg){
enquo(arg) %>%
{`if`(
is_symbol(quo_get_expr(.)),
quo_text(.),
quo_get_expr(.)
)} %>%
str_remove('`$') %>%
str_remove('^`')
}
#' @noRd
.ensure_dir <- function(path){
dir_path <- dirname(path)
dir.create(dir_path, showWarnings = FALSE, recursive = TRUE)
if(dir.exists(dir_path)){
logger::log_debug('Created directory `%s`', dir_path)
}else{
logger::log_warn('Failed to create directory `%s`', dir_path)
}
}
#' @noRd
.path_writable <- function(path){
path_prev <- ''
while(is.character(path) && path != path_prev){
if(file.access(path, mode = 2L) == 0L) {
return(TRUE)
}else if(file.exists(path)){
return(FALSE)
}else{
prev_path <- path
path <- dirname(path)
}
}
return(FALSE)
}
#' @noRd
.ensure_safe_path <- function(path, directory = FALSE){
if(!.path_writable(path)){
fname <- `if`(directory, '', basename(path))
fallback_path <- file.path(tempdir(check = TRUE), fname)
warning(sprintf(
'OmnipathR: Falling back to path `%s` instead of `%s`.',
fallback_path,
path
))
path <- fallback_path
}
path
}
#' Inserts an element to a list if the value is not null.
#'
#' @noRd
insert_if_not_null <- function(l, ...){
elements <- list(...)
for(name in names(elements)){
if(!is.null(elements[[name]])){
l[[name]] <- elements[[name]]
}
}
return(l)
}
#' Makes sure value is a list
#'
#' This function is different from `as.list` because it returns a list with
#' a single NULL element if `value` is NULL
#'
#' @return A list
#'
#' @noRd
ensure_list <- function(value){
`if`(
is.null(value),
list(NULL),
as.list(value)
)
}
#' Makes sure value is a list
#'
#' If \code{value} is a list returns it unchanged, otherwise it wraps it
#' into a single element list.
#'
#' @return A list
#'
#' @importFrom magrittr %>% equals
#' @noRd
ensure_list_2 <- function(value){
`if`(
class(value)[1] %>% equals('list'),
value,
list(value)
)
}
#' Merge two lists by name
#'
#' From the RCurl package. This is a method that merges the contents of one
#' list with another by adding the named elements in the second that are not
#' in the first. In other words, the first list is the target template, and
#' the second one adds any extra elements that it has.
#'
#' @param x The list to which elements will be added.
#' @param y The list which will supply additional elements to ‘x’ that
#' are not already there by name.
#' @param ... Ignored.
#'
#' @return A named list whose name set is the union of the elements in names
#' of x and y and whose values are those taken from y and then with
#' those in x, overwriting if necessary.
#'
#' @author Duncan Temple Lang
#'
#' @noRd
merge_lists <- function (x, y, ...)
{
if(length(x) == 0) return(y)
if(length(y) == 0) return(x)
i <- match(names(y), names(x))
i <- is.na(i)
if(any(i)){
x[names(y)[which(i)]] <- y[which(i)]
}
x
}
#' Returns NULL if `value` is an empty list or a list with a single NULL
#' element otherwise the value itself
#'
#' @importFrom utils tail
#'
#' @noRd
list_null <- function(value){
`if`(
is.list(value) && (
length(value) == 0 ||
length(value) == 1 && is.null(value[[1]])
),
NULL,
value
)
}
#' Returns the extension of a file name
#'
#' @importFrom magrittr %>%
#'
#' @noRd
file_extension <- function(name){
name %>%
strsplit('\\?') %>%
`[[`(1) %>%
`[`(1) %>%
strsplit('\\.') %>%
`[[`(1) %>%
grep('^[[:alnum:]]+$', ., value = TRUE) %>%
tail(
`if`(
length(.) > 1 && nchar(tail(., 1)) < 5,
`if`(
.[length(.) - 1] == 'tar',
2,
1
),
0
)
) %>%
paste(collapse = '.')
}
#' Adds an extension to a path or file name
#'
#' @noRd
file_add_extension <- function(fname, ext){
ifelse(
is.character(ext) & ext != '' & !endsWith(fname, ext),
paste(fname, ext, sep = '.'),
fname
)
}
#' Converts any path to absolute path
#'
#' This function is used to convert relative file paths to absolute file paths
#' without checking if the file exists as \code{tools::file_path_as_absolute}
#' does. Modified from
#' https://github.com/sbfnk/RBi/blob/master/R/absolute_path.R
#'
#' @param filename name of a file, absolute or relative to a folder
#' @param dirname name of a folder where the file is supposed to be
#'
#' @return a character string containing the absolute path
#'
#' @noRd
absolute_path <- function(path, winslash = '\\'){
if(
(
.Platform$OS.type == 'unix' &&
substr(path, 1, 1) %in% c('/', '~')
) || (
.Platform$OS.type == 'windows' &&
grepl('^[A-z]:[\\\\/]', path)
)
){
# the path is already absolute
result <- normalizePath(path, winslash, FALSE)
} else {
# prepending the current directory to make it absolute
result <- file.path(normalizePath(getwd(), winslash), path)
}
return(result)
}
#' Closes a connection when the parent call exits
#'
#' @noRd
close_on_exit <- function(con, envir = parent.frame()){
assign('con', con, envir)
do.call('on.exit', list(quote(close(con))), envir = envir)
}
#' Reads RDS from an URL
#'
#' Unfortunately the APIs of R built in functions and packages are very
#' diverse, for example, readRDS can not understand if an URL is passed to it.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
url_rds <- function(URL){
URL %>%
url %>%
readRDS
}
#' Issues a log message about successful loading of a dataset
#'
#' @param data A data frame.
#'
#' @importFrom magrittr %>% %<>%
#' @importFrom rlang %||%
#'
#' @noRd
load_success <- function(data, resource = NULL, from_cache = NULL){
from_cache %<>% if_null(data %>% is_from_cache)
resource %<>% if_null(if_null_len0(attr(data, 'source'), 'Unknown source'))
'%s: %sloaded %d records%s' %>%
sprintf(
resource,
`if`(from_cache, '', 'down'),
data %>% {if_null(nrow(.), length(.))} %||% 0,
`if`(from_cache, ' from cache', '')
) %>%
logger::log_success()
}
#' Is the object labelled as cache origin
#'
#' @param obj Any object, typically a data frame.
#'
#' @noRd
is_from_cache <- function(obj){
obj %>% attr('origin') %>% {!is.null(.) && . == 'cache'}
}
#' Adds default parameters to a list of function arguments
#'
#' @param list The actual parameters typically provided by the user.
#' @param fun The function the parameters will be passed to.
#' @param defaults Named list with the default arguments which should be
#' added to `param` if they are suitable for `fun` and if they haven't
#' been overridden by `param`.
#'
#' @importFrom magrittr %>%
#' @importFrom purrr walk2
#'
#' @noRd
add_defaults <- function(param, fun, defaults){
this_env <- environment()
defaults %>%
walk2(
names(.),
function(value, key){
if(
!(key %in% names(param)) &&
key %in% names(formals(fun))
){
param[[key]] <- value
assign('param', param, this_env)
}
}
)
return(param)
}
#' Copies attributes from one object to another
#'
#' @param to The object to copy the attribute to.
#' @param from The object to copy the attribute from.
#' @param names Character: the names of the attributes
#'
#' @importFrom magrittr %>%
#' @importFrom purrr reduce
#'
#' @noRd
copy_attrs <- function(to, from, names){
names %>%
reduce(
function(target, name){
target %>%
`attr<-`(name, attr(from, name))
},
.init = to
)
}
#' Returns `value1` if it's not NULL otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null <- function(value1, value2){
value1 %>%
is.null %>%
`if`(value2, value1)
}
#' Returns \code{NULL} if `value` is \code{NULL}, otherwise executes the
#' function `fun` on `value`.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
null_or_call <- function(value, fun, ...){
value %>%
is.null %>%
`if`(NULL, fun(value, ...))
}
#' Call a function if available
#'
#' @importFrom magrittr %>%
#' @importFrom rlang is_function
#' @noRd
maybe_call <- function(fun, ..., .return_args = FALSE) {
fun %>%
`if`(is_function(.), ., maybe_get(.)) %>%
{`if`(
is_function(.),
.(...),
`if`(
is.null(.) || .return_args,
list(...) %>% unlist_len1,
.
)
)}
}
#' Try to get name, do nothing if it is not available
#'
#' @noRd
maybe_get <- function(name) {
tryCatch(get(name), error = function(e) {return(name)})
}
#' Returns the first element for length one lists or vectors
#'
#' @importFrom dplyr first
#'
#' @noRd
unlist_len1 <- function(x) {
`if`(length(x) <= 1L, first(x), x)
}
#' Returns `value1` if it's not zero length otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_empty <- function(value1, value2){
value1 %>%
is_empty %>%
`if`(value2, value1)
}
#' Tells if value is NULL or a vector of length zero
#'
#' @importFrom magrittr %>% equals
#'
#' @noRd
is_empty <- function(value){
value %>% length %>% equals(0L)
}
#' Tells if value is NULL or a vector of length zero or an empty string
#'
#' @importFrom magrittr %>% extract
#'
#' @noRd
is_empty_2 <- function(value){
value %>%
{
is.null(.) ||
length(.) == 0L ||
!is_closure(.) &&
!is.na(extract(., 1L)) &&
extract(., 1L) == ''
}
}
#' Tells if value is closure-like
#'
#' @importFrom magrittr %>% is_in
#' @noRd
is_closure <- function(value) {
value %>%
typeof %>%
is_in(c('closure', 'special', 'builtin'))
}
#' Returns `value1` if it's not NULL or zero length otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null_len0 <- function(value1, value2){
value1 %>%
is_empty_2 %>%
`if`(value2, value1)
}
#' Same as `if_null_len0` but considers empty string empty too
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null_len0_2 <- function(value1, value2){
value1 %>%
is_empty_2 %>%
`if`(value2, value1)
}
#' Workaround against R CMD check notes about using `:::`
#'
#' @importFrom rlang enquo !!
#'
#' @noRd
`%:::%` <- function(pkg, fun){
pkg <- .nse_ensure_str(!!enquo(pkg))
fun <- .nse_ensure_str(!!enquo(fun))
get(fun, envir = asNamespace(pkg), inherits = FALSE)
}
#' Workaround against R CMD check `import not declared from` warnings
#'
#' @noRd
`%::%` <- function(pkg, name)
{
pkg <- as.character(substitute(pkg))
name <- as.character(substitute(name))
getExportedValue(pkg, name)
}
#' Wrapper around loadNamespace to avoid R CMD check `call not declared from`
#' warnings.
#'
#' @param pkgname Character: name of the package.
#'
#' @return The package namespace loaded.
#'
#' @noRd
load_namespace <- function(pkgname){
loadNamespace(pkgname)
}
#' Calls a function without throwing error on empty vectors
#'
#' Many functions can not tolerate if their input vector is empty. However,
#' especially in longer workflows, it can happen easily that we end up with
#' an empty vector. Wrapping the call into this method provides a control
#' over those cases and avoids error.
#'
#' @param v Vector, potentially empty or `NULL`.
#' @param fun Function to call.
#' @param .default The value to return if the vector is empty.
#' @param ... Arguments for `fun`.
#'
#' @noRd
empty_no_problem <- function(v, fun, .default = NULL, ...){
`if`(
is.null(v) || length(v) == 0,
.default,
fun(v, ...)
)
}
#' Distinguish a list from a data frame
#'
#' \code{is.list} returns `TRUE` for data frames. If we want to check if
#' an object is a list but not a data frame we need to double check.
#'
#' @param obj The object to check, any kind of object.
#'
#' @noRd
just_a_list <- function(obj){
is.list(obj) && !is.data.frame(obj)
}
#' Compare two lists for complete equality
#'
#' @param list1 A list.
#' @param list2 Another list.
#'
#' @return Logical.
#'
#' @importFrom magrittr %>%
#' @noRd
lists_identical <- function(list1, list2){
keys1 <- list1 %>% names %>% sort
keys2 <- list2 %>% names %>% sort
keys <- union(keys1, keys2)
if(is.null(keys1) && is.null(keys2)){
return(identical(list1, list2))
}
if(any(keys1 != keys2)){
return(FALSE)
}
for(key in keys){
val1 <- list1[[key]]
val2 <- list2[[key]]
if(length(val1) != length(val2)){
return(FALSE)
}else if(is.list(val1) && is.list(val2)){
if(!lists_identical(val1, val2)){
return(FALSE)
}
}else if(!is.atomic(val1) || !is.atomic(val2)){
return(FALSE)
}else if(any(sort(val1) != sort(val2))){
return(FALSE)
}
}
return(TRUE)
}
#' Splits a vector into a list of chunks of a certain size
#'
#' @importFrom magrittr %>% equals
#'
#' @noRd
chunks <- function(v, size){
v %>%
split(seq_along(.) %>% `-`(1) %>% `%%`(size) %>% equals(0) %>% cumsum)
}
#' Pretty print a list of words
#'
#' @param words Character vector with words.
#' @param quotes Logical: wrap all words in backticks.
#'
#' @importFrom magrittr %>%
#' @importFrom utils head tail
#'
#' @noRd
pretty_list <- function(words, quotes = TRUE){
words %>%
sort %>%
{`if`(quotes, sprintf('`%s`', .), .)} %>%
{sprintf(
'%s%s%s',
paste(head(., -1), collapse = ', '),
`if`(length(.) > 1, ' and ', ''),
tail(., 1)
)}
}
#' Plural form of a word depending on the count of the objects
#'
#' @param objects The objects to count.
#' @param word Character: the name of the objects.
#' @param irregular Character: irregular plural form (anything else than
#' adding an "s").
#'
#' @importFrom rlang %||%
#'
#' @noRd
plural <- function(objects, word, irregular = NULL){
`if`(
length(objects) > 1,
irregular %||% sprintf('%ss', word),
word
)
}
#' Convert an atomic variable to the type of another atomic variable
#'
#' @param var The variable to be converted.
#' @param type Convert to the type of this variable.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
as_type <- function(var, type){
if(!is.atomic(var) || !is.atomic(type) || is.null(type)){
var
}else{
(type %>% typeof %>% sprintf('as.%s', .) %>% get)(var)
}
}
#' Retrieve the open connection(s) pointing to URI
#'
#' @param uri Character: path or URL the connection points to.
#'
#' @return A list of connection objects.
#'
#' @importFrom magrittr %>%
#' @importFrom tibble rownames_to_column
#' @importFrom dplyr filter pull
#' @importFrom purrr map
#' @noRd
get_connections <- function(uri){
# NSE vs. R CMD check workaround
description <- con_id <- NULL
showConnections(all = TRUE) %>%
as.data.frame %>%
rownames_to_column('con_id') %>%
filter(description == uri) %>%
pull(con_id) %>%
as.integer %>%
map(getConnection)
}
#' Closes the open connection(s) pointing to URI
#'
#' @param uri Character: path or URL the connection points to.
#'
#' @return Invisible `NULL`.
#'
#' @importFrom magrittr %>%
#' @importFrom purrr walk
#' @noRd
close_connection <- function(uri){
uri %>%
get_connections %>%
walk(close)
invisible(NULL)
}
#' Replace NULL elements by NAs in a list
#'
#' @param l A list.
#'
#' @return A list with NULL elements replaced by NAs.
#'
#' @importFrom purrr map
#' @noRd
null_to_na <- function(l){
map(l, function(x){`if`(is.null(x), NA, x)})
}
#' Add indentation in front of lines
#'
#' @param lines Character vector.
#' @param depth Integer: number of spaces.
#'
#' @return Character vector of indented lines.
#'
#' @importFrom magrittr %>%
#' @noRd
indent <- function(lines, depth = 4L){
' ' %>%
rep(depth) %>%
paste(collapse = '') %>%
paste0(lines)
}
#' Read a JSON
#'
#' @importFrom logger log_trace log_warn
#' @importFrom jsonlite validate fromJSON
#' @noRd
safe_json <- function(path, encoding = 'UTF-8', ...){
lines <- suppressWarnings(readLines(con = path, encoding = encoding))
log_trace('Reading JSON from `%s` (encoding: %s).', path, encoding)
json_ok <- jsonlite::validate(txt = lines)
log_trace('JSON validation successful: %s', json_ok)
if(!json_ok){
msg <- sprintf(
'Failed to read JSON from `%s` (file exists: %s)',
path,
file.exists(path)
)
logger::log_warn(msg)
warning(msg)
}
jsonlite::fromJSON(txt = `if`(json_ok, lines, '[]'), ...)
}
#' Is the package running on a build server?
#'
#' Build servers are for automated testing of packages. Bioconductor and
#' Saez Lab (developers & maintainers of this package) both run their own
#' build servers.
#'
#' @noRd
.on_buildserver <- function(){
Sys.info()['user'] %in% c('biocbuild', 'omnipath')
}
#' Is the package running on a Bioconductor build server?'
#'
#' @noRd
.on_bioc_buildserver <- function(){
Sys.info()['user'] == 'biocbuild'
}
#' Bypass slow doctests
#'
#' Makes the calling function return a value, bypassing further execution.
#' Used in functions that normally take a long time to run, and hence, due
#' to the 40 minutes timeout on Bioconductor build servers, we can not afford
#' to run them. We still run these doctests daily on our own build server,
#' so they fulfill their testing purpose.
#'
#' @param value The value to return.
#'
#' @return This function does not return anything, its parent returns
#' `value`.
#'
#' @noRd
.slow_doctest <- function(value = NULL, env = parent.frame()){
if(.on_buildserver()){
log_trace('Bypassing call: `%s`.', deparse(sys.call(-1L)))
log_trace(paste(
'This behaviour is intended for running R CMD check',
'within limited time and is triggered solely by the user name.',
'Please report if you see this anywhere outside of a',
'Bioconductor build server.'
))
do.call(return, list(value), envir = env)
}
}
#' Unlist, unique and sort a list or vector
#'
#' @param v List or vector.
#'
#' @return A vector of unique values sorted.
#'
#' @importFrom magrittr %>%
#' @noRd
unique_sorted <- function(v) {
v %>% unlist %>% unique %>% sort
}
#' Joins a list of words by comma and space
#'
#' @noRd
enum_format <- function(words) {
paste(words, collapse = ', ')
}
saezlab/OmnipathR documentation built on May 3, 2024, 5:32 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Defines functions .nse_ensure_str
#!/usr/bin/env Rscript
#
# This file is part of the `OmnipathR` R package
#
# Copyright
# 2018-2024
# Saez Lab, Uniklinik RWTH Aachen, Heidelberg University
#
# File author(s): Alberto Valdeolivas
# Dénes Türei (turei.denes@gmail.com)
# Attila Gábor
#
# Distributed under the MIT (Expat) License.
# See accompanying file `LICENSE` or find a copy at
# https://directory.fsf.org/wiki/License:Expat
#
# Website: https://r.omnipathdb.org/
# Git repo: https://github.com/saezlab/OmnipathR
#
#' Makes sure we have a string even if the argument was passed by NSE
#'
#' @importFrom magrittr %>%
#' @importFrom rlang enquo quo_get_expr quo_text is_symbol
#' @importFrom stringr str_remove
#' @noRd
.nse_ensure_str <- function(arg){
enquo(arg) %>%
{`if`(
is_symbol(quo_get_expr(.)),
quo_text(.),
quo_get_expr(.)
)} %>%
str_remove('`$') %>%
str_remove('^`')
}
#' @noRd
.ensure_dir <- function(path){
dir_path <- dirname(path)
dir.create(dir_path, showWarnings = FALSE, recursive = TRUE)
if(dir.exists(dir_path)){
logger::log_debug('Created directory `%s`', dir_path)
}else{
logger::log_warn('Failed to create directory `%s`', dir_path)
}
}
#' @noRd
.path_writable <- function(path){
path_prev <- ''
while(is.character(path) && path != path_prev){
if(file.access(path, mode = 2L) == 0L) {
return(TRUE)
}else if(file.exists(path)){
return(FALSE)
}else{
prev_path <- path
path <- dirname(path)
}
}
return(FALSE)
}
#' @noRd
.ensure_safe_path <- function(path, directory = FALSE){
if(!.path_writable(path)){
fname <- `if`(directory, '', basename(path))
fallback_path <- file.path(tempdir(check = TRUE), fname)
warning(sprintf(
'OmnipathR: Falling back to path `%s` instead of `%s`.',
fallback_path,
path
))
path <- fallback_path
}
path
}
#' Inserts an element to a list if the value is not null.
#'
#' @noRd
insert_if_not_null <- function(l, ...){
elements <- list(...)
for(name in names(elements)){
if(!is.null(elements[[name]])){
l[[name]] <- elements[[name]]
}
}
return(l)
}
#' Makes sure value is a list
#'
#' This function is different from `as.list` because it returns a list with
#' a single NULL element if `value` is NULL
#'
#' @return A list
#'
#' @noRd
ensure_list <- function(value){
`if`(
is.null(value),
list(NULL),
as.list(value)
)
}
#' Makes sure value is a list
#'
#' If \code{value} is a list returns it unchanged, otherwise it wraps it
#' into a single element list.
#'
#' @return A list
#'
#' @importFrom magrittr %>% equals
#' @noRd
ensure_list_2 <- function(value){
`if`(
class(value)[1] %>% equals('list'),
value,
list(value)
)
}
#' Merge two lists by name
#'
#' From the RCurl package. This is a method that merges the contents of one
#' list with another by adding the named elements in the second that are not
#' in the first. In other words, the first list is the target template, and
#' the second one adds any extra elements that it has.
#'
#' @param x The list to which elements will be added.
#' @param y The list which will supply additional elements to ‘x’ that
#' are not already there by name.
#' @param ... Ignored.
#'
#' @return A named list whose name set is the union of the elements in names
#' of x and y and whose values are those taken from y and then with
#' those in x, overwriting if necessary.
#'
#' @author Duncan Temple Lang
#'
#' @noRd
merge_lists <- function (x, y, ...)
{
if(length(x) == 0) return(y)
if(length(y) == 0) return(x)
i <- match(names(y), names(x))
i <- is.na(i)
if(any(i)){
x[names(y)[which(i)]] <- y[which(i)]
}
x
}
#' Returns NULL if `value` is an empty list or a list with a single NULL
#' element otherwise the value itself
#'
#' @importFrom utils tail
#'
#' @noRd
list_null <- function(value){
`if`(
is.list(value) && (
length(value) == 0 ||
length(value) == 1 && is.null(value[[1]])
),
NULL,
value
)
}
#' Returns the extension of a file name
#'
#' @importFrom magrittr %>%
#'
#' @noRd
file_extension <- function(name){
name %>%
strsplit('\\?') %>%
`[[`(1) %>%
`[`(1) %>%
strsplit('\\.') %>%
`[[`(1) %>%
grep('^[[:alnum:]]+$', ., value = TRUE) %>%
tail(
`if`(
length(.) > 1 && nchar(tail(., 1)) < 5,
`if`(
.[length(.) - 1] == 'tar',
2,
1
),
0
)
) %>%
paste(collapse = '.')
}
#' Adds an extension to a path or file name
#'
#' @noRd
file_add_extension <- function(fname, ext){
ifelse(
is.character(ext) & ext != '' & !endsWith(fname, ext),
paste(fname, ext, sep = '.'),
fname
)
}
#' Converts any path to absolute path
#'
#' This function is used to convert relative file paths to absolute file paths
#' without checking if the file exists as \code{tools::file_path_as_absolute}
#' does. Modified from
#' https://github.com/sbfnk/RBi/blob/master/R/absolute_path.R
#'
#' @param filename name of a file, absolute or relative to a folder
#' @param dirname name of a folder where the file is supposed to be
#'
#' @return a character string containing the absolute path
#'
#' @noRd
absolute_path <- function(path, winslash = '\\'){
if(
(
.Platform$OS.type == 'unix' &&
substr(path, 1, 1) %in% c('/', '~')
) || (
.Platform$OS.type == 'windows' &&
grepl('^[A-z]:[\\\\/]', path)
)
){
# the path is already absolute
result <- normalizePath(path, winslash, FALSE)
} else {
# prepending the current directory to make it absolute
result <- file.path(normalizePath(getwd(), winslash), path)
}
return(result)
}
#' Closes a connection when the parent call exits
#'
#' @noRd
close_on_exit <- function(con, envir = parent.frame()){
assign('con', con, envir)
do.call('on.exit', list(quote(close(con))), envir = envir)
}
#' Reads RDS from an URL
#'
#' Unfortunately the APIs of R built in functions and packages are very
#' diverse, for example, readRDS can not understand if an URL is passed to it.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
url_rds <- function(URL){
URL %>%
url %>%
readRDS
}
#' Issues a log message about successful loading of a dataset
#'
#' @param data A data frame.
#'
#' @importFrom magrittr %>% %<>%
#' @importFrom rlang %||%
#'
#' @noRd
load_success <- function(data, resource = NULL, from_cache = NULL){
from_cache %<>% if_null(data %>% is_from_cache)
resource %<>% if_null(if_null_len0(attr(data, 'source'), 'Unknown source'))
'%s: %sloaded %d records%s' %>%
sprintf(
resource,
`if`(from_cache, '', 'down'),
data %>% {if_null(nrow(.), length(.))} %||% 0,
`if`(from_cache, ' from cache', '')
) %>%
logger::log_success()
}
#' Is the object labelled as cache origin
#'
#' @param obj Any object, typically a data frame.
#'
#' @noRd
is_from_cache <- function(obj){
obj %>% attr('origin') %>% {!is.null(.) && . == 'cache'}
}
#' Adds default parameters to a list of function arguments
#'
#' @param list The actual parameters typically provided by the user.
#' @param fun The function the parameters will be passed to.
#' @param defaults Named list with the default arguments which should be
#' added to `param` if they are suitable for `fun` and if they haven't
#' been overridden by `param`.
#'
#' @importFrom magrittr %>%
#' @importFrom purrr walk2
#'
#' @noRd
add_defaults <- function(param, fun, defaults){
this_env <- environment()
defaults %>%
walk2(
names(.),
function(value, key){
if(
!(key %in% names(param)) &&
key %in% names(formals(fun))
){
param[[key]] <- value
assign('param', param, this_env)
}
}
)
return(param)
}
#' Copies attributes from one object to another
#'
#' @param to The object to copy the attribute to.
#' @param from The object to copy the attribute from.
#' @param names Character: the names of the attributes
#'
#' @importFrom magrittr %>%
#' @importFrom purrr reduce
#'
#' @noRd
copy_attrs <- function(to, from, names){
names %>%
reduce(
function(target, name){
target %>%
`attr<-`(name, attr(from, name))
},
.init = to
)
}
#' Returns `value1` if it's not NULL otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null <- function(value1, value2){
value1 %>%
is.null %>%
`if`(value2, value1)
}
#' Returns \code{NULL} if `value` is \code{NULL}, otherwise executes the
#' function `fun` on `value`.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
null_or_call <- function(value, fun, ...){
value %>%
is.null %>%
`if`(NULL, fun(value, ...))
}
#' Call a function if available
#'
#' @importFrom magrittr %>%
#' @importFrom rlang is_function
#' @noRd
maybe_call <- function(fun, ..., .return_args = FALSE) {
fun %>%
`if`(is_function(.), ., maybe_get(.)) %>%
{`if`(
is_function(.),
.(...),
`if`(
is.null(.) || .return_args,
list(...) %>% unlist_len1,
.
)
)}
}
#' Try to get name, do nothing if it is not available
#'
#' @noRd
maybe_get <- function(name) {
tryCatch(get(name), error = function(e) {return(name)})
}
#' Returns the first element for length one lists or vectors
#'
#' @importFrom dplyr first
#'
#' @noRd
unlist_len1 <- function(x) {
`if`(length(x) <= 1L, first(x), x)
}
#' Returns `value1` if it's not zero length otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_empty <- function(value1, value2){
value1 %>%
is_empty %>%
`if`(value2, value1)
}
#' Tells if value is NULL or a vector of length zero
#'
#' @importFrom magrittr %>% equals
#'
#' @noRd
is_empty <- function(value){
value %>% length %>% equals(0L)
}
#' Tells if value is NULL or a vector of length zero or an empty string
#'
#' @importFrom magrittr %>% extract
#'
#' @noRd
is_empty_2 <- function(value){
value %>%
{
is.null(.) ||
length(.) == 0L ||
!is_closure(.) &&
!is.na(extract(., 1L)) &&
extract(., 1L) == ''
}
}
#' Tells if value is closure-like
#'
#' @importFrom magrittr %>% is_in
#' @noRd
is_closure <- function(value) {
value %>%
typeof %>%
is_in(c('closure', 'special', 'builtin'))
}
#' Returns `value1` if it's not NULL or zero length otherwise `value2`
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null_len0 <- function(value1, value2){
value1 %>%
is_empty_2 %>%
`if`(value2, value1)
}
#' Same as `if_null_len0` but considers empty string empty too
#'
#' @importFrom magrittr %>%
#'
#' @noRd
if_null_len0_2 <- function(value1, value2){
value1 %>%
is_empty_2 %>%
`if`(value2, value1)
}
#' Workaround against R CMD check notes about using `:::`
#'
#' @importFrom rlang enquo !!
#'
#' @noRd
`%:::%` <- function(pkg, fun){
pkg <- .nse_ensure_str(!!enquo(pkg))
fun <- .nse_ensure_str(!!enquo(fun))
get(fun, envir = asNamespace(pkg), inherits = FALSE)
}
#' Workaround against R CMD check `import not declared from` warnings
#'
#' @noRd
`%::%` <- function(pkg, name)
{
pkg <- as.character(substitute(pkg))
name <- as.character(substitute(name))
getExportedValue(pkg, name)
}
#' Wrapper around loadNamespace to avoid R CMD check `call not declared from`
#' warnings.
#'
#' @param pkgname Character: name of the package.
#'
#' @return The package namespace loaded.
#'
#' @noRd
load_namespace <- function(pkgname){
loadNamespace(pkgname)
}
#' Calls a function without throwing error on empty vectors
#'
#' Many functions can not tolerate if their input vector is empty. However,
#' especially in longer workflows, it can happen easily that we end up with
#' an empty vector. Wrapping the call into this method provides a control
#' over those cases and avoids error.
#'
#' @param v Vector, potentially empty or `NULL`.
#' @param fun Function to call.
#' @param .default The value to return if the vector is empty.
#' @param ... Arguments for `fun`.
#'
#' @noRd
empty_no_problem <- function(v, fun, .default = NULL, ...){
`if`(
is.null(v) || length(v) == 0,
.default,
fun(v, ...)
)
}
#' Distinguish a list from a data frame
#'
#' \code{is.list} returns `TRUE` for data frames. If we want to check if
#' an object is a list but not a data frame we need to double check.
#'
#' @param obj The object to check, any kind of object.
#'
#' @noRd
just_a_list <- function(obj){
is.list(obj) && !is.data.frame(obj)
}
#' Compare two lists for complete equality
#'
#' @param list1 A list.
#' @param list2 Another list.
#'
#' @return Logical.
#'
#' @importFrom magrittr %>%
#' @noRd
lists_identical <- function(list1, list2){
keys1 <- list1 %>% names %>% sort
keys2 <- list2 %>% names %>% sort
keys <- union(keys1, keys2)
if(is.null(keys1) && is.null(keys2)){
return(identical(list1, list2))
}
if(any(keys1 != keys2)){
return(FALSE)
}
for(key in keys){
val1 <- list1[[key]]
val2 <- list2[[key]]
if(length(val1) != length(val2)){
return(FALSE)
}else if(is.list(val1) && is.list(val2)){
if(!lists_identical(val1, val2)){
return(FALSE)
}
}else if(!is.atomic(val1) || !is.atomic(val2)){
return(FALSE)
}else if(any(sort(val1) != sort(val2))){
return(FALSE)
}
}
return(TRUE)
}
#' Splits a vector into a list of chunks of a certain size
#'
#' @importFrom magrittr %>% equals
#'
#' @noRd
chunks <- function(v, size){
v %>%
split(seq_along(.) %>% `-`(1) %>% `%%`(size) %>% equals(0) %>% cumsum)
}
#' Pretty print a list of words
#'
#' @param words Character vector with words.
#' @param quotes Logical: wrap all words in backticks.
#'
#' @importFrom magrittr %>%
#' @importFrom utils head tail
#'
#' @noRd
pretty_list <- function(words, quotes = TRUE){
words %>%
sort %>%
{`if`(quotes, sprintf('`%s`', .), .)} %>%
{sprintf(
'%s%s%s',
paste(head(., -1), collapse = ', '),
`if`(length(.) > 1, ' and ', ''),
tail(., 1)
)}
}
#' Plural form of a word depending on the count of the objects
#'
#' @param objects The objects to count.
#' @param word Character: the name of the objects.
#' @param irregular Character: irregular plural form (anything else than
#' adding an "s").
#'
#' @importFrom rlang %||%
#'
#' @noRd
plural <- function(objects, word, irregular = NULL){
`if`(
length(objects) > 1,
irregular %||% sprintf('%ss', word),
word
)
}
#' Convert an atomic variable to the type of another atomic variable
#'
#' @param var The variable to be converted.
#' @param type Convert to the type of this variable.
#'
#' @importFrom magrittr %>%
#'
#' @noRd
as_type <- function(var, type){
if(!is.atomic(var) || !is.atomic(type) || is.null(type)){
var
}else{
(type %>% typeof %>% sprintf('as.%s', .) %>% get)(var)
}
}
#' Retrieve the open connection(s) pointing to URI
#'
#' @param uri Character: path or URL the connection points to.
#'
#' @return A list of connection objects.
#'
#' @importFrom magrittr %>%
#' @importFrom tibble rownames_to_column
#' @importFrom dplyr filter pull
#' @importFrom purrr map
#' @noRd
get_connections <- function(uri){
# NSE vs. R CMD check workaround
description <- con_id <- NULL
showConnections(all = TRUE) %>%
as.data.frame %>%
rownames_to_column('con_id') %>%
filter(description == uri) %>%
pull(con_id) %>%
as.integer %>%
map(getConnection)
}
#' Closes the open connection(s) pointing to URI
#'
#' @param uri Character: path or URL the connection points to.
#'
#' @return Invisible `NULL`.
#'
#' @importFrom magrittr %>%
#' @importFrom purrr walk
#' @noRd
close_connection <- function(uri){
uri %>%
get_connections %>%
walk(close)
invisible(NULL)
}
#' Replace NULL elements by NAs in a list
#'
#' @param l A list.
#'
#' @return A list with NULL elements replaced by NAs.
#'
#' @importFrom purrr map
#' @noRd
null_to_na <- function(l){
map(l, function(x){`if`(is.null(x), NA, x)})
}
#' Add indentation in front of lines
#'
#' @param lines Character vector.
#' @param depth Integer: number of spaces.
#'
#' @return Character vector of indented lines.
#'
#' @importFrom magrittr %>%
#' @noRd
indent <- function(lines, depth = 4L){
' ' %>%
rep(depth) %>%
paste(collapse = '') %>%
paste0(lines)
}
#' Read a JSON
#'
#' @importFrom logger log_trace log_warn
#' @importFrom jsonlite validate fromJSON
#' @noRd
safe_json <- function(path, encoding = 'UTF-8', ...){
lines <- suppressWarnings(readLines(con = path, encoding = encoding))
log_trace('Reading JSON from `%s` (encoding: %s).', path, encoding)
json_ok <- jsonlite::validate(txt = lines)
log_trace('JSON validation successful: %s', json_ok)
if(!json_ok){
msg <- sprintf(
'Failed to read JSON from `%s` (file exists: %s)',
path,
file.exists(path)
)
logger::log_warn(msg)
warning(msg)
}
jsonlite::fromJSON(txt = `if`(json_ok, lines, '[]'), ...)
}
#' Is the package running on a build server?
#'
#' Build servers are for automated testing of packages. Bioconductor and
#' Saez Lab (developers & maintainers of this package) both run their own
#' build servers.
#'
#' @noRd
.on_buildserver <- function(){
Sys.info()['user'] %in% c('biocbuild', 'omnipath')
}
#' Is the package running on a Bioconductor build server?'
#'
#' @noRd
.on_bioc_buildserver <- function(){
Sys.info()['user'] == 'biocbuild'
}
#' Bypass slow doctests
#'
#' Makes the calling function return a value, bypassing further execution.
#' Used in functions that normally take a long time to run, and hence, due
#' to the 40 minutes timeout on Bioconductor build servers, we can not afford
#' to run them. We still run these doctests daily on our own build server,
#' so they fulfill their testing purpose.
#'
#' @param value The value to return.
#'
#' @return This function does not return anything, its parent returns
#' `value`.
#'
#' @noRd
.slow_doctest <- function(value = NULL, env = parent.frame()){
if(.on_buildserver()){
log_trace('Bypassing call: `%s`.', deparse(sys.call(-1L)))
log_trace(paste(
'This behaviour is intended for running R CMD check',
'within limited time and is triggered solely by the user name.',
'Please report if you see this anywhere outside of a',
'Bioconductor build server.'
))
do.call(return, list(value), envir = env)
}
}
#' Unlist, unique and sort a list or vector
#'
#' @param v List or vector.
#'
#' @return A vector of unique values sorted.
#'
#' @importFrom magrittr %>%
#' @noRd
unique_sorted <- function(v) {
v %>% unlist %>% unique %>% sort
}
#' Joins a list of words by comma and space
#'
#' @noRd
enum_format <- function(words) {
paste(words, collapse = ', ')
}
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.