read_file: Read/write a complete file

In readr: Read Rectangular Text Data

Read/write a complete file

Description

read_file() reads a complete file into a single object: either a character vector of length one, or a raw vector. write_file() takes a single string, or a raw vector, and writes it exactly as is. Raw vectors are useful when dealing with binary data, or if you have text data with unknown encoding.

Usage

read_file(file, locale = default_locale())

read_file_raw(file)

write_file(x, file, append = FALSE, path = deprecated())

Arguments

file	Either a path to a file, a connection, or literal data (either a single string or a raw vector). Files ending in .gz, .bz2, .xz, or .zip will be automatically uncompressed. Files starting with ⁠http://⁠, ⁠https://⁠, ⁠ftp://⁠, or ⁠ftps://⁠ will be automatically downloaded. Remote gz files can also be automatically downloaded and decompressed. Literal data is most useful for examples and tests. To be recognised as literal data, the input must be either wrapped with I(), be a string containing at least one new line, or be a vector containing at least one string with a new line. Using a value of clipboard() will read from the system clipboard.
locale	The locale controls defaults that vary from place to place. The default locale is US-centric (like R), but you can use locale() to create your own locale that controls things like the default time zone, encoding, decimal mark, big mark, and day/month names.
x	A single string, or a raw vector to write to disk.
append	If FALSE, will overwrite existing file. If TRUE, will append to existing file. In both cases, if the file does not exist a new file is created.
path	Use the file argument instead.

Value

read_file: A length 1 character vector. read_lines_raw: A raw vector.

Examples

read_file(file.path(R.home("doc"), "AUTHORS"))
read_file_raw(file.path(R.home("doc"), "AUTHORS"))

tmp <- tempfile()

x <- format_csv(mtcars[1:6, ])
write_file(x, tmp)
identical(x, read_file(tmp))

read_lines(I(x))

readr documentation built on May 29, 2024, 2:37 a.m.