read_file {readr}R Documentation

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 a path, it must be 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

[Deprecated], 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))
[Package readr version 2.0.2 Index]