load_dot_env: Load environment variables from the specified file

In durandmorgan/DecoupleR: What the Package Does (One Line, Title Case)

Description

The file is parsed, and line is expected to have one of the following formats:

VARIABLE=value
VARIABLE2="quoted value"
VARIABLE3='another quoted variable'
# Comment line
export EXPORTED="exported variable"
export EXPORTED2=another

Usage

load_dot_env(fpath = ".env")

Arguments

fpath

The path to the '.env' config file

Details

Load variables defined in the given file, as environment variables.

Detailed specification:

• A leading export is ignored, to keep the file compatible with Unix shells.

• No whitespace is allowed right before or after the equal sign, again, to promote compatilibity with Unix shells.

• No multi-line variables are supported currently. The file is strictly parsed line by line.

• Unlike for Unix shells, unquoted values are not terminated by whitespace.

• Comments start with #, without any leading whitespace. You cannot mix variable definitions and comments in the same line.

• Empty lines (containing whitespace only) are ignored.

It is suggested to keep the file in a form that is parsed the same way with dotenv and bash (or other shells).

Examples

# Load from a file
tmp <- tempfile()

cat("dotenvexamplefoo=bar\n", file = tmp)
load_dot_env(tmp)

# Clean up
unlink(tmp)

durandmorgan/DecoupleR documentation built on Jan. 1, 2021, 12:09 a.m.