This crate will parse an .env file. By implementing the Transformer trait, you can customize the behaviour after processing key value pair in the env file. Comments are preserved and can be used on top of the Rust mapped property.

For convenience there is a feature to_lazy_static that will automatically map key value pairs into a lazy_static block.

Check assert_test.rs and assert_test_lazy.rs for examples.

Add the following to your Cargo.toml...

[dependencies]
env_parser = "*"

Ideally, create build.rs file and call the env_parser reader from the build file, so that your mapped Rust file is always in sync with your .env file.