EnvMapFromReader reads a .env formatted file from the given path, and returns a map of key/value pairs.

LoadEnv loads the environment variables from the given reader The loaders function is used to load the value of an environment variable first-non-nil loader wins if no loader is non-nil, then the default is used, or an error is returned.

LoadEnvReader reads a .env formatted file from the given path, and returns a loader function.

LoadKV returns a loader function that loads the given key/value pairs from the map.

ParseTemplateVars returns a map of environment variables that are referenced in the given reader The map key is the variable name, and the value is the right hand side of the expression.

Variable is the right hand side of an environment variable expression.