Env returns an environment variable if not nil, or a default value.

GetEnv returns an environment value if not nil, and an ok boolean.

GetEnvVarRefString returns a text description of whichever field is set within the supplied EnvVarSource argument.

GetEnvVarRefValue returns the value referenced by the supplied EnvVarSource given the other supplied information.

IsEnvironmentArgument checks whether a string is an environment argument, that is, whether it matches the "anycharacters=anycharacters" pattern.

IsValidEnvironmentArgument checks whether a string is a valid environment argument, that is, whether it matches the "wordcharacters=anycharacters" pattern.

NewResourceStore returns a pointer to a new resource store data structure.

ParseEnv parses the elements of the first argument looking for environment variables in key=value form and, if one of those values is "-", it also scans the reader.

SplitEnvironmentFromResources separates resources from environment arguments.

ResourceStore defines a new resource store data structure.