Scriptable access to the current process environment.
This interface is implemented by the following components:
Check the existence of an environment variable. This method checks whether an environment variable is present in the environment or not.
- For Unix/Linux platforms we follow the Unix definition: An environment variable exists when getenv() returns a non-NULL value. An environment variable does not exist when getenv() returns NULL. - For non-Unix/Linux platforms we have to fall back to a "portable" definition (which is incorrect for Unix/Linux!!!!) which simply checks whether the string returned by Get() is empty or not.
- name: the variable name to probe.
- if the variable has been set, the value returned is PR_TRUE. If the variable was not defined in the environment PR_FALSE will be returned.
Get the value of an environment variable.
- name: the variable name to retrieve.
- returns the value of the env variable. An empty string will be returned when the env variable does not exist or when the value itself is an empty string - please use |exists()| to probe whether the env variable exists or not.
Set the value of an environment variable.
- name: the variable name to set.
- value: the value to set.
Reference documentation is generated from Mozilla's source.