genv

func All ¶

func All() []string

All returns a copy of strings representing the environment, in the form "key=value".

func Build ¶

func Build(m map[string]string) []string

Build builds a map to a environment variable slice.

func Contains ¶

func Contains(key string) bool

Contains checks whether the environment variable named <key> exists.

func Get ¶

func Get(key string, def ...string) string

Get returns the value of the environment variable named by the <key>. It returns given <def> if the variable does not exist in the environment.

func GetVar ¶ added in v1.12.2

func GetVar(key string, def ...interface{}) *gvar.Var

GetVar creates and returns a Var with the value of the environment variable named by the <key>. It uses the given <def> if the variable does not exist in the environment.

func GetWithCmd ¶ added in v1.14.6

func GetWithCmd(key string, def ...interface{}) *gvar.Var

GetWithCmd returns the environment value specified <key>. If the environment value does not exist, then it retrieves and returns the value from command line options. It returns the default value <def> if none of them exists.

Fetching Rules: 1. Environment arguments are in uppercase format, eg: GF_<package name>_<variable name>； 2. Command line arguments are in lowercase format, eg: gf.<package name>.<variable name>;

func Map ¶

func Map() map[string]string

Map returns a copy of strings representing the environment as a map.

func Remove ¶

func Remove(key ...string) error

Remove deletes one or more environment variables.

func Set ¶

func Set(key, value string) error

Set sets the value of the environment variable named by the <key>. It returns an error, if any.

func SetMap ¶ added in v1.14.6

func SetMap(m map[string]string) error

SetMap sets the environment variables using map.