Exemple #1
0
func (v *Viper) searchMap(source map[string]interface{}, path []string) interface{} {

	if len(path) == 0 {
		return source
	}

	var ok bool
	var next interface{}
	for k, v := range source {
		if strings.ToLower(k) == strings.ToLower(path[0]) {
			ok = true
			next = v
			break
		}
	}

	if ok {
		switch next.(type) {
		case map[interface{}]interface{}:
			return v.searchMap(cast.ToStringMap(next), path[1:])
		case map[string]interface{}:
			// Type assertion is safe here since it is only reached
			// if the type of `next` is the same as the type being asserted
			return v.searchMap(next.(map[string]interface{}), path[1:])
		default:
			return next
		}
	} else {
		return nil
	}
}
Exemple #2
0
func (v *Viper) Sub(key string) *Viper {
	subv := New()
	data := v.Get(key)
	if reflect.TypeOf(data).Kind() == reflect.Map {
		subv.config = cast.ToStringMap(data)
		return subv
	} else {
		return nil
	}
}
Exemple #3
0
func (v *Viper) IsSet(key string) bool {
	path := strings.Split(key, v.keyDelim)

	lcaseKey := strings.ToLower(key)
	val := v.find(lcaseKey)

	if val == nil {
		source := v.find(strings.ToLower(path[0]))
		if source != nil {
			if reflect.TypeOf(source).Kind() == reflect.Map {
				val = v.searchMap(cast.ToStringMap(source), path[1:])
			}
		}
	}

	return val != nil
}
Exemple #4
0
// Given a key, find the value
// Viper will check in the following order:
// flag, env, config file, key/value store, default
// Viper will check to see if an alias exists first
func (v *Viper) find(key string) interface{} {
	var val interface{}
	var exists bool

	// if the requested key is an alias, then return the proper key
	key = v.realKey(key)

	// PFlag Override first
	flag, exists := v.pflags[key]
	if exists && flag.HasChanged() {
		switch flag.ValueType() {
		case "int", "int8", "int16", "int32", "int64":
			return cast.ToInt(flag.ValueString())
		case "bool":
			return cast.ToBool(flag.ValueString())
		default:
			return flag.ValueString()
		}
	}

	val, exists = v.override[key]
	if exists {
		return val
	}

	if v.automaticEnvApplied {
		// even if it hasn't been registered, if automaticEnv is used,
		// check any Get request
		if val = v.getEnv(v.mergeWithEnvPrefix(key)); val != "" {
			return val
		}
	}

	envkey, exists := v.env[key]
	if exists {
		if val = v.getEnv(envkey); val != "" {
			return val
		}
	}

	val, exists = v.config[key]
	if exists {
		return val
	}

	// Test for nested config parameter
	if strings.Contains(key, v.keyDelim) {
		path := strings.Split(key, v.keyDelim)

		source := v.find(path[0])
		if source != nil {
			if reflect.TypeOf(source).Kind() == reflect.Map {
				val := v.searchMap(cast.ToStringMap(source), path[1:])
				return val
			}
		}
	}

	val, exists = v.kvstore[key]
	if exists {
		return val
	}

	val, exists = v.defaults[key]
	if exists {
		return val
	}

	return nil
}
Exemple #5
0
func (v *Viper) GetStringMap(key string) map[string]interface{} {
	return cast.ToStringMap(v.Get(key))
}
Exemple #6
0
func (v *Viper) Get(key string) interface{} {
	path := strings.Split(key, v.keyDelim)

	lcaseKey := strings.ToLower(key)
	val := v.find(lcaseKey)

	if val == nil {
		source := v.find(strings.ToLower(path[0]))
		if source != nil {
			if reflect.TypeOf(source).Kind() == reflect.Map {
				val = v.searchMap(cast.ToStringMap(source), path[1:])
			}
		}
	}

	// if no other value is returned and a flag does exist for the value,
	// get the flag's value even if the flag's value has not changed
	if val == nil {
		if flag, exists := v.pflags[lcaseKey]; exists {
			switch flag.ValueType() {
			case "int", "int8", "int16", "int32", "int64":
				val = cast.ToInt(flag.ValueString())
			case "bool":
				val = cast.ToBool(flag.ValueString())
			default:
				val = flag.ValueString()
			}
		}
	}

	if val == nil {
		return nil
	}

	var valType interface{}
	if !v.typeByDefValue {
		valType = val
	} else {
		defVal, defExists := v.defaults[lcaseKey]
		if defExists {
			valType = defVal
		} else {
			valType = val
		}
	}

	switch valType.(type) {
	case bool:
		return cast.ToBool(val)
	case string:
		return cast.ToString(val)
	case int64, int32, int16, int8, int:
		return cast.ToInt(val)
	case float64, float32:
		return cast.ToFloat64(val)
	case time.Time:
		return cast.ToTime(val)
	case time.Duration:
		return cast.ToDuration(val)
	case []string:
		return cast.ToStringSlice(val)
	}
	return val
}