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Beego/config/config.go

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// Beego (http://beego.me/)
// @description beego is an open-source, high-performance web framework for the Go programming language.
// @link http://github.com/astaxie/beego for the canonical source repository
// @license http://github.com/astaxie/beego/blob/master/LICENSE
// @authors astaxie
package config
import (
"fmt"
)
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// ConfigContainer defines how to get and set value from configuration raw data.
type ConfigContainer interface {
Set(key, val string) error // support section::key type in given key when using ini type.
String(key string) string // support section::key type in key string when using ini and json type; Int,Int64,Bool,Float,DIY are same.
Strings(key string) []string //get string slice
Int(key string) (int, error)
Int64(key string) (int64, error)
Bool(key string) (bool, error)
Float(key string) (float64, error)
DIY(key string) (interface{}, error)
}
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// Config is the adapter interface for parsing config file to get raw data to ConfigContainer.
type Config interface {
Parse(key string) (ConfigContainer, error)
}
var adapters = make(map[string]Config)
// Register makes a config adapter available by the adapter name.
// If Register is called twice with the same name or if driver is nil,
// it panics.
func Register(name string, adapter Config) {
if adapter == nil {
panic("config: Register adapter is nil")
}
if _, dup := adapters[name]; dup {
panic("config: Register called twice for adapter " + name)
}
adapters[name] = adapter
}
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// adapterName is ini/json/xml/yaml.
// filename is the config file path.
func NewConfig(adapterName, fileaname string) (ConfigContainer, error) {
adapter, ok := adapters[adapterName]
if !ok {
return nil, fmt.Errorf("config: unknown adaptername %q (forgotten import?)", adapterName)
}
return adapter.Parse(fileaname)
}