71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package ethutil
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"github.com/rakyll/globalconf"
|
|
"os"
|
|
)
|
|
|
|
// Config struct
|
|
type ConfigManager struct {
|
|
Db Database
|
|
|
|
ExecPath string
|
|
Debug bool
|
|
Diff bool
|
|
Paranoia bool
|
|
|
|
conf *globalconf.GlobalConf
|
|
}
|
|
|
|
var Config *ConfigManager
|
|
|
|
// Read config
|
|
//
|
|
// Initialize Config from Config File
|
|
func ReadConfig(ConfigFile string, Datadir string, EnvPrefix string) *ConfigManager {
|
|
if Config == nil {
|
|
// create ConfigFile if does not exist, otherwise globalconf panic when trying to persist flags
|
|
_, err := os.Stat(ConfigFile)
|
|
if err != nil && os.IsNotExist(err) {
|
|
fmt.Printf("config file '%s' doesn't exist, creating it\n", ConfigFile)
|
|
os.Create(ConfigFile)
|
|
}
|
|
g, err := globalconf.NewWithOptions(&globalconf.Options{
|
|
Filename: ConfigFile,
|
|
EnvPrefix: EnvPrefix,
|
|
})
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
} else {
|
|
g.ParseAll()
|
|
}
|
|
Config = &ConfigManager{ExecPath: Datadir, Debug: true, conf: g, Paranoia: true}
|
|
}
|
|
return Config
|
|
}
|
|
|
|
// provides persistence for flags
|
|
func (c *ConfigManager) Save(key string, value interface{}) {
|
|
f := &flag.Flag{Name: key, Value: newConfValue(value)}
|
|
c.conf.Set("", f)
|
|
}
|
|
|
|
func (c *ConfigManager) Delete(key string) {
|
|
c.conf.Delete("", key)
|
|
}
|
|
|
|
// private type implementing flag.Value
|
|
type confValue struct {
|
|
value string
|
|
}
|
|
|
|
// generic constructor to allow persising non-string values directly
|
|
func newConfValue(value interface{}) *confValue {
|
|
return &confValue{fmt.Sprintf("%v", value)}
|
|
}
|
|
|
|
func (self confValue) String() string { return self.value }
|
|
func (self confValue) Set(s string) error { self.value = s; return nil }
|