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