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useViper.go
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useViper.go
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package main
import (
"fmt"
"github.com/spf13/pflag"
"github.com/spf13/viper"
)
func aliasNormalizeFunc(f *pflag.FlagSet, n string) pflag.NormalizedName {
switch n {
case "pass":
n = "password"
break
case "ps":
n = "password"
break
}
return pflag.NormalizedName(n)
}
func main() {
pflag.StringP("name", "n", "Mike", "Name parameter")
pflag.StringP("password", "p", "hardToGuess", "Password")
pflag.CommandLine.SetNormalizeFunc(aliasNormalizeFunc)
pflag.Parse()
viper.BindPFlags(pflag.CommandLine)
name := viper.GetString("name")
password := viper.GetString("password")
fmt.Println(name, password)
// Reading an Environment variable
viper.BindEnv("GOMAXPROCS")
val := viper.Get("GOMAXPROCS")
if val != nil {
fmt.Println("GOMAXPROCS:", val)
}
// Setting an Environment variable
viper.Set("GOMAXPROCS", 16)
val = viper.Get("GOMAXPROCS")
fmt.Println("GOMAXPROCS:", val)
}