Usage

Your code:

package mainimport ("fmt""github.com/nadoo/conflag")varconfstruct {NamestringAgeintMalebool}funcmain() {// get a new conflag instanceflag:=conflag.New()// setup flags as the standard flag packageflag.StringVar(&conf.Name,"name","","your name")flag.IntVar(&conf.Age,"age",0,"your age")flag.BoolVar(&conf.Male,"male",false,"your sex")// parse before access flagsflag.Parse()// now you're able to get the parsed flag valuesfmt.Printf("  Name: %s\n",conf.Name)fmt.Printf("  Age: %d\n",conf.Age)fmt.Printf("  Male: %v\n",conf.Male)}

Run without config file:

example -name Jay -age 30

  Name: Jay  Age: 30  Male:false

Run with config file and environment variable(-config):

name={$NAME}age=20male

NAME=Jason example -config example.conf

  Name: Jason  Age: 20  Male:true

Run with config file and OVERRIDE a flag value using commandline:

name=Jasonage=20male

example -config example.conf -name Michael

  Name: Michael  Age: 20  Male:true

Config File

## config file# comment line starts with "#"# format:#KEY=VALUE,# just use the command line flag name as key name# use {$ENV_VAR_NAME} in VALUE to get the Environment Variable value# your namename={$NAME}# your ageage=20# are you male?male=true# use include to include more config filesinclude=part1.inc.confinclude=part2.inc.conf