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cli-args.go
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/
cli-args.go
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package config
import (
"bytes"
"flag"
"strings"
)
// Parse command line arguments, based on existing config keys.
func (c *Config) Flag() *Config {
keys := getKeys(c.Root)
hash := map[string]*string{}
for _, key := range keys {
k := strings.Join(key, "-")
hash[k] = new(string)
val, _ := c.String(k)
flag.StringVar(hash[k], k, val, "")
}
flag.Parse()
flag.Visit(func(f *flag.Flag) {
name := strings.Replace(f.Name, "-", ".", -1)
c.Set(name, f.Value.String())
})
return c
}
// Args command line arguments, based on existing config keys.
func (c *Config) Args(args ...string) *Config {
if len(args) <= 1 {
return c
}
keys := getKeys(c.Root)
hash := map[string]*string{}
_flag := flag.NewFlagSet(args[0], flag.ContinueOnError)
var _err bytes.Buffer
_flag.SetOutput(&_err)
for _, key := range keys {
k := strings.Join(key, "-")
hash[k] = new(string)
val, _ := c.String(k)
_flag.StringVar(hash[k], k, val, "")
}
c.lastErr = _flag.Parse(args[1:])
_flag.Visit(func(f *flag.Flag) {
name := strings.Replace(f.Name, "-", ".", -1)
c.Set(name, f.Value.String())
})
return c
}