2019. február 26., kedd 10:46:44 UTC+1 időpontban Natxo Asenjo a következőt
írta:
>
> hi,
>
> I am writing a script that accepts arguments and flags (using kingpin) but
> am failing miserably so far. One of the arguments is a file name, which
> should be then loaded by an ini library (file is in ini format).
>
> If I hard code the file name in the script, it works, but
>
> Code:
>
> =====================start ====================================
> package main
>
> import (
> "fmt"
> "gopkg.in/alecthomas/kingpin.v2"
> "gopkg.in/ini.v1"
> "os"
> )
>
> var (
> config = kingpin.Flag("config", "configuration
> file").Short('c').Required().ExistingFile()
> url, api, user, pwd = parse_config()
> )
>
> func init() {
> kingpin.Parse()
> }
>
> func main() {
> fmt.Println("yay")
> }
>
> func parse_config() (string, string, string, string) {
> //cfg, err := ini.Load("api.conf")
> fmt.Printf("%v, %s, %T\n", config, config, config)
> cfg, err := ini.Load(config)
> if err != nil {
> fmt.Println(err)
> os.Exit(1)
> }
>
> url := cfg.Section("").Key("url").String()
> api := cfg.Section("").Key("api").String()
> user := cfg.Section("").Key("user").String()
> pwd := cfg.Section("").Key("password").String()
>
> return url, api, user, pwd
> }
>
> =====================end====================================
> and when running it:
>
> $ go run yetanother.go --config api.conf
> 0xc0000547e0, %!s(*string=0xc0000547e0), *string
> error parsing data source: unknown type '%!s(*string=0xc00008ceb0)'
> exit status 1
>
> This must be pretty basic, but I'm stuck :(
>
> Any tips welcome.
>
> Thanks in advance.
>
> --
> regards,
> Natxo
>
>
>
https://godoc.org/gopkg.in/alecthomas/kingpin.v2#FlagClause.ExistingFile
returns a *string (a pointer to a string),
https://godoc.org/gopkg.in/ini.v1#Load wants a string - so dereference it:
cfg, err := ini.Load(*config)
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