HTTP Headers for spf13/pflag
This package allows use of repeated CLI flags defining HTTP headers, like:
# Long format
mycommand --header "Accept: text/plain" --header "Authorization: bearer sometoken"
# Short format
mycommand -H "Accept: text/plain" -H "Authorization: bearer sometoken"
# Repeated headers are supported and combined
mycommand -H "X-Array-Header: value1" -H "X-Array-Header: value2"
# Will return a slice value with value1 and value2 for key X-Array-Header
# Headers are canonicalized
mycommand -H "content-type: application/json"
# Will have key Content-Type
package main
import (
"fmt"
"github.com/spf13/pflag"
"github.com/fgm/pflagheaders"
)
func main() {
// HeaderFlag provides a preconfigured default flag
h := pflagheaders.HeaderFlag()
pflag.Parse()
fmt.Printf("Headers:\n%s\n", h)
// The resulting http.Header is available after Parse:
fmt.Printf("Inner header:\n%#v\n", h.Header)
}
In projects using spf13/cobra
// In cmd/root.go
package cmd
import (
pfh "github.com/fgm/pflagheaders"
"github.com/spf13/cobra" // and others
)
var header = &pfh.Header{}
var rootCmd = &cobra.Command{
/* generated by Cobra */
Run: func(_ *cobra.Command, _ []string) { fmt.Println(header) }
}
func init() {
cobra.OnInitialize(initConfig) // Generated by Cobra
// ...other lines generated by Cobra
// You can use the provided constants, or use other values.
rootCmd.Flags().VarP(header, pfh.NameLong, pfh.NameShort, pfh.Help)
}