Parser of text/parameters

main.go

package main

import (
	"bufio"
	"fmt"
	"regexp"
	"strings"
)

// http://tools.ietf.org/html/draft-ietf-mmusic-rfc2326bis-40#page-297
func main() {
	foo := `duration: 83.124794
barparam
position: 14.467000
position
barparam   :barstuff
`

	scanner := bufio.NewScanner(strings.NewReader(foo))
	re := regexp.MustCompile("^(?:([!-9;-~]+)[ \t]*:)? *(.+)")

	for scanner.Scan() {
		fmt.Printf("%q\n", re.FindAllStringSubmatch(scanner.Text(), -1))
	}

}

// Result:
//   [["duration: 83.124794" "duration" "83.124794"]]
//   [["barparam" "" "barparam"]]
//   [["position: 14.467000" "position" "14.467000"]]
//   [["position" "" "position"]]
//   [["barparam   :barstuff" "barparam" "barstuff"]]