Join a map of strings

gistfile1.txt

package main

import (
	"fmt"
	"strings"
)

type stringsBuilder struct {
	strings.Builder
	kv    map[string]string
	midle string
	right string
}

func NewStringsBuilder() *stringsBuilder {
	return &stringsBuilder{}
}

func (sb *stringsBuilder) SetMap(kv map[string]string) {
	sb.kv = kv
}
func (sb *stringsBuilder) SetJoiners(midle, right string) {
	sb.midle = midle
	sb.right = right
}
func (sb *stringsBuilder) join(kv map[string]string, midle, right string) string {
	sb.kv = kv
	sb.midle = midle
	sb.right = right
	return sb.String()
}
func (sb *stringsBuilder) Join(kv map[string]string) string {
	return sb.join(kv, "=", "&")
}

func (sb *stringsBuilder) String() string {
	b := sb.Builder
	for k, v := range sb.kv {
		b.WriteString(k)
		b.WriteString(sb.midle)
		b.WriteString(v)
		b.WriteString(sb.right)
	}
	s := b.String()
	if len(s) < 1 {
		return ""
	}
	return strings.TrimRight(s, sb.right)
}

func main() {
	opt := make(map[string]string)
	opt["name"] = "Aname"
	opt["surname"] = "Asurname"

	opts := NewStringsBuilder().Join(opt)
	fmt.Println(opts)

}