mirror of https://github.com/hashicorp/consul
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
|
package discover
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"net/url"
|
||
|
|
"sort"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Config stores key/value pairs for the discovery
|
||
|
|
// functions to use.
|
||
|
|
type Config map[string]string
|
||
|
|
|
||
|
|
// Parse parses a "key=val key=val ..." string into
|
||
|
|
// a config map. Values are URL escaped.
|
||
|
|
func Parse(s string) (Config, error) {
|
||
|
|
s = strings.TrimSpace(s)
|
||
|
|
if s == "" {
|
||
|
|
return nil, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
c := Config{}
|
||
|
|
for _, v := range strings.Fields(s) {
|
||
|
|
p := strings.SplitN(v, "=", 2)
|
||
|
|
if len(p) != 2 {
|
||
|
|
return nil, fmt.Errorf("invalid format: %s", v)
|
||
|
|
}
|
||
|
|
key := p[0]
|
||
|
|
val, err := url.QueryUnescape(p[1])
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("invalid format: %s", v)
|
||
|
|
}
|
||
|
|
c[key] = val
|
||
|
|
}
|
||
|
|
return c, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// String formats a config map into the "key=val key=val ..."
|
||
|
|
// understood by Parse. The order of the keys is stable.
|
||
|
|
func (c Config) String() string {
|
||
|
|
// sort 'provider' to the front and keep the keys stable.
|
||
|
|
var keys []string
|
||
|
|
for k := range c {
|
||
|
|
if k != "provider" {
|
||
|
|
keys = append(keys, k)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
sort.Strings(keys)
|
||
|
|
keys = append([]string{"provider"}, keys...)
|
||
|
|
|
||
|
|
var vals []string
|
||
|
|
for _, k := range keys {
|
||
|
|
v := c[k]
|
||
|
|
if v == "" {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
v = k + "=" + url.QueryEscape(v)
|
||
|
|
vals = append(vals, v)
|
||
|
|
}
|
||
|
|
return strings.Join(vals, " ")
|
||
|
|
}
|