registryurl: remove fallback code for go < 1.8

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

registryurl/parse.go

@@ -35,3 +35,13 @@ func Parse(registryURL string) (*url.URL, error) {
 	u.RawQuery = ""
 	return u, nil
 }
+
+// GetHostname returns the hostname of the URL
+func GetHostname(u *url.URL) string {
+	return u.Hostname()
+}
+
+// GetPort returns the port number of the URL
+func GetPort(u *url.URL) string {
+	return u.Port()
+}

registryurl/url_go18.go

@@ -1,17 +0,0 @@
-//+build go1.8
-
-package registryurl
-
-import (
-	url "net/url"
-)
-
-// GetHostname returns the hostname of the URL
-func GetHostname(u *url.URL) string {
-	return u.Hostname()
-}
-
-// GetPort returns the port number of the URL
-func GetPort(u *url.URL) string {
-	return u.Port()
-}

registryurl/url_non_go18.go

@@ -1,41 +0,0 @@
-//+build !go1.8
-
-package registryurl
-
-import (
-	url "net/url"
-	"strings"
-)
-
-func GetHostname(u *url.URL) string {
-	return stripPort(u.Host)
-}
-
-func GetPort(u *url.URL) string {
-	return portOnly(u.Host)
-}
-
-func stripPort(hostport string) string {
-	colon := strings.IndexByte(hostport, ':')
-	if colon == -1 {
-		return hostport
-	}
-	if i := strings.IndexByte(hostport, ']'); i != -1 {
-		return strings.TrimPrefix(hostport[:i], "[")
-	}
-	return hostport[:colon]
-}
-
-func portOnly(hostport string) string {
-	colon := strings.IndexByte(hostport, ':')
-	if colon == -1 {
-		return ""
-	}
-	if i := strings.Index(hostport, "]:"); i != -1 {
-		return hostport[i+len("]:"):]
-	}
-	if strings.Contains(hostport, "]") {
-		return ""
-	}
-	return hostport[colon+len(":"):]
-}