Adds rudimentary support for telnet links

gopher/gopher.go

@@ -8,6 +8,8 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net"
+	"os"
+	"os/exec"
 	"strings"
 	"time"
 )
@@ -25,6 +27,7 @@ var types = map[string]string{
 	"3": "ERR",
 	"4": "BIN",
 	"5": "DOS",
+	"8": "TEL",
 	"s": "SND",
 	"g": "GIF",
 	"I": "IMG",
@@ -32,6 +35,7 @@ var types = map[string]string{
 	"7": "FTS",
 	"6": "UUE",
 	"p": "PNG",
+	"T": "TEL",
 }
 
 //------------------------------------------------\\
@@ -95,7 +99,15 @@ func Visit(addr, openhttp string) (View, error) {
 
 			return View{}, fmt.Errorf("")
 		}
-	} 
+	} else if u.Gophertype == "8" || u.Gophertype == "T" {
+		c := exec.Command("telnet", u.Host, u.Port)
+		c.Stdin = os.Stdin
+		c.Stdout = os.Stdout
+		c.Stderr = os.Stderr
+		fmt.Print("\033[2;1H")
+		c.Run()
+		return View{}, fmt.Errorf("Telnet session terminated")
+	}
 
 	text, err := Retrieve(u)
 	if err != nil {

gopher/url.go

@@ -31,7 +31,7 @@ type Url struct {
 // an error (or nil).
 func MakeUrl(u string) (Url, error) {
 	var out Url
-	re := regexp.MustCompile(`^((?P<scheme>gopher|http|https|ftp|telnet):\/\/)?(?P<host>[\w\-\.\d]+)(?::(?P<port>\d+)?)?(?:/(?P<type>[01345679gIhisp])?)?(?P<resource>.*)?$`)
+	re := regexp.MustCompile(`^((?P<scheme>gopher|http|https|ftp|telnet):\/\/)?(?P<host>[\w\-\.\d]+)(?::(?P<port>\d+)?)?(?:/(?P<type>[013456789gIhisTp])?)?(?P<resource>.*)?$`)
 	match := re.FindStringSubmatch(u)
 
 	if valid := re.MatchString(u); !valid {

main.go

@@ -164,6 +164,9 @@ func goToURL(u string) error {
 	v, err := gopher.Visit(u, options["openhttp"])
 	if err != nil {
 		quickMessage("Loading...", true)
+		if err.Error() == "Telnet session terminated" {
+			screen.ReflashScreen(true)
+		}
 		return err
 	}
 	quickMessage("Loading...", true)
@@ -194,6 +197,9 @@ func goToLink(l string) error {
 			v, err := gopher.Visit(linkurl, options["openhttp"])
 			if err != nil {
 				quickMessage("Loading...", true)
+				if err.Error() == "Telnet session terminated" {
+					screen.ReflashScreen(true)
+				}
 				return err
 			}
 			quickMessage("Loading...", true)