feat: experimental gopher full-text search support

Closes: https://todo.sr.ht/~hedy/gelim/40

Author: hedyhli

client.go

@@ -448,7 +448,13 @@ func (c *Client) Input(u string, sensitive bool) (ok bool) {
 		c.style.ErrorMsg("Error reading input: " + err.Error())
 		return false
 	}
-	u = u + "?" + queryEscape(query)
+	if strings.HasPrefix(u, "gopher://") {
+		// Crude, but works because gopher URLs are fully formed when saved in
+		// c.links.
+		u = u + "%09" + queryEscape(query)
+	} else {
+		u = u + "?" + queryEscape(query)
+	}
 	return c.HandleURLWrapper(u)
 }
 
@@ -722,9 +728,10 @@ func (c *Client) HandleGopherParsedURL(parsed *url.URL) bool {
 
 	page.bodyBytes = bodyBytes
 
-	// TODO: check file extension
 	if res.gophertype == "1" {
 		page.mediaType = "gophermap"
+	} else if res.gophertype == "7" {
+		page.mediaType = "gophermap"
 	} else {
 		// Assume plain text for now
 		page.mediaType = "text/plain"

cmd.go

@@ -288,7 +288,7 @@ Examples:
 					continue
 				}
 				link, _ := c.GetLinkFromIndex(index)
-				fmt.Println(index, link) // TODO: also save the label in c.links
+				fmt.Println(index, link)
 			}
 		},
 		help: `[<index>...] : peek what a link index would link to, or see the list of all links

gelim.go

@@ -245,12 +245,12 @@ func main() {
 			c.style.ErrorMsg("No history yet, cannot use link indexing")
 			continue
 		}
-		u, spartanInput := c.GetLinkFromIndex(index)
+		u, isInput := c.GetLinkFromIndex(index)
 		if u == "" {
-			// TODO: When is this reached? Add message?
+			c.style.ErrorMsg("Empty URL for this input link!")
 			continue
 		}
-		if spartanInput {
+		if isInput {
 			c.Input(u, false)
 			continue
 		}

gopher.go

@@ -115,6 +115,8 @@ func (c *Client) ParseGophermap(page *Page) string {
 				} else {
 					link = fmt.Sprintf("gopher://%s:%s/h%s", host, port, path)
 				}
+			case "7":
+				c.inputLinks = append(c.inputLinks, len(c.links))
 			}
 			c.links = append(c.links, link)
 			gophertype := "(" + getGophertype(string(columns[0][0])) + ")"