stripping emojis, starting to isolate text logic / decoupling

core/messages.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"regexp"
 	"strings"
 	"time"
 
@@ -35,6 +36,27 @@ func maxString(s string, max int) string {
 	return s
 }
 
+func stripEmoji(msg string) string {
+	re := regexp.MustCompile(`:\w+:`)
+	match := re.FindAll([]byte(msg), -1)
+	if len(match) > 0 {
+		s := msg
+		for i := range match {
+			s = strings.Replace(s, string(match[i]), "", -1)
+		}
+		return s
+	} else {
+		return msg
+	}
+}
+
+func prepareTTSMessage(msg string) string {
+	t1 := maxString(msg, 300)
+	t2 := stripEmoji(t1)
+	t3 := removeCharacters(t2, "-\"'`$();:.\\")
+	return strings.Trim(t3, " ")
+}
+
 func createAudio(msg string) ([]byte, error, string) {
 	curr_time := time.Now().Unix()
 	var filename string = fmt.Sprintf("/tmp/%d.mp3", curr_time)
@@ -72,7 +94,8 @@ func MessageAudio(s *discordgo.Session, m *discordgo.MessageCreate) {
 	var prefix string = "/gogodisco audio"
 	if strings.HasPrefix(m.Content, prefix) {
 		var message string = strings.TrimPrefix(m.Content, prefix)
-		_, _, filename := createAudio(removeCharacters(message, "-\"'`$();:."))
+		var cleanMessage string = prepareTTSMessage(message)
+		_, _, filename := createAudio(cleanMessage)
 		file, _ := os.Open(filename)
 		s.ChannelFileSend(m.ChannelID, filename, file)
 	}