support old chat format system which based on §

chat/chatMsg.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"regexp"
 	"strings"
 
 	"github.com/Tnze/go-mc/data"
@@ -48,29 +49,54 @@ func (m *Message) Decode(r pk.DecodeReader) error {
 	return json.NewDecoder(io.LimitReader(r, int64(Len))).Decode(m)
 }
 
-var colors = map[string]int{
+var fmtCode = map[byte]string{
-	"black":        30,
+	'0': "30",
-	"dark_blue":    34,
+	'1': "34",
-	"dark_green":   32,
+	'2': "32",
-	"dark_aqua":    36,
+	'3': "36",
-	"dark_red":     31,
+	'4': "31",
-	"dark_purple":  35,
+	'5': "35",
-	"gold":         33,
+	'6': "33",
-	"gray":         37,
+	'7': "37",
-	"dark_gray":    90,
+	'8': "90",
-	"blue":         94,
+	'9': "94",
-	"green":        92,
+	'a': "92",
-	"aqua":         96,
+	'b': "96",
-	"red":          91,
+	'c': "91",
-	"light_purple": 95,
+	'd': "95",
-	"yellow":       93,
+	'e': "93",
-	"white":        97,
+	'f': "97",
+
+	// 'k':"",	//random
+	'l': "1",
+	'm': "9",
+	'n': "4",
+	'o': "3",
+	'r': "0",
+}
+var colors = map[string]string{
+	"black":        "30",
+	"dark_blue":    "34",
+	"dark_green":   "32",
+	"dark_aqua":    "36",
+	"dark_red":     "31",
+	"dark_purple":  "35",
+	"gold":         "33",
+	"gray":         "37",
+	"dark_gray":    "90",
+	"blue":         "94",
+	"green":        "92",
+	"aqua":         "96",
+	"red":          "91",
+	"light_purple": "95",
+	"yellow":       "93",
+	"white":        "97",
 }
 
 // ClearString return the message without escape sequence for ansi color.
 func (m Message) ClearString() string {
 	var msg strings.Builder
-	msg.WriteString(m.Text)
+	msg.WriteString(transf(m.Text, false))
 
 	//handle translate
 	if m.Translate != "" {
@@ -110,12 +136,12 @@ func (m Message) String() string {
 		format.WriteString("9;")
 	}
 	if m.Color != "" {
-		fmt.Fprintf(&format, "%d;", colors[m.Color])
+		format.WriteString(colors[m.Color] + ";")
 	}
 	if format.Len() > 0 {
 		msg.WriteString("\033[" + format.String()[:format.Len()-1] + "m")
 	}
-	msg.WriteString(m.Text)
+	msg.WriteString(transf(m.Text, true))
 
 	//handle translate
 	if m.Translate != "" {
@@ -140,3 +166,21 @@ func (m Message) String() string {
 	}
 	return msg.String()
 }
+
+var fmtPat = regexp.MustCompile("§[0-9A-FK-OR]")
+
+func transf(str string, ansi bool) string {
+	return fmtPat.ReplaceAllStringFunc(
+		str,
+		func(str string) string {
+			f, ok := fmtCode[str[2]]
+			if ok {
+				if ansi {
+					return "\033[" + f + "m" // enable, add ANSI code
+				}
+				return "" //disable, remove the § code
+			}
+			return str //not a § code
+		},
+	)
+}

chat/chatMsg_test.go

@@ -26,6 +26,9 @@ var jsons = []string{
 	`{"translate":"translation.test.escape","with":["str1","str2"]}`,
 	`{"translate":"translation.test.args","with":["str1","str2"]}`,
 	`{"translate":"translation.test.world"}`,
+
+	`"Tnze"`,
+	`"§0Tnze"`,
 }
 
 var texts = []string{
@@ -37,6 +40,9 @@ var texts = []string{
 	"%s %str1 %%s %%str2",
 	"str1 str2",
 	"world",
+
+	"Tnze",
+	"\033[30mTnze",
 }
 
 var ctexts = []string{
@@ -48,6 +54,9 @@ var ctexts = []string{
 	"%s %str1 %%s %%str2",
 	"str1 str2",
 	"world",
+
+	"Tnze",
+	"Tnze",
 }
 
 func TestChatMsgFormatString(t *testing.T) {