check telegram string

utils/telegram.go

@@ -0,0 +1,38 @@
+package utils
+
+import (
+	"log"
+	"regexp"
+	"strings"
+)
+
+const (
+	StartTag   = "ZCZC"
+	EndTag     = "NNNN"
+	Expression = "(?s)ZCZC.*NNNN"
+)
+
+var buffer []byte
+
+func Append(data []byte) {
+	buffer = append(buffer, data...)
+	if buffer[len(buffer)-1] == '\r' {
+		buffer = append(buffer, '\n')
+	}
+	check()
+}
+
+func check() {
+	teleString := string(buffer)
+	if strings.Index(teleString, EndTag) > 0 {
+		exp, _ := regexp.Compile(Expression)
+		telegram := exp.FindString(string(buffer))
+
+		if len(telegram) > 0 {
+			log.Println("telegram : ", telegram)
+			buffer = nil
+			//TODO save telegram
+		}
+	}
+
+}