add ban chat command

common/mhfcid/mhfcid.go

@@ -0,0 +1,54 @@
+package mhfcid
+
+import (
+	"math"
+)
+
+// ConvertCID converts a MHF Character ID String to integer
+//
+// Banned characters: 0, I, O, S
+func ConvertCID(ID string) (r uint32) {
+	if len(ID) != 6 {
+		return
+	}
+
+	m := map[rune]uint32{
+		'1': 0,
+		'2': 1,
+		'3': 2,
+		'4': 3,
+		'5': 4,
+		'6': 5,
+		'7': 6,
+		'8': 7,
+		'9': 8,
+		'A': 9,
+		'B': 10,
+		'C': 11,
+		'D': 12,
+		'E': 13,
+		'F': 14,
+		'G': 15,
+		'H': 16,
+		'J': 17,
+		'K': 18,
+		'L': 19,
+		'M': 20,
+		'N': 21,
+		'P': 22,
+		'Q': 23,
+		'R': 24,
+		'T': 25,
+		'U': 26,
+		'V': 27,
+		'W': 28,
+		'X': 29,
+		'Y': 30,
+		'Z': 31,
+	}
+
+	for i, c := range ID {
+		r += m[c] * uint32(math.Pow(32, float64(i)))
+	}
+	return
+}