change to btc.TryParseOPReturn

bchain/coins/monacoin/monacoinparser.go

@@ -3,7 +3,6 @@ package monacoin
 import (
 	"blockbook/bchain"
 	"blockbook/bchain/coins/btc"
-	"encoding/hex"
 
 	"github.com/btcsuite/btcd/wire"
 	"github.com/jakm/btcutil/chaincfg"
@@ -137,7 +136,7 @@ func (p *MonacoinParser) outputScriptToAddresses(script []byte) ([]string, bool,
 		if sc != txscript.NonStandardTy && sc != txscript.NullDataTy {
 			s = true
 		} else if len(rv) == 0 {
-			or := TryParseOPReturn(script)
+			or := btc.TryParseOPReturn(script)
 			if or != "" {
 				rv = []string{or}
 			}
@@ -156,7 +155,7 @@ func (p *MonacoinParser) outputScriptToAddresses(script []byte) ([]string, bool,
 		if sc != txscript.NonStandardTy && sc != txscript.NullDataTy {
 			s = true
 		} else if len(rv) == 0 {
-			or := TryParseOPReturn(script)
+			or := btc.TryParseOPReturn(script)
 			if or != "" {
 				rv = []string{or}
 			}
@@ -164,43 +163,3 @@ func (p *MonacoinParser) outputScriptToAddresses(script []byte) ([]string, bool,
 		return rv, s, nil
 	}
 }
-
-// TryParseOPReturn tries to process OP_RETURN script and return its string representation
-func TryParseOPReturn(script []byte) string {
-	if len(script) > 1 && script[0] == txscript.OP_RETURN {
-		// trying 2 variants of OP_RETURN data
-		// 1) OP_RETURN OP_PUSHDATA1 <datalen> <data>
-		// 2) OP_RETURN <datalen> <data>
-		var data []byte
-		var l int
-		if script[1] == txscript.OP_PUSHDATA1 && len(script) > 2 {
-			l = int(script[2])
-			data = script[3:]
-			if l != len(data) {
-				l = int(script[1])
-				data = script[2:]
-			}
-		} else {
-			l = int(script[1])
-			data = script[2:]
-		}
-		if l == len(data) {
-			isASCII := true
-			for _, c := range data {
-				if c < 32 || c > 127 {
-					isASCII = false
-					break
-				}
-			}
-			var ed string
-			if isASCII {
-				ed = "(" + string(data) + ")"
-			} else {
-				ed = hex.EncodeToString(data)
-			}
-			return "OP_RETURN " + ed
-		}
-	}
-	return ""
-}
-