adding quickfix

quickfix/session_id.go

@@ -0,0 +1,56 @@
+// Copyright (c) quickfixengine.org  All rights reserved.
+//
+// This file may be distributed under the terms of the quickfixengine.org
+// license as defined by quickfixengine.org and appearing in the file
+// LICENSE included in the packaging of this file.
+//
+// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING
+// THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A
+// PARTICULAR PURPOSE.
+//
+// See http://www.quickfixengine.org/LICENSE for licensing information.
+//
+// Contact ask@quickfixengine.org if any conditions of this licensing
+// are not clear to you.
+
+package quickfix
+
+import "bytes"
+
+// SessionID is a unique identifier of a Session.
+type SessionID struct {
+	BeginString, TargetCompID, TargetSubID, TargetLocationID, SenderCompID, SenderSubID, SenderLocationID, Qualifier string
+}
+
+// IsFIXT returns true if the SessionID has a FIXT BeginString.
+func (s SessionID) IsFIXT() bool {
+	return s.BeginString == BeginStringFIXT11
+}
+
+func appendOptional(b *bytes.Buffer, delim, v string) {
+	if len(v) == 0 {
+		return
+	}
+
+	b.WriteString(delim)
+	b.WriteString(v)
+}
+
+func (s SessionID) String() string {
+	b := new(bytes.Buffer)
+	b.WriteString(s.BeginString)
+	b.WriteString(":")
+	b.WriteString(s.SenderCompID)
+
+	appendOptional(b, "/", s.SenderSubID)
+	appendOptional(b, "/", s.SenderLocationID)
+
+	b.WriteString("->")
+	b.WriteString(s.TargetCompID)
+
+	appendOptional(b, "/", s.TargetSubID)
+	appendOptional(b, "/", s.TargetLocationID)
+
+	appendOptional(b, ":", s.Qualifier)
+	return b.String()
+}