initial commit

protocol/plane_info_response.go

@@ -0,0 +1,88 @@
+package protocol
+
+import (
+	"fmt"
+	"strings"
+)
+
+type PlaneInfoResponsePDU struct {
+	From      string `validate:"required,alphanum,max=7"`
+	To        string `validate:"required,alphanum,max=7"`
+	Equipment string `validate:"required,max=32"`
+	Airline   string `validate:"max=32"`
+	Livery    string `validate:"max=32"`
+	CSL       string `validate:"max=32"`
+}
+
+func (p *PlaneInfoResponsePDU) Serialize() string {
+	str := fmt.Sprintf("#SB%s:%s:PI:GEN:EQUIPMENT=%s", p.From, p.To, p.Equipment)
+	if p.Airline != "" {
+		str += fmt.Sprintf(":AIRLINE=%s", p.Airline)
+	}
+	if p.Livery != "" {
+		str += fmt.Sprintf(":LIVERY=%s", p.Livery)
+	}
+	if p.CSL != "" {
+		str += fmt.Sprintf(":CSL=%s", p.CSL)
+	}
+
+	str += PacketDelimeter
+	return str
+}
+
+func ParsePlaneInfoResponsePDU(rawPacket string) (*PlaneInfoResponsePDU, error) {
+	rawPacket = strings.TrimSuffix(rawPacket, PacketDelimeter)
+	rawPacket = strings.TrimPrefix(rawPacket, "#SB")
+	fields := strings.Split(rawPacket, Delimeter)
+	if len(fields) < 5 || len(fields) > 8 {
+		return nil, NewGenericFSDError(SyntaxError)
+	}
+
+	if fields[2] != "PI" || fields[3] != "GEN" {
+		return nil, NewGenericFSDError(SyntaxError)
+	}
+
+	var equipment, airline, livery, csl string
+
+	if !strings.HasPrefix(fields[4], "EQUIPMENT=") || len(fields[4]) < len("EQUIPMENT=")+1 {
+		return nil, NewGenericFSDError(SyntaxError)
+	}
+	equipment = strings.SplitN(fields[4], "=", 2)[1]
+
+	if len(fields) > 5 {
+		if !strings.HasPrefix(fields[5], "AIRLINE=") || len(fields[5]) < len("AIRLINE=")+1 {
+			return nil, NewGenericFSDError(SyntaxError)
+		}
+		airline = strings.SplitN(fields[5], "=", 2)[1]
+	}
+
+	if len(fields) > 6 {
+		if !strings.HasPrefix(fields[6], "LIVERY=") || len(fields[6]) < len("LIVERY=")+1 {
+			return nil, NewGenericFSDError(SyntaxError)
+		}
+		livery = strings.SplitN(fields[6], "=", 2)[1]
+	}
+
+	if len(fields) > 7 {
+		if !strings.HasPrefix(fields[7], "CSL=") || len(fields[6]) < len("CSL=")+1 {
+			return nil, NewGenericFSDError(SyntaxError)
+		}
+		csl = strings.SplitN(fields[7], "=", 2)[1]
+	}
+
+	pdu := &PlaneInfoResponsePDU{
+		From:      fields[0],
+		To:        fields[1],
+		Equipment: equipment,
+		Airline:   airline,
+		Livery:    livery,
+		CSL:       csl,
+	}
+
+	err := V.Struct(pdu)
+	if err != nil {
+		return nil, NewGenericFSDError(SyntaxError)
+	}
+
+	return pdu, nil
+}