initial commit

go.mod

@@ -0,0 +1,10 @@
+module sendosc
+
+go 1.23.1
+
+require github.com/spf13/cobra v1.8.1
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+)

go.sum

@@ -0,0 +1,10 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
+github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

sendosc.go

@@ -0,0 +1,204 @@
+package main
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+type OSCArg struct {
+	Type  string
+	Value any
+}
+
+type OSCMessage struct {
+	Address string
+	Args    []OSCArg
+}
+
+func stringToBuffer(rawString string) []byte {
+	var sb strings.Builder
+
+	sb.WriteString(rawString)
+	sb.WriteString("\u0000")
+
+	padLength := 4 - (len(sb.String()) % 4)
+	if padLength < 4 {
+		for i := 0; i < padLength; i++ {
+			sb.WriteString("\u0000")
+		}
+	}
+
+	return []byte(sb.String())
+}
+
+func integerToBuffer(number int32) []byte {
+	var buf bytes.Buffer
+	err := binary.Write(&buf, binary.BigEndian, number)
+	if err != nil {
+		fmt.Println("binary.Write failed:", err)
+	}
+	return buf.Bytes()
+}
+
+func floatToBuffer(number float32) []byte {
+	var buf bytes.Buffer
+	err := binary.Write(&buf, binary.BigEndian, number)
+	if err != nil {
+		fmt.Println("binary.Write failed:", err)
+	}
+	return buf.Bytes()
+}
+
+func argsToBuffer(args []OSCArg) []byte {
+	var argBuffers = []byte{}
+
+	for _, arg := range args {
+		switch oscType := arg.Type; oscType {
+		case "s":
+			if value, ok := arg.Value.(string); ok {
+				argBuffers = append(argBuffers, stringToBuffer(value)...)
+			} else {
+				fmt.Println("OSC arg had string type but non-string value.")
+			}
+		case "i":
+			if value, ok := arg.Value.(int32); ok {
+				argBuffers = append(argBuffers, integerToBuffer(value)...)
+			} else {
+				fmt.Println("OSC arg had integer type but non-integer value.")
+			}
+		case "f":
+			if value, ok := arg.Value.(float32); ok {
+				argBuffers = append(argBuffers, floatToBuffer(value)...)
+			} else {
+				fmt.Println("OSC arg had float type but non-float value.")
+			}
+		default:
+			fmt.Print("unhandled osc type: ")
+			fmt.Printf("%s.\n", oscType)
+		}
+	}
+	return argBuffers
+}
+
+func messageToBuffer(message OSCMessage) []byte {
+	oscBuffer := []byte{}
+
+	oscBuffer = append(oscBuffer, stringToBuffer(message.Address)...)
+
+	var sb strings.Builder
+
+	sb.WriteString(",")
+
+	for _, arg := range message.Args {
+		sb.WriteString(arg.Type)
+	}
+
+	oscBuffer = append(oscBuffer, stringToBuffer(sb.String())...)
+	oscBuffer = append(oscBuffer, argsToBuffer(message.Args)...)
+
+	return oscBuffer
+}
+
+func main() {
+	var Host string
+	var Port int32
+	var Address string
+	var Args []string
+	var Types []string
+
+	var rootCmd = &cobra.Command{
+		Use: "sendosc",
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Println(Host)
+			fmt.Println(Port)
+			fmt.Println(Address)
+			fmt.Println(Args)
+			send(Host, Port, Address, Args, Types)
+		},
+	}
+	rootCmd.Flags().StringVar(&Host, "host", "", "host to send OSC message to")
+	rootCmd.Flags().Int32Var(&Port, "port", 9999, "port to send OSC message to")
+	rootCmd.Flags().StringVar(&Address, "address", "", "OSC address")
+	rootCmd.Flags().StringArrayVar(&Args, "arg", []string{}, "OSC args")
+	rootCmd.Flags().StringArrayVar(&Types, "type", []string{}, "OSC types")
+	rootCmd.MarkFlagRequired("host")
+	rootCmd.MarkFlagRequired("port")
+	rootCmd.MarkFlagRequired("address")
+	rootCmd.Execute()
+}
+
+func argToTypedArg(rawArg string, oscType string) OSCArg {
+	switch oscType {
+	case "s":
+		return OSCArg{
+			Type:  "s",
+			Value: rawArg,
+		}
+	case "i":
+		number, err := strconv.ParseInt(rawArg, 10, 32)
+		if err != nil {
+			// ... handle error
+			panic(err)
+		}
+		return OSCArg{
+			Type:  "i",
+			Value: int32(number),
+		}
+	case "f":
+		number, err := strconv.ParseFloat(rawArg, 32)
+		if err != nil {
+			// ... handle error
+			panic(err)
+		}
+		return OSCArg{
+			Type:  "f",
+			Value: float32(number),
+		}
+	default:
+		fmt.Print("unhandled osc type: ")
+		fmt.Printf("%s.\n", oscType)
+		return OSCArg{}
+	}
+}
+
+func send(host string, port int32, address string, args []string, types []string) {
+
+	oscArgs := []OSCArg{}
+
+	for index, arg := range args {
+		oscType := "s"
+		if len(types) > index {
+			oscType = types[index]
+		}
+
+		oscArgs = append(oscArgs, argToTypedArg(arg, oscType))
+	}
+	fmt.Println(oscArgs)
+
+	oscMessage := OSCMessage{
+		Address: address,
+		Args:    oscArgs,
+	}
+
+	oscMessageBuffer := messageToBuffer(oscMessage)
+
+	netAddress := fmt.Sprintf("%s:%d", host, port)
+	conn, err := net.Dial("udp", netAddress)
+	if err != nil {
+		fmt.Printf("Dial err %v", err)
+		os.Exit(-1)
+	}
+	defer conn.Close()
+
+	if _, err = conn.Write([]byte(oscMessageBuffer)); err != nil {
+		fmt.Printf("Write err %v", err)
+		os.Exit(-1)
+	}
+}