bring in sendosc and convert to npm workspaces

apps/sendosc/src/main.js

@@ -0,0 +1,61 @@
+#!/usr/bin/env node
+
+const { Option, program } = require('commander');
+const dgram = require('dgram');
+const net = require('net');
+const slip = require('slip');
+const osc = require('./osc');
+const packageInfo = require('../package.json');
+
+program.name(packageInfo.name);
+program.version(packageInfo.version);
+program.description('simple util to sendosc');
+program.addOption(new Option('--protocol <protocol>', 'Network protocol').choices(['tcp', 'udp']).default('udp'));
+program.addOption(new Option('--host <host>', 'the host to send osc to').makeOptionMandatory());
+program.addOption(new Option('--port <port>', 'the port to send osc to').makeOptionMandatory());
+program.addOption(new Option('--address <address>', 'OSC address').makeOptionMandatory());
+program.addOption(new Option('--args <args...>', 'osc args').default([]));
+program.addOption(new Option('--slip', 'slip encode message').default(false));
+program.addOption(new Option('--types <types...>', 'osc arg types').choices(['s', 'i', 'f', 'b']).default([]));
+program.action((options) => {
+  const { host, port, address, args, types } = options;
+
+  const typedArgs = args?.map((rawArg, index) => {
+    const argType = types[index] || 's';
+
+    return {
+      type: argType,
+      value: osc.argToTypedArg(rawArg, argType),
+    };
+  });
+
+  let oscMsgBuffer = osc.toBuffer({
+    address,
+    args: typedArgs,
+  });
+
+  if (options.slip) {
+    oscMsgBuffer = slip.encode(oscMsgBuffer);
+  }
+
+  if (options.protocol === 'tcp') {
+    const client = net.Socket();
+    client.on('error', (error) => {
+      console.error(error);
+    });
+    client.connect(port, host, () => {
+      client.write(oscMsgBuffer, () => {
+        client.destroy();
+      });
+    });
+  } else if (options.protocol === 'udp') {
+    const client = dgram.createSocket('udp4');
+    client.send(oscMsgBuffer, port, host, (error) => {
+      if (error) {
+        console.error(error);
+      }
+      client.close();
+    });
+  }
+});
+program.parse();

apps/sendosc/src/osc.js

@@ -0,0 +1,83 @@
+const oscTypeConverterMap = {
+  s: {
+    toBuffer: (string) => {
+      let oscString = `${string}\u0000`;
+      const padSize = 4 - (oscString.length % 4);
+      if (padSize < 4) {
+        oscString = oscString.padEnd(oscString.length + padSize, '\u0000');
+      }
+      return Buffer.from(oscString, 'ascii');
+    },
+    fromString: (string) => string,
+  },
+  f: {
+    toBuffer: (number) => {
+      const buffer = Buffer.alloc(4);
+      buffer.writeFloatBE(number);
+      return buffer;
+    },
+    fromString: (string) => Number.parseFloat(string),
+  },
+  i: {
+    toBuffer: (number) => {
+      const buffer = Buffer.alloc(4);
+      buffer.writeInt32BE(number);
+      return buffer;
+    },
+    fromString: (string) => Number.parseInt(string, 10),
+  },
+  b: {
+    toBuffer: (data) => {
+      const sizeBuffer = oscTypeConverterMap.i.toBuffer(data.length);
+      const padSize = 4 - (data.length % 4);
+      const padBuffer = Buffer.from(Array(padSize).fill(0));
+      return Buffer.concat([sizeBuffer, data, padBuffer]);
+    },
+    fromString: (string) => Buffer.from(string, 'hex'),
+  },
+};
+
+function argsToBuffer(args) {
+  const argBuffers = [];
+
+  for (let index = 0; index < args.length; index += 1) {
+    const arg = args[index];
+    const typeConverter = oscTypeConverterMap[arg.type];
+    if (typeConverter === undefined) {
+      throw new Error('osc type error: unknown type '.concat(arg.type));
+    }
+
+    if (typeConverter.fromString === undefined) {
+      throw new Error('osc type error: no string converter for type '.concat(arg.type));
+    }
+
+    argBuffers.push(typeConverter.toBuffer(arg.value));
+  }
+  return Buffer.concat(argBuffers);
+}
+
+function toBuffer({ address, args }) {
+  const addressBuffer = oscTypeConverterMap.s.toBuffer(address);
+  const typeString = args.map((arg) => arg.type).join('');
+  const typesBuffer = oscTypeConverterMap.s.toBuffer(`,${typeString}`);
+  const argsBuffer = argsToBuffer(args);
+  return Buffer.concat([addressBuffer, typesBuffer, argsBuffer]);
+}
+
+function argToTypedArg(rawArg, type = 's') {
+  const typeConverter = oscTypeConverterMap[type];
+  if (typeConverter === undefined) {
+    throw new Error('osc type error: unknown type '.concat(type));
+  }
+
+  if (typeConverter.fromString === undefined) {
+    throw new Error('osc type error: no string converter for type '.concat(type));
+  }
+
+  return typeConverter.fromString(rawArg);
+}
+
+module.exports = {
+  toBuffer,
+  argToTypedArg,
+};