initial commit

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+# These are supported funding model platforms
+github: [jwetzell]

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'weekly'

.github/workflows/check-build.yml

@@ -0,0 +1,23 @@
+name: Check osc-js builds
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  build-webui:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      - name: Set up Node.js
+        uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
+        with:
+          node-version-file: '.nvmrc'
+          cache: 'npm'
+          cache-dependency-path: 'package-lock.json'
+
+      - name: Install Node.js dependencies
+        run: npm ci
+
+      - run: npm run build

.github/workflows/publish-npm.yml

@@ -0,0 +1,24 @@
+name: Publish to npmjs
+on:
+  release:
+jobs:
+  publish-lib:
+    permissions:
+      id-token: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+      - uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
+        with:
+          node-version-file: '.nvmrc'
+          registry-url: 'https://registry.npmjs.org'
+          cache: 'npm'
+          cache-dependency-path: 'package-lock.json'
+
+      - name: Install Node.js dependencies
+        run: npm ci
+
+      - name: Publish to NPM
+        run: npm publish --provenance --access=public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+dist

.nvmrc

@@ -0,0 +1 @@
+v20.15.1

.prettierignore

@@ -0,0 +1,2 @@
+*.md
+*.min.*

.prettierrc.js

@@ -0,0 +1,8 @@
+module.exports = {
+  trailingComma: 'es5',
+  tabWidth: 2,
+  semi: true,
+  singleQuote: true,
+  bracketSameLine: true,
+  printWidth: 120,
+};

package-lock.json

@@ -0,0 +1,562 @@
+{
+  "name": "@jwetzell/osc",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@jwetzell/osc",
+      "version": "0.1.0",
+      "license": "ISC",
+      "devDependencies": {
+        "@types/node": "22.5.5",
+        "prettier": "3.3.3",
+        "rimraf": "6.0.1",
+        "typescript": "5.6.2"
+      }
+    },
+    "node_modules/@isaacs/cliui": {
+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
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+      "dev": true,
+      "dependencies": {
+        "string-width": "^5.1.2",
+        "string-width-cjs": "npm:string-width@^4.2.0",
+        "strip-ansi": "^7.0.1",
+        "strip-ansi-cjs": "npm:strip-ansi@^6.0.1",
+        "wrap-ansi": "^8.1.0",
+        "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0"
+      },
+      "engines": {
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+      }
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+      "dev": true,
+      "optional": true,
+      "engines": {
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+      }
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+      "dev": true,
+      "dependencies": {
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+      }
+    },
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+      "dev": true,
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+      },
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+      }
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+}

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "@jwetzell/osc",
+  "version": "0.1.0",
+  "description": "",
+  "main": "dist/index.js",
+  "types": "dist/index.d.js",
+  "scripts": {
+    "prebuild": "rimraf dist",
+    "build": "tsc",
+    "prepublishOnly": "npm run build"
+  },
+  "files": [
+    "dist"
+  ],
+  "author": {
+    "name": "Joel Wetzell",
+    "email": "me@jwetzell.com",
+    "url": "https://jwetzell.com"
+  },
+  "repository": "https://github.com/jwetzell/osc-js",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/node": "22.5.5",
+    "prettier": "3.3.3",
+    "rimraf": "6.0.1",
+    "typescript": "5.6.2"
+  }
+}

src/index.ts

@@ -0,0 +1,2 @@
+export * from './osc';
+export * from './models';

src/models.ts

@@ -0,0 +1,15 @@
+export type OSCType = 's' | 'i' | 'f' | 'b';
+export type OSCArg = {
+  type: OSCType;
+  value: string | number | Buffer;
+};
+
+export type OSCMessage = {
+  address: string;
+  args: OSCArg[];
+};
+
+export type OSCTypeConverter = {
+  toBuffer: (value: number | string | Buffer) => Buffer | undefined;
+  fromString: (string: string) => number | string | Buffer;
+};

src/osc.ts

@@ -0,0 +1,109 @@
+import { OSCType, OSCArg, OSCMessage, OSCTypeConverter } from './models';
+
+const oscTypeConverterMap: { [key in OSCType]: OSCTypeConverter } = {
+  s: {
+    toBuffer: (string) => {
+      if (typeof string === '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');
+      }
+      throw new Error('osc type s toBuffer called with non string value');
+    },
+    fromString: (string: string) => string,
+  },
+  f: {
+    toBuffer: (number) => {
+      if (typeof number === 'number') {
+        const buffer = Buffer.alloc(4);
+        buffer.writeFloatBE(number);
+        return buffer;
+      }
+      throw new Error('osc type f toBuffer called with non number value');
+    },
+    fromString: (string: string) => Number.parseFloat(string),
+  },
+  i: {
+    toBuffer: (number) => {
+      if (typeof number === 'number') {
+        const buffer = Buffer.alloc(4);
+        buffer.writeInt32BE(number);
+        return buffer;
+      }
+      throw new Error('osc type i toBuffer called with non number value');
+    },
+    fromString: (string: string) => Number.parseInt(string, 10),
+  },
+  b: {
+    toBuffer: (data) => {
+      if (Buffer.isBuffer(data)) {
+        const sizeBuffer = oscTypeConverterMap.i.toBuffer(data.length);
+        if (sizeBuffer) {
+          const padSize = 4 - (data.length % 4);
+          const padBuffer = Buffer.from(Array(padSize).fill(0));
+          return Buffer.concat([sizeBuffer, data, padBuffer]);
+        }
+      }
+      throw new Error('osc type b toBuffer called with non Buffer value');
+    },
+    fromString: (string: string) => Buffer.from(string, 'hex'),
+  },
+};
+
+function argsToBuffer(args: OSCArg[]) {
+  const argBuffers: Buffer[] = [];
+
+  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));
+    }
+
+    const buffer = typeConverter.toBuffer(arg.value);
+    if (buffer !== undefined) {
+      argBuffers.push(buffer);
+    }
+  }
+  return Buffer.concat(argBuffers);
+}
+
+function toBuffer({ address, args }: OSCMessage) {
+  const addressBuffer = oscTypeConverterMap.s.toBuffer(address);
+  if (addressBuffer === undefined) {
+    throw new Error('problem encoding address');
+  }
+
+  const typeString = args.map((arg) => arg.type).join('');
+  const typesBuffer = oscTypeConverterMap.s.toBuffer(`,${typeString}`);
+  if (typesBuffer === undefined) {
+    throw new Error('problem encoding types');
+  }
+  const argsBuffer = argsToBuffer(args);
+  return Buffer.concat([addressBuffer, typesBuffer, argsBuffer]);
+}
+
+function stringArgToTypedArg(rawArg: string, type: OSCType = '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);
+}
+
+export default {
+  toBuffer,
+  stringArgToTypedArg,
+};

tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "module": "commonjs",
+    "target": "ES2020",
+    "declaration": true,
+    "rootDir": "./src",
+    "strict": true,
+    "outDir": "dist"
+  },
+  "exclude": ["node_modules", "dist", "examples"]
+}