Rewrite grunt keycode task

Author: drauggres

lib/adb/keycode.ts

@@ -1,5 +1,6 @@
-// Generated by `grunt keycode` on Tue, 26 Nov 2013 08:02:49 GMT
+// Generated by `npm run keycode` on Tue, 13 Oct 2020 12:32:45 GMT
 // KeyEvent.java Copyright (C) 2006 The Android Open Source Project
+
 export = {
 	KEYCODE_UNKNOWN: 0,
 	KEYCODE_SOFT_LEFT: 1,

package.json

@@ -27,6 +27,7 @@
     "url": "https://github.com/DeviceFarmer/adbkit.git"
   },
   "scripts": {
+    "keycode": "node tasks/keycode.js",
     "prepublish": "npm run compile && npm run test",
     "compile": "tsc -p .",
     "lint": "eslint ./ --ext .ts",

tasks/keycode.coffee

@@ -0,0 +1,43 @@
+const https = require('https');
+const fs = require('fs');
+const path = require('path');
+
+const repo_path = '/aosp-mirror/platform_frameworks_base/master';
+const original = {
+  hostname: 'raw.githubusercontent.com',
+  path: repo_path + '/core/java/android/view/KeyEvent.java',
+  method: 'GET',
+};
+const regex = /public static final int (KEYCODE_[^\s]+)\s*=\s*([0-9]+);/g;
+const file = path.resolve(__dirname, '../lib/adb/keycode.ts');
+
+const req = https.request(original, function (res) {
+  if (res.statusCode !== 200) {
+    console.warn('Unable to retrieve KeyEvent.java (HTTP ' + res.statusCode + ')');
+    return;
+  }
+  let raw = Buffer.from('');
+  res.on('data', (chunk) => {
+    return (raw = Buffer.concat([raw, chunk]));
+  });
+  return res.on('end', () => {
+    let match;
+    const code = raw.toString();
+    const date = new Date().toUTCString();
+    const coffee = [];
+    coffee.push('// Generated by `npm run keycode` on ' + date);
+    coffee.push('// KeyEvent.java Copyright (C) 2006 The Android Open Source Project');
+    coffee.push('');
+    coffee.push('export = {');
+    while ((match = regex.exec(code))) {
+      coffee.push(`\t${match[1]}: ${match[2]},`);
+    }
+    coffee.push('};\n');
+    fs.writeFileSync(file, coffee.join('\n'));
+    console.log('File ' + file + ' created');
+  });
+});
+req.on('error', (e) => {
+  console.error(e.message);
+});
+return req.end();