Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/desktop/electron/windows-user-env.ts

@@ -0,0 +1,99 @@
+// windows-user-env.ts
+//
+// Read a User-scoped environment variable straight from the Windows registry
+// (HKCU\Environment).
+//
+// A GUI app launched from Explorer inherits the environment block captured at
+// login, so a variable set via `setx` AFTER login is invisible in process.env
+// even though a fresh shell — and the Hermes CLI — sees it immediately. The
+// desktop's HERMES_HOME resolution relies on process.env, so that stale-snapshot
+// gap silently sends the backend to the default %LOCALAPPDATA%\hermes. Reading
+// the live registry value closes the gap. See #45471.
+
+import { execFileSync } from 'node:child_process'
+
+// Parse the output of `reg query HKCU\Environment /v <name>`, which looks like:
+//
+//   HKEY_CURRENT_USER\Environment
+//       HERMES_HOME    REG_SZ    F:\Hermes\data
+//
+// Returns the raw value string (spaces inside the value preserved), or null when
+// the requested value line isn't present.
+function parseRegQueryValue(stdout, name) {
+  if (!stdout || !name) {
+    return null
+  }
+
+  const typePattern = /^(\S+)\s+(?:REG_SZ|REG_EXPAND_SZ|REG_MULTI_SZ|REG_DWORD|REG_QWORD|REG_BINARY|REG_NONE)\s+(.*)$/
+
+  for (const rawLine of String(stdout).split(/\r?\n/)) {
+    const line = rawLine.trim()
+    const match = line.match(typePattern)
+
+    if (match && match[1].toLowerCase() === name.toLowerCase()) {
+      return match[2]
+    }
+  }
+
+  return null
+}
+
+// Expand %VAR% references against an env map. REG_EXPAND_SZ values store
+// unexpanded references; plain REG_SZ paths have none, so this is a no-op for
+// the common F:\... case. Unknown references are left verbatim.
+function expandWindowsEnvRefs(value, env = process.env) {
+  if (!value) {
+    return value
+  }
+
+  return value.replace(/%([^%]+)%/g, (whole, name) => {
+    const key = Object.keys(env).find(k => k.toUpperCase() === String(name).toUpperCase())
+
+    return key != null && env[key] != null ? env[key] : whole
+  })
+}
+
+// Read a User-scoped env var from HKCU\Environment. Windows-only: returns null
+// off-Windows (without spawning), on any spawn error, when `reg` exits non-zero
+// (the value doesn't exist), or when the value is empty.
+function readWindowsUserEnvVar(
+  name,
+  {
+    platform = process.platform,
+    env = process.env,
+    exec = execFileSync
+  }: {
+    platform?: NodeJS.Platform
+    env?: NodeJS.ProcessEnv
+    exec?: typeof execFileSync | ((file?: string, args?: any) => string)
+  } = {}
+) {
+  if (platform !== 'win32' || !name) {
+    return null
+  }
+
+  let stdout
+
+  try {
+    stdout = exec('reg', ['query', 'HKCU\\Environment', '/v', name], {
+      encoding: 'utf8',
+      windowsHide: true,
+      timeout: 5000
+    })
+  } catch {
+    // `reg` missing, or value absent (reg exits 1) — caller falls back.
+    return null
+  }
+
+  const raw = parseRegQueryValue(stdout, name)
+
+  if (raw == null) {
+    return null
+  }
+
+  const expanded = expandWindowsEnvRefs(raw, env).trim()
+
+  return expanded || null
+}
+
+export { expandWindowsEnvRefs, parseRegQueryValue, readWindowsUserEnvVar }