From 7a497f56b998591726b8504648c2f3cef4faeaf9 Mon Sep 17 00:00:00 2001
From: Michael Bianco <iloveitaly@gmail.com>
Date: Fri, 28 Jul 2023 15:23:08 -0600
Subject: [PATCH] feat: more flexible argument parser

---
 debugger/util/argument_parser.js | 61 ++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 debugger/util/argument_parser.js

diff --git a/debugger/util/argument_parser.js b/debugger/util/argument_parser.js
new file mode 100644
index 0000000..e78ea6e
--- /dev/null
+++ b/debugger/util/argument_parser.js
@@ -0,0 +1,61 @@
+const {
+  ArrayPrototypeSplice,
+  StringPrototypeSplit
+} = primordials;
+
+// Helper function to parse a boolean
+function parseBoolean(value) {
+  return value === 'true' || value === '1' || value === 'yes';
+}
+
+function parseArguments(argv) {
+  // Default options
+  let options = {
+    port: undefined,
+    pauseOnExceptionState: undefined,
+    inspectResumeOnStart: undefined
+  }
+
+  // Parsing process.env.NODE_INSPECT_OPTIONS
+  if (process.env.NODE_INSPECT_OPTIONS) {
+    const envOptions = StringPrototypeSplit(process.env.NODE_INSPECT_OPTIONS, ' ');
+    for (let i = 0; i < envOptions.length; i++) {
+      switch (envOptions[i]) {
+        case '--port':
+          options.port = envOptions[++i];
+          break;
+        case '--pause-on-exception-state':
+          options.pauseOnExceptionState = envOptions[++i];
+          break;
+        case '--inspect-resume-on-start':
+          options.inspectResumeOnStart = parseBoolean(envOptions[++i]);
+          break;
+      }
+    }
+  }
+
+  // Parsing argv
+  for (let i = 0; i < argv.length;) {
+    switch (argv[i]) {
+      case '--port':
+        options.port = argv[i+1];
+        ArrayPrototypeSplice(argv, i, 2);
+        break;
+      case '--pause-on-exception-state':
+        options.pauseOnExceptionState = argv[i+1];
+        ArrayPrototypeSplice(argv, i, 2);
+        break;
+      case '--inspect-resume-on-start':
+        options.inspectResumeOnStart = parseBoolean(argv[i+1]);
+        ArrayPrototypeSplice(argv, i, 2);
+        break;
+      default:
+        i++;
+        break;
+    }
+  }
+
+  return options;
+}
+
+module.exports = { parseArguments };