NodeJS: Difference between revisions

NodeJS (view source)

896 bytes added , 10 June 2020

5,336

edits

@@ Line 132: / Line 132: @@
 [https://www.npmjs.com/package/file-type-cli file-type-cli]<br>
 Detects the file type of a file or buffer
+===argparse===
+[https://www.npmjs.com/package/argparse argparse]
+This is a port of python's argparse. However, it does not support configuration files. I usually use this snippet to parse configuration files:
+<syntaxhighlight lang="python">
+const parser = new ArgumentParser({
+  version: "0.0.1",
+  addHelp: true,
+  description: "Description here"
+});
+// Add your arguments here
+parser.addArgument(["--config"], {
+  type: String,
+  help: "Path to config file (optional)"
+});
+const args = (function() {
+  let myArgs = parser.parseArgs();
+  if (myArgs.config && myArgs.config.length > 0) {
+    const filedata = fs.readFileSync(m_args.config, "utf8");
+    const myArgsArr = filedata
+      .split("\n")
+      .filter(x => x.length > 0)
+      .map(x => "--" + x)
+      .map(x => x.split("="))
+      .flatten();
+    myArgs = parser.parseArgs(myArgsArr);
+  }
+  return myArgs;
+})();
+</syntaxhighlight>