From 8a943500d97598a0b49ef655dc1b5484fe5e83d8 Mon Sep 17 00:00:00 2001
From: Alexis Hovorka <alexisspacegirl@gmail.com>
Date: Wed, 2 Feb 2022 00:06:53 -0700
Subject: Initial commit

---
 lib/router.js | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 lib/router.js

(limited to 'lib/router.js')

diff --git a/lib/router.js b/lib/router.js
new file mode 100644
index 0000000..fd24693
--- /dev/null
+++ b/lib/router.js
@@ -0,0 +1,53 @@
+"use strict"; // https://github.com/mixu/minimal
+
+const url = require("url");
+const degroup = path => Object.assign(path, path.groups);
+
+class Router {
+  constructor() {
+    this.routes = [];
+  }
+
+  route(req, res) {
+    const pathname = url.parse(req.url).pathname;
+    return this.routes.some(route => {
+      const isMatch = route.method === req.method && route.re.test(pathname);
+      if (isMatch) route.cb(req, res, degroup(route.re.exec(pathname)));
+      return isMatch;
+    });
+  }
+
+  gather(cb, max) { // Handle POST data
+    return (req, res, match) => {
+      let data = "";
+      req.on("data", chunk => {
+        if ((data += chunk).length > (max||1e6)) // ~1MB
+          req.connection.destroy();
+      }).on("end", () => cb(req, res, match, data));
+    };
+  }
+
+  gpost(re, cb, max) {
+    this.post(re, this.gather(cb, max));
+  }
+
+  jpost(re, cb, max) {
+    this.gpost(re, (req, res, match, data) => {
+      try {
+        data = JSON.parse(data);
+      } catch (e) {
+        res.writeHead(400, {"Content-Type": "text/plain"});
+        return res.end("400 Bad Request");
+      }
+
+      cb(req, res, match, data);
+    }, max);
+  }
+}
+
+["get", "post", "put", "delete"].forEach(method =>
+  Router.prototype[method] = function(re, cb) {
+    this.routes.push({method: method.toUpperCase(), cb,
+      re: (re instanceof RegExp)? re : new RegExp(`^${re}$`)})});
+
+module.exports = Router;
-- 
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