Add getParams method to router.dart

pkgs/shelf_router/CHANGELOG.md

@@ -1,4 +1,6 @@
-## 1.1.5-wip
+## 1.2.0-wip
+
+* Added function `getParams` to the `Router` class to get the parameters from a request
 
 * Require Dart `^3.3.0`.
 

pkgs/shelf_router/lib/src/router.dart

@@ -190,6 +190,22 @@ class Router {
     return _notFoundHandler(request);
   }
 
+  /// Get URL parameters captured by the [Router].
+  ///
+  /// Returns `null` if no parameters are captured.
+  Map<String, String>? getParams(Request request) {
+    for (var route in _routes) {
+      if (route.verb != request.method.toUpperCase() && route.verb != 'ALL') {
+        continue;
+      }
+      var params = route.match('/${request.url.path}');
+      if (params != null) {
+        return params;
+      }
+    }
+    return null;
+  }
+
   // Handlers for all methods
 
   /// Handle `GET` request to [route] using [handler].

pkgs/shelf_router/test/router_test.dart

@@ -86,6 +86,21 @@ void main() {
     expect(await get('/user/jonasfj/groups/42'), 'jonasfj / 42');
   });
 
+  test('get params via getParams', () async {
+    var app = Router();
+
+    app.get(
+      r'/user/<user>/groups/<group|\d+>',
+      (Request request) => Response.ok(''),
+    );
+
+    final params =
+        app.getParams(Request('GET', Uri.http('', '/user/jonasfj/groups/42')))!;
+
+    expect(params['user'], 'jonasfj');
+    expect(params['group'], '42');
+  });
+
   test('params by arguments', () async {
     var app = Router();