some refactoring

build.zig

@@ -34,7 +34,7 @@ pub fn build(b: *std.build.Builder) !void {
         .{ .name = "hello", .src = "examples/hello/hello.zig" },
         .{ .name = "https", .src = "examples/https/https.zig" },
         .{ .name = "hello2", .src = "examples/hello2/hello2.zig" },
-        .{ .name = "hello3", .src = "examples/hello3/hello3.zig" },
+        .{ .name = "simple_router", .src = "examples/simple_router/simple_router.zig" },
         .{ .name = "routes", .src = "examples/routes/routes.zig" },
         .{ .name = "serve", .src = "examples/serve/serve.zig" },
         .{ .name = "hello_json", .src = "examples/hello_json/hello_json.zig" },

src/router.zig

@@ -7,71 +7,54 @@ const RouterError = error{
     EmptyPath,
 };
 
-// inline closure for RequestFn with self argument
-pub inline fn RequestHandler(self: anytype, func: *const fn (@TypeOf(self), zap.Request) void) *const fn (zap.Request) void {
-    return (opaque {
-        var hidden_self: @TypeOf(self) = undefined;
-        var hidden_func: *const fn (@TypeOf(self), zap.Request) void = undefined;
-        pub fn init(h_self: @TypeOf(self), h_func: *const fn (@TypeOf(self), zap.Request) void) *const @TypeOf(run) {
-            hidden_self = h_self;
-            hidden_func = h_func;
-            return &run;
-        }
+const Self = @This();
 
-        fn run(req: zap.Request) void {
-            hidden_func(hidden_self, req);
-        }
-    }).init(self, func);
-}
-
-pub const RouterOptions = struct {
+pub const Options = struct {
     not_found: ?zap.HttpRequestFn = null,
 };
 
-pub const Router = struct {
-    const Self = @This();
+routes: std.StringHashMap(zap.HttpRequestFn),
+not_found: ?zap.HttpRequestFn,
 
-    routes: std.StringHashMap(zap.HttpRequestFn),
-    not_found: ?zap.HttpRequestFn,
+pub fn init(allocator: Allocator, options: Options) Self {
+    return .{
+        .routes = std.StringHashMap(zap.HttpRequestFn).init(allocator),
 
-    pub fn init(allocator: Allocator, options: RouterOptions) Self {
-        return .{
-            .routes = std.StringHashMap(zap.HttpRequestFn).init(allocator),
+        .not_found = options.not_found,
+    };
+}
 
-            .not_found = options.not_found,
-        };
-    }
+pub fn deinit(self: *Self) void {
+    self.routes.deinit();
+}
 
-    pub fn deinit(self: *Self) void {
-        self.routes.deinit();
+pub fn handle_func(self: *Self, path: []const u8, h: zap.HttpRequestFn) !void {
+    if (path.len == 0) {
+        return RouterError.EmptyPath;
     }
 
-    pub fn handle_func(self: *Self, path: []const u8, h: zap.HttpRequestFn) !void {
-        if (path.len == 0) {
-            return RouterError.EmptyPath;
-        }
+    const route = self.routes.get(path);
 
-        const route = self.routes.get(path);
+    if (route != null) {
+        return RouterError.AlreadyExists;
+    }
 
-        if (route != null) {
-            return RouterError.AlreadyExists;
-        }
+    try self.routes.put(path, h);
+}
 
-        try self.routes.put(path, h);
-    }
+pub fn serve(self: *Self, r: zap.Request) void {
+    const path = if (r.path) |p| p else "/";
 
-    pub fn serve(self: *Self, r: zap.Request) void {
-        var route = self.routes.get(r.path.?);
+    var route = self.routes.get(path);
 
-        if (route) |handler| {
-            handler(r);
-        } else if (self.not_found) |handler| {
-            // not found handler
-            handler(r);
-        } else {
-            // default 404 output
-            r.setStatus(.not_found);
-            r.sendBody("404 Not Found") catch return;
-        }
+    if (route) |handler| {
+        handler(r);
+    } else if (self.not_found) |handler| {
+        // not found handler
+        handler(r);
+    } else {
+        // default 404 output
+        r.setStatus(.not_found);
+        r.sendBody("404 Not Found") catch return;
     }
-};
+}

src/util.zig

@@ -1,5 +1,23 @@
 const std = @import("std");
 const fio = @import("fio.zig");
+const zap = @import("zap.zig");
+
+/// capture self for RequestFn signature support
+pub inline fn RequestHandler(self: anytype, func: *const fn (@TypeOf(self), zap.Request) void) *const fn (zap.Request) void {
+    return (opaque {
+        var hidden_self: @TypeOf(self) = undefined;
+        var hidden_func: *const fn (@TypeOf(self), zap.Request) void = undefined;
+        pub fn init(h_self: @TypeOf(self), h_func: *const fn (@TypeOf(self), zap.Request) void) *const @TypeOf(run) {
+            hidden_self = h_self;
+            hidden_func = h_func;
+            return &run;
+        }
+
+        fn run(req: zap.Request) void {
+            hidden_func(hidden_self, req);
+        }
+    }).init(self, func);
+}
 
 /// Used internally: convert a FIO object into its string representation.
 /// note: since this is called from within request functions, we don't make

src/zap.zig

@@ -52,7 +52,7 @@ pub const Tls = @import("tls.zig");
 /// ```
 pub const Endpoint = @import("endpoint.zig");
 
-pub usingnamespace @import("router.zig");
+pub const Router = @import("router.zig");
 
 pub usingnamespace @import("util.zig");
 pub usingnamespace @import("http.zig");