Gradually remove Macaron web framework (#36325)

* add macaron code to the code base * remove unused secure cookies support from macaron * clean up modules * remove com dependency * fix silly typos * little cleanup, remove recovery middleware * remove logger middleware * remove static handler and remove unused context methods * bring inject into macaron codebase * remove unused applicator * add back macaron license * more cleanups in macaron code * remove unused injector Set method * remove unused context methods: param to int conversion, body helper type, cookie helpers * remove action from context * remove complex environment handling, we only use Env variable * restore ReplaceAllParams to fix the tests
2021-07-08 14:19:40 +02:00
parent 4c0acf335b
commit 9b2d7d6d69
13 changed files with 2535 additions and 2 deletions
@@ -0,0 +1,74 @@
+// Copyright 2013 Martini Authors
+// Copyright 2014 The Macaron Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"): you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+package macaron
+
+import (
+	"net/http"
+	"reflect"
+)
+
+// ReturnHandler is a service that Martini provides that is called
+// when a route handler returns something. The ReturnHandler is
+// responsible for writing to the ResponseWriter based on the values
+// that are passed into this function.
+type ReturnHandler func(*Context, []reflect.Value)
+
+func canDeref(val reflect.Value) bool {
+	return val.Kind() == reflect.Interface || val.Kind() == reflect.Ptr
+}
+
+func isError(val reflect.Value) bool {
+	_, ok := val.Interface().(error)
+	return ok
+}
+
+func isByteSlice(val reflect.Value) bool {
+	return val.Kind() == reflect.Slice && val.Type().Elem().Kind() == reflect.Uint8
+}
+
+func defaultReturnHandler() ReturnHandler {
+	return func(ctx *Context, vals []reflect.Value) {
+		rv := ctx.GetVal(InterfaceOf((*http.ResponseWriter)(nil)))
+		resp := rv.Interface().(http.ResponseWriter)
+		var respVal reflect.Value
+		if len(vals) > 1 && vals[0].Kind() == reflect.Int {
+			resp.WriteHeader(int(vals[0].Int()))
+			respVal = vals[1]
+		} else if len(vals) > 0 {
+			respVal = vals[0]
+
+			if isError(respVal) {
+				err := respVal.Interface().(error)
+				if err != nil {
+					ctx.internalServerError(ctx, err)
+				}
+				return
+			} else if canDeref(respVal) {
+				if respVal.IsNil() {
+					return // Ignore nil error
+				}
+			}
+		}
+		if canDeref(respVal) {
+			respVal = respVal.Elem()
+		}
+		if isByteSlice(respVal) {
+			_, _ = resp.Write(respVal.Bytes())
+		} else {
+			_, _ = resp.Write([]byte(respVal.String()))
+		}
+	}
+}