support yaml/json/toml configuration format, make ini deprecated (#3599)

pkg/config/legacy/utils.go

@@ -0,0 +1,51 @@
+// Copyright 2020 The frp 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 legacy
+
+import (
+	"strings"
+)
+
+func GetMapWithoutPrefix(set map[string]string, prefix string) map[string]string {
+	m := make(map[string]string)
+
+	for key, value := range set {
+		if strings.HasPrefix(key, prefix) {
+			m[strings.TrimPrefix(key, prefix)] = value
+		}
+	}
+
+	if len(m) == 0 {
+		return nil
+	}
+
+	return m
+}
+
+func GetMapByPrefix(set map[string]string, prefix string) map[string]string {
+	m := make(map[string]string)
+
+	for key, value := range set {
+		if strings.HasPrefix(key, prefix) {
+			m[key] = value
+		}
+	}
+
+	if len(m) == 0 {
+		return nil
+	}
+
+	return m
+}