| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 config |
| |
| import ( |
| "regexp" |
| "strings" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go/common/constant" |
| ) |
| |
| func mergeValue(str1, str2, def string) string { |
| if str1 == "" && str2 == "" { |
| return def |
| } |
| str := "," + strings.Trim(str1, ",") |
| if str1 == "" { |
| str = "," + strings.Trim(str2, ",") |
| } else if str2 != "" { |
| str = str + "," + strings.Trim(str2, ",") |
| } |
| defKey := strings.Contains(str, ","+constant.DEFAULT_KEY) |
| if !defKey { |
| str = "," + constant.DEFAULT_KEY + str |
| } |
| str = strings.TrimPrefix(strings.Replace(str, ","+constant.DEFAULT_KEY, ","+def, -1), ",") |
| |
| strArr := strings.Split(str, ",") |
| strMap := make(map[string][]int) |
| for k, v := range strArr { |
| add := true |
| if strings.HasPrefix(v, "-") { |
| v = v[1:] |
| add = false |
| } |
| if _, ok := strMap[v]; !ok { |
| if add { |
| strMap[v] = []int{1, k} |
| } |
| } else { |
| if add { |
| strMap[v][0] += 1 |
| strMap[v] = append(strMap[v], k) |
| } else { |
| strMap[v][0] -= 1 |
| strMap[v] = strMap[v][:len(strMap[v])-1] |
| } |
| } |
| } |
| strArr = make([]string, len(strArr)) |
| for key, value := range strMap { |
| if value[0] == 0 { |
| continue |
| } |
| for i := 1; i < len(value); i++ { |
| strArr[value[i]] = key |
| } |
| } |
| reg := regexp.MustCompile("[,]+") |
| str = reg.ReplaceAllString(strings.Join(strArr, ","), ",") |
| return strings.Trim(str, ",") |
| } |