| /** |
| * 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 yaml |
| |
| import ( |
| "fmt" |
| "sort" |
| "strings" |
| ) |
| |
| func EscapeString(s string) string { |
| special := ":{}[],&*#?|-<>=!%@\\\"'" |
| if strings.ContainsAny(s, special) { |
| return "\"" + strings.Replace(s, "\"", "\\\"", -1) + "\"" |
| } else { |
| return s |
| } |
| } |
| |
| // Converts a key-value pair to a YAML string. |
| func KvToYaml(key string, val interface{}, indent int) string { |
| s := "" |
| |
| if key != "" { |
| s += fmt.Sprintf("%*s%s:", indent, "", EscapeString(key)) |
| } |
| |
| switch v := val.(type) { |
| case []interface{}: |
| s += "\n" |
| for _, elem := range v { |
| s += fmt.Sprintf("%*s- %s\n", indent+4, "", KvToYaml("", elem, 0)) |
| } |
| |
| case map[interface{}]interface{}: |
| s += "\n" |
| |
| subKeys := make([]string, 0, len(v)) |
| for sk, _ := range v { |
| subKeys = append(subKeys, sk.(string)) |
| } |
| sort.Strings(subKeys) |
| |
| for _, sk := range subKeys { |
| s += KvToYaml(sk, v[sk], indent+4) |
| } |
| |
| default: |
| valStr := EscapeString(fmt.Sprintf("%v", v)) |
| s += fmt.Sprintf(" %v\n", valStr) |
| } |
| |
| return s |
| } |
| |
| func MapToYaml(m map[string]interface{}) string { |
| keys := make([]string, 0, len(m)) |
| for k, _ := range m { |
| keys = append(keys, k) |
| } |
| sort.Strings(keys) |
| |
| s := "" |
| for _, k := range keys { |
| s += KvToYaml(k, m[k], 0) |
| } |
| |
| return s |
| } |