github.com/shohhei1126/hugo@v0.42.2-0.20180623210752-3d5928889ad7/tpl/encoding/encoding.go (about) 1 // Copyright 2017 The Hugo Authors. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 14 package encoding 15 16 import ( 17 "encoding/base64" 18 "encoding/json" 19 "html/template" 20 21 "github.com/spf13/cast" 22 ) 23 24 // New returns a new instance of the encoding-namespaced template functions. 25 func New() *Namespace { 26 return &Namespace{} 27 } 28 29 // Namespace provides template functions for the "encoding" namespace. 30 type Namespace struct{} 31 32 // Base64Decode returns the base64 decoding of the given content. 33 func (ns *Namespace) Base64Decode(content interface{}) (string, error) { 34 conv, err := cast.ToStringE(content) 35 if err != nil { 36 return "", err 37 } 38 39 dec, err := base64.StdEncoding.DecodeString(conv) 40 return string(dec), err 41 } 42 43 // Base64Encode returns the base64 encoding of the given content. 44 func (ns *Namespace) Base64Encode(content interface{}) (string, error) { 45 conv, err := cast.ToStringE(content) 46 if err != nil { 47 return "", err 48 } 49 50 return base64.StdEncoding.EncodeToString([]byte(conv)), nil 51 } 52 53 // Jsonify encodes a given object to JSON. 54 func (ns *Namespace) Jsonify(v interface{}) (template.HTML, error) { 55 b, err := json.Marshal(v) 56 if err != nil { 57 return "", err 58 } 59 60 return template.HTML(b), nil 61 }