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tpl: Extend Jsonify to support options map

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Add support for prefix and indent options used by json.MarshalIndent
from the Go stdlib.
This commit is contained in:
Cameron Moore
2020-03-23 21:03:52 -05:00
committed by Bjørn Erik Pedersen
parent 1bc93021e3
commit 8568928aa8
3 changed files with 23 additions and 13 deletions
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15
tpl/encoding/encoding.go
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@@ -1,4 +1,4 @@
// Copyright 2017 The Hugo Authors. All rights reserved.
// Copyright 2020 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@@ -52,8 +52,11 @@ func (ns *Namespace) Base64Encode(content interface{}) (string, error) {
return base64.StdEncoding.EncodeToString([]byte(conv)), nil
}
// Jsonify encodes a given object to JSON. To pretty print the JSON, pass an
// optional first argument of the indent string, such as " ".
// Jsonify encodes a given object to JSON. To pretty print the JSON, pass a map
// or dictionary of options as the first argument. Supported options are
// "prefix" and "indent". Each JSON element in the output will begin on a new
// line beginning with prefix followed by one or more copies of indent according
// to the indentation nesting.
func (ns *Namespace) Jsonify(args ...interface{}) (template.HTML, error) {
var (
b []byte
@@ -66,14 +69,14 @@ func (ns *Namespace) Jsonify(args ...interface{}) (template.HTML, error) {
case 1:
b, err = json.Marshal(args[0])
case 2:
var indent string
var opts map[string]string
indent, err = cast.ToStringE(args[0])
opts, err = cast.ToStringMapStringE(args[0])
if err != nil {
break
}
b, err = json.MarshalIndent(args[1], "", indent)
b, err = json.MarshalIndent(args[1], opts["prefix"], opts["indent"])
default:
err = errors.New("too many arguments to jsonify")
}