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tpl: Extend Jsonify to support options map
Add support for prefix and indent options used by json.MarshalIndent from the Go stdlib.
This commit is contained in:
parent
1bc93021e3
commit
8568928aa8
3 changed files with 23 additions and 13 deletions
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@ -1,4 +1,4 @@
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// Copyright 2017 The Hugo Authors. All rights reserved.
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// Copyright 2020 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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@ -52,8 +52,11 @@ func (ns *Namespace) Base64Encode(content interface{}) (string, error) {
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return base64.StdEncoding.EncodeToString([]byte(conv)), nil
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}
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// Jsonify encodes a given object to JSON. To pretty print the JSON, pass an
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// optional first argument of the indent string, such as " ".
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// Jsonify encodes a given object to JSON. To pretty print the JSON, pass a map
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// or dictionary of options as the first argument. Supported options are
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// "prefix" and "indent". Each JSON element in the output will begin on a new
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// line beginning with prefix followed by one or more copies of indent according
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// to the indentation nesting.
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func (ns *Namespace) Jsonify(args ...interface{}) (template.HTML, error) {
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var (
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b []byte
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@ -66,14 +69,14 @@ func (ns *Namespace) Jsonify(args ...interface{}) (template.HTML, error) {
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case 1:
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b, err = json.Marshal(args[0])
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case 2:
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var indent string
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var opts map[string]string
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indent, err = cast.ToStringE(args[0])
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opts, err = cast.ToStringMapStringE(args[0])
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if err != nil {
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break
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}
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b, err = json.MarshalIndent(args[1], "", indent)
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b, err = json.MarshalIndent(args[1], opts["prefix"], opts["indent"])
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default:
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err = errors.New("too many arguments to jsonify")
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}
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@ -1,4 +1,4 @@
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// Copyright 2017 The Hugo Authors. All rights reserved.
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// Copyright 2020 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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@ -83,20 +83,27 @@ func TestJsonify(t *testing.T) {
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ns := New()
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for _, test := range []struct {
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indent []interface{}
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opts interface{}
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v interface{}
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expect interface{}
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}{
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{nil, []string{"a", "b"}, template.HTML(`["a","b"]`)},
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{[]interface{}{" "}, []string{"a", "b"}, template.HTML("[\n \"a\",\n \"b\"\n]")},
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{map[string]string{"indent": "<i>"}, []string{"a", "b"}, template.HTML("[\n<i>\"a\",\n<i>\"b\"\n]")},
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{map[string]string{"prefix": "<p>"}, []string{"a", "b"}, template.HTML("[\n<p>\"a\",\n<p>\"b\"\n<p>]")},
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{map[string]string{"prefix": "<p>", "indent": "<i>"}, []string{"a", "b"}, template.HTML("[\n<p><i>\"a\",\n<p><i>\"b\"\n<p>]")},
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{nil, tstNoStringer{}, template.HTML("{}")},
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{nil, nil, template.HTML("null")},
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// errors
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{nil, math.NaN(), false},
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{[]interface{}{tstNoStringer{}}, []string{"a", "b"}, false},
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{tstNoStringer{}, []string{"a", "b"}, false},
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} {
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args := []interface{}{}
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args := append(test.indent, test.v)
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if test.opts != nil {
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args = append(args, test.opts)
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}
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args = append(args, test.v)
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result, err := ns.Jsonify(args...)
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@ -1,4 +1,4 @@
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// Copyright 2017 The Hugo Authors. All rights reserved.
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// Copyright 2020 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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@ -48,7 +48,7 @@ func init() {
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[]string{"jsonify"},
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[][2]string{
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{`{{ (slice "A" "B" "C") | jsonify }}`, `["A","B","C"]`},
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{`{{ (slice "A" "B" "C") | jsonify " "}}`, "[\n \"A\",\n \"B\",\n \"C\"\n]"},
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{`{{ (slice "A" "B" "C") | jsonify (dict "indent" " ") }}`, "[\n \"A\",\n \"B\",\n \"C\"\n]"},
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},
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)
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