summaryrefslogtreecommitdiffstats
path: root/hugolib/content_factory.go
blob: e6b0fb50685a5b482576ebe15e60c6af5940b7b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
// Copyright 2021 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.
// 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 hugolib

import (
	"context"
	"fmt"
	"io"
	"path/filepath"
	"strings"
	"time"

	"github.com/gohugoio/hugo/common/htime"
	"github.com/gohugoio/hugo/common/paths"
	"github.com/gohugoio/hugo/hugofs"

	"github.com/gohugoio/hugo/source"

	"github.com/gohugoio/hugo/resources/page"

	"github.com/spf13/afero"
)

// ContentFactory creates content files from archetype templates.
type ContentFactory struct {
	h *HugoSites

	// We parse the archetype templates as Go templates, so we need
	// to replace any shortcode with a temporary placeholder.
	shortcodeReplacerPre  *strings.Replacer
	shortcodeReplacerPost *strings.Replacer
}

// ApplyArchetypeFilename archetypeFilename to w as a template using the given Page p as the foundation for the data context.
func (f ContentFactory) ApplyArchetypeFi(w io.Writer, p page.Page, archetypeKind string, fi hugofs.FileMetaInfo) error {
	if fi.IsDir() {
		return fmt.Errorf("archetype directory (%q) not supported", fi.Meta().Filename)
	}

	templateSource, err := fi.Meta().ReadAll()
	if err != nil {
		return fmt.Errorf("failed to read archetype file %q: %s: %w", fi.Meta().Filename, err, err)
	}

	return f.ApplyArchetypeTemplate(w, p, archetypeKind, string(templateSource))
}

// ApplyArchetypeTemplate templateSource to w as a template using the given Page p as the foundation for the data context.
func (f ContentFactory) ApplyArchetypeTemplate(w io.Writer, p page.Page, archetypeKind, templateSource string) error {
	ps := p.(*pageState)
	if archetypeKind == "" {
		archetypeKind = p.Type()
	}

	d := &archetypeFileData{
		Type: archetypeKind,
		Date: htime.Now().Format(time.RFC3339),
		Page: p,
		File: p.File(),
	}

	templateSource = f.shortcodeReplacerPre.Replace(templateSource)

	templ, err := ps.s.TextTmpl().Parse("archetype.md", string(templateSource))
	if err != nil {
		return fmt.Errorf("failed to parse archetype template: %s: %w", err, err)
	}

	result, err := executeToString(context.Background(), ps.s.Tmpl(), templ, d)
	if err != nil {
		return fmt.Errorf("failed to execute archetype template: %s: %w", err, err)
	}

	_, err = io.WriteString(w, f.shortcodeReplacerPost.Replace(result))

	return err
}

func (f ContentFactory) SectionFromFilename(filename string) (string, error) {
	filename = filepath.Clean(filename)
	rel, _, err := f.h.AbsProjectContentDir(filename)
	if err != nil {
		return "", err
	}

	parts := strings.Split(paths.ToSlashTrimLeading(rel), "/")
	if len(parts) < 2 {
		return "", nil
	}
	return parts[0], nil
}

// CreateContentPlaceHolder creates a content placeholder file inside the
// best matching content directory.
func (f ContentFactory) CreateContentPlaceHolder(filename string, force bool) (string, error) {
	filename = filepath.Clean(filename)
	_, abs, err := f.h.AbsProjectContentDir(filename)
	if err != nil {
		return "", err
	}

	// This will be overwritten later, just write a placeholder to get
	// the paths correct.
	placeholder := `---
title: "Content Placeholder"
_build:
  render: never
  list: never
  publishResources: false
---

`

	if force {
		return abs, afero.WriteReader(f.h.Fs.Source, abs, strings.NewReader(placeholder))
	}
	return abs, afero.SafeWriteReader(f.h.Fs.Source, abs, strings.NewReader(placeholder))
}

// NewContentFactory creates a new ContentFactory for h.
func NewContentFactory(h *HugoSites) ContentFactory {
	return ContentFactory{
		h: h,
		shortcodeReplacerPre: strings.NewReplacer(
			"{{<", "{x{<",
			"{{%", "{x{%",
			">}}", ">}x}",
			"%}}", "%}x}"),
		shortcodeReplacerPost: strings.NewReplacer(
			"{x{<", "{{<",
			"{x{%", "{{%",
			">}x}", ">}}",
			"%}x}", "%}}"),
	}
}

// archetypeFileData represents the data available to an archetype template.
type archetypeFileData struct {
	// The archetype content type, either given as --kind option or extracted
	// from the target path's section, i.e. "blog/mypost.md" will resolve to
	// "blog".
	Type string

	// The current date and time as a RFC3339 formatted string, suitable for use in front matter.
	Date string

	// The temporary page. Note that only the file path information is relevant at this stage.
	Page page.Page

	// File is the same as Page.File, embedded here for historic reasons.
	// TODO(bep) make this a method.
	*source.File
}

func (f *archetypeFileData) Site() page.Site {
	return f.Page.Site()
}

func (f *archetypeFileData) Name() string {
	return f.Page.File().ContentBaseName()
}