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// 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 (
"fmt"
"io"
"path/filepath"
"strings"
"time"
"github.com/gohugoio/hugo/common/htime"
"github.com/gohugoio/hugo/helpers"
"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) ApplyArchetypeFilename(w io.Writer, p page.Page, archetypeKind, archetypeFilename string) error {
fi, err := f.h.SourceFilesystems.Archetypes.Fs.Stat(archetypeFilename)
if err != nil {
return err
}
if fi.IsDir() {
return fmt.Errorf("archetype directory (%q) not supported", archetypeFilename)
}
templateSource, err := afero.ReadFile(f.h.SourceFilesystems.Archetypes.Fs, archetypeFilename)
if err != nil {
return fmt.Errorf("failed to read archetype file %q: %s: %w", archetypeFilename, 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(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(helpers.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) (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
---
`
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()
}
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