hugo/create/content.go
Bjørn Erik Pedersen 9f5a92078a
Add Hugo Modules
This commit implements Hugo Modules.

This is a broad subject, but some keywords include:

* A new `module` configuration section where you can import almost anything. You can configure both your own file mounts nd the file mounts of the modules you import. This is the new recommended way of configuring what you earlier put in `configDir`, `staticDir` etc. And it also allows you to mount folders in non-Hugo-projects, e.g. the `SCSS` folder in the Bootstrap GitHub project.
* A module consists of a set of mounts to the standard 7 component types in Hugo: `static`, `content`, `layouts`, `data`, `assets`, `i18n`, and `archetypes`. Yes, Theme Components can now include content, which should be very useful, especially in bigger multilingual projects.
* Modules not in your local file cache will be downloaded automatically and even "hot replaced" while the server is running.
* Hugo Modules supports and encourages semver versioned modules, and uses the minimal version selection algorithm to resolve versions.
* A new set of CLI commands are provided to manage all of this: `hugo mod init`,  `hugo mod get`,  `hugo mod graph`,  `hugo mod tidy`, and  `hugo mod vendor`.

All of the above is backed by Go Modules.

Fixes #5973
Fixes #5996
Fixes #6010
Fixes #5911
Fixes #5940
Fixes #6074
Fixes #6082
Fixes #6092
2019-07-24 09:35:53 +02:00

349 lines
8 KiB
Go

// Copyright 2019 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 create provides functions to create new content.
package create
import (
"bytes"
"github.com/pkg/errors"
"io"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/gohugoio/hugo/hugofs/files"
"github.com/gohugoio/hugo/hugofs"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/hugolib"
"github.com/spf13/afero"
jww "github.com/spf13/jwalterweatherman"
)
// NewContent creates a new content file in the content directory based upon the
// given kind, which is used to lookup an archetype.
func NewContent(
sites *hugolib.HugoSites, kind, targetPath string) error {
targetPath = filepath.Clean(targetPath)
ext := helpers.Ext(targetPath)
ps := sites.PathSpec
archetypeFs := ps.BaseFs.SourceFilesystems.Archetypes.Fs
sourceFs := ps.Fs.Source
jww.INFO.Printf("attempting to create %q of %q of ext %q", targetPath, kind, ext)
archetypeFilename, isDir := findArchetype(ps, kind, ext)
contentPath, s := resolveContentPath(sites, sourceFs, targetPath)
if isDir {
langFs, err := hugofs.NewLanguageFs(sites.LanguageSet(), archetypeFs)
if err != nil {
return err
}
cm, err := mapArcheTypeDir(ps, langFs, archetypeFilename)
if err != nil {
return err
}
if cm.siteUsed {
if err := sites.Build(hugolib.BuildCfg{SkipRender: true}); err != nil {
return err
}
}
name := filepath.Base(targetPath)
return newContentFromDir(archetypeFilename, sites, sourceFs, cm, name, contentPath)
}
// Building the sites can be expensive, so only do it if really needed.
siteUsed := false
if archetypeFilename != "" {
var err error
siteUsed, err = usesSiteVar(archetypeFs, archetypeFilename)
if err != nil {
return err
}
}
if siteUsed {
if err := sites.Build(hugolib.BuildCfg{SkipRender: true}); err != nil {
return err
}
}
content, err := executeArcheTypeAsTemplate(s, "", kind, targetPath, archetypeFilename)
if err != nil {
return err
}
if err := helpers.SafeWriteToDisk(contentPath, bytes.NewReader(content), s.Fs.Source); err != nil {
return err
}
jww.FEEDBACK.Println(contentPath, "created")
editor := s.Cfg.GetString("newContentEditor")
if editor != "" {
jww.FEEDBACK.Printf("Editing %s with %q ...\n", targetPath, editor)
cmd := exec.Command(editor, contentPath)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
return cmd.Run()
}
return nil
}
func targetSite(sites *hugolib.HugoSites, fi hugofs.FileMetaInfo) *hugolib.Site {
for _, s := range sites.Sites {
if fi.Meta().Lang() == s.Language().Lang {
return s
}
}
return sites.Sites[0]
}
func newContentFromDir(
archetypeDir string,
sites *hugolib.HugoSites,
targetFs afero.Fs,
cm archetypeMap, name, targetPath string) error {
for _, f := range cm.otherFiles {
meta := f.Meta()
filename := meta.Path()
// Just copy the file to destination.
in, err := meta.Open()
if err != nil {
return errors.Wrap(err, "failed to open non-content file")
}
targetFilename := filepath.Join(targetPath, strings.TrimPrefix(filename, archetypeDir))
targetDir := filepath.Dir(targetFilename)
if err := targetFs.MkdirAll(targetDir, 0777); err != nil && !os.IsExist(err) {
return errors.Wrapf(err, "failed to create target directory for %s:", targetDir)
}
out, err := targetFs.Create(targetFilename)
if err != nil {
return err
}
_, err = io.Copy(out, in)
if err != nil {
return err
}
in.Close()
out.Close()
}
for _, f := range cm.contentFiles {
filename := f.Meta().Path()
s := targetSite(sites, f)
targetFilename := filepath.Join(targetPath, strings.TrimPrefix(filename, archetypeDir))
content, err := executeArcheTypeAsTemplate(s, name, archetypeDir, targetFilename, filename)
if err != nil {
return errors.Wrap(err, "failed to execute archetype template")
}
if err := helpers.SafeWriteToDisk(targetFilename, bytes.NewReader(content), targetFs); err != nil {
return errors.Wrap(err, "failed to save results")
}
}
jww.FEEDBACK.Println(targetPath, "created")
return nil
}
type archetypeMap struct {
// These needs to be parsed and executed as Go templates.
contentFiles []hugofs.FileMetaInfo
// These are just copied to destination.
otherFiles []hugofs.FileMetaInfo
// If the templates needs a fully built site. This can potentially be
// expensive, so only do when needed.
siteUsed bool
}
func mapArcheTypeDir(
ps *helpers.PathSpec,
fs afero.Fs,
archetypeDir string) (archetypeMap, error) {
var m archetypeMap
walkFn := func(path string, fi hugofs.FileMetaInfo, err error) error {
if err != nil {
return err
}
if fi.IsDir() {
return nil
}
fil := fi.(hugofs.FileMetaInfo)
if files.IsContentFile(path) {
m.contentFiles = append(m.contentFiles, fil)
if !m.siteUsed {
m.siteUsed, err = usesSiteVar(fs, path)
if err != nil {
return err
}
}
return nil
}
m.otherFiles = append(m.otherFiles, fil)
return nil
}
walkCfg := hugofs.WalkwayConfig{
WalkFn: walkFn,
Fs: fs,
Root: archetypeDir,
}
w := hugofs.NewWalkway(walkCfg)
if err := w.Walk(); err != nil {
return m, errors.Wrapf(err, "failed to walk archetype dir %q", archetypeDir)
}
return m, nil
}
func usesSiteVar(fs afero.Fs, filename string) (bool, error) {
f, err := fs.Open(filename)
if err != nil {
return false, errors.Wrap(err, "failed to open archetype file")
}
defer f.Close()
return helpers.ReaderContains(f, []byte(".Site")), nil
}
// Resolve the target content path.
func resolveContentPath(sites *hugolib.HugoSites, fs afero.Fs, targetPath string) (string, *hugolib.Site) {
targetDir := filepath.Dir(targetPath)
first := sites.Sites[0]
var (
s *hugolib.Site
siteContentDir string
)
// Try the filename: my-post.en.md
for _, ss := range sites.Sites {
if strings.Contains(targetPath, "."+ss.Language().Lang+".") {
s = ss
break
}
}
var dirLang string
for _, dir := range sites.BaseFs.Content.Dirs {
meta := dir.Meta()
contentDir := meta.Filename()
if !strings.HasSuffix(contentDir, helpers.FilePathSeparator) {
contentDir += helpers.FilePathSeparator
}
if strings.HasPrefix(targetPath, contentDir) {
siteContentDir = contentDir
dirLang = meta.Lang()
break
}
}
if s == nil && dirLang != "" {
for _, ss := range sites.Sites {
if ss.Lang() == dirLang {
s = ss
break
}
}
}
if s == nil {
s = first
}
if targetDir != "" && targetDir != "." {
exists, _ := helpers.Exists(targetDir, fs)
if exists {
return targetPath, s
}
}
if siteContentDir == "" {
}
if siteContentDir != "" {
pp := filepath.Join(siteContentDir, strings.TrimPrefix(targetPath, siteContentDir))
return s.PathSpec.AbsPathify(pp), s
} else {
var contentDir string
for _, dir := range sites.BaseFs.Content.Dirs {
contentDir = dir.Meta().Filename()
if dir.Meta().Lang() == s.Lang() {
break
}
}
return s.PathSpec.AbsPathify(filepath.Join(contentDir, targetPath)), s
}
}
// FindArchetype takes a given kind/archetype of content and returns the path
// to the archetype in the archetype filesystem, blank if none found.
func findArchetype(ps *helpers.PathSpec, kind, ext string) (outpath string, isDir bool) {
fs := ps.BaseFs.Archetypes.Fs
var pathsToCheck []string
if kind != "" {
pathsToCheck = append(pathsToCheck, kind+ext)
}
pathsToCheck = append(pathsToCheck, "default"+ext, "default")
for _, p := range pathsToCheck {
fi, err := fs.Stat(p)
if err == nil {
return p, fi.IsDir()
}
}
return "", false
}