hugo/hugolib/paths/paths.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

281 lines
7.4 KiB
Go

// Copyright 2018 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 paths
import (
"fmt"
"path/filepath"
"strings"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/langs"
"github.com/gohugoio/hugo/modules"
"github.com/pkg/errors"
"github.com/gohugoio/hugo/hugofs"
)
var FilePathSeparator = string(filepath.Separator)
type Paths struct {
Fs *hugofs.Fs
Cfg config.Provider
BaseURL
// If the baseURL contains a base path, e.g. https://example.com/docs, then "/docs" will be the BasePath.
BasePath string
// Directories
// TODO(bep) when we have trimmed down mos of the dirs usage outside of this package, make
// these into an interface.
ThemesDir string
WorkingDir string
// Directories to store Resource related artifacts.
AbsResourcesDir string
AbsPublishDir string
// pagination path handling
PaginatePath string
PublishDir string
// When in multihost mode, this returns a list of base paths below PublishDir
// for each language.
MultihostTargetBasePaths []string
DisablePathToLower bool
RemovePathAccents bool
UglyURLs bool
CanonifyURLs bool
Language *langs.Language
Languages langs.Languages
LanguagesDefaultFirst langs.Languages
// The PathSpec looks up its config settings in both the current language
// and then in the global Viper config.
// Some settings, the settings listed below, does not make sense to be set
// on per-language-basis. We have no good way of protecting against this
// other than a "white-list". See language.go.
defaultContentLanguageInSubdir bool
DefaultContentLanguage string
multilingual bool
AllModules modules.Modules
ModulesClient *modules.Client
}
func New(fs *hugofs.Fs, cfg config.Provider) (*Paths, error) {
baseURLstr := cfg.GetString("baseURL")
baseURL, err := newBaseURLFromString(baseURLstr)
if err != nil {
return nil, errors.Wrapf(err, "Failed to create baseURL from %q:", baseURLstr)
}
contentDir := filepath.Clean(cfg.GetString("contentDir"))
workingDir := filepath.Clean(cfg.GetString("workingDir"))
resourceDir := filepath.Clean(cfg.GetString("resourceDir"))
publishDir := filepath.Clean(cfg.GetString("publishDir"))
if publishDir == "" {
return nil, fmt.Errorf("publishDir not set")
}
defaultContentLanguage := cfg.GetString("defaultContentLanguage")
var (
language *langs.Language
languages langs.Languages
languagesDefaultFirst langs.Languages
)
if l, ok := cfg.(*langs.Language); ok {
language = l
}
if l, ok := cfg.Get("languagesSorted").(langs.Languages); ok {
languages = l
}
if l, ok := cfg.Get("languagesSortedDefaultFirst").(langs.Languages); ok {
languagesDefaultFirst = l
}
//
if len(languages) == 0 {
// We have some old tests that does not test the entire chain, hence
// they have no languages. So create one so we get the proper filesystem.
languages = langs.Languages{&langs.Language{Lang: "en", Cfg: cfg, ContentDir: contentDir}}
}
absPublishDir := AbsPathify(workingDir, publishDir)
if !strings.HasSuffix(absPublishDir, FilePathSeparator) {
absPublishDir += FilePathSeparator
}
// If root, remove the second '/'
if absPublishDir == "//" {
absPublishDir = FilePathSeparator
}
absResourcesDir := AbsPathify(workingDir, resourceDir)
if !strings.HasSuffix(absResourcesDir, FilePathSeparator) {
absResourcesDir += FilePathSeparator
}
if absResourcesDir == "//" {
absResourcesDir = FilePathSeparator
}
var multihostTargetBasePaths []string
if languages.IsMultihost() {
for _, l := range languages {
multihostTargetBasePaths = append(multihostTargetBasePaths, l.Lang)
}
}
p := &Paths{
Fs: fs,
Cfg: cfg,
BaseURL: baseURL,
DisablePathToLower: cfg.GetBool("disablePathToLower"),
RemovePathAccents: cfg.GetBool("removePathAccents"),
UglyURLs: cfg.GetBool("uglyURLs"),
CanonifyURLs: cfg.GetBool("canonifyURLs"),
ThemesDir: cfg.GetString("themesDir"),
WorkingDir: workingDir,
AbsResourcesDir: absResourcesDir,
AbsPublishDir: absPublishDir,
multilingual: cfg.GetBool("multilingual"),
defaultContentLanguageInSubdir: cfg.GetBool("defaultContentLanguageInSubdir"),
DefaultContentLanguage: defaultContentLanguage,
Language: language,
Languages: languages,
LanguagesDefaultFirst: languagesDefaultFirst,
MultihostTargetBasePaths: multihostTargetBasePaths,
PaginatePath: cfg.GetString("paginatePath"),
}
if cfg.IsSet("allModules") {
p.AllModules = cfg.Get("allModules").(modules.Modules)
}
if cfg.IsSet("modulesClient") {
p.ModulesClient = cfg.Get("modulesClient").(*modules.Client)
}
// TODO(bep) remove this, eventually
p.PublishDir = absPublishDir
return p, nil
}
// GetBasePath returns any path element in baseURL if needed.
func (p *Paths) GetBasePath(isRelativeURL bool) string {
if isRelativeURL && p.CanonifyURLs {
// The baseURL will be prepended later.
return ""
}
return p.BasePath
}
func (p *Paths) Lang() string {
if p == nil || p.Language == nil {
return ""
}
return p.Language.Lang
}
func (p *Paths) GetTargetLanguageBasePath() string {
if p.Languages.IsMultihost() {
// In a multihost configuration all assets will be published below the language code.
return p.Lang()
}
return p.GetLanguagePrefix()
}
func (p *Paths) GetURLLanguageBasePath() string {
if p.Languages.IsMultihost() {
return ""
}
return p.GetLanguagePrefix()
}
func (p *Paths) GetLanguagePrefix() string {
if !p.multilingual {
return ""
}
defaultLang := p.DefaultContentLanguage
defaultInSubDir := p.defaultContentLanguageInSubdir
currentLang := p.Language.Lang
if currentLang == "" || (currentLang == defaultLang && !defaultInSubDir) {
return ""
}
return currentLang
}
// GetLangSubDir returns the given language's subdir if needed.
func (p *Paths) GetLangSubDir(lang string) string {
if !p.multilingual {
return ""
}
if p.Languages.IsMultihost() {
return ""
}
if lang == "" || (lang == p.DefaultContentLanguage && !p.defaultContentLanguageInSubdir) {
return ""
}
return lang
}
// AbsPathify creates an absolute path if given a relative path. If already
// absolute, the path is just cleaned.
func (p *Paths) AbsPathify(inPath string) string {
return AbsPathify(p.WorkingDir, inPath)
}
// RelPathify trims any WorkingDir prefix from the given filename. If
// the filename is not considered to be absolute, the path is just cleaned.
func (p *Paths) RelPathify(filename string) string {
filename = filepath.Clean(filename)
if !filepath.IsAbs(filename) {
return filename
}
return strings.TrimPrefix(strings.TrimPrefix(filename, p.WorkingDir), FilePathSeparator)
}
// AbsPathify creates an absolute path if given a working dir and arelative path.
// If already absolute, the path is just cleaned.
func AbsPathify(workingDir, inPath string) string {
if filepath.IsAbs(inPath) {
return filepath.Clean(inPath)
}
return filepath.Join(workingDir, inPath)
}