mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
318 lines
8.5 KiB
Go
318 lines
8.5 KiB
Go
// Copyright 2017 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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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hugolib
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import (
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"fmt"
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"path/filepath"
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"net/url"
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"strings"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/output"
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)
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// targetPathDescriptor describes how a file path for a given resource
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// should look like on the file system. The same descriptor is then later used to
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// create both the permalinks and the relative links, paginator URLs etc.
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//
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// The big motivating behind this is to have only one source of truth for URLs,
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// and by that also get rid of most of the fragile string parsing/encoding etc.
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//
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// Page.createTargetPathDescriptor is the Page adapter.
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//
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type targetPathDescriptor struct {
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PathSpec *helpers.PathSpec
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Type output.Format
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Kind string
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Sections []string
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// For regular content pages this is either
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// 1) the Slug, if set,
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// 2) the file base name (TranslationBaseName).
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BaseName string
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// Source directory.
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Dir string
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// Language prefix, set if multilingual and if page should be placed in its
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// language subdir.
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LangPrefix string
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// Whether this is a multihost multilingual setup.
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IsMultihost bool
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// URL from front matter if set. Will override any Slug etc.
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URL string
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// Used to create paginator links.
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Addends string
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// The expanded permalink if defined for the section, ready to use.
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ExpandedPermalink string
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// Some types cannot have uglyURLs, even if globally enabled, RSS being one example.
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UglyURLs bool
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}
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// createTargetPathDescriptor adapts a Page and the given output.Format into
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// a targetPathDescriptor. This descriptor can then be used to create paths
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// and URLs for this Page.
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func (p *Page) createTargetPathDescriptor(t output.Format) (targetPathDescriptor, error) {
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if p.targetPathDescriptorPrototype == nil {
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panic(fmt.Sprintf("Must run initTargetPathDescriptor() for page %q, kind %q", p.title, p.Kind))
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}
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d := *p.targetPathDescriptorPrototype
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d.Type = t
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return d, nil
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}
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func (p *Page) initTargetPathDescriptor() error {
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d := &targetPathDescriptor{
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PathSpec: p.s.PathSpec,
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Kind: p.Kind,
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Sections: p.sections,
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UglyURLs: p.s.Info.uglyURLs(p),
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Dir: filepath.ToSlash(p.Source.Dir()),
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URL: p.frontMatterURL,
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IsMultihost: p.s.owner.IsMultihost(),
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}
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if p.Slug != "" {
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d.BaseName = p.Slug
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} else {
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d.BaseName = p.TranslationBaseName()
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}
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if p.shouldAddLanguagePrefix() {
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d.LangPrefix = p.Lang()
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}
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// Expand only KindPage and KindTaxonomy; don't expand other Kinds of Pages
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// like KindSection or KindTaxonomyTerm because they are "shallower" and
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// the permalink configuration values are likely to be redundant, e.g.
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// naively expanding /category/:slug/ would give /category/categories/ for
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// the "categories" KindTaxonomyTerm.
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if p.Kind == KindPage || p.Kind == KindTaxonomy {
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if override, ok := p.Site.Permalinks[p.Section()]; ok {
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opath, err := override.Expand(p)
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if err != nil {
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return err
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}
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opath, _ = url.QueryUnescape(opath)
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opath = filepath.FromSlash(opath)
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d.ExpandedPermalink = opath
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}
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}
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p.targetPathDescriptorPrototype = d
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return nil
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}
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func (p *Page) initURLs() error {
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if len(p.outputFormats) == 0 {
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p.outputFormats = p.s.outputFormats[p.Kind]
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}
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target := filepath.ToSlash(p.createRelativeTargetPath())
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rel := p.s.PathSpec.URLizeFilename(target)
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var err error
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f := p.outputFormats[0]
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p.permalink, err = p.s.permalinkForOutputFormat(rel, f)
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if err != nil {
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return err
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}
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p.relTargetPathBase = strings.TrimPrefix(strings.TrimSuffix(target, f.MediaType.FullSuffix()), "/")
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if prefix := p.s.GetLanguagePrefix(); prefix != "" {
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// Any language code in the path will be added later.
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p.relTargetPathBase = strings.TrimPrefix(p.relTargetPathBase, prefix+"/")
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}
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p.relPermalink = p.s.PathSpec.PrependBasePath(rel)
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p.layoutDescriptor = p.createLayoutDescriptor()
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return nil
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}
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func (p *Page) initPaths() error {
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if err := p.initTargetPathDescriptor(); err != nil {
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return err
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}
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if err := p.initURLs(); err != nil {
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return err
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}
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return nil
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}
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// createTargetPath creates the target filename for this Page for the given
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// output.Format. Some additional URL parts can also be provided, the typical
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// use case being pagination.
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func (p *Page) createTargetPath(t output.Format, noLangPrefix bool, addends ...string) (string, error) {
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d, err := p.createTargetPathDescriptor(t)
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if err != nil {
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return "", nil
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}
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if noLangPrefix {
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d.LangPrefix = ""
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}
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if len(addends) > 0 {
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d.Addends = filepath.Join(addends...)
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}
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return createTargetPath(d), nil
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}
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func createTargetPath(d targetPathDescriptor) string {
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pagePath := helpers.FilePathSeparator
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// The top level index files, i.e. the home page etc., needs
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// the index base even when uglyURLs is enabled.
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needsBase := true
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isUgly := d.UglyURLs && !d.Type.NoUgly
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if d.ExpandedPermalink == "" && d.BaseName != "" && d.BaseName == d.Type.BaseName {
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isUgly = true
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}
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if d.Kind != KindPage && d.URL == "" && len(d.Sections) > 0 {
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if d.ExpandedPermalink != "" {
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pagePath = filepath.Join(pagePath, d.ExpandedPermalink)
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} else {
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pagePath = ""
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for i, section := range d.Sections {
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if i > 0 {
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pagePath += helpers.FilePathSeparator
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}
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pagePath += d.PathSpec.MakeSegment(section)
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}
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}
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needsBase = false
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}
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if d.Type.Path != "" {
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pagePath = filepath.Join(pagePath, d.Type.Path)
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}
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if d.Kind != KindHome && d.URL != "" {
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if d.IsMultihost && d.LangPrefix != "" && !strings.HasPrefix(d.URL, "/"+d.LangPrefix) {
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pagePath = filepath.Join(d.LangPrefix, pagePath, d.URL)
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} else {
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pagePath = filepath.Join(pagePath, d.URL)
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}
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if d.Addends != "" {
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pagePath = filepath.Join(pagePath, d.Addends)
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}
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if strings.HasSuffix(d.URL, "/") || !strings.Contains(d.URL, ".") {
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pagePath = filepath.Join(pagePath, d.Type.BaseName+d.Type.MediaType.FullSuffix())
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}
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} else if d.Kind == KindPage {
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if d.ExpandedPermalink != "" {
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pagePath = filepath.Join(pagePath, d.ExpandedPermalink)
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} else {
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if d.Dir != "" {
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pagePath = filepath.Join(pagePath, d.Dir)
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}
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if d.BaseName != "" {
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pagePath = filepath.Join(pagePath, d.BaseName)
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}
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}
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if d.Addends != "" {
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pagePath = filepath.Join(pagePath, d.Addends)
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}
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if isUgly {
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pagePath += d.Type.MediaType.FullSuffix()
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} else {
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pagePath = filepath.Join(pagePath, d.Type.BaseName+d.Type.MediaType.FullSuffix())
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}
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if d.LangPrefix != "" {
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pagePath = filepath.Join(d.LangPrefix, pagePath)
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}
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} else {
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if d.Addends != "" {
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pagePath = filepath.Join(pagePath, d.Addends)
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}
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needsBase = needsBase && d.Addends == ""
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// No permalink expansion etc. for node type pages (for now)
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base := ""
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if needsBase || !isUgly {
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base = helpers.FilePathSeparator + d.Type.BaseName
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}
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pagePath += base + d.Type.MediaType.FullSuffix()
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if d.LangPrefix != "" {
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pagePath = filepath.Join(d.LangPrefix, pagePath)
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}
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}
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pagePath = filepath.Join(helpers.FilePathSeparator, pagePath)
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// Note: MakePathSanitized will lower case the path if
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// disablePathToLower isn't set.
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return d.PathSpec.MakePathSanitized(pagePath)
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}
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func (p *Page) createRelativeTargetPath() string {
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if len(p.outputFormats) == 0 {
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if p.Kind == kindUnknown {
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panic(fmt.Sprintf("Page %q has unknown kind", p.title))
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}
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panic(fmt.Sprintf("Page %q missing output format(s)", p.title))
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}
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// Choose the main output format. In most cases, this will be HTML.
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f := p.outputFormats[0]
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return p.createRelativeTargetPathForOutputFormat(f)
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}
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func (p *Page) createRelativePermalinkForOutputFormat(f output.Format) string {
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return p.s.PathSpec.URLizeFilename(p.createRelativeTargetPathForOutputFormat(f))
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}
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func (p *Page) createRelativeTargetPathForOutputFormat(f output.Format) string {
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tp, err := p.createTargetPath(f, p.s.owner.IsMultihost())
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if err != nil {
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p.s.Log.ERROR.Printf("Failed to create permalink for page %q: %s", p.FullFilePath(), err)
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return ""
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}
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// For /index.json etc. we must use the full path.
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if strings.HasSuffix(f.BaseFilename(), "html") {
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tp = strings.TrimSuffix(tp, f.BaseFilename())
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}
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return tp
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}
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