mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
316 lines
8.3 KiB
Go
316 lines
8.3 KiB
Go
// Copyright 2016 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"
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"path/filepath"
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"strings"
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"github.com/gohugoio/hugo/cache"
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)
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// PageCollections contains the page collections for a site.
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type PageCollections struct {
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// Includes only pages of all types, and only pages in the current language.
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Pages Pages
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// Includes all pages in all languages, including the current one.
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// Includes pages of all types.
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AllPages Pages
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// A convenience cache for the traditional index types, taxonomies, home page etc.
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// This is for the current language only.
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indexPages Pages
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// A convenience cache for the regular pages.
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// This is for the current language only.
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RegularPages Pages
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// A convenience cache for the all the regular pages.
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AllRegularPages Pages
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// Includes absolute all pages (of all types), including drafts etc.
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rawAllPages Pages
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// Includes headless bundles, i.e. bundles that produce no output for its content page.
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headlessPages Pages
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pageIndex *cache.Lazy
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}
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// Get initializes the index if not already done so, then
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// looks up the given page ref, returns nil if no value found.
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func (c *PageCollections) getFromCache(ref string) (*Page, error) {
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v, found, err := c.pageIndex.Get(ref)
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if err != nil {
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return nil, err
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}
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if !found {
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return nil, nil
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}
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p := v.(*Page)
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if p != ambiguityFlag {
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return p, nil
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}
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return nil, fmt.Errorf("page reference %q is ambiguous", ref)
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}
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var ambiguityFlag = &Page{Kind: kindUnknown, title: "ambiguity flag"}
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func (c *PageCollections) refreshPageCaches() {
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c.indexPages = c.findPagesByKindNotIn(KindPage, c.Pages)
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c.RegularPages = c.findPagesByKindIn(KindPage, c.Pages)
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c.AllRegularPages = c.findPagesByKindIn(KindPage, c.AllPages)
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indexLoader := func() (map[string]interface{}, error) {
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index := make(map[string]interface{})
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add := func(ref string, p *Page) {
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existing := index[ref]
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if existing == nil {
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index[ref] = p
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} else if existing != ambiguityFlag && existing != p {
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index[ref] = ambiguityFlag
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}
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}
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for _, pageCollection := range []Pages{c.RegularPages, c.headlessPages} {
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for _, p := range pageCollection {
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sourceRef := p.absoluteSourceRef()
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if sourceRef != "" {
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// index the canonical ref
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// e.g. /section/article.md
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add(sourceRef, p)
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}
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// Ref/Relref supports this potentially ambiguous lookup.
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add(p.Source.LogicalName(), p)
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translationBaseName := p.Source.TranslationBaseName()
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dir, _ := path.Split(sourceRef)
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dir = strings.TrimSuffix(dir, "/")
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if translationBaseName == "index" {
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add(dir, p)
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add(path.Base(dir), p)
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} else {
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add(translationBaseName, p)
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}
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// We need a way to get to the current language version.
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pathWithNoExtensions := path.Join(dir, translationBaseName)
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add(pathWithNoExtensions, p)
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}
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}
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for _, p := range c.indexPages {
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// index the canonical, unambiguous ref for any backing file
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// e.g. /section/_index.md
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sourceRef := p.absoluteSourceRef()
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if sourceRef != "" {
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add(sourceRef, p)
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}
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ref := path.Join(p.sections...)
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// index the canonical, unambiguous virtual ref
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// e.g. /section
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// (this may already have been indexed above)
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add("/"+ref, p)
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}
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return index, nil
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}
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c.pageIndex = cache.NewLazy(indexLoader)
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}
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func newPageCollections() *PageCollections {
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return &PageCollections{}
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}
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func newPageCollectionsFromPages(pages Pages) *PageCollections {
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return &PageCollections{rawAllPages: pages}
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}
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// This is an adapter func for the old API with Kind as first argument.
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// This is invoked when you do .Site.GetPage. We drop the Kind and fails
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// if there are more than 2 arguments, which would be ambigous.
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func (c *PageCollections) getPageOldVersion(ref ...string) (*Page, error) {
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var refs []string
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for _, r := range ref {
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// A common construct in the wild is
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// .Site.GetPage "home" "" or
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// .Site.GetPage "home" "/"
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if r != "" && r != "/" {
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refs = append(refs, r)
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}
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}
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var key string
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if len(refs) > 2 {
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// This was allowed in Hugo <= 0.44, but we cannot support this with the
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// new API. This should be the most unusual case.
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return nil, fmt.Errorf(`too many arguments to .Site.GetPage: %v. Use lookups on the form {{ .Site.GetPage "/posts/mypage-md" }}`, ref)
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}
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if len(refs) == 0 || refs[0] == KindHome {
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key = "/"
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} else if len(refs) == 1 {
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key = refs[0]
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} else {
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key = refs[1]
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}
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key = filepath.ToSlash(key)
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if !strings.HasPrefix(key, "/") {
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key = "/" + key
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}
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return c.getPageNew(nil, key)
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}
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// Only used in tests.
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func (c *PageCollections) getPage(typ string, sections ...string) *Page {
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refs := append([]string{typ}, path.Join(sections...))
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p, _ := c.getPageOldVersion(refs...)
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return p
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}
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// Ref is either unix-style paths (i.e. callers responsible for
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// calling filepath.ToSlash as necessary) or shorthand refs.
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func (c *PageCollections) getPageNew(context *Page, ref string) (*Page, error) {
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// Absolute (content root relative) reference.
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if strings.HasPrefix(ref, "/") {
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if p, err := c.getFromCache(ref); err == nil && p != nil {
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return p, nil
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}
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} else if context != nil {
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// Try the page-relative path.
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ppath := path.Join("/", strings.Join(context.sections, "/"), ref)
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if p, err := c.getFromCache(ppath); err == nil && p != nil {
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return p, nil
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}
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}
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if !strings.HasPrefix(ref, "/") {
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// Many people will have "post/foo.md" in their content files.
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if p, err := c.getFromCache("/" + ref); err == nil && p != nil {
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return p, nil
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}
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}
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// Last try.
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ref = strings.TrimPrefix(ref, "/")
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context, err := c.getFromCache(ref)
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if err != nil {
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if context != nil {
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return nil, fmt.Errorf("failed to resolve page relative to page %q: %s", context.absoluteSourceRef(), err)
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}
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return nil, fmt.Errorf("failed to resolve page: %s", err)
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}
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return context, nil
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}
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func (*PageCollections) findPagesByKindIn(kind string, inPages Pages) Pages {
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var pages Pages
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for _, p := range inPages {
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if p.Kind == kind {
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pages = append(pages, p)
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}
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}
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return pages
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}
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func (*PageCollections) findFirstPageByKindIn(kind string, inPages Pages) *Page {
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for _, p := range inPages {
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if p.Kind == kind {
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return p
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}
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}
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return nil
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}
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func (*PageCollections) findPagesByKindNotIn(kind string, inPages Pages) Pages {
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var pages Pages
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for _, p := range inPages {
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if p.Kind != kind {
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pages = append(pages, p)
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}
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}
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return pages
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}
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func (c *PageCollections) findPagesByKind(kind string) Pages {
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return c.findPagesByKindIn(kind, c.Pages)
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}
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func (c *PageCollections) addPage(page *Page) {
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c.rawAllPages = append(c.rawAllPages, page)
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}
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func (c *PageCollections) removePageFilename(filename string) {
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if i := c.rawAllPages.findPagePosByFilename(filename); i >= 0 {
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c.clearResourceCacheForPage(c.rawAllPages[i])
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c.rawAllPages = append(c.rawAllPages[:i], c.rawAllPages[i+1:]...)
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}
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}
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func (c *PageCollections) removePage(page *Page) {
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if i := c.rawAllPages.findPagePos(page); i >= 0 {
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c.clearResourceCacheForPage(c.rawAllPages[i])
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c.rawAllPages = append(c.rawAllPages[:i], c.rawAllPages[i+1:]...)
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}
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}
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func (c *PageCollections) findPagesByShortcode(shortcode string) Pages {
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var pages Pages
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for _, p := range c.rawAllPages {
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if p.shortcodeState != nil {
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if _, ok := p.shortcodeState.nameSet[shortcode]; ok {
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pages = append(pages, p)
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}
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}
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}
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return pages
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}
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func (c *PageCollections) replacePage(page *Page) {
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// will find existing page that matches filepath and remove it
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c.removePage(page)
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c.addPage(page)
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}
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func (c *PageCollections) clearResourceCacheForPage(page *Page) {
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if len(page.Resources) > 0 {
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first := page.Resources[0]
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dir := path.Dir(first.RelPermalink())
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dir = strings.TrimPrefix(dir, page.LanguagePrefix())
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// This is done to keep the memory usage in check when doing live reloads.
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page.s.ResourceSpec.DeleteCacheByPrefix(dir)
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}
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}
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