mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
360 lines
8.5 KiB
Go
360 lines
8.5 KiB
Go
// Copyright 2019 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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"context"
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"fmt"
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"path"
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"strings"
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"sync"
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"github.com/gohugoio/hugo/hugolib/doctree"
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"github.com/gohugoio/hugo/config"
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"github.com/gohugoio/hugo/tpl"
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"github.com/gohugoio/hugo/resources/kinds"
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"github.com/gohugoio/hugo/resources/page"
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)
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type siteRenderContext struct {
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cfg *BuildCfg
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// languageIdx is the zero based index of the site.
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languageIdx int
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// Zero based index for all output formats combined.
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sitesOutIdx int
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// Zero based index of the output formats configured within a Site.
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// Note that these outputs are sorted.
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outIdx int
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multihost bool
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}
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// Whether to render 404.html, robotsTXT.txt and similar.
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// These are useually rendered once in the root of public.
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func (s siteRenderContext) shouldRenderStandalonePage(kind string) bool {
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if s.multihost || kind == kinds.KindSitemap {
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// 1 per site
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return s.outIdx == 0
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}
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if kind == kinds.KindStatus404 {
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// 1 for all output formats
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return s.outIdx == 0
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}
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// 1 for all sites and output formats.
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return s.languageIdx == 0 && s.outIdx == 0
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}
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// renderPages renders pages concurrently.
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func (s *Site) renderPages(ctx *siteRenderContext) error {
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numWorkers := config.GetNumWorkerMultiplier()
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results := make(chan error)
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pages := make(chan *pageState, numWorkers) // buffered for performance
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errs := make(chan error)
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go s.errorCollator(results, errs)
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wg := &sync.WaitGroup{}
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for i := 0; i < numWorkers; i++ {
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wg.Add(1)
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go pageRenderer(ctx, s, pages, results, wg)
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}
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cfg := ctx.cfg
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w := &doctree.NodeShiftTreeWalker[contentNodeI]{
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Tree: s.pageMap.treePages,
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Handle: func(key string, n contentNodeI, match doctree.DimensionFlag) (bool, error) {
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if p, ok := n.(*pageState); ok {
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if cfg.shouldRender(p) {
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select {
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case <-s.h.Done():
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return true, nil
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default:
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pages <- p
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}
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}
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}
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return false, nil
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},
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}
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if err := w.Walk(context.Background()); err != nil {
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return err
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}
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close(pages)
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wg.Wait()
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close(results)
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err := <-errs
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if err != nil {
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return fmt.Errorf("failed to render pages: %w", err)
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}
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return nil
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}
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func pageRenderer(
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ctx *siteRenderContext,
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s *Site,
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pages <-chan *pageState,
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results chan<- error,
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wg *sync.WaitGroup,
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) {
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defer wg.Done()
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for p := range pages {
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if p.m.isStandalone() && !ctx.shouldRenderStandalonePage(p.Kind()) {
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continue
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}
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if p.m.pageConfig.Build.PublishResources {
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if err := p.renderResources(); err != nil {
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s.SendError(p.errorf(err, "failed to render page resources"))
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continue
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}
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}
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if !p.render {
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// Nothing more to do for this page.
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continue
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}
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templ, found, err := p.resolveTemplate()
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if err != nil {
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s.SendError(p.errorf(err, "failed to resolve template"))
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continue
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}
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if !found {
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s.Log.Trace(
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func() string {
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return fmt.Sprintf("no layout for kind %q found", p.Kind())
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},
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)
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// Don't emit warning for missing 404 etc. pages.
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if !p.m.isStandalone() {
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s.logMissingLayout("", p.Layout(), p.Kind(), p.f.Name)
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}
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continue
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}
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targetPath := p.targetPaths().TargetFilename
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s.Log.Trace(
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func() string {
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return fmt.Sprintf("rendering outputFormat %q kind %q using layout %q to %q", p.pageOutput.f.Name, p.Kind(), templ.Name(), targetPath)
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},
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)
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var d any = p
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switch p.Kind() {
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case kinds.KindSitemapIndex:
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d = s.h.Sites
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}
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if err := s.renderAndWritePage(&s.PathSpec.ProcessingStats.Pages, "page "+p.Title(), targetPath, p, d, templ); err != nil {
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results <- err
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}
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if p.paginator != nil && p.paginator.current != nil {
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if err := s.renderPaginator(p, templ); err != nil {
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results <- err
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}
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}
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}
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}
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func (s *Site) logMissingLayout(name, layout, kind, outputFormat string) {
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log := s.Log.Warn()
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if name != "" && infoOnMissingLayout[name] {
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log = s.Log.Info()
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}
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errMsg := "You should create a template file which matches Hugo Layouts Lookup Rules for this combination."
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var args []any
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msg := "found no layout file for"
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if outputFormat != "" {
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msg += " %q"
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args = append(args, outputFormat)
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}
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if layout != "" {
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msg += " for layout %q"
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args = append(args, layout)
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}
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if kind != "" {
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msg += " for kind %q"
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args = append(args, kind)
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}
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if name != "" {
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msg += " for %q"
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args = append(args, name)
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}
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msg += ": " + errMsg
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log.Logf(msg, args...)
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}
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// renderPaginator must be run after the owning Page has been rendered.
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func (s *Site) renderPaginator(p *pageState, templ tpl.Template) error {
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paginatePath := s.conf.PaginatePath
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d := p.targetPathDescriptor
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f := p.s.rc.Format
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d.Type = f
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if p.paginator.current == nil || p.paginator.current != p.paginator.current.First() {
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panic(fmt.Sprintf("invalid paginator state for %q", p.pathOrTitle()))
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}
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if f.IsHTML {
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// Write alias for page 1
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d.Addends = fmt.Sprintf("/%s/%d", paginatePath, 1)
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targetPaths := page.CreateTargetPaths(d)
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if err := s.writeDestAlias(targetPaths.TargetFilename, p.Permalink(), f, p); err != nil {
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return err
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}
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}
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// Render pages for the rest
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for current := p.paginator.current.Next(); current != nil; current = current.Next() {
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p.paginator.current = current
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d.Addends = fmt.Sprintf("/%s/%d", paginatePath, current.PageNumber())
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targetPaths := page.CreateTargetPaths(d)
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if err := s.renderAndWritePage(
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&s.PathSpec.ProcessingStats.PaginatorPages,
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p.Title(),
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targetPaths.TargetFilename, p, p, templ); err != nil {
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return err
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}
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}
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return nil
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}
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// renderAliases renders shell pages that simply have a redirect in the header.
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func (s *Site) renderAliases() error {
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w := &doctree.NodeShiftTreeWalker[contentNodeI]{
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Tree: s.pageMap.treePages,
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Handle: func(key string, n contentNodeI, match doctree.DimensionFlag) (bool, error) {
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p := n.(*pageState)
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// We cannot alias a page that's not rendered.
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if p.m.noLink() {
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return false, nil
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}
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if len(p.Aliases()) == 0 {
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return false, nil
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}
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pathSeen := make(map[string]bool)
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for _, of := range p.OutputFormats() {
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if !of.Format.IsHTML {
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continue
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}
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f := of.Format
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if pathSeen[f.Path] {
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continue
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}
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pathSeen[f.Path] = true
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plink := of.Permalink()
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for _, a := range p.Aliases() {
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isRelative := !strings.HasPrefix(a, "/")
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if isRelative {
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// Make alias relative, where "." will be on the
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// same directory level as the current page.
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basePath := path.Join(p.targetPaths().SubResourceBaseLink, "..")
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a = path.Join(basePath, a)
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} else {
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// Make sure AMP and similar doesn't clash with regular aliases.
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a = path.Join(f.Path, a)
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}
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if s.conf.C.IsUglyURLSection(p.Section()) && !strings.HasSuffix(a, ".html") {
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a += ".html"
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}
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lang := p.Language().Lang
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if s.h.Configs.IsMultihost && !strings.HasPrefix(a, "/"+lang) {
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// These need to be in its language root.
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a = path.Join(lang, a)
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}
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err := s.writeDestAlias(a, plink, f, p)
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if err != nil {
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return true, err
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}
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}
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}
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return false, nil
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},
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}
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return w.Walk(context.TODO())
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}
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// renderMainLanguageRedirect creates a redirect to the main language home,
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// depending on if it lives in sub folder (e.g. /en) or not.
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func (s *Site) renderMainLanguageRedirect() error {
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if s.h.Conf.IsMultihost() || !(s.h.Conf.DefaultContentLanguageInSubdir() || s.h.Conf.IsMultiLingual()) {
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// No need for a redirect
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return nil
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}
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html, found := s.conf.OutputFormats.Config.GetByName("html")
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if found {
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mainLang := s.conf.DefaultContentLanguage
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if s.conf.DefaultContentLanguageInSubdir {
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mainLangURL := s.PathSpec.AbsURL(mainLang+"/", false)
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s.Log.Debugf("Write redirect to main language %s: %s", mainLang, mainLangURL)
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if err := s.publishDestAlias(true, "/", mainLangURL, html, nil); err != nil {
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return err
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}
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} else {
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mainLangURL := s.PathSpec.AbsURL("", false)
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s.Log.Debugf("Write redirect to main language %s: %s", mainLang, mainLangURL)
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if err := s.publishDestAlias(true, mainLang, mainLangURL, html, nil); err != nil {
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return err
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}
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}
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}
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return nil
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}
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