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// 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 hugolib
import (
"context"
"fmt"
"path/filepath"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/source"
"github.com/gohugoio/hugo/hugofs/files"
"golang.org/x/sync/errgroup"
"github.com/gohugoio/hugo/common/herrors"
"github.com/gohugoio/hugo/hugofs"
)
func newPagesProcessor(h *HugoSites, sp *source.SourceSpec) *pagesProcessor {
procs := make(map[string]pagesCollectorProcessorProvider)
for _, s := range h.Sites {
procs[s.Lang()] = &sitePagesProcessor{
m: s.pageMap,
errorSender: s.h,
itemChan: make(chan interface{}, config.GetNumWorkerMultiplier()*2),
}
}
return &pagesProcessor{
procs: procs,
}
}
type pagesCollectorProcessorProvider interface {
Process(item any) error
Start(ctx context.Context) context.Context
Wait() error
}
type pagesProcessor struct {
// Per language/Site
procs map[string]pagesCollectorProcessorProvider
}
func (proc *pagesProcessor) Process(item any) error {
switch v := item.(type) {
// Page bundles mapped to their language.
case pageBundles:
for _, vv := range v {
proc.getProcFromFi(vv.header).Process(vv)
}
case hugofs.FileMetaInfo:
proc.getProcFromFi(v).Process(v)
default:
panic(fmt.Sprintf("unrecognized item type in Process: %T", item))
}
return nil
}
func (proc *pagesProcessor) Start(ctx context.Context) context.Context {
for _, p := range proc.procs {
ctx = p.Start(ctx)
}
return ctx
}
func (proc *pagesProcessor) Wait() error {
var err error
for _, p := range proc.procs {
if e := p.Wait(); e != nil {
err = e
}
}
return err
}
func (proc *pagesProcessor) getProcFromFi(fi hugofs.FileMetaInfo) pagesCollectorProcessorProvider {
if p, found := proc.procs[fi.Meta().Lang]; found {
return p
}
return defaultPageProcessor
}
type nopPageProcessor int
func (nopPageProcessor) Process(item any) error {
return nil
}
func (nopPageProcessor) Start(ctx context.Context) context.Context {
return context.Background()
}
func (nopPageProcessor) Wait() error {
return nil
}
var defaultPageProcessor = new(nopPageProcessor)
type sitePagesProcessor struct {
m *pageMap
errorSender herrors.ErrorSender
ctx context.Context
itemChan chan any
itemGroup *errgroup.Group
}
func (p *sitePagesProcessor) Process(item any) error {
select {
case <-p.ctx.Done():
return nil
default:
p.itemChan <- item
}
return nil
}
func (p *sitePagesProcessor) Start(ctx context.Context) context.Context {
p.itemGroup, ctx = errgroup.WithContext(ctx)
p.ctx = ctx
p.itemGroup.Go(func() error {
for item := range p.itemChan {
if err := p.doProcess(item); err != nil {
return err
}
}
return nil
})
return ctx
}
func (p *sitePagesProcessor) Wait() error {
close(p.itemChan)
return p.itemGroup.Wait()
}
func (p *sitePagesProcessor) copyFile(fim hugofs.FileMetaInfo) error {
meta := fim.Meta()
f, err := meta.Open()
if err != nil {
return fmt.Errorf("copyFile: failed to open: %w", err)
}
s := p.m.s
target := filepath.Join(s.PathSpec.GetTargetLanguageBasePath(), meta.Path)
defer f.Close()
fs := s.PublishFsStatic
return s.publish(&s.PathSpec.ProcessingStats.Files, target, f, fs)
}
func (p *sitePagesProcessor) doProcess(item any) error {
m := p.m
switch v := item.(type) {
case *fileinfoBundle:
if err := m.AddFilesBundle(v.header, v.resources...); err != nil {
return err
}
case hugofs.FileMetaInfo:
if p.shouldSkip(v) {
return nil
}
meta := v.Meta()
classifier := meta.Classifier
switch classifier {
case files.ContentClassContent:
if err := m.AddFilesBundle(v); err != nil {
return err
}
case files.ContentClassFile:
if err := p.copyFile(v); err != nil {
return err
}
default:
panic(fmt.Sprintf("invalid classifier: %q", classifier))
}
default:
panic(fmt.Sprintf("unrecognized item type in Process: %T", item))
}
return nil
}
func (p *sitePagesProcessor) shouldSkip(fim hugofs.FileMetaInfo) bool {
return p.m.s.conf.IsLangDisabled(fim.Meta().Lang)
}
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