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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 (
"github.com/gohugoio/hugo/markup/converter"
"github.com/gohugoio/hugo/output"
"github.com/gohugoio/hugo/resources/page"
"github.com/gohugoio/hugo/resources/resource"
)
func newPageOutput(
ps *pageState,
pp pagePaths,
f output.Format,
render bool) *pageOutput {
var targetPathsProvider targetPathsHolder
var linksProvider resource.ResourceLinksProvider
ft, found := pp.targetPaths[f.Name]
if !found {
// Link to the main output format
ft = pp.targetPaths[pp.firstOutputFormat.Format.Name]
}
targetPathsProvider = ft
linksProvider = ft
var paginatorProvider page.PaginatorProvider = page.NopPage
var pag *pagePaginator
if render && ps.IsNode() {
pag = newPagePaginator(ps)
paginatorProvider = pag
}
providers := struct {
page.PaginatorProvider
resource.ResourceLinksProvider
targetPather
}{
paginatorProvider,
linksProvider,
targetPathsProvider,
}
po := &pageOutput{
f: f,
pagePerOutputProviders: providers,
ContentProvider: page.NopPage,
TableOfContentsProvider: page.NopPage,
render: render,
paginator: pag,
}
return po
}
// We create a pageOutput for every output format combination, even if this
// particular page isn't configured to be rendered to that format.
type pageOutput struct {
// Set if this page isn't configured to be rendered to this format.
render bool
f output.Format
// Only set if render is set.
// Note that this will be lazily initialized, so only used if actually
// used in template(s).
paginator *pagePaginator
// These interface provides the functionality that is specific for this
// output format.
pagePerOutputProviders
page.ContentProvider
page.TableOfContentsProvider
// May be nil.
cp *pageContentOutput
}
func (o *pageOutput) initRenderHooks() error {
if o.cp == nil {
return nil
}
var initErr error
o.cp.renderHooks.init.Do(func() {
ps := o.cp.p
c := ps.getContentConverter()
if c == nil || !c.Supports(converter.FeatureRenderHooks) {
return
}
h, err := ps.createRenderHooks(o.f)
if err != nil {
initErr = err
return
}
o.cp.renderHooks.hooks = h
if !o.cp.renderHooksHaveVariants || h.IsZero() {
// Check if there is a different render hooks template
// for any of the other page output formats.
// If not, we can reuse this.
for _, po := range ps.pageOutputs {
if po.f.Name != o.f.Name {
h2, err := ps.createRenderHooks(po.f)
if err != nil {
initErr = err
return
}
if h2.IsZero() {
continue
}
if o.cp.renderHooks.hooks.IsZero() {
o.cp.renderHooks.hooks = h2
}
o.cp.renderHooksHaveVariants = !h2.Eq(o.cp.renderHooks.hooks)
if o.cp.renderHooksHaveVariants {
break
}
}
}
}
})
return initErr
}
func (p *pageOutput) initContentProvider(cp *pageContentOutput) {
if cp == nil {
return
}
p.ContentProvider = cp
p.TableOfContentsProvider = cp
p.cp = cp
}
func (p *pageOutput) enablePlaceholders() {
if p.cp != nil {
p.cp.enablePlaceholders()
}
}
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