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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 (
"fmt"
"github.com/gohugoio/hugo/output"
"github.com/gohugoio/hugo/parser/pageparser"
)
var (
internalSummaryDividerBase = "HUGOMORE42"
internalSummaryDividerBaseBytes = []byte(internalSummaryDividerBase)
internalSummaryDividerPre = []byte("\n\n" + internalSummaryDividerBase + "\n\n")
)
// The content related items on a Page.
type pageContent struct {
selfLayout string
truncated bool
cmap *pageContentMap
source rawPageContent
}
// returns the content to be processed by Goldmark or similar.
func (p pageContent) contentToRender(parsed pageparser.Result, pm *pageContentMap, renderedShortcodes map[string]string) []byte {
source := parsed.Input()
c := make([]byte, 0, len(source)+(len(source)/10))
for _, it := range pm.items {
switch v := it.(type) {
case pageparser.Item:
c = append(c, source[v.Pos():v.Pos()+len(v.Val(source))]...)
case pageContentReplacement:
c = append(c, v.val...)
case *shortcode:
if !v.insertPlaceholder() {
// Insert the rendered shortcode.
renderedShortcode, found := renderedShortcodes[v.placeholder]
if !found {
// This should never happen.
panic(fmt.Sprintf("rendered shortcode %q not found", v.placeholder))
}
c = append(c, []byte(renderedShortcode)...)
} else {
// Insert the placeholder so we can insert the content after
// markdown processing.
c = append(c, []byte(v.placeholder)...)
}
default:
panic(fmt.Sprintf("unknown item type %T", it))
}
}
return c
}
func (p pageContent) selfLayoutForOutput(f output.Format) string {
if p.selfLayout == "" {
return ""
}
return p.selfLayout + f.Name
}
type rawPageContent struct {
hasSummaryDivider bool
// The AST of the parsed page. Contains information about:
// shortcodes, front matter, summary indicators.
parsed pageparser.Result
// Returns the position in bytes after any front matter.
posMainContent int
// These are set if we're able to determine this from the source.
posSummaryEnd int
posBodyStart int
}
type pageContentReplacement struct {
val []byte
source pageparser.Item
}
type pageContentMap struct {
// If not, we can skip any pre-rendering of shortcodes.
hasMarkdownShortcode bool
// Indicates whether we must do placeholder replacements.
hasNonMarkdownShortcode bool
// *shortcode, pageContentReplacement or pageparser.Item
items []any
}
func (p *pageContentMap) AddBytes(item pageparser.Item) {
p.items = append(p.items, item)
}
func (p *pageContentMap) AddReplacement(val []byte, source pageparser.Item) {
p.items = append(p.items, pageContentReplacement{val: val, source: source})
}
func (p *pageContentMap) AddShortcode(s *shortcode) {
p.items = append(p.items, s)
if s.insertPlaceholder() {
p.hasNonMarkdownShortcode = true
} else {
p.hasMarkdownShortcode = true
}
}
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