Add a page template func

Fixes #9339

markup/converter/converter.go

@@ -15,6 +15,7 @@ package converter
 
 import (
 	"bytes"
+	"context"
 
 	"github.com/gohugoio/hugo/common/hexec"
 	"github.com/gohugoio/hugo/common/loggers"
@@ -141,6 +142,9 @@ type DocumentContext struct {
 
 // RenderContext holds contextual information about the content to render.
 type RenderContext struct {
+	// Ctx is the context.Context for the current Page render.
+	Ctx context.Context
+
 	// Src is the content to render.
 	Src []byte
 

markup/converter/hooks/hooks.go

@@ -14,6 +14,7 @@
 package hooks
 
 import (
+	"context"
 	"io"
 
 	"github.com/gohugoio/hugo/common/hugio"
@@ -85,12 +86,12 @@ type AttributesOptionsSliceProvider interface {
 }
 
 type LinkRenderer interface {
-	RenderLink(w io.Writer, ctx LinkContext) error
+	RenderLink(cctx context.Context, w io.Writer, ctx LinkContext) error
 	identity.Provider
 }
 
 type CodeBlockRenderer interface {
-	RenderCodeblock(w hugio.FlexiWriter, ctx CodeblockContext) error
+	RenderCodeblock(cctx context.Context, w hugio.FlexiWriter, ctx CodeblockContext) error
 	identity.Provider
 }
 
@@ -119,7 +120,7 @@ type HeadingContext interface {
 // HeadingRenderer describes a uniquely identifiable rendering hook.
 type HeadingRenderer interface {
 	// Render writes the rendered content to w using the data in w.
-	RenderHeading(w io.Writer, ctx HeadingContext) error
+	RenderHeading(cctx context.Context, w io.Writer, ctx HeadingContext) error
 	identity.Provider
 }
 

markup/goldmark/codeblocks/render.go

@@ -124,6 +124,7 @@ func (r *htmlRenderer) renderCodeBlock(w util.BufWriter, src []byte, node ast.No
 	cr := renderer.(hooks.CodeBlockRenderer)
 
 	err := cr.RenderCodeblock(
+		ctx.RenderContext().Ctx,
 		w,
 		cbctx,
 	)

markup/goldmark/render_hooks.go

@@ -181,6 +181,7 @@ func (r *hookedRenderer) renderImage(w util.BufWriter, source []byte, node ast.N
 	attrs := r.filterInternalAttributes(n.Attributes())
 
 	err := lr.RenderLink(
+		ctx.RenderContext().Ctx,
 		w,
 		imageLinkContext{
 			linkContext: linkContext{
@@ -271,6 +272,7 @@ func (r *hookedRenderer) renderLink(w util.BufWriter, source []byte, node ast.No
 	ctx.Buffer.Truncate(pos)
 
 	err := lr.RenderLink(
+		ctx.RenderContext().Ctx,
 		w,
 		linkContext{
 			page:             ctx.DocumentContext().Document,
@@ -340,6 +342,7 @@ func (r *hookedRenderer) renderAutoLink(w util.BufWriter, source []byte, node as
 	}
 
 	err := lr.RenderLink(
+		ctx.RenderContext().Ctx,
 		w,
 		linkContext{
 			page:             ctx.DocumentContext().Document,
@@ -428,6 +431,7 @@ func (r *hookedRenderer) renderHeading(w util.BufWriter, source []byte, node ast
 	anchor := anchori.([]byte)
 
 	err := hr.RenderHeading(
+		ctx.RenderContext().Ctx,
 		w,
 		headingContext{
 			page:             ctx.DocumentContext().Document,

markup/highlight/highlight.go

@@ -14,6 +14,7 @@
 package highlight
 
 import (
+	"context"
 	"fmt"
 	gohtml "html"
 	"html/template"
@@ -122,7 +123,7 @@ func (h chromaHighlighter) HighlightCodeBlock(ctx hooks.CodeblockContext, opts a
 	}, nil
 }
 
-func (h chromaHighlighter) RenderCodeblock(w hugio.FlexiWriter, ctx hooks.CodeblockContext) error {
+func (h chromaHighlighter) RenderCodeblock(cctx context.Context, w hugio.FlexiWriter, ctx hooks.CodeblockContext) error {
 	cfg := h.cfg
 
 	attributes := ctx.(hooks.AttributesOptionsSliceProvider).AttributesSlice()