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Add render hooks for inline and block passthrough snippets
Fixes #11927
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Original file line number | Diff line number | Diff line change |
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// Copyright 2024 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. | ||
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package passthrough | ||
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import ( | ||
"bytes" | ||
"sync" | ||
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htext "github.com/gohugoio/hugo/common/text" | ||
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"github.com/gohugoio/hugo-goldmark-extensions/passthrough" | ||
Check failure on line 22 in markup/goldmark/passthrough/passthrough.go GitHub Actions / test (1.21.x, macos-latest)
Check failure on line 22 in markup/goldmark/passthrough/passthrough.go GitHub Actions / test (1.22.x, macos-latest)
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"github.com/gohugoio/hugo/markup/converter/hooks" | ||
"github.com/gohugoio/hugo/markup/goldmark/goldmark_config" | ||
"github.com/gohugoio/hugo/markup/goldmark/internal/render" | ||
"github.com/gohugoio/hugo/markup/internal/attributes" | ||
"github.com/yuin/goldmark" | ||
"github.com/yuin/goldmark/ast" | ||
"github.com/yuin/goldmark/renderer" | ||
"github.com/yuin/goldmark/util" | ||
) | ||
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func New(cfg goldmark_config.Passthrough) goldmark.Extender { | ||
if !cfg.Enable { | ||
return nil | ||
} | ||
return &passthroughExtension{cfg: cfg} | ||
} | ||
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type ( | ||
passthroughExtension struct { | ||
cfg goldmark_config.Passthrough | ||
} | ||
htmlRenderer struct{} | ||
) | ||
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func (e *passthroughExtension) Extend(m goldmark.Markdown) { | ||
configuredInlines := e.cfg.Delimiters.Inline | ||
configuredBlocks := e.cfg.Delimiters.Block | ||
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inlineDelimiters := make([]passthrough.Delimiters, len(configuredInlines)) | ||
blockDelimiters := make([]passthrough.Delimiters, len(configuredBlocks)) | ||
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for i, d := range configuredInlines { | ||
inlineDelimiters[i] = passthrough.Delimiters{ | ||
Open: d[0], | ||
Close: d[1], | ||
} | ||
} | ||
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for i, d := range configuredBlocks { | ||
blockDelimiters[i] = passthrough.Delimiters{ | ||
Open: d[0], | ||
Close: d[1], | ||
} | ||
} | ||
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pse := passthrough.New( | ||
passthrough.Config{ | ||
InlineDelimiters: inlineDelimiters, | ||
BlockDelimiters: blockDelimiters, | ||
}, | ||
) | ||
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pse.Extend(m) | ||
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// Set up render hooks if configured. | ||
// Upstream passthrough inline = 101 | ||
// Upstream passthrough block = 99 | ||
m.Renderer().AddOptions(renderer.WithNodeRenderers( | ||
util.Prioritized(newHTMLRenderer(), 90), | ||
)) | ||
} | ||
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func newHTMLRenderer() renderer.NodeRenderer { | ||
r := &htmlRenderer{} | ||
return r | ||
} | ||
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func (r *htmlRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) { | ||
reg.Register(passthrough.KindPassthroughBlock, r.renderPassthroughBlock) | ||
reg.Register(passthrough.KindPassthroughInline, r.renderPassthroughBlock) | ||
} | ||
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func (r *htmlRenderer) renderPassthroughBlock(w util.BufWriter, src []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { | ||
ctx := w.(*render.Context) | ||
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if entering { | ||
return ast.WalkContinue, nil | ||
} | ||
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var ( | ||
s string | ||
typ string | ||
delims *passthrough.Delimiters | ||
) | ||
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switch nn := node.(type) { | ||
case *passthrough.PassthroughInline: | ||
s = string(nn.Text(src)) | ||
typ = "inline" | ||
delims = nn.Delimiters | ||
case (*passthrough.PassthroughBlock): | ||
l := nn.Lines().Len() | ||
var buff bytes.Buffer | ||
for i := 0; i < l; i++ { | ||
line := nn.Lines().At(i) | ||
buff.Write(line.Value(src)) | ||
} | ||
s = buff.String() | ||
typ = "block" | ||
delims = nn.Delimiters | ||
} | ||
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renderer := ctx.RenderContext().GetRenderer(hooks.PassthroughRendererType, typ) | ||
if renderer == nil { | ||
// Write the raw content if no renderer is found. | ||
ctx.WriteString(s) | ||
return ast.WalkContinue, nil | ||
} | ||
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// Inline and block passthroughs share the same ordinal counter. | ||
ordinal := ctx.GetAndIncrementOrdinal(passthrough.KindPassthroughBlock) | ||
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// Trim the delimiters. | ||
s = s[len(delims.Open) : len(s)-len(delims.Close)] | ||
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pctx := &passthroughContext{ | ||
ordinal: ordinal, | ||
page: ctx.DocumentContext().Document, | ||
pageInner: r.getPageInner(ctx), | ||
inner: s, | ||
typ: typ, | ||
} | ||
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pctx.createPos = func() htext.Position { | ||
if resolver, ok := renderer.(hooks.ElementPositionResolver); ok { | ||
return resolver.ResolvePosition(pctx) | ||
} | ||
return htext.Position{ | ||
Filename: ctx.DocumentContext().Filename, | ||
LineNumber: 1, | ||
ColumnNumber: 1, | ||
} | ||
} | ||
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pr := renderer.(hooks.PassthroughRenderer) | ||
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if err := pr.RenderPassthrough(ctx.RenderContext().Ctx, w, pctx); err != nil { | ||
return ast.WalkStop, err | ||
} | ||
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return ast.WalkContinue, nil | ||
} | ||
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func (r *htmlRenderer) getPageInner(rctx *render.Context) any { | ||
pid := rctx.PeekPid() | ||
if pid > 0 { | ||
if lookup := rctx.DocumentContext().DocumentLookup; lookup != nil { | ||
if v := rctx.DocumentContext().DocumentLookup(pid); v != nil { | ||
return v | ||
} | ||
} | ||
} | ||
return rctx.DocumentContext().Document | ||
} | ||
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type passthroughContext struct { | ||
page any | ||
pageInner any | ||
typ string // inner or block | ||
inner string | ||
ordinal int | ||
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// This is only used in error situations and is expensive to create, | ||
// so delay creation until needed. | ||
pos htext.Position | ||
posInit sync.Once | ||
createPos func() htext.Position | ||
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*attributes.AttributesHolder | ||
} | ||
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func (p *passthroughContext) Page() any { | ||
return p.page | ||
} | ||
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func (p *passthroughContext) PageInner() any { | ||
return p.pageInner | ||
} | ||
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func (p *passthroughContext) Type() string { | ||
return p.typ | ||
} | ||
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func (p *passthroughContext) Inner() string { | ||
return p.inner | ||
} | ||
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func (p *passthroughContext) Ordinal() int { | ||
return p.ordinal | ||
} | ||
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func (p *passthroughContext) Position() htext.Position { | ||
p.posInit.Do(func() { | ||
p.pos = p.createPos() | ||
}) | ||
return p.pos | ||
} |
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