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-rw-r--r--modules/markup/markdown/math/inline_renderer.go51
1 files changed, 51 insertions, 0 deletions
diff --git a/modules/markup/markdown/math/inline_renderer.go b/modules/markup/markdown/math/inline_renderer.go
new file mode 100644
index 0000000..9684809
--- /dev/null
+++ b/modules/markup/markdown/math/inline_renderer.go
@@ -0,0 +1,51 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package math
+
+import (
+ "bytes"
+
+ "github.com/yuin/goldmark/ast"
+ "github.com/yuin/goldmark/renderer"
+ "github.com/yuin/goldmark/util"
+)
+
+// InlineRenderer is an inline renderer
+type InlineRenderer struct{}
+
+// NewInlineRenderer returns a new renderer for inline math
+func NewInlineRenderer() renderer.NodeRenderer {
+ return &InlineRenderer{}
+}
+
+func (r *InlineRenderer) renderInline(w util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
+ if entering {
+ extraClass := ""
+ if _, ok := n.(*InlineBlock); ok {
+ extraClass = "display "
+ }
+ _, _ = w.WriteString(`<code class="language-math ` + extraClass + `is-loading">`)
+ for c := n.FirstChild(); c != nil; c = c.NextSibling() {
+ segment := c.(*ast.Text).Segment
+ value := util.EscapeHTML(segment.Value(source))
+ if bytes.HasSuffix(value, []byte("\n")) {
+ _, _ = w.Write(value[:len(value)-1])
+ if c != n.LastChild() {
+ _, _ = w.Write([]byte(" "))
+ }
+ } else {
+ _, _ = w.Write(value)
+ }
+ }
+ return ast.WalkSkipChildren, nil
+ }
+ _, _ = w.WriteString(`</code>`)
+ return ast.WalkContinue, nil
+}
+
+// RegisterFuncs registers the renderer for inline math nodes
+func (r *InlineRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
+ reg.Register(KindInline, r.renderInline)
+ reg.Register(KindInlineBlock, r.renderInline)
+}