hmn/src/parsing/bbcode.go

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package parsing
import (
"strings"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/ast"
gast "github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/text"
"github.com/yuin/goldmark/util"
)
const BBCodePriority = 1 // TODO: Pick something more reasonable?
type bParser struct{}
var _ parser.InlineParser = bParser{}
func (s bParser) Trigger() []byte {
return []byte{'['}
}
func (s bParser) Parse(parent gast.Node, block text.Reader, pc parser.Context) gast.Node {
// _, segment := block.PeekLine()
// start := segment.Start
// block.Advance(3)
// n := ast.NewTextSegment(text.NewSegment(start, start+4))
// bold := ast.NewText()
// bold.Segment
// link := ast.NewAutoLink(typ, n)
// link.Protocol = protocol
// return link
2021-06-16 06:29:16 +00:00
lineBytes, _ := block.PeekLine()
line := string(lineBytes)
if !strings.HasPrefix(line, "[b]") {
return nil
}
start := 0
closingIndex := strings.Index(line, "[/b]")
if closingIndex < 0 {
return nil
}
end := closingIndex + 4
n := ast.NewEmphasis(2)
n.AppendChild(n, ast.NewString([]byte("wow bold text")))
block.Advance(end - start)
return n
}
type bTag struct{}
func (e bTag) Extend(m goldmark.Markdown) {
m.Parser().AddOptions(parser.WithInlineParsers(
util.Prioritized(bParser{}, BBCodePriority),
))
// m.Renderer().AddOptions(renderer.WithNodeRenderers(
// util.Prioritized(NewStrikethroughHTMLRenderer(), 500),
// ))
}