gtsocial-umbx

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auto_link.go (979B)

      1 package parser
      2 
      3 import (
      4 	"github.com/yuin/goldmark/ast"
      5 	"github.com/yuin/goldmark/text"
      6 	"github.com/yuin/goldmark/util"
      7 )
      8 
      9 type autoLinkParser struct {
     10 }
     11 
     12 var defaultAutoLinkParser = &autoLinkParser{}
     13 
     14 // NewAutoLinkParser returns a new InlineParser that parses autolinks
     15 // surrounded by '<' and '>' .
     16 func NewAutoLinkParser() InlineParser {
     17 	return defaultAutoLinkParser
     18 }
     19 
     20 func (s *autoLinkParser) Trigger() []byte {
     21 	return []byte{'<'}
     22 }
     23 
     24 func (s *autoLinkParser) Parse(parent ast.Node, block text.Reader, pc Context) ast.Node {
     25 	line, segment := block.PeekLine()
     26 	stop := util.FindEmailIndex(line[1:])
     27 	typ := ast.AutoLinkType(ast.AutoLinkEmail)
     28 	if stop < 0 {
     29 		stop = util.FindURLIndex(line[1:])
     30 		typ = ast.AutoLinkURL
     31 	}
     32 	if stop < 0 {
     33 		return nil
     34 	}
     35 	stop++
     36 	if stop >= len(line) || line[stop] != '>' {
     37 		return nil
     38 	}
     39 	value := ast.NewTextSegment(text.NewSegment(segment.Start+1, segment.Start+stop))
     40 	block.Advance(stop + 1)
     41 	return ast.NewAutoLink(typ, value)
     42 }