auto_link.go

Documentation: github.com/yuin/goldmark/parser

     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  }
    43
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