1 package blackfriday

     2 

     3 import (

     4 	"html"

     5 	"io"

     6 )

     7 

     8 var htmlEscaper = [256][]byte{

     9 	'&': []byte("&"),

    10 	'<': []byte("&lt;"),

    11 	'>': []byte(">"),

    12 	'"': []byte("""),

    13 }

    14 

    15 func escapeHTML(w io.Writer, s []byte) {

    16 	var start, end int

    17 	for end < len(s) {

    18 		escSeq := htmlEscaper[s[end]]

    19 		if escSeq != nil {

    20 			w.Write(s[start:end])

    21 			w.Write(escSeq)

    22 			start = end + 1

    23 		}

    24 		end++

    25 	}

    26 	if start < len(s) && end <= len(s) {

    27 		w.Write(s[start:end])

    28 	}

    29 }

    30 

    31 func escLink(w io.Writer, text []byte) {

    32 	unesc := html.UnescapeString(string(text))

    33 	escapeHTML(w, []byte(unesc))

    34 }