refactor: urfave v3

vendor/github.com/russross/blackfriday/v2/esc.go

@@ -1,70 +0,0 @@
-package blackfriday
-
-import (
-	"html"
-	"io"
-)
-
-var htmlEscaper = [256][]byte{
-	'&': []byte("&"),
-	'<': []byte("&lt;"),
-	'>': []byte("&gt;"),
-	'"': []byte("&quot;"),
-}
-
-func escapeHTML(w io.Writer, s []byte) {
-	escapeEntities(w, s, false)
-}
-
-func escapeAllHTML(w io.Writer, s []byte) {
-	escapeEntities(w, s, true)
-}
-
-func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) {
-	var start, end int
-	for end < len(s) {
-		escSeq := htmlEscaper[s[end]]
-		if escSeq != nil {
-			isEntity, entityEnd := nodeIsEntity(s, end)
-			if isEntity && !escapeValidEntities {
-				w.Write(s[start : entityEnd+1])
-				start = entityEnd + 1
-			} else {
-				w.Write(s[start:end])
-				w.Write(escSeq)
-				start = end + 1
-			}
-		}
-		end++
-	}
-	if start < len(s) && end <= len(s) {
-		w.Write(s[start:end])
-	}
-}
-
-func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) {
-	isEntity = false
-	endEntityPos = end + 1
-
-	if s[end] == '&' {
-		for endEntityPos < len(s) {
-			if s[endEntityPos] == ';' {
-				if entities[string(s[end:endEntityPos+1])] {
-					isEntity = true
-					break
-				}
-			}
-			if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' {
-				break
-			}
-			endEntityPos++
-		}
-	}
-
-	return isEntity, endEntityPos
-}
-
-func escLink(w io.Writer, text []byte) {
-	unesc := html.UnescapeString(string(text))
-	escapeHTML(w, []byte(unesc))
-}