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461803619b
Simplify and optimize escapeHTML as per @Ambrevar's suggestion: lean on the fact that we're dealing with bytes: declare a 256-element array with most of it filled with zeros, except for the few slots that need escaping. This avoids some conditionals in a tight loop. Also, uncomment it's benchmark.
35 lines
569 B
Go
35 lines
569 B
Go
package blackfriday
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import (
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"html"
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"io"
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)
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var htmlEscaper = [256][]byte{
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'&': []byte("&"),
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'<': []byte("<"),
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'>': []byte(">"),
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'"': []byte("""),
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}
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func escapeHTML(w io.Writer, s []byte) {
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var start, end int
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for end < len(s) {
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escSeq := htmlEscaper[s[end]]
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if escSeq != nil {
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w.Write(s[start:end])
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w.Write(escSeq)
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start = end + 1
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}
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end++
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}
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if start < len(s) && end <= len(s) {
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w.Write(s[start:end])
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}
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}
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func escLink(w io.Writer, text []byte) {
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unesc := html.UnescapeString(string(text))
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escapeHTML(w, []byte(unesc))
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}
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