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Use multi reader instead to concat strings #22099

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merged 3 commits into from Dec 12, 2022
Merged

Use multi reader instead to concat strings #22099

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a6161e0
Use multi reader instead to concat strings
lunny Dec 11, 2022
632679b
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lunny Dec 12, 2022
e9a02ba
Merge branch 'main' into lunny/use_multi_reader
lunny Dec 12, 2022
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19 changes: 8 additions & 11 deletions modules/markup/html.go
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Expand Up @@ -305,18 +305,15 @@ func postProcess(ctx *RenderContext, procs []processor, input io.Reader, output
return err
}

res := bytes.NewBuffer(make([]byte, 0, len(rawHTML)+50))
// prepend "<html><body>"
_, _ = res.WriteString("<html><body>")

// Strip out nuls - they're always invalid
_, _ = res.Write(tagCleaner.ReplaceAll([]byte(nulCleaner.Replace(string(rawHTML))), []byte("&lt;$1")))

// close the tags
_, _ = res.WriteString("</body></html>")

// parse the HTML
node, err := html.Parse(res)
node, err := html.Parse(io.MultiReader(
// prepend "<html><body>"
strings.NewReader("<html><body>"),
// Strip out nuls - they're always invalid
bytes.NewReader(tagCleaner.ReplaceAll([]byte(nulCleaner.Replace(string(rawHTML))), []byte("&lt;$1"))),
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// close the tags
strings.NewReader("</body></html>"),
))
if err != nil {
return &postProcessError{"invalid HTML", err}
}
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