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package shared
import (
"io"
"golang.org/x/text/transform"
)
// NewXMLSanitizerReader creates an io.Reader that
// wraps another io.Reader and removes illegal xml
// characters from the io stream.
func NewXMLSanitizerReader(xml io.Reader) io.Reader {
isIllegal := func(r rune) bool {
return !(r == 0x09 ||
r == 0x0A ||
r == 0x0D ||
r >= 0x20 && r <= 0xDF77 ||
r >= 0xE000 && r <= 0xFFFD ||
r >= 0x10000 && r <= 0x10FFFF)
}
t := transform.Chain(transform.RemoveFunc(isIllegal))
return transform.NewReader(xml, t)
}
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