public Encoding Match(string html)
{
var match = charsetExpression.Match(html);
var value = match.Groups["charset"].Value;
return(string.IsNullOrEmpty(value)
? null
: EncodingUtil.TryGetEncoding(value));
}
public string Convert(Stream stream, string backupEncoding)
{
var defaultEncoding = Encoding.UTF8;
var bytes = GetBytes(stream);
var html = ConvertToString(bytes, defaultEncoding);
var charsetEncodingInHtml = matcher.Match(html);
if (CharsetIsSpecifiedInHtml(charsetEncodingInHtml))
{
return(EncodingEquals(charsetEncodingInHtml, defaultEncoding)
? html
: ConvertToString(bytes, charsetEncodingInHtml));
}
if (!string.IsNullOrEmpty(backupEncoding))
{
return(EncodingEquals(EncodingUtil.TryGetEncoding(backupEncoding), defaultEncoding)
? html
: ConvertToString(bytes, Encoding.GetEncoding(backupEncoding)));
}
return(html);
}