| public static QDecode ( System encoding, string data ) : string | ||
| encoding | System | Input string encoding. |
| data | string | String which to encode. |
| return | string | |
/// <summary>
/// Canonical decoding. Decodes all canonical encoding occurences in specified text.
/// Usually mime message header unicode/8bit values are encoded as Canonical.
/// Format: =?charSet?type[Q or B]?encoded string?= .
/// </summary>
/// <param name="text">Text to decode.</param>
/// <returns>Returns decoded text.</returns>
public static string CanonicalDecode(string text)
{
// =?charSet?type[Q or B]?encoded string?=
Regex regex = new Regex(@"\=\?(?<charSet>[\w\-]*)\?(?<type>[qQbB])\?(?<text>[\w\W]*)\?\=");
MatchCollection m = regex.Matches(text);
foreach (Match match in m)
{
try{
System.Text.Encoding enc = System.Text.Encoding.GetEncoding(match.Groups["charSet"].Value);
// QDecode
if (match.Groups["type"].Value.ToLower() == "q")
{
text = text.Replace(match.Value, Core.QDecode(enc, match.Groups["text"].Value));
}
// Base64
else
{
text = text.Replace(match.Value, enc.GetString(Convert.FromBase64String(match.Groups["text"].Value)));
}
}
catch {
// If parsing fails, just leave this string as is
}
}
return(text);
}
