// Token: 0x060002FE RID: 766 RVA: 0x0001097F File Offset: 0x0000EB7F
internal static string CorrectValue(string value)
{
if (-1 == value.IndexOfAny(MimeParameter.ControlCharacters))
{
return(value);
}
return(MimeParameter.CorrectValue(value.ToCharArray()));
}
// Token: 0x06000300 RID: 768 RVA: 0x000109E4 File Offset: 0x0000EBE4
internal bool FallBackIfRequired(byte[] bytes, DecodingOptions decodingOptions, out string value)
{
if ((DecodingFlags.FallbackToRaw & decodingOptions.DecodingFlags) != DecodingFlags.None)
{
if (bytes == null)
{
value = string.Empty;
}
else
{
value = ByteString.BytesToString(bytes, decodingOptions.AllowUTF8);
if ((DecodingFlags.AllowControlCharacters & decodingOptions.DecodingFlags) == DecodingFlags.None)
{
value = MimeParameter.CorrectValue(value);
}
}
return(true);
}
value = null;
return(false);
}
// Token: 0x0600030B RID: 779 RVA: 0x000112A8 File Offset: 0x0000F4A8
private bool TryDecodeRfc2231(ref DecodingOptions decodingOptions, out DecodingResults decodingResults, out string value)
{
decodingResults = default(DecodingResults);
decodingResults.EncodingScheme = EncodingScheme.Rfc2231;
Charset charset = null;
byte[] sz = this.valueFragments.GetSz(4026531839U);
int num = 0;
if (this.valueEncoded)
{
int num2 = (sz == null) ? -1 : ByteString.IndexOf(sz, 39, 0, sz.Length);
if (-1 < num2 && num2 < sz.Length - 1)
{
int num3 = ByteString.IndexOf(sz, 39, ++num2, sz.Length - num2);
if (-1 < num3)
{
decodingResults.CharsetName = ByteString.BytesToString(sz, 0, num2 - 1, false);
decodingResults.CultureName = ByteString.BytesToString(sz, num2, num3 - num2, false);
if (!Charset.TryGetCharset(decodingResults.CharsetName, out charset))
{
decodingResults.DecodingFailed = true;
return(this.FallBackIfRequired(sz, decodingOptions, out value));
}
num = num3 + 1;
}
}
}
if (charset == null)
{
charset = decodingOptions.Charset;
if (charset == null)
{
charset = DecodingOptions.DefaultCharset;
}
}
decodingResults.CharsetName = charset.Name;
Encoding encoding;
if (!charset.TryGetEncoding(out encoding))
{
decodingResults.DecodingFailed = true;
return(this.FallBackIfRequired(sz, decodingOptions, out value));
}
int num4 = this.valueFragments.Length - num;
for (MimeNode mimeNode = base.FirstChild; mimeNode != null; mimeNode = mimeNode.NextSibling)
{
MimeParameter mimeParameter = mimeNode as MimeParameter;
if (mimeParameter != null)
{
num4 += mimeParameter.RawLength;
}
}
byte[] array = new byte[num4];
int num5 = 0;
if (sz != null && num < sz.Length)
{
num5 += this.DecodeRfc2231Octets(this.valueEncoded, sz, num, array, 0);
}
for (MimeNode mimeNode = base.FirstChild; mimeNode != null; mimeNode = mimeNode.NextSibling)
{
MimeParameter mimeParameter2 = mimeNode as MimeParameter;
if (mimeParameter2 != null)
{
byte[] rawValue = mimeParameter2.RawValue;
if (rawValue != null)
{
num5 += this.DecodeRfc2231Octets(mimeParameter2.valueEncoded, mimeParameter2.RawValue, 0, array, num5);
}
}
}
value = ((num5 != 0) ? encoding.GetString(array, 0, num5) : string.Empty);
if ((DecodingFlags.AllowControlCharacters & decodingOptions.DecodingFlags) == DecodingFlags.None)
{
value = MimeParameter.CorrectValue(value);
}
return(true);
}