//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//--//
public MemoryStream TranslateFrom(MemoryStream aSrc)
{
pFormat = eBinaryFormat.Undefined;
MemoryStream retStream = TranslateFromOneStep(aSrc);
eBinaryFormat lastFormat = pFormat;
while (pFormat != eBinaryFormat.Undefined)
{
lastFormat = pFormat;
retStream = TranslateFromOneStep(retStream);
}
pFormat = lastFormat;
return retStream;
}
public byte[] TranslateFromBase64(string aSrc)
{
string fmt = aSrc.Substring(0,3);
if (fmt.Equals(_B64))
{
pFormat = eBinaryFormat.Base64;
return Convert.FromBase64String(aSrc.Substring(3));
}
else
{
pFormat = eBinaryFormat.Undefined;
return System.Text.Encoding.Default.GetBytes(aSrc);
}
}
public MemoryStream TranslateTo(MemoryStream aSrc, eBinaryFormat aFormat)
{
MemoryStream retStream = aSrc;
pFormat = aFormat;
switch (aFormat)
{
case eBinaryFormat.Text:
retStream = new MemoryStream(System.Text.Encoding.Default.GetBytes(_TXT));
aSrc.WriteTo(retStream);
break;
case eBinaryFormat.Rtf:
retStream = new MemoryStream(System.Text.Encoding.Default.GetBytes(_RTF));
aSrc.WriteTo(retStream);
break;
case eBinaryFormat.Html:
retStream = new MemoryStream(System.Text.Encoding.Default.GetBytes(_HTM));
aSrc.WriteTo(retStream);
break;
case eBinaryFormat.BZip2:
retStream = new MemoryStream(casArchivator.Compress(aSrc));
//retStream = new MemoryStream(4096);
//retStream.Write(System.Text.Encoding.Default.GetBytes(_BZ2), 0, 3);
//MemoryStream destStream = new MemoryStream(4096);
//BZip2.Compress(aSrc, destStream, 4096);
//byte[] bt = destStream.ToArray();
//retStream.Write(bt, 0, bt.Length);
break;
case eBinaryFormat.Base64:
retStream = new MemoryStream(System.Text.Encoding.Default.GetBytes(
_B64 + Convert.ToBase64String(aSrc.ToArray())));
break;
}
return retStream;
}
public CasBinary()
{
pFormat = eBinaryFormat.Undefined;
}
//public byte[] TranslateTo(byte[] aSrc, eFormat aFormat)
//{
// pFormat = aFormat;
// return TranslateTo(aSrc);
//}
public byte[] TranslateTo(byte[] aSrc, eBinaryFormat aFormat)
{
if (aSrc == null || aSrc.Length == 0)
return new Byte[0];
MemoryStream retStream = TranslateTo(new MemoryStream(aSrc), aFormat);
if (retStream != null)
return retStream.ToArray();
else
return new Byte[0];
}
public string TranslateFromText(string aSrc)
{
string fmt = aSrc.Substring(0,3);
if (fmt.Equals(_TXT))
{
pFormat = eBinaryFormat.Text;
return aSrc.Substring(3);
}
else
{
pFormat = eBinaryFormat.Undefined;
return aSrc;
}
}
public string TranslateFromRTF(string aSrc)
{
string fmt = aSrc.Substring(0,3);
if (fmt.Equals(_RTF))
{
pFormat = eBinaryFormat.Rtf;
return aSrc.Substring(3);
}
else
{
pFormat = eBinaryFormat.Undefined;
return aSrc;
}
}
public MemoryStream TranslateFromOneStep(MemoryStream aSrc)
{
MemoryStream retStream = aSrc;
byte[] bt = new Byte[3];
aSrc.Position = 0;
aSrc.Read(bt,0,3);
string fmt = System.Text.Encoding.Default.GetString(bt);
switch (fmt)
{
case _TXT:
pFormat = eBinaryFormat.Text;
retStream = new MemoryStream(aSrc.ToArray(), 3, (int)aSrc.Length-3, false);
break;
case _RTF:
pFormat = eBinaryFormat.Rtf;
retStream = new MemoryStream(aSrc.ToArray(), 3, (int)aSrc.Length-3, false);
break;
case _HTM:
pFormat = eBinaryFormat.Html;
//retStream = new MemoryStream(aSrc.ToArray(), 3, (int)aSrc.Length-3, false);
aSrc.WriteTo(retStream);
break;
case _BZ2:
pFormat = eBinaryFormat.BZip2;
retStream = casArchivatorZip084.Decompress(aSrc);
//aSrc = new MemoryStream(aSrc.ToArray(), 3, (int)aSrc.Length-3, false);
//retStream = new MemoryStream(4096);
//BZip2.Decompress(aSrc, retStream);
break;
case "BZh":
pFormat = eBinaryFormat.BZip2;
aSrc.Position = 0;
retStream = casArchivatorZip084.Decompress(aSrc);
//retStream = new MemoryStream(4096);
//aSrc.Position = 0;
//BZip2.Decompress(aSrc, retStream);
break;
case _B64:
pFormat = eBinaryFormat.Base64;
retStream = new MemoryStream(Convert.FromBase64String(aSrc.ToString().Substring(3)));
break;
default:
pFormat = eBinaryFormat.Undefined;
break;
}
if (pFormat == eBinaryFormat.Undefined)
{
if (bt[0] == 31 && bt[1] == 139)
{
pFormat = eBinaryFormat.GZip;
retStream = casArchivator.Decompress(aSrc);
}
}
return retStream;
}
public string TranslateFromHTML(string aSrc)
{
string fmt = aSrc.Substring(0,3);
if (fmt.Equals(_HTM))
{
pFormat = eBinaryFormat.Html;
return aSrc.Substring(3);
}
else
{
pFormat = eBinaryFormat.Undefined;
return aSrc;
}
}
