yEnc decoder

[Marvin Grill]

Hi, I'm working on a type of NewsHound program and am stuck on how to
decode the yEnc encoded articles (body).

I tried using Joe Feser's yEnc class but can't seem to get it to work
properly
Not sure whether it's an Encoding.Type problem or not getting the
stream start position right.

In any case here's part of the code with the problem:

__________________________________________________ _______________
Article = 21971499;
nntp1.Send("BODY " + Article.ToString() + "\r\n");
// this line reads stream till line with period only
s = nntp1.Receive(".\r\n");
Stream inMemStream, outMemStream;
inMemStream= new MemoryStream(Encoding.UTF8.GetBytes(s));
outMemStream= new MemoryStream();
inMemStream.Seek(0, 0);
yenc.DecodeFromRawStream(inMemStream, outMemStream);
outMemStream.Seek(0, 0);

StreamReader sr = new StreamReader(outMemStream, Encoding.UTF8);
string ArticleAttachment = sr.ReadToEnd();
__________________________________________________ ____________________

The problem is that the decoded string has only the upper case letters
right but the lower case letters are spaces.
If any one knows of any other components out there that can decode
yEnc please let me know.

Thanks
Marv

[Daniel O'Connell]

If my memory serves right, this code should work(I wrote it a long time ago
and I don't know for sure if it was 100% working, I know it was working with
the test files):
byte[] yEncDecodeBlock(byte[] Block)
{
byte x;
byte[] O = new byte[Block.Length];
byte[] Out;
int count = 0;
for (int i=0;i < Block.Length; i++)
{
x = Block[i];
if (x=='\r')
{

i++;
if (Block[i] == '\n')
{
continue;
}
else
{
throw new yEncInvalidFormatException("There was a carriage return
without a linefeed detected");
}
}
else if (x=='=')
{
i++;
byte r = x;
x = Block[i];
O[count] = (byte)(x-64-42);
}
else
{
O[count] = (byte)(x-42);
}
count++;
}
if (count != 0)
{
Out = new byte[count];
Buffer.BlockCopy(O,0,Out,0,count);
return Out;
}
return null;
}
"Marvin Grill" <ma*********@hotmail.com> wrote in message
news:f0**************************@posting.google.c om...

Hi, I'm working on a type of NewsHound program and am stuck on how to
decode the yEnc encoded articles (body).

I tried using Joe Feser's yEnc class but can't seem to get it to work
properly
Not sure whether it's an Encoding.Type problem or not getting the
stream start position right.

In any case here's part of the code with the problem:

__________________________________________________ _______________
Article = 21971499;
nntp1.Send("BODY " + Article.ToString() + "\r\n");
// this line reads stream till line with period only
s = nntp1.Receive(".\r\n");
Stream inMemStream, outMemStream;
inMemStream= new MemoryStream(Encoding.UTF8.GetBytes(s));
outMemStream= new MemoryStream();
inMemStream.Seek(0, 0);
yenc.DecodeFromRawStream(inMemStream, outMemStream);
outMemStream.Seek(0, 0);

StreamReader sr = new StreamReader(outMemStream, Encoding.UTF8);
string ArticleAttachment = sr.ReadToEnd();
__________________________________________________ ____________________

The problem is that the decoded string has only the upper case letters
right but the lower case letters are spaces.
If any one knows of any other components out there that can decode
yEnc please let me know.

Thanks
Marv

[Marvin Grill]

Daniel thanks very much for your reply. You are the first person to
add anything intelligent to this thread so far. You are a gentleman.
I'll give it a try and post a reply for others to benefit.

Marv

"Daniel O'Connell" <[e-mail]> wrote in message news:<OA*************@TK2MSFTNGP11.phx.gbl>...

If my memory serves right, this code should work(I wrote it a long time ago
and I don't know for sure if it was 100% working, I know it was working with
the test files):
byte[] yEncDecodeBlock(byte[] Block)
{
byte x;
byte[] O = new byte[Block.Length];
byte[] Out;
int count = 0;
for (int i=0;i < Block.Length; i++)
{
x = Block[i];
if (x=='\r')
{

i++;
if (Block[i] == '\n')
{
continue;
}
else
{
throw new yEncInvalidFormatException("There was a carriage return
without a linefeed detected");
}
}
else if (x=='=')
{
i++;
byte r = x;
x = Block[i];
O[count] = (byte)(x-64-42);
}
else
{
O[count] = (byte)(x-42);
}
count++;
}
if (count != 0)
{
Out = new byte[count];
Buffer.BlockCopy(O,0,Out,0,count);
return Out;
}
return null;
}
"Marvin Grill" <ma*********@hotmail.com> wrote in message
news:f0**************************@posting.google.c om...

Hi, I'm working on a type of NewsHound program and am stuck on how to
decode the yEnc encoded articles (body).

I tried using Joe Feser's yEnc class but can't seem to get it to work
properly
Not sure whether it's an Encoding.Type problem or not getting the
stream start position right.

In any case here's part of the code with the problem:

__________________________________________________ _______________
Article = 21971499;
nntp1.Send("BODY " + Article.ToString() + "\r\n");
// this line reads stream till line with period only
s = nntp1.Receive(".\r\n");
Stream inMemStream, outMemStream;
inMemStream= new MemoryStream(Encoding.UTF8.GetBytes(s));
outMemStream= new MemoryStream();
inMemStream.Seek(0, 0);
yenc.DecodeFromRawStream(inMemStream, outMemStream);
outMemStream.Seek(0, 0);

StreamReader sr = new StreamReader(outMemStream, Encoding.UTF8);
string ArticleAttachment = sr.ReadToEnd();
__________________________________________________ ____________________

The problem is that the decoded string has only the upper case letters
right but the lower case letters are spaces.
If any one knows of any other components out there that can decode
yEnc please let me know.

Thanks
Marv

[Daniel O'Connell]

Heh, np, hopefully it still works.
However, you should probably avoid posting so broadly, the general group
would probably have sufficed.
Also, you may want to obfusticate your email addy, there are a few nasty
scanners that will spam you with virii, etc using email addresses hulled
from these groups.
"Marvin Grill" <ma*********@hotmail.com> wrote in message
news:f0**************************@posting.google.c om...

Daniel thanks very much for your reply. You are the first person to
add anything intelligent to this thread so far. You are a gentleman.
I'll give it a try and post a reply for others to benefit.

Marv

"Daniel O'Connell" <[e-mail]> wrote in message

news:<OA*************@TK2MSFTNGP11.phx.gbl>...

If my memory serves right, this code should work(I wrote it a long time ago and I don't know for sure if it was 100% working, I know it was working with the test files):
byte[] yEncDecodeBlock(byte[] Block)
{
byte x;
byte[] O = new byte[Block.Length];
byte[] Out;
int count = 0;
for (int i=0;i < Block.Length; i++)
{
x = Block[i];
if (x=='\r')
{

i++;
if (Block[i] == '\n')
{
continue;
}
else
{
throw new yEncInvalidFormatException("There was a carriage return
without a linefeed detected");
}
}
else if (x=='=')
{
i++;
byte r = x;
x = Block[i];
O[count] = (byte)(x-64-42);
}
else
{
O[count] = (byte)(x-42);
}
count++;
}
if (count != 0)
{
Out = new byte[count];
Buffer.BlockCopy(O,0,Out,0,count);
return Out;
}
return null;
}
"Marvin Grill" <ma*********@hotmail.com> wrote in message
news:f0**************************@posting.google.c om...

Hi, I'm working on a type of NewsHound program and am stuck on how to
decode the yEnc encoded articles (body).

I tried using Joe Feser's yEnc class but can't seem to get it to work
properly
Not sure whether it's an Encoding.Type problem or not getting the
stream start position right.

In any case here's part of the code with the problem:

__________________________________________________ _______________
Article = 21971499;
nntp1.Send("BODY " + Article.ToString() + "\r\n");
// this line reads stream till line with period only
s = nntp1.Receive(".\r\n");
Stream inMemStream, outMemStream;
inMemStream= new MemoryStream(Encoding.UTF8.GetBytes(s));
outMemStream= new MemoryStream();
inMemStream.Seek(0, 0);
yenc.DecodeFromRawStream(inMemStream, outMemStream);
outMemStream.Seek(0, 0);

StreamReader sr = new StreamReader(outMemStream, Encoding.UTF8);
string ArticleAttachment = sr.ReadToEnd();
__________________________________________________ ____________________

The problem is that the decoded string has only the upper case letters
right but the lower case letters are spaces.
If any one knows of any other components out there that can decode
yEnc please let me know.

Thanks
Marv