NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part2/13140

Text File | 1996-08-05 | 1.8 KB | 52 lines

Path: sun001.spd.dsccc.com!jmccarty
From: [e-mail] (Mike McCarty)
Newsgroups: comp.lang.c
Subject: Re: Opening STDOUT As BINARY
Date: 4 Apr 1996 22:16:46 GMT
Organization: DSC Communications Corporation
Message-ID: <4k1hoe$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: sun1307.spd.dsccc.com

In article <[e-mail]>,
Stephane Charette  <[e-mail]> wrote:
)I've come across a problem, and I believe that it is
)caused by limitations in C/C++.  Can anyone help on the
)following:
)
)I need to output binary information to the console, which
)is then redirected to a file by the o/s.  At the moment,
)I'm using printf( "%c", mychar ) to output the the binary
)data one character at a time as it comes in.
)
)However, it seems that the character #7 (0x07, bell) gets
)sent to stdout followed by an automatic CR (0x0A).  Every
)other character in the ASCII table works fine!  Is there
)a way to reopen stdout in binary mode instead of as a text
)stream? The extra 0x0A characters are corrupting the data!
)
)I've also tried "cout" and "putc", but they yield the same
)result.
)
)Why do I need this:  this application runs as a CGI-BIN,
)and the web server EXPECTS the output to be sent to
)stdout.  I cannot fwrite() this information to a physical
)file since the web server is capturing the console output!
)
)Thanks for any help,
)
)Stephane Charette.


The behavior you describe has -nothing- to do with C. It has to do with
the peculiarities of the operating system you are using. Is htis DOS? If
so, then investigate putting stdout in binary mode. Your compiler should
have a way to do this. Look into variables such as _fmode, __mode etc.

Mike
--
----
char *p="char *p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}

I don't speak for DSC.         <- They make me say that.