hybrid text/binary mount

schilling@fokus.gmd.de schilling@fokus.gmd.de
Tue May 2 03:01:00 GMT 2000


>From: Chris Faylor <cgf@cygnus.com>
>On Mon, Apr 24, 2000 at 02:31:19PM -0400, DJ Delorie wrote:
>>Hey, I've got an idea.  How about a mount mode where files opened for
>>reading do CR/LF conversion *if* they look like text files (i.e. no
>>binary characters, all CR/LF are part of CR/LF pair), and files open
>>for writing always write files in binary mode.

>That's amazing.  I have been thinking about the same thing for several
>days.  I have started to type this in several time but always hit a wall
>when I realized that given the nature of this mailing list, either no one
>would respond or somewone will respond with a twenty page treatise on the
>way they think it should be done with no hint of an effort to volunteer to
>do the actual work.

>I was thinking that if a file had any characters whose ASCII code was
>< ' ' or >= DEL before the first \n, then the file would be considered
>binary.  Otherwise, the file would be text.  You could apply this heuristic
>to both input and output.

This may have been true 15 years ago.....

A file is binary, if it contains non-printable characters. 

As we may have e.g umlauts in 8 bit things have changed.

Jörg

 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
       js@cs.tu-berlin.de		(uni)  If you don't have iso-8859-1
       schilling@fokus.gmd.de		(work) chars I am J"org Schilling
 URL:  http://www.fokus.gmd.de/usr/schilling   ftp://ftp.fokus.gmd.de/pub/unix


More information about the Cygwin-developers mailing list