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Subject: RE: Bug In Mount? (Bug in read()?)
Date: Tue, 30 Jan 2001 13:16:11 -0800
Message-ID: <67677D360C1FD411BB4000B0D02080418031DE@eqexchange.equildom.equilibrium.com>
Thread-Topic: Bug In Mount? (Bug in read()?)
Thread-Index: AcCKXtbmzpl66YdhRAOBZCm56DvM+gAoPsmg
From: "Josh Schulte" <jschulte AT equilibrium DOT com>
To: <earnie_boyd AT yahoo DOT com>, <cygwin AT cygwin DOT com>
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I don't think I have got all the details across. I don't see how it can
not be bug.

I take a computer. I remove the cygwin directory. I remove the cygwin
registry entries. I install cygwin with a particular mount type
(textmode or binmode). I run my test. I get the same results on both
tests. I have done this on two seperate computers. Both computers give
me the same results. In the mode that the \r is supposed to be stripped,
it is not. 

The only way that this would not be a bug is if there is some extranious
variable I have not accounted for that is changing the behaviour of
cygwin or perl on my system. As far as I can tell, I have removed all
extranious variables, I removed all traces of cygwin. 

Josh

-----Original Message-----
From: Earnie Boyd [mailto:earnie_boyd AT yahoo DOT com]
Sent: Monday, January 29, 2001 5:46 PM
To: Josh Schulte
Cc: Earnie Boyd
Subject: Re: Bug In Mount? (Bug in read()?)


Josh Schulte wrote:

> Correct me if I am wrong. \r\n are at the end of every line in a dos
> text file. mounting stuff in binmode causes calls to the system call
> read() to return the line as if there was only a \n at the end.
mounting
> stuff in textmode causes calls to the system call read() to return the
> line as if there was only a \n at the end.

If a file has DOS (\r\n) line endings and the fd is in binary mode the
data
will end with \r when read.  If the fd is in text mode the data will not
end with \r, the \r will have been removed and the count of characters
read
will be decremented by one.

>
> I am getting \r\n regardless of what mode I have the directories
mounted
> as when I read from perl, as demonstrated by the script below. I have
> recreated the problem on two computers now. Can anyone else recreate
> this problem? Is it a bug in cygwin?

It's not a bug in Cygwin.  I've already posted that I tried your example
with the expected results.  I suggest that the contents of your file
contains DOS style line endings and the fd for the read is in binary
mode.

>
> There is only one perl on my system. (Earnie: The /usr/local/bin/perl
is
> a link I create for backward compatability in some of my other
scripts.)
> I did a search of the entire system just to double check. So that is
not
> the problem.

Ok, this shouldn't be a problem then.


>
> Thanks for any help,
> Josh

Earnie.

>
> > PERL SCRIPT
> > -----------
> >
> > #!/usr/local/bin/perl
> >
> > @what = split(/\n/, `cat contents`);
> >
> > foreach $line (@what)
> > {
> >         print "***>$line<-\n";
> > }
> >
> > CONTENTS OF FILE
> > ----------------
> >
> > line one
> > line two
> > line three
> >
> MY RESULTS:
> -----------
> <-*>line one
> <-*>line two
> <-*>line three
>
> -----Original Message-----
> From: Earnie Boyd [mailto:earnie_boyd AT yahoo DOT com]
> Sent: Thursday, January 25, 2001 2:13 PM
> To: Josh Schulte
> Cc: cygwin AT cygwin DOT com
> Subject: Re: Bug In Mount?, Was [Odd/New Perl Behavior]
>
> Could be that you have \r\n in your contents file.  Could be that
you've
> more than one version of perl installed.  Note, the current perl is
> located at /usr/bin/perl not /usr/local/bin/perl.
>
> Cheers,
> Earnie.
>
> --
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