PERL CGI Beginners - Not reading the whole file

Author

Not reading the whole file

Richard Heintze

2004-05-22, 11:32 am

This code is not reading the entire file. It is my
intent that it read the entire file. Can somone help
me remedy this problem?

Thanks,
Siegfried

open (INFILE, "data.txt");
my $backgr_data=<INFILE>;

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Andrew Gaffney

2004-05-22, 11:32 am

Richard Heintze wrote:
> This code is not reading the entire file. It is my
> intent that it read the entire file. Can somone help
> me remedy this problem?
>
> Thanks,
> Siegfried
>
> open (INFILE, "data.txt");
> my $backgr_data=<INFILE>;

First, please don't reply to an unrelated post to start a new thread. This throws off
things for people who have threading support in their mailreaders.

Second, the <> operator is the same as calling 'readline'. It only reads one line of the
file. Try:

open INFILE, "< data.txt";
my $backgr_data;
while(<INFILE> ) {
$backgr_data .= $_;
}

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Paul Archer

2004-05-22, 11:32 am

3:01pm, Richard Heintze wrote:

> This code is not reading the entire file. It is my
> intent that it read the entire file. Can somone help
> me remedy this problem?
>
> Thanks,
> Siegfried
>
> open (INFILE, "data.txt");

Are you sure your file opened properly? Did you check?
open (INFILE, "data.txt") or die "Couldn't open file: $!";

> my $backgr_data=<INFILE>;
>
Reading from a filehandle in scalar context reads one line at a time. Sounds
like you want to slurp the whole file in at once, so you want
my @backgr_data=<INFILE>;

Paul

Richard Heintze

2004-05-22, 11:32 am

I think I solved my own problem.

I'm using a

my @backgr_data=<INFILE>;

to read everything. Is the above less efficient than
below?

read INFILE, $backgr_data, $some_really_big_number;

Thanks,
Siegfried

>This code is not reading the entire file. It is my
>intent that it read the entire file. Can somone help
>me remedy this problem?

> Thanks,
> Siegfried
>
> open (INFILE, "data.txt");
> my $backgr_data=<INFILE>;

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Jan Eden

2004-05-22, 11:32 am

Richard Heintze wrote on 04.05.2004:

>I think I solved my own problem.
>
>I'm using a=20
>
>my @backgr_data=3D<INFILE>;
>
Or use

my $backgr_data =3D join '', <INFILE>;

- Jan
--=20
There are two major products that come out of Berkeley: LSD and UNIX. We do=
n't believe this to be a coincidence. - Jeremy S. Anderson

Christopher G Tantalo

2004-05-22, 11:32 am

Jan Eden wrote:

>Richard Heintze wrote on 04.05.2004:
>
>
>
>Or use
>
>my $backgr_data = join '', <INFILE>;
>
>- Jan
>
>
The dbi module would be the best solution, as the quote method supports
any number of quotes in the string itself.

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Christopher G Tantalo

2004-05-22, 11:32 am

Christopher G Tantalo wrote:

> Jan Eden wrote:
>
> The dbi module would be the best solution, as the quote method
> supports any number of quotes in the string itself.
>
wrong thread.. i am sorry.

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