Hi everyone,

Few days back a message was posted about modifying a line in an ASCII file. Well I’m trying to do the same, but I’m getting my parameters through a get method from a web browser which calls myscript.pl, one of the subroutines in the script deals with changing the held quantity based on what the user typed:

#!/usr/bin/perl -wT 
use CGI qw(:standard);

$ItemForm   = param('item');
$AmountForm = param('amount');
    
$OldLine = `grep $ItemForm stock.dat`;
    ($item, $OldHeld, $order)=split(/” “/, $OldLine);

    $NewHeld = $OldHeld-$AmountForm;
    $NewLine= join (" ",$item, $NewHeld, $order);
    open(STOCK,"items.dat");
    @items=<STOCK>;
    close STOCK;
    for ($i=0; $i < $#items; $i++) {
        $items[ $i ] = $NewLine if ($items[ $i ] eq $OldLine);
    }

    open (STOCK,">items.dat");
    foreach (@items) {
        print STOCK;
    }
    close(STOCK);

[download]


It's working fine but my question: is there any better way doing it? I believe it’s not practical to read the file in an array and then rewrite it back.
The other point is I don’t have the Tie::File module and chances are very low that I would be allowed to install it on the server.

Cheers,
Tom

In reply to Read/Write ASCII file by Anonymous Monk

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