On Fri, 2002-02-01 at 14:02, toni baker wrote:
> I would like to prevent users from uploading a file
> that contains more than 4 pipes or less than 2 pipes.
> The code below prevents users from uploading a file
> containing more than 4 pipes, but not less than 2
> pipes. Should I use awk, ereg, or sed? Thanks
Unless you *have* to spawn processes to do this for you
for some reason, you can keep things a lot simpler by
doing it in PHP, something like this:
<?php
error_reporting(E_ALL);
function check_file($filename) {
if (!$upload_file = file($filename)) {
return false;
}
while (list(, $line) = each($upload_file)) {
$num_pipes = substr_count($line, '|');
if ($num_pipes < 2 || $num_pipes > 4) {
return false;
}
}
return true;
}
$userfile = 'testpipes.txt';
if (check_file($userfile)) {
echo "File passed.\n";
} else {
echo "File failed.\n";
}
?>
Hope this helps,
Torben
> system ("/bin/cat $userfile|/bin/sed -n
> 's/.*|.*|.*|.*|.*|/&/p'> pipes.txt;
> $fd =fopen("pipes.txt", 'r');
> $pipes5=fgets($fd,50);
> echo ($pipes5);
> fclose($fd);
>
> if ($pipes5) {
> print "wrong number of pipes";
> }
>
> The uploaded file below should not pass but it does:
>
> aaaaa|bbbbb|ccccc|ddddd|eeeee
> aaaaa|bbbbb|ccccc|
> aaaaa|bbbbb|ccccc|ddddd
> aaaaa|bbbbb
> aaaaa|bbbbb|ccccc|ddddd|eeeee
--
Torben Wilson <[EMAIL PROTECTED]>
http://www.thebuttlesschaps.com
http://www.hybrid17.com
http://www.inflatableeye.com
+1.604.709.0506
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