Convert String to Regex

Is there some easy way in Perl to convert a string to a regex? For instance if I have the string file.txt and I want to generate a regex from that which only matches file.txt and not file!txt, is there some easy way?

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Migrateduser

See http://www.perldoc.com/perl5.8.4/pod/perlfaq6.html#How-can-I-quote-a-variable-to-use-in-a-regex-

Brinko Kobrin
Interwoven Staff Engineer

Migrateduser

Awesome, thanks.

megamala

$str = qq(testing$testing);
If print $str the result is only testing not "testing$testing". How can print that one.

TIA
MM Guptha

Migrateduser

If you want the value of $str to be "testing" followed by the value of the variable $testing, then you can use

$str = "testing$testing";

If you want the value of $str to be "testing" followed by the question mark ("?") followed by "testing", then you can use

$str = 'testing$testing';

Brinko Kobrin
Interwoven Staff Engineer

Migrateduser

If you want the value of $str to be "testing" followed by the question mark ("?") followed by "testing", then you can use

$str = 'testing$testing';

Huh? That doesn't make any sense - how does a "$" equal a "?"?

Dave Smith
Sr. Software Engineer
Nike, Inc.
(503) 671-4238
DavidH.Smith@nike.com

Migrateduser

It only make sense before I've had my morning coffee. Now that I've had a cup, it is obvious that I should have written:

If you want the value of $str to be "testing" followed by the dollar sign ("$") followed by "testing", then you can use

$str = 'testing$testing';

Brinko Kobrin
Interwoven Staff Engineer

megamala

Thanks,
if $str = cgi->param('testing'); then how can I print the value with '$'.

TIA
MM Guptha

Migrateduser

You can print the value using:

print $str;

But perhaps you question is, "How can I safely print a string into an HTML response when that string may contain a question mark?" In that case, you could use something like this:

use TeamSite::CGI_lite;
print TeamSite::CGI_lite->escape_html_data($str);

Brinko Kobrin
Interwoven Staff Engineer

megamala

Thanks, I am looking same but I want use in production server where Teamsite not installed. Is there any other perl module do same.

TIA
MM Guptha

Adam Stoller

If you're not interacting with TeamSite - look at CGI.pm (perldoc CGI).
If you're interacting with TeamSite - especially workflow related - then you're generally better off using TeamSite::CGI_lite

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com