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Home: Perl Programming Help: Regular Expressions:
Reg ex for English (United States)

 


hydpm
User

Jun 11, 2008, 2:20 PM

Post #1 of 5 (8393 views)
Reg ex for English (United States) Can't Post
   

Hi,

$Language = English (United States) [It may be English (United Kingdom) some times]

English (United States) is present in my data input , but the below condition not working.

if ($_ =~ /$Language/ ) {

}



When i replace manually AS below it works

if($_ =~ / English \(United States \) /) {

}



I need a generalized reg ex to work for these if i can search and replace "(" and ")" as "\(" and "\)".

If there is any function to add slashes for the special characters or some mechanism like that helps me.



Can some one help me for this?

Thanks

Raj


KevinR
Veteran


Jun 11, 2008, 9:13 PM

Post #2 of 5 (8380 views)
Re: [wingsof5r] Reg ex for English (United States) [In reply to] Can't Post
Code
if ($_ =~ /\Q$Language\E/ ) { 
 
}
You can look up \Q and \E in the perl documentation or search for them online. Basically the \Q escapes all none word characters (but not '$' so you can use it with a scalar) and the \E tells the regexp where to stop the escaping.
-------------------------------------------------


hydpm
User

Jun 12, 2008, 12:11 PM

Post #3 of 5 (8359 views)
Re: [KevinR] Reg ex for English (United States) [In reply to] Can't Post
Thanks for the help.

But i made that work as below:

$Language =~s/[\(]/\\(/;
$Language =~s/[\)]/\\)/;

But i am working it to make it in one single serch and replace expression.

I appreciate your help on this.



Thanks,

Raj


KevinR
Veteran


Jun 12, 2008, 2:18 PM

Post #4 of 5 (8355 views)
Re: [wingsof5r] Reg ex for English (United States) [In reply to] Can't Post
Your way could be written like so:

$Language =~s/([()])/\\$1/g;

But \Q is for this exact purpose and should be used.
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(This post was edited by KevinR on Jun 12, 2008, 2:21 PM)


hydpm
User

Jun 13, 2008, 7:12 PM

Post #5 of 5 (8284 views)
Re: [KevinR] Reg ex for English (United States) [In reply to] Can't Post
Kevin,



Thanks for the help.



Raj

 
 


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