Regex help please :( 2

[perlone]

Hello,

I have some image files that has names like:

PC-blah1.jpg
GBA-test.jpg

Is there anyway I can get the value 'blah1' and 'test'? I need to get the value between the '-' and '.jpg' . If you can, please help and thank you so much for reading.

-Aaron

 

[Rieekan]

When you're doing your Regex, you can use the following Variables to grab what you're looking for. It won't be pretty, but it will work.

$` - Returns everything before the match
$' - Returns everything after the match
$& - Returns only the match
$+ - Returns the last paranthetical match

Hope this helps!

- Rieekan

 

[fishiface]

I'd be tempted to use the more familiar

   my @names = qw{
      PC-blah1.jpg
      GBA-test.jpg
   };

   foreach ( @names ) {
      /[^-]*-([^.]+)\./ && print "$_ -> $1\n";
   }

This means

[^-]*

match any character which is not a minus any number of times

-

match a minus sign

(

start collecting into $1

[^.]+

match anything other than a period one or more times

)

stop collecting into $1

\.

match a literal period

Hope this helps,

Yours,


fish

"As soon as we started programming, we found to our surprise that it wasn't as easy to get programs right as we had thought. Debugging had to be discovered. I can remember the exact instant when I realized that a large part of my life from then on was going to be spent in finding mistakes in my own programs."
--Maurice Wilkes

 

[perlone]

thank you!

 

[MikeLacey]

Using Rieekan's approach above:
[tt]
$_="PC-blah1.jpg";
/-/; # find the /
$_=$'; # save everything after it
/\./; # find the .
$_=$`; # save everything before it
print; # print result
[/tt]


Mike

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