Don't see how your regex could do what you say. Your "^(\d)$" is looking for a SINGLE digit between start of record/string, "^," and the end of same, "$."

What follows sorta' does what you're talking about altho in the regex you'll need to do "(012346" rather than "(\d{6}" or some variant of (any digit except 5,7, 8 or 9) or similarly clunky approaches to deal with the exact string

and, is this homework? If so, it's a good idea to mention ('fess up) that fact, so monks can teach without actually DOING the homework.


#!C:/perl/bin -w
use strict;

use vars qw ($input @input @img $img);

@input = <DATA> ;

foreach $input (@input) {
    if ( $input =~         # Caret in next line: Start at begining of 
+string/record/whatever
            /^(\d{6}            # sTART CAPTURE, with any digit, [0-9]
+, exactly six times.
            (-                    # optionally (trailing "?") in a NON
+-capture-group: a dash followed by a
            \w{3})?            # word char, exactly 3 times; end group
+ing parens
            \.jpg$            # literal period followed by "jpg" endin
+g the string
            )                    # end capture
            /ix ) {             #case insensitive (to catch -all and -
+EXP); extended form

    push(@img, $input);
    }
}
print "\n\t+++++\n";
print @img;
print "\n\tdone\n";
exit;

__DATA__
012346.jpg
012346-all.jpg
012346-EXP.jpg
012346-exp.jpg
012346-ALL.jpg
012345.jpg
12345.jpg
01234.jpeg
0123345+ALL.jpg
0123345-exp.jpg
0123345-ALL.jpg
not_jpg.last

[download]
note that the last 6 items in data do NOT match the regex.

In reply to Re: regex help by ww
in thread regex help by calypso

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