Re: Regexp - match if not between [ ]


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Re: Regexp - match if not between [ ]

by AnomalousMonk (Archbishop)

on May 30, 2011 at 15:34 UTC ( [id://907330]=note: print w/replies, xml )

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in reply to Regexp - match if not between [ ]

Using Text::CSV would probably be better. However, this regex approach, while more verbose, is perhaps more maintainable. Needs 5.10+ Special Backtracking Control Verbs. (I've made a guess at the proper regex for a A423.23 thingy.)

>perl -wMstrict -le
"my $s = 'The fox did it[ at 12.23 ] well, Cf. 23 A423.23. The '
       . 'swallow was even better';
 print qq{''$s''};
 ;;
 my $parens = qr{ \[ [^]]* \]                   }xms;
 my $cf     = qr{ (?i) cf \.                    }xms;
 my $ref    = qr{ [[:alpha:]]+ \d+ (?: \. \d+)+ }xms;
 my $splitter =
   qr{ (?: $parens | $cf | $ref) (*SKIP)(*FAIL)
       |
       \.
     }xms;
 ;;
 my @ra = split $splitter, $s;
 print qq{'$_'} for @ra;
"
''The fox did it[ at 12.23 ] well, Cf. 23 A423.23. The swallow was eve
+n better''

'The fox did it[ at 12.23 ] well, Cf. 23 A423.23'
' The swallow was even better'
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