When parsing strings I usually go for the 'brute-force' approach (I'm just that kinda guy), splitting around each char and testing one-at-a-time:
use feature ":5.10";
use strict;
use warnings;
my $line = "05/04/2010 13:09:45 - A - somebody - ( ( my.my id >= 1 ) )
+ and ( ( is-relative.to code = 'sister' ) or ( is-relative.to code =
+'brother' ) or ( is-mother.to code = 'dog' ) )";
my $open = 0;
my @result = ('');
for my $char (split ('',$line)) {
given ($char) {
when ('(') {
$open++
}
when (')') {
$open--;
push @result,''
}
default {
$result[-1] .= $char if $open
}
}
}
That gives me:
my.my id >= 1
is-relative.to code = 'sister'
or is-relative.to code = 'brother'
or is-mother.to code = 'dog'
Which is not good enough, so I need some tidy-up:
for my $line (@result) {
$line =~ s/^\s+(?:or\s+)?(.*)[ ><!=]=.*/$1\n/;
}
@result = grep !/^\s+$/,@result;
print @result,"\n";
Which gives:
my.my id
is-relative.to code
is-relative.to code
is-mother.to code
which I think is what you are looking for. Not sure that it is all that elegant though.
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