Current File : //usr/lib64/perl5/vendor_perl/DBI/ProfileSubs.pm
package DBI::ProfileSubs;
our $VERSION = sprintf("0.%06d", q$Revision: 9395 $ =~ /(\d+)/o);
=head1 NAME
DBI::ProfileSubs - Subroutines for dynamic profile Path
=head1 SYNOPSIS
DBI_PROFILE='&norm_std_n3' prog.pl
This is new and still experimental.
=head1 TO DO
Define come kind of naming convention for the subs.
=cut
use strict;
use warnings;
# would be good to refactor these regex into separate subs and find some
# way to compose them in various combinations into multiple subs.
# Perhaps via AUTOLOAD where \&auto_X_Y_Z creates a sub that does X, Y, and Z.
# The final subs always need to be very fast.
#
sub norm_std_n3 {
# my ($h, $method_name) = @_;
local $_ = $_;
s/\b\d+\b/<N>/g; # 42 -> <N>
s/\b0x[0-9A-Fa-f]+\b/<N>/g; # 0xFE -> <N>
s/'.*?'/'<S>'/g; # single quoted strings (doesn't handle escapes)
s/".*?"/"<S>"/g; # double quoted strings (doesn't handle escapes)
# convert names like log20001231 into log<N>
s/([a-z_]+)(\d{3,})\b/${1}<N>/ig;
# abbreviate massive "in (...)" statements and similar
s!((\s*<[NS]>\s*,\s*){100,})!sprintf("$2,<repeated %d times>",length($1)/2)!eg;
return $_;
}
1;
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