ch08.018_prob

来自「Perl Best Practices the source code」· 018_PROB 代码 · 共 60 行

##############################################################################
## Code fragment (NOT RECOMMENDED) from Chapter 8 of "Perl Best Practices"  ##
##     Copyright (c) O'Reilly & Associates, 2005. All Rights Reserved.      ##
##  See: http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html  ##
##############################################################################


# Standard modules...
use strict;
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;

my $sales_data = \*DATA;
my @sales;

sub translate_ID {
    my ($id) = @_;
    return $id;
}

# Specify order and lengths of fields...

Readonly my $RECORD_LAYOUT 
    => qr/\A (.{6}) (.{10}) (.{8}) /xms;

 
# Grab each line/record...

while (my $record = <$sales_data>) {
 
    # Extract all fields...

    my ($ident, $sales, $price) 
        = $record =~ m/ $RECORD_LAYOUT /xms;
 

    # Append each record, translating ID codes and
    # normalizing sales (which are stored in 1000s)...

    push @sales, { 
        ident => translate_ID($ident),
        sales => $sales * 1000,
        price => $price,
    };
}


use Data::Dumper 'Dumper';
warn Dumper [ @sales ];


__DATA__
X123-S000001324700000199
SFG-AT000000010200009099
Y811-Q000010030000000033