* fixed checksum routine. the old test data ended in zero,
so when i kept getting zero, it didn't realize something was
wrong. when i added more ISMNs, it figured it out.
brian d foy
21 years ago
| 0 | |
M-021-76543-0
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0 |
M-706208-05-3
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1 |
M-706208-01-5
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2 |
M-706208-02-2
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3 |
M-706208-05-3
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4 |
M-706208-06-0
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5 |
M-706208-09-1
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6 |
M-706208-10-7
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7 |
M-706208-11-4
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8 |
M-706208-12-1
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|
9 |
M-706217-00-0
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|
10 |
M-706217-01-7
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11 |
M-706217-02-4
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|
12 |
M-706228-01-3
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13 |
M-706228-02-0
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14 |
M-50093-001-3
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15 |
M-2020-0651-1
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16 |
M-2020-0291-9
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17 |
M-2019-7401-9
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18 |
M-50093-001-3
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|
19 |
M-50093-002-0
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20 |
M-50093-005-1
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21 |
M-50093-007-5
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|
22 |
M-50093-008-2
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|
23 |
M-50093-010-5
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|
24 |
M-50093-011-2
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|
25 |
M-50093-012-9
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|
26 |
M-50093-015-0
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|
27 |
M-50093-016-7
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|
28 |
M-50093-017-4
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29 |
M-50093-018-1
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30 |
M-50093-020-4
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31 |
M-50093-021-1
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32 |
M-50093-022-8
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33 |
M-50093-023-5
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34 |
M-50093-024-2
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|
35 |
M-50093-025-9
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|
36 |
M-50093-026-6
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|
37 |
M-50093-027-3
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|
38 |
M-50093-029-7
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|
39 |
M-50093-030-3
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|
40 |
M-50093-031-0
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|
41 |
M-50093-032-7
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|
42 |
M-50093-026-6
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|
43 |
M-50093-028-0
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|
44 |
M-50093-033-4
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|
45 |
M-50093-029-7
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|
46 |
M-50093-034-1
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|
47 |
M-50093-035-8
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|
48 |
M-50093-035-8
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|
49 |
M-50093-032-7
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|
50 |
M-50093-036-5
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|
51 |
M-50093-024-2
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52 |
M-50093-009-9
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53 |
M-50093-038-9
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|
54 |
M-50093-039-6
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55 |
M-50093-016-7
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56 |
M-50093-041-9
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|
57 |
|
| 0 | 0 |
package Business::ISMN;
|
| 1 | |
# $Revision: 1.1 $
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| 2 | |
# $Id: ISMN.pm,v 1.1 2002/09/09 16:38:25 comdog Exp $
|
|
1 |
# $Revision: 1.2 $
|
|
2 |
# $Id: ISMN.pm,v 1.2 2002/09/09 19:52:01 uid59984 Exp $
|
| 3 | 3 |
|
| 4 | 4 |
use strict;
|
| 5 | 5 |
use subs qw( _common_format _checksum is_valid_checksum
|
|
| 13 | 13 |
|
| 14 | 14 |
use Exporter;
|
| 15 | 15 |
use List::Util qw(sum);
|
| 16 | |
use Tie::Toggle;
|
|
16 |
use Tie::Cycle;
|
| 17 | 17 |
use Business::ISMN::Data;
|
| 18 | 18 |
|
| 19 | 19 |
my $debug = 0;
|
|
| 22 | 22 |
@EXPORT_OK = qw(is_valid_checksum ean_to_ismn ismn_to_ean
|
| 23 | 23 |
INVALID_PUBLISHER_CODE BAD_CHECKSUM GOOD_ISMN BAD_ISMN);
|
| 24 | 24 |
|
| 25 | |
($VERSION) = q$Revision: 1.1 $ =~ m/(\d+\.\d+)\s*$/;
|
|
25 |
($VERSION) = q$Revision: 1.2 $ =~ m/(\d+\.\d+)\s*$/;
|
| 26 | 26 |
|
| 27 | 27 |
sub INVALID_PUBLISHER_CODE { -3 };
|
| 28 | 28 |
sub BAD_CHECKSUM { -1 };
|
|
| 259 | 259 |
sub _checksum
|
| 260 | 260 |
{
|
| 261 | 261 |
my $data = _common_format shift;
|
| 262 | |
$data =~ s/^M/1/i;
|
| 263 | |
|
| 264 | |
tie my $factor, 'Tie::Toggle', [ 3, 1 ];
|
|
262 |
|
|
263 |
tie my $factor, 'Tie::Cycle', [ 1, 3 ];
|
| 265 | 264 |
return unless defined $data;
|
| 266 | 265 |
|
| 267 | |
my $sum = sum( map $factor * $_, substr( $data, 0, 9 ) );
|
| 268 | |
|
|
266 |
my $sum = 9;
|
|
267 |
|
|
268 |
foreach my $digit ( split //, substr( $data, 1, 8 ) )
|
|
269 |
{
|
|
270 |
my $mult = $factor;
|
|
271 |
$sum += $digit * $mult;
|
|
272 |
}
|
|
273 |
|
|
274 |
|
| 269 | 275 |
#return what the check digit should be
|
| 270 | |
my $checksum = $sum % 10;
|
| 271 | |
|
|
276 |
# the extra mod 10 turns 10 into 0.
|
|
277 |
my $checksum = ( 10 - ($sum % 10) ) % 10;
|
|
278 |
|
| 272 | 279 |
return $checksum;
|
| 273 | 280 |
}
|
| 274 | 281 |
|
| 0 | |
# $Revision: 1.1 $
|
|
0 |
# $Revision: 1.2 $
|
| 1 | 1 |
|
| 2 | 2 |
use Test::More tests => 18;
|
| 3 | 3 |
|
| 4 | 4 |
use Business::ISMN;
|
| 5 | 5 |
|
| 6 | |
my $GOOD_ISMN = "M021765430";
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| 7 | |
my $GOOD_ISMN_STRING = "M-021-76543-0";
|
| 8 | |
my $GOOD_EAN = "9790021765439";
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| 9 | |
my $PUBLISHER = "021";
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| 10 | |
my $BAD_CHECKSUM_ISMN = "M021765436";
|
|
6 |
my $GOOD_ISMN = "M706208053";
|
|
7 |
my $GOOD_ISMN_STRING = "M-706208-05-3";
|
|
8 |
my $GOOD_EAN = "9790706208053";
|
|
9 |
my $PUBLISHER = "706208";
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|
10 |
my $BAD_CHECKSUM_ISMN = "M706208057";
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| 11 | 11 |
my $BAD_PUBLISHER_ISMN = "M456922572";
|
| 12 | 12 |
my $NULL_ISMN = undef;
|
| 13 | 13 |
my $NO_GOOD_CHAR_ISMN = "abcdefghij";
|
|
| 74 | 74 |
while( <FILE> )
|
| 75 | 75 |
{
|
| 76 | 76 |
chomp;
|
|
77 |
next unless /\S+/;
|
| 77 | 78 |
my $ismn = Business::ISMN->new( $_ );
|
| 78 | 79 |
|
| 79 | 80 |
my $result = $ismn->is_valid;
|