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Merged changes from rel-1-2

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tonnesen 2002-06-20 20:41:21 +00:00
parent 1929403b8f
commit cceee9e230
1 changed files with 43 additions and 42 deletions
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85
C4/Input.pm
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@ -1,52 +1,17 @@
package C4::Input; #asummes C4/Input
#package to deal with marking up output
package C4::Input; #assumes C4/Input
use strict;
require Exporter;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
use vars qw($VERSION @ISA @EXPORT);
# set the version for version checking
$VERSION = 0.01;
@ISA = qw(Exporter);
@EXPORT = qw(&checkflds &checkdigit);
%EXPORT_TAGS = ( ); # eg: TAG => [ qw!name1 name2! ],
# your exported package globals go here,
# as well as any optionally exported functions
@EXPORT_OK = qw($Var1 %Hashit);
# non-exported package globals go here
use vars qw(@more $stuff);
# initalize package globals, first exported ones
my $Var1 = '';
my %Hashit = ();
# then the others (which are still accessible as $Some::Module::stuff)
my $stuff = '';
my @more = ();
# all file-scoped lexicals must be created before
# the functions below that use them.
# file-private lexicals go here
my $priv_var = '';
my %secret_hash = ();
# here's a file-private function as a closure,
# callable as &$priv_func; it cannot be prototyped.
my $priv_func = sub {
# stuff goes here.
};
# make all your functions, whether exported or not;
@EXPORT = qw(
&checkflds &checkdigit &checkvalidisbn
);
sub checkflds {
my ($env,$reqflds,$data) = @_;
@ -86,7 +51,43 @@ sub checkdigit {
$valid = 1;
}
return $valid;
}
} # sub checkdigit
#--------------------------------------
# Determine if a number is a valid ISBN number, according to length
# of 10 digits and valid checksum
sub checkvalidisbn {
use strict;
my ($q)=@_ ; # Input: ISBN number
my $isbngood = 0; # Return: true or false
$q=~s/x$/X/g; # upshift lower case X
$q=~s/[^X\d]//g;
$q=~s/X.//g;
if (length($q)==10) {
my $checksum=substr($q,9,1);
my $isbn=substr($q,0,9);
my $i;
my $c=0;
for ($i=0; $i<9; $i++) {
my $digit=substr($q,$i,1);
$c+=$digit*(10-$i);
}
$c=int(11-($c/11-int($c/11))*11+.1);
($c==10) && ($c='X');
if ($c eq $checksum) {
$isbngood=1;
} else {
$isbngood=0;
}
} else {
$isbngood=0;
} # if length good
return $isbngood;
} # sub checkvalidisbn
END { } # module clean-up code here (global destructor)