#!/usr/bin/perl -w

###############################################################################
#
# Example of how to add a user defined data handler to the Spreadsheet::
# WriteExcel write() method.
#
# The following example shows how to add a handler for a 7 digit ID number.
#
#
# reverse('©'), September 2004, John McNamara, jmcnamara@cpan.org
#

use strict;
use Spreadsheet::WriteExcel;


my $workbook    = Spreadsheet::WriteExcel->new("write_handler1.xls");
my $worksheet   = $workbook->add_worksheet();


###############################################################################
#
# Add a handler for 7 digit id numbers. This is useful when you want a string
# such as 0000001 written as a string instead of a number and thus preserve
# the leading zeroes.
#
# Note: you can get the same effect using the keep_leading_zeros() method but
# this serves as a simple example.
#
$worksheet->add_write_handler(qr[^\d{7}$], \&write_my_id);


###############################################################################
#
# The following function processes the data when a match is found.
#
sub write_my_id {

    my $worksheet = shift;

    return $worksheet->write_string(@_);
}


# This format maintains the cell as text even if it is edited.
my $id_format   = $workbook->add_format(num_format => '@');


# Write some numbers in the user defined format
$worksheet->write('A1', '0000000', $id_format);
$worksheet->write('A2', '0000001', $id_format);
$worksheet->write('A3', '0004000', $id_format);
$worksheet->write('A4', '1234567', $id_format);

# Write some numbers that don't match the defined format
$worksheet->write('A6', '000000',  $id_format);
$worksheet->write('A7', '000001',  $id_format);
$worksheet->write('A8', '004000',  $id_format);
$worksheet->write('A9', '123456',  $id_format);


__END__