Here is an example of a solution:
use Modern::Perl '2014';
use Spreadsheet::ParseExcel::Simple;
use Spreadsheet::WriteExcel;

my $xls_in  = Spreadsheet::ParseExcel::Simple->read('./spreadsheet_in.
+xls');
my $xls_out = Spreadsheet::WriteExcel->new('./spreadsheet_out.xls');

foreach my $sheet ( $xls_in->sheets ) {
    my $active_sheet = $xls_out->add_worksheet();
    my @sheet_data;
    while ( $sheet->has_data ) {
        my @data = $sheet->next_row;
        push @sheet_data, \@data;
    }
    push @sheet_data, ['This data is added at the end'];
    $active_sheet->write_col( 0, 0, \@sheet_data );
}

$xls_out->close();

[download]
This is not a complete solution: for instance, it does not pick up any formatting or names of the sheets. If you want that, you cannot use Spreadsheet::ParseExcel::Simple but you will have to use Spreadsheet::ParseExcel.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

My blog: Imperial Deltronics

In reply to Re^3: Append new line in excel sheets by CountZero
in thread Append new line in excel sheets by perl_new_b

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