Hi Perlmonks,

I am interested in merging multiple (3) excel files sheet-wise i.e. cereal.xls, pulse.xls and fruit.xls,each having two sheets i.e. sheet1 and sheet2, into a single outputfile like result.xls. The sheet1 of result file must contain the contents of sheet1 of 3 input files in sequential rows. Similarly, the sheet2 of result file must contain the contents of sheet2 of 3 input files. While searching the web I have come across a program, given below, to merge excel files but the result file obtained from this program contains the values of sheet1 of 3 input files as sheet1, sheet2 and sheet3; rather the contents of sheet1, sheet2 and sheet3 should be in sheet1 of result.xls. I am using a Windows 7 64-bit pc and comfortable with .xls and not .xlsx. I have tried to get the desired output but failed. I request Perlmonks to suggest me how to sort out this problem.

 
#!/usr/bin/perl
use warnings; 
use strict;

use Spreadsheet::ParseExcel;
use Spreadsheet::WriteExcel;


my $parser = Spreadsheet::ParseExcel->new(); #Creating Object to Read 
+Worksheet

my @files = qw/ cereal.xls pulse.xls fruit.xls /;

my $write_workbook = new Spreadsheet::WriteExcel('Result.xls');

my $n = 1;

foreach my $file (@files) {

    my $parse_workbook = $parser->parse($file);

    my $write_worksheet = $write_workbook->add_worksheet("Sheet$n");

    if ( !defined $parse_workbook) { die $parser->error(), ".\n"; }


    for my $parse_worksheet ( $parse_workbook->worksheets() ) {

        my ( $row_min, $row_max ) = $parse_worksheet->row_range();
        my ( $col_min, $col_max ) = $parse_worksheet->col_range();

        for my $row ( $row_min .. $row_max ) {
            for my $col ( $col_min .. $col_max ) {
                my $cell = $parse_worksheet->get_cell( $row, $col );
                next unless $cell;
                my $cell_value = $cell->value();
                my $cell_format = $cell->get_format();
                $write_worksheet->write($row, $col, $cell_value);
            }
        }
    }

    $n++;
}  

print "\n\n
#######################################
  Result produced\n
#######################################\n"; 
exit;
[download]

 The contents of cereal.xls are as follows:
Sheet1
No.    Name    Sugar (g/100g)
1    Wheat    0.3
2    Maize    7.7
3    Rice    0.1 
Sheet2
No.    Name    Protein (g/100g)
1    Wheat    10
2    Maize    7
3    Rice    2.6
[download]

 The contents of pulse.xls are as follows:
Sheet1 
No.    Name    Sugar (g/100g)
1    Pea    6
2    Chickpea    11
3    Pigeonpea    1.8
Sheet2
No.    Name    Protein (g/100g)
1    Pea        5
2    Chickpea    8.4
3    Pigeonpea    7.6
[download]

 The contents of fruit.xls are as follows:
Sheet1
No.    Name    Sugar (g/100g)
1    Apple    10
2    Pear    10
3    Pineapple    10
Sheet2
No.    Name    Protein (g/100g)
1    Apple    0.3
2    Pear    0.4
3    Pineapple    0.5
[download]

 The desired result.xls file should look like:
Sheet1
No.    Name    Sugar (g/100g)
1    Wheat    0.3
2    Maize    7.7
3    Rice    0.1
1    Pea    6
2    Chickpea    11
3    Pigeonpea    1.8
1    Apple    10
2    Pear    10
3    Pineapple    10
[download]

Sheet2
No.    Name    Protein (g/100g)
1    Wheat    10
2    Maize    7
3    Rice    2.6
1    Pea        5
2    Chickpea    8.4
3    Pigeonpea    7.6
1    Apple    0.3
2    Pear    0.4
3    Pineapple    0.5
[download]