My last posting here was 3yrs, 3 months, 2 days ago; so please be understanding if my question is simply obvious.

Working with SpreadSheet::Read . Starting with a working sample program and trying to determine how to split the opening of the spreadsheet from subroutines that do the examination and extraction. That is failing.

    #!/usr/bin/perl
    use strict;
    use warnings;
    use 5.010;
     
    use Spreadsheet::Read qw(ReadData);
     
    my $book = ReadData('simple.xlsx');
     
    say 'A1: ' . $book->[1]{A1}; 
     
    my @row = Spreadsheet::Read::row($book->[1], 1);
    for my $i (0 .. $#row) {
        say 'A' . ($i+1) . ' ' . ($row[$i] // '');
    }
     
    my @rows = Spreadsheet::Read::rows($book->[1]);
    foreach my $i (1 .. scalar @rows) {
        foreach my $j (1 .. scalar @{$rows[$i-1]}) {
            say chr(64+$i) . " $j " . ($rows[$i-1][$j-1] // '');
        }
    }
     
  link : https://stackoverflow.com/questions/19782080/how-to-read-data
+-from-xlsx-in-perl [2]
[download]

Inline is simple. I wanted to test a more complex program with subroutines or modules working on the data structure returned by SpreadSheet::Read(). In every case, code that was outside the scope of the SpreadSheet::Read opening the file, the knowledge of what was at that address seemed to be lost. That makes sense.

#!/usr/bin/perl

#https://stackoverflow.com/questions/19782080/how-to-read-data-from-xl
+sx-in-perl

use strict;
use warnings;
use 5.010;

use Spreadsheet::Read;

#my $workbook;  # try a global array ref to excel structure -failed

######################################################################
+######
# function input  : file in xlsx format with absolute path 
# function output : prints 1st worksheet content if exist
######################################################################
+######
sub print_xlsx_file{
    print ">>print_xlsx_file\n";
        
    my $REFworkbook = shift; 
    my $PageNum;
        
    for $PageNum (1..7) {
        my $worksheet = $REFworkbook->sheet($PageNum);
        my $max_rows = $worksheet->{'maxrow'};
        my $max_cols = $worksheet->{'maxcol'};

        print "Stats Page $PageNum ". "$max_rows x $max_cols\n";
    }

}


#===================== MAIN


# call above function

my $file_path = shift;     # passed full path

my $workbook = ReadData($file_path,cells => 0 );
my $PageNum=1;
    
if(defined $workbook->[0]{'error'}){
    print "Error occurred while processing $file_path:".
            $workbook->[0]{'error'}."\n";
    exit(-1);
}
print_xlsx_file ($workbook);
[download]

As I write this, I am thinking more that it will have to be a huge linear script.

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