#!/usr/bin/perl

use XML::Parser;

@files = <$plrepository/*.xml>;

foreach $xmlfile (@files) {
      #something is omitted
      $p2 = new XML::Parser(Handlers => {Start => \&handle_start,
                                           End   => \&handle_end,
                                           Char  => \&handle_char});
      
      $p2->parsefile($xmlfile);

}
  
  sub handle_start {
   my ($pkg,$element,%attr) = @_;
      $current_element = $element;
      if ( $element =~ /Header/i ) {
        $Number=$attr{Number}; 
        open (OUT, ">$outputfile") or die "No file";
      }
      elsif ( $element =~ /ContentElement/i ) 
      {
         $IdNumber=$attr{IdNumber};
         $InstanceNumber=$attr{InstanceNumber};
      }
     $Number=''; # I empty the variable for the next Number in the fil
+e
     $IdNumber='';
     $InstanceNumber='';
      #something is omitted
  }
  

  
  sub handle_end {
    my ($pkg,$element,%attr) = @_;

    if ( $element =~ /Header/i ) {

        print OUT $Number,"$separator\n";
                print "\tNumber ". $Number . "\n";   
        close (OUT);
    }
    elsif ( $element =~ /ContentElement/i ) 
      {
         print OUT $IdNumber,"$separator\n";
                print "\tIDNumber ". $IdNumber . "\n";  
         print OUT $InstanceNumber,"$separator\n";
                print "\tIstanceNumber ". $InstanceNumber . "\n";     
+            
        close (OUT);
      }
     $Number=''; # I empty the variable for the next Number in the fil
+e
     $IdNumber='';
     $InstanceNumber='';
      #something is omitted 

  }
  
   sub handle_char {
   my $text = $_[1];
    if ( $current_element =~ /^Number$/i ) {
       ($text !~ /^\s*$/) && ($Number .= $text);
                                     #|-> buffer text
    }
    if ( $current_element =~ /^IdNumber$/i ) {
       ($text !~ /^\s*$/) && ($IdNumber .= $text);
                                     #|-> buffer text
    }
    if ( $current_element =~ /IstanceNumber/i ) {
       ($text !~ /^\s*$/) && ($IstanceNumber .= $text);
                                     #|-> buffer text
    }
      #something is omitted
  }
[download]

I have to print out different CSV files like this:

AC_1234,
yyyyyyyy-yy,01463010000016
zzzzzzzz-zz,0000000000000000
xxxxxxxx-xx,111111111111111
aaaaaaaaa-aa,222222222222222
[download]

but without buffering i have something like this:

AC_1234,
yyyyyyyy-yy,01463010000016
zzzzzzzz-zz,0000000000000000
xxx-xx,111111111111111
aaaaaaaaa-aa,22222
[download]

and buffering the text, sometimes happen this:

AC_1234,
yyyyyyyy-yy,01463010000016
zzzzzzzz-zz,0000000000000000
xxxxxxxx-xx,111111111111111
xxxxxxxx-xxaaaaaaaaa-aa,222222222222222111111111111111
[download]

I hope that now something is much more clear. B/R