#!/usr/bin/perl
if(scalar(@ARGV) < 1){
    print "Please enter filenames\n";
    my $sFilename = <>; chop($sFilename);
    @afilename = split(' ',$sFilename);
}
else { @afilename = @ARGV; }
print "Filenames given = @afilename \n";
foreach my $sFile (@afilename){
    unless(-r "$sFile"){ print "Can't read/found $sFile\n"; next; }
    open FILEHANDLE,"$sFile"  or next;
    print "Starting to sort $sFile\n";
    my @aAllline = <FILEHANDLE>;
    foreach(@aAllline){ 
        if(length($_)<3 || $_ =~ /\/\//) { next; }  
        push(@aLine,$_);
    }
    my @aSortedline = sort _sortById(@aLine);
    unless(-w "$sFile"){ print "Can't writte $sFile.sorted \n"; next; }
    open FILEHANDLE2,">$sFile.sorted" or next;
    my $sI = 0;
    foreach(@aAllline){
        if(length($_)<3 || $_ =~ /\/\//) { print FILEHANDLE2 $_; }
        else { print FILEHANDLE2 $aSortedline[$sI]; }
        $sI++;
    }
}
print "End code\n";
 
sub _sortById {
    my @aAline = split('#',$a);
    my @aBline = split('#',$b);
#   print "a=$a, b=$b\n aline = @aAline \n bline = @aBline \n";
    return (($aAline[0] <=> $aBline[0]) or ($aAline[0] cmp $aBline[0]) ); #cmp only ID
}