#!/usr/bin/perl --
#~ perltidy  -csc -otr -opr -ce -nibc -i=4
use strict;
use warnings;
use autodie;
use IO::Handle;

Main( @ARGV );
exit( 0 );

sub Main {
    local *ARGV;
    local $^I;

    my $pre = shift @_;
    local @ARGV = @_;

    for (@ARGV) {
        s/^(\s+)/.\/$1/;    # leading whitespace preserved
        s/^/< /;            # force open for input
        $_ .= qq/\0/;       # trailing whitespace preserved & pipes forbidden
    }

    my $linenum = 0;
    my $filenum = 0;
    my $skipped = 0;

    open FILEOUT, '>', $pre . "-" . $filenum;

    while (<ARGV>) {
        if (/^\s*$/) {
            $skipped++;
            next;
        } elsif ( $linenum <= 300000 ) {
            print FILEOUT $_;
            $linenum++;
        } elsif ( $linenum > 300000 ) {
            $linenum = 0;    # reset line counter every 300,000 lines
            $filenum++;      #  increment file counter every 300,000 lines
                             #  and open new file handle
            close FILEOUT;
            open FILEOUT, '>', $pre . "-" . $filenum;
            print FILEOUT $_;
        } ## end elsif ( $linenum > 300000)
    } ## end while (<>)
    
    close FILEOUT;
    
    my $countedLines = ( ( ( $filenum - 1 ) * 300_000 ) + $linenum );
    
    warn "# TOTAL files $filenum \n",                ARGV->input_line_number;
    warn '# ($filenum -1 ) * 300_000 + $linenum = ', "$countedLines\n";
    warn "# TOTAL lines ", ARGV->input_line_number, "\n";
    warn "# TOTAL SKIPPED $skipped\n";
    warn "# COUNTED + SKIPPED  = ", $countedLines + $skipped, "\n";
} ## end sub Main