#!/usr/bin/perl

# Computes and prints to stdout the CRC-32 values of the given files

use 5.006;

use strict;

use lib qw( blib/lib lib );

use Archive::Zip;

use FileHandle;

use vars qw( $VERSION );

BEGIN {

    $VERSION = '1.51';

}

my $totalFiles = scalar(@ARGV);

foreach my $file (@ARGV) {

    if ( -d $file ) {

        warn "$0: ${file}: Is a directory\n";

        next;

    }

    my $fh = FileHandle->new();

    if ( !$fh->open( $file, 'r' ) ) {

        warn "$0: $!\n";

        next;

    }

    binmode($fh);

    my $buffer;

    my $bytesRead;

    my $crc = 0;

    while ( $bytesRead = $fh->read( $buffer, 32768 ) ) {

        $crc = Archive::Zip::computeCRC32( $buffer, $crc );

    }

    my $fileCrc = sprintf("%08x", $crc);

    printf("$fileCrc");

    print("\t$file") if ( $totalFiles > 1 );

    if ( $file =~ /[^[:xdigit:]]([[:xdigit:]]{8})[^[:xdigit:]]/ ) {

	my $filenameCrc = $1;

	if ( lc($filenameCrc) eq lc($fileCrc) ) {

	    print("\tOK")

	} else {

	    print("\tBAD $fileCrc != $filenameCrc");

        }

    }

    print("\n");

}