Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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#! perl
# make a simple fixed pak file for testing code. This utility is only for testing the code
# before writing the "real" utility.
use File::Find;
use String::CRC32;
use File::Basename;
$ndatfileindex=0;
$ndatoffset=0;
$nullbyte = pack("C",0);
# now, search for files
find( {wanted => \&gotfile, no_chdir=>1 }, "." );
undef $curext;
$datlimit=50 * 1000 * 1000;
foreach $_ ( sort ByExtensionAndDirectory @FilesToPack )
{
local($basename, $dir, $ext ) = fileparse( $_, qr/\.[^.]*/);
$dir=~s@\\@/@g;
$dir=~s@^\./@@;
$dir=~s@/$@@;
$dir=" " unless ( length($dir) );
$ext=~s@^\.@@;
$ext=" " unless ( length($ext) );
print "Add $_ ($dir)\n";
if ( $curext ne $ext )
{
$dirout.=$nullbyte.$nullbyte if length($curext); # mark no more files and end of extension
$dirout.=$ext.$nullbyte;
$dirout.=$dir.$nullbyte;
$curext=$ext;
$curdir=$dir;
}
elsif ( $curdir ne $dir )
{
$dirout.=$nullbyte if length($curdir); # mark no more files
$dirout.=$dir.$nullbyte;
$curdir = $dir;
}
$dirout.=$basename.$nullbyte;
open(DATAIN, $_) || die "can't open $_";
binmode DATAIN;
{ local($/); $fdata=<DATAIN>; }
close DATAIN;
$dirout.=pack("V", CRC32( $fdata) );
$dirout.=pack("v",0); #meta data size
$dirout.=pack("C",$ndatfileindex);
$dirout.=pack("V",length($dataout));
$dirout.=pack("V",length($fdata));
$dataout.=$fdata;
$dirout.=pack("C",-1);
if (length($dataout) > $datlimit )
{
&writedata;
undef $dataout;
$ndatfileindex++;
}
}
$dirout.=$nullbyte.$nullbyte;
open(DIROUT,">test_dir.vpk") || die;
binmode DIROUT;
print DIROUT $dirout;
close DIROUT;
&writedata;
sub writedata
{
my $fname=sprintf("test_%03d.vpk", $ndatfileindex );
print STDERR "\nWriting $fname, length ", length($dataout),"\n";
open(DATAOUT,">$fname") || die;
binmode DATAOUT;
print DATAOUT $dataout;
close DATAOUT;
}
sub gotfile
{
return if ( -d $_ );
s@\\@/@g;
s@^\./@@; # kill leading "./"
$_=lc($_);
local($basename, $dir, $ext ) = fileparse( $_, qr/\.[^.]*/);
return if ($basename=~/\.360$/);
return if ( $ext eq ".dll" );
return if ( $ext eq ".vpk" );
return unless length($ext);
# return unless ( $ext eq ".vtf" );
push @FilesToPack, $_;
}
sub ByExtensionAndDirectory
{
local($basenamea, $dira, $exta ) = fileparse( $a, qr/\.[^.]*/);
local($basenameb, $dirb, $extb ) = fileparse( $b, qr/\.[^.]*/);
return $exta cmp $extb if ( $extb ne $exta );
return $dira cmp $dirb if ( $dira ne $dirb );
return $basenamea cmp $basenameb;
}