#!/usr/bin/php
<?

// Polyfill
// Fill a volume with many small files

if (count($argv) < 5) {
	echo "Usage: php polyfill.php <dir containing sample files> <files> <deep> <disk image destination>\n";
	echo "ex.: ./polyfill.php sample_files 5000 1 ~/Desktop/\n"; 
	die;
	}

$sample = $argv[1];
$total = $argv[2];
$deep =  $argv[3];
$dest = $argv[4];

$dmg = $dest."/Polyfill.sparsebundle";

if (file_exists($dmg)) {
	exec("trash ".$dmg."; umount -f /Volumes/Polyfill");
	}
exec("hdiutil create -size 1tb -fs HFS+ -type SPARSEBUNDLE -volname Polyfill -attach ".$dmg);

$base = "/Volumes/Polyfill";
$sample_files = glob($sample."/*.*");
foreach($sample_files as $key => $file) {
	if (is_dir($file)) {
		unset($sample_files[$key]);
		}
	}

for ($i = 0; $i < $total; $i++) {

	$stamp = md5(microtime());
	$levels = array();
	$levels[] = substr($stamp,0,2);
	$levels[] = substr($stamp,2,2);
	$levels[] = substr($stamp,4,2);
	$levels[] = substr($stamp,6,2);
	$levels[] = substr($stamp,8,2);
	$levels[] = substr($stamp,10,2);
	
	if ($deep) {
	
		$dest = $base."/".implode("/",$levels)."/".$stamp;
	
		$check = array();
		$check[] = $base."/".$levels[0];
		$check[] = $base."/".$levels[0]."/".$levels[1];
		$check[] = $base."/".$levels[0]."/".$levels[1]."/".$levels[2];
		$check[] = $base."/".$levels[0]."/".$levels[1]."/".$levels[2]."/".$levels[3];
		$check[] = $base."/".$levels[0]."/".$levels[1]."/".$levels[2]."/".$levels[3]."/".$levels[4];
		$check[] = $base."/".$levels[0]."/".$levels[1]."/".$levels[2]."/".$levels[3]."/".$levels[4]."/".$levels[5];

		foreach ($check as $dir) {
			echo "check ".$dir."\n";
			if (!file_exists($dir)) {
				mkdir($dir);
				}
			}
		
		} else {
		
		$dest = $base."/".$stamp;
		
		}
	
	$use = $sample_files[array_rand($sample_files)];
	$ext = pathinfo($use, PATHINFO_EXTENSION);
	echo "cp ".$use." ".$dest.".".$ext."\n";
	
	copy($use,$dest.".".$ext);
	//copy($use,dirname($dest)."/".basename($use)); // make many dupes

	}

exec("open /Volumes/Polyfill");

?>