<?php
header('Content-type: text/plain');

$maxFnLen = 0;
$totalFileSizes = 0;
$totalCompressed = 0;
$totalUncompressed = 0;
$totalUsed = 0;

$updates = array_filter(array_reverse(file('resources2.txt')));
$files = array();

foreach ($updates as &$update)
{
	list($file, $hash) = explode(' ', trim($update));
	$maxFnLen = max(strlen($file), $maxFnLen);
	$z = zip_open($file);

	$update = array(
		'file' => $file,
		'hash' => $hash,
		'file_size' => filesize($file),
		'compressed_size' => 0,
		'uncompressed_size' => 0,
		'files' => 0,
		'used_files' => 0,
		'used_size' => 0,
		'used_percentage' => 0,
	);

	while ($e = zip_read($z))
	{
		$update['files']++;
		$update['compressed_size'] += zip_entry_compressedsize($e);
		$update['uncompressed_size'] += zip_entry_filesize($e);

		$fn = zip_entry_name($e);
		if (in_array($fn, $files))
			continue;

		$files[] = $fn;
		$update['used_files']++;
		$update['used_size'] += zip_entry_compressedsize($e);
	}

	$update['used_percentage'] =
		100*$update['used_size']/$update['compressed_size'];

	$totalFileSizes += $update['file_size'];
	$totalCompressed += $update['compressed_size'];
	$totalUncompressed += $update['uncompressed_size'];
	$totalUsed += $update['used_size'];
}

echo "List of current updates:\n\n";

foreach (array_reverse($updates) as $update)
	printf("%-{$maxFnLen}s %s %5u kb %5u kb %6.2f%% used (%u/%u files)\n",
		$update['file'], $update['hash'], $update['file_size']/1024,
		$update['uncompressed_size']/1024, $update['used_percentage'],
		$update['used_files'], $update['files']);

printf('
Amount of data: %6u kb (+%u kb zip file overhead)
Uncompressed:   %6u kb
Obsoleted data: %6u kb (%.2f%%)',
	$totalCompressed / 1024, ($totalFileSizes - $totalCompressed) / 1024,
	$totalUncompressed / 1024, ($totalCompressed - $totalUsed) / 1024,
	(1 - $totalUsed / $totalCompressed) * 100);
?>