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<?php
/**
* @return bool
* @param string $in
* @param string $out
* @desc compressing the file with the bzip2-extension
*/
function bzip2 ($in, $out)
{
if (!file_exists ($in) || !is_readable ($in))
return false;
if ((!file_exists ($out) && !is_writeable (dirname ($out)) || (file_exists($out) && !is_writable($out)) ))
return false;
$in_file = fopen ($in, "rb");
$out_file = bzopen ($out, "wb");
while (!feof ($in_file)) {
$buffer = fgets ($in_file, 4096);
bzwrite ($out_file, $buffer, 4096);
}
fclose ($in_file);
bzclose ($out_file);
return true;
}
/**
* @return bool
* @param string $in
* @param string $out
* @desc uncompressing the file with the bzip2-extension
*/
function bunzip2 ($in, $out)
{
if (!file_exists ($in) || !is_readable ($in))
return false;
if ((!file_exists ($out) && !is_writeable (dirname ($out)) || (file_exists($out) && !is_writable($out)) ))
return false;
$in_file = bzopen ($in, "rb");
$out_file = fopen ($out, "wb");
while ($buffer = bzread ($in_file, 4096)) {
fwrite ($out_file, $buffer, 4096);
}
bzclose ($in_file);
fclose ($out_file);
return true;
}
?>
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