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<?php
/**
* Smarty write file plugin
*
* @package Smarty
* @subpackage PluginsInternal
* @author Monte Ohrt
*/
/**
* Smarty Internal Write File Class
*
* @package Smarty
* @subpackage PluginsInternal
*/
class Smarty_Internal_Runtime_WriteFile
{
/**
* Writes file in a safe way to disk
*
* @param string $_filepath complete filepath
* @param string $_contents file content
* @param Smarty $smarty smarty instance
*
* @throws SmartyException
* @return boolean true
*/
public function writeFile($_filepath, $_contents, Smarty $smarty)
{
$_error_reporting = error_reporting();
error_reporting($_error_reporting & ~E_NOTICE & ~E_WARNING);
$_file_perms = property_exists($smarty, '_file_perms') ? $smarty->_file_perms : 0644;
$_dir_perms = property_exists($smarty, '_dir_perms') ? (isset($smarty->_dir_perms) ? $smarty->_dir_perms : 0777) : 0771;
if ($_file_perms !== null) {
$old_umask = umask(0);
}
$_dirpath = dirname($_filepath);
// if subdirs, create dir structure
if ($_dirpath !== '.' && !file_exists($_dirpath)) {
mkdir($_dirpath, $_dir_perms, true);
}
// write to tmp file, then move to overt file lock race condition
$_tmp_file = $_dirpath . DS . str_replace(array('.', ','), '_', uniqid('wrt', true));
if (!file_put_contents($_tmp_file, $_contents)) {
error_reporting($_error_reporting);
throw new SmartyException("unable to write file {$_tmp_file}");
}
/*
* Windows' rename() fails if the destination exists,
* Linux' rename() properly handles the overwrite.
* Simply unlink()ing a file might cause other processes
* currently reading that file to fail, but linux' rename()
* seems to be smart enough to handle that for us.
*/
if (Smarty::$_IS_WINDOWS) {
// remove original file
if (is_file($_filepath)) {
@unlink($_filepath);
}
// rename tmp file
$success = @rename($_tmp_file, $_filepath);
} else {
// rename tmp file
$success = @rename($_tmp_file, $_filepath);
if (!$success) {
// remove original file
if (is_file($_filepath)) {
@unlink($_filepath);
}
// rename tmp file
$success = @rename($_tmp_file, $_filepath);
}
}
if (!$success) {
error_reporting($_error_reporting);
throw new SmartyException("unable to write file {$_filepath}");
}
if ($_file_perms !== null) {
// set file permissions
chmod($_filepath, $_file_perms);
umask($old_umask);
}
error_reporting($_error_reporting);
return true;
}
}
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