/**
* Internal function for making link to cache
*
* @return String containing an HTML tag reference to given reference
*/
protected function _cache_url($filename)
{
// build link from cache url + cache filename
return Minimee_helper::remove_double_slashes($this->config->cache_url . '/' . $filename, TRUE);
}
/**
* Internal function for writing cache files
* [Adapted from CodeIgniter Carabiner library]
*
* @param String of contents of the new file
* @return boolean Returns true on successful cache, false on failure
*/
protected function _write_cache($file_data)
{
if ($this->EE->extensions->active_hook('minimee_pre_write_cache')) {
Minimee_helper::log('Hook `minimee_pre_write_cache` has been activated.', 3);
// pass contents of file, and instance of self
$file_data = $this->EE->extensions->call('minimee_pre_write_cache', $file_data, $this);
if ($this->EE->extensions->end_script === TRUE) {
return;
}
}
$filepath = Minimee_helper::remove_double_slashes($this->config->cache_path . '/' . $this->cache_filename);
$success = file_put_contents($filepath, $file_data);
if ($success === FALSE) {
throw new Exception('There was an error writing cache file ' . $this->cache_filename . ' to ' . $this->config->cache_path);
}
if ($success === 0) {
Minimee_helper::log('The new cache file is empty.', 2);
}
// borrowed from /system/expressionengine/libraries/Template.php
// FILE_READ_MODE is set in /system/expressionengine/config/constants.php
@chmod($filepath, FILE_READ_MODE);
Minimee_helper::log('Cache file `' . $this->cache_filename . '` was written to ' . $this->config->cache_path, 3);
// creating the compressed file
if ($this->config->is_yes('save_gz')) {
$z_file = gzopen($filepath . '.gz', 'w9');
gzwrite($z_file, $file_data);
gzclose($z_file);
@chmod($filepath . '.gz', FILE_READ_MODE);
Minimee_helper::log('Gzipped file `' . $this->cache_filename . '.gz` was written to ' . $this->config->cache_path, 3);
}
// Do we need to clean up expired caches?
if ($this->config->is_yes('cleanup')) {
if ($handle = opendir($this->config->cache_path)) {
while (false !== ($file = readdir($handle))) {
if ($file == '.' || $file == '..' || $file === $this->cache_filename) {
continue;
}
// matches should be deleted
if (strpos($file, $this->cache_filename_hash) === 0) {
@unlink($this->config->cache_path . '/' . $file);
Minimee_helper::log('Cache file `' . $this->cache_filename . '` has expired. File deleted.', 3);
}
}
closedir($handle);
}
}
// free memory where possible
unset($filepath, $z_file, $success);
}
/**
* Sanitise an individual setting
*
* @param string Name of setting
* @param string potential value of setting
* @return string Sanitised setting
*/
public function sanitise_setting($setting, $value)
{
switch ($setting) {
/* Booleans default NO */
case 'cleanup':
case 'disable':
case 'minify_html':
case 'save_gz':
return ($value === TRUE or preg_match('/1|true|on|yes|y/i', $value)) ? 'yes' : 'no';
break;
/* Booleans default YES */
/* Booleans default YES */
case 'combine_css':
case 'combine_js':
case 'css_prepend_mode':
case 'minify_css':
case 'minify_js':
return ($value === FALSE or preg_match('/0|false|off|no|n/i', $value)) ? 'no' : 'yes';
break;
/* ENUM */
/* ENUM */
case 'hash_method':
return preg_match('/sha1|md5|sanitize|sanitise/i', $value) ? $value : 'sha1';
break;
case 'remote_mode':
return preg_match('/auto|curl|fgc/i', $value) ? $value : 'auto';
break;
case 'js_library':
return preg_match('/jsmin|jsminplus/i', $value) ? $value : 'jsmin';
break;
case 'css_library':
return preg_match('/cssmin|minify/i', $value) ? $value : 'minify';
break;
/* String - Paths */
/* String - Paths */
case 'cache_path':
case 'base_path':
return rtrim(Minimee_helper::remove_double_slashes($value), '/');
break;
/* String - URLs */
/* String - URLs */
case 'cache_url':
case 'base_url':
case 'css_prepend_url':
return rtrim(Minimee_helper::remove_double_slashes($value, TRUE), '/');
break;
/* Default */
/* Default */
default:
return $value;
break;
}
}
