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<?php
/**
* Smarty Resource Plugin
*
* @package Smarty
* @subpackage TemplateResources
* @author Rodney Rehm
*/
/**
* Smarty Resource Plugin
* Wrapper Implementation for custom resource plugins
*
* @package Smarty
* @subpackage TemplateResources
*/
abstract class Smarty_Resource_Custom extends Smarty_Resource
{
/**
* fetch template and its modification time from data source
*
* @param string $name template name
* @param string &$source template source
* @param integer &$mtime template modification timestamp (epoch)
*/
abstract protected function fetch($name, &$source, &$mtime);
/**
* Fetch template's modification timestamp from data source
* {@internal implementing this method is optional.
* Only implement it if modification times can be accessed faster than loading the complete template source.}}
*
* @param string $name template name
*
* @return integer|boolean timestamp (epoch) the template was modified, or false if not found
*/
protected function fetchTimestamp($name)
{
return null;
}
/**
* populate Source Object with meta data from Resource
*
* @param Smarty_Template_Source $source source object
* @param Smarty_Internal_Template $_template template object
*/
public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null)
{
$source->filepath = $source->type . ':' . $this->generateSafeName($source->name);
$source->uid = sha1($source->type . ':' . $source->name);
$mtime = $this->fetchTimestamp($source->name);
if ($mtime !== null) {
$source->timestamp = $mtime;
} else {
$this->fetch($source->name, $content, $timestamp);
$source->timestamp = isset($timestamp) ? $timestamp : false;
if (isset($content)) {
$source->content = $content;
}
}
$source->exists = !!$source->timestamp;
}
/**
* Load template's source into current template object
*
* @param Smarty_Template_Source $source source object
*
* @return string template source
* @throws SmartyException if source cannot be loaded
*/
public function getContent(Smarty_Template_Source $source)
{
$this->fetch($source->name, $content, $timestamp);
if (isset($content)) {
return $content;
}
throw new SmartyException("Unable to read template {$source->type} '{$source->name}'");
}
/**
* Determine basename for compiled filename
*
* @param Smarty_Template_Source $source source object
*
* @return string resource's basename
*/
public function getBasename(Smarty_Template_Source $source)
{
return basename($this->generateSafeName($source->name));
}
/**
* Removes special characters from $name and limits its length to 127 characters.
*
* @param $name
*
* @return string
*/
private function generateSafeName($name): string {
return substr(preg_replace('/[^A-Za-z0-9._]/', '', (string) $name), 0, 127);
}
}