* @ cache([cacheid],[duration=86400]). The id is optional. The duration of the cache is in seconds
* // content here
* @ endcache()
*
* It also adds a new function (optional) to the business or logic layer
*
* if ($blade->cacheExpired('hellocache',1,5)) { //'helloonecache' =template, =1 id cache, 5=duration (seconds)
* // cache expired, so we should do some stuff (such as read from the database)
* }
*
*
* @package BladeOneCache
* @version 1.4 2016-06-25
* @link https://github.com/EFTEC/BladeOne
* @author Jorge Patricio Castro Castillo
*/
trait BladeOneCache
{
protected $curCacheId = 0;
protected $curCacheDuration = "";
protected $curCachePosition = 0;
protected $cacheRunning = false;
private $cacheExpired = []; // avoids to compare the file different times.
public function compileCache($expression)
{
// get id of template
// if the file exists then
// compare date.
// if the date is too old then re-save.
// else
// save for the first time.
return $this->phpTag . "echo \$this->cacheStart{$expression}; if(!\$this->cacheRunning) { ?>";
}
public function compileEndCache($expression)
{
return $this->phpTag . "} // if cacheRunning\necho \$this->cacheEnd{$expression}; ?>";
}
/**
* Returns true if the cache expired (or doesn't exist), otherwise false.
*
* @param string $templateName name of the template to use (such hello for template hello.blade.php)
* @param string $id (id of cache, optional, if not id then it adds automatically a number)
* @param int $cacheDuration (duration of the cache in seconds)
* @return bool (return if the cache expired)
*/
public function cacheExpired($templateName, $id, $cacheDuration)
{
if ($this->getMode() & 1) {
return true; // forced mode, hence it always expires. (fast mode is ignored).
}
$compiledFile = $this->getCompiledFile($templateName) . '_cache' . $id;
if (isset($this->cacheExpired[$compiledFile])) {
// if the information is already in the array then returns it.
return $this->cacheExpired[$compiledFile];
}
$date = @\filemtime($compiledFile);
if ($date) {
if ($date + $cacheDuration < \time()) {
$this->cacheExpired[$compiledFile] = true;
return true; // time-out.
}
} else {
$this->cacheExpired[$compiledFile] = true;
return true; // no file
}
$this->cacheExpired[$compiledFile] = false;
return false; // cache active.
}
public function cacheStart($id = "", $cacheDuration = 86400)
{
$this->curCacheId = ($id == "") ? ($this->curCacheId + 1) : $id;
$this->curCacheDuration = $cacheDuration;
$this->curCachePosition = \strlen(\ob_get_contents());
$compiledFile = $this->getCompiledFile() . '_cache' . $this->curCacheId;
if ($this->cacheExpired('', $id, $cacheDuration)) {
$this->cacheRunning = false;
} else {
$this->cacheRunning = true;
$content = $this->getFile($compiledFile);
echo $content;
}
}
public function cacheEnd()
{
if (!$this->cacheRunning) {
$txt = \substr(\ob_get_contents(), $this->curCachePosition);
$compiledFile = $this->getCompiledFile() . '_cache' . $this->curCacheId;
\file_put_contents($compiledFile, $txt);
}
$this->cacheRunning = false;
}
}