xarxaprod-wp-theme/vendor/eftec/bladeone/lib/BladeOneCache.php

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2024-01-09 16:13:20 +01:00
<?php /** @noinspection TypeUnsafeComparisonInspection */
/** @noinspection PhpUnused */
/** @noinspection DuplicatedCode */
namespace eftec\bladeone;
use function fclose;
use function file_put_contents;
use function filemtime;
use function filesize;
use function fopen;
use function fwrite;
use function is_array;
use function is_object;
use function ob_get_contents;
use function print_r;
use function strlen;
use function substr;
use function time;
/**
* trait BladeOneCache
* Copyright (c) 2016 Jorge Patricio Castro Castillo MIT License. Don't delete this comment, its part of the license.
* Extends the tags of the class BladeOne. Its optional
* It adds the next tags to the template
* <code>
* @ cache([cacheid],[duration=86400]). The id is optional. The duration of the cache is in seconds
* // content here
* @ endcache()
* </code>
* It also adds a new function (optional) to the business or logic layer
* <code>
* 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)
* }
* </code>
*
* @package BladeOneCache
* @version 3.42 2020-04-25
* @link https://github.com/EFTEC/BladeOne
* @author Jorge Patricio Castro Castillo <jcastro arroba eftec dot cl>
*/
trait BladeOneCache
{
protected $curCacheId = 0;
protected $curCacheDuration = 0;
protected $curCachePosition = 0;
protected $cacheRunning = false;
protected $cachePageRunning = false;
protected $cacheLog;
/**
* @var array avoids to compare the file different times. It also avoids race conditions.
*/
private $cacheExpired = [];
/**
* @var string=['get','post','getpost','request',null][$i]
*/
private $cacheStrategy;
/** @var array|null */
private $cacheStrategyIndex;
/**
* @return null|string $cacheStrategy=['get','post','getpost','request',null][$i]
*/
public function getCacheStrategy()
{
return $this->cacheStrategy;
}
/**
* It sets the cache log. If not cache log then it does not generates a log file<br>
* The cache log stores each time a template is creates or expired.<br>
*
* @param string $file
*/
public function setCacheLog($file)
{
$this->cacheLog=$file;
}
public function writeCacheLog($txt, $nivel)
{
if (!$this->cacheLog) {
return; // if there is not a file assigned then it skips saving.
}
$fz = @filesize($this->cacheLog);
if (is_object($txt) || is_array($txt)) {
$txt = print_r($txt, true);
}
// Rewrite file if more than 100000 bytes
$mode=($fz > 100000) ? 'w':'a';
$fp = fopen($this->cacheLog, $mode);
if ($fp === false) {
return;
}
switch ($nivel) {
case 1:
$txtNivel='expired';
break;
case 2:
$txtNivel='new';
break;
default:
$txtNivel='other';
}
$txtarg=json_encode($this->cacheUniqueGUID(false));
fwrite($fp, date('c') . "\t$txt\t$txtNivel\t$txtarg\n");
fclose($fp);
}
/**
* It sets the strategy of the cache page.
*
* @param null|string $cacheStrategy =['get','post','getpost','request',null][$i]
* @param array|null $index if null then it reads all indexes. If not, it reads a indexes.
*/
public function setCacheStrategy($cacheStrategy, $index = null)
{
$this->cacheStrategy = $cacheStrategy;
$this->cacheStrategyIndex = $index;
}
/**
* It obtains an unique GUID based in:<br>
* <b>get</b>= parameters from the url<br>
* <b>post</b>= parameters sends via post<br>
* <b>getpost</b> = a mix between get and post<br>
* <b>request</b> = get, post and cookies (including sessions)<br>
* MD5 could generate colisions (2^64 = 18,446,744,073,709,551,616) but the end hash is the sum of the hash of
* the page + this GUID.
*
* @param bool $serialize if true then it serializes using md5
* @return string
*/
private function cacheUniqueGUID($serialize = true)
{
switch ($this->cacheStrategy) {
case 'get':
$r = $_GET;
break;
case 'post':
$r = $_POST;
break;
case 'getpost':
$arr = array_merge($_GET, $_POST);
$r = $arr;
break;
case 'request':
$r = $_REQUEST;
break;
default:
$r = null;
}
if ($this->cacheStrategyIndex === null || !is_array($r)) {
$r= serialize($r);
} else {
$copy=[];
foreach ($r as $key => $item) {
if (in_array($key, $this->cacheStrategyIndex, true)) {
$copy[$key]=$item;
}
}
$r=serialize($copy);
}
return $serialize===true ? md5($r): $r;
}
public function compileCache($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}; ?>";
}
/**
* It get the filename of the compiled file (cached). If cache is not enabled, then it
* returns the regular file.
*
* @param string $view
* @return string The full filename
*/
private function getCompiledFileCache($view)
{
$id = $this->cacheUniqueGUID();
if ($id !== null) {
return str_replace($this->compileExtension, '_cache' . $id
. $this->compileExtension, $this->getCompiledFile($view));
}
return $this->getCompiledFile($view);
}
/**
* run the blade engine. It returns the result of the code.
*
* @param string $view The name of the cache. Ex: "folder.folder.view" ("/folder/folder/view.blade")
* @param array $variables An associative arrays with the values to display.
* @param int $ttl time to live (in second).
* @return string
*/
public function runCache($view, $variables = [], $ttl = 86400)
{
$this->cachePageRunning = true;
$cacheStatus=$this->cachePageExpired($view, $ttl);
if ($cacheStatus!==0) {
$this->writeCacheLog($view, $cacheStatus);
$this->cacheStart('_page_', $ttl);
$content = $this->run($view, $variables); // if no cache, then it runs normally.
$this->fileName = $view; // sometimes the filename is replaced (@include), so we restore it
$this->cacheEnd($content); // and it stores as a cache paged.
} else {
$content = $this->getFile($this->getCompiledFileCache($view));
}
$this->cachePageRunning = false;
return $content;
}
/**
* Returns true if the block 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 $cacheDuration (duration of the cache in seconds)
* @return int 0=cache exists, 1= cache expired, 2=not exists, string= the cache file (if any)
*/
public function cacheExpired($templateName, $id, $cacheDuration)
{
if ($this->getMode() & 1) {
return 2; // forced mode, hence it always expires. (fast mode is ignored).
}
$compiledFile = $this->getCompiledFile($templateName) . '_cache' . $id;
return $this->cacheExpiredInt($compiledFile, $cacheDuration);
}
/**
* It returns true if the whole page expired.
*
* @param string $templateName
* @param int $cacheDuration is seconds.
* @return int 0=cache exists, 1= cache expired, 2=not exists, string= the cache content (if any)
*/
public function cachePageExpired($templateName, $cacheDuration)
{
if ($this->getMode() & 1) {
return 2; // forced mode, hence it always expires. (fast mode is ignored).
}
$compiledFile = $this->getCompiledFileCache($templateName);
return $this->CacheExpiredInt($compiledFile, $cacheDuration);
}
/**
* This method is used by cacheExpired() and cachePageExpired()
*
* @param string $compiledFile
* @param int $cacheDuration is seconds.
* @return int|mixed 0=cache exists, 1= cache expired, 2=not exists, string= the cache content (if any)
*/
private function cacheExpiredInt($compiledFile, $cacheDuration)
{
if (isset($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] = 1;
return 2; // time-out.
}
} else {
$this->cacheExpired[$compiledFile] = 2;
return 1; // no file
}
$this->cacheExpired[$compiledFile] = 0;
return 0; // cache active.
}
public function cacheStart($id = '', $cacheDuration = 86400)
{
$this->curCacheId = ($id == '') ? ($this->curCacheId + 1) : $id;
$this->curCacheDuration = $cacheDuration;
$this->curCachePosition = strlen(ob_get_contents());
if ($this->cachePageRunning) {
$compiledFile = $this->getCompiledFileCache($this->fileName);
} else {
$compiledFile = $this->getCompiledFile() . '_cache' . $this->curCacheId;
}
if ($this->cacheExpired('', $id, $cacheDuration) !==0) {
$this->cacheRunning = false;
} else {
$this->cacheRunning = true;
$content = $this->getFile($compiledFile);
echo $content;
}
}
public function cacheEnd($txt = null)
{
if (!$this->cacheRunning) {
$txt = ($txt !== null) ? $txt : substr(ob_get_contents(), $this->curCachePosition);
if ($this->cachePageRunning) {
$compiledFile = $this->getCompiledFileCache($this->fileName);
} else {
$compiledFile = $this->getCompiledFile() . '_cache' . $this->curCacheId;
}
file_put_contents($compiledFile, $txt);
}
$this->cacheRunning = false;
}
}