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@@ -1,10 +1,108 @@
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<?php
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-/**
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-* All bridge logic
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-* Note : adapter are store in other place
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-*/
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+class Bridge {
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+
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+ static protected $dirBridge;
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+
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+ public function __construct(){
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+ throw new \LogicException('Please use ' . __CLASS__ . '::create for new object.');
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+ }
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+
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+ /**
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+ * Checks if a bridge is an instantiable bridge.
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+ * @param string $nameBridge name of the bridge that you want to use
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+ * @return true if it is an instantiable bridge, false otherwise.
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+ */
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+ static public function isInstantiable($nameBridge){
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+ $re = new ReflectionClass($nameBridge);
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+ return $re->IsInstantiable();
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+ }
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+
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+ /**
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+ * Create a new bridge object
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+ * @param string $nameBridge Defined bridge name you want use
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+ * @return Bridge object dedicated
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+ */
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+ static public function create($nameBridge){
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+ if(!preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameBridge)){
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+ $message = <<<EOD
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+'nameBridge' must start with one uppercase character followed or not by
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+alphanumeric or dash characters!
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+EOD;
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+ throw new \InvalidArgumentException($message);
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+ }
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+
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+ $nameBridge = $nameBridge . 'Bridge';
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+ $pathBridge = self::getDir() . $nameBridge . '.php';
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+
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+ if(!file_exists($pathBridge)){
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+ throw new \Exception('The bridge you looking for does not exist. It should be at path ' . $pathBridge);
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+ }
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+
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+ require_once $pathBridge;
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+
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+ if(Bridge::isInstantiable($nameBridge)){
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+ return new $nameBridge();
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+ } else {
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+ return false;
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+ }
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+ }
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+
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+ static public function setDir($dirBridge){
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+ if(!is_string($dirBridge)){
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+ throw new \InvalidArgumentException('Dir bridge must be a string.');
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+ }
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+
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+ if(!file_exists($dirBridge)){
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+ throw new \Exception('Dir bridge does not exist.');
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+ }
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+
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+ self::$dirBridge = $dirBridge;
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+ }
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-interface BridgeInterface{
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+ static public function getDir(){
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+ $dirBridge = self::$dirBridge;
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+
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+ if(is_null($dirBridge)){
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+ throw new \LogicException(__CLASS__ . ' class need to know bridge path !');
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+ }
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+
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+ return $dirBridge;
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+ }
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+
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+ /**
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+ * Lists the available bridges.
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+ * @return array List of the bridges
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+ */
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+ static public function listBridges(){
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+ $pathDirBridge = self::getDir();
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+ $listBridge = array();
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+ $dirFiles = scandir($pathDirBridge);
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+
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+ if($dirFiles !== false){
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+ foreach($dirFiles as $fileName){
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+ if(preg_match('@^([^.]+)Bridge\.php$@U', $fileName, $out)){
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+ $listBridge[] = $out[1];
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+ }
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+ }
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+ }
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+
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+ return $listBridge;
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+ }
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+
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+ static public function isWhitelisted($whitelist, $name){
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+ if(in_array($name, $whitelist)
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+ or in_array($name . '.php', $whitelist)
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+ or in_array($name . 'Bridge', $whitelist) // DEPRECATED
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+ or in_array($name . 'Bridge.php', $whitelist) // DEPRECATED
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+ or count($whitelist) === 1 and trim($whitelist[0]) === '*'){
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+ return true;
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+ } else {
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+ return false;
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+ }
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+ }
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+}
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+
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+interface BridgeInterface {
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public function collectData(array $param);
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public function getCacheDuration();
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public function loadMetadatas();
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@@ -12,21 +110,18 @@ interface BridgeInterface{
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public function getURI();
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}
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-abstract class BridgeAbstract implements BridgeInterface{
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+abstract class BridgeAbstract implements BridgeInterface {
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protected $cache;
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protected $items = array();
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- public $name = "Unnamed bridge";
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- public $uri = "";
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- public $description = 'No description provided';
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- public $maintainer = 'No maintainer';
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- public $useProxy = true;
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- public $parameters = array();
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+ public $name = 'Unnamed bridge';
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+ public $uri = '';
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+ public $description = 'No description provided';
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+ public $maintainer = 'No maintainer';
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+ public $useProxy = true;
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+ public $parameters = array();
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- /**
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- * Launch probative exception
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- */
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protected function returnError($message, $code){
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throw new \HttpException($message, $code);
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}
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@@ -40,340 +135,254 @@ abstract class BridgeAbstract implements BridgeInterface{
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}
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/**
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- * Return datas stored in the bridge
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+ * Return items stored in the bridge
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* @return mixed
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*/
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public function getDatas(){
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return $this->items;
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}
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-
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-
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/**
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* Defined datas with parameters depending choose bridge
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- * Note : you can define a cache before with "setCache"
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- * @param array $param $_REQUEST, $_GET, $_POST, or array with bridge expected paramters
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+ * Note : you can define a cache with "setCache"
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+ * @param array $param $_REQUEST, $_GET, $_POST, or array with expected
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+ * bridge paramters
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*/
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public function setDatas(array $param){
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- if( !is_null($this->cache) ){
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+ if(!is_null($this->cache)){
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$this->cache->prepare($param);
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$time = $this->cache->getTime();
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- }
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- else{
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- $time = false; // No cache ? No time !
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+ } else {
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+ $time = false;
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}
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- if( $time !== false && ( time() - $this->getCacheDuration() < $time ) ){ // Cache file has not expired. Serve it.
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+ if($time !== false && (time() - $this->getCacheDuration() < $time)){
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$this->items = $this->cache->loadData();
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- }
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- else{
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+ } else {
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$this->collectData($param);
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- if( !is_null($this->cache) ){ // Cache defined ? We go to refresh is memory :D
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+ if(!is_null($this->cache)){
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$this->cache->saveData($this->getDatas());
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}
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}
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}
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- /**
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- * Define default bridge name
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- */
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public function getName(){
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return $this->name;
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}
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- /**
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- * Define default bridge URI
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- */
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public function getURI(){
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return $this->uri;
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}
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- /**
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- * Define default duraction for cache
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- */
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public function getCacheDuration(){
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return 3600;
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}
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- /**
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- * Defined cache object to use
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- */
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public function setCache(\CacheAbstract $cache){
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$this->cache = $cache;
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-
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- return $this;
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}
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- public function message($text) {
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- if(!file_exists('DEBUG')){
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- return;
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- }
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- $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
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- $calling = $backtrace[2];
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- $message = $calling["file"].":".$calling["line"]
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- ." class ".get_class($this)."->".$calling["function"]
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- ." - ".$text;
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- error_log($message);
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- }
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+ public function debugMessage($text){
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+ if(!file_exists('DEBUG')) {
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+ return;
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+ }
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- protected function getContents($url,$use_include_path=false,$context=null,$offset=0,$maxlen=null){
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- $contextOptions = array(
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- 'http' => array(
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- 'user_agent'=>ini_get('user_agent')
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- ),
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- );
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+ $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
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+ $calling = $backtrace[2];
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+ $message = $calling['file'] . ':'
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+ . $calling['line'] . ' class '
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+ . get_class($this) . '->'
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+ . $calling['function'] . ' - '
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+ . $text;
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+
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+ error_log($message);
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+ }
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- if(defined('PROXY_URL') && $this->useProxy) {
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- $contextOptions['http']['proxy'] = PROXY_URL;
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- $contextOptions['http']['request_fulluri'] = true;
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+ protected function getContents($url
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+ , $use_include_path = false
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+ , $context = null
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+ , $offset = 0
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+ , $maxlen = null){
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+ $contextOptions = array(
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+ 'http' => array(
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+ 'user_agent' => ini_get('user_agent')
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+ ),
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+ );
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+
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+ if(defined('PROXY_URL') && $this->useProxy){
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+ $contextOptions['http']['proxy'] = PROXY_URL;
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+ $contextOptions['http']['request_fulluri'] = true;
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+
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+ if(is_null($context)){
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+ $context = stream_context_create($contextOptions);
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+ } else {
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+ $prevContext=$context;
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+ if(!stream_context_set_option($context, $contextOptions)){
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+ $context = $prevContext;
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+ }
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+ }
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+ }
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- if(is_null($context)){
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- $context = stream_context_create($contextOptions);
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+ if(is_null($maxlen)){
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+ $content = @file_get_contents($url, $use_include_path, $context, $offset);
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} else {
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- $prevContext=$context;
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- if(!stream_context_set_option($context,$contextOptions)){
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- $context=$prevContext;
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- };
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+ $content = @file_get_contents($url, $use_include_path, $context, $offset, $maxlen);
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}
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- }
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-
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- if(is_null($maxlen)){
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- $content=@file_get_contents($url, $use_include_path, $context, $offset);
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- }else{
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- $content=@file_get_contents($url, $use_include_path, $context, $offset,$maxlen);
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- }
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-
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- if($content===false){
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- $this->message('Cant\'t download '.$url );
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- }
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- return $content;
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- }
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- protected function getSimpleHTMLDOM($url, $use_include_path = false, $context=null, $offset = 0, $maxLen=null, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT){
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- $content=$this->getContents($url,$use_include_path,$context,$offset,$maxLen);
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- return str_get_html($content,$lowercase,$forceTagsClosed,$target_charset,$stripRN,$defaultBRText,$defaultSpanText);
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+ if($content === false)
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+ $this->debugMessage('Cant\'t download ' . $url);
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+
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+ return $content;
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}
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+ protected function getSimpleHTMLDOM($url
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+ , $use_include_path = false
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+ , $context = null
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+ , $offset = 0
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+ , $maxLen = null
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+ , $lowercase = true
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+ , $forceTagsClosed = true
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+ , $target_charset = DEFAULT_TARGET_CHARSET
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+ , $stripRN = true
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+ , $defaultBRText = DEFAULT_BR_TEXT
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+ , $defaultSpanText = DEFAULT_SPAN_TEXT){
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+ $content = $this->getContents($url, $use_include_path, $context, $offset, $maxLen);
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+ return str_get_html($content
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+ , $lowercase
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+ , $forceTagsClosed
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+ , $target_charset
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+ , $stripRN
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+ , $defaultBRText
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+ , $defaultSpanText);
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+ }
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}
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/**
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- * Extension of BridgeAbstract allowing caching of files downloaded over http files.
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- * This is specially useful for sites from Gawker or Liberation networks, which allow pages excerpts top be viewed together on index, while full pages have to be downloaded
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- * separately.
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- * This class mainly provides a get_cached method which will will download the file from its remote location.
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- * TODO allow file cache invalidation by touching files on access, and removing files/directories which have not been touched since ... a long time
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- * After all, rss-bridge is not respaw, isn't it ?
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+ * Extension of BridgeAbstract allowing caching of files downloaded over http.
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+ * TODO allow file cache invalidation by touching files on access, and removing
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+ * files/directories which have not been touched since ... a long time
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*/
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abstract class HttpCachingBridgeAbstract extends BridgeAbstract {
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/**
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- * Maintain locally cached versions of pages to download to avoid multiple doiwnloads.
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- * A file name is generated by replacing all "/" by "_", and the file is saved below this bridge cache
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+ * Maintain locally cached versions of pages to download, to avoid multiple downloads.
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* @param url url to cache
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- * @return content of file as string
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+ * @return content of the file as string
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*/
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- public function get_cached($url) {
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- $simplified_url = str_replace(["http://", "https://", "?", "&", "="], ["", "", "/", "/", "/"], $url);
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- // TODO build this from the variable given to Cache
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- $pageCacheDir = __DIR__ . '/../cache/'."pages/";
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- $filename = $pageCacheDir.$simplified_url;
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- if (substr($filename, -1) == '/') {
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- $filename = $filename."index.html";
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- }
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- if(file_exists($filename)) {
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-// $this->message("loading cached file from ".$filename." for page at url ".$url);
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- // TODO touch file and its parent, and try to do neighbour deletion
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- $this->refresh_in_cache($pageCacheDir, $filename);
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- $content=file_get_contents($filename);
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- } else {
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-// $this->message("we have no local copy of ".$url." Downloading to ".$filename);
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- $dir = substr($filename, 0, strrpos($filename, '/'));
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- if(!is_dir($dir)) {
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-// $this->message("creating directories for ".$dir);
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+ public function get_cached($url){
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+ // TODO build this from the variable given to Cache
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+ $cacheDir = __DIR__ . '/../cache/pages/';
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+ $filepath = $this->buildCacheFilePath($url, $cacheDir);
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+
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+ if(file_exists($filepath)){
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+ $this->debugMessage('loading cached file from ' . $filepath . ' for page at url ' . $url);
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+ // TODO touch file and its parent, and try to do neighbour deletion
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+ $this->refresh_in_cache($cacheDir, $filepath);
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+ $content = file_get_contents($filepath);
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+ } else {
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+ $this->debugMessage('we have no local copy of ' . $url . ' Downloading to ' . $filepath);
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+ $dir = substr($filepath, 0, strrpos($filepath, '/'));
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+
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+ if(!is_dir($dir)){
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+ $this->debugMessage('creating directories for ' . $dir);
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mkdir($dir, 0777, true);
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}
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- $content=$this->getContents($url);
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- if($content!==false){
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- file_put_contents($filename,$content);
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+
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+ $content = $this->getContents($url);
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+ if($content !== false){
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+ file_put_contents($filepath, $content);
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}
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}
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+
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return $content;
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}
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- public function get_cached_time($url) {
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- $simplified_url = str_replace(["http://", "https://", "?", "&", "="], ["", "", "/", "/", "/"], $url);
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+ public function get_cached_time($url){
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// TODO build this from the variable given to Cache
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- $pageCacheDir = __DIR__ . '/../cache/'."pages/";
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- $filename = $pageCacheDir.$simplified_url;
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- if (substr($filename, -1) == '/') {
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- $filename = $filename."index.html";
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- }
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- if(!file_exists($filename)) {
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+ $cacheDir = __DIR__ . '/../cache/pages/';
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+ $filepath = $this->buildCacheFilePath($url, $cacheDir);
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|
+
|
|
|
+ if(!file_exists($filepath)){
|
|
|
$this->get_cached($url);
|
|
|
}
|
|
|
- return filectime($filename);
|
|
|
- }
|
|
|
|
|
|
- private function refresh_in_cache($pageCacheDir, $filename) {
|
|
|
- $currentPath = $filename;
|
|
|
- while(!$pageCacheDir==$currentPath) {
|
|
|
- touch($currentPath);
|
|
|
- $currentPath = dirname($currentPath);
|
|
|
- }
|
|
|
+ return filectime($filepath);
|
|
|
}
|
|
|
|
|
|
- public function remove_from_cache($url) {
|
|
|
- $simplified_url = str_replace(["http://", "https://", "?", "&", "="], ["", "", "/", "/", "/"], $url);
|
|
|
- // TODO build this from the variable given to Cache
|
|
|
- $pageCacheDir = __DIR__ . '/../cache/'."pages/";
|
|
|
- $filename = realpath($pageCacheDir.$simplified_url);
|
|
|
- $this->message("removing from cache \"".$filename."\" WELL, NOT REALLY");
|
|
|
- // filename is NO GOOD
|
|
|
-// unlink($filename);
|
|
|
- }
|
|
|
-
|
|
|
-}
|
|
|
-
|
|
|
-class Bridge{
|
|
|
-
|
|
|
- static protected $dirBridge;
|
|
|
-
|
|
|
- public function __construct(){
|
|
|
- throw new \LogicException('Please use ' . __CLASS__ . '::create for new object.');
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Checks if a bridge is an instantiable bridge.
|
|
|
- * @param string $nameBridge name of the bridge that you want to use
|
|
|
- * @return true if it is an instantiable bridge, false otherwise.
|
|
|
- */
|
|
|
- static public function isInstantiable($nameBridge) {
|
|
|
-
|
|
|
- $re = new ReflectionClass($nameBridge);
|
|
|
- return $re->IsInstantiable();
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- /**
|
|
|
- * Create a new bridge object
|
|
|
- * @param string $nameBridge Defined bridge name you want use
|
|
|
- * @return Bridge object dedicated
|
|
|
- */
|
|
|
- static public function create($nameBridge){
|
|
|
- if( !preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameBridge)){
|
|
|
- throw new \InvalidArgumentException('Name bridge must be at least one uppercase follow or not by alphanumeric or dash characters.');
|
|
|
- }
|
|
|
-
|
|
|
- $nameBridge=$nameBridge.'Bridge';
|
|
|
- $pathBridge = self::getDir() . $nameBridge . '.php';
|
|
|
-
|
|
|
- if( !file_exists($pathBridge) ){
|
|
|
- throw new \Exception('The bridge you looking for does not exist. It should be at path '.$pathBridge);
|
|
|
- }
|
|
|
-
|
|
|
- require_once $pathBridge;
|
|
|
-
|
|
|
- if(Bridge::isInstantiable($nameBridge)) {
|
|
|
- return new $nameBridge();
|
|
|
- } else {
|
|
|
- return FALSE;
|
|
|
+ private function refresh_in_cache($cacheDir, $filepath){
|
|
|
+ $currentPath = $filepath;
|
|
|
+ while(!$cacheDir == $currentPath){
|
|
|
+ touch($currentPath);
|
|
|
+ $currentPath = dirname($currentPath);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
- static public function setDir($dirBridge){
|
|
|
- if( !is_string($dirBridge) ){
|
|
|
- throw new \InvalidArgumentException('Dir bridge must be a string.');
|
|
|
- }
|
|
|
+ private function buildCacheFilePath($url, $cacheDir){
|
|
|
+ $simplified_url = str_replace(
|
|
|
+ ['http://', 'https://', '?', '&', '='],
|
|
|
+ ['', '', '/', '/', '/'],
|
|
|
+ $url);
|
|
|
|
|
|
- if( !file_exists($dirBridge) ){
|
|
|
- throw new \Exception('Dir bridge does not exist.');
|
|
|
+ if(substr($cacheDir, -1) !== '/'){
|
|
|
+ $cacheDir .= '/';
|
|
|
}
|
|
|
|
|
|
- self::$dirBridge = $dirBridge;
|
|
|
- }
|
|
|
-
|
|
|
- static public function getDir(){
|
|
|
- $dirBridge = self::$dirBridge;
|
|
|
+ $filepath = $cacheDir . $simplified_url;
|
|
|
|
|
|
- if( is_null($dirBridge) ){
|
|
|
- throw new \LogicException(__CLASS__ . ' class need to know bridge path !');
|
|
|
+ if(substr($filepath, -1) === '/'){
|
|
|
+ $filepath .= 'index.html';
|
|
|
}
|
|
|
|
|
|
- return $dirBridge;
|
|
|
+ return $filepath;
|
|
|
}
|
|
|
|
|
|
- /**
|
|
|
- * Lists the available bridges.
|
|
|
- * @return array List of the bridges
|
|
|
- */
|
|
|
- static public function listBridges() {
|
|
|
-
|
|
|
- $pathDirBridge = self::getDir();
|
|
|
- $listBridge = array();
|
|
|
- $dirFiles = scandir($pathDirBridge);
|
|
|
-
|
|
|
- if( $dirFiles !== false ){
|
|
|
- foreach( $dirFiles as $fileName ) {
|
|
|
- if( preg_match('@^([^.]+)Bridge\.php$@U', $fileName, $out) ){
|
|
|
- $listBridge[] = $out[1];
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return $listBridge;
|
|
|
- }
|
|
|
- static function isWhitelisted( $whitelist, $name ) {
|
|
|
- if(in_array($name, $whitelist) or in_array($name.'.php', $whitelist) or
|
|
|
- // DEPRECATED: the nameBridge notation will be removed in future releases
|
|
|
- in_array($name.'Bridge', $whitelist) or in_array($name.'Bridge.php', $whitelist) or
|
|
|
- count($whitelist) === 1 and trim($whitelist[0]) === '*')
|
|
|
- return TRUE;
|
|
|
- else
|
|
|
- return FALSE;
|
|
|
- }
|
|
|
-
|
|
|
+ public function remove_from_cache($url){
|
|
|
+ // TODO build this from the variable given to Cache
|
|
|
+ $cacheDir = __DIR__ . '/../cache/pages/';
|
|
|
+ $filepath = $this->buildCacheFilePath($url, $cacheDir);
|
|
|
+ $this->debugMessage('removing from cache \'' . $filepath . '\' WELL, NOT REALLY');
|
|
|
+ // unlink($filepath);
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
-abstract class RssExpander extends HttpCachingBridgeAbstract{
|
|
|
-
|
|
|
- public $name;
|
|
|
- public $uri;
|
|
|
- public $description;
|
|
|
+abstract class RssExpander extends HttpCachingBridgeAbstract {
|
|
|
|
|
|
public function collectExpandableDatas(array $param, $name){
|
|
|
- if (empty($name)) {
|
|
|
+ if(empty($name)){
|
|
|
$this->returnServerError('There is no $name for this RSS expander');
|
|
|
}
|
|
|
-// $this->message("Loading from ".$param['url']);
|
|
|
- // Notice WE DO NOT use cache here on purpose : we want a fresh view of the RSS stream each time
|
|
|
- $content=$this->getContents($name) or
|
|
|
- $this->returnServerError('Could not request '.$name);
|
|
|
+
|
|
|
+ $this->debugMessage('Loading from ' . $param['url']);
|
|
|
+
|
|
|
+ /* Notice we do not use cache here on purpose:
|
|
|
+ * we want a fresh view of the RSS stream each time
|
|
|
+ */
|
|
|
+ $content = $this->getContents($name) or $this->returnServerError('Could not request ' . $name);
|
|
|
|
|
|
$rssContent = simplexml_load_string($content);
|
|
|
- // $this->message("loaded RSS from ".$param['url']);
|
|
|
+ $this->debugMessage('loaded RSS from ' . $param['url']);
|
|
|
// TODO insert RSS format detection
|
|
|
- // we suppose for now, we have some RSS 2.0
|
|
|
+ // For now we always assume RSS 2.0
|
|
|
$this->collect_RSS_2_0_data($rssContent);
|
|
|
}
|
|
|
|
|
|
- protected function collect_RSS_2_0_data($rssContent) {
|
|
|
+ protected function collect_RSS_2_0_data($rssContent){
|
|
|
$rssContent = $rssContent->channel[0];
|
|
|
-// $this->message("RSS content is ===========\n".var_export($rssContent, true)."===========");
|
|
|
+ $this->debugMessage('RSS content is ===========\n' . var_export($rssContent, true) . '===========');
|
|
|
$this->load_RSS_2_0_feed_data($rssContent);
|
|
|
- foreach($rssContent->item as $item) {
|
|
|
-// $this->message("parsing item ".var_export($item, true));
|
|
|
+ foreach($rssContent->item as $item){
|
|
|
+ $this->debugMessage('parsing item ' . var_export($item, true));
|
|
|
$this->items[] = $this->parseRSSItem($item);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
- protected function RSS_2_0_time_to_timestamp($item) {
|
|
|
+ protected function RSS_2_0_time_to_timestamp($item){
|
|
|
return DateTime::createFromFormat('D, d M Y H:i:s e', $item->pubDate)->getTimestamp();
|
|
|
}
|
|
|
|
|
|
// TODO set title, link, description, language, and so on
|
|
|
- protected function load_RSS_2_0_feed_data($rssContent) {
|
|
|
+ protected function load_RSS_2_0_feed_data($rssContent){
|
|
|
$this->name = trim($rssContent->title);
|
|
|
$this->uri = trim($rssContent->link);
|
|
|
$this->description = trim($rssContent->description);
|
|
|
@@ -386,9 +395,7 @@ abstract class RssExpander extends HttpCachingBridgeAbstract{
|
|
|
*/
|
|
|
abstract protected function parseRSSItem($item);
|
|
|
|
|
|
- public function getDescription() {
|
|
|
+ public function getDescription(){
|
|
|
return $this->description;
|
|
|
}
|
|
|
}
|
|
|
-
|
|
|
-
|
logmanoriginal