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<?php |
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/* |
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* Ntentan Framework |
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* Copyright (c) 2010-2015 James Ekow Abaka Ainooson |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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*/ |
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namespace ntentan\honam; |
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/** |
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* A class for loading the helpers in views. |
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*/ |
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class HelpersLoader |
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{ |
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private $pluginMode = false; |
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private $plugin; |
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private $loadedHelpers = array(); |
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/** |
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* Get the instance of a helper given the string name of the helper. |
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* |
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* @param string $helper |
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* @return boolean|\ntentan\honam\Helper |
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*/ |
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private function getHelper($helper) |
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{ |
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if(!isset($this->loadedHelpers[$this->plugin . $helper])) |
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{ |
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$camelizedHelper = ucfirst($helper) . "Helper"; |
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if($this->pluginMode) |
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{ |
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$helperClass = "\\ntentan\\extensions\\{$this->plugin}\\helpers\\$camelizedHelper"; |
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$this->pluginMode = false; |
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} |
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else if(file_exists(__DIR__ . "/helpers/$camelizedHelper.php")) |
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{ |
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$helperClass = "\\ntentan\\honam\\helpers\\$camelizedHelper"; |
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} |
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else |
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{ |
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return false; |
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} |
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$helperInstance = new $helperClass(); |
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$this->loadedHelpers[$this->plugin . $helper] = $helperInstance; |
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} |
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return $this->loadedHelpers[$this->plugin . $helper]; |
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} |
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public function __get($helper) |
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{ |
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$helperInstance = $this->getHelper($helper); |
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if($helperInstance === false) |
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{ |
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if($this->pluginMode === false) |
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{ |
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$this->pluginMode = true; |
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$this->plugin = $helper; |
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$helperInstance = $this; |
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} |
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} |
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return $helperInstance; |
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} |
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public function __call($helperName, $arguments) |
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{ |
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$helper = $this->getHelper($helperName); |
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if($helper === false) |
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{ |
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throw new \ntentan\honam\exceptions\HelperException("Cannot load helper with [$helperName]"); |
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} |
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else |
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{ |
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$method = new \ReflectionMethod($helper, 'help'); |
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$this->plugin = null; |
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$this->pluginMode = false; |
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} |
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return $method->invokeArgs($helper, $arguments); |
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} |
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} |
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