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<?php |
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/* |
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* View Templating System |
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* Copyright (c) 2008-2015 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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use ntentan\honam\engines\AbstractEngine; |
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use ntentan\honam\exceptions\TemplateEngineNotFoundException; |
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use ntentan\honam\exceptions\TemplateResolutionException; |
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/** |
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* The TemplateEngine class does the work of resolving templates, loading template files, |
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* loading template engines and rendering templates. The `ntentan/views` package takes a reference to a |
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* template and tries to find a specific template file to be used for the rendering. |
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* `ntentan/views` does not expect to find all view templates in a single directory. |
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* It uses a heirachy of directories which it searches for the template to render. |
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* Templates in directories closer to the beginning of the array have a higher |
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* priority over those closer to the end of the array. |
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* |
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*/ |
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class TemplateRenderer |
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{ |
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/** |
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* An array of loaded template engine instances. |
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* @var array<AbstractEngine> |
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*/ |
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private $loadedInstances; |
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/** |
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* Instance of the engine registry for loading template engines. |
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* @var EngineRegistry |
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*/ |
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private $registry; |
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/** |
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* Instance of the template file resolver for finding template files. |
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* @var TemplateFileResolver |
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*/ |
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private $templateFileResolver; |
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private $tempDirectory; |
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/** |
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* TemplateRenderer constructor. |
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* |
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* @param EngineRegistry $registry |
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* @param TemplateFileResolver $templateFileResolver |
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*/ |
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public function __construct(EngineRegistry $registry, TemplateFileResolver $templateFileResolver) |
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{ |
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$this->registry = $registry; |
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$this->templateFileResolver = $templateFileResolver; |
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$this->tempDirectory = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "honam_temp"; |
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//$registry->setTemplateRenderer($this); |
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} |
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/** |
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* @param $templateFile |
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* @return string|null |
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* @throws TemplateEngineNotFoundException |
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*/ |
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private function getTemplateExtension($templateFile) |
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{ |
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$supportedExtensions = $this->registry->getSupportedExtensions(); |
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foreach($supportedExtensions as $extension) { |
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if($extension == substr($templateFile, -strlen($extension))) return $extension; |
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} |
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throw new TemplateEngineNotFoundException("There are currently no registered engines that can render $templateFile"); |
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} |
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/** |
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* Check if an engine exists that can render the given file. |
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* @param $templateFile |
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* @return bool |
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* @throws TemplateEngineNotFoundException |
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*/ |
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public function canRender($templateFile) |
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{ |
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try { |
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$this->getTemplateExtension($templateFile); |
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return true; |
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} catch(TemplateEngineNotFoundException $exception) { |
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return false; |
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} |
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} |
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/** |
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* Load and cache an instance of the a template engine. |
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* |
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* @param $extension |
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* @return mixed |
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* @throws exceptions\TemplateEngineNotFoundException |
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* @throws exceptions\FactoryException |
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*/ |
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private function loadEngine($extension) |
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{ |
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if(!isset($this->loadedInstances[$extension])) { |
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$this->loadedInstances[$extension] = $this->registry->getEngineInstance($extension); |
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} |
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return $this->loadedInstances[$extension]; |
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} |
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public function setTempDirectory(string $tempDirectory) |
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{ |
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$this->tempDirectory = $tempDirectory; |
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} |
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/** |
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* Renders a given template reference with associated template data. This render |
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* function combs through the template directory heirachy to find a template |
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* file which matches the given template reference and uses it for the purpose |
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* of rendering the view. |
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* |
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* @param string $template The template reference file. |
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* @param $data |
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* @param bool $fromString |
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* @param string $extension |
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* @return string |
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* @throws TemplateResolutionException |
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* @throws exceptions\TemplateEngineNotFoundException |
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* @throws exceptions\FactoryException |
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*/ |
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public function render($template, $data, $fromString = false, $extension=null) |
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{ |
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if($fromString) { |
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$engine = $this->loadEngine($extension); |
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return $engine->renderFromStringTemplate($template, $data); |
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} else { |
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$templateFile = $this->templateFileResolver->resolveTemplateFile($template); |
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$engine = $this->loadEngine($this->getTemplateExtension($templateFile)); |
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return $engine->renderFromFileTemplate($templateFile, $data); |
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} |
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} |
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} |
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ntentan /
honam
