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<?php namespace Tarsana\Command\Template; |
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use Tarsana\Command\Interfaces\Template\TemplateInterface; |
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use Tarsana\Command\Interfaces\Template\TemplateLoaderInterface; |
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use Tarsana\Command\Template\Twig\TwigLoader; |
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use Tarsana\IO\Filesystem; |
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/** |
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* This is the all-in-one template loader, it can decide |
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* which template loader implementation to call based on |
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* the file extension. |
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*/ |
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class TemplateLoader implements TemplateLoaderInterface { |
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/** |
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* Template loader providers classes. |
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* |
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* @var array |
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*/ |
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protected static $providers = [ |
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'twig' => TwigLoader::class |
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]; |
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/** |
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* Filesystem of the templates. |
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* |
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* @var Tarsana\IO\Interfaces\Filesystem |
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*/ |
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protected $fs; |
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/** |
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* Array of template loaders. |
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* |
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* @var array |
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*/ |
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protected $loaders; |
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public function __construct(string $templatesPath, string $cachePath = null) |
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{ |
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$this->init($templatesPath, $cachePath); |
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} |
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/** |
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* Initialize the loader. |
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* |
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* @param string $templatesPath |
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* @param string $cachePath |
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* @return self |
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*/ |
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public function init(string $templatesPath, string $cachePath = null) : TemplateLoaderInterface |
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{ |
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$this->fs = new Filesystem($templatesPath); |
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$this->loaders = []; |
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foreach (self::$providers as $ext => $provider) { |
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$this->loaders[$ext] = new $provider(); |
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$this->loaders[$ext]->init($templatesPath, $cachePath); |
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} |
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return $this; |
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} |
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/** |
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* Load a template by name. The name is the relative |
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* path of the template file from the templates folder |
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* The name is given without extension; Exceptions are |
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* thrown if no file with supported extension is found |
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* or if many exists. |
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* |
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* @param string $name |
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* @return Tarsana\Command\Interfaces\TemplateInterface |
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* @throws Tarsana\Command\Exceptions\TemplateNotFound |
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* @throws Tarsana\Command\Exceptions\TemplateNameConflict |
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*/ |
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public function load (string $name) : TemplateInterface |
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{ |
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$supportedExtensions = array_keys(self::$providers); |
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$fsPathLength = strlen($this->fs->path()); |
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$files = $this->fs |
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->find("{$name}.*") |
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->files() |
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->asArray(); |
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$found = []; |
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foreach ($files as $file) { |
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$ext = $file->extension(); |
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if (!in_array($ext, $supportedExtensions)) |
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continue; |
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$found[] = [ |
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'name' => substr($file->path(), $fsPathLength), |
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'extension' => $ext |
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]; |
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} |
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if (count($found) == 0) { |
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throw new \InvalidArgumentException("Unable to find template with name '{$name}' on '{$this->fs->path()}'"); |
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} |
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if (count($found) > 1) { |
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throw new \InvalidArgumentException("Mutiple templates found for the name '{$name}' on '{$this->fs->path()}'"); |
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} |
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return $this->loaders[$found[0]['extension']]->load($found[0]['name']); |
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} |
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} |
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tarsana /
command
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