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<?php |
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namespace Mezon\HtmlTemplate; |
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use Mezon\Conf\Conf; |
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use Mezon\TemplateEngine\TemplateEngine; |
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/** |
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* Class HtmlTemplate |
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* |
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* @package Mezon |
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* @subpackage HtmlTemplate |
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* @author Dodonov A.A. |
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* @version v.1.0 (2019/08/07) |
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* @copyright Copyright (c) 2019, aeon.org |
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*/ |
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/** |
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* Template class |
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* |
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* @author Dodonov A.A. |
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*/ |
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class HtmlTemplate |
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{ |
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/** |
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* Loaded template content |
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*/ |
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private $template = false; |
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/** |
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* Loaded resources |
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*/ |
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private $resources = null; |
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/** |
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* Path to the template folder |
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* |
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* @var array |
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*/ |
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private $paths = false; |
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/** |
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* Page blocks |
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* |
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* @var array |
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*/ |
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private $blocks = []; |
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/** |
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* Page variables |
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* |
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* @var array |
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*/ |
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private $pageVars = []; |
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/** |
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* Template сonstructor |
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* |
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* @param string|array $path |
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* Path to template |
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* @param string $template |
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* Page layout |
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* @param array $blocks |
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* Page blocks |
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*/ |
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public function __construct($path, string $template = 'index', array $blocks = []) |
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{ |
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if (is_string($path)) { |
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$this->paths = [ |
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$path |
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]; |
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} elseif (is_array($path)) { |
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$this->paths = $path; |
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} else { |
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throw (new \Exception('Invalid type for $path parameter')); |
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} |
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$this->resetLayout($template); |
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$this->blocks = []; |
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foreach ($blocks as $blockName) { |
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$this->addBlock($blockName); |
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} |
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// output all blocks in one place |
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// but each block can be inserted in {$blockName} places |
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$this->setPageVar('content-blocks', implode('', $this->blocks)); |
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} |
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/** |
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* Method adds paths to the setup ones |
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* |
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* @param array $paths |
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* paths to directories with the template's static content |
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*/ |
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public function addPaths(array $paths): void |
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{ |
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$this->paths = array_merge($paths, $this->paths); |
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} |
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/** |
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* Resetting paths |
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* |
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* @param array $paths |
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*/ |
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public function setPaths(array $paths): void |
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{ |
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$this->paths = $paths; |
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} |
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/** |
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* Method returns all setup puths of the template |
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* |
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* @return array |
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*/ |
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public function getPaths(): array |
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{ |
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return $this->paths; |
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} |
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/** |
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* Setting page variables |
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* |
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* @param string $var |
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* Variable name |
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* @param mixed $value |
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* Variable value |
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*/ |
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public function setPageVar(string $var, $value): void |
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{ |
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$this->pageVars[$var] = $value; |
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} |
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/** |
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* Method sets multiple variables |
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* |
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* @param array $vars |
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*/ |
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public function setPageVars(array $vars): void |
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{ |
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foreach ($vars as $var => $value) { |
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$this->setPageVar($var, $value); |
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} |
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} |
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/** |
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* Getting page var |
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* |
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* @param string $var |
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* variable name |
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* @return mixed variable value, or exception if the variable was not found |
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*/ |
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public function getPageVar(string $var) |
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{ |
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if (isset($this->pageVars[$var]) === false) { |
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throw (new \Exception('Template variable ' . $var . ' was not set')); |
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} |
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return $this->pageVars[$var]; |
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} |
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/** |
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* Setting page variables from file's content |
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* |
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* @param string $var |
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* Variable name |
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* @param mixed $path |
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* Path to file |
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*/ |
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public function setPageVarFromFile(string $var, string $path): void |
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{ |
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$this->setPageVar($var, file_get_contents($path)); |
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} |
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/** |
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* Compiling the page with it's variables |
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* |
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* @param string $content |
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* Compiling content |
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*/ |
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public function compilePageVars(string &$content): void |
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{ |
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foreach ($this->pageVars as $key => $value) { |
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if (is_array($value) === false && is_object($value) === false) { |
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// only scalars can be substituted in this way |
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$content = str_replace('{' . $key . '}', $value, $content); |
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} |
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} |
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$content = TemplateEngine::unwrapBlocks($content, $this->pageVars); |
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$content = TemplateEngine::compileSwitch($content); |
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} |
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/** |
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* Checking if the file exists |
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* |
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* @param string $fileSubPath |
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* file sub path |
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* @return bool true if the file exists, false otherwise |
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*/ |
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protected function fileExists(string $fileSubPath): bool |
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{ |
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foreach ($this->paths as $path) { |
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if (file_exists(rtrim($path, '/\\') . '/' . trim($fileSubPath, '/\\'))) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Getting content of the file |
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* |
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* @param string $fileSubPath |
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* file sub path |
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* @return string file content |
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*/ |
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protected function fileGetContents(string $fileSubPath): string |
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{ |
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foreach ($this->paths as $path) { |
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$finalPath = rtrim($path, '/\\') . '/' . trim($fileSubPath, '/\\'); |
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if (file_exists($finalPath)) { |
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return file_get_contents($finalPath); |
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} |
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} |
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// @codeCoverageIgnoreStart |
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return ''; |
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} |
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// @codeCoverageIgnoreEnd |
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/** |
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* Method resets layout |
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* |
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* @param string $template |
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* Template name |
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*/ |
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public function resetLayout(string $template): void |
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{ |
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$template .= '.html'; |
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if ($this->fileExists($template)) { |
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$this->template = $this->fileGetContents($template); |
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} elseif ($this->fileExists('Res/Templates/' . $template)) { |
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$this->template = $this->fileGetContents('Res/Templates/' . $template); |
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} else { |
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throw (new \Exception( |
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'Template file ' . $template . ' on the paths ' . implode(', ', $this->paths) . ' was not found', |
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- 1)); |
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} |
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} |
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/** |
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* Method returns compiled page resources |
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* |
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* @return string Compiled resources includers |
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*/ |
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private function _getResources(): string |
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{ |
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$content = ''; |
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if ($this->resources !== null) { |
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$cssFiles = $this->resources->getCssFiles(); |
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foreach ($cssFiles as $cSSFile) { |
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$content .= ' |
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<link href="' . $cSSFile . '" rel="stylesheet" type="text/css">'; |
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} |
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$jsFiles = $this->resources->getJsFiles(); |
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foreach ($jsFiles as $jSFile) { |
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$content .= ' |
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<script src="' . $jSFile . '"></script>'; |
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} |
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} |
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return $content; |
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} |
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/** |
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* Compile template |
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* |
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* @return string Compiled template |
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*/ |
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public function compile(): string |
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{ |
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$this->setPageVar('resources', $this->_getResources()); |
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$this->setPageVar('mezon-http-path', Conf::getConfigValue('@mezon-http-path')); |
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$this->setPageVar('service-http-path', Conf::getConfigValue('@service-http-path')); |
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if (isset($_SERVER['HTTP_HOST'])) { |
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$this->setPageVar('host', $_SERVER['HTTP_HOST']); |
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} |
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foreach ($this->blocks as $blockName => $block) { |
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$this->setPageVar($blockName, $block); |
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} |
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$this->compilePageVars($this->template); |
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$this->template = preg_replace('/\{[a-zA-z0-9\-]*\}/', '', $this->template); |
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return $this->template; |
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} |
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/** |
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* Does block exist |
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* |
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* @param string $blockName block name |
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* @return bool does block exist? |
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*/ |
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public function blockExists(string $blockName):bool{ |
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if ($this->fileExists('Res/Blocks/' . $blockName . '.tpl')) { |
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return true; |
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} elseif ($this->fileExists('Blocks/' . $blockName . '.tpl')) { |
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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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* Method returns block's content |
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* |
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* @param string $blockName |
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* @return string block's content |
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*/ |
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protected function readBlock(string $blockName): string |
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{ |
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if ($this->fileExists('Res/Blocks/' . $blockName . '.tpl')) { |
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$blockContent = $this->fileGetContents('Res/Blocks/' . $blockName . '.tpl'); |
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} elseif ($this->fileExists('Blocks/' . $blockName . '.tpl')) { |
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$blockContent = $this->fileGetContents('Blocks/' . $blockName . '.tpl'); |
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} else { |
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throw (new \Exception('Block ' . $blockName . ' was not found', - 1)); |
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} |
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return $blockContent; |
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} |
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/** |
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* Method adds block to page |
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* |
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* @param string $blockName |
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* Name of the additing block |
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*/ |
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public function addBlock(string $blockName): void |
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{ |
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$this->blocks[$blockName] = $this->readBlock($blockName); |
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} |
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/** |
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* Method returns block's content |
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* |
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* @param string $blockName |
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* @return string block's content |
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*/ |
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public function getBlock(string $blockName): string |
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{ |
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return $this->readBlock($blockName); |
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} |
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/** |
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* Method sets template resources |
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* |
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* @param TemplateResources $resources |
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* resources |
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*/ |
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public function setResources(TemplateResources $resources): void |
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{ |
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$this->resources = $resources; |
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} |
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} |
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