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<?php |
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/** |
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* MIT License |
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* |
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* Copyright (c) 2016 Andrews Lince |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* copies of the Software, and to permit persons to whom the Software is |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* 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, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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namespace Slim\Views; |
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use Psr\Http\Message\ResponseInterface; |
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use InvalidArgumentException; |
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/** |
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* A Mustache view class for Slim 3 Framework |
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* @author Andrews Lince <[email protected]> |
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* @version 1.0.5 |
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* @link https://github.com/andrewslince/slim3-mustache-view |
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* @package Slim/Views |
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* @copyright 2016 Andrews Lince |
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*/ |
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class Mustache |
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{ |
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/** |
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* Instance of Mustache Template Engine |
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* @since 1.0.0 |
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* @var Mustache_Engine |
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*/ |
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protected $templateEngine = null; |
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/** |
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* Constructor method |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @param array $options |
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* @return void |
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*/ |
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public function __construct(array $options = []) |
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{ |
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$this->templateEngine = $this->getTemplateEngine($options); |
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} |
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/** |
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* Render a mustache template |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @param ResponseInterface $response |
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* @param string $template |
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* @param array $data |
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* @return ResponseInterface |
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*/ |
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public function render( |
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ResponseInterface $response, |
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$template, |
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array $data = [] |
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) { |
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// render output |
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$response->getBody()->write( |
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$this->templateEngine->render($template, $data) |
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); |
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return $response; |
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} |
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/** |
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* Fetch a HTML script tag with the template content |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @param string $template Template to fetch content |
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* @param string $options |
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* - (array) htmlAttributes => HTML attributes to print in script tag |
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* - (boolean) minify => returns the minified content |
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* @throws InvalidArgumentException |
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* @return string HTML script tag with the template content |
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*/ |
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public function getTemplateScriptTag($template, array $options = []) |
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{ |
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// validate the template name |
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if (!$template) { |
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throw new InvalidArgumentException( |
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'The template name must be informed to get your HTML script tag' |
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); |
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} |
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// process attributes from HTML script tag |
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if (!isset($options['htmlAttributes'])) { |
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$options['htmlAttributes'] = []; |
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} else if (!is_array($options['htmlAttributes'])) { |
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throw new InvalidArgumentException( |
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'The "htmlAttributes" option must be an array' |
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); |
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} |
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$htmlAttributes = $this->processHtmlAttributes( |
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$options['htmlAttributes'] |
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); |
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// process template content |
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$templateContent = $this->templateEngine->getLoader()->load($template); |
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if (isset($options['minify']) && $options['minify']) { |
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$templateContent = $this->htmlMinify($templateContent); |
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} |
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return "<script $htmlAttributes>$templateContent</script>"; |
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} |
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/** |
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* Returns the instance from Mustache Template Engine |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @param array $options |
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* - template |
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* - extension |
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* - charset |
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* - paths[] |
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* @throws InvalidArgumentException |
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* @return Mustache_Engine |
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*/ |
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private function getTemplateEngine(array $options = []) |
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{ |
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if (is_null($this->templateEngine)) { |
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if (!isset($options['template']['paths'])) { |
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throw new InvalidArgumentException( |
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'Template paths was not informed' |
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); |
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} |
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if (!is_array($options['template']['paths'])) { |
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throw new InvalidArgumentException( |
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'Template paths must be an array' |
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); |
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} |
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$loaders = []; |
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foreach ($options['template']['paths'] as $templatePath) { |
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$loaders[] = new \Mustache_Loader_FilesystemLoader( |
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$templatePath, |
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$options['template'] |
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); |
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} |
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// defines the mustache loaders |
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$options['loader'] = new \Mustache_Loader_CascadingLoader($loaders); |
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$this->templateEngine = new \Mustache_Engine($options); |
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} |
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return $this->templateEngine; |
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} |
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/** |
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* Process the attributes to HTML script tag from template |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @param array $options |
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* - htmlAttributes |
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* @return string |
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*/ |
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private function processHtmlAttributes(array $options = []) |
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{ |
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$htmlAttributes = ''; |
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// default attributes |
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$attributes = array('type' => 'x-tmpl-mustache'); |
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// check if exists custom attributes |
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if (!empty($options)) { |
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$attributes = array_merge($attributes, $options); |
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} |
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// compose the string with all HTML attributes |
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foreach ($attributes as $key => $value) { |
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$htmlAttributes .= " $key=\"$value\""; |
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} |
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return ltrim($htmlAttributes); |
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} |
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/** |
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* Minify a HTML content |
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* @author Andrews Lince <[email protected]> |
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* @since 1.0.0 |
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* @link https://github.com/HossamYousef/slim3-minify/blob/master/src/Slim/Middleware/Minify.php |
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* @param string $content |
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* @return string |
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*/ |
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private function htmlMinify($content) |
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{ |
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$search = array( |
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/** |
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* remove tabs before and after HTML tags |
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*/ |
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'/\>[^\S ]+/s', |
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'/[^\S ]+\</s', |
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/** |
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* remove empty lines (between HTML tags); cannot remove just |
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* any line-end characters because in inline JS they can matter! |
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*/ |
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'/\>[\r\n\t ]+\</s', |
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/** |
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* shorten multiple whitespace sequences |
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*/ |
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'/(\s)+/s', |
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/** |
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* replace end of line by a space |
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*/ |
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'/\n/', |
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/** |
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* remove any HTML comments, except MSIE conditional comments |
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*/ |
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'/<!--(?!\s*(?:\[if [^\]]+]|<!|>))(?:(?!-->).)*-->/s', |
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); |
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$replace = array( |
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'>', |
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'<', |
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'><', |
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'\\1', |
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' ', |
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'' |
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); |
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return preg_replace($search, $replace, $content); |
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} |
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} |
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Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.