<?php /*--------------------------------------------------------------------------------------------------------| www.vdm.io |------/ __ __ _ _____ _ _ __ __ _ _ _ \ \ / / | | | __ \ | | | | | \/ | | | | | | | \ \ / /_ _ ___| |_ | | | | _____ _____| | ___ _ __ _ __ ___ ___ _ __ | |_ | \ / | ___| |_| |__ ___ __| | \ \/ / _` / __| __| | | | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` | \ / (_| \__ \ |_ | |__| | __/\ V / __/ | (_) | |_) | | | | | | __/ | | | |_ | | | | __/ |_| | | | (_) | (_| | \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_| |_|\___|\__|_| |_|\___/ \__,_| | | |_| /-------------------------------------------------------------------------------------------------------------------------------/ @version 2.6.x @created 30th April, 2015 @package Component Builder @subpackage indenter.php @author Llewellyn van der Merwe <http://joomlacomponentbuilder.com> @github Joomla Component Builder <https://github.com/vdm-io/Joomla-Component-Builder> @copyright Copyright (C) 2015. All Rights Reserved @license GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html Builds Complex Joomla Components /-----------------------------------------------------------------------------------------------------------------------------*/ // No direct access to this file defined('_JEXEC') or die('Restricted access'); /** * @link https://github.com/gajus/dindent for the canonical source repository * @license https://github.com/gajus/dindent/blob/master/LICENSE BSD 3-Clause */ class Indenter { private $log = array(), $options = array( 'indentation_character' => ' ' ), $inline_elements = array('b', 'big', 'i', 'small', 'tt', 'abbr', 'acronym', 'cite', 'code', 'dfn', 'em', 'kbd', 'strong', 'samp', 'var', 'a', 'bdo', 'br', 'img', 'span', 'sub', 'sup'), $temporary_replacements_script = array(), $temporary_replacements_inline = array(); const ELEMENT_TYPE_BLOCK = 0; const ELEMENT_TYPE_INLINE = 1; const MATCH_INDENT_NO = 0; const MATCH_INDENT_DECREASE = 1; const MATCH_INDENT_INCREASE = 2; const MATCH_DISCARD = 3; /** * @param array $options */ public function __construct (array $options = array()) { foreach ($options as $name => $value) { if (!array_key_exists($name, $this->options)) { throw new Exception\InvalidArgumentException('Unrecognized option.'); } $this->options[$name] = $value; } } /** * @param string $element_name Element name, e.g. "b". * @param ELEMENT_TYPE_BLOCK|ELEMENT_TYPE_INLINE $type * @return null */ public function setElementType ($element_name, $type) { if ($type === static::ELEMENT_TYPE_BLOCK) { $this->inline_elements = array_diff($this->inline_elements, array($element_name)); } else if ($type === static::ELEMENT_TYPE_INLINE) { $this->inline_elements[] = $element_name; } else { throw new Exception\InvalidArgumentException('Unrecognized element type.'); } $this->inline_elements = array_unique($this->inline_elements); } /** * @param string $input HTML input. * @return string Indented HTML. */ public function indent ($input) { $this->log = array(); // Dindent does not indent <script> body. Instead, it temporary removes it from the code, indents the input, and restores the script body. if (preg_match_all('/<script\b[^>]*>([\s\S]*?)<\/script>/mi', $input, $matches)) { $this->temporary_replacements_script = $matches[0]; foreach ($matches[0] as $i => $match) { $input = str_replace($match, '<script>' . ($i + 1) . '</script>', $input); } } // Removing double whitespaces to make the source code easier to read. // With exception of <pre>/ CSS white-space changing the default behaviour, double whitespace is meaningless in HTML output. // This reason alone is sufficient not to use Dindent in production. $input = str_replace("\t", '', $input); $input = preg_replace('/\s{2,}/', ' ', $input); // Remove inline elements and replace them with text entities. if (preg_match_all('/<(' . implode('|', $this->inline_elements) . ')[^>]*>(?:[^<]*)<\/\1>/', $input, $matches)) { $this->temporary_replacements_inline = $matches[0]; foreach ($matches[0] as $i => $match) { $input = str_replace($match, 'ᐃ' . ($i + 1) . 'ᐃ', $input); } } $subject = $input; $output = ''; $next_line_indentation_level = 0; do { $indentation_level = $next_line_indentation_level; $patterns = array( // block tag '/^(<([a-z]+)(?:[^>]*)>(?:[^<]*)<\/(?:\2)>)/' => static::MATCH_INDENT_NO, // DOCTYPE '/^<!([^>]*)>/' => static::MATCH_INDENT_NO, // tag with implied closing '/^<(input|link|meta|base|br|img|hr)([^>]*)>/' => static::MATCH_INDENT_NO, // opening tag '/^<[^\/]([^>]*)>/' => static::MATCH_INDENT_INCREASE, // closing tag '/^<\/([^>]*)>/' => static::MATCH_INDENT_DECREASE, // self-closing tag '/^<(.+)\/>/' => static::MATCH_INDENT_DECREASE, // whitespace '/^(\s+)/' => static::MATCH_DISCARD, // text node '/([^<]+)/' => static::MATCH_INDENT_NO ); $rules = array('NO', 'DECREASE', 'INCREASE', 'DISCARD'); foreach ($patterns as $pattern => $rule) { if ($match = preg_match($pattern, $subject, $matches)) { $this->log[] = array( 'rule' => $rules[$rule], 'pattern' => $pattern, 'subject' => $subject, 'match' => $matches[0] ); $subject = mb_substr($subject, mb_strlen($matches[0])); if ($rule === static::MATCH_DISCARD) { break; } if ($rule === static::MATCH_INDENT_NO) { } else if ($rule === static::MATCH_INDENT_DECREASE) { $next_line_indentation_level--; $indentation_level--; } else { $next_line_indentation_level++; } if ($indentation_level < 0) { $indentation_level = 0; } $output .= str_repeat($this->options['indentation_character'], $indentation_level) . $matches[0] . "\n"; break; } } } while ($match); $interpreted_input = ''; foreach ($this->log as $e) { $interpreted_input .= $e['match']; } if ($interpreted_input !== $input) { throw new Exception\RuntimeException('Did not reproduce the exact input.'); } $output = preg_replace('/(<(\w+)[^>]*>)\s*(<\/\2>)/', '\\1\\3', $output); foreach ($this->temporary_replacements_script as $i => $original) { $output = str_replace('<script>' . ($i + 1) . '</script>', $original, $output); } foreach ($this->temporary_replacements_inline as $i => $original) { $output = str_replace('ᐃ' . ($i + 1) . 'ᐃ', $original, $output); } return trim($output); } /** * Debugging utility. Get log for the last indent operation. * * @return array */ public function getLog () { return $this->log; } }