HTML

reworked.php

<?php

namespace Atom\Parser;

class Html {
 
	private $separator = '-{}-';

	private $single_tags = 'meta|img|hr|br|link|!--|!DOCTYPE|input';
 
	//-- Don't edit below this --
 
	private $html;

	private $level = -1;

	public  $level_array = array();
 
	function __construct($html)
	{
		$this->html = $this->clean($html);
	}

	private function get_element($data)
	{
		$data = explode($this->separator, $data);
		$data = explode('-', $data[1]);

		return $this->level_array[$data[0]][$data[1]];
	}

	private function to_html($string, $level)
	{
		$items = $this->get_replacements($string);

		foreach($items as $item)
		{
			$elem   = $this->get_element($item);
			$string = str_replace(
				$item,
				$level === 0 ? $elem['htmlText'] : '<'.$elem['tag'].$elem['attr'].'>'.$elem['htmlText'].'</'.$elem['tag'].'>',
				$string
			);
		}
		return $string;
	}

	private function replace_single_tags()
	{
		$result = preg_match_all('/<('.$this->single_tags.')(.[^><]*)?>/is', $this->html, $matches);

		if($result > 0)
		{
			foreach ($matches[0] as $value)
			{
				$this->html = str_replace($value, '', $this->html);
			}
		}
	}

	private function replace_simple_tags()
	{
		$result = preg_match_all('/<(.[^\s]*)(.[^><]*)?>(.[^<]*)?<\/\1>/is', $this->html, $matches);

		if ($result>0)
		{
			$this->level++ and $level = array();

			foreach($matches[0] as $id => $value)
			{
				if($this->level === 0)
				{
					$html_text = $value;
				}
				else
				{
					$html_text=$this->to_html($matches[3][$id], $this->level-1);
 				}

				$level[] = array('str' => $value, 'rep' => $this->separator.$this->level.'-'.$id.$this->separator, 'tag' => $matches[1][$id], 'level' => $this->level, 'text' => $matches[3][$id], 'attr' => $matches[2][$id] , 'htmlText' => $html_text);
 
				$this->html = str_replace($value, $this->separator.$this->level.'-'.$id.$this->separator, $this->html);
			}

			$this->level_array[$this->level] = $level;
		}
	}

	private function replace_remaining_tags()
	{
		$result = preg_match_all('/<(.[^\s]*)(.[^><]*)?>(.*)?<\/\1>/is', $this->html, $matches);

		if($result > 0)
		{
			$this->level++ and $level = array();

			foreach($matches[0] as $id => $value)
			{
				if($this->level === 0)
				{
					$html_text = $matches[3][$id];
				}
				else
				{
					$html_text = $this->to_html($matches[3][$id], $this->level-1);
 				}

				$level[] = array('str' => $value, 'rep' => $this->separator.$this->level.'-'.$id.$this->separator, 'tag' => $matches[1][$id], 'level' => $this->level, 'text' => $matches[3][$id], 'attr' => $matches[2][$id] , 'htmlText' => $html_text);
 
				$this->html = str_replace($value, $this->separator.$this->level.'-'.$id.$this->separator, $this->html);
			}

			$this->level[$this->level] = $level;
		}
	}

	private function simple_tags_exist()
	{
		return preg_match('/<(.[^\s]*)(.[^><]*)?>(.[^<]*)?<\/\1>/is', $this->html) > 0;
	}

	private function single_tags_exist()
	{
		return preg_match('/<('.$this->single_tags.')(.[^><]*)?>/is', $this->html) > 0;
	}

	private function clean($html)
	{
		// Strip characters unnecessary to parsing.
		$html = str_replace(array("\n","\r",'&nbsp;',"\t"),'',$html);

		// Strip extra whitespace
		$html = preg_replace('|  +|', ' ', $html);

		return $html;
	}

	public function to_array($html = '')
	{
		if($html!='')
		{
			$this->html = $this->clean($html);
		}

		while($this->simple_tags_exist() or $this->single_tags_exist())
		{
			$this->replace_single_tags();
			$this->replace_simple_tags();
		}

		$this->replace_remaining_tags();
 
		return $this->get_array($this->html);
	}

	private function get_replacements($data)
	{
		$final = array();
		$data  = explode($this->separator, $data);
		$count = count($data);

		for($i=0; $i<($count-1)/2; $i++)
		{
			$final[] = $this->separator.$data[$i*2+1].$this->separator;
		}

		return $final;
	}

	private function starts_with_text($data)
	{
		$data = substr(trim(str_replace(array("\n","\r"),'',$data)), 0, 1);

		return $data != '<' and $data != '>';
	}

	private function in_array(array $array, $string)
	{
		foreach($array as $item)
		{
			if(strpos($str, $item) !== false)
			{
				return true;
			}
		}

		return false;
	}

	private function get_array($html, $parent = '')
	{
		$final=array();

		if(strpos($html, $this->separator) !==false )
		{
			$replacements = $this->get_replacements($html);

			foreach($replacements as $replacement)
			{
				$repl        = $replacement;
 				$replacement = explode($this->separator, $replacement);
				$replacement = explode('-',$replacement[1]);
				$element     = $this->level_array[$replacement[0]][$replacement[1]];

				$this->level_array[$replacement[0]][$replacement[1]]['parent'] = $parent;
 
				$final[] = array( 'tag' => $element['tag'], 'innerHTML' => $element['htmlText'], 'repl' => $element['rep'],'stratr' => $element['attr'], 'level' => $element['level'], 'parent' => $parent, 'children' => $this->get_array($element['text'], $repl));
			}
		}
		return $final;
	}

	public function loadNode($rep)
	{
		$element = $this->get_element($rep);

		return array( 'tag' => $element['tag'], 'innerHTML' => $element['htmlText'], 'repl' => $element['rep'], 'stratr' => $element['attr'], 'level' => $element['level'], 'parent' => $element['parent']);
	}
}

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