oranj/class.page.php

## class.page.php
<?php

class CN_Page {

	private $page_regions = Array();
	private $page_region_data = Array();
	private $page_region_count = Array();

	const dynamic_key = 'dynamic';
	const html_key = 'html';

	const placeholder = '[[%s]]';
	const region_comment_bof = '<!-- BOF %s -->';
	const region_comment_eof = '<!-- EOF %s -->';

	const regex = '/\(\[region\:([^\]]+)\]\)/i';

	public function __construct($filename) {
		$this->load_file($filename);
	}

	public function load_file($filename) {
		$fullpath = CFG("dir", "templates").$filename;
		if (! file_exists($fullpath)) {
			throw new Exception("Template <strong>$fullpath</strong> does not exist");
		}
		$this->parse_template(file_get_contents($fullpath));
	}

	public function get_page() {
		$html = '';
		foreach ($this->page_regions as $region) {
			list($type, $info) = $region;

			switch($type) {
				case self::dynamic_key:
					if (isset($this->page_region_data[$info])) {
						$html .= sprintf(self::region_comment_bof, $info).$this->page_region_data[$info].sprintf(self::region_comment_eof, $info);
					} else {
						$html .= sprintf(self::placeholder, $info);
					}
					break;
				case self::html_key:
					$html .= $info;
					break;
			}
		}

		return $html;
	}

	public function set_region($key, $html) {
		$this->page_region_data[$key] = $html;
	}

	private function add_region_dynamic($key) {
		if (! isset($this->page_region_count[$key])) {
			$this->page_region_count[$key] = 1;
		} else {
			$this->page_region_count[$key]++;
		}

		$this->page_regions[]= Array(self::dynamic_key, $key);
	}

	private function add_region_html($text) {
		$this->page_regions[]= Array(self::html_key, $text);
	}

	private function parse_template($in_html) {
		if (preg_match_all(self::regex, $in_html, $matches, PREG_OFFSET_CAPTURE)) {
			$previous_end = 0;
			foreach ($matches[0] as $index => $match) {

				if ($previous_end != $match[1]) {
					$this->add_region_html(substr($in_html, $previous_end, $match[1] - $previous_end));
				}

				$this->add_region_dynamic($matches[1][$index][0]);

				$previous_end = $match[1] + strlen($match[0]);
			}
			if ($previous_end != $match[1]) {
				$this->add_region_html(substr($in_html, $previous_end));
			}

		} else {
			$this->add_region_html($in_html);
		}
	}
}

## index.tpl
<!DOCTYPE html>
<html>
	<head>
		([region:head])
	</head>
	<body>
		([region:header])
		([region:left])
		([region:right])
		([region:content_title])
		([region:content])
	</body>
</html>
	<?php

	class CN_Page {

	private $page_regions = Array();
	private $page_region_data = Array();
	private $page_region_count = Array();

	const dynamic_key = 'dynamic';
	const html_key = 'html';

	const placeholder = '[[%s]]';
	const region_comment_bof = '<!-- BOF %s -->';
	const region_comment_eof = '<!-- EOF %s -->';

	const regex = '/\(\[region\:([^\]]+)\]\)/i';

	public function __construct($filename) {
	$this->load_file($filename);
	}

	public function load_file($filename) {
	$fullpath = CFG("dir", "templates").$filename;
	if (! file_exists($fullpath)) {
	throw new Exception("Template <strong>$fullpath</strong> does not exist");
	}
	$this->parse_template(file_get_contents($fullpath));
	}

	public function get_page() {
	$html = '';
	foreach ($this->page_regions as $region) {
	list($type, $info) = $region;

	switch($type) {
	case self::dynamic_key:
	if (isset($this->page_region_data[$info])) {
	$html .= sprintf(self::region_comment_bof, $info).$this->page_region_data[$info].sprintf(self::region_comment_eof, $info);
	} else {
	$html .= sprintf(self::placeholder, $info);
	}
	break;
	case self::html_key:
	$html .= $info;
	break;
	}
	}

	return $html;
	}

	public function set_region($key, $html) {
	$this->page_region_data[$key] = $html;
	}

	private function add_region_dynamic($key) {
	if (! isset($this->page_region_count[$key])) {
	$this->page_region_count[$key] = 1;
	} else {
	$this->page_region_count[$key]++;
	}

	$this->page_regions[]= Array(self::dynamic_key, $key);
	}

	private function add_region_html($text) {
	$this->page_regions[]= Array(self::html_key, $text);
	}

	private function parse_template($in_html) {
	if (preg_match_all(self::regex, $in_html, $matches, PREG_OFFSET_CAPTURE)) {
	$previous_end = 0;
	foreach ($matches[0] as $index => $match) {

	if ($previous_end != $match[1]) {
	$this->add_region_html(substr($in_html, $previous_end, $match[1] - $previous_end));
	}

	$this->add_region_dynamic($matches[1][$index][0]);

	$previous_end = $match[1] + strlen($match[0]);
	}
	if ($previous_end != $match[1]) {
	$this->add_region_html(substr($in_html, $previous_end));
	}

	} else {
	$this->add_region_html($in_html);
	}
	}
	}
	<!DOCTYPE html>
	<html>
	<head>
	([region:head])
	</head>
	<body>
	([region:header])
	([region:left])
	([region:right])
	([region:content_title])
	([region:content])
	</body>
	</html>