Discuz template engine

Discuz’s template engine is a relatively good template engine class. I found it on the Internet a long time ago. Visually, this Discuz’s template engine should be very old. It is a version before DZ7.2. I also use it very smoothly. Share it. Download this template class.

There are two files. A template class, a function that needs to be used in template replacement
Original address: http://blog.qita.in

?/**
 * Template class - parsed using Discuz template engine
 * http://blog.qita.in
*/

require_once (DIR_ROOT . '/../function/template.func.php');
class Template {
 const DIR_SEP = DIRECTORY_SEPARATOR;

 /**
 * Template instance
 *
 * @staticvar
 * @var object Template
*/
 protected static $_instance;

 /**
 * Template parameter information
 *
 * @var array
*/
 protected $_options = array();

 /**
 * Singleton mode calling method
 *
 * @static
 * @return object Template
*/
 public static function getInstance( ) {
 if (!self :: $_instance instanceof self)
 self :: $_instance = new self();
 return self :: $_instance;
 }

 /**
 * Constructor
 *
 * @return void
*/
 private function __construct () {
 $this -> _options = array('template_dir' => 'templates' . self :: DIR_SEP, // The directory where the template file is located
 'cache_dir' => 'templates' . self :: DIR_SEP . 'cache' . self :: DIR_SEP, // Directory where cache files are stored
 'auto_update' => false, // Whether to regenerate the cache when the template file is changed
 'cache_lifetime' => 0, // Cache life cycle ( minutes), 0 means permanent
 );
 }

 /**
 * Set template parameter information
 *
 * @param array $options parameter array
 * @return void
*/
 public function setOptions(array $options) {
 foreach ($options as $name => $value)
 $this - > set($name, $value);
 }

 /**
 * Set template parameters
 *
 * @param string $name parameter name
 * @param mixed $value parameter value
 * @return void
*/
 public function set($name, $value) {
 switch ($name) {
 case 'template_dir':
 $ value = $this -> _trimpath($value);
 if (!file_exists($value))
 $this -> _throwException("The specified template directory "$value"" was not found);
 $this -> ; _options['template_dir'] = $value;
 break;
 case 'cache_dir':
 $value = $this -> _trimpath($value);
 if (!file_exists($value))
 $this -> ; _throwException("The specified cache directory "$value"" was not found);
 $this -> _options['cache_dir'] = $value;
 break;
 case 'auto_update':
 $this -> _options[ 'auto_update'] = (boolean) $value;
 break;
 case 'cache_lifetime':
 $this -> _options['cache_lifetime'] = (float) $value;
 break;
 default:
 $this -> ; _throwException("Unknown template configuration option "$name"");
 }
 }

 /**
 * Set template parameters through magic method
 *
 * @see Template::set()
 * @param string $name parameter name
 * @param mixed $value parameter value
 * @return void
*/
 public function __set($name, $value) {
 $this -> set( $name, $value);
 }

 /**
 * Get template file
 *
 * @param string $file template file name
 * @return string
*/
 public function getfile($file) {
 $cachefile = $this -> _getCacheFile($file);
 if (!file_exists($ cachefile))
 $this -> cache($file);
 return $cachefile;
 }

 /**
 * Check whether the template file needs to update the cache
 *
 * @param string $file template file name
 * @param string $md5data template file md5 verification information
 * @param integer $md5data template file expiration time verification information
 * @return void
*/
 public function check($file, $md5data, $expireTime) {
 if ( $this -> _options['auto_update'] && md5_file($this -> _getTplFile($file)) != $md5data)
 $this -> cache($file);
 if ($this -> _options['cache_lifetime'] != 0 && (time() - $expireTime >= $this -> _options['cache_lifetime'] * 60))
 $this -> cache($file);
 }

 /**
 * Cache template files
 *
 * @param string $file template file name
 * @return void
*/
 public function cache($file) {
 $tplfile = $this -> _getTplFile($file);

 if (!is_readable($tplfile)) {
 $this -> ; _throwException("Template file "$tplfile" was not found or could not be opened");
 }
 // Get template content
 $template = file_get_contents($tplfile);
 // Filter/s", "{\1}", $template);
 // Replace language pack variables
 // $template = preg_replace("/{langs+(.+?)}/ies", "languagevar('\1')", $template);
 // Replace PHP newline character
 $template = str_replace("{LF}", "="\n"?>", $template);
 // Replace direct variable output
 $varRegexp = "((\$[a-zA-Z_x7f-xff][a-zA- Z0-9_x7f-xff]*)"
 . "([[a-zA-Z0-9_-."'[]$x7f-xff]+])*)";
 $template = preg_replace("/{( \$[a-zA-Z0-9_[]'"$.x7f-xff]+)}/s", "=\1?>", $template);
 $template = preg_replace(" /$varRegexp/es", "addquote('=\1?>')", $template);
 $template = preg_replace("/==$varRegexp?>? >/es", "addquote('=\1?>')", $template);
 // Replace template loading command
 $template = preg_replace("/[nrt]*{templates+( [a-z0-9_]+)}[nrt]*/is",
 "rn include($template->getfile('\1')); ?>rn",
 $template
 ) ;
 $template = preg_replace("/[nrt]*{templates+(.+?)}[nrt]*/is",
 "rn include($template->getfile(\1)); ?> ;rn",
 $template
 );
 // Replace specific function
 $template = preg_replace("/[nrt]*{evals+(.+?)}[nrt]*/ies",
 "stripvtags('< ;? \1 ?>','')",
 $template
 );
 $template = preg_replace("/[nrt]*{echos+(.+?)}[nrt]*/ies",
 " stripvtags(' echo \1; ?>','')",
 $template
 );
 $template = preg_replace("/([nrt]*){elseifs+(.+?)}([ nrt]*)/ies",
 "stripvtags('\1 } elseif(\2) { ?>\3','')",
 $template
 );
 $template = preg_replace("/ ([nrt]*){else}([nrt]*)/is",
 "\1 } else { ?>\2",
 $template
 );
 // Replace loop function and conditional judgment Statement
 $nest = 5;
 for ($i = 0; $i  $template = preg_replace("/[nrt]*{loops+(S+)s+(S+)}[nr ]*(.+?)[nr]*{/loop}[nrt]*/ies",
 "stripvtags(' if(is_array(\1)) { foreach(\1 as \2) { ? >','\3 } } ?>')",
 $template
 );
 $template = preg_replace("/[nrt]*{loops+(S+)s+(S+)s+(S+)} [nrt]*(.+?)[nrt]*{/loop}[nrt]*/ies",
 "stripvtags(' if(is_array(\1)) { foreach(\1 as \2 = > \3) { ?>','\4 } } ?>')",
 $template
 );
 $template = preg_replace("/([nrt]*){ifs+(.+ ?)}([nr]*)(.+?)([nr]*){/if}([nrt]*)/ies",
 "stripvtags('\1 if(\2) { ? >\3','\4\5 } ?>\6')",
 $template
 );
 }
 // Constant replacement
 $template = preg_replace("/{([a-zA -Z_x7f-xff][a-zA-Z0-9_x7f-xff]*)}/s",
 "=\1?>",
 $template
 );
 // Delete PHP code break Extra spaces and line breaks
 $template = preg_replace("/ ?>[nr]* /s", " ", $template);
 // Other replacements
 $template = preg_replace("/"(http )?[w./:]+?[^"]+?&[^"]+?"/e",
 "transamp('\0')",
 $template
 );
 $template = preg_replace ("/<script>]*?src="(.+?)".*?>s*</script>/ise",
 "stripscriptamp('\1')",
 $template
 );
 $template = preg_replace("/[nrt]*{blocks+([a-zA-Z0-9_]+)}(.+?){/block}/ies",
 "stripblock(' \1', '\2')",
 $template
 );
 // Add md5 and expiration check
 $md5data = md5_file($tplfile);
 $expireTime = time();
 $template = "< ;? if (!class_exists('template')) die('Access Denied');"
 . "$template->getInstance()->check('$file', '$md5data', $expireTime) ;"
 . "?>rn$template";
 // Write cache file
 $cachefile = $this -> _getCacheFile($file);
 $makepath = $this -> _makepath($cachefile);
 if ($makepath !== true)
 $this -> _throwException("Unable to create cache directory "$makepath"");
 file_put_contents($cachefile, $template);
 }

 /**
 * Correct the path to a form suitable for the operating system
 *
 * @param string $path path name
 * @return string
 */
 protected function _trimpath($path) {
 return str_replace(array('/', '\', '//', '\\'), self :: DIR_SEP, $path);
 }

 / **
 * Get the template file name and path
 *
 * @param string $file template file name
 * @return string
*/
 protected function _getTplFile($file) {
 return $this -> _trimpath($this -> _options['template_dir'] . self :: DIR_SEP . $file);
 }

	/**
 * Get the template cache file name and path
 *
 * @param string $file template file name
 * @return string
*/
	protected function _getCacheFile($file) {
		$file = preg_replace('/.[a-z0-9-_]+$/i', '.cache.php', $file);
		return $this -> _trimpath($this -> _options['cache_dir'] . self :: DIR_SEP . $file);
	}

	/**
 * Create a non-existing folder based on the specified path
 *
 * @param string $path path/folder name
 * @return string
*/
	protected function _makepath($path) {
		$dirs = explode(self :: DIR_SEP, dirname($this -> _trimpath($path)));
		$tmp = '';
		foreach ($dirs as $dir) {
			$tmp .= $dir . self :: DIR_SEP;
			if (!file_exists($tmp) && !@mkdir($tmp, 0777))
				return $tmp;
		}
		return true;
	}

	/**
 * Throw an error message
 *
 * @param string $message
 * @return void
*/
	protected function _throwException($message) {
		throw new Exception($message);
	}
}

?>

模板函数文件

/**
 * Functions needed for template replacement
 * http://blog.qita.in
*/

function transamp($template) {
    $template = str_replace('&', '&', $template);
    $template = str_replace('&', '&', $template);
    $template = str_replace('"', '"', $template);
    return $template;
}

function stripvtags($expr, $statement) {
    $expr = str_replace("\"", """, preg_replace("/=(\$.+?)?>/s", "\1", $expr));
    $statement = str_replace("\"", """, $statement);
    return $expr . $statement;
}

function addquote($var) {
    return str_replace("\"", """, preg_replace("/[([a-zA-Z0-9_-.x7f-xff]+)]/s", "['\1']", $var));
}

function stripscriptamp($s) {
    $s = str_replace('&', '&', $s);
    return "";
}

function stripblock($var, $s) {
    $s = str_replace('\"', '"', $s);
    $s = preg_replace("/=\$(.+?)?>/", "{$\1}", $s);
    preg_match_all("/=(.+?)?>/e", $s, $constary);
    $constadd = '';
    $constary[1] = array_unique($constary[1]);
    foreach($constary[1] as $const) {
        $constadd .= '$__' . $const  .' = ' . $const . ';';
    }
    $s = preg_replace("/=(.+?)?>/", "{$__\1}", $s);
    $s = str_replace('?>', "n$$var .=     $s = str_replace('', "nEOF;n", $s);
    return "";
}
?>