From 3433e5e8a84e3952502b79296f945e6dde2a7d75 Mon Sep 17 00:00:00 2001
From: Seb Sauvage <sebsauvage@sebsauvage.net>
Date: Fri, 16 Dec 2011 21:27:16 +0100
Subject: =?UTF-8?q?Version=200.0.32=20beta:=20-=20Changed:=20HTML=20genera?=
 =?UTF-8?q?tion=20moved=20to=20RainTPL=20templates=20(in=20the=20tpl/=20di?=
 =?UTF-8?q?rectory).=20-=20Added:=20Better=20check=20on=20URL=20parameters?=
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---
 inc/rain.tpl.class.php | 1011 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1011 insertions(+)
 create mode 100644 inc/rain.tpl.class.php

(limited to 'inc/rain.tpl.class.php')

diff --git a/inc/rain.tpl.class.php b/inc/rain.tpl.class.php
new file mode 100644
index 00000000..30b6deb8
--- /dev/null
+++ b/inc/rain.tpl.class.php
@@ -0,0 +1,1011 @@
+<?php
+
+/**
+ *  RainTPL
+ *  -------
+ *  Realized by Federico Ulfo & maintained by the Rain Team
+ *  Distributed under GNU/LGPL 3 License
+ *
+ *  @version 2.6.4
+ */
+
+
+class RainTPL{
+
+	// -------------------------
+	// 	CONFIGURATION
+	// -------------------------
+
+		/**
+		 * Template directory
+		 *
+		 * @var string
+		 */
+		static $tpl_dir = "tpl/";
+
+
+		/**
+		 * Cache directory. Is the directory where RainTPL will compile the template and save the cache
+		 *
+		 * @var string
+		 */
+		static $cache_dir = "tmp/";
+
+
+		/**
+		 * Template base URL. RainTPL will add this URL to the relative paths of element selected in $path_replace_list.
+		 *
+		 * @var string
+		 */
+		static $base_url = null;
+
+
+		/**
+		 * Template extension.
+		 *
+		 * @var string
+		 */
+		static $tpl_ext = "html";
+
+
+		/**
+		 * Path replace is a cool features that replace all relative paths of images (<img src="...">), stylesheet (<link href="...">), script (<script src="...">) and link (<a href="...">)
+		 * Set true to enable the path replace.
+		 *
+		 * @var unknown_type
+		 */
+		static $path_replace = true;
+
+
+		/**
+		 * You can set what the path_replace method will replace.
+		 * Avaible options: a, img, link, script, input
+		 *
+		 * @var array
+		 */
+		static $path_replace_list = array( 'a', 'img', 'link', 'script', 'input' );
+
+
+		/**
+		 * You can define in the black list what string are disabled into the template tags
+		 *
+		 * @var unknown_type
+		 */
+		static $black_list = array( '\$this', 'raintpl::', 'self::', '_SESSION', '_SERVER', '_ENV',  'eval', 'exec', 'unlink', 'rmdir' );
+
+
+		/**
+		 * Check template.
+		 * true: checks template update time, if changed it compile them
+		 * false: loads the compiled template. Set false if server doesn't have write permission for cache_directory.
+		 *
+		 */
+		static $check_template_update = true;
+                
+
+		/**
+		 * Debug mode flag.
+		 * True: debug mode is used, syntax errors are displayed directly in template. Execution of script is not terminated.
+		 * False: exception is thrown on found error.
+		 *
+		 * @var bool
+		 */
+		static $debug = false;
+
+	// -------------------------
+
+
+	// -------------------------
+	// 	RAINTPL VARIABLES
+	// -------------------------
+
+		/**
+		 * Is the array where RainTPL keep the variables assigned
+		 *
+		 * @var array
+		 */
+		public $var = array();
+
+		private $tpl = array(),		// variables to keep the template directories and info
+                $cache = false,		// static cache enabled / disabled
+                $cache_id = null;       // identify only one cache
+
+                private static $config_name_sum = null;   // takes all the config to create the md5 of the file
+
+	// -------------------------
+
+
+
+	const CACHE_EXPIRE_TIME = 3600; // default cache expire time = hour
+
+
+
+	/**
+	 * Assign variable
+	 * eg. 	$t->assign('name','mickey');
+	 *
+	 * @param mixed $variable_name Name of template variable or associative array name/value
+	 * @param mixed $value value assigned to this variable. Not set if variable_name is an associative array
+	 */
+
+	function assign( $variable, $value = null ){
+		if( is_array( $variable ) )
+			$this->var += $variable;
+		else
+			$this->var[ $variable ] = $value;
+	}
+
+
+
+	/**
+	 * Draw the template
+	 * eg. 	$html = $tpl->draw( 'demo', TRUE ); // return template in string
+	 * or 	$tpl->draw( $tpl_name ); // echo the template
+	 *
+	 * @param string $tpl_name  template to load
+	 * @param boolean $return_string  true=return a string, false=echo the template
+	 * @return string
+	 */
+
+	function draw( $tpl_name, $return_string = false ){
+
+		try {
+			// compile the template if necessary and set the template filepath
+			$this->check_template( $tpl_name );
+		} catch (RainTpl_Exception $e) {
+			$output = $this->printDebug($e);
+			die($output);
+		}
+
+		// Cache is off and, return_string is false
+        // Rain just echo the template
+
+        if( !$this->cache && !$return_string ){
+            extract( $this->var );
+            include $this->tpl['compiled_filename'];
+            unset( $this->tpl );
+        }
+
+
+		// cache or return_string are enabled
+        // rain get the output buffer to save the output in the cache or to return it as string
+
+        else{
+
+            //----------------------
+            // get the output buffer
+            //----------------------
+                ob_start();
+                extract( $this->var );
+                include $this->tpl['compiled_filename'];
+                $raintpl_contents = ob_get_contents();
+                ob_end_clean();
+            //----------------------
+
+
+            // save the output in the cache
+            if( $this->cache )
+                file_put_contents( $this->tpl['cache_filename'], "<?php if(!class_exists('raintpl')){exit;}?>" . $raintpl_contents );
+
+            // free memory
+            unset( $this->tpl );
+
+            // return or print the template
+            if( $return_string ) return $raintpl_contents; else echo $raintpl_contents;
+
+        }
+
+	}
+
+
+
+
+	/**
+	 * If exists a valid cache for this template it returns the cache
+	 *
+	 * @param string $tpl_name Name of template (set the same of draw)
+	 * @param int $expiration_time Set after how many seconds the cache expire and must be regenerated
+	 * @return string it return the HTML or null if the cache must be recreated
+	 */
+
+	function cache( $tpl_name, $expire_time = self::CACHE_EXPIRE_TIME, $cache_id = null ){
+
+        // set the cache_id
+        $this->cache_id = $cache_id;
+
+		if( !$this->check_template( $tpl_name ) && file_exists( $this->tpl['cache_filename'] ) && ( time() - filemtime( $this->tpl['cache_filename'] ) < $expire_time ) )
+			return substr( file_get_contents( $this->tpl['cache_filename'] ), 43 );
+		else{
+			//delete the cache of the selected template
+            if (file_exists($this->tpl['cache_filename']))
+            unlink($this->tpl['cache_filename'] );
+			$this->cache = true;
+		}
+	}
+
+
+
+	/**
+	 * Configure the settings of RainTPL
+	 *
+	 */
+	static function configure( $setting, $value = null ){
+		if( is_array( $setting ) )
+			foreach( $setting as $key => $value )
+				self::configure( $key, $value );
+		else if( property_exists( __CLASS__, $setting ) ){
+			self::$$setting = $value;
+            self::$config_name_sum .= $value; // take trace of all config
+        }
+	}
+
+
+
+	// check if has to compile the template
+	// return true if the template has changed
+	private function check_template( $tpl_name ){
+
+		if( !isset($this->tpl['checked']) ){
+
+			$tpl_basename                       = basename( $tpl_name );														// template basename
+			$tpl_basedir                        = strpos($tpl_name,"/") ? dirname($tpl_name) . '/' : null;						// template basedirectory
+			$tpl_dir                            = self::$tpl_dir . $tpl_basedir;								// template directory
+			$this->tpl['tpl_filename']          = $tpl_dir . $tpl_basename . '.' . self::$tpl_ext;	// template filename
+			$temp_compiled_filename             = self::$cache_dir . $tpl_basename . "." . md5( $tpl_dir . self::$config_name_sum );
+			$this->tpl['compiled_filename']     = $temp_compiled_filename . '.php';	// cache filename
+			$this->tpl['cache_filename']        = $temp_compiled_filename . '.s_' . $this->cache_id . '.php';	// static cache filename
+
+			// if the template doesn't exsist throw an error
+			if( self::$check_template_update && !file_exists( $this->tpl['tpl_filename'] ) ){
+				$e = new RainTpl_NotFoundException( 'Template '. $tpl_basename .' not found!' );
+				throw $e->setTemplateFile($this->tpl['tpl_filename']);
+			}
+
+			// file doesn't exsist, or the template was updated, Rain will compile the template
+			if( !file_exists( $this->tpl['compiled_filename'] ) || ( self::$check_template_update && filemtime($this->tpl['compiled_filename']) < filemtime( $this->tpl['tpl_filename'] ) ) ){
+				$this->compileFile( $tpl_basename, $tpl_basedir, $this->tpl['tpl_filename'], self::$cache_dir, $this->tpl['compiled_filename'] );
+				return true;
+			}
+			$this->tpl['checked'] = true;
+		}
+	}
+
+
+	/**
+	* execute stripslaches() on the xml block. Invoqued by preg_replace_callback function below
+	* @access private
+	*/
+	private function xml_reSubstitution($capture) {
+    		return "<?php echo '<?xml ".stripslashes($capture[1])." ?>'; ?>";
+	} 
+
+	/**
+	 * Compile and write the compiled template file
+	 * @access private
+	 */
+	private function compileFile( $tpl_basename, $tpl_basedir, $tpl_filename, $cache_dir, $compiled_filename ){
+
+		//read template file
+		$this->tpl['source'] = $template_code = file_get_contents( $tpl_filename );
+
+		//xml substitution
+		$template_code = preg_replace( "/<\?xml(.*?)\?>/s", "##XML\\1XML##", $template_code );
+
+		//disable php tag
+		$template_code = str_replace( array("<?","?>"), array("&lt;?","?&gt;"), $template_code );
+
+		//xml re-substitution
+		$template_code = preg_replace_callback ( "/##XML(.*?)XML##/s", array($this, 'xml_reSubstitution'), $template_code ); 
+
+		//compile template
+		$template_compiled = "<?php if(!class_exists('raintpl')){exit;}?>" . $this->compileTemplate( $template_code, $tpl_basedir );
+		
+
+		// fix the php-eating-newline-after-closing-tag-problem
+		$template_compiled = str_replace( "?>\n", "?>\n\n", $template_compiled );
+
+		// create directories
+		if( !is_dir( $cache_dir ) )
+			mkdir( $cache_dir, 0755, true );
+
+		if( !is_writable( $cache_dir ) )
+			throw new RainTpl_Exception ('Cache directory ' . $cache_dir . 'doesn\'t have write permission. Set write permission or set RAINTPL_CHECK_TEMPLATE_UPDATE to false. More details on http://www.raintpl.com/Documentation/Documentation-for-PHP-developers/Configuration/');
+
+		//write compiled file
+		file_put_contents( $compiled_filename, $template_compiled );
+	}
+
+
+
+	/**
+	 * Compile template
+	 * @access private
+	 */
+	private function compileTemplate( $template_code, $tpl_basedir ){
+
+		//tag list
+		$tag_regexp = array( 	'loop'	 	=> '(\{loop(?: name){0,1}="\${0,1}[^"]*"\})',
+					'loop_close'	=> '(\{\/loop\})',
+					'if'		=> '(\{if(?: condition){0,1}="[^"]*"\})',
+					'elseif'	=> '(\{elseif(?: condition){0,1}="[^"]*"\})',
+					'else'		=> '(\{else\})',
+					'if_close'	=> '(\{\/if\})',
+					'function'	=> '(\{function="[^"]*"\})',
+					'noparse'	=> '(\{noparse\})',
+					'noparse_close' => '(\{\/noparse\})',
+					'ignore'	=> '(\{ignore\})',
+					'ignore_close'	=> '(\{\/ignore\})',
+					'include'	=> '(\{include="[^"]*"(?: cache="[^"]*")?\})',
+					'template_info'	=> '(\{\$template_info\})',
+							);
+
+		$tag_regexp = "/" . join( "|", $tag_regexp ) . "/";
+
+		//split the code with the tags regexp
+		$template_code = preg_split ( $tag_regexp, $template_code, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
+
+		//path replace (src of img, background and href of link)
+		$template_code = $this->path_replace( $template_code, $tpl_basedir );
+
+		//compile the code
+		$compiled_code = $this->compileCode( $template_code );
+
+		//return the compiled code
+		return $compiled_code;
+
+	}
+
+
+
+	/**
+	 * Compile the code
+	 * @access private
+	 */
+	private function compileCode( $parsed_code ){
+
+		//variables initialization
+		$compiled_code = $open_if = $comment_is_open = $ignore_is_open = null;
+        $loop_level = 0;
+
+
+	 	//read all parsed code
+	 	while( $html = array_shift( $parsed_code ) ){
+
+	 		//close ignore tag
+			if( !$comment_is_open && strpos( $html, '{/ignore}' ) !== FALSE )
+	 			$ignore_is_open = false;
+
+	 		//code between tag ignore id deleted
+	 		elseif( $ignore_is_open ){
+	 			//ignore the code
+	 		}
+
+	 		//close no parse tag
+			elseif( strpos( $html, '{/noparse}' ) !== FALSE )
+	 			$comment_is_open = false;
+
+	 		//code between tag noparse is not compiled
+	 		elseif( $comment_is_open )
+ 				$compiled_code .= $html;
+
+	 		//ignore
+			elseif( strpos( $html, '{ignore}' ) !== FALSE )
+	 			$ignore_is_open = true;
+
+	 		//noparse
+	 		elseif( strpos( $html, '{noparse}' ) !== FALSE )
+	 			$comment_is_open = true;
+
+			//include tag
+			elseif( preg_match( '/(?:\{include="([^"]*)"(?: cache="([^"]*)"){0,1}\})/', $html, $code ) ){
+
+				//variables substitution
+				$include_var = $this->var_replace( $code[ 1 ], $left_delimiter = null, $right_delimiter = null, $php_left_delimiter = '".' , $php_right_delimiter = '."', $loop_level );
+
+				// if the cache is active
+				if( isset($code[ 2 ]) )
+					//dynamic include
+					$compiled_code .= '<?php $tpl = new RainTPL;' .
+								 'if( $cache = $tpl->cache( $template = basename("'.$include_var.'") ) )' .
+								 '	echo $cache;' .
+								 'else{ ' .
+								 '$tpl_dir_temp = self::$tpl_dir;' .
+								 '$tpl->assign( $this->var );' .
+								 ( !$loop_level ? null : '$tpl->assign( "key", $key'.$loop_level.' ); $tpl->assign( "value", $value'.$loop_level.' );' ).
+								 '$tpl->draw( dirname("'.$include_var.'") . ( substr("'.$include_var.'",-1,1) != "/" ? "/" : "" ) . $template );'.
+								 '}' .
+								 '?>';
+				else
+					//dynamic include
+					$compiled_code .= '<?php $tpl = new RainTPL;' .
+								 '$tpl_dir_temp = self::$tpl_dir;' .
+								 '$tpl->assign( $this->var );' .
+								 ( !$loop_level ? null : '$tpl->assign( "key", $key'.$loop_level.' ); $tpl->assign( "value", $value'.$loop_level.' );' ).
+								 '$tpl->draw( dirname("'.$include_var.'") . ( substr("'.$include_var.'",-1,1) != "/" ? "/" : "" ) . basename("'.$include_var.'") );'.
+								 '?>';
+
+			}
+
+	 		//loop
+			elseif( preg_match( '/\{loop(?: name){0,1}="\${0,1}([^"]*)"\}/', $html, $code ) ){
+
+	 			//increase the loop counter
+	 			$loop_level++;
+
+				//replace the variable in the loop
+				$var = $this->var_replace( '$' . $code[ 1 ], $tag_left_delimiter=null, $tag_right_delimiter=null, $php_left_delimiter=null, $php_right_delimiter=null, $loop_level-1 );
+
+				//loop variables
+				$counter = "\$counter$loop_level";       // count iteration
+				$key = "\$key$loop_level";               // key
+				$value = "\$value$loop_level";           // value
+
+				//loop code
+				$compiled_code .=  "<?php $counter=-1; if( isset($var) && is_array($var) && sizeof($var) ) foreach( $var as $key => $value ){ $counter++; ?>";
+
+			}
+
+			//close loop tag
+			elseif( strpos( $html, '{/loop}' ) !== FALSE ) {
+
+				//iterator
+				$counter = "\$counter$loop_level";
+
+				//decrease the loop counter
+				$loop_level--;
+
+				//close loop code
+				$compiled_code .=  "<?php } ?>";
+
+			}
+
+			//if
+			elseif( preg_match( '/\{if(?: condition){0,1}="([^"]*)"\}/', $html, $code ) ){
+
+				//increase open if counter (for intendation)
+				$open_if++;
+
+				//tag
+				$tag = $code[ 0 ];
+
+				//condition attribute
+				$condition = $code[ 1 ];
+
+				// check if there's any function disabled by black_list
+				$this->function_check( $tag );
+
+				//variable substitution into condition (no delimiter into the condition)
+				$parsed_condition = $this->var_replace( $condition, $tag_left_delimiter = null, $tag_right_delimiter = null, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level );
+
+				//if code
+				$compiled_code .=   "<?php if( $parsed_condition ){ ?>";
+
+			}
+
+			//elseif
+			elseif( preg_match( '/\{elseif(?: condition){0,1}="([^"]*)"\}/', $html, $code ) ){
+
+				//tag
+				$tag = $code[ 0 ];
+
+				//condition attribute
+				$condition = $code[ 1 ];
+
+				//variable substitution into condition (no delimiter into the condition)
+				$parsed_condition = $this->var_replace( $condition, $tag_left_delimiter = null, $tag_right_delimiter = null, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level );
+
+				//elseif code
+				$compiled_code .=   "<?php }elseif( $parsed_condition ){ ?>";
+			}
+
+			//else
+			elseif( strpos( $html, '{else}' ) !== FALSE ) {
+
+				//else code
+				$compiled_code .=   '<?php }else{ ?>';
+
+			}
+
+			//close if tag
+			elseif( strpos( $html, '{/if}' ) !== FALSE ) {
+
+				//decrease if counter
+				$open_if--;
+
+				// close if code
+				$compiled_code .=   '<?php } ?>';
+
+			}
+
+			//function
+			elseif( preg_match( '/\{function="([^(]*)(\([^)]*\)){0,1}"\}/', $html, $code ) ){
+
+				//tag
+				$tag = $code[ 0 ];
+
+				//function
+				$function = $code[ 1 ];
+
+				// check if there's any function disabled by black_list
+				$this->function_check( $tag );
+
+				//parse the parameters
+				$parsed_param = isset( $code[2] ) ? $this->var_replace( $code[2], $tag_left_delimiter = null, $tag_right_delimiter = null, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level ) : '()';
+
+				//if code
+				$compiled_code .=   "<?php echo {$function}{$parsed_param}; ?>";
+			}
+
+			// show all vars
+			elseif ( strpos( $html, '{$template_info}' ) !== FALSE ) {
+
+				//tag
+				$tag  = '{$template_info}';
+
+				//if code
+				$compiled_code .=   '<?php echo "<pre>"; print_r( $this->var ); echo "</pre>"; ?>';
+			}
+
+
+			//all html code
+			else{
+
+				//variables substitution (es. {$title})
+				$html = $this->var_replace( $html, $left_delimiter = '\{', $right_delimiter = '\}', $php_left_delimiter = '<?php ', $php_right_delimiter = ';?>', $loop_level, $echo = true );
+				//const substitution (es. {#CONST#})
+				$html = $this->const_replace( $html, $left_delimiter = '\{', $right_delimiter = '\}', $php_left_delimiter = '<?php ', $php_right_delimiter = ';?>', $loop_level, $echo = true );
+				//functions substitution (es. {"string"|functions})
+				$compiled_code .= $this->func_replace( $html, $left_delimiter = '\{', $right_delimiter = '\}', $php_left_delimiter = '<?php ', $php_right_delimiter = ';?>', $loop_level, $echo = true );
+			}
+		}
+
+		if( $open_if > 0 ) {
+			$e = new RainTpl_SyntaxException('Error! You need to close an {if} tag in ' . $this->tpl['tpl_filename'] . ' template');
+			throw $e->setTemplateFile($this->tpl['tpl_filename']);
+		}
+		return $compiled_code;
+	}
+
+
+
+	/**
+	 * replace the path of image src, link href and a href.
+	 * url => template_dir/url
+	 * url# => url
+	 * http://url => http://url
+	 *
+	 * @param string $html
+	 * @return string html sostituito
+	 */
+	private function path_replace( $html, $tpl_basedir ){
+
+		if( self::$path_replace ){
+
+                        // reduce the path
+                        $path = preg_replace('/\w+\/\.\.\//', '', self::$base_url . self::$tpl_dir . $tpl_basedir );
+
+			$exp = $sub = array();
+
+			if( in_array( "img", self::$path_replace_list ) ){
+				$exp = array( '/<img(.*?)src=(?:")(http|https)\:\/\/([^"]+?)(?:")/i', '/<img(.*?)src=(?:")([^"]+?)#(?:")/i', '/<img(.*?)src="(.*?)"/', '/<img(.*?)src=(?:\@)([^"]+?)(?:\@)/i' );
+				$sub = array( '<img$1src=@$2://$3@', '<img$1src=@$2@', '<img$1src="' . self::$base_url . self::$tpl_dir . $tpl_basedir . '$2"', '<img$1src="$2"' );
+			}
+
+			if( in_array( "script", self::$path_replace_list ) ){
+				$exp = array_merge( $exp , array( '/<script(.*?)src=(?:")(http|https)\:\/\/([^"]+?)(?:")/i', '/<script(.*?)src=(?:")([^"]+?)#(?:")/i', '/<script(.*?)src="(.*?)"/', '/<script(.*?)src=(?:\@)([^"]+?)(?:\@)/i' ) );
+				$sub = array_merge( $sub , array( '<script$1src=@$2://$3@', '<script$1src=@$2@', '<script$1src="' . self::$base_url . self::$tpl_dir . $tpl_basedir . '$2"', '<script$1src="$2"' ) );
+			}
+
+			if( in_array( "link", self::$path_replace_list ) ){
+				$exp = array_merge( $exp , array( '/<link(.*?)href=(?:")(http|https)\:\/\/([^"]+?)(?:")/i', '/<link(.*?)href=(?:")([^"]+?)#(?:")/i', '/<link(.*?)href="(.*?)"/', '/<link(.*?)href=(?:\@)([^"]+?)(?:\@)/i' ) );
+				$sub = array_merge( $sub , array( '<link$1href=@$2://$3@', '<link$1href=@$2@' , '<link$1href="' . self::$base_url . self::$tpl_dir . $tpl_basedir . '$2"', '<link$1href="$2"' ) );
+			}
+
+			if( in_array( "a", self::$path_replace_list ) ){
+				$exp = array_merge( $exp , array( '/<a(.*?)href=(?:")(http|https)\:\/\/([^"]+?)(?:")/i', '/<a(.*?)href="(.*?)"/', '/<a(.*?)href=(?:\@)([^"]+?)(?:\@)/i'  ) );
+				$sub = array_merge( $sub , array( '<a$1href=@$2://$3@', '<a$1href="' . self::$base_url . '$2"', '<a$1href="$2"' ) );
+			}
+
+			if( in_array( "input", self::$path_replace_list ) ){
+				$exp = array_merge( $exp , array( '/<input(.*?)src=(?:")(http|https)\:\/\/([^"]+?)(?:")/i', '/<input(.*?)src=(?:")([^"]+?)#(?:")/i', '/<input(.*?)src="(.*?)"/', '/<input(.*?)src=(?:\@)([^"]+?)(?:\@)/i' ) );
+				$sub = array_merge( $sub , array( '<input$1src=@$2://$3@', '<input$1src=@$2@', '<input$1src="' . self::$base_url . self::$tpl_dir . $tpl_basedir . '$2"', '<input$1src="$2"' ) );
+			}
+
+			return preg_replace( $exp, $sub, $html );
+
+		}
+		else
+			return $html;
+
+	}
+
+
+
+
+
+	// replace const
+	function const_replace( $html, $tag_left_delimiter, $tag_right_delimiter, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level = null, $echo = null ){
+		// const
+		return preg_replace( '/\{\#(\w+)\#{0,1}\}/', $php_left_delimiter . ( $echo ? " echo " : null ) . '\\1' . $php_right_delimiter, $html );
+	}
+
+
+
+	// replace functions/modifiers on constants and strings
+	function func_replace( $html, $tag_left_delimiter, $tag_right_delimiter, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level = null, $echo = null ){
+
+		preg_match_all( '/' . '\{\#{0,1}(\"{0,1}.*?\"{0,1})(\|\w.*?)\#{0,1}\}' . '/', $html, $matches );
+
+		for( $i=0, $n=count($matches[0]); $i<$n; $i++ ){
+
+			//complete tag ex: {$news.title|substr:0,100}
+			$tag = $matches[ 0 ][ $i ];
+
+			//variable name ex: news.title
+			$var = $matches[ 1 ][ $i ];
+
+			//function and parameters associate to the variable ex: substr:0,100
+			$extra_var = $matches[ 2 ][ $i ];
+
+			// check if there's any function disabled by black_list
+			$this->function_check( $tag );
+
+			$extra_var = $this->var_replace( $extra_var, null, null, null, null, $loop_level );
+            
+
+			// check if there's an operator = in the variable tags, if there's this is an initialization so it will not output any value
+			$is_init_variable = preg_match( "/^(\s*?)\=[^=](.*?)$/", $extra_var );
+
+			//function associate to variable
+			$function_var = ( $extra_var and $extra_var[0] == '|') ? substr( $extra_var, 1 ) : null;
+
+			//variable path split array (ex. $news.title o $news[title]) or object (ex. $news->title)
+			$temp = preg_split( "/\.|\[|\-\>/", $var );
+
+			//variable name
+			$var_name = $temp[ 0 ];
+
+			//variable path
+			$variable_path = substr( $var, strlen( $var_name ) );
+
+			//parentesis transform [ e ] in [" e in "]
+			$variable_path = str_replace( '[', '["', $variable_path );
+			$variable_path = str_replace( ']', '"]', $variable_path );
+
+			//transform .$variable in ["$variable"]
+			$variable_path = preg_replace('/\.\$(\w+)/', '["$\\1"]', $variable_path );
+
+			//transform [variable] in ["variable"]
+			$variable_path = preg_replace('/\.(\w+)/', '["\\1"]', $variable_path );
+
+			//if there's a function
+			if( $function_var ){
+                
+                // check if there's a function or a static method and separate, function by parameters
+				$function_var = str_replace("::", "@double_dot@", $function_var );
+
+                // get the position of the first :
+                if( $dot_position = strpos( $function_var, ":" ) ){
+
+                    // get the function and the parameters
+                    $function = substr( $function_var, 0, $dot_position );
+                    $params = substr( $function_var, $dot_position+1 );
+
+                }
+                else{
+
+                    //get the function
+                    $function = str_replace( "@double_dot@", "::", $function_var );
+                    $params = null;
+
+                }
+
+                // replace back the @double_dot@ with ::
+                $function = str_replace( "@double_dot@", "::", $function );
+                $params = str_replace( "@double_dot@", "::", $params );
+
+
+			}
+			else
+				$function = $params = null;
+
+			$php_var = $var_name . $variable_path;
+
+			// compile the variable for php
+			if( isset( $function ) ){
+				if( $php_var )
+					$php_var = $php_left_delimiter . ( !$is_init_variable && $echo ? 'echo ' : null ) . ( $params ? "( $function( $php_var, $params ) )" : "$function( $php_var )" ) . $php_right_delimiter;
+				else
+					$php_var = $php_left_delimiter . ( !$is_init_variable && $echo ? 'echo ' : null ) . ( $params ? "( $function( $params ) )" : "$function()" ) . $php_right_delimiter;
+			}
+			else
+				$php_var = $php_left_delimiter . ( !$is_init_variable && $echo ? 'echo ' : null ) . $php_var . $extra_var . $php_right_delimiter;
+
+			$html = str_replace( $tag, $php_var, $html );
+
+		}
+
+		return $html;
+
+	}
+
+
+
+	function var_replace( $html, $tag_left_delimiter, $tag_right_delimiter, $php_left_delimiter = null, $php_right_delimiter = null, $loop_level = null, $echo = null ){
+
+		//all variables
+		if( preg_match_all( '/' . $tag_left_delimiter . '\$(\w+(?:\.\${0,1}[A-Za-z0-9_]+)*(?:(?:\[\${0,1}[A-Za-z0-9_]+\])|(?:\-\>\${0,1}[A-Za-z0-9_]+))*)(.*?)' . $tag_right_delimiter . '/', $html, $matches ) ){
+
+                    for( $parsed=array(), $i=0, $n=count($matches[0]); $i<$n; $i++ )
+                        $parsed[$matches[0][$i]] = array('var'=>$matches[1][$i],'extra_var'=>$matches[2][$i]);
+
+                    foreach( $parsed as $tag => $array ){
+
+                            //variable name ex: news.title
+                            $var = $array['var'];
+
+                            //function and parameters associate to the variable ex: substr:0,100
+                            $extra_var = $array['extra_var'];
+
+                            // check if there's any function disabled by black_list
+                            $this->function_check( $tag );
+
+                            $extra_var = $this->var_replace( $extra_var, null, null, null, null, $loop_level );
+
+                            // check if there's an operator = in the variable tags, if there's this is an initialization so it will not output any value
+                            $is_init_variable = preg_match( "/^(\s*?)\=[^=](.*?)$/", $extra_var );
+                            
+                            //function associate to variable
+                            $function_var = ( $extra_var and $extra_var[0] == '|') ? substr( $extra_var, 1 ) : null;
+
+                            //variable path split array (ex. $news.title o $news[title]) or object (ex. $news->title)
+                            $temp = preg_split( "/\.|\[|\-\>/", $var );
+
+                            //variable name
+                            $var_name = $temp[ 0 ];
+
+                            //variable path
+                            $variable_path = substr( $var, strlen( $var_name ) );
+
+                            //parentesis transform [ e ] in [" e in "]
+                            $variable_path = str_replace( '[', '["', $variable_path );
+                            $variable_path = str_replace( ']', '"]', $variable_path );
+
+                            //transform .$variable in ["$variable"] and .variable in ["variable"]
+                            $variable_path = preg_replace('/\.(\${0,1}\w+)/', '["\\1"]', $variable_path );
+                            
+                            // if is an assignment also assign the variable to $this->var['value']
+                            if( $is_init_variable )
+                                $extra_var = "=\$this->var['{$var_name}']{$variable_path}" . $extra_var;
+
+                                
+
+                            //if there's a function
+                            if( $function_var ){
+                                
+                                    // check if there's a function or a static method and separate, function by parameters
+                                    $function_var = str_replace("::", "@double_dot@", $function_var );
+
+
+                                    // get the position of the first :
+                                    if( $dot_position = strpos( $function_var, ":" ) ){
+
+                                        // get the function and the parameters
+                                        $function = substr( $function_var, 0, $dot_position );
+                                        $params = substr( $function_var, $dot_position+1 );
+
+                                    }
+                                    else{
+
+                                        //get the function
+                                        $function = str_replace( "@double_dot@", "::", $function_var );
+                                        $params = null;
+
+                                    }
+
+                                    // replace back the @double_dot@ with ::
+                                    $function = str_replace( "@double_dot@", "::", $function );
+                                    $params = str_replace( "@double_dot@", "::", $params );
+                            }
+                            else
+                                    $function = $params = null;
+
+                            //if it is inside a loop
+                            if( $loop_level ){
+                                    //verify the variable name
+                                    if( $var_name == 'key' )
+                                            $php_var = '$key' . $loop_level;
+                                    elseif( $var_name == 'value' )
+                                            $php_var = '$value' . $loop_level . $variable_path;
+                                    elseif( $var_name == 'counter' )
+                                            $php_var = '$counter' . $loop_level;
+                                    else
+                                            $php_var = '$' . $var_name . $variable_path;
+                            }else
+                                    $php_var = '$' . $var_name . $variable_path;
+                            
+                            // compile the variable for php
+                            if( isset( $function ) )
+                                    $php_var = $php_left_delimiter . ( !$is_init_variable && $echo ? 'echo ' : null ) . ( $params ? "( $function( $php_var, $params ) )" : "$function( $php_var )" ) . $php_right_delimiter;
+                            else
+                                    $php_var = $php_left_delimiter . ( !$is_init_variable && $echo ? 'echo ' : null ) . $php_var . $extra_var . $php_right_delimiter;
+                            
+                            $html = str_replace( $tag, $php_var, $html );
+
+
+                    }
+                }
+
+		return $html;
+	}
+
+
+
+	/**
+	 * Check if function is in black list (sandbox)
+	 *
+	 * @param string $code
+	 * @param string $tag
+	 */
+	private function function_check( $code ){
+
+		$preg = '#(\W|\s)' . implode( '(\W|\s)|(\W|\s)', self::$black_list ) . '(\W|\s)#';
+
+		// check if the function is in the black list (or not in white list)
+		if( count(self::$black_list) && preg_match( $preg, $code, $match ) ){
+
+			// find the line of the error
+			$line = 0;
+			$rows=explode("\n",$this->tpl['source']);
+			while( !strpos($rows[$line],$code) )
+				$line++;
+
+			// stop the execution of the script
+			$e = new RainTpl_SyntaxException('Unallowed syntax in ' . $this->tpl['tpl_filename'] . ' template');
+			throw $e->setTemplateFile($this->tpl['tpl_filename'])
+				->setTag($code)
+				->setTemplateLine($line);
+		}
+
+	}
+
+	/**
+	 * Prints debug info about exception or passes it further if debug is disabled.
+	 *
+	 * @param RainTpl_Exception $e
+	 * @return string
+	 */
+	private function printDebug(RainTpl_Exception $e){
+		if (!self::$debug) {
+			throw $e;
+		}
+		$output = sprintf('<h2>Exception: %s</h2><h3>%s</h3><p>template: %s</p>',
+			get_class($e),
+			$e->getMessage(),
+			$e->getTemplateFile()
+		);
+		if ($e instanceof RainTpl_SyntaxException) {
+			if (null != $e->getTemplateLine()) {
+				$output .= '<p>line: ' . $e->getTemplateLine() . '</p>';
+			}
+			if (null != $e->getTag()) {
+				$output .= '<p>in tag: ' . htmlspecialchars($e->getTag()) . '</p>';
+			}
+			if (null != $e->getTemplateLine() && null != $e->getTag()) {
+				$rows=explode("\n",  htmlspecialchars($this->tpl['source']));
+				$rows[$e->getTemplateLine()] = '<font color=red>' . $rows[$e->getTemplateLine()] . '</font>';
+				$output .= '<h3>template code</h3>' . implode('<br />', $rows) . '</pre>';
+			}
+		}
+		$output .= sprintf('<h3>trace</h3><p>In %s on line %d</p><pre>%s</pre>',
+			$e->getFile(), $e->getLine(),
+			nl2br(htmlspecialchars($e->getTraceAsString()))
+		);
+		return $output;
+	}
+}
+
+
+/**
+ * Basic Rain tpl exception.
+ */
+class RainTpl_Exception extends Exception{
+	/**
+	 * Path of template file with error.
+	 */
+	private $templateFile = '';
+
+	/**
+	 * Returns path of template file with error.
+	 *
+	 * @return string
+	 */
+	public function getTemplateFile()
+	{
+		return $this->templateFile;
+	}
+
+	/**
+	 * Sets path of template file with error.
+	 *
+	 * @param string $templateFile
+	 * @return RainTpl_Exception
+	 */
+	public function setTemplateFile($templateFile)
+	{
+		$this->templateFile = (string) $templateFile;
+		return $this;
+	}
+}
+
+/**
+ * Exception thrown when template file does not exists.
+ */
+class RainTpl_NotFoundException extends RainTpl_Exception{
+}
+
+/**
+ * Exception thrown when syntax error occurs.
+ */
+class RainTpl_SyntaxException extends RainTpl_Exception{
+	/**
+	 * Line in template file where error has occured.
+	 *
+	 * @var int | null
+	 */
+	private $templateLine = null;
+
+	/**
+	 * Tag which caused an error.
+	 *
+	 * @var string | null
+	 */
+	private $tag = null;
+
+	/**
+	 * Returns line in template file where error has occured
+	 * or null if line is not defined.
+	 *
+	 * @return int | null
+	 */
+	public function getTemplateLine()
+	{
+		return $this->templateLine;
+	}
+
+	/**
+	 * Sets  line in template file where error has occured.
+	 *
+	 * @param int $templateLine
+	 * @return RainTpl_SyntaxException
+	 */
+	public function setTemplateLine($templateLine)
+	{
+		$this->templateLine = (int) $templateLine;
+		return $this;
+	}
+
+	/**
+	 * Returns tag which caused an error.
+	 *
+	 * @return string
+	 */
+	public function getTag()
+	{
+		return $this->tag;
+	}
+
+	/**
+	 * Sets tag which caused an error.
+	 *
+	 * @param string $tag
+	 * @return RainTpl_SyntaxException
+	 */
+	public function setTag($tag)
+	{
+		$this->tag = (string) $tag;
+		return $this;
+	}
+}
+
+?>
\ No newline at end of file
-- 
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