template.class.php

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<?php
class template {

        protected $_registry;
        
        protected $_path;
        
        protected $_mdl_url_content;
        
        protected $_modules;

        function __construct($tpl_path) {
        
                $this->_registry = registry::instance();
                $this->_path = $tpl_path;
        }

        public function getPath() {

                return $this->_path;

        }
        
        public function parse() {
                
                if(!is_readable($this->getPath()))
                        Error::syserrorMessage('template', 'parse', sprintf(__("TplNotFound"), $this->getTplPath()), __LINE__);

                $tplContent = file_get_contents($this->getPath());

                /* charge/exec url module-method content */
                if(preg_match("#\{module:url_module method:url_method\}#", $tplContent))
                        $this->_mdl_url_content = $this->_registry->router->loader(null);
                
                /* precharge modules methods so that registry properties are setted*/
                $regexp = "/\{module:(\w+) method:(\w+)(\sparams:(\w+))?\}/";
                $buffer = preg_replace_callback($regexp, array($this, 'chargeModules'), $tplContent);

                /* parse template sobstituting variables charged in the registry */
                $regexp = "/\{([A-Z_]+)\}/";
                $buffer = preg_replace_callback($regexp, array($this, 'parseVariables'), $buffer);

                /* insert modules methods contents */   
                $regexp = "/\{module:(\w+) method:(\w+)(\sparams:(\w+))?\}/";
                $buffer = preg_replace_callback($regexp, array($this, 'parseModules'), $buffer);

                return $buffer;
        
        }

        protected function parseVariables($matches) {
                
                $m = $matches[1];

                if($m == 'TITLE') return $this->_registry->title;
                elseif($m == 'DESCRIPTION') return $this->_registry->description;
                elseif($m == 'LANGUAGE') return $this->_registry->language;
                elseif($m == 'KEYWORDS') return $this->_registry->keywords;
                elseif($m == 'FAVICON') return $this->_registry->favicon;
                elseif($m == 'META') {
                        $r = '';
                        foreach($this->_registry->meta as $meta) { 
                                $r .= "<meta"
                                        .(isset($meta['name']) ? " name=\"".$meta['name']."\"" : '')
                                        .(isset($meta['property']) ? " property=\"".$meta['property']."\"" : '')
                                        ." content=\"".$meta['content']."\" />\n";
                        }
                        return $r;
                }
                elseif($m == 'CSS') {
                        $r = '';
                        foreach(array_unique($this->_registry->css) as $css) 
                                $r .= "<link rel=\"stylesheet\" href=\"$css\" type=\"text/css\" />\n";
                        return $r;
                }
                elseif($m == 'HEAD_LINKS') {
                        $r = '';
                        foreach($this->_registry->head_links as $hlink) { 
                                $r .= "<link"
                                        .(isset($hlink['rel']) ? " rel=\"".$hlink['rel']."\"" : '')
                                        .(isset($hlink['type']) ? " type=\"".$hlink['type']."\"" : '')
                                        .(isset($hlink['title']) ? " title=\"".$hlink['title']."\"" : '')
                                        ." href=\"".$hlink['href']."\" />\n";
                        }
                        return $r;
                }
                elseif($m == 'JAVASCRIPT') {
                        $r = '';
                        foreach(array_unique($this->_registry->js) as $js) 
                                $r .= "<script type=\"text/javascript\" src=\"$js\"></script>\n";
                        return $r;
                }

                elseif($m == 'ERRORS') return document::errorMessages();

        }

        protected function parseModules($matches) {
                
                return ($matches[1]=='url_module' && $matches[2]=='url_method')
                        ? $this->_mdl_url_content
                        : $this->_modules[$matches[1]."-".$matches[2]."-".(isset($matches[4]) ? $matches[4] : '')];


        }

        protected function chargeModules($matches) {
                
                $params = isset($matches[4]) ? $matches[4] : null;
                if(!($matches[1]=='url_module' && $matches[2]=='url_method')) 
                        $this->_modules[$matches[1]."-".$matches[2]."-".$params] = $this->_registry->router->loader(array("module"=>$matches[1], "method"=>$matches[2], "params"=>$params));
                return $matches[0];

        }

}

?>