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| 1 | <?php | |
| 2 | /* | |
| 3 | * Project: Nebula Templating Engine | |
| 4 | * By: Mansoor Sayed | |
| 5 | * | |
| 6 | * | |
| 7 | */ | |
| 8 | if (!defined('NEBULA_DIR'))
| |
| 9 | define('NEBULA_DIR', dirname(__FILE__) . DIRECTORY_SEPARATOR);
| |
| 10 | if(!defined('PHP'))
| |
| 11 | define('PHP', ".php");
| |
| 12 | ||
| 13 | class Nebula | |
| 14 | {
| |
| 15 | var $LEFT_DELIMITER = '{-'; //Opening delimiter
| |
| 16 | var $RIGHT_DELIMITER = '-}'; //Opening delimiter | |
| 17 | var $ERROR_REPORT = true; | |
| 18 | var $CACHE = true; //enable/disable caching | |
| 19 | var $CACHE_DIR = 'Nebula_cache/';// relitive to the php file calling this class's location | |
| 20 | var $PLUGIN_DIR = 'Nebula_plugin/'; | |
| 21 | var $TEMPLATE_DIR = 'template/'; | |
| 22 | var $PLUGIN_SYNTX = 'plugin.';//Nebula_plugin_name() | |
| 23 | var $PLUGIN_FUNC_STNX = 'Nebula_plugin_'; //sintax for the main function of the plugin | |
| 24 | var $CACHE_FILE_SNTX = 'Nebula_cache.';//Nebula_cache_pagename() | |
| 25 | ||
| 26 | /* END OF CONFIG */ | |
| 27 | ||
| 28 | var $CONTLIST = array(); | |
| 29 | var $PLUGINS = array(); | |
| 30 | var $CONTROLS = array(); | |
| 31 | var $CURRPAGE = ''; // for the use of any plugin | |
| 32 | protected static $erroflag = false; | |
| 33 | protected static $pagerro = array(); | |
| 34 | var $CACHEINCLUDE = array(); | |
| 35 | ||
| 36 | function start(){
| |
| 37 | if(count($this->CONTLIST) == 0) //Checking to see if there is any content. | |
| 38 | $this->_reperro("Error! There is no content to display!");
| |
| 39 | $curr_file = $this->CACHE_DIR .$this->CACHE_FILE_SNTX .$this->CURRPAGE .PHP; | |
| 40 | if($this->CACHE === true && file_exists($curr_file) == true) | |
| 41 | include_once($curr_file); | |
| 42 | else{
| |
| 43 | $this->_load_plugins(); | |
| 44 | $content = $this->_replace($this->_merge(array_reverse($this->CONTLIST))); | |
| 45 | if ($this->ERROR_REPORT == true) | |
| 46 | foreach(Nebula::$pagerro as $erro) | |
| 47 | $content = $erro . $content; | |
| 48 | $fh = fopen($curr_file, 'w'); | |
| 49 | fwrite($fh, $content); | |
| 50 | fclose($fh); | |
| 51 | include_once($curr_file); | |
| 52 | if($this->CACHE === false) | |
| 53 | unlink($curr_file); | |
| 54 | } | |
| 55 | } | |
| 56 | function display($content){
| |
| 57 | // will not import a file!! | |
| 58 | $this->CONTLIST[] = $content; | |
| 59 | } | |
| 60 | function display_file($file){// import a file as page content
| |
| 61 | if (file_exists($file)) | |
| 62 | {
| |
| 63 | $this->CONTLIST[] = file_get_contents($file); | |
| 64 | } | |
| 65 | else | |
| 66 | $this->_reperro("Error! The file '" .$file ."' was not found!");
| |
| 67 | } | |
| 68 | function _merge($parts){
| |
| 69 | $content = ''; | |
| 70 | foreach ($parts as $peep) | |
| 71 | $content .= $peep; | |
| 72 | return $content; | |
| 73 | } | |
| 74 | function _load_plugins(){// also, as of now, prepares the variable array list
| |
| 75 | if ($handle = opendir($this->PLUGIN_DIR)){
| |
| 76 | while (false !== ($file = readdir($handle))){
| |
| 77 | if(false !== strstr($file, $this->PLUGIN_SYNTX)){
| |
| 78 | $prt = explode('.', $file);
| |
| 79 | $this->PLUGINS[$prt[1]] = $file; | |
| 80 | } | |
| 81 | } | |
| 82 | closedir($handle); | |
| 83 | } | |
| 84 | } | |
| 85 | function set_controls($controls){
| |
| 86 | $this->CONTROLS[] = $controls; | |
| 87 | } | |
| 88 | function cache($pram = true){
| |
| 89 | $this->CACHE = $pram; | |
| 90 | } | |
| 91 | function set_currpage($iden){
| |
| 92 | $this->CURRPAGE = $iden; | |
| 93 | } | |
| 94 | function clearCache(){
| |
| 95 | if ($handle = opendir($this->CACHE_DIR)){
| |
| 96 | while (false !== ($file = readdir($handle))){
| |
| 97 | if(false !== strstr($file, $this->CACHE_FILE_SNTX)){
| |
| 98 | if(!unlink($this->CACHE_DIR .$file)) | |
| 99 | $this->_reperro("Error! Cannot delete cache files \"" .$this->CACHE_DIR .$file ."\"<br/>");
| |
| 100 | } | |
| 101 | } | |
| 102 | closedir($handle); | |
| 103 | } | |
| 104 | else | |
| 105 | $this->_reperro("Error! Can't open Plugin directory! \"" .$this->CACHE_DIR ."\" Do you have permission? Does it exist?");
| |
| 106 | } | |
| 107 | function clearPageCache($page){
| |
| 108 | unlink($this->CACHE_DIR .$this->CACHE_FILE_SNTX .$page .PHP); | |
| 109 | } | |
| 110 | function _reperro($erro){
| |
| 111 | Nebula::$erroflag = true; | |
| 112 | Nebula::$pagerro[] = $erro . "<br/>"; | |
| 113 | } | |
| 114 | function _replace($content) {// this will take an array of "list" of conditions (boolean) to be tested in the template
| |
| 115 | $controls = array(); | |
| 116 | $results = array(); | |
| 117 | $subpat = "\s*IF\s*([A-Za-z0-9_]+)\s*(\>|\<|\=)\s*(\d|'true'|'false'|[A-Za-z0-9_]+)\s*DO\s*'(.*?)'\s*ELSE\s*'(.*?)'\s*"; | |
| 118 | $pattern = '`' .$this->LEFT_DELIMITER ."\s*" .$subpat ."\s*" .$this->RIGHT_DELIMITER .'`i'; | |
| 119 | $count = preg_match_all($pattern, $content, $results); | |
| 120 | foreach ($this->PLUGINS as $iden => $fileName){
| |
| 121 | $pattern2 = '`' .$this->LEFT_DELIMITER .'\s*' .$iden .'\s*' .$this->RIGHT_DELIMITER .'`i'; | |
| 122 | $replace2 = "' . " .$this->PLUGIN_SYNTX .$iden ."() . '"; | |
| 123 | for ($i = 0; $i < $count; $i++){
| |
| 124 | $results[4][$i] = preg_replace($pattern2, $replace2, $results[4][$i]); | |
| 125 | $results[5][$i] = preg_replace($pattern2, $replace2, $results[5][$i]); | |
| 126 | } | |
| 127 | } | |
| 128 | for ($i = 0; $i<$count; $i++){ // Making sure that there are no php syntax errors at runtime
| |
| 129 | switch ($results[2][$i]) | |
| 130 | {
| |
| 131 | case '<': | |
| 132 | $op = '<'; | |
| 133 | break; | |
| 134 | case '>': | |
| 135 | $op = '>'; | |
| 136 | break; | |
| 137 | case '=': | |
| 138 | $op = '=='; | |
| 139 | break; | |
| 140 | default:$op = '==';// for idk erro avoidence | |
| 141 | $this->_reperro("Invalid Operator!");
| |
| 142 | break; | |
| 143 | } | |
| 144 | if (!isset($this->CONTROLS[0][$results[1][$i]])) | |
| 145 | continue; | |
| 146 | $content = str_replace($results[0][$i], '<?php | |
| 147 | if($' .$results[1][$i] .$op .$results[3][$i] .') | |
| 148 | {
| |
| 149 | echo \'' .$results[4][$i] .'\';' .'} | |
| 150 | else | |
| 151 | {
| |
| 152 | echo \'' .$results[5][$i] .'\';'.' | |
| 153 | }?>', $content); // Creating the test statement for compiling | |
| 154 | } | |
| 155 | $fakeray = array(); | |
| 156 | $fakecounter = 0; | |
| 157 | $ifUsedCount = 0; | |
| 158 | $jumble = $this->LEFT_DELIMITER .'Place_Holder.' .rand() .$this->RIGHT_DELIMITER; | |
| 159 | $pattarn = '`' .$this->LEFT_DELIMITER ."\s*([A-Za-z0-9_]+)\s*" .$this->RIGHT_DELIMITER .'`i'; | |
| 160 | $fake_pat = '`' .$this->LEFT_DELIMITER ."(.*)'(.*?)\{-\s*([A-Za-z0-9_]+)\s*-\}(.*?)'(.*)" .$this->RIGHT_DELIMITER .'`i';
| |
| 161 | // For returning statements inside the two delimeters that do not make sense without changing it | |
| 162 | preg_match_all($fake_pat, $content, $fakeray); | |
| 163 | $content = preg_replace($fake_pat, $jumble, $content, -1, $fakecounter); | |
| 164 | $includeprt = '<?php '; | |
| 165 | foreach ($this->PLUGINS as $iden => $arrayVar){
| |
| 166 | $bob = explode('.', $arrayVar);
| |
| 167 | $pattern = '`' .$this->LEFT_DELIMITER .$bob[1] .$this->RIGHT_DELIMITER .'`i'; | |
| 168 | $replace = '<?php echo ' .$this->PLUGIN_FUNC_STNX .$iden .'(); ?>'; | |
| 169 | $content = preg_replace($pattern, $replace, $content,-1,$ifUsedCount); | |
| 170 | if($ifUsedCount !=0) //this is used to include only the plugins that are used. for optomization... | |
| 171 | $includeprt .= 'include_once(\'' .$this->PLUGIN_DIR .$arrayVar .'\'); '; | |
| 172 | } | |
| 173 | $includeprt .= ' ?>'; | |
| 174 | for ($i = 0; $i < $fakecounter; $i++) | |
| 175 | $content = preg_replace('`' .$jumble .'`', $fakeray[0][$i], $content);
| |
| 176 | return $includeprt .$content; | |
| 177 | } | |
| 178 | } | |
| 179 | ||
| 180 | ?> |
