87 lines
2.7 KiB
PHP
87 lines
2.7 KiB
PHP
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<?php
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class Template {
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static $blocks = array();
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static $cache_path = 'cache/';
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static $cache_enabled = TRUE;
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static function view($file, $data = array()) {
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$cached_file = self::cache($file);
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extract($data, EXTR_SKIP);
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require $cached_file;
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}
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static function cache($file) {
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if (!file_exists(self::$cache_path)) {
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mkdir(self::$cache_path, 0744);
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}
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$cached_file = self::$cache_path . str_replace(array('/', '.html'), array('_', ''), $file . '.php');
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if (!self::$cache_enabled || !file_exists($cached_file) || filemtime($cached_file) < filemtime($file)) {
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$code = self::includeFiles($file);
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$code = self::compileCode($code);
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file_put_contents($cached_file, '<?php class_exists(\'' . __CLASS__ . '\') or exit; ?>' . PHP_EOL . $code);
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}
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return $cached_file;
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}
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static function clearCache() {
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foreach(glob(self::$cache_path . '*') as $file) {
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unlink($file);
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}
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}
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static function compileCode($code) {
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$code = self::compileBlock($code);
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$code = self::compileYield($code);
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$code = self::compileEscapedEchos($code);
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$code = self::compileEchos($code);
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$code = self::compilePHP($code);
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return $code;
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}
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static function includeFiles($file) {
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$code = file_get_contents($file);
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preg_match_all('/{% ?(extends|include) ?\'?(.*?)\'? ?%}/i', $code, $matches, PREG_SET_ORDER);
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foreach ($matches as $value) {
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$code = str_replace($value[0], self::includeFiles($value[2]), $code);
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}
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$code = preg_replace('/{% ?(extends|include) ?\'?(.*?)\'? ?%}/i', '', $code);
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return $code;
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}
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static function compilePHP($code) {
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return preg_replace('~\{%\s*(.+?)\s*\%}~is', '<?php $1 ?>', $code);
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}
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static function compileEchos($code) {
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return preg_replace('~\{{\s*(.+?)\s*\}}~is', '<?php echo $1 ?>', $code);
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}
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static function compileEscapedEchos($code) {
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return preg_replace('~\{{{\s*(.+?)\s*\}}}~is', '<?php echo htmlentities($1, ENT_QUOTES, \'UTF-8\') ?>', $code);
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}
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static function compileBlock($code) {
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preg_match_all('/{% ?block ?(.*?) ?%}(.*?){% ?endblock ?%}/is', $code, $matches, PREG_SET_ORDER);
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foreach ($matches as $value) {
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if (!array_key_exists($value[1], self::$blocks)) self::$blocks[$value[1]] = '';
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if (strpos($value[2], '@parent') === false) {
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self::$blocks[$value[1]] = $value[2];
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} else {
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self::$blocks[$value[1]] = str_replace('@parent', self::$blocks[$value[1]], $value[2]);
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}
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$code = str_replace($value[0], '', $code);
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}
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return $code;
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}
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static function compileYield($code) {
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foreach(self::$blocks as $block => $value) {
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$code = preg_replace('/{% ?yield ?' . $block . ' ?%}/', $value, $code);
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}
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$code = preg_replace('/{% ?yield ?(.*?) ?%}/i', '', $code);
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return $code;
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}
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}
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?>
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