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161 <?php
class Template {
public $vars = [];
public $blocks = [];
private $pagevars = [];
private $tpl_path = NULL;
private $cache_path = NULL;
public function __construct ($tpl_path, array $pagevars) {
if(!file_exists($tpl_path)){
throw new Exception('Error templates folder not found.');
} else {
$this->tpl_path = $tpl_path;
}
$this->pagevars = $pagevars;
}
public function assign ($vars, $value = null) {
if (is_array($vars)) {
$this->vars = array_merge($this->vars, $vars);
} else if ($value !== null) {
$this->vars[$vars] = $value;
}
}
public function blockAssign ($name, $array) {
$this->blocks[$name][] = (array)$array;
}
private function compileVars ($var) {
$newvar = $this->compileVar($var[1]);
return "<?php echo isset(" . $newvar . ") ? " . $newvar . " : '{" . $var[1] . "}' ?>";
}
private function compileVar ($var) {
if (strpos($var, '.') === false) {
$var = '$this->vars[\'' . $var . '\']';
} else {
$vars = explode('.', $var);
if (!isset($this->blocks[$vars[0]]) && isset($this->vars[$var[0]]) && gettype($this->vars[$var[0]]) == 'array') {
$var = '$this->vars[\'' . $vars[0] . '\'][\'' . $vars[1] . '\']';
} else {
$var = preg_replace("#(.*)\.(.*)#", "\$_$1['$2']", $var);
}
}
return $var;
}
private function compileTags ($match) {
switch ($match[1]) {
case 'INCLUDE':
return "<?php echo \$this->compile('" . $match[2] . "'); ?>";
break;
case 'INCLUDEPHP':
return "<?php echo include(" . PATH . $match[2] . "'); ?>";
break;
case 'IF':
return $this->compileIf($match[2], false);
break;
case 'ELSEIF':
return $this->compileIf($match[2], true);
break;
case 'ELSE':
return "<?php } else { ?>";
break;
case 'ENDIF':
return "<?php } ?>";
break;
case 'BEGIN':
return "<?php if (isset(\$this->blocks['" . $match[2] . "'])) { foreach (\$this->blocks['" . $match[2] . "'] as \$_" . $match[2] . ") { ?>";
break;
case 'BEGINELSE':
return "<?php } } else { { ?>";
break;
case 'END':
return "<?php } } ?>";
break;
}
}
private function compileIf ($code, $elseif) {
$ex = explode(' ', trim($code));
$code = '';
foreach ($ex as $value) {
$chars = strtolower($value);
switch ($chars) {
case 'and':
case '&&':
case 'or':
case '||':
case '==':
case '!=':
case '!==':
case '>':
case '<':
case '>=':
case '<=':
case '0':
case is_numeric($value):
$code .= $value;
break;
case 'not':
$code .= '!';
break;
default:
if (preg_match('/^[A-Za-z0-9_\-\.]+$/i', $value)) {
$var = $this->compileVar($value);
$code .= "(isset(" . $var . ") ? " . $var . " : '')";
} else {
$code .= '\'' . preg_replace("#(\\\\|\'|\")#", '', $value) . '\'';
}
break;
}
$code .= ' ';
}
return '<?php ' . (($elseif) ? '} else ' : '') . 'if (' . trim($code) . ") { ?>";
}
private function compile ($file) {
$abs_file = $this->tpl_path.'/'.$file;
$tpl = file_get_contents($abs_file);
$tpl = preg_replace("#<\?(.*)\?>#", '', $tpl);
$tpl = preg_replace_callback("#<!-- ([A-Z]+) (.*)? ?-->#U", array($this, 'compileTags'), $tpl);
$tpl = preg_replace_callback("#{([A-Za-z0-9_\-.]+)}#U", array($this, 'compileVars'), $tpl);
if (eval(' ?>'.$tpl.'<?php ') === false) {
$this->error();
}
}
public function error () {
exit('Fehler im Template!');
}
public function render ($file, $data = NULL) {
$this->assign($this->pagevars);
if ($data !== NULL) {
$this->assign($data);
}
$this->compile($file.'.tpl');
exit();
}
}