Added readme and code

2013-07-27 21:02:21 +01:00
parent 6b2d0fa18b
commit 91868a39d2
5 changed files with 256 additions and 0 deletions
--- a/Template.php
+++ b/Template.php
@@ -0,0 +1,136 @@
+<?php
+
+/**
+ * Template renderer
+ * 
+ * @author Sam Stevens <sam@xnet.tk>
+ * @license http://opensource.org/licenses/MIT MIT License
+ */
+
+if (!defined('DIR_TEMPLATES_COMPILED'))
+  define('DIR_TEMPLATES_COMPILED', False);
+
+class Template
+{
+  private static $currentTemplater = false;
+  /**
+   * @return Template
+   */
+  public static function GetInstance()
+  {
+    if (self::$currentTemplater != false)
+      return self::$currentTemplater;
+    return new self();
+  }
+  public static function ClearCompiled()
+  {
+    $files = glob(DIR_TEMPLATES_COMPILED.'/*.template.php');
+    foreach($files as $file)
+    {
+      if (is_file($file))
+        unlink($file);
+    }
+  }
+  
+  private $context = array();
+
+  private $level = 0;
+  
+  private $sections = array();
+  private $currentSection = false;
+  private $master = false;
+  
+  private function __construct() {
+  }
+  
+  private function GetCompiledFilename($tFile) {
+    if (DIR_TEMPLATES_COMPILED == false) {
+      return false;
+    }
+    $tFileSafe = preg_replace(array('%^'.preg_quote(DIR_TEMPLATES).'/%','/[^a-z0-9_\.]/i'), array('','_'), $tFile);
+    return DIR_TEMPLATES_COMPILED.DS.$tFileSafe.'-'.md5($tFile).'.template.php';
+  }
+  private function GetCompiled($tFile) {
+    $compiledFile = $this->GetCompiledFilename($tFile);
+    if ($compiledFile === false) {
+      return false;
+    }
+    if (file_exists($compiledFile) && filemtime($tFile) > filemtime($compiledFile)) {
+      unlink($compiledFile);
+      return False;
+    }
+    if (file_exists($compiledFile)) {
+      return $compiledFile;
+    }
+  }
+  private function SaveCompiled($tFile, $contents) {
+    $compiledFile = $this->GetCompiledFilename($tFile);
+    if ($compiledFile === false) {
+      return false;
+    }
+    file_put_contents($compiledFile, '<?php if(!defined("DIR_TEMPLATES")) {echo "This file cannot be accessed directly";exit();} ?>'.$contents);
+  }
+  
+  public function Render($file, array $context = array()) {
+    self::$currentTemplater = $this;
+    
+    $tFile = str_replace('.', DS, $file);
+    $tFile = DIR_TEMPLATES.DS.$tFile.'.php';
+    if (!is_file($tFile))
+      throw new Exception("Unknown Template ".$file);
+    
+    if (isset($this->context[$this->level]))
+      $context = array_replace($this->context[$this->level], $context);
+    $this->level++;
+    $this->context[$this->level] = &$context;
+    
+    extract($this->context[$this->level], EXTR_REFS | EXTR_SKIP);
+    
+    $this->master = false;
+    
+    $compiledTemplate = $this->GetCompiled($tFile);
+    if ($compiledTemplate == false) {
+      $templateContents = file_get_contents($tFile);
+      $templateContents = preg_replace(
+          array('%{{t\s((?!}}).*?)\}}%', '%{{((?!}}).*?)}}%', '%{\%t\s((?!}}).*?)\%}%', '%{\%((?!}}).*?)\%}%'),
+          array('<?php echo $this->$1 ;?>', '<?php echo $1 ;?>', '<?php $this->$1 ;?>', '<?php $1 ;?>'), 
+          $templateContents);
+      $this->SaveCompiled($tFile, $templateContents);
+      $result = eval('?>'.$templateContents);
+    } else {
+      ob_start();
+      include($compiledTemplate);
+      $result = ob_get_clean();
+    }
+    
+    self::$currentTemplater = false;
+    if ($this->currentSection != False)
+      $this->EndSection();
+    
+    if ($this->master != false) {
+      return $this->Render($this->master);
+    }
+    
+    unset($this->context[$this->level]);
+    $this->level--;
+    
+    return $result;
+  }
+  
+  private function SetMaster($file) {
+    $this->master = $file;
+  }
+  private function StartSection($name) {
+    $this->currentSection = $name;
+    ob_start();
+  }
+  private function EndSection() {
+    $this->sections[$this->currentSection] = ob_get_clean();
+    $this->currentSection = false;
+  }
+  private function GetSection($name) {
+    if (isset($this->sections[$name]))
+      return $this->sections[$name];
+    return '';
+  }
+}