Chris@0: <?php
Chris@0: /*
Chris@0:  * This file is part of the Text_Template package.
Chris@0:  *
Chris@0:  * (c) Sebastian Bergmann <sebastian@phpunit.de>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: /**
Chris@0:  * A simple template engine.
Chris@0:  *
Chris@0:  * @since Class available since Release 1.0.0
Chris@0:  */
Chris@0: class Text_Template
Chris@0: {
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $template = '';
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $openDelimiter = '{';
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $closeDelimiter = '}';
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      */
Chris@0:     protected $values = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * Constructor.
Chris@0:      *
Chris@0:      * @param  string                   $file
Chris@0:      * @throws InvalidArgumentException
Chris@0:      */
Chris@0:     public function __construct($file = '', $openDelimiter = '{', $closeDelimiter = '}')
Chris@0:     {
Chris@0:         $this->setFile($file);
Chris@0:         $this->openDelimiter  = $openDelimiter;
Chris@0:         $this->closeDelimiter = $closeDelimiter;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Sets the template file.
Chris@0:      *
Chris@0:      * @param  string                   $file
Chris@0:      * @throws InvalidArgumentException
Chris@0:      */
Chris@0:     public function setFile($file)
Chris@0:     {
Chris@0:         $distFile = $file . '.dist';
Chris@0: 
Chris@0:         if (file_exists($file)) {
Chris@0:             $this->template = file_get_contents($file);
Chris@0:         }
Chris@0: 
Chris@0:         else if (file_exists($distFile)) {
Chris@0:             $this->template = file_get_contents($distFile);
Chris@0:         }
Chris@0: 
Chris@0:         else {
Chris@0:             throw new InvalidArgumentException(
Chris@0:               'Template file could not be loaded.'
Chris@0:             );
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Sets one or more template variables.
Chris@0:      *
Chris@0:      * @param array $values
Chris@0:      * @param bool  $merge
Chris@0:      */
Chris@0:     public function setVar(array $values, $merge = TRUE)
Chris@0:     {
Chris@0:         if (!$merge || empty($this->values)) {
Chris@0:             $this->values = $values;
Chris@0:         } else {
Chris@0:             $this->values = array_merge($this->values, $values);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Renders the template and returns the result.
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function render()
Chris@0:     {
Chris@0:         $keys = array();
Chris@0: 
Chris@0:         foreach ($this->values as $key => $value) {
Chris@0:             $keys[] = $this->openDelimiter . $key . $this->closeDelimiter;
Chris@0:         }
Chris@0: 
Chris@0:         return str_replace($keys, $this->values, $this->template);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Renders the template and writes the result to a file.
Chris@0:      *
Chris@0:      * @param string $target
Chris@0:      */
Chris@0:     public function renderTo($target)
Chris@0:     {
Chris@0:         $fp = @fopen($target, 'wt');
Chris@0: 
Chris@0:         if ($fp) {
Chris@0:             fwrite($fp, $this->render());
Chris@0:             fclose($fp);
Chris@0:         } else {
Chris@0:             $error = error_get_last();
Chris@0: 
Chris@0:             throw new RuntimeException(
Chris@0:               sprintf(
Chris@0:                 'Could not write to %s: %s',
Chris@0:                 $target,
Chris@0:                 substr(
Chris@0:                   $error['message'],
Chris@0:                   strpos($error['message'], ':') + 2
Chris@0:                 )
Chris@0:               )
Chris@0:             );
Chris@0:         }
Chris@0:     }
Chris@0: }
Chris@0: