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<?php
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/*
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 * This file is part of the symfony package.
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 * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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/**
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 * sfAnsiColorFormatter provides methods to colorize text to be displayed on a console.
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 *
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 * @package    symfony
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 * @subpackage command
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 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
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 * @version    SVN: $Id: sfAnsiColorFormatter.class.php 21908 2009-09-11 12:06:21Z fabien $
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 */
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class sfAnsiColorFormatter extends sfFormatter
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{
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  protected
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    $styles = array(
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      'ERROR'    => array('bg' => 'red', 'fg' => 'white', 'bold' => true),
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      'INFO'     => array('fg' => 'green', 'bold' => true),
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      'COMMENT'  => array('fg' => 'yellow'),
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      'QUESTION' => array('bg' => 'cyan', 'fg' => 'black', 'bold' => false),
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    ),
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    $options    = array('bold' => 1, 'underscore' => 4, 'blink' => 5, 'reverse' => 7, 'conceal' => 8),
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    $foreground = array('black' => 30, 'red' => 31, 'green' => 32, 'yellow' => 33, 'blue' => 34, 'magenta' => 35, 'cyan' => 36, 'white' => 37),
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    $background = array('black' => 40, 'red' => 41, 'green' => 42, 'yellow' => 43, 'blue' => 44, 'magenta' => 45, 'cyan' => 46, 'white' => 47);
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  /**
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   * Sets a new style.
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   *
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   * @param string $name    The style name
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   * @param array  $options An array of options
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   */
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  public function setStyle($name, $options = array())
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  {
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    $this->styles[$name] = $options;
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  }
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  /**
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   * Formats a text according to the given style or parameters.
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   *
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   * @param  string   $text       The test to style
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   * @param  mixed    $parameters An array of options or a style name
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   *
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   * @return string The styled text
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   */
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  public function format($text = '', $parameters = array())
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  {
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    if (!is_array($parameters) && 'NONE' == $parameters)
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    {
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      return $text;
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    }
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    if (!is_array($parameters) && isset($this->styles[$parameters]))
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    {
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      $parameters = $this->styles[$parameters];
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    }
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    $codes = array();
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    if (isset($parameters['fg']))
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    {
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      $codes[] = $this->foreground[$parameters['fg']];
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    }
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    if (isset($parameters['bg']))
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    {
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      $codes[] = $this->background[$parameters['bg']];
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    }
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    foreach ($this->options as $option => $value)
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    {
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      if (isset($parameters[$option]) && $parameters[$option])
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      {
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        $codes[] = $value;
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      }
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    }
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    return "\033[".implode(';', $codes).'m'.$text."\033[0m";
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  }
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  /**
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   * Formats a message within a section.
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   *
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   * @param string  $section  The section name
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   * @param string  $text     The text message
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   * @param integer $size     The maximum size allowed for a line
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   * @param string  $style    The color scheme to apply to the section string (INFO, ERROR, COMMENT or QUESTION)
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   */
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  public function formatSection($section, $text, $size = null, $style = 'INFO')
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  {
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    if (null === $size)
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    {
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      $size = $this->size;
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    }
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    $style = array_key_exists($style, $this->styles) ? $style : 'INFO';
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    $width = 9 + strlen($this->format('', $style));
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    return sprintf(">> %-{$width}s %s", $this->format($section, $style), $this->excerpt($text, $size - 4 - (strlen($section) > 9 ? strlen($section) : 9)));
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  }
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  /**
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   * Truncates a line.
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   *
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   * @param string  $text The text
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   * @param integer $size The maximum size of the returned string
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   *
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   * @return string The truncated string
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   */
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  public function excerpt($text, $size = null)
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  {
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    if (!$size)
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    {
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      $size = $this->size;
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    }
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    if (strlen($text) < $size)
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    {
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      return $text;
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    }
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    $subsize = floor(($size - 3) / 2);
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    return substr($text, 0, $subsize).$this->format('...', 'INFO').substr($text, -$subsize);
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  }
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}