<?php
/*
 * This file is part of the symfony package.
 * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/*
 *  $Id: AnsiColorFormatter.php 48519 2012-02-03 23:18:52Z btowles $
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */

/**
 * Doctrine_AnsiColorFormatter provides methods to colorize text to be displayed on a console.
 * This class was taken from the symfony-project source
 *
 * @package    Doctrine
 * @subpackage Cli
 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
 * @author     Jonathan H. Wage <jonwage@gmail.com>
 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
 * @link        www.doctrine-project.org
 * @since       1.0
 * @version     $Revision: 4252 $
 */
class Doctrine_Cli_AnsiColorFormatter extends Doctrine_Cli_Formatter
{
    protected
        $_styles = array(
            'HEADER'  => array('fg' => 'black', 'bold' => true),
            'ERROR'   => array('bg' => 'red', 'fg' => 'white', 'bold' => true),
            'INFO'    => array('fg' => 'green', 'bold' => true),
            'COMMENT' => array('fg' => 'yellow'),
            ),
        $_options    = array('bold' => 1, 'underscore' => 4, 'blink' => 5, 'reverse' => 7, 'conceal' => 8),
        $_foreground = array('black' => 30, 'red' => 31, 'green' => 32, 'yellow' => 33, 'blue' => 34, 'magenta' => 35, 'cyan' => 36, 'white' => 37),
        $_background = array('black' => 40, 'red' => 41, 'green' => 42, 'yellow' => 43, 'blue' => 44, 'magenta' => 45, 'cyan' => 46, 'white' => 47);

    /**
     * Sets a new style.
     *
     * @param string The style name
     * @param array  An array of options
     */
    public function setStyle($name, $options = array())
    {
        $this->_styles[$name] = $options;
    }

    /**
     * Formats a text according to the given style or parameters.
     *
     * @param  string The test to style
     * @param  mixed  An array of options or a style name
     *
     * @return string The styled text
     */
    public function format($text = '', $parameters = array(), $stream = STDOUT)
    {
        if ( ! $this->supportsColors($stream)) {
            return $text;
        }

        if ( ! is_array($parameters) && 'NONE' == $parameters) {
            return $text;
        }

        if ( ! is_array($parameters) && isset($this->_styles[$parameters])) {
            $parameters = $this->_styles[$parameters];
        }

        $codes = array();
        if (isset($parameters['fg'])) {
            $codes[] = $this->_foreground[$parameters['fg']];
        }
        
        if (isset($parameters['bg'])) {
            $codes[] = $this->_background[$parameters['bg']];
        }
        
        foreach ($this->_options as $option => $value) {
            if (isset($parameters[$option]) && $parameters[$option]) {
                $codes[] = $value;
            }
        }

        return "\033[".implode(';', $codes).'m'.$text."\033[0m";
    }

    /**
     * Formats a message within a section.
     *
     * @param string  The section name
     * @param string  The text message
     * @param integer The maximum size allowed for a line (65 by default)
     */
    public function formatSection($section, $text, $size = null)
    {
        $width = 9 + strlen($this->format('', 'INFO'));

        return sprintf(">> %-${width}s %s", $this->format($section, 'INFO'), $this->excerpt($text, $size));
    }

    /**
     * Truncates a line.
     *
     * @param string  The text
     * @param integer The maximum size of the returned string (65 by default)
     *
     * @return string The truncated string
     */
    public function excerpt($text, $size = null)
    {
        if ( ! $size) {
            $size = $this->size;
        }

        if (strlen($text) < $size) {
            return $text;
        }

        $subsize = floor(($size - 3) / 2);

        return substr($text, 0, $subsize) . $this->format('...', 'INFO').substr($text, -$subsize);
    }

    /**
     * Returns true if the stream supports colorization.
     *
     * Colorization is disabled if not supported by the stream:
     *
     *  -  windows
     *  -  non tty consoles
     *
     * @param  mixed A stream
     *
     * @return Boolean true if the stream supports colorization, false otherwise
     */
    public function supportsColors($stream)
    {
        return DIRECTORY_SEPARATOR != '\\' && function_exists('posix_isatty') && @posix_isatty($stream);
    }
}