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<?php
/**
 * Color.php
 *
 * PHP version 4
 * 
 * Copyright (c) 2007 Stefan Walk
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy 
 * of this software and associated documentation files (the "Software"), to 
 * deal in the Software without restriction, including without limitation the 
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 
 * sell copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 
 * IN THE SOFTWARE.
 *
 * @category Console
 * @package  Console_Color
 * @author   Stefan Walk <et@php.net>
 * @license  http://www.opensource.org/licenses/mit-license.php MIT License
 * @link     http://pear.php.net/package/Console_Color
 */

$GLOBALS['_CONSOLE_COLOR_CODES'] = array (
    'color' => array(
            'black'  => 30,
            'red'    => 31,
            'green'  => 32,
            'brown'  => 33,
            'blue'   => 34,
            'purple' => 35,
            'cyan'   => 36,
            'grey'   => 37,
            'yellow' => 33
    ),
    'style' => array(
            'normal'     => 0,
            'bold'       => 1,
            'light'      => 1,
            'underscore' => 4,
            'underline'  => 4,
            'blink'      => 5,
            'inverse'    => 6,
            'hidden'     => 8,
            'concealed'  => 8
    ),
    'background' => array(
            'black'  => 40,
            'red'    => 41,
            'green'  => 42,
            'brown'  => 43,
            'yellow' => 43,
            'blue'   => 44,
            'purple' => 45,
            'cyan'   => 46,
            'grey'   => 47
    )
);

/**
 * A simple class to use ANSI Colorcodes.
 *
 * Of all the functions, you probably only want to use convert() and escape(). 
 * They are easier to use. However, if you want to access colorcodes more
 * directly, look into the other functions.
 *
 * @category Console
 * @package  Console_Color
 * @author   Stefan Walk <et@php.net>
 * @license  http://www.opensource.org/licenses/mit-license.php MIT License
 * @link     http://pear.php.net/package/Console_Color
 */
class Console_Color
{

/**
     * Returns an ANSI-Controlcode
     * 
     * Takes 1 to 3 Arguments: either 1 to 3 strings containing the name of the
     * FG Color, style and BG color, or one array with the indices color, style
     * or background.
     *
     * @param mixed  $color      Optional.
     *                           Either a string with the name of the foreground
     *                           color, or an array with the indices 'color', 
     *                           'style', 'background' and corresponding names as
     *                           values.
     * @param string $style      Optional name of the style
     * @param string $background Optional name of the background color
     *
     * @access public
     * @return string
     */
    function color($color = null, $style = null, $background = null) // {{{
    {
        $colors = &$GLOBALS['_CONSOLE_COLOR_CODES'];
        if (is_array($color)) {
            $style      = @$color['style'];
            $background = @$color['background'];
            $color      = @$color['color'];
        }

if ($color == 'reset') {
            return "\033[0m";
        }

$code = array();
        if (isset($color)) {
            $code[] = $colors['color'][$color];
        }

if (isset($style)) {
            $code[] = $colors['style'][$style];
        }

if (isset($background)) {
            $code[] = $colors['background'][$background];
        }

if (empty($code)) {
            $code[] = 0;
        }

$code = implode(';', $code);
        return "\033[{$code}m";
    } // }}}

/**
     * Returns a FG color controlcode
     *
     * @param string $name Name of controlcode
     *
     * @access public
     * @return string
     */
    function fgcolor($name)
    {
        $colors = &$GLOBALS['_CONSOLE_COLOR_CODES'];
        return "\033[".$colors['color'][$name].'m';
    }
    
    /**
     * Returns a style controlcode
     *
     * @param string $name Name of controlcode
     *
     * @access public
     * @return string
     */
    function style($name)
    {
        $colors = &$GLOBALS['_CONSOLE_COLOR_CODES'];
        return "\033[".$colors['style'][$name].'m';
    }
    
    /**
     * Returns a BG color controlcode
     *
     * @param string $name Name of controlcode
     *
     * @access public
     * @return string
     */
    function bgcolor($name)
    {
        $colors = &$GLOBALS['_CONSOLE_COLOR_CODES'];
        return "\033[".$colors['background'][$name].'m';
    }

/**
     * Converts colorcodes in the format %y (for yellow) into ansi-control
     * codes. The conversion table is: ('bold' meaning 'light' on some
     * terminals). It's almost the same conversion table irssi uses.
     * <pre> 
     *                  text      text            background
     *      ------------------------------------------------
     *      %k %K %0    black     dark grey       black
     *      %r %R %1    red       bold red        red
     *      %g %G %2    green     bold green      green
     *      %y %Y %3    yellow    bold yellow     yellow
     *      %b %B %4    blue      bold blue       blue
     *      %m %M %5    magenta   bold magenta    magenta
     *      %p %P       magenta (think: purple)
     *      %c %C %6    cyan      bold cyan       cyan
     *      %w %W %7    white     bold white      white
     *
     *      %F     Blinking, Flashing
     *      %U     Underline
     *      %8     Reverse
     *      %_,%9  Bold
     *
     *      %n     Resets the color
     *      %%     A single %
     * </pre>
     * First param is the string to convert, second is an optional flag if
     * colors should be used. It defaults to true, if set to false, the
     * colorcodes will just be removed (And %% will be transformed into %)
     *
     * @param string $string  String to convert
     * @param bool   $colored Should the string be colored?
     *
     * @access public
     * @return string
     */
    function convert($string, $colored = true)
    {
        static $conversions = array ( // static so the array doesn't get built
                                      // everytime
            // %y - yellow, and so on... {{{
            '%y' => array('color' => 'yellow'),
            '%g' => array('color' => 'green' ),
            '%b' => array('color' => 'blue'  ),
            '%r' => array('color' => 'red'   ),
            '%p' => array('color' => 'purple'),
            '%m' => array('color' => 'purple'),
            '%c' => array('color' => 'cyan'  ),
            '%w' => array('color' => 'grey'  ),
            '%k' => array('color' => 'black' ),
            '%n' => array('color' => 'reset' ),
            '%Y' => array('color' => 'yellow',  'style' => 'light'),
            '%G' => array('color' => 'green',   'style' => 'light'),
            '%B' => array('color' => 'blue',    'style' => 'light'),
            '%R' => array('color' => 'red',     'style' => 'light'),
            '%P' => array('color' => 'purple',  'style' => 'light'),
            '%M' => array('color' => 'purple',  'style' => 'light'),
            '%C' => array('color' => 'cyan',    'style' => 'light'),
            '%W' => array('color' => 'grey',    'style' => 'light'),
            '%K' => array('color' => 'black',   'style' => 'light'),
            '%N' => array('color' => 'reset',   'style' => 'light'),
            '%3' => array('background' => 'yellow'),
            '%2' => array('background' => 'green' ),
            '%4' => array('background' => 'blue'  ),
            '%1' => array('background' => 'red'   ),
            '%5' => array('background' => 'purple'),
            '%6' => array('background' => 'cyan'  ),
            '%7' => array('background' => 'grey'  ),
            '%0' => array('background' => 'black' ),
            // Don't use this, I can't stand flashing text
            '%F' => array('style' => 'blink'),
            '%U' => array('style' => 'underline'),
            '%8' => array('style' => 'inverse'),
            '%9' => array('style' => 'bold'),
            '%_' => array('style' => 'bold')
            // }}}
        );

if ($colored) {
            $string = str_replace('%%', '% ', $string);
            foreach ($conversions as $key => $value) {
                $string = str_replace($key, Console_Color::color($value),
                          $string);
            }
            $string = str_replace('% ', '%', $string);

} else {
            $string = preg_replace('/%((%)|.)/', '$2', $string);
        }

return $string;
    }

/**
     * Escapes % so they don't get interpreted as color codes
     * 
     * @param string $string String to escape
     *
     * @access public
     * @return string
     */
    function escape($string) 
    {
        return str_replace('%', '%%', $string);
    }

/**
     * Strips ANSI color codes from a string
     *
     * @param string $string String to strip
     *
     * @acess public
     * @return string
     */
    function strip($string) 
    {
        return preg_replace('/\033\[[\d;]+m/', '', $string);
    }

}
?>