Cli\Color.php

<?php

namespace Cli;

/**
 * Color
 *
 * Applies colors to strings for cli output
 */
class Color
{
    /**
     * Foreground color codes
     *
     * @var array
     */
    protected static $fgColors = array(
        'black' => "\033[0;30m",
        'darkGray' => "\033[1;30m",
        'red' => "\033[0;31m",
        'lightRed' => "\033[1;31m",
        'green' => "\033[0;32m",
        'lightGreen' => "\033[1;32m",
        'brown' => "\033[0;33m",
        'yellow' => "\033[1;33m",
        'blue' => "\033[0;34m",
        'lightBlue' => "\033[1;34m",
        'purple' => "\033[0;35m",
        'lightPurple' => "\033[1;35m",
        'cyan' => "\033[0;36m",
        'lightCyan' => "\033[1;36m",
        'lightGray' => "\033[0;37m",
        'white' => "\033[1;37m",
    );

    /**
     * Background color codes
     *
     * @var array
     */
    protected static $bgColors = array(
        'black' => "\033[40m",
        'red' => "\033[41m",
        'green' => "\033[42m",
        'yellow' => "\033[43m",
        'blue' => "\033[44m",
        'magenta' => "\033[45m",
        'cyan' => "\033[46m",
        'lightGray' => "\033[47m",
    );

    /**
     * Color termination code
     *
     * @var string
     */
    protected static $endColor = "\033[0m";

    /**
     * Allows any foreground color to be called like a function
     *
     * @param string $fgName
     * @param array $arguments
     *
     * @return string
     */
    public static function __callStatic($fgName, array $arguments)
    {
        return self::colorize(array_shift($arguments), $fgName, array_shift($arguments));
    }

    /**
     * Returns string wrapped in foreground and/or background color codes
     *
     * @param string $string
     * @param string|null $fgName
     * @param string|null $bgName
     *
     * @return string
     */
    public static function colorize($string, $fgName = null, $bgName = null)
    {
        $fgCode = ($fgName === null || !array_key_exists($fgName, self::$fgColors)) ? null : self::$fgColors[$fgName];
        $bgCode = ($bgName === null || !array_key_exists($bgName, self::$bgColors)) ? null : self::$bgColors[$bgName];
        return $fgCode . $bgCode . $string . self::$endColor;
    }

    /**
     * Outputs a phrase in every possible color combination
     *
     * @param string $phrase
     */
    public static function demo($phrase = 'The quick brown fox jumps over the lazy dog')
    {
        $fgNames = array_keys(self::$fgColors);
        $bgNames = array_keys(self::$bgColors);

        $maxlen = function ($array) {
            return max(array_map('strlen', $array));
        };

        $labelSeparator = '/';
        $pad = $maxlen($fgNames) + $maxlen($bgNames) + strlen($labelSeparator);
        $format = "%-{$pad}s %s\n\n";

        foreach ($fgNames as $fgName) {
            echo sprintf($format, $fgName, self::$fgName($phrase));
            foreach ($bgNames as $bgName) {
                echo sprintf($format,
                    $fgName . $labelSeparator . $bgName,
                    self::colorize($phrase, $fgName, $bgName)
                );
            }
        }
    }
}