kadet1090 / KeyLighter

KeyLighter.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 23 and the first side effect is on line 83.

/**
 * Highlighter
 *
 * Copyright (C) 2015, Some right reserved.
 *
 * @author Kacper "Kadet" Donat <kadet1090@gmail.com>
 *
 * Contact with author:
 * Xmpp: kadet@jid.pl
 * E-mail: kadet1090@gmail.com
 *
 * From Kadet with love.
 */

namespace Kadet\Highlighter;

use Kadet\Highlighter\Formatter\CliFormatter;
use Kadet\Highlighter\Formatter\FormatterInterface;
use Kadet\Highlighter\Formatter\HtmlFormatter;
use Kadet\Highlighter\Language\Language;

class KeyLighter
{
    const VERSION = '0.2.0';

    /** @var */
    private static $_languages = [];
    /** @var FormatterInterface */
    private static $_formatter = null;

    /**
     * @param string $name
     *
     * @return Language
     */
    public static function getLanguage($name) {
        $embedded = [];
        if(($pos = strpos($name, '>')) !== false) {
            $embedded[] = self::getLanguage(trim(substr($name, $pos + 1)));
            $name       = trim(substr($name, 0, $pos));
        }

        $lang = isset(self::$_languages[$name]) ? self::$_languages[$name] : 'Kadet\\Highlighter\\Language\\PlainText';
        return new $lang([
            'embedded' => $embedded
        ]);
    }

    /**
     * @param Language|callable|string $language
     * @param $aliases
     */
    public static function registerLanguage($language, $aliases) {
        self::$_languages = array_merge(self::$_languages, array_fill_keys($aliases, $language));
    }

    public static function setDefaultFormatter(FormatterInterface $formatter) {
        self::$_formatter = $formatter;
    }

    public static function registeredLanguages() {
        return self::$_languages;
    }

    public static function getDefaultFormatter() {
        return self::$_formatter;
    }

    public static function highlight($source, $language, FormatterInterface $formatter = null) {
        $formatter = $formatter ?: self::getDefaultFormatter();

        if(!$language instanceof Language) {
            $language = self::getLanguage($language);
        }

        return $formatter->format($language->parse($source));
    }
}

# Acts like static constructor

KeyLighter::setDefaultFormatter(
    php_sapi_name() === 'cli' ?
        new CliFormatter() :
        new HtmlFormatter()
);

KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\PhpLanguage', ['php']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\XmlLanguage', ['xml', 'xaml']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\HtmlLanguage', ['html', 'htm']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\PowerShellLanguage', ['powershell', 'posh', 'ps1']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\PlainText', ['plaintext', 'text', 'none', 'txt']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\LatexLanguage', ['tex', 'latex']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\IniLanguage', ['ini', 'cfg']);
KeyLighter::registerLanguage('Kadet\\Highlighter\\Language\\JavaScriptLanguage', ['js', 'jscript', 'javascript']);