movim/app/helpers/StringHelper.php

<?php

use HeyUpdate\Emoji\Emoji;
use HeyUpdate\Emoji\EmojiIndex;

/**
 * @desc A singleton wrapper for the Emoji library
 */
class MovimEmoji
{
    protected static $instance = null;
    private $_emoji;
    private $_theme;

    protected function __construct()
    {
        $cd = new \Modl\ConfigDAO();
        $config = $cd->get();
        $this->_theme = $config->theme;

        $this->_emoji = new Emoji(new EmojiIndex(), $this->getPath());
    }

    public function replace($string, $large = false)
    {
        $this->_emoji->setAssetUrlFormat($this->getPath());
        $string = $this->_emoji->replaceEmojiWithImages($string);
        $this->_emoji->setAssetUrlFormat($this->getPath());

        return $string;
    }

    private function getPath($large = false)
    {
        return BASE_URI . 'themes/' . $this->_theme . '/img/emojis/svg/%s.svg';
    }

    public static function getInstance()
    {
        if (!isset(static::$instance)) {
            static::$instance = new MovimEmoji;
        }
        return static::$instance;
    }
}

function addUrls($string, $preview = false) {
    // Add missing links
    return preg_replace_callback(
        "/([\w\"'>]+\:\/\/[\w-?'&;#+,%:~=\.\/\@]+)/u", function ($match) use($preview) {
            if(!in_array(substr($match[0], 0, 1), array('>', '"', '\''))) {
                $content = $match[0];

                if($preview) {
                    try {
                        $embed = Embed\Embed::create($match[0]);
                        if($embed->type == 'photo'
                        && $embed->images[0]['width'] <= 1024
                        && $embed->images[0]['height'] <= 1024) {
                            $content = '<img src="'.$match[0].'"/>';
                        } elseif($embed->type == 'link') {
                            $content .= ' - '. $embed->title . ' - ' . $embed->providerName;
                        }
                    } catch(Exception $e) {
                        error_log($e->getMessage());
                    }
                }

                return stripslashes('<a href=\"'.$match[0].'\" target=\"_blank\">'.$content.'</a>');
            } else {
                return $match[0];
            }

        }, $string
    );
}

function addHFR($string) {
    // HFR EasterEgg
    return preg_replace_callback(
            '/\[:([\w\s-]+)([:\d])*\]/', function ($match) {
                $num = '';
                if(count($match) == 3)
                    $num = $match[2].'/';
                return '<img class="hfr" title="'.$match[0].'" alt="'.$match[0].'" src="http://forum-images.hardware.fr/images/perso/'.$num.$match[1].'.gif">';
            }, $string
    );
}

/**
 * @desc Prepare the string (add the a to the links and show the smileys)
 *
 * @param string $string
 * @param boolean display large emojis
 * @param check the links and convert them to pictures (heavy)
 * @return string
 */
function prepareString($string, $large = false, $preview = false) {
    $string = addUrls($string, $preview);

    // We remove all the style attributes
    $string = preg_replace_callback(
        '/(<[^>]+) style=".*?"/i', function($match) {
            return $match[1];
        }, $string
    );

    // Twitter hashtags
    $string = preg_replace_callback(
        "/ #[a-zA-Z0-9_-]{3,}/", function ($match) { return ' <a class="twitter hastag" href="http://twitter.com/search?q='.  urlencode(trim($match[0])).  '&src=hash" target="_blank">'.  trim($match[0]).  '</a>'; }, ' ' . $string);
    $string = preg_replace_callback(
        "/ @[a-zA-Z0-9_-]{3,}/", function ($match) {
            return
                ' <a class="twitter at" href="http://twitter.com/'.
                    trim($match[0]).
                    '" target="_blank">'.
                    trim($match[0]).
                '</a>';
      }, ' ' . $string
    );

    //remove all scripts
    $string = preg_replace_callback(
            '#<[/]?script[^>]*>#is', function ($match) {
                return '';
            }, ' ' . $string
    );
    //remove all iframe
    $string = preg_replace_callback(
            '#<[/]?iframe[^>]*>#is', function ($match) {
                return '';
            }, ' ' . $string
    );
    //remove all iframe
    $string = preg_replace_callback(
            '#<[/]?ss[^>]*>#is', function ($match) {
                return '';
            }, ' ' . $string
    );

    // We add some smileys...
    $emoji = MovimEmoji::getInstance();
    $string = $emoji->replace($string, $large);

    return trim($string);
}


/**
 * Fix self-closing tags
 */
function fixSelfClosing($string) {
    return preg_replace_callback('/<([^\s<]+)\/>/',
        function($match) {
            return '<'.$match[1].'></'.$match[1].'>';
        }
        , $string);
}

/**
 * Remove the content, body and html tags
 */
function cleanHTMLTags($string) {
    return str_replace(
        array(
            '<content type="html">',
            '<html xmlns="http://jabber.org/protocol/xhtml-im">',
            '<body xmlns="http://www.w3.org/1999/xhtml">',
            '</body>',
            '</html>',
            '</content>'),
        '',
        $string);
}

/**
 * Return an array of informations from a XMPP uri
 */
function explodeURI($uri) {
    $arr = parse_url(urldecode($uri));
    $result = array();

    if(isset($arr['query'])) {
        $query = explode(';', $arr['query']);


        foreach($query as $elt) {
            if($elt != '') {
                list($key, $val) = explode('=', $elt);
                $result[$key] = $val;
            }
        }

        $arr = array_merge($arr, $result);
    }

    return $arr;

}

/*
 * Echap the JID
 */
function echapJid($jid)
{
    return str_replace(' ', '\40', $jid);
}

/*
 * Echap the anti-slashs for Javascript
 */
function echapJS($string)
{
    return str_replace("\\", "\\\\", $string);
}

/*
 * Clean the resource of a jid
 */
function cleanJid($jid)
{
    $explode = explode('/', $jid);
    return reset($explode);
}

/*
 *  Explode JID
 */
function explodeJid($jid)
{
    $arr = explode('/', $jid);
    $jid = $arr[0];

    if(isset($arr[1])) $resource = $arr[1];
    else $resource = null;

    list($username, $server) = explode('@', $jid);

    return array(
        'username'  => $username,
        'server'    => $server,
        'resource' => $resource
        );
}

/**
 * Return a URIfied string
 * @param string
 * @return string
 */
function stringToUri($url) {
    $url = utf8_decode($url);
    $url = strtolower(strtr($url, utf8_decode('ÀÁÂÃÄÅàáâãäåÒÓÔÕÖØòóôõöøÈÉÊËèéêëÇçÌÍÎÏìíîïÙÚÛÜùúûüÿÑñ()[]\'"~$&%*@ç!?;,:/\^¨€{}<>|+- .'),  'aaaaaaaaaaaaooooooooooooeeeeeeeecciiiiiiiiuuuuuuuuynn    --      c  ---    e      --_'));
    $url = str_replace(' ', '', $url);
    $url = str_replace('---', '-', $url);
    $url = str_replace('--', '-', $url);
    $url = trim($url,'-');
    return $url;
}

/**
 * Return a human readable filesize
 * @param string size in bytes
 * @return string
 */
function sizeToCleanSize($size)
{
    $units = array( 'B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
    $power = $size > 0 ? floor(log($size, 1024)) : 0;
    return number_format($size / pow(1024, $power), 7, '.', ',') . ' ' . $units[$power];
}

/**
 * Return a colored string in the console
 * @param string
 * @param color
 * @return string
 */
function colorize($string, $color) {
    $colors = array(
        'black'     => 30,
        'red'       => 31,
        'green'     => 32,
        'yellow'    => 33,
        'blue'      => 34,
        'purple'    => 35,
        'turquoise' => 36,
        'white'     => 37
    );

    return "\033[".$colors[$color]."m".$string."\033[0m";
}


/**
 * Return a color generated from the string
 * @param string
 * @return string
 */
function stringToColor($string) {
    $colors = array(
        0 => 'red',
        1 => 'purple',
        2 => 'indigo',
        3 => 'blue',
        4 => 'green',
        5 => 'orange',
        6 => 'yellow',
        7 => 'brown');

    $s = substr(base_convert(sha1($string), 15, 10), 0, 10);

    if($colors[$s%8]) {
        return $colors[$s%8];
    } else {
        return 'orange';
    }
}

/**
 * Strip tags and add a whitespace
 * @param string
 * @return string
 */
function stripTags($string)
{
    return strip_tags(preg_replace('/(<\/[^>]+?>)(<[^>\/][^>]*?>)/', '$1 $2', $string));
}

/**
 * Purify a string
 * @param string
 * @return string
 */
function purifyHTML($string)
{
    $config = \HTMLPurifier_Config::createDefault();
    $config->set('HTML.Doctype', 'HTML 4.01 Transitional');
    $config->set('Cache.SerializerPath', '/tmp');
    $config->set('HTML.DefinitionID', 'html5-definitions');
    $config->set('HTML.DefinitionRev', 1);
    if ($def = $config->maybeGetRawHTMLDefinition()) {
        $def->addElement('video', 'Block', 'Optional: (source, Flow) | (Flow, source) | Flow', 'Common', array(
          'src' => 'URI',
          'type' => 'Text',
          'width' => 'Length',
          'height' => 'Length',
          'poster' => 'URI',
          'preload' => 'Enum#auto,metadata,none',
          'controls' => 'Bool',
        ));
        $def->addElement('audio', 'Block', 'Optional: (source, Flow) | (Flow, source) | Flow', 'Common', array(
          'src' => 'URI',
          'preload' => 'Enum#auto,metadata,none',
          'muted' => 'Bool',
          'controls' => 'Bool',
        ));
        $def->addElement('source', 'Block', 'Flow', 'Common', array(
          'src' => 'URI',
          'type' => 'Text',
        ));
    }

    $purifier = new \HTMLPurifier($config);
    return $purifier->purify($string);
}

/**
 * Return the first two letters of a string
 * @param string
 * @return string
 */
function firstLetterCapitalize($string) {
    return ucfirst(strtolower(mb_substr($string, 0, 2)));
}