zira/zira/helper.php

<?php
/**
 * Zira project
 * helper.php
 * (c)2015 https://github.com/ziracms/zira
 */

namespace Zira;

class Helper {
    protected static $_add_language_to_url = true;

    public static function setAddingLanguageToUrl($add_language_to_url) {
        self::$_add_language_to_url = $add_language_to_url;
    }

    public static function html($str) {
        return htmlspecialchars($str, ENT_QUOTES);
    }

    public static function url($path,$absolute=false,$detect_protocol=false) {
        $url = '';
        if ($absolute && $detect_protocol) {
            $port = isset($_SERVER['SERVER_PORT']) ? $_SERVER['SERVER_PORT'] : 80;
            $protocol = $port == 443 ? 'https:' : 'http:';
            if ($port!=443 && isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']=='on') $protocol = 'https:';
            $url .= $protocol;
        }
        if ($absolute) $url .= '//' . $_SERVER['HTTP_HOST'];
        $base_url = trim(BASE_URL,'/');
        if (!empty($base_url)) $url .= '/'.$base_url;
        if (!Config::get('clean_url')) {
            $url .= '/index.php';
        }
        $path=trim($path,'/');

        if (self::$_add_language_to_url &&
            !Router::isAllLanguagesRoute($path) &&
            Locale::getLanguage() &&
            Config::get('languages') &&
            count(Config::get('languages'))>1 &&
            (Locale::getLanguage()!=Config::get('language') || !empty($path))
        ) {
            $url .= '/'.Locale::getLanguage();
        }

        $url .= '/'.$path;
        if ($url != '/') $url = rtrim($url,'/');

        return $url;
    }

    public static function baseUrl($url,$absolute=false,$detect_protocol=false) {
        $prefix = '';
        if ($absolute && $detect_protocol) {
            $port = isset($_SERVER['SERVER_PORT']) ? $_SERVER['SERVER_PORT'] : 80;
            $protocol = $port == 443 ? 'https:' : 'http:';
            if ($port!=443 && isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']=='on') $protocol = 'https:';
            $prefix .= $protocol;
        }
        if ($absolute) $prefix .= '//' . $_SERVER['HTTP_HOST'];
        return $prefix . rtrim(BASE_URL,'/') . '/' .ltrim($url,'/');
    }

    public static function assetUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . ASSETS_DIR . '/' .$url;
    }

    public static function assetThemeUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . THEMES_DIR . '/' . View::getTheme() . '/' . ASSETS_DIR . '/' .$url;
    }

    public static function cssUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . ASSETS_DIR . '/' . CSS_DIR . '/' .$url;
    }

    public static function cssThemeUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . THEMES_DIR . '/' . View::getTheme() . '/' . ASSETS_DIR . '/' . CSS_DIR . '/' .$url;
    }

    public static function jsUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . ASSETS_DIR . '/' . JS_DIR . '/' .$url;
    }

    public static function jsThemeUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . THEMES_DIR . '/' . View::getTheme() . '/' . ASSETS_DIR . '/' . JS_DIR . '/' .$url;
    }

    public static function imgUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . ASSETS_DIR . '/' . IMAGES_DIR . '/' .$url;
    }

    public static function imgThemeUrl($url) {
        return rtrim(BASE_URL,'/') . '/' . THEMES_DIR . '/' . View::getTheme() . '/' . ASSETS_DIR . '/' . IMAGES_DIR . '/' .$url;
    }
    
    public static function fileUrl($path) {
        if (is_numeric($path)) return self::url('file/'.$path);
        else return self::baseUrl($path);
    }

    public static function tag_short($name, array $attributes = null) {
        if (!$attributes) $attributes = array();
        $html = '<'.self::html($name);
        foreach($attributes as $k=>$v) {
            $html .= ' '.self::html($k) . '="' . self::html($v) . '"';
        }
        $html .= ' />';
        return $html;
    }

    public static function tag_open($name, array $attributes = null) {
        if (!$attributes) $attributes = array();
        $html = '<'.self::html($name);
        foreach($attributes as $k=>$v) {
            $html .= ' '.self::html($k) . '="' . self::html($v) . '"';
        }
        $html .= '>';
        return $html;
    }

    public static function tag_close($name) {
        return '</'.self::html($name).'>';
    }

    public static function tag($name, $value = null, array $attributes = null) {
        $html = self::tag_open($name, $attributes);
        if ($value!==null) $html .= self::html($value);
        $html .= self::tag_close($name);
        return $html;
    }

    public static function nl2br($str) {
        return nl2br(trim($str));
    }

    public static function utf8BadMatch($value) {
        return preg_match('/[\x{10000}-\x{10FFFF}]/u', $value);
    }

    public static function utf8Clean($content) {
        return preg_replace('/[\x{10000}-\x{10FFFF}]/u', ' ', $content);
    }

    public static function utf8Entity($content) {
        if (preg_match_all('/[\x{10000}-\x{10FFFF}]/u', $content, $m)) {
            foreach($m[0] as $c) {
                $h = dechex(self::utf8Ord($c));
                $e = '&#x' . $h . ';';
                $content = preg_replace('/[\x{'.$h.'}]/u', $e, $content);
            }
        }
        return $content;
    }

    public static function utf8Ord($c) {
        if (ord($c[0]) >=0 && ord($c[0]) <= 127)
        return ord($c[0]);
        if (ord($c[0]) >= 192 && ord($c[0]) <= 223)
        return (ord($c[0])-192)*64 + (ord($c[1])-128);
        if (ord($c[0]) >= 224 && ord($c[0]) <= 239)
        return (ord($c[0])-224)*4096 + (ord($c[1])-128)*64 + (ord($c[2])-128);
        if (ord($c[0]) >= 240 && ord($c[0]) <= 247)
        return (ord($c[0])-240)*262144 + (ord($c[1])-128)*4096 + (ord($c[2])-128)*64 + (ord($c[3])-128);
        if (ord($c[0]) >= 248 && ord($c[0]) <= 251)
        return (ord($c[0])-248)*16777216 + (ord($c[1])-128)*262144 + (ord($c[2])-128)*4096 + (ord($c[3])-128)*64 + (ord($c[4])-128);
        if (ord($c[0]) >= 252 && ord($c[0]) <= 253)
        return (ord($c[0])-252)*1073741824 + (ord($c[1])-128)*16777216 + (ord($c[2])-128)*262144 + (ord($c[3])-128)*4096 + (ord($c[4])-128)*64 + (ord($c[5])-128);
        if (ord($c[0]) >= 254 && ord($c[0]) <= 255)    //  error
        return FALSE;
        return 0;
    }
    
    public static function basename($path) {
        if (preg_match('#^.*[\\\\/]([^\\\\/]+)$#s', $path, $m)) {
            return $m[1];
        }
        return $path;
    }
    
    public static function urlencode($url, $isAbsolute = false) {
        $url = rawurlencode($url);
        $url = str_ireplace('%2F', '/', $url);
        if ($isAbsolute) $url = str_ireplace('%3A', ':', $url);
        return $url;
    }

    public static function isCurrentDay($time) {
        $day_str = date(Config::get('date_format'), $time);
        $current_str = date(Config::get('date_format'), time());
        return $day_str == $current_str;
    }

    public static function datetime($time) {
        return (self::isCurrentDay($time) ? date('H:i', $time) : date(Config::get('date_format'), $time));
    }
    
    public static function backtrace($return=false) {
        $backtrace = debug_backtrace();
        if (!$return) {
            echo self::tag_open('pre').print_r(array_shift($backtrace), true).self::tag_close('pre');
        } else {
            return print_r(array_shift($backtrace), true);
        }
    }
}