<?php

/**
 * @package system
 *
 */

/**
 * Redirect the browser to specific location
 * from symfony
 */

function redirect ($url)
{
    // Just make sure.
    $url = str_replace('Location:', null, $url);

    if (headers_sent($filename, $line)) {
        echo "<h1>Error: No se puede redireccionar a <a href=\"$url\">$url</a></h1><p>El Output ya inicio en $filename en la linea $line</p>";
        exit;
    }

    // convert idn back to ascii for redirect

    if (function_exists('idn_to_ascii')) {
        $root = parse_url(URL);
        $host = $root['host'];
        $url  = str_replace($host, idn_to_ascii($host), $url);
    }

    header('Status: 302 Found');
    header('Expires: Mon, 12 Dec 1982 06:00:00 GMT');
    header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
    header('Cache-Control: no-cache, must-revalidate, max-age=0');
    header('Pragma: no-cache');
    header("Location: $url");

    exit;
}

//Check if constant exist

function define_safe($name, $value)
{
    if (!defined($name)) {
        define($name, $value);
    }
}

function stripAccents($string){
    $a = array('á','é','í','ó','ú','Á','É','Í','Ó','Ú','Ñ','ñ');
    $b = array('a','e','i','o','u','A','E','I','O','U','N','n');    
    return str_replace($a, $b, $string);
}
function doUrlName($string){
    $url = stripAccents($string);
    $url = preg_replace("![^a-z0-9]+!i", "-", $url);
    $url = strtolower($url);
    echo $url;
}

function doUrlNameCli($string){
    $url = stripAccents($string);
    $url = preg_replace("![^a-z0-9]+!i", "-", $url);
    $url = strtolower($url);
    return $url;
}

function truncate($str, $len) {
      $tail = max(0, $len-10);
      $trunk = substr($str, 0, $tail);
      $trunk .= strrev(preg_replace('~^..+?[\s,:]\b|^...~', '...', strrev(substr($str, $tail, $len-$tail))));
      return $trunk;
    }