wallabag/inc/functions.php

<?php

function url(){
  $protocol = "http";
  if(isset($_SERVER['HTTPS']))
    if($_SERVER['HTTPS'] != "off")
      $protocol = "https";

  return $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}

function generate_page($url,$title,$content) {
    raintpl::$tpl_dir = './tpl/'; // template directory
    raintpl::$cache_dir = "./cache/"; // cache directory
    raintpl::$base_url = url(); // base URL of blog
    raintpl::configure( 'path_replace', false );
    raintpl::configure('debug', false);

    $tpl = new raintpl(); //include Rain TPL

    $tpl->assign( "url", $url);
    $tpl->assign( "title", $title);
    $tpl->assign( "content", $content);

    $tpl->assign( "version", VERSION);

    $tpl->draw( "index"); // draw the template
}

// function define to retrieve url content
function get_external_file($url, $timeout) {
    // spoofing FireFox 18.0
    $useragent="Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";

    if  (in_array  ('curl', get_loaded_extensions())) {
        // Fetch feed from URL
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_HEADER, false);

        // FeedBurner requires a proper USER-AGENT...
        curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
        curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
        curl_setopt($curl, CURLOPT_USERAGENT, $useragent);

        $data = curl_exec($curl);

        $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);

        $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);

        curl_close($curl);
    } else {

        // create http context and add timeout and user-agent
        $context = stream_context_create(array('http'=>array('timeout' => $timeout, // Timeout : time until we stop waiting for the response.
                                                                                    'header'=> "User-Agent: ".$useragent, // spoot Mozilla Firefox
                                                                                    'follow_location' => true
                                                        )));

        // only download page lesser than 4MB
        $data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
        //  echo "<pre>http_response_header : ".print_r($http_response_header);

        if(isset($http_response_header) and isset($http_response_header[0])) {
            $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
        }
    }

    // if response is not empty and response is OK
    if (isset($data) and isset($httpcodeOK) and $httpcodeOK ) {

        // take charset of page and get it
        preg_match('#<meta .*charset=.*>#Usi', $data, $meta);

        // if meta tag is found
        if (!empty($meta[0])) {
            // retrieve encoding in $enc
            preg_match('#charset="?(.*)"#si', $meta[0], $enc);

            // if charset is found set it otherwise, set it to utf-8
            $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';

        } else {
            $html_charset = 'utf-8';
            $enc[1] = '';
        }

        // replace charset of url to charset of page
        $data = str_replace('charset='.$enc[1], 'charset='.$html_charset, $data);

        return $data;
    }
    else {
        return FALSE;
    }
}

function rel2abs($rel, $base)
{
    /* return if already absolute URL */
    if (parse_url($rel, PHP_URL_SCHEME) != '') return $rel;

    /* queries and anchors */
    if ($rel[0]=='#' || $rel[0]=='?') return $base.$rel;

    /* parse base URL and convert to local variables:
       $scheme, $host, $path */
    extract(parse_url($base));

    /* remove non-directory element from path */
    $path = preg_replace('#/[^/]*$#', '', $path);

    /* destroy path if relative url points to root */
    if ($rel[0] == '/') $path = '';

    /* dirty absolute URL */
    $abs = "$host$path/$rel";

    /* replace '//' or '/./' or '/foo/../' with '/' */
    $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
    for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}

    /* absolute URL is ready! */
    return $scheme.'://'.$abs;
}

// $str=preg_replace('#(href|src)="([^:"]*)("|(?:(?:%20|\s|\+)[^"]*"))#','$1="http://wintermute.com.au/$2$3',$str);

function absolutes_links($data, $base) {
    // cherche les balises 'a' qui contiennent un href
    $matches = array();
    preg_match_all('#(href|src)="([^:"]*)("|(?:(?:%20|\s|\+)[^"]*"))#Si', $data, $matches, PREG_SET_ORDER);

    // ne conserve que les liens ne commençant pas par un protocole « protocole:// » ni par une ancre « # »
    foreach($matches as $i => $link) {
        $link[1] = trim($link[1]);

        if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1]) ) {

            $absolutePath=rel2abs($link[2],$base);

            $data = str_replace($matches[$i][2], $absolutePath, $data);
        }

    }
    return $data;
}

?>