get-url.php

   1 #!/usr/bin/env php
   2 <?php
   3
   4 function extract_links($url) {
   5     $doc = new DOMDocument();
   6     @$doc->loadHTMLFile($url);
   7     $xpath = new DOMXPath($doc);
   8     return $xpath->query('//a');
   9 }
  10
  11 if (!isset($_SERVER['argv'][1])) {
  12     echo <<<EOF
  13 Usage: php get-url.php version
  14
  15 EOF;
  16     exit(1);
  17 }
  18 $install_version = $_SERVER['argv'][1];
  19
  20 $url_mirror = 'http://us2.php.net';
  21 $url_releases = $url_mirror . '/releases/';
  22 $url_downloads = $url_mirror . '/downloads.php';
  23 $url_qa = 'http://qa.php.net';
  24
  25 $link_sets = array(
  26     extract_links($url_releases),
  27     extract_links($url_downloads),
  28     extract_links($url_qa)
  29 );
  30 $index = array();
  31
  32 foreach ($link_sets as $links) {
  33     foreach ($links as $link) {
  34         $url = $link->getAttribute('href');
  35         if (!$url) continue;
  36         $result = preg_match('#/php-([^-]+?)\.tar\.gz#', $url, $matches);
  37         if (!$result) continue;
  38         list($full, $version) = $matches;
  39         $url = str_replace('/from/a/mirror', '/from/this/mirror', $url); // make download ready
  40         if ($url[0] == '/') $url = $url_mirror . $url; // heuristic assumes absolute paths are used
  41         $index[$version] = $url;
  42     }
  43 }
  44
  45 // maybe add qa support
  46
  47 if (!isset($index[$install_version])) {
  48     fwrite(STDERR, "Could not find $install_version\n");
  49     exit(1);
  50 }
  51
  52 echo $index[$install_version];
  53