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   1  <?php
   2  // function.blogroll.php - outputs a blogroll from your favorites at blo.gs
   3  // based on php blogroll by phil ringnalda - http://philringnalda.com/phpblogroll/
   4  
   5  function identify_function_blogroll () {
   6  $help = '
   7  <p>blogroll!
   8  <p>Based on phpblogroll by phil ringnalda - http://philringnalda.com/phpblogroll/
   9  <p>You will need a blogroll account from <a href="http://www.blo.gs">blo.gs</a> to use this.
  10  <p>Make sure bblog/compiled_templates/favorites.xml is writable by the webserver.
  11  <p>Sign up at blo.gs and then add your favorites to your favorites list (you\'ll be happier
  12   if you use a decent browser, since Opera/Mozilla will show a cute little plus in a
  13   circle for things you haven\'t added, and an x in a circle for things you\'ve already added,
  14   while IE will show a square box if it\'s added and "&oplus" if it isn\'t.
  15  
  16  Once you\'ve added your favorites to your list, click "settings" and check the box to make your
  17  list of favorites public. Save your settings, go back to the home page, and click "share".
  18  Down at the bottom of the page is a list of links to favorites in three flavors.
  19  Right click the "favorites.xml" and select "save target as" to save a copy of
  20  favorites.xml on your computer (you only have to save and upload it once <b>into compiled_templates</b>
  21  to prime the pump - after that it\'s automatic).
  22  While you are there, make a note of the number in the url,
  23  which is your user number - you\'ll need it.
  24  
  25  <p>Once you have uploaded your favorites.xml into bblog/compiled_templates and chmod 777\'d it you
  26  can put {blogroll userid=1234} in your template. Your userid being you blo.gs userid.';
  27  
  28  return array (
  29      'name'           =>'blogroll',
  30      'type'             =>'function',
  31      'nicename'     =>'Blogroll',
  32      'description'   =>'Displays a blo.gs blogroll',
  33      'authors'        =>'phil ringnalda',
  34      'licence'         =>'Free',
  35      'help'   => $help
  36    );
  37  }
  38  
  39  
  40  function smarty_function_blogroll($params,&$bBlog) {
  41      // ( todo: less/no globals! )
  42      global $blogroll_open_tags, $blogroll_temp, $blogroll_current_tag, $blogroll_weblog_index;
  43      global $blogroll_close_tags;
  44      global $blogroll_html_header, $blogroll_html_footer;
  45  
  46      if(is_numeric($params['userid'])) $userid = $params['userid'];
  47        else return "<p>You need to set your blo.gs user id like : {blogroll userid=1234}";
  48      ob_start();
  49  ?>
  50  <script type="text/javascript">
  51  /* called by the blogroll select list produced by blogroll.php,
  52     in a DOM-compliant browser creates a link and clicks it to
  53     set the referrer, otherwise just changes location.href */
  54  function gothere(where) {
  55    if(document.createElement){
  56      newLink = document.createElement("A");
  57      if (newLink.click){
  58        newLink.href = where.options[where.selectedIndex].value;
  59        theBod = document.getElementsByTagName("BODY");
  60        theBod[0].appendChild(newLink);
  61        newLink.click();
  62        }
  63      else{
  64        location.href = where.options[where.selectedIndex].value;
  65        }
  66      }
  67    else {
  68      location.href = where.options[where.selectedIndex].value;
  69      }
  70  }
  71  </script>
  72  <?php
  73  
  74  // local filename
  75  // we know that compiled_templates will always be writable
  76  $blogroll_xml_file = BBLOGROOT.'cache/favorites.xml';
  77  
  78  // remote file url
  79  $blogroll_xml_source = 'http://blo.gs/'.$userid.'/favorites.xml';
  80  // something that will always appear in the remote file if it returns any of your favorites
  81  $blogroll_xml_test = 'weblogUpdates';
  82  
  83  // fresh enough to use? give it a sniff
  84  if ( filemtime($blogroll_xml_file) < (time()-3900) ) {     // just over an hour
  85    if ( $blogroll_local_fq = fopen($blogroll_xml_file,"w") ){
  86      $blogroll_remote_fp = fopen($blogroll_xml_source,"r");
  87      $blogroll_remote_data = fread($blogroll_remote_fp, 100000);
  88      if (stristr($blogroll_remote_data, $blogroll_xml_test)){
  89        if ($blogroll_remote_fp && $blogroll_local_fq){
  90          fwrite($blogroll_local_fq,$blogroll_remote_data);
  91          }
  92        }
  93      fclose($blogroll_remote_fp);
  94      fclose($blogroll_local_fq);
  95      }
  96    }
  97  
  98  // forget the old filemtime
  99  clearstatcache();
 100  
 101  // what to write before the first link or option
 102  $blogroll_html_header = '<form action=""><select onChange="gothere(this)" class="selectmenu">';
 103  $blogroll_html_header .= '<option value="">' . date("n/d g:ia",filemtime($blogroll_xml_file)) . '</option>';
 104  
 105  // what to write after the last link or option
 106  $blogroll_html_footer = '</select></form>';
 107  
 108  
 109  $blogroll_open_tags = array(
 110      'WEBLOGUPDATES' => '<WEBLOGUPDATES>',
 111      'WEBLOG' => '<WEBLOG>');
 112  
 113  $blogroll_close_tags = array(
 114      'WEBLOGUPDATES' => '</WEBLOGUPDATES>');
 115  
 116  // declare the character set - UTF-8 is the default
 117  $blogroll_type = 'ISO-8859-1';
 118  
 119  // create our parser
 120  $blogroll_xml_parser = xml_parser_create($blogroll_type);
 121  
 122  // set some parser options
 123  xml_parser_set_option($blogroll_xml_parser, XML_OPTION_CASE_FOLDING, true);
 124  xml_parser_set_option($blogroll_xml_parser, XML_OPTION_TARGET_ENCODING, $blogroll_type);
 125  
 126  // this tells PHP what functions to call when it finds an element
 127  // these funcitons also handle the element's attributes
 128  xml_set_element_handler($blogroll_xml_parser, 'blogrollStartElement','blogrollEndElement');
 129  
 130  
 131  if ($blogroll_fp = @fopen($blogroll_xml_file, 'r')) {
 132    // loop through the file and parse baby!
 133    while ($blogroll_data = fread($blogroll_fp, 4096)) {
 134      if (!xml_parse($blogroll_xml_parser, $blogroll_data, feof($blogroll_fp))) {
 135        die(sprintf( "XML error: %s at line %d\n\n",
 136        xml_error_string(xml_get_error_code($blogroll_xml_parser)),
 137        xml_get_current_line_number($blogroll_xml_parser)));
 138        }
 139      }
 140      }
 141  else {
 142  
 143    echo"<option value=''>Temporarily 404'd</option>";
 144    }
 145  
 146  xml_parser_free($blogroll_xml_parser);
 147  $o = ob_get_contents();
 148  ob_end_clean();
 149  return $o;
 150  
 151  }
 152  function blogrollStartElement($parser, $name, $attrs=''){
 153      global $blogroll_open_tags, $blogroll_temp, $blogroll_current_tag, $blogroll_weblog_index;
 154      $blogroll_current_tag = $name;
 155      if ($format = $blogroll_open_tags[$name]){
 156      switch($name){
 157          case 'WEBLOGUPDATES':
 158              //starting to parse
 159              $blogroll_weblog_index = -1;
 160          break;
 161          case 'WEBLOG':
 162              //indivdual blog
 163              $blogroll_weblog_index++;
 164              $blogroll_temp[$blogroll_weblog_index]['name'] = htmlentities(addslashes((strlen($attrs['NAME']) > 19) ? substr($attrs['NAME'], 0, 17) . "..." : $attrs['NAME']));
 165              $blogroll_temp[$blogroll_weblog_index]['url'] = $attrs['URL'];
 166          break;    
 167          default:
 168          break;
 169      }
 170      }
 171  }
 172  
 173  function blogrollEndElement($parser, $name, $attrs=''){
 174      global $blogroll_close_tags, $blogroll_temp, $blogroll_current_tag;
 175      if ($format = $blogroll_close_tags[$name]){
 176      switch($name){
 177          case 'WEBLOGUPDATES':
 178          blogrollWriteLinks();
 179          break;
 180          default:
 181          break;
 182      }
 183      }
 184  }
 185  
 186  
 187  function blogrollWriteLinks(){
 188      global $blogroll_temp, $blogroll_html_header, $blogroll_html_footer;
 189      echo "<script type=\"text/javascript\">\n";
 190      echo "document.write('$blogroll_html_header');\n";
 191      for($i = 0; $i < sizeof($blogroll_temp); $i++){
 192          echo "document.write('<option value=\"" . $blogroll_temp[$i]['url'] . "\">" . $blogroll_temp[$i]['name'] . "</option>');\n";
 193          }
 194      echo "document.write('$blogroll_html_footer');\n";
 195      echo "</script>\n";
 196      echo "<noscript>\n";
 197      for($i = 0; $i < sizeof($blogroll_temp); $i++){
 198          echo "<a href=\"" . $blogroll_temp[$i]['url']."\">" . $blogroll_temp[$i]['name'] . "</a><br>\n";
 199          }
 200      echo "</noscript>\n";    
 201  }
 202  
 203  
 204  
 205  ?>