www-apps/pmwiki/cookbook/XMLPageStore/XMLPageStore.php

   1 <?php if (!defined('PmWiki')) exit();
   2
   3 /*
   4     XMLPageStore
   5
   6     Copyright 2011 Anomen (ludek_h@seznam.cz)
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published
   9     by the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11 */
  12 $RecipeInfo['XMLPageStore']['Version'] = '2012-12-27';
  13
  14 SDV($EnablePageStoreXML,false);
  15
  16
  17 class XMLPageStore extends PageStore {
  18
  19   function read_xml($data, $since=0)
  20   {
  21     global $Charset;
  22     $p = xml_parser_create();
  23     xml_parser_set_option($p,XML_OPTION_CASE_FOLDING, false);
  24     xml_parser_set_option($p,XML_OPTION_TARGET_ENCODING, $Charset);
  25
  26 #    bug http://bugs.php.net/bug.php?id=33240
  27 #    xml_parser_set_option($p,XML_OPTION_SKIP_WHITE, true);
  28
  29     xml_parse_into_struct($p, $data, $vals, $index);
  30     xml_parser_free($p);
  31     foreach($vals as $v) {
  32         if (($v['type'] == 'complete') && ($v['level'] == 2)) {
  33             $k = $v['tag'];
  34             $t = $v['attributes']['time'];
  35             $p = $v['attributes']['prev'];
  36
  37
  38             if (!empty($t)) {
  39                 if ($since > 0 && $t < $since) {
  40                     continue;
  41                 }
  42                 $k = "$k:$t";
  43             }
  44             if (!empty($p)) {
  45                 $k = "$k:$p:";
  46             }
  47             $page[$k] = $v['value'];
  48         }
  49      }
  50     return @$page;
  51   }
  52
  53   function read($pagename, $since=0) {
  54     $pagefile = $this->pagefile($pagename);
  55     if ($pagefile && ($fp=@fopen($pagefile, "r"))) {
  56       while (!feof($fp)) {
  57         $line = fgets($fp, 512);
  58         $isXML = (substr($line,0,5) == '<?xml') || (substr(ltrim($line),0,5) == '<page');
  59         if (trim($line) != '') {
  60             break; // we found non-empty line
  61         }
  62       }
  63         if ($isXML) {
  64             fseek($fp, 0, SEEK_SET);
  65             $pagefilesize = filesize($pagefile);
  66             $data = fread($fp, $pagefilesize);
  67             @fclose($fp);
  68             return $this->read_xml($data, $since);
  69         } else {
  70             @fclose($fp);
  71             return parent::read($pagename,$page);
  72         }
  73      }
  74   }
  75
  76   function write($pagename,$page) {
  77     global $EnablePageStoreXML;
  78     ($EnablePageStoreXML == true) ? $this->write_xml($pagename,$page) : parent::write($pagename,$page);
  79   }
  80
  81   function write_xml($pagename,$page) {
  82     global $Now, $Version, $Charset;
  83     $page['name'] = $pagename;
  84     $page['time'] = $Now;
  85     $page['host'] = $_SERVER['REMOTE_ADDR'];
  86     $page['agent'] = @$_SERVER['HTTP_USER_AGENT'];
  87     $page['rev'] = @$page['rev']+1;
  88     unset($page['version']); unset($page['newline']);
  89     uksort($page, 'CmpPageAttr');
  90     $s = false;
  91     $pagefile = $this->pagefile($pagename);
  92     $dir = dirname($pagefile); mkdirp($dir);
  93     if ($pagefile && ($fp=fopen("$pagefile,new","w"))) {
  94       $x = "<?xml version=\"1.0\" encoding=\"$Charset\"?>\n<page xmlns=\"http://www.pmwiki.org/cookbook/xmlpage\" version=\"$Version\">\n";
  95       $s = true && fputs($fp, $x); $sz = strlen($x);
  96       foreach($page as $k=>$v)
  97         if ($k > '' && $k{0} != '=') {
  98           $v = htmlspecialchars($v, ENT_NOQUOTES, $Charset);
  99           if (preg_match("/^([a-z]+)(?::(\d+))(?::(\d+):)?$/", $k, $m)) {
 100             $p = empty($m[3]) ? "" : " prev=\"${m[3]}\"";
 101             $x = "<${m[1]} time=\"${m[2]}\"$p>$v</${m[1]}>\n";
 102           } else {
 103             $x = "<$k>$v</$k>\n";
 104           }
 105           $s = $s && fputs($fp, $x); $sz += strlen($x);
 106         }
 107       $x = "</page>\n";
 108       $s = $s && fputs($fp, $x); $sz += strlen($x);
 109
 110       $s = fclose($fp) && $s;
 111       $s = $s && (filesize("$pagefile,new") > $sz * 0.95);
 112       if (file_exists($pagefile)) $s = $s && unlink($pagefile);
 113       $s = $s && rename("$pagefile,new", $pagefile);
 114     }
 115     $s && fixperms($pagefile);
 116     if (!$s)
 117       Abort("Cannot write page to $pagename ($pagefile)...changes not saved");
 118     PCache($pagename, $page);
 119   }
 120
 121 }
 122
 123 function ConvertXML() {
 124   global $WikiDir;
 125   global $EnablePageStoreXML;
 126   $pagelist = $WikiDir->ls();
 127   $pagelist = array_unique($pagelist);
 128   sort($pagelist);
 129   $pagecount = count($pagelist);
 130
 131   echo "
 132     <html>
 133     <head>
 134     <title>Convert pages from/to XML</title>
 135     </head>
 136     <body>
 137     <h2>Convert existing pages</h2>
 138     <p>I'm now converting ";
 139   echo ($EnablePageStoreXML) ? "<b>to</b> " : "<b>from</b> ";
 140   echo "XML the files (pages) you have stored in your wiki. When this is finished
 141     you can get rid of the <tt>ConvertXML();</tt> line in your
 142     local/config.php</p>";
 143   if ($pagelist) {
 144     foreach($pagelist as $p) {
 145       echo ($EnablePageStoreXML) ? "<li>Converting to XML: $p</li>\n" : "<li>Converting from XML: $p</li>\n";
 146       $page = ReadPage($p);
 147       WritePage($p,$page);
 148     }
 149   }
 150   echo "<p>Converted $pagecount pages.</p>\n";
 151   echo "<p>Now you can get rid of the <tt>ConvertXML();</tt> line in your local/config.php</p>
 152                  </body></html>\n";
 153   exit(0);
 154 }