view php/pool.php @ 2376:c41caaa96633

Some fixes for #90. Also a failsafe loop if the server never responds with meaningul information from saves (for instance, running only on apache or basic http servers). More changes to pythonServer for python 3.5. Please check if still valid on 2.7

<?php
// This works out the pool of pages to force the browser to use from the master pool set by 'modifying' the XML file
//

// This scripts lists all participated pages and ranks them by lowest occurence first
// The script then removes from the list any pages which have been completed more times than the lowest occuring test page
// If the number of pages left is less than the number of pages requested from the poolSize, then those that were
// selected will have the alwaysInclude attribute set to true to ensure the next iteration will be selected. Then the next
// least occuring pages are re-added. This continues until number of testPages >= poolSize.

// The reference will always point to the original master XML file.

include 'rel2abs.php';

// MODIFY THE FOLLOWING LINE TO POINT TO YOUR TEST FILE
$master_file = "../tests/pool.xml";
// Note this is relative to the PHP location

// First set up the store with all the test page key nodes
$pages = array();
$master_xml = simplexml_load_string(file_get_contents($master_file, FILE_TEXT));
if ($master_xml) {
    if (!isset($master_xml->setup["poolSize"]))
    {
        echo file_get_contents($master_file, FILE_TEXT);
        return;
    }
    $poolSize = $master_xml->setup["poolSize"];
    foreach($master_xml->page as $pageInstance) {
        $id = (string)$pageInstance['id'];
        $pages[$id] = 0;
    }
}

$waet_url = rel2abs("pool.php","http://".$_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']);

$saves = glob("../saves/*.xml");
if (is_array($saves))
{
    foreach($saves as $filename) {
        $xml_object = simplexml_load_string(file_get_contents($filename, FILE_TEXT));
        if($xml_object) {
            // First we must check the saves match the master URL
            $waet = $xml_object->waet[0];
            if (urldecode($waet["url"])==$waet_url) {
                // This save is a save from the master XML
                // Count which pages have been added
                foreach($xml_object->page as $page) {
                    $id = (string)$page['ref'];
                    $pages[$id] = $pages[$id] + 1;
                }
            }
        }
    }
}

// Now we have a list of pages, sorted from low to high
// Create the new prototype tree
$orig_doc = new DOMDocument;
$orig_doc->loadXML(file_get_contents($master_file, FILE_TEXT));
$orig_doc->schemaValidate("../xml/test-schema.xsd");
$new_doc = new DOMDocument;
$new_doc->formatOutput = true;
//<waet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="test-schema.xsd">
$root = $new_doc->createElement('waet');
$root->setAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
$root->setAttribute("xsi:noNamespaceSchemaLocation","test-schema.xsd");
$root = $new_doc->appendChild($root);

// Copy over the <setup> node
$dom_setup = $new_doc->importNode(dom_import_simplexml($master_xml->setup),true);
$root->appendChild($dom_setup);

// We must now extract the number which have been performed the least
$rot_pages = array();
foreach($pages as $key => $var)
    if(array_key_exists($var,$rot_pages)) {
        array_push($rot_pages[$var],$key);
    } else {
        $rot_pages[$var] = array($key);
    }
ksort($rot_pages);
$Keys = array_keys($rot_pages);

// Pages are grouped into an array based on the number of page initiations ($rot_pages)
// $Keys is an array of the sorted key maps
$pageList = $new_doc->getElementsByTagName("page");
$iter = 0;
while ($pageList->length < $poolSize) {
    if ($iter > 0) {
        // We are adding more than one set of pages, make all current always include
        foreach($pageList as $page) {
            $page->setAttribute("alwaysInclude","true");
        }
    }
    foreach($rot_pages[$Keys[$iter]] as $pageId) {
        // We have the pages to add as a $pageId
        // Now COPY
        $dom_page = $orig_doc->getElementById($pageId);
        $dom_page = $new_doc->importNode($dom_page,true);
        $root->appendChild($dom_page);
    }
    $iter++;
    $pageList = $new_doc->getElementsByTagName("page");
}

echo $new_doc->saveXML();

?>