137 lines
No EOL
4.2 KiB
PHP
137 lines
No EOL
4.2 KiB
PHP
<?php
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/*===================*/
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/*Functions*/
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/*===================*/
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# Hardly inspired from here : codes-sources.commentcamarche.net/source/35937-creation-d-une-arborescenceI
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# Listing all files of a folder and sub folders.
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function ListFiles($gallery_link, &$content, $Folder, $SkipFileExts, $SkipObjects)
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{
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$dir = opendir($Folder);
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while (false !== ($Current = readdir($dir))) // Loop on all contained on the folder
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{
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if ($Current !='.' && $Current != '..' && in_array($Current, $SkipObjects)===false)
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{
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if(is_dir($Folder.'/'.$Current)) // If the current element is a folder
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{
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ListFiles($gallery_link, $content, $Folder.'/'.$Current, $SkipFileExts, $SkipObjects); // Recursivity
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}
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else
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{
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$FileExt = strtolower(substr(strrchr($Current ,'.'),1));
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if (in_array($FileExt, $SkipFileExts)===false) // Should we display this extension ?
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$current_adress = $gallery_link . "/" . $Folder.'/'. $Current;
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#debug echo "display current_adress : ". $current_adress . "<br>";
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$content .= $current_adress. "\n";
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}
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}
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}
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closedir($dir);
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return $content;
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}
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# Paul's Simple Diff Algorithm v 0.1 : http://paulbutler.org/archives/a-simple-diff-algorithm-in-php/
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function diff($old, $new){
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$matrix = array();
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$maxlen = 0;
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foreach($old as $oindex => $ovalue){
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$nkeys = array_keys($new, $ovalue);
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foreach($nkeys as $nindex){
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$matrix[$oindex][$nindex] = isset($matrix[$oindex - 1][$nindex - 1]) ?
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$matrix[$oindex - 1][$nindex - 1] + 1 : 1;
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if($matrix[$oindex][$nindex] > $maxlen){
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$maxlen = $matrix[$oindex][$nindex];
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$omax = $oindex + 1 - $maxlen;
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$nmax = $nindex + 1 - $maxlen;
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}
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}
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}
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if($maxlen == 0) return array(array('d'=>$old, 'i'=>$new));
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return array_merge(
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diff(array_slice($old, 0, $omax), array_slice($new, 0, $nmax)),
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array_slice($new, $nmax, $maxlen),
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diff(array_slice($old, $omax + $maxlen), array_slice($new, $nmax + $maxlen)));
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}
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function print_array($array_to_display) {
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echo '<pre>';
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print_r($array_to_display);
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echo '</pre>';
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}
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/*===================*/
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/*Variables*/
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/*===================*/
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require("config.php");
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#$content = "";
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$old_files_list = "db_old_files"; //list of files in ./photos
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$new_files_list = "new_files_list";
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$db_feed_source = "db_feed_source";
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$Folder = 'photos';
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$content = ListFiles($gallery_link, $content, $Folder, $SkipExts, $SkipObjects);
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$to_store = "";
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// Init files
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if (!file_exists($old_files_list))
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file_put_contents($old_files_list, "");
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if (!file_exists($db_feed_source))
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file_put_contents($db_feed_source, "");
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/*===================*/
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/*Computing*/
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/*===================*/
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#Todo : ajouter une condition : dois-je regénérer le flux ou utiliser les anciens fichiers ?
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// Load the list from files.
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$old_files_list_content = explode("\n", file_get_contents($old_files_list));
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$new_files_list_content = explode("\n", $content); #debug
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// Generate and stock new elements
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$differences = diff($old_files_list_content, $new_files_list_content);
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for ($i=0; $i < count($differences); $i++) {
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if (is_array($differences[$i])){
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for ($j=0; $j < count($differences[$i]["i"]); $j++) {
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if (strlen($differences[$i]["i"][$j]) > 2)
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$to_store .= $differences[$i]["i"][$j] . "\n";
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}
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}
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}
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//Add new elements at the top of the feed's source
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$temp = file_get_contents($db_feed_source);
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$temp = $to_store . $temp;
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file_put_contents($db_feed_source, $temp);
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// Store the current file list for the next generation
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file_put_contents($old_files_list, $content);
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/*===================*/
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/*XML Gen*/
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/*===================*/
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$temp = explode("\n", $temp);
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$pieceOfTitle;
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$titleLenght;
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echo "
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<rss version=\"2.0\">
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<channel>
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<title>".$title."</title>
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<link>".$gallery_link."</link>
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<description>".$description."</description>
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";
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for ($i=0; $i < $nb_items_rss; $i++) {
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$pieceOfTitle = strrchr ($temp[$i] , "/");
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$titleLenght = strlen($pieceOfTitle) - strlen(strrchr($pieceOfTitle, "."));
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echo
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"<item>
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<title>" . substr($pieceOfTitle, 1, $titleLenght-1) . "</title>
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<link>". $temp[$i] . "</link>
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<description>
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<![CDATA[ <img src=\"" . $temp[$i] . "\"> ]]>
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</description>
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</item>"
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;
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if ($temp[$i+1] == NULL)
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break;
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}
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echo"
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</channel>
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</rss>
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";
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?>
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