2014-11-26 19:47:05 +01:00
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<?php
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/*============================*/
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/* Gallery address definition */
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/*============================*/
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2014-05-22 06:14:38 +02:00
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2014-11-26 21:27:30 +01:00
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if (!empty($_SERVER['REQUEST_SCHEME'])) {
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$g_protocol = $_SERVER['REQUEST_SCHEME'];
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} elseif (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {
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$g_protocol = 'https';
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} else {
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$g_protocol = 'http';
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}
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$g_host = $_SERVER['HTTP_HOST'];
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$g_port = $_SERVER['SERVER_PORT'];
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$g_path = dirname($_SERVER['REQUEST_URI']);
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// remove default ports
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if (($g_protocol == 'https' && $g_port == '443') ||
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($g_protocol == 'http' && $g_port == '80')) {
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$g_port = '';
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} else {
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$g_port = ':' . $g_port;
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}
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if ($g_path[0] != '/') {
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$g_path = '/' . $g_path;
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}
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$gallery_link = $g_protocol . '://' . $g_host . $g_port . $g_path;
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2014-05-22 06:14:38 +02:00
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 19:47:05 +01:00
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/* Functions */
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 19:47:05 +01:00
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# Hardly inspired from here : codes-sources.commentcamarche.net/source/35937-creation-d-une-arborescenceI
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# Listing all files of a folder and sub folders.
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function ListFiles($gallery_link, &$content, $Folder, $SkipFileExts, $SkipObjects)
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{
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$dir = opendir($Folder);
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// Loop on all contained on the folder
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while (false !== ($Current = readdir($dir))) {
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if ($Current !='.' && $Current != '..' && in_array($Current, $SkipObjects) === false) {
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if (is_dir($Folder.'/'.$Current)) {
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ListFiles($gallery_link, $content, $Folder . '/' . $Current, $SkipFileExts, $SkipObjects);
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} else {
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$FileExt = strtolower(substr(strrchr($Current, '.'), 1));
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// Should we display this extension ?
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if (in_array($FileExt, $SkipFileExts) === false) {
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$current_adress = $gallery_link . "/" . $Folder.'/'. $Current;
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$content .= $current_adress. "\n";
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}
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}
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}
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}
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closedir($dir);
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return $content;
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}
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2014-02-25 10:24:36 +01:00
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2014-11-26 19:47:05 +01:00
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# Paul's Simple Diff Algorithm v 0.1 : http://paulbutler.org/archives/a-simple-diff-algorithm-in-php/
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function diff($old, $new)
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{
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$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)
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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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{
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echo '<pre>';
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print_r($array_to_display);
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echo '</pre>';
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}
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 19:47:05 +01:00
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/* Variables */
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 19:47:05 +01:00
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require("config-default.php");
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include("config.php");
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2014-02-25 10:24:36 +01:00
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2014-11-26 22:43:51 +01:00
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$content = "";
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$folder = "photos";
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$content = listFiles($gallery_link, $content, $folder, $SkipExts, $SkipObjects);
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if (is_writeable(".")) {
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$to_store = "";
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$old_files_list = "db_old_files"; //list of files in ./photos
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$db_feed_source = "db_feed_source";
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$db_rss_timestamp = "db_rss_timestamp";
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// Init files
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if (!file_exists($old_files_list)) {
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file_put_contents($old_files_list, "");
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}
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if (!file_exists($db_feed_source)) {
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file_put_contents($db_feed_source, "");
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}
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if (!file_exists($db_rss_timestamp)) {
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file_put_contents($db_rss_timestamp, "");
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}
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/*===================*/
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/* Computing */
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/*===================*/
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#Todo : ajouter une condition : dois-je regénérer le flux ou utiliser les anciens fichiers ?
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$temp = file_get_contents($db_feed_source);
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$last_rss_gen = file_get_contents($db_rss_timestamp);
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$current_time = time();
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// If the RSS generation is already launched, don't do a second generation at the same time
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if (($current_time - $last_rss_gen) > $rss_refresh_interval && file_exists("rss.locker") == false) {
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file_put_contents("rss.locker", "");
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file_put_contents($db_rss_timestamp, time());
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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"][$j] . "\n";
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}
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2014-11-26 19:47:05 +01:00
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}
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}
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}
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2014-11-26 22:43:51 +01:00
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// Add new elements at the top of the feed's source
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$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, $content);
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unlink("rss.locker");
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2014-11-26 19:47:05 +01:00
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}
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2014-11-26 22:43:51 +01:00
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$content = $temp;
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2014-11-26 19:47:05 +01:00
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}
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2014-11-26 21:47:38 +01:00
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 19:47:05 +01:00
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/* XML Gen */
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2014-02-25 10:24:36 +01:00
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/*===================*/
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2014-11-26 22:43:51 +01:00
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$temp = explode("\n", $content);
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2014-11-26 21:47:38 +01:00
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echo "<rss version='2.0'>\n<channel>";
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echo "<title>$title</title>";
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echo "<link>$gallery_link</link>";
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echo "<description>$description</description>\n";
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for ($i=0; $i < $nb_items_rss && $i < count($temp); $i++) {
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if (empty($temp[$i]))
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continue;
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echo "<item>\n";
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echo " <title>" . basename($temp[$i]) . "</title>\n";
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echo " <link>". $temp[$i] . "</link>\n";
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echo " <description><![CDATA[ <img src='" . $temp[$i] . "'> ]]></description>\n";
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echo "</item>\n";
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2014-11-26 19:47:05 +01:00
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}
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2014-11-26 21:47:38 +01:00
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echo "</channel></rss>\n";
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