random gallery block

msimonds · Regular Joined: Jul 15, 2003 Posts: 56 Location: Dallas

this block pulls random pics from all galleries that I have running on my site for the Rant Girl of the month. I was wondering if there was any way to modify this block to pull just the newest/current gallery that is on the site. Here is the code:

Code:

<?php
/*
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2001 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

/*
* This block selects a random photo for display. It will only display photos
* from albums that are visible to the public. It will not display hidden
* photos.
*
* Once a day (or whatever you set CACHE_EXPIRED to) we scan all albums and
* create a cache file listing each public album and the number of photos it
* contains. For all subsequent attempts we use that cache file. This means
* that if you change your albums around it may take a day before this block
* starts (or stops) displaying them.
*/

// Hack prevention.
if (!empty($HTTP_GET_VARS["GALLERY_BASEDIR"]) ||
   !empty($HTTP_POST_VARS["GALLERY_BASEDIR"]) ||
   !empty($HTTP_COOKIE_VARS["GALLERY_BASEDIR"])) {
print "Security violation\n";
exit;
}

$GALLERY_BASEDIR = "/home/rantman/public_html/modules/gallery/";
require($GALLERY_BASEDIR . "init.php");

if ($profile) {
$timer = time();
}

/* Initializing the seed */
srand ((double) microtime() * 1000000);

define(CACHE_FILE, $gallery->app->albumDir . "/block-random.cache");
define(CACHE_EXPIRED, 86400);

// Check the cache file to see if it's up to date
$rebuild = 1;
if (fs_file_exists(CACHE_FILE)) {
$stat = fs_stat(CACHE_FILE);
$mtime = $stat[9];
if (time() - $mtime < CACHE_EXPIRED) {
$rebuild = 1;
}
}

if ($rebuild) {
scanAlbums();
saveCache();
} else {
readCache();
}

$album = chooseAlbum();

if ($album) {
$index = choosePhoto($album);
}

if (isset($index)) {
$id = $album->getPhotoId($index);
$url = "http://www.sportsrant.com/";
$url .= "modules.php?set_albumName=".$album->fields["name"];
$url .= "&id=" .$id;
$url .= "&op=modload&name=gallery&file=index&include=view_photo.php";
// echo"$url";

echo "<center>"
   ."<a href=\"$url\">"
//    ."<a href=" .makeAlbumUrl($album->fields["name"], $id) .">"
   .$album->getThumbnailTag($index)
   ."</a></center>";

$caption = $album->getCaption($index);
if ($caption) {
echo "<br><center>$caption</center>";
}

$albumURL = "http://www.sportsrant.com/";
$albumURL .= "modules.php?set_albumName=".$album->fields["name"];
$albumURL .= "&op=modload&name=gallery&file=index&include=view_album.php";
echo "<br><center>From: "
."<a href=\"$albumURL\">"
//    ."<a href=" .makeAlbumUrl(currentAlbum) .">"
   .$album->fields["title"]
   ."</a></center>";
} else {
print "No photo chosen.";
}

if ($profile) {
$elapsed = time() - $timer;
print "<br>Elapsed: $elapsed secs";
}

/*
* --------------------------------------------------
* Support functions
* --------------------------------------------------
*/

function saveCache() {
global $cache;
if ($fd = fs_fopen(CACHE_FILE, "w")) {
foreach ($cache as $key => $val) {
   fwrite($fd, "$key/$val\n");
}
fclose($fd);
}
}

function readCache() {
global $cache;
if ($fd = fs_fopen(CACHE_FILE, "r")) {
while ($line = fgets($fd, 4096)) {
   list($key, $val) = explode("/", $line);
   $cache[$key] = $val;
}
fclose($fd);
}
}

function choosePhoto($album) {
global $cache;

$count = $cache[$album->fields["name"]];
if ($count == 0) {
// Shouldn't happen
return null;
} else if ($count == 1) {
$choose = 1;
} else {
$choose = rand(1, $count);
$wrap = 0;
if ($album->isHidden($choose)) {
   $choose++;
   if ($choose > $album->numPhotos(1)) {
   $choose = 1;
   $wrap++;

   if ($wrap = 2) {
      return null;
   }
   }
}
}

return $choose;
}

function chooseAlbum() {
global $cache;

/*
* The odds that an album will be selected is proportional
* to the number of (visible) items in the album.
*/

$total = 0;
foreach ($cache as $name => $count) {
if (!$choose) {
   $choose = $name;
}

$total += $count;
if ($total != 0 && ($total == 1 || rand(1, $total) <= $count)) {
   $choose = $name;
}
}

if ($choose) {
$album = new Album();
$album->load($choose);
return $album;
} else {
return null;
}
}

function scanAlbums() {
global $cache;
global $gallery;

$cache = array();
$everybody = $gallery->userDB->getEverybody();
$albumDB = new AlbumDB();
foreach ($albumDB->albumList as $tmpAlbum) {
if ($everybody->canReadAlbum($tmpAlbum)) {
   $seeHidden = $everybody->canWriteToAlbum($tmpAlbum);
   $numPhotos = $tmpAlbum->numPhotos($seeHidden);
   $name = $tmpAlbum->fields["name"];
   if ($numPhotos > 0) {
   $cache[$name] = $numPhotos;
   }
}
}
}
?>

can someone help me out to see if it is possible to just make this -1/or the current gallery instead of all galleries

Thanks
Mike

msimonds · Regular Joined: Jul 15, 2003 Posts: 56 Location: Dallas

oh BTW I fixed this block so that it can just pull from whatever gallery you want it to