function pageNameToFileNameImpl($basePath, $pageName)
{
global $WikiGallery_PathDelimiter;
// empty pageName?
if ($pageName == "") {
return "";
}
//echo "Will try to find filename for $pageName<br/>";
$lastComponent = WikiGalleryLastComponent($pageName, $WikiGallery_PathDelimiter);
$head = WikiGalleryLeadingComponents($pageName, $WikiGallery_PathDelimiter);
if (!$head) {
$path = "";
$pathslash = "";
} else {
$path = $this->pageNameToFileNameImpl($basePath, $head);
if ($path == -1) {
return -1;
}
$pathslash = "{$path}/";
}
if (!is_dir($basePath . "/" . $path)) {
return -1;
}
$pwd = opendir($basePath . "/" . $path);
$found = "";
while (($file = readdir($pwd)) != false) {
$filePageName = fileNameToPageName($file);
if (ucfirst($lastComponent) == $filePageName) {
//echo "Found $file==$lastComponent<br/>";
$found = $file;
break;
} else {
//echo "$file => $filePageName!=$lastComponent<br/>";
}
}
closedir($pwd);
if ($found == "") {
return -1;
} else {
return $pathslash . $found;
}
}
function neighbourPicture($name, $delta, $count = -1)
{
// is it a file?
$pagefile = $this->provider->pageNameToFileName($name);
if ($pagefile == -1 || $this->provider->isAlbum("/" . $pagefile)) {
return false;
}
// split pathes into filename and path
$filename = WikiGalleryLastComponent($pagefile);
$path = WikiGalleryLeadingComponents($pagefile);
if (!$path) {
$slashpath = "";
$pathslash = "";
} else {
$slashpath = "/" . $path;
$pathslash = $path . "/";
}
// find position in the album of the current picture
$pictures = $this->provider->getFilenames($slashpath);
$indexed = array();
$i = 0;
$thisIndex = -1;
foreach ($pictures as $k) {
$indexed[$i] = $k;
if ($k == $filename) {
$thisIndex = $i;
}
$i++;
}
$picturesNum = $i;
// found?
if ($thisIndex == -1) {
return false;
}
// get $count many neighbours from $thisIndex-$delta
if ($count == -1) {
$i = $thisIndex + $delta;
if ($i >= 0 && $i < $picturesNum) {
return $pathslash . $indexed[$i];
} else {
return "";
}
} else {
$i = max($thisIndex + $delta, 0);
$ret = array();
while ($i < $picturesNum && $i < $thisIndex + $delta + $count) {
$ret[] = $pathslash . $indexed[$i];
$i++;
}
return $ret;
}
}