/** @access private */
function _generate_temp_name($filename, $suffix = '')
{
$id = sha1(uniqid(mt_rand(), true));
list(, $extension) = get_filename_parts($filename);
if (!empty($extension)) {
$extension = strtolower(".{$extension}");
}
return WEB_TEMP . "{$id}{$suffix}{$extension}";
}
/**
* Gets a unique version of the given asset filename.
*
* Returns a version of the given filename that has been modified (if
* necessary) so that it does not conflict with the filename of an existing
* asset.
*
* @author Eric Naeseth <*****@*****.**>
* @since Reason 4.0 beta 8
* @param string $filename the filename to make unique
* @param int $site_id the ID of the Reason minisite in which the filename must
* be unique
* @param int $skip the ID of an asset to ignore in checking for a unique
* filename. If the caller is trying to overwrite an existing asset
* file, the ID of that asset should be passed as $skip.
* @return unique $filename
*/
function reason_get_unique_asset_filename($filename, $site_id, $skip = null)
{
$selector = new entity_selector($site_id);
$selector->add_type(id_of("asset"));
$assets = $selector->run_one("", "All");
$existing_filenames = array();
foreach ((array) $assets as $asset) {
if (!$skip || $asset->id() != $skip) {
$existing_filenames[] = $asset->get_value("file_name");
}
}
list($base, $extension) = get_filename_parts($filename);
if (!empty($extension)) {
$extension = ".{$extension}";
}
$index = 1;
while (in_array($filename, $existing_filenames)) {
$index++;
$filename = "{$base}_{$index}{$extension}";
}
return $filename;
}
