/**
* Init a arquive cache with $arquiveName name and $arquiveSize size
*
* @param string $arquiveName name for arquive cache (DEFAULT IS emplexer_default_archive)
* @param integer $arquiveSize size for arquive cache (DEFAULT IS 51200 Bytes)
* @throws Exception if $arquiveSize is less or eguals zero
*/
private function __construct($arquiveName = 'emplexer_default_archive', $arquiveSize = 51200)
{
// hd_print(__METHOD__);
$this->arquiveName = $arquiveName;
if (!is_numeric($arquiveSize) || $arquiveSize <= 0) {
throw new Exception("A bigger size is necessary to create an archive", 1);
}
$this->arquiveSize = $arquiveSize;
ArchiveCache::set_archive($this);
}
public static function get_archive($id, $url_prefix)
{
$archive = ArchiveCache::get_archive_by_id($id);
if (!is_null($archive)) {
return $archive;
}
$version_url = $url_prefix . '/versions.txt';
try {
$doc = HD::http_get_document($version_url);
} catch (Exception $e) {
$doc = null;
}
$version_by_name = array();
$total_size = 0;
if (is_null($doc)) {
hd_print("Failed to fetch archive versions.txt from {$version_url}.");
} else {
$tok = strtok($doc, "\n");
while ($tok !== false) {
$pos = strrpos($tok, ' ');
if ($pos === false) {
hd_print("Invalid line in versions.txt for archive '{$id}'.");
continue;
}
$name = trim(substr($tok, 0, $pos));
$version = trim(substr($tok, $pos + 1));
$version_by_name[$name] = $version;
$tok = strtok("\n");
}
hd_print("Archive {$id}: " . count($version_by_name) . " files.");
$size_url = $url_prefix . '/size.txt';
$doc = HD::http_get_document($size_url);
if (is_null($doc)) {
hd_print("Failed to fetch archive size.txt from {$size_url}.");
$version_by_name = array();
} else {
$total_size = intval($doc);
hd_print("Archive {$id}: size = {$total_size}");
}
}
$archive = new DefaultArchive($id, $url_prefix, $version_by_name, $total_size);
ArchiveCache::set_archive($archive);
return $archive;
}
