} elseif ($_GET['highwire_selection'] == 'ti') {
$query_string = urlencode("title =\"{$_GET['highwire_query']}\"");
} elseif ($_GET['highwire_selection'] == 'abs') {
$query_string = urlencode("dc.description =\"{$_GET['highwire_query']}\"");
}
}
########## search highwire ##############
if (!empty($query_string) && empty($_GET['load']) && empty($_GET['save']) && empty($_GET['delete'])) {
############# caching ################
$cache_name = cache_name();
$cache_name .= '_download';
$db_change = database_change(array('library'));
cache_start($db_change);
########## search highwire ##############
$request_url = "http://highwire.stanford.edu/cgi/sru?version=1.1&operation=searchRetrieve&query={$query_string}&startRecord=" . ($from - 1) . "&sendit=Search";
$xml = proxy_dom_load_file($request_url, $proxy_name, $proxy_port, $proxy_username, $proxy_password);
if ($xml === false) {
die('Error! I, Librarian could not connect with an external web service. This usually indicates that you access the Web through a proxy server.
Enter your proxy details in Tools->Settings. Alternatively, the external service may be temporarily down. Try again later.');
}
}
########## display search result summaries ##############
if (isset($xml)) {
print '<div style="padding:2px;font-weight:bold">Highwire search';
if (!empty($_SESSION['session_download_highwire_searchname'])) {
print ': ' . htmlspecialchars($_SESSION['session_download_highwire_searchname']);
}
print '</div>';
libxml_use_internal_errors(true);
$doc = new DOMDocument();
$doc->loadXML($xml);
function fetch_from_ol($ol_id, $isbn)
{
global $proxy_name, $proxy_port, $proxy_username, $proxy_password, $response;
if (!empty($ol_id)) {
$query = 'q=' . urlencode($ol_id);
} elseif (!empty($isbn)) {
$query = 'isbn=' . urlencode($isbn);
}
$request_url = "http://openlibrary.org/search.json?" . $query;
$ol = proxy_dom_load_file($request_url, $proxy_name, $proxy_port, $proxy_username, $proxy_password);
if (empty($ol)) {
die('Error! I, Librarian could not connect with an external web service. This usually indicates that you access the Web through a proxy server.
Enter your proxy details in Tools->Settings. Alternatively, the external service may be temporarily down. Try again later.');
}
$ol = json_decode($ol, true);
if ($ol['num_found'] !== 1) {
die('Error! Unique record not found in Open Library.');
}
$record = $ol['docs'][0];
$response['title'] = $record['title'];
if (isset($record['subtitle'])) {
$response['title'] .= ': ' . $record['subtitle'];
}
$response['year'] = $record['first_publish_year'] . '-01-01';
//GET AUTHORS
$name_array = array();
if (count($record['author_name']) > 0) {
foreach ($record['author_name'] as $author) {
$author_array = explode(' ', $author);
$last = array_pop($author_array);
$first = join(' ', $author_array);
$name_array[] = 'L:"' . $last . '",F:"' . $first . '"';
$response['last_name'][] = $last;
$response['first_name'][] = $first;
}
}
if (isset($name_array)) {
$response['authors'] = join(";", $name_array);
}
$response['keywords'] = '';
if (count($record['subject']) > 0) {
$response['keywords'] = join(' / ', $record['subject']);
}
$response['reference_type'] = 'book';
if (empty($ol_id)) {
$ol_id = $record['edition_key'][0];
$response['uid'][] = 'OL:' . $ol_id;
}
if (empty($isbn)) {
$isbn = $record['isbn'][0];
$response['uid'][] = 'ISBN:' . $isbn;
}
$response['url'][] = 'http://openlibrary.org/book/' . $ol_id;
}
