<?php
// $Id$
//////////////////////////////////////////////////////////////////////////////
// Menu callbacks
function exhibit_output_convert($url, $callback, $input_format = NULL, $output_format = 'application/json') {
if (!preg_match('!^exhibit/[\w]+/(.*)$!', $_GET['q'], $matches)) {
return drupal_not_found();
}
$url = 'http://' . $matches[1];
if (!valid_url($url, TRUE)) {
return drupal_access_denied();
}
$response = drupal_http_request($url);
if (!empty($response->error)) {
// TODO
return drupal_access_denied();
}
$output = $callback($response->data);
exhibit_output($output_format, drupal_to_js($output));
}
function exhibit_output_node($node) {
$function = 'exhibit_output_node_' . $node->type;
exhibit_output('application/json', drupal_to_js(is_callable($function) ? call_user_func($function, $node) : array('items' => array())));
}
function exhibit_output_feed($feed) {
exhibit_output($feed['type'], exhibit_get_feed_contents($feed['url']));
}
function exhibit_output($type, $body) {
//$type = 'text/plain'; // DEBUG
drupal_set_header('Content-Type: ' . $type . '; charset=utf-8');
drupal_set_header('Content-Length: ' . strlen($body));
if (EXHIBIT_FEED_ETAG) {
$md5 = base64_encode(md5($body, TRUE));
drupal_set_header('Content-MD5: ' . $md5);
drupal_set_header('ETag: "' . $md5 . '"'); // strong entity tag
}
if (EXHIBIT_FEED_LIFETIME > 0) {
drupal_set_header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
drupal_set_header('Expires: ' . gmdate('D, d M Y H:i:s', time() + EXHIBIT_FEED_LIFETIME) . ' GMT');
drupal_set_header('Cache-Control: max-age=' . EXHIBIT_FEED_LIFETIME . ', private, must-revalidate');
drupal_set_header('Pragma: cache'); // need to override no-cache set by Drupal.
}
print $body;
}
/**
* @see http://simile.mit.edu/wiki/Exhibit/Template/_history_.html
*/
function exhibit_output_history() {
print '<html><body></body></html>';
}
//////////////////////////////////////////////////////////////////////////////
function exhibit_parse_tsv($input) {
$output = array();
$lines = explode("\n", $input);
$fields = explode("\t", array_shift($lines));
foreach ($lines as $line) {
$item = array();
foreach (explode("\t", $line) as $index => $value) {
$item[$fields[$index]] = $value;
}
$output[] = $item;
}
return exhibit_json($output);
}
) is private.
