function find_article_from_metadata($values, &$item)
{
global $debug;
global $error;
$found = false;
if ($debug) {
echo '<div style="border: 1px solid #c7cfd5;background: rgb(255,255,153);padding:15px;">';
echo "<p><b>Find article from metadata</b></p>";
echo '<pre>';
print_r($values);
echo '</pre>';
echo '</div>';
}
// We need ISSN for cache lookup
check_for_missing_issn($values);
// echo __LINE__ , ' boo';
// Case 1: User is enough to locate article (i.e., has starting page
if (array_key_exists('spage', $values)) {
// echo __LINE__ , ' boo';
// Simple lookup
if ($values['spage'] != '') {
$found = find_article_have_spage($values, $item);
if (!$found) {
$error = ERROR_NOT_FOUND_FROM_METADATA;
}
}
}
// echo __LINE__ , ' boo';
// Case 2: User has a page in the range spage-epage (e.g., a nomenclator)
if (array_key_exists('pages', $values)) {
// Harder case, we have a page in the range
if ($values['pages'] != '') {
$found = find_article_from_page($values, $item);
if (!found) {
$error = ERROR_NOT_FOUND_FROM_METADATA;
}
}
}
return $found;
}
function enough_for_jstor_lookup(&$metadata)
{
$issn = '';
$year = '';
check_for_missing_issn($metadata);
if (array_key_exists('issn', $metadata)) {
$issn = $metadata['issn'];
}
if (array_key_exists('date', $metadata)) {
$date = $metadata['date'];
}
//print_r($metadata);
return $issn != '' and $date != '';
}