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<?php
function biblio_crossref_form_biblio_node_form_alter(&$form, &$form_state) {
global $user;
if (phpversion() > 5 && (!$form_state['submitted'] || isset($form_state['values']['doi_search_results'])) && !isset($form['#node']->nid)) {
$form['biblio_doi_lookup'] = array(
'#type' => 'fieldset',
'#title' => t('DOI Lookup'),
'#weight' => -20,
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$have_pid = variable_get('biblio_crossref_pid', '');
$user_pid = isset($user->biblio_crossref_pid) && !empty($user->biblio_crossref_pid) ? $user->biblio_crossref_pid : '';
if (variable_get('biblio_show_crossref_profile_form', '1') && !empty($user_pid)) {
$have_pid = $user_pid;
}
if (empty($have_pid)) {
$form['biblio_doi_lookup']['doi_register'] = array(
'#prefix' => '<p><b>',
'#suffix' => '</b></p>',
'#value' => l('You need to register with CrossRef', 'http://www.crossref.org/requestaccount/', array(
'attributes' => array(
'target' => '_blank',
),
'absolue' => TRUE,
)) . t(' and then enter your CrossRef UserID in the "<i>CrossRef Login Information</i>" section of your account profile ') . l('here...', "user/{$user->uid}/edit"),
);
}
if (isset($form_state['values']['doi_search_results']) && is_array($form_state['values']['doi_search_results'])) {
$form['biblio_doi_lookup']['#collapsed'] = FALSE;
if (empty($form_state['values']['doi_search_results'])) {
}
else {
foreach ($form_state['values']['doi_search_results'] as $result) {
$info = l($result['doi'], 'http://dx.doi.org/' . $result['doi'], array(
'external' => TRUE,
'attributes' => array(
'onclick' => "\$('#edit-doi-data').val(\$(this).text()); \$('#edit-doi-submit').click(); return false",
'title' => t('Click this link to create a node using this DOI'),
),
));
$info .= ': ' . $result['full'];
$form['biblio_doi_lookup'][] = array(
'#value' => "<div>" . $info . '</div>',
'#weight' => -11,
);
}
}
}
$form['biblio_doi_lookup']['doi_data'] = array(
'#type' => 'textfield',
'#title' => t('DOI'),
'#required' => FALSE,
'#default_value' => $form_state['values']['doi_data'],
'#description' => t('Enter a DOI name in the form: <b>10.1000/123456</b>'),
'#disabled' => empty($have_pid),
'#size' => 60,
'#maxlength' => 255,
'#weight' => -10,
);
$form['biblio_doi_lookup']['doi_submit'] = array(
'#type' => 'submit',
'#disabled' => empty($have_pid),
'#value' => t('Populate using DOI'),
'#weight' => -9,
);
$form['biblio_doi_lookup']['doi_search_author'] = array(
'#type' => 'textfield',
'#title' => t('Author'),
'#required' => FALSE,
'#default_value' => $form_state['values']['doi_search_author'],
'#description' => t('Enter the LAST name of the FIRST author.'),
'#disabled' => empty($have_pid),
'#size' => 60,
'#maxlength' => 255,
'#weight' => -7,
);
$form['biblio_doi_lookup']['doi_search_title'] = array(
'#type' => 'textfield',
'#title' => t('Title'),
'#required' => FALSE,
'#default_value' => $form_state['values']['doi_search_title'],
'#description' => t('Enter the exact title.'),
'#disabled' => empty($have_pid),
'#size' => 60,
'#maxlength' => 255,
'#weight' => -6,
);
$form['biblio_doi_lookup']['doi_search_submit'] = array(
'#type' => 'submit',
'#disabled' => empty($have_pid),
'#value' => t('Search for DOI by Author and Title'),
'#weight' => -5,
);
$form_state['values']['doi_search_results'] = NULL;
$form['#validate'] = array_merge(array(
'biblio_crossref_form_biblio_node_form_validate',
), $form['#validate']);
}
$biblio_crossref_id = isset($form_state['values']['biblio_crossref_id']) ? $form_state['values']['biblio_crossref_id'] : '';
$biblio_crossref_md5 = isset($form_state['values']['biblio_crossref_md5']) ? $form_state['values']['biblio_crossref_md5'] : '';
$form['biblio_crossref_id'] = array(
'#type' => 'value',
'#value' => $biblio_crossref_id,
);
$form['biblio_crossref_md5'] = array(
'#type' => 'value',
'#value' => $biblio_crossref_md5,
);
}
function biblio_crossref_form_biblio_node_form_validate($form, &$form_state) {
global $user;
$node_data = array();
$clicked_button = $form_state['clicked_button']['#value'];
if ($clicked_button == t('Populate using DOI') || $clicked_button == t('Search for DOI by Author and Title')) {
$crossref_pid = variable_get('biblio_crossref_pid', '');
$user_pid = isset($user->biblio_crossref_pid) && !empty($user->biblio_crossref_pid) ? $user->biblio_crossref_pid : '';
if (variable_get('biblio_show_crossref_profile_form', '1') && !empty($user_pid)) {
$crossref_pid = $user_pid;
}
if (empty($crossref_pid)) {
form_set_error('doi_data', t(l('You need to register with CrossRef', 'http://www.crossref.org/requestaccount/', array(
'attributes' => array(
'target' => '_blank',
),
'absolue' => TRUE,
)) . t(' and then enter your CrossRef UserID in the "<i>CrossRef Login Information</i>" section of your account profile ') . l('here...', "user/{$user->uid}/edit")));
return;
}
if ($clicked_button == t('Populate using DOI') && strlen($doi = $form_state['values']['doi_data'])) {
if (($doi_start = strpos($form_state['values']['doi_data'], '10.')) !== FALSE) {
if (!($dup = biblio_crossref_check_doi($doi))) {
module_load_include('php', 'biblio_crossref', 'biblio.crossref.client');
$client = new BiblioCrossRefClient($doi, $crossref_pid);
$node_data = $client
->fetch();
if (!empty($node_data)) {
$form_state['values'] = array_merge($form_state['values'], $node_data);
$form_state['storage']['biblio_type'] = $node_data['biblio_type'];
return;
}
}
else {
$message = t('The DOI that you are trying to import already exists in the database, see ');
$message .= l('node/' . $dup, 'node/' . $dup);
form_set_error('doi_data', $message);
$form_state['rebuild'] = TRUE;
$form_state['submitted'] = FALSE;
unset($form_state['values']['biblio_type']);
return;
}
}
else {
form_set_error('doi_data', t('This does not appear to be a valid DOI name, it should start with "10." '));
$form_state['rebuild'] = TRUE;
$form_state['submitted'] = FALSE;
unset($form_state['values']['biblio_type']);
return;
}
}
if ($clicked_button == t('Search for DOI by Author and Title') && empty($form_state['values']['doi_search_author'])) {
form_set_error('doi_search_author', t('You must supply an author name'));
}
if ($clicked_button == t('Search for DOI by Author and Title') && empty($form_state['values']['doi_search_title'])) {
form_set_error('doi_search_title', t('You must supply a title'));
}
if ($clicked_button == t('Search for DOI by Author and Title') && !empty($form_state['values']['doi_search_author']) && !empty($form_state['values']['doi_search_title'])) {
module_load_include('php', 'biblio_crossref', 'biblio.crossref.client');
$client = new BiblioCrossRefClient('', $crossref_pid);
$client
->setUrl('http://doi.crossref.org/servlet/query');
$results = $client
->fetchByAuthorTitle($form_state['values']['doi_search_author'], $form_state['values']['doi_search_title']);
$form_state['values']['doi_search_results'] = $results;
$form_state['rebuild'] = TRUE;
$form_state['submitted'] = FALSE;
$form_state['values']['biblio_type'] = NULL;
}
}
}
function biblio_crossref_check_doi($doi) {
return db_result(db_query("SELECT nid FROM {biblio_crossref} WHERE biblio_crossref_id = '%s'", $doi));
}
function biblio_crossref_biblio_lookup_link_settings() {
return array(
'crossref' => t('DOI'),
);
}
function biblio_crossref_biblio_mapper_options() {
return array(
'crossref' => array(
'title' => t('CrossRef XML'),
'export' => FALSE,
),
);
}
function biblio_crossref_biblio_lookup_link($node) {
return biblio_crossref_link('node', $node);
}
function biblio_crossref_link($type, $node = NULL, $teaser = FALSE) {
$show_link = variable_get('biblio_lookup_links', array(
'crossref' => TRUE,
));
if (!$show_link['crossref']) {
return array();
}
if (isset($node) && $type == 'node' && $node->type == 'biblio' && !empty($node->biblio_crossref_id)) {
$link = 'http://dx.doi.org/' . $node->biblio_crossref_id;
return array(
'biblio_crossref' => array(
'title' => t('DOI'),
'href' => $link,
'attributes' => array(
'title' => t("Click to view the CrossRef listing for this node"),
),
),
);
}
return;
}
function biblio_crossref_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
if ($node->type != 'biblio') {
return;
}
$callback = '_biblio_crossref_' . str_replace(' ', '_', $op);
if (function_exists($callback)) {
return $callback($node, $a3, $a4);
}
return;
}
function _biblio_crossref_delete($node) {
db_query('DELETE FROM {biblio_crossref} WHERE nid = %d', $node->nid);
}
function _biblio_crossref_view($node) {
}
function _biblio_crossref_insert($node, $update = FALSE) {
if (empty($node->biblio_crossref_id)) {
return;
}
drupal_write_record('biblio_crossref', $node);
}
function _biblio_crossref_load($node) {
static $result = array();
if (empty($result[$node->nid])) {
return $result[$node->nid] = db_fetch_array(db_query('SELECT biblio_crossref_id FROM {biblio_crossref} WHERE nid = %d', $node->nid));
}
return $result[$node->nid];
}
function biblio_crossref_crossref_map_reset($type = NULL) {
module_load_include('install', 'biblio_crossref', 'biblio_crossref');
_reset_crossref_map($type);
}
function biblio_crossref_get_biblio_field_info() {
return array(
'biblio_crossref' => array(
'name' => 'biblio_crossref_id',
'type' => 'textfield',
'title' => 'DOI',
),
);
}
