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<?php
function freelinking_menu() {
$items['freelinking'] = array(
'title' => 'Freelinks',
'description' => 'A list of freelinks used on this site',
'page callback' => 'freelinking_page',
'access arguments' => array(
'access freelinking list',
),
);
$items['admin/settings/freelinking'] = array(
'title' => 'Freelinking settings',
'description' => 'Configure wiki-style freelinking settings for node content',
'page callback' => 'drupal_get_form',
'page arguments' => array(
'freelinking_settings',
),
'access arguments' => array(
'administer freelinking',
),
);
return $items;
}
function freelinking_perm() {
return array(
'administer freelinking',
'access freelinking list',
);
}
function freelinking_theme($existing, $type, $theme, $path) {
return array(
'freelinking_page_form' => array(
'arguments' => array(
'form' => NULL,
),
),
);
}
function freelinking_page($thetitle = NULL) {
if ($_POST['operation'] == 'delete' && $_POST['links']) {
return drupal_get_form('freelinking_multiple_delete_confirm', $_POST['links']);
}
elseif ($_POST['operation'] == 'delete-all') {
return drupal_get_form('freelinking_delete_all_confirm');
}
if ($thetitle) {
$freelink = _freelinking_make_link($thetitle);
drupal_goto($freelink['path'], isset($freelink['options']['query']) ? $freelink['options']['query'] : '');
}
else {
return drupal_get_form('freelinking_page_form', user_access('administer freelinking'));
}
}
function freelinking_page_form($admin = TRUE) {
if ($admin) {
$form['options'] = array(
'#type' => 'fieldset',
'#title' => t('Update options'),
'#prefix' => '<div class="container-inline">',
'#suffix' => '</div>',
);
$options = array(
'delete' => t('Delete'),
'delete-all' => t('Delete All'),
);
$form['options']['operation'] = array(
'#type' => 'select',
'#options' => $options,
'#default_value' => 'delete',
);
$form['options']['submit'] = array(
'#type' => 'submit',
'#value' => t('Update'),
);
$header = array(
array(
'data' => theme('table_select_header_cell'),
),
array(
'data' => t('Phrase'),
'field' => 'phrase',
'sort' => 'asc',
),
array(
'data' => t('Target'),
'field' => 'phrase',
),
);
}
else {
$header = array(
array(
'data' => t('Phrase'),
'field' => 'phrase',
'sort' => 'asc',
),
array(
'data' => t('Target'),
'field' => 'phrase',
),
);
}
$query = 'SELECT hash, phrase, path FROM {freelinking}' . tablesort_sql($header);
$result = pager_query($query, 50);
while ($freelink = db_fetch_object($result)) {
$hash = $freelink->hash;
$links[$hash] = '';
$form['phrase'][$hash] = array(
'#value' => urldecode($freelink->phrase),
);
$fltargetnid = _freelinking_exists($freelink->phrase);
$freelink = _freelinking_make_link($freelink->phrase);
if ($fltargetnid) {
$link = l(t('see this content'), drupal_get_path_alias('node/' . $fltargetnid));
}
else {
$link = '<a href="' . url($freelink['path'], array()) . '">' . t('create this content') . '</a>';
}
$form['target'][$hash] = array(
'#value' => $link,
);
}
if ($admin) {
$form['links'] = array(
'#type' => 'checkboxes',
'#options' => $links,
);
}
$form['pager'] = array(
'#value' => theme('pager', NULL, 50, 0),
);
return $form;
}
function theme_freelinking_page_form($form) {
if (isset($form['options']) && is_array($form['options'])) {
$output .= drupal_render($form['options']);
$header = array(
theme('table_select_header_cell'),
array(
'data' => t('Phrase'),
'field' => 'phrase',
'sort' => 'asc',
),
array(
'data' => t('Target'),
'field' => 'path',
),
);
}
if (isset($form['phrase']) && is_array($form['phrase'])) {
foreach (element_children($form['phrase']) as $key) {
$row = array();
if (isset($form['links'][$key])) {
$row[] = drupal_render($form['links'][$key]);
}
$row[] = drupal_render($form['phrase'][$key]);
$row[] = drupal_render($form['target'][$key]);
$rows[] = $row;
}
}
else {
$rows[] = array(
array(
'data' => t('No freelinks available.'),
'colspan' => user_access('administer freelinking') ? '3' : '2',
),
);
}
$output .= theme('table', $header, $rows);
if ($form['pager']['#value']) {
$output .= drupal_render($form['pager']);
}
$output .= drupal_render($form);
return $output;
}
function freelinking_block($op = 'list', $delta = 0) {
switch ($op) {
case 'list':
$blocks[0]['info'] = t('Freelink targets that need to be created');
$blocks[0]['cache'] = BLOCK_NO_CACHE;
return $blocks;
break;
case 'configure':
$form['freelinking_block_options'] = array(
'#type' => 'fieldset',
'#title' => t('Freelinking Block Options'),
);
for ($i = 5; $i <= 30; $i = $i + 5) {
$options[$i] = $i;
}
$form['freelinking_block_options']['freelinking_blocknum'] = array(
'#title' => t('Number of non-existing link phrases to show'),
'#type' => 'select',
'#options' => $options,
'#default_value' => variable_get('freelinking_blocknum', '10'),
'#description' => t('Number of phrases to show in the block.'),
);
return $form;
break;
case 'view':
switch ($delta) {
case 0:
$query = 'SELECT * FROM {freelinking} WHERE path LIKE "node/add%" ORDER BY RAND()';
$result = db_query($query);
$i = 0;
$content = '';
while ($freelink = db_fetch_object($result)) {
if ($i == variable_get('freelinking_blocknum', 10)) {
break;
}
$items[] = l(urldecode($freelink->phrase), $freelink->path, array(), $freelink->args);
$i++;
}
$block['subject'] = t('Create This Content');
$block['content'] = theme('item_list', $items);
return $block;
default:
break;
}
default:
break;
}
}
function freelinking_settings() {
$notfoundoptions = array(
'create only' => t('Only try to create content'),
'no access search' => t('Search for content if user can\'t create'),
'always search' => t('Always search for content'),
);
$form["freelinking_nodetype"] = array(
'#title' => t('Default for new content'),
'#type' => 'select',
'#options' => node_get_types('names'),
'#default_value' => variable_get("freelinking_nodetype", 'story'),
'#description' => t('Type of content that the freelinking filter will create when clicking on a freelink without a target.'),
);
$form['freelinking_notfound'] = array(
'#title' => t('What to do if content not found'),
'#type' => 'select',
'#options' => $notfoundoptions,
'#default_value' => variable_get('freelinking_notfound', 'no access search'),
'#description' => t('What to do when clicking on a freelink without a target. Choose to always attempt to create the content, search if the user doesn\'t have permission to create (the default), or to always search. NOTE: search functions require search.module to be activated.'),
);
$form["freelinking_restriction"] = array(
'#title' => t('Restrict free links to this content type'),
'#type' => 'select',
'#multiple' => 'true',
'#options' => array_merge(array(
'none' => t('No restrictions'),
), node_get_types('names')),
'#default_value' => variable_get("freelinking_restriction", array(
'none',
)),
'#description' => t('If desired, you can restrict the freelinking title search to just content of these types. Note that if this does not include as the "Default for new content," above, new freelinked content cannot be found.'),
);
$form["freelinking_camelcase"] = array(
'#title' => t('Allow CamelCase linking'),
'#type' => 'checkbox',
'#default_value' => variable_get("freelinking_camelcase", 0),
'#description' => t('If desired, you can enable CamelCase linking'),
);
$form["freelinking_onceonly"] = array(
'#title' => t('Only link first occurance'),
'#type' => 'checkbox',
'#default_value' => variable_get("freelinking_onceonly", 0) == 1 ? TRUE : FALSE,
'#description' => t('If desired you can only turn the first occurance of a freelink into a link. This can improve the appearance of content that includes a lot of the same CamelCase words.'),
);
return system_settings_form($form);
}
function freelinking_filter($op, $delta = 0, $format = -1, $text = '') {
switch ($op) {
case 'list':
return array(
0 => t('freelinking filter'),
);
break;
case 'name':
return t('freelinking filter');
break;
case 'description':
return t('Enables freelinking between nodes with CamelCase or delimiters like [[ and ]].');
break;
case 'process':
return _freelinking_do_filtering($text, FALSE);
break;
case 'prepare':
return $text;
break;
}
}
function freelinking_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
switch ($op) {
case 'update':
_freelinking_do_filtering($node->body, TRUE);
break;
case 'insert':
_freelinking_do_filtering($node->body, TRUE);
break;
}
}
function freelinking_filter_tips($delta, $format, $long = FALSE) {
if ($long) {
$output = 'Content in [[double square brackets]] will be linked to existing content with that title, or a page to create that content. ';
$output .= 'Links can contain an optional bar, "|". Content on the left of the bar is the target; to the right, the link shown. ';
$output .= 'Links to pages outside this site are allowed. They must start with one of the following: "http", "https", "ftp", or "mailto", and can exist either by themselves, or on the left of the bar. ';
$output .= 'Examples: ';
$ouptut .= '<ul>';
$output .= '<li>[[simple link]] - will go to the content titled "simple link" or a page to create that content.</li>';
$output .= '<li>[[this is the target|this is the source]] - will present "this is the source" as a link to "this is the target", or a page to create that content.</li>';
$output .= '<li>[[http://www.example.com|this is the source]] - will present "this is the source" as a link to http://www.example.com.</li>';
$output .= '<li>[[http://www.example.com]] - will present "http://www.example.com" as a link to http://www.example.com.</li>';
$output .= '</ul>';
if (variable_get('freelinking_camelcase', TRUE)) {
$output .= 'Content consisting of two or more capitalized words run together (aka "CamelCase") will be linked to existing content with that title, or a page to create that content.';
}
}
else {
$output = 'Link to content with [[some text]], where "some text" is the title of existing content or the title of a new piece of content to create. You can also link text to a different title by using [[link to this title|show this text]]. ';
$output .= 'Link to outside URLs with [[http://www.example.com|some text]], or even [[http://www.example.com]]. ';
if (variable_get('freelinking_camelcase', TRUE)) {
$output .= 'Link to existing or new content with CamelCaseWords.';
}
}
return t($output);
}
function freelinking_form_alter(&$form, $form_state, $form_id) {
if (isset($form['type'])) {
$type = $form['type']['#value'];
if (variable_get('freelinking_nodetype', 'story') == $type && $_GET['edit']) {
$form['title']['#default_value'] = urldecode($_GET['edit']['title']);
}
}
}
function freelinking_page_form_validate($form_id, &$form_state) {
$links = array_filter($form_values['links']);
if (count($links) == 0) {
form_set_error('form', t('No items selected'));
}
}
function freelinking_page_form_submit($form_id, &$form_state) {
$op = $form_state['values']['operation'];
$links = array_filter($form_state['values']['links']);
}
function freelinking_multiple_delete_confirm($links = array()) {
$form['links'] = array(
'#prefix' => '<ul>',
'#suffix' => '</ul>',
'#tree' => TRUE,
);
foreach ($links['post']['links'] as $hash => $value) {
$phrase = db_result(db_query('SELECT phrase FROM {freelinking} WHERE hash = "%s"', $hash));
$form['links'][$hash] = array(
'#type' => 'hidden',
'#value' => $hash,
'#prefix' => '<li>',
'#suffix' => check_plain($phrase),
);
}
$form['operation'] = array(
'#type' => 'hidden',
'#value' => 'delete',
);
return confirm_form($form, t('Are you sure you want to delete these items?'), 'freelinking', t('This action cannot be undone.'), t('Delete all'), t('Cancel'));
}
function freelinking_multiple_delete_confirm_submit($form_id, &$form_state) {
if ($form_state['values']['confirm']) {
foreach ($form_state['values']['links'] as $hash => $phrase) {
_freelinking_delete($hash);
}
}
drupal_set_message(t('The freelinks have been deleted.'));
return 'freelinking';
}
function freelinking_delete_all_confirm() {
$form['operation'] = array(
'#type' => 'hidden',
'#value' => 'delete-all',
);
return confirm_form($form, t('Are you sure you want to delete <strong>all</strong> freelinks?'), 'freelinking', t('This action cannot be undone.'), t('Delete all'), t('Cancel'));
}
function freelinking_delete_all_confirm_submit($form_id, &$form_state) {
if ($form_state['values']['confirm']) {
_freelinking_delete_all();
drupal_set_message(t('<strong>All</strong> freelinks have been deleted.'));
}
return 'freelinking';
}
function _freelinking_do_filtering($text, $store = FALSE) {
$allowcamelcase = variable_get("freelinking_camelcase", TRUE);
$freelinkingregexp = '/[^!](\\[\\[.+]])/Uu';
preg_match_all($freelinkingregexp, $text, $flmatches, PREG_PATTERN_ORDER);
if ($allowcamelcase) {
$camelcaseregexp = '/\\b([[:upper:]][[:lower:]]+){2,}\\b/';
preg_match_all($camelcaseregexp, $text, $ccmatches);
$wikiwords = array_merge($ccmatches[0], $flmatches[1]);
}
else {
$wikiwords = $flmatches[1];
}
foreach (array_unique($wikiwords) as $wikiword) {
if (substr($wikiword, 0, 2) == '[[') {
$phrase = substr($wikiword, 2, -2);
$freelink = $phrase;
$barpos = strpos($phrase, '|');
$pattern = '/\\[\\[' . preg_quote($phrase, '/') . ']]/';
if ($barpos) {
$freelink = substr($freelink, 0, $barpos);
$phrase = substr($phrase, $barpos + 1);
}
if (preg_match('/^(http(s)?|mailto|ftp):/', $freelink)) {
$replacement = '<a class="freelinking external" href="' . $freelink . '">' . $phrase . '</a>';
$store = FALSE;
}
else {
$flnkexists = _freelinking_exists($freelink);
if ($flnkexists) {
$tooltip = html_entity_decode($freelink);
$lnkoptions = array(
'attributes' => array(
'title' => $tooltip,
),
);
$replacement = l(html_entity_decode($phrase), drupal_get_path_alias('node/' . $flnkexists), $lnkoptions);
}
else {
$lnkoptions = array(
'attributes' => array(
'class' => 'freelinking noexist',
'rel' => 'nofollow',
),
);
$replacement = l(html_entity_decode($phrase), 'freelinking/' . rawurlencode($freelink), $lnkoptions);
}
}
}
else {
if ($allowcamelcase) {
$pattern = '/(?<!\\/)\\b' . $wikiword . '\\b(?![^<]*>)/';
$phrase = $wikiword;
$freelink = $wikiword;
$replacement = l($wikiword, 'freelinking/' . urlencode($wikiword), array(
'attributes' => array(
'class' => 'freelinking',
),
));
}
}
$text = preg_replace($pattern, $replacement, $text, variable_get("freelinking_onceonly", 0) ? 1 : -1);
if ($store) {
_freelinking_store($freelink, $replacement);
}
}
return $text;
}
function _freelinking_store($phrase, $path, $args = NULL) {
$hash = md5($phrase . $path . $args);
$query = "SELECT hash FROM {freelinking} WHERE phrase = '%s'";
$result = db_query($query, $phrase);
$num_rows = FALSE;
while ($dbobj = db_fetch_object($result)) {
$num_rows = TRUE;
$dbhash = $dbobj;
}
if (!$num_rows) {
$query = "INSERT INTO {freelinking} (hash, phrase, path, args) VALUES ('%s', '%s', '%s', '%s')";
$result = db_query($query, $hash, $phrase, $path, $args);
}
else {
if ($dbhash->hash != $hash) {
$query = "UPDATE {freelinking} SET hash = '%s', path = '%s', args = '%s' WHERE phrase = '%s'";
$result = db_query($query, $hash, $path, $args, $phrase);
}
}
}
function _freelinking_delete($hash) {
$query = "DELETE FROM {freelinking} WHERE hash = '%s'";
$result = db_query($query, $hash);
}
function _freelinking_delete_all() {
db_query('DELETE FROM {freelinking}');
}
function _freelinking_exists($thetitle) {
global $language;
$title = urldecode($thetitle);
$query = "SELECT nid FROM {node} WHERE title = '%s'";
if (module_exists('locale')) {
$query .= " AND (language = '{$language->language}' OR language = '')";
}
$noderestrict = variable_get('freelinking_restriction', array(
'none',
));
if (is_array($noderestrict) && !in_array('none', $noderestrict)) {
foreach ($noderestrict as $restrictedtype) {
$clauseparts[] = 'type = "' . $restrictedtype . '"';
}
$restrictions = implode(' OR ', $clauseparts);
$query .= " AND (" . $restrictions . ')';
}
$result = db_query($query, $title);
while ($node = db_fetch_object($result)) {
$nid = $node->nid;
}
return empty($nid) ? 0 : $nid;
}
function _freelinking_make_link($thetitle) {
global $user;
$freelink = array(
'options' => array(),
);
$nid = _freelinking_exists($thetitle);
if ($nid) {
$freelink['path'] = 'node/' . $nid;
}
else {
switch (variable_get('freelinking_notfound', 'no access search')) {
case 'create only':
$freelink['path'] = 'node/add/' . variable_get('freelinking_nodetype', 'story');
$freelink['options'] = array(
'query' => 'edit[title]=' . $thetitle,
);
break;
case 'no access search':
if (node_access('create', variable_get('freelinking_nodetype', 'story'))) {
$freelink['path'] = 'node/add/' . variable_get('freelinking_nodetype', 'story');
$freelink['options'] = array(
'query' => 'edit[title]=' . $thetitle,
);
}
else {
$freelink['path'] = 'search/node/' . $thetitle;
}
break;
case 'always search':
$freelink['path'] = 'search/node/' . $thetitle;
break;
}
}
_freelinking_store($thetitle, $freelink['path'], isset($freelink['args']) ? $freelink['args'] : '');
return $freelink;
}
