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<?php
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// $Id: weblink.module,v 1.83 2005/09/01 13:44:53 ber Exp $
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/**
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* General Hooks
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*/
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function weblink_help($section = "admin/help#weblink") {
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switch ($section) {
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case "admin/help#weblink":
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return t("<p>The weblinks module is used to create links to other resources - websites, pages, documents, etc. Each click on an outgoing link is logged and counted.</p>");
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case "admin/modules#description":
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return t("Allows articles with an associated weblink");
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case 'node/add#weblink':
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return t("Weblinks allow you to link to other websites and pages.");
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break;
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}
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}
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/**
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* Implementation of hook_menu().
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*/
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function weblink_menu() {
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global $user;
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//if ($may_cache) {
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$items[] = array(
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'path' => 'node/add/weblink',
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'title' => t('weblink'),
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'access' => user_access('create weblinks'));
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$items[] = array(
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'path' => 'weblink/goto',
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'callback' => 'weblink_goto',
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'type' => MENU_CALLBACK,
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'callback arguments' => arg(2),
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'access' => user_access('access content'));
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//}
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return $items;
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}
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function weblink_link($type, $node = 0, $main = 0) {
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$links = array();
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// Node links for a weblink
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if ($type == 'node' && $node->type == 'weblink' && $node->url) {
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$links[] = theme('weblink_link', $node);
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}
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return $links;
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}
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function weblink_perm() {
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return array('create weblinks', 'edit own weblinks');
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}
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/**
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* Filter handling code
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*/
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function weblink_filter($op, $delta = 0, $format = -1, $text = "") {
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switch ($op) {
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case 'list':
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return array(0 => t("Weblink filter"));
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case 'description':
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return t("Filter for weblink tokens, [weblink:node_id|text] or [weblink:http://weblink.example.com/]");
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case 'process':
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return _weblink_filter_process($text);
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default:
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return $text;
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}
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}
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function _weblink_filter_process($text) {
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$match = array();
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if (preg_match_all("/\[weblink:(\d+)(\|([^\|\]]*))?\]/i", $text, $match)) { // look for a node ID
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for ($i = 0; $i <= count($match[1]); $i++) {
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$node = node_load(array("nid" => $match[1][$i]));
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$match[2][$i] = preg_replace('/(^\|)/e', '', $match[2][$i]); // remove leading bar
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if (!$node->nid) {
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$text = str_replace($match[0][$i], $match[2][$i] . ' (' .sprintf(t('unknown link #%d'), $match[1][$i]) . ')', $text);
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}
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else {
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if (!$match[2][$i]) {
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$match[2][$i] = $node->title;
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}
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if ($node->url) {
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$text = str_replace($match[0][$i], l($match[2][$i], "weblink/goto/$node->lid", array('class' => 'outgoing', 'title' => t('visit %link', array('%link' => $node->url)))), $text);
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}
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}
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}
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}
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$match = array();
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if (preg_match_all("/\[weblink:(\S+?)\]/i", $text, $match)) {
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for ($i = 0; $i <= count($match[1]); $i++) {
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$result = db_query(db_rewrite_sql("SELECT n.nid FROM {node} n INNER JOIN {weblinks_node} wn ON n.nid = wn.nid INNER JOIN {weblinks} w ON wn.lid = w.lid WHERE url_md5 = '%s'"), md5($match[1][$i]));
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$weblink = db_fetch_object($result);
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$node = node_load(array("nid" => $weblink->nid));
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$text = str_replace($match[0][$i], l($node->title, "weblink/goto/$node->lid", array('class' => 'outgoing','title' => t('visit %link', array('%link' => $node->url)))), $text);
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}
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}
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return $text;
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}
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function weblink_filter_tips($delta, $format, $long = false) {
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if ($long) {
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return t("You may create links to items stored in our weblink registry using a special syntax. The weblink codes will be replaced by a links to visit the real websites. Syntax: <code>[weblink:link_id]</code> or <code>[weblink:http://a.weblink.example.com/]</code>.");
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}
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else {
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return t("You may link to webpages <a href=\"%long-tip\">through the weblinks registry</a>", array("%long-tip" => url("filter/tips", NULL, 'weblink')));
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}
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}
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/**
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* Node Hooks
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*/
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function weblink_node_name($node) {
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return t("weblink");
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}
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function weblink_access($op, $node) {
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if ($op == 'update' || $op == 'delete') {
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if (user_access('edit own weblinks') && ($user->uid == $node->uid)) {
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return TRUE;
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}
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}
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if ($op == 'create') {
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return user_access("create weblinks");
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}
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}
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function weblink_form(&$node, &$param) {
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$output .= form_textfield(t("Link"), "url", $node->url, 60, 65535, t("Links should be submitted in a form similar to http://www.example.com") . ($error['url'] ? $error['url'] : ''), NULL, TRUE);
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if (function_exists('taxonomy_node_form')) {
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$output .= implode('', taxonomy_node_form('weblink', $node));
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}
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$output .= form_textarea(t("Body"), "body", $node->body, 60, 20, t("Textual description of the weblink") . ($error['body'] ? $error['body'] : ''));
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$output .= filter_form('format', $node->format);
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return $output;
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}
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function weblink_insert($node) {
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$lid = db_next_id('weblinks_lid');
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db_query("INSERT INTO {weblinks_node} (lid, nid) VALUES ('%d', '%d')", $lid, $node->nid);
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db_query("INSERT INTO {weblinks} (lid, url, url_md5) VALUES ('%d', '%s', '%s')", $lid, $node->url, md5($node->url));
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}
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function weblink_update($node) {
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$old_node = node_load(array(nid => $node->nid));
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db_query("UPDATE {weblinks} SET url = '%s', url_md5 = '%s' WHERE lid = '%d'", $node->url, md5($node->url), $old_node->lid);
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}
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function weblink_delete(&$node) {
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$result = db_query("SELECT lid FROM {weblinks_node} WHERE nid = %d", $node->nid);
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db_query("DELETE FROM {weblinks_node} WHERE nid = %d", $node->nid);
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while ($row = db_fetch_object($result)) {
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db_query("DELETE FROM {weblinks} WHERE lid = '%s'", $row->lid);
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}
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}
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function weblink_validate(&$node) {
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if ($node->url) {
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if(!valid_url($node->url, TRUE)) {
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form_set_error('url', t('The weblink is not valid. Make sure you have included the http:// part. Other valid protocols are https and ftp'));
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}
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else {
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$result = db_query("SELECT n.nid FROM {weblinks} w INNER JOIN {weblinks_node} wn ON w.lid = wn.lid INNER JOIN {node} n ON wn.nid = n.nid WHERE url_md5 = '%s' AND NOT(n.nid = %d)", md5($node->url), $node->nid);
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if (db_num_rows($result) > 0) {
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$weblink = db_fetch_object($result);
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$othernode = node_load(array("nid" => $weblink->nid));
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form_set_error('url', t('A weblink "%link-to-existing" using that link already exists', array("%link-to-existing" => l($othernode->title, 'node/' . $othernode->nid . '/edit'))));
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}
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}
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}
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elseif (isset($node->url) && (trim($node->url) == '')) {
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form_set_error('url', t('You have to specify a weblink.'));
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}
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}
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function weblink_load($node) {
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return db_fetch_object(db_query("SELECT * FROM {weblinks_node} n INNER JOIN {weblinks} w ON n.lid = w.lid WHERE n.nid = '%d' LIMIT 1", $node->nid));
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}
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/**
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* Block display functions
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*/
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function weblink_block($op = "list", $delta = 0) {
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if ($op == "list") {
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return array(
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0 => array('info' => t("Top weblinks")),
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1 => array('info' => t("Latest weblinks")),
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);
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}
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elseif ($op == 'view') {
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switch ($delta) {
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case 0:
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return array(
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'subject' => t("Top weblinks"),
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'content' => weblink_block_list('top')
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);
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case 1:
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return array(
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'subject' => t("Latest weblinks"),
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'content' => weblink_block_list('new')
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);
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}
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}
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}
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function weblink_block_list($type = 'top') {
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$orderby = ($type == 'new') ? 'n.created' : 'w.clicks';
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return node_title_list(db_query_range(db_rewrite_sql("SELECT n.nid, n.title, w.url, w.clicks FROM {node} n INNER JOIN {weblinks_node} wn on n.nid = wn.nid INNER JOIN {weblinks} w ON wn.lid = w.lid WHERE n.type = 'weblink' AND n.status = 1 AND n.moderate = 0 ORDER by $orderby DESC"),0, 10));
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}
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/**
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@addtogroup themeable
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@{
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**/
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function theme_weblink_link($node) {
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return l(t('visit %link', array('%link' => $node->title)), "weblink/goto/$node->lid", array('class' => 'outgoing', 'title' => t('visit %link', array('%link' => $node->url)))) . (user_access("access statistics") ? " ({$node->clicks})" : "");
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}
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/** @} End of addtogroup themeable */
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function weblink_goto($lid = NULL, $url = NULL) {
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if ($lid) {
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$result = db_query("SELECT url FROM {weblinks} WHERE lid = '%d'", $lid);
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}
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elseif ($url) {
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$result = db_query("SELECT url FROM {weblinks} WHERE url_md5 = '%s'", md5($url));
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}
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if ($weblink = db_fetch_object($result)) {
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db_query("UPDATE {weblinks} SET clicks = clicks + 1 WHERE lid = '%d'", $lid);
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header("Location: " . $weblink->url);
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}
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else {
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drupal_not_found();
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}
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}
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/**
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* Add a "(visit)" link to the RSS excerpt if it is a weblink.
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*/
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function weblink_nodeapi(&$node, $op, $teaser, $page) {
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switch ($op) {
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case 'rss item':
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if ($node->type == 'weblink') {
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$node->teaser .= l(t('visit %link', array('%link' => $node->title)), "weblink/goto/$node->lid", array('class' => 'outgoing', 'title' => t('visit %link', array('%link' => $node->url))), NULL, NULL, TRUE) . (user_access("access statistics") ? " ({$node->clicks})" : "");
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}
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break;
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}
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}
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?>
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