Latest messaging system
Needs a lot of work still but you can now manage your contact list and send/receive messages from people so it's usable!
This commit is contained in:
moodler
+636
-12
@@ -1,15 +1,211 @@
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<?php
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/// library functions for messaging
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/// todo: add some functions
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define ('MESSAGE_SHORTLENGTH', 300);
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function message_print_contacts() {
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global $USER;
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$contacts = get_records('message_contacts', 'userid', $USER->id, '', 'id, contactid');
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echo 'contacts';
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global $USER, $CFG;
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$timetoshowusers = 300; //Seconds default
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if (isset($CFG->block_online_users_timetosee)) {
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$timetoshowusers = $CFG->block_online_users_timetosee * 60;
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}
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$timefrom = time()-$timetoshowusers;
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/// get lists of contacts and unread messages
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$onlinecontacts = get_records_sql("SELECT u.id, u.firstname, u.lastname, u.picture
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FROM {$CFG->prefix}user u, {$CFG->prefix}message_contacts mc
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WHERE mc.userid='$USER->id' AND u.id=mc.contactid AND u.lastaccess>=$timefrom
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AND mc.blocked='0'
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ORDER BY u.lastaccess DESC");
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$offlinecontacts = get_records_sql("SELECT u.id, u.firstname, u.lastname, u.picture
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FROM {$CFG->prefix}user u, {$CFG->prefix}message_contacts mc
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WHERE mc.userid='$USER->id' AND u.id=mc.contactid AND u.lastaccess<$timefrom
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AND mc.blocked='0'
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ORDER BY u.lastaccess DESC");
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$unreadmessages = get_records_sql("SELECT m.id, m.useridfrom, u.firstname, u.lastname, u.picture
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FROM {$CFG->prefix}user u, {$CFG->prefix}message m
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WHERE m.useridto='$USER->id' AND u.id=m.useridfrom");
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$blockedcontacts = get_records_select('message_contacts', "userid='$USER->id' AND blocked='1'", '', 'contactid, id');
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echo '<table id="message_contacts" align="center" cellspacing="2" cellpadding="0">';
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echo '<tr><td colspan="2"><strong>'.get_string('mycontacts', 'message').'</strong></td></tr>';
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/// print out list of online contacts
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echo '<tr><td width="20"> </td>';
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echo '<td id="message_onlinecontacts">';
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$countcontacts = (is_array($onlinecontacts)) ? count($onlinecontacts) : 0;
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echo '<table class="message_contacts">';
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echo '<tr><td colspan="3">';
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echo '<strong>'.get_string('onlinecontacts', 'message', $countcontacts).'</strong>';
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echo '</td></tr>';
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if (!empty($onlinecontacts)) {
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foreach ($onlinecontacts as $contact) {
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if ($contact->blocked == 1) continue;
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$strcontact = '';
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/// are there any unread messages for this contact?
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if (($unread = message_count_messages($unreadmessages, 'useridfrom', $contact->id)) > 0) {
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$strcontact .= '<strong>( '.get_string('unreadmessages', 'message', $unread).')</strong>';
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}
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/// link to remove from contact list
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$strcontact .= ' [<a href="index.php?tab=contacts&removecontact='.$contact->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('removecontact', 'message').'">'.
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get_string('removecontact', 'message').'</a>]</td>';
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echo '<tr><td class="message_pic">';
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print_user_picture($contact->id, SITEID, $contact->picture, 20, false, false);
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echo '</td>';
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echo '<td class="message_contact">';
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link_to_popup_window("/message/user.php?id=$contact->id", "message_$contact->id", fullname($contact), 400, 400, get_string('sendmessageto', 'message', fullname($contact)));
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echo '</td>';
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echo '<td class="message_link">'.$strcontact.'</td>';
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echo '</tr>';
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}
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}
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echo '<tr><td colspan="3"> </td></tr>';
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echo '</table>';
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echo '</td></tr>';
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/// print out list of offline contacts
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echo '<tr><td width="20"> </td>';
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echo '<td id="message_offlinecontacts">';
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$countcontacts = (is_array($offlinecontacts)) ? count($offlinecontacts) : 0;
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echo '<table class="message_contacts">';
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echo '<tr><td colspan="3">';
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echo '<strong>'.get_string('offlinecontacts', 'message', $countcontacts).'</strong>';
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echo '</td></tr>';
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if (!empty($offlinecontacts)) {
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foreach ($offlinecontacts as $contact) {
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if ($contact->blocked == 1) continue;
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$strcontact = '';
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/// are there any unread messages for this contact?
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if (($unread = message_count_messages($unreadmessages, 'useridfrom', $contact->id)) > 0) {
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$strcontact .= '<strong>( '.get_string('unreadmessages', 'message', $unread).')</strong>';
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}
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/// link to remove from contact list
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$strcontact .= ' [<a href="index.php?tab=contacts&removecontact='.$contact->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('removecontact', 'message').'">'.
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get_string('removecontact', 'message').'</a>]</td>';
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echo '<tr><td class="message_pic">';
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print_user_picture($contact->id, SITEID, $contact->picture, 20, false, false);
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echo '</td>';
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echo '<td class="message_contact">';
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link_to_popup_window("/message/user.php?id=$contact->id", "message_$contact->id", fullname($contact), 400, 400, get_string('sendmessageto', 'message', fullname($contact)));
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echo '</td>';
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echo '<td class="message_link">'.$strcontact.'</td>';
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echo '</tr>';
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}
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}
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echo '<tr><td colspan="3"> </td></tr>';
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echo '</table>';
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echo '</td></tr>';
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/// Cycle through messages and extract those that are from unknown contacts
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/// We can take advantage of the keys for $onlinecontacts and $offlinecontacts
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/// which are set to the userid and therefore we just need to see if the key
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/// exists in either of those arrays
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/// We can also discard any messages from users in our blocked contact list
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$unknownmessages = array();
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if (!empty($unreadmessages)) {
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/// make sure we have valid arrays to test against - they may be boolean false
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if (empty($onlinecontacts)) $onlinecontacts = array();
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if (empty($offlinecontacts)) $offlinecontacts = array();
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if (empty($blockedcontacts)) $blockedcontacts = array();
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foreach ($unreadmessages as $unreadmessage) {
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if (array_key_exists($unreadmessage->useridfrom, $onlinecontacts) or
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array_key_exists($unreadmessage->useridfrom, $offlinecontacts) or
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array_key_exists($unreadmessage->useridfrom, $blockedcontacts) ) {
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continue;
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}
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if (!isset($unknownmessages[$unreadmessage->useridfrom])) {
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$message = $unreadmessage;
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$message->count = 1;
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$unknownmessages[$unreadmessage->useridfrom] = $message;
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} else {
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$unknownmessages[$unreadmessage->useridfrom]->count++;
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}
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}
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}
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/// print out list of incoming contacts
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if (!empty($unknownmessages)) {
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echo '<tr><td colspan="2">';
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echo '<strong>'.get_string('incomingcontacts', 'message', count($unknownmessages)).'</strong>';
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echo '</td></tr>';
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echo '<tr><td width="20"> </td>';
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echo '<td id="message_unknowncontacts">';
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echo '<table class="message_contacts">';
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foreach ($unknownmessages as $messageuser) {
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$strcontact = '<strong>( '.get_string('unreadmessages', 'message', $messageuser->count).')</strong>';
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/// link to add to contact list
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$strcontact .= ' [<a href="index.php?tab=contacts&addcontact='.$messageuser->useridfrom.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('addcontact', 'message').'">'.
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get_string('addcontact', 'message').'</a>]</td>';
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$strblock = '[<a href="index.php?tab=contacts&blockcontact='.$messageuser->useridfrom.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('blockcontact', 'message').'">'.
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get_string('blockcontact', 'message').'</a>]</td>';
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echo '<tr><td class="message_pic">';
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print_user_picture($messageuser->useridfrom, SITEID, $messageuser->picture, 20, false, false);
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echo '</td>';
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echo '<td class="message_contact">';
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link_to_popup_window("/message/user.php?id=$messageuser->useridfrom", "message_$messageuser->useridfrom", fullname($messageuser), 400, 400, get_string('sendmessageto', 'message', fullname($messageuser)));
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echo '</td>';
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echo '<td class="message_link">'.$strcontact.'</td>';
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echo '<td class="message_link">'.$strblock.'</td>';
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echo '</tr>';
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}
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echo '</table>';
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echo '</td></tr>';
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}
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echo '</table>';
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}
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/// $messagearray is an array of objects
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/// $field is a valid property of object
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/// $value is the value $field should equal to be counted
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/// if $field is empty then return count of the whole array
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/// if $field is non-existent then return 0;
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function message_count_messages($messagearray, $field='', $value='') {
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if (!is_array($messagearray)) return 0;
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if ($field == '' or empty($messagearray)) return count($messagearray);
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$count = 0;
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foreach ($messagearray as $message) {
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$count += ($message->$field == $value) ? 1 : 0;
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}
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return $count;
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}
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function message_print_search() {
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global $USER;
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@@ -18,7 +214,6 @@ function message_print_search() {
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message_print_search_results($frm);
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} else {
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/// todo make the following queries more efficient
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if ($teachers = get_records('user_teachers', 'userid', $USER->id, '', 'id, course')) {
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$courses = get_courses('all', 'c.sortorder ASC', 'c.id, c.shortname');
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@@ -34,21 +229,450 @@ function message_print_search() {
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}
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function message_print_settings() {
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global $ME, $USER;
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if ($frm = data_submitted()) {
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echo 'settings submitted - quick do something';
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$pref = array();
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$pref['message_showmessagewindow'] = (isset($frm->showmessagewindow)) ? '1' : '0';
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$pref['message_beepnewmessage'] = (isset($frm->beepnewmessage)) ? '1' : '0';
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$pref['message_maxmessages'] = ((int)$frm->maxmessages > 0) ? (int)$frm->maxmessages : '20';
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$pref['message_deletemessagesdays'] = ((int)($frm->deletemessagesdays) > 0) ? (int)$frm->deletemessagesdays : '30';
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$pref['message_emailmessages'] = (isset($frm->emailmessages)) ? '1' : '0';
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$pref['message_emailaddress'] = (!empty($frm->emailaddress)) ? $frm->emailaddress : $USER->email;
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$pref['message_emailformat'] = (isset($frm->emailformat)) ? $frm->emailformat : FORMAT_PLAIN;
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$pref['message_emailtimenosee'] = ((int)$frm->emailtimenosee > 0) ? (int)$frm->emailtimenosee : '10';
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set_user_preferences($pref);
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redirect($ME, get_string('settingssaved', 'message'), 3);
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}
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$cbshowmessagewindow = (get_user_preferences('message_showmessagewindow', 1) == '1') ? 'checked="checked"' : '';
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$cbbeepnewmessage = (get_user_preferences('message_beepnewmessage', 1) == '1') ? 'checked="checked"' : '';
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$txmaxmessages = get_user_preferences('message_maxmessages', 20);
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$txdeletemessagesdays = get_user_preferences('message_deletemessagesdays', 30);
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$cbemailmessages = (get_user_preferences('message_emailmessages', 1) == '1') ? 'checked="checked"' : '';
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$txemailaddress = get_user_preferences('message_emailaddress', $USER->email);
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$txemailtimenosee = get_user_preferences('message_emailtimenosee', 10);
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$format_select = choose_from_menu( array(FORMAT_PLAIN => get_string('formatplain'),
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FORMAT_HTML => get_string('formathtml')),
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'emailformat',
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get_user_preferences('message_emailformat', FORMAT_PLAIN),
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false, '', '0', true );
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include('settings.html');
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}
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function message_add_contact($contactid, $blocked=0) {
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global $USER;
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if (!record_exists('user', 'id', $contactid)) { // invalid userid
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return false;
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}
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if (($contact = get_record('message_contacts', 'userid', $USER->id, 'contactid', $contactid)) !== false) {
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/// record already exists - we may be changing blocking status
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if ($contact->blocked !== $blocked) {
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/// change to blocking status
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$contact->blocked = $blocked;
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return update_record('message_contacts', $contact);
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} else {
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/// no changes to blocking status
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return true;
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}
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} else {
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echo 'settings form';
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/// new contact record
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unset($contact);
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$contact->userid = $USER->id;
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$contact->contactid = $contactid;
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$contact->blocked = $blocked;
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return insert_record('message_contacts', $contact, false);
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}
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}
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function message_remove_contact($contactid) {
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global $USER;
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return delete_records('message_contacts', 'userid', $USER->id, 'contactid', $contactid);
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}
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function message_unblock_contact($contactid) {
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return message_add_contact($contactid, 0);
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}
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function message_block_contact($contactid) {
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return message_add_contact($contactid, 1);
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}
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function message_get_contact($contactid) {
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global $USER;
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return get_record('message_contacts', 'userid', $USER->id, 'contactid', $contactid);
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}
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function message_print_search_results($frm) {
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if (!empty($frm->personsubmit)) {
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echo 'searched for person';
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} else if (!empty($frm->keywordssubmit)) {
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echo 'searched for keywords';
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global $USER;
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echo '<div align="center">';
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/// search for person
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if (!empty($frm->personsubmit) and !empty($frm->name)) {
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if ($frm->mycourses) {
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$users = array();
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$mycourses = get_my_courses($USER->id);
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foreach ($mycourses as $mycourse) {
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if (is_array($susers = message_search_users($mycourse->id, $frm->name))) {
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foreach ($susers as $suser) $users[$suser->id] = $suser;
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}
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}
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} else {
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$users = message_search_users(SITEID, $frm->name);
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}
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if (!empty($users)) {
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echo '<strong>'.get_string('userssearchresults', 'message', count($users)).'</strong>';
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echo '<table class="message_users">';
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foreach ($users as $user) {
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if (($contact = message_get_contact($user->id)) !== false) {
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if ($contact->blocked == 0) { /// not blocked
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$strcontact = '[<a href="index.php?tab=contacts&removecontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('removecontact', 'message').'">'.
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get_string('removecontact', 'message').'</a>]</td>';
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$strblock = '[<a href="index.php?tab=contacts&blockcontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('blockcontact', 'message').'">'.
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get_string('blockcontact', 'message').'</a>]</td>';
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} else { // blocked
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$strcontact = '[<a href="index.php?tab=contacts&unblockcontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('addcontact', 'message').'">'.
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get_string('addcontact', 'message').'</a>]</td>';
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$strblock = '[<a href="index.php?tab=contacts&removecontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('unblockcontact', 'message').'">'.
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get_string('unblockcontact', 'message').'</a>]</td>';
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}
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} else {
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$strcontact = '[<a href="index.php?tab=contacts&addcontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('addcontact', 'message').'">'.
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get_string('addcontact', 'message').'</a>]</td>';
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$strblock = '[<a href="index.php?tab=contacts&blockcontact='.$user->id.
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'&sesskey='.$USER->sesskey.'" title="'.
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get_string('blockcontact', 'message').'">'.
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get_string('blockcontact', 'message').'</a>]</td>';
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}
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echo '<tr><td class="message_pic">';
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print_user_picture($user->id, SITEID, $user->picture, 20, false, false);
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echo '</td>';
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echo '<td class="message_contact">';
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link_to_popup_window("/message/user.php?id=$user->id", "message_$user->id", fullname($user), 400, 400, get_string('sendmessageto', 'message', fullname($user)));
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echo '</td>';
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echo '<td class="message_link">'.$strcontact.'</td>';
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echo '<td class="message_link">'.$strblock.'</td>';
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echo '</tr>';
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}
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echo '</table>';
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} else {
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notify(get_string('nosearchresults', 'message'));
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}
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/// search messages for keywords
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} else if (!empty($frm->keywordssubmit) and !empty($frm->keywords)) {
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$keywords = explode(' ', $frm->keywords);
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$tome = false;
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$fromme = false;
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$courseid = 'none';
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switch ($frm->keywordsoption) {
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case 'tome':
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$tome = true;
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break;
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case 'fromme':
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$fromme = true;
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break;
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case 'allmine':
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$tome = true;
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$fromme = true;
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break;
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case 'allusers':
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$courseid = SITEID;
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break;
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case 'courseusers':
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$courseid = $frm->courseid;
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break;
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default:
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$tome = true;
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$fromme = true;
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}
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|
||||
if (($messages = message_search($keywords, $fromme, $tome, $courseid)) !== false) {
|
||||
|
||||
/// get a list of contacts
|
||||
$contacts = get_records_sql("SELECT contactid, blocked FROM {$CFG->prefix}message_contacts
|
||||
WHERE userid='$USER->id'");
|
||||
|
||||
echo '<strong>'.get_string('keywordssearchresults', 'message', count($messages)).'</strong>';
|
||||
echo '<table class="message_users">';
|
||||
|
||||
foreach ($messages as $message) {
|
||||
/// ignore messages from blocked users
|
||||
if ((!$frm->includeblocked) and isset($contacts[$message->useridfrom]) and ($contacts[$message->useridfrom]->blocked == 1)) {
|
||||
continue;
|
||||
}
|
||||
echo '<tr><td class="message_pic">';
|
||||
print_user_picture($message->useridfrom, SITEID, $message->picture, 20, false, false);
|
||||
echo '</td>';
|
||||
echo '<td class="message_contact">';
|
||||
link_to_popup_window("/message/user.php?id=$message->useridfrom", "message_$message->useridfrom", fullname($message), 400, 400, get_string('sendmessageto', 'message', fullname($message)));
|
||||
echo '</td>';
|
||||
echo '<td>'.message_shorten_message($message->message, 20).'</td>';
|
||||
echo '</tr>';
|
||||
}
|
||||
|
||||
echo '</table>';
|
||||
|
||||
} else {
|
||||
notify(get_string('nosearchresults', 'message'));
|
||||
}
|
||||
|
||||
|
||||
/// what the ????, probably an empty search string, duh!
|
||||
} else {
|
||||
notify(get_string('emptysearchstring', 'message'));
|
||||
}
|
||||
|
||||
print_single_button($ME, array( 'tab' => 'search'), get_string('newsearch') );
|
||||
print_single_button($ME, array( 'tab' => 'search'), get_string('newsearch', 'message') );
|
||||
|
||||
echo '</div>';
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Search through course users
|
||||
*
|
||||
* If $coursid specifies the site course then this function searches
|
||||
* through all undeleted and confirmed users
|
||||
*
|
||||
* @uses $CFG
|
||||
* @uses SITEID
|
||||
* @param int $courseid The course in question.
|
||||
* @param string $searchtext ?
|
||||
* @param string $sort ?
|
||||
* @param string $exceptions ?
|
||||
* @return array An array of {@link $USER} records.
|
||||
* @todo Finish documenting this function
|
||||
*/
|
||||
function message_search_users($courseid, $searchtext, $sort='', $exceptions='') {
|
||||
global $CFG;
|
||||
|
||||
switch ($CFG->dbtype) {
|
||||
case 'mysql':
|
||||
$fullname = ' CONCAT(u.firstname," ",u.lastname) ';
|
||||
$LIKE = 'LIKE';
|
||||
break;
|
||||
case 'postgres7':
|
||||
$fullname = " u.firstname||' '||u.lastname ";
|
||||
$LIKE = 'ILIKE';
|
||||
break;
|
||||
default:
|
||||
$fullname = ' u.firstname||" "||u.lastname ';
|
||||
$LIKE = 'ILIKE';
|
||||
}
|
||||
|
||||
if (!empty($exceptions)) {
|
||||
$except = ' AND u.id NOT IN ('. $exceptions .') ';
|
||||
} else {
|
||||
$except = '';
|
||||
}
|
||||
|
||||
if (!empty($sort)) {
|
||||
$order = ' ORDER BY '. $sort;
|
||||
} else {
|
||||
$order = '';
|
||||
}
|
||||
|
||||
$select = 'u.deleted = \'0\' AND u.confirmed = \'1\'';
|
||||
|
||||
if (!$courseid or $courseid == SITEID) {
|
||||
return get_records_sql("SELECT u.id, u.firstname, u.lastname
|
||||
FROM {$CFG->prefix}user u
|
||||
WHERE $select
|
||||
AND ($fullname $LIKE '%$searchtext%')
|
||||
$except $order");
|
||||
} else {
|
||||
|
||||
|
||||
if (!$teachers = get_records_sql("SELECT u.id, u.firstname, u.lastname
|
||||
FROM {$CFG->prefix}user u,
|
||||
{$CFG->prefix}user_teachers s
|
||||
WHERE $select AND s.course = '$courseid' AND s.userid = u.id
|
||||
AND ($fullname $LIKE '%$searchtext%')
|
||||
$except $order")) {
|
||||
$teachers = array();
|
||||
}
|
||||
if (!$students = get_records_sql("SELECT u.id, u.firstname, u.lastname
|
||||
FROM {$CFG->prefix}user u,
|
||||
{$CFG->prefix}user_students s
|
||||
WHERE $select AND s.course = '$courseid' AND s.userid = u.id
|
||||
AND ($fullname $LIKE '%$searchtext%')
|
||||
$except $order")) {
|
||||
$students = array();
|
||||
}
|
||||
return $teachers + $students;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
function message_search($searchterms, $fromme=true, $tome=true, $courseid='none') {
|
||||
/// Returns a list of posts found using an array of search terms
|
||||
/// eg word +word -word
|
||||
///
|
||||
|
||||
global $CFG, $USER;
|
||||
|
||||
/// Some differences in syntax for PostgreSQL
|
||||
if ($CFG->dbtype == "postgres7") {
|
||||
$LIKE = "ILIKE"; // case-insensitive
|
||||
$NOTLIKE = "NOT ILIKE"; // case-insensitive
|
||||
$REGEXP = "~*";
|
||||
$NOTREGEXP = "!~*";
|
||||
} else {
|
||||
$LIKE = "LIKE";
|
||||
$NOTLIKE = "NOT LIKE";
|
||||
$REGEXP = "REGEXP";
|
||||
$NOTREGEXP = "NOT REGEXP";
|
||||
}
|
||||
|
||||
$messagesearch = "";
|
||||
|
||||
foreach ($searchterms as $searchterm) {
|
||||
if (strlen($searchterm) < 2) {
|
||||
continue;
|
||||
}
|
||||
if ($messagesearch) {
|
||||
$messagesearch .= " AND ";
|
||||
}
|
||||
|
||||
if (substr($searchterm,0,1) == "+") {
|
||||
$searchterm = substr($searchterm,1);
|
||||
$messagesearch .= " m.message $REGEXP '(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)' ";
|
||||
} else if (substr($searchterm,0,1) == "-") {
|
||||
$searchterm = substr($searchterm,1);
|
||||
$messagesearch .= " m.message $NOTREGEXP '(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)' ";
|
||||
} else {
|
||||
$messagesearch .= " m.message $LIKE '%$searchterm%' ";
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
$messagesearch = "($messagesearch) ";
|
||||
|
||||
|
||||
/////////////////////////////////////
|
||||
|
||||
if ($courseid !== SITEID) {
|
||||
if ($courseid == 'none') {
|
||||
if ($fromme and $tome) $messagesearch .= "AND (m.useridfrom='$USER->id' OR m.useridto='$USER->id') ";
|
||||
elseif ($fromme) $messagesearch .= "AND m.useridfrom='$USER->id' ";
|
||||
elseif ($tome) $messagesearch .= "AND m.useridto='$USER->id' ";
|
||||
} else {
|
||||
/// Code in here for searching for messages between users in a particular course
|
||||
/// This is not implemented at present because of potential abuse issues
|
||||
/// Temporary measure, in case we ever get here is all the users messages
|
||||
$messagesearch .= "AND (m.useridto='$USER->id' OR m.useridfrom='$USER->id') ";
|
||||
}
|
||||
}
|
||||
|
||||
$messages = array();
|
||||
|
||||
if (($m_unread = get_records_sql("SELECT m.id, m.useridfrom, m.message, u.firstname, u.lastname, u.picture
|
||||
FROM {$CFG->prefix}user u, {$CFG->prefix}message m
|
||||
WHERE $messagesearch AND u.id=m.useridfrom ") ) !== false) {
|
||||
foreach ($m_unread as $m) $messages[] = $m;
|
||||
}
|
||||
|
||||
if (($m_read = get_records_sql("SELECT m.id, m.useridfrom, m.message_read, u.firstname, u.lastname, u.picture
|
||||
FROM {$CFG->prefix}user u, {$CFG->prefix}message m
|
||||
WHERE $messagesearch AND u.id=m.useridfrom ") ) !== false) {
|
||||
foreach ($m_read as $m) $messages[] = $m;
|
||||
}
|
||||
|
||||
///////////////////////////////////////
|
||||
|
||||
return (empty($messages)) ? false : $messages;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/// Borrowed with changes from mod/forum/lib.php
|
||||
function message_shorten_message($message, $minlength=0) {
|
||||
// Given a post object that we already know has a long message
|
||||
// this function truncates the message nicely to the first
|
||||
// sane place between $CFG->forum_longpost and $CFG->forum_shortpost
|
||||
|
||||
$i = 0;
|
||||
$tag = false;
|
||||
$length = strlen($message);
|
||||
$count = 0;
|
||||
$stopzone = false;
|
||||
$truncate = 0;
|
||||
if ($minlength == 0) $minlength = MESSAGE_SHORTLENGTH;
|
||||
|
||||
|
||||
for ($i=0; $i<$length; $i++) {
|
||||
$char = $message[$i];
|
||||
|
||||
switch ($char) {
|
||||
case "<":
|
||||
$tag = true;
|
||||
break;
|
||||
case ">":
|
||||
$tag = false;
|
||||
break;
|
||||
default:
|
||||
if (!$tag) {
|
||||
if ($stopzone) {
|
||||
if ($char == '.' or $char == ' ') {
|
||||
$truncate = $i+1;
|
||||
break 2;
|
||||
}
|
||||
}
|
||||
$count++;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (!$stopzone) {
|
||||
if ($count > $minlength) {
|
||||
$stopzone = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!$truncate) {
|
||||
$truncate = $i;
|
||||
}
|
||||
|
||||
return substr($message, 0, $truncate);
|
||||
}
|
||||
|
||||
|
||||
|
||||
?>
|
||||
|
||||
Reference in New Issue
Block a user