streams/Code/Module/Stream.php
2023-07-23 21:44:29 +10:00

707 lines
27 KiB
PHP

<?php
namespace Code\Module;
use App;
use Code\Web\Controller;
use Code\Lib\AccessList;
use Code\Lib\Apps;
use Code\Lib\PConfig;
use Code\Lib\PermissionDescription;
use Code\Lib\Channel;
use Code\Lib\Navbar;
use Code\Lib\Libacl;
use Code\Extend\Hook;
use Code\Render\Theme;
require_once('include/conversation.php');
class Stream extends Controller
{
// State passed in from the Update module.
public int $profile_uid = 0;
public int $loading = 0;
public int $updating = 0;
public function init()
{
if (!local_channel()) {
return;
}
// setup identity information for page
$channel = App::get_channel();
App::$profile_uid = local_channel();
App::$data['channel'] = $channel;
head_set_icon($channel['xchan_photo_s']);
}
public function get()
{
if (!local_channel()) {
$_SESSION['return_url'] = App::$query_string;
return login();
}
$o = '';
if ($this->loading && intval(App::$pager['page']) <= 1) {
$_SESSION['loadtime_stream'] = datetime_convert();
PConfig::Set(local_channel(), 'system', 'loadtime_stream', $_SESSION['loadtime_stream']);
// stream is a superset of channel when it comes to notifications
$_SESSION['loadtime_channel'] = datetime_convert();
PConfig::Set(local_channel(), 'system', 'loadtime_channel', $_SESSION['loadtime_channel']);
}
$arr = ['query' => App::$query_string];
Hook::call('stream_content_init', $arr);
$channel = ((isset(App::$data['channel'])) ? App::$data['channel'] : null);
// if called from liveUpdate() we will not have called Stream->init() on this request and $channel will not be set
if (!$channel) {
$channel = App::get_channel();
}
$item_normal = item_normal();
$item_normal_update = item_normal_update();
$group = 0;
// $nouveau indicates the output is an unthreaded timeline.
$nouveau = false;
$datequery = ((x($_GET, 'dend') && is_a_date_arg($_GET['dend'])) ? notags($_GET['dend']) : '');
$datequery2 = ((x($_GET, 'dbegin') && is_a_date_arg($_GET['dbegin'])) ? notags($_GET['dbegin']) : '');
$static = ((x($_GET, 'static')) ? intval($_GET['static']) : 0);
$gid = ((x($_GET, 'gid')) ? $_REQUEST['gid'] : 0);
$category = ((x($_REQUEST, 'cat')) ? $_REQUEST['cat'] : '');
$hashtags = ((x($_REQUEST, 'tag')) ? $_REQUEST['tag'] : '');
$verb = ((x($_REQUEST, 'verb')) ? $_REQUEST['verb'] : '');
$dm = ((x($_REQUEST, 'dm')) ? $_REQUEST['dm'] : 0);
$distance = ((x($_REQUEST, 'distance')) ? $_REQUEST['distance'] : 0);
$distance_from = ((x($_REQUEST,'distance_from')) ? notags(trim($_REQUEST['distance_from'])) : '');
if ($distance_from) {
$tmp = preg_split('/[ ,\/]/', $distance_from);
$distance_lat = floatval($tmp[0]);
$distance_lon = floatval($tmp[1]);
if (! ($distance_lat || $distance_lon)) {
$distance = 0;
}
}
$c_order = get_pconfig(local_channel(), 'mod_stream', 'order', 0);
switch ($c_order) {
case 0:
$order = 'comment';
break;
case 1:
$order = 'post';
break;
case 2:
$nouveau = true;
break;
case 3:
$order = 'received';
break;
case 4:
$order = 'distance';
break;
}
$search = ($_GET['search'] ?? '');
if ($search) {
$_GET['netsearch'] = escape_tags($search);
if (str_starts_with($search, '@')) {
$r = q(
"select abook_id from abook left join xchan on abook_xchan = xchan_hash where xchan_name = '%s' and abook_channel = %d limit 1",
dbesc(substr($search, 1)),
intval(local_channel())
);
if ($r) {
$_GET['cid'] = $r[0]['abook_id'];
$search = $_GET['search'] = '';
}
} elseif (str_starts_with($search, '#')) {
$hashtags = substr($search, 1);
$search = $_GET['search'] = '';
}
}
if ($datequery) {
$order = 'post';
}
// filter by collection (e.g. group)
$vg = false;
if ($gid) {
if (str_starts_with($gid, ':')) {
$g = substr($gid, 1);
switch ($g) {
case '1':
$r = [['hash' => 'connections:' . $channel['channel_hash']]];
$vg = t('Connections');
break;
case '2':
$r = [['hash' => 'zot:' . $channel['channel_hash']]];
$vg = t('Nomad');
break;
case '3':
$r = [['hash' => 'activitypub:' . $channel['channel_hash']]];
$vg = t('ActivityPub');
break;
default:
break;
}
} else {
$r = q(
"SELECT * FROM pgrp WHERE id = %d AND uid = %d LIMIT 1",
intval($gid),
intval(local_channel())
);
if (!$r) {
if ($this->updating) {
killme();
}
notice(t('Access list not found') . EOL);
goaway(z_root() . '/stream');
}
}
$group = $gid;
$group_hash = $r[0]['hash'];
}
$default_cmin = ((Apps::system_app_installed(local_channel(), 'Friend Zoom')) ? get_pconfig(local_channel(), 'affinity', 'cmin', 0) : (-1));
$default_cmax = ((Apps::system_app_installed(local_channel(), 'Friend Zoom')) ? get_pconfig(local_channel(), 'affinity', 'cmax', 99) : (-1));
$cid = ((x($_GET, 'cid')) ? intval($_GET['cid']) : 0);
$draft = ((x($_GET, 'draft')) ? intval($_GET['draft']) : 0);
$star = ((x($_GET, 'star')) ? intval($_GET['star']) : 0);
$liked = ((x($_GET, 'liked')) ? intval($_GET['liked']) : 0);
$conv = ((x($_GET, 'conv')) ? intval($_GET['conv']) : 0);
$spam = ((x($_GET, 'spam')) ? intval($_GET['spam']) : 0);
$cmin = ((array_key_exists('cmin', $_GET)) ? intval($_GET['cmin']) : $default_cmin);
$cmax = ((array_key_exists('cmax', $_GET)) ? intval($_GET['cmax']) : $default_cmax);
$file = ((x($_GET, 'file')) ? $_GET['file'] : '');
$xchan = ((x($_GET, 'xchan')) ? $_GET['xchan'] : '');
$net = ((x($_GET, 'net')) ? $_GET['net'] : '');
$pf = ((x($_GET, 'pf')) ? $_GET['pf'] : '');
$deftag = '';
if (x($_GET, 'search') || $file || (!$pf && $cid)) {
$nouveau = true;
}
if ($cid) {
$cid_r = q(
"SELECT abook.abook_xchan, xchan.xchan_addr, xchan.xchan_name, xchan.xchan_url, xchan.xchan_photo_s, xchan.xchan_type from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d and abook_channel = %d and abook_blocked = 0 limit 1",
intval($cid),
intval(local_channel())
);
if (!$cid_r) {
if ($this->updating) {
killme();
}
notice(t('No such channel') . EOL);
goaway(z_root() . '/stream');
}
}
$status_editor = '';
if (!$this->updating) {
// search terms header
// hide the terms we use to search for videos from
// the activity_filter widget because it doesn't look very good
if ($search && $search !== 'video]') {
$o .= replace_macros(
Theme::get_template("section_title.tpl"),
['$title' => t('Search Results For:') . ' ' . htmlspecialchars($search, ENT_COMPAT, 'UTF-8')]
);
}
$body = EMPTY_STR;
Navbar::set_selected('Stream');
$channel_acl = [
'allow_cid' => $channel['channel_allow_cid'],
'allow_gid' => $channel['channel_allow_gid'],
'deny_cid' => $channel['channel_deny_cid'],
'deny_gid' => $channel['channel_deny_gid']
];
$x = [
'is_owner' => true,
'allow_location' => ((intval(get_pconfig($channel['channel_id'], 'system', 'use_browser_location'))) ? '1' : ''),
'default_location' => $channel['channel_location'],
'nickname' => $channel['channel_address'],
'lockstate' => (($channel['channel_allow_cid'] || $channel['channel_allow_gid'] || $channel['channel_deny_cid'] || $channel['channel_deny_gid']) ? 'lock' : 'unlock'),
'acl' => Libacl::populate($channel_acl, true, PermissionDescription::fromGlobalPermission('view_stream'), Libacl::get_post_aclDialogDescription(), 'acl_dialog_post'),
'permissions' => $channel_acl,
'bang' => EMPTY_STR,
'body' => $body,
'visitor' => true,
'profile_uid' => local_channel(),
'editor_autocomplete' => true,
'bbco_autocomplete' => 'bbcode',
'bbcode' => true,
'jotnets' => true,
'reset' => t('Reset form')
];
if ($deftag) {
$x['pretext'] = $deftag;
}
$status_editor = status_editor($x);
$o .= $status_editor;
$static = Channel::manual_conv_update(local_channel());
}
// We don't have to deal with ACL's on this page. You're looking at everything
// that belongs to you, hence you can see all of it. We will filter by group if
// desired.
$sql_options = (($star)
? " and item_starred = 1 "
: '');
$sql_nets = '';
$item_thread_top = ' AND item_thread_top = 1 ';
$sql_extra = '';
if ($draft) {
$item_normal = item_normal_draft();
$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE item_unpublished = 1 and item_deleted = 0 ) ";
}
$title = '';
if ($group) {
$contacts = AccessList::members(local_channel(), $group);
if ($contacts) {
$contact_str = ids_to_querystr($contacts, 'xchan', true);
$contact_name_str = ids_to_querystr($contacts, 'xchan_name', true);
} else {
$contact_str = " '0' ";
if (!$this->updating) {
info(t('Access list is empty'));
}
}
$item_thread_top = '';
$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND (( author_xchan IN ( $contact_str ) OR owner_xchan in ( $contact_str )) or allow_gid like '" . protect_sprintf('%<' . dbesc($group_hash) . '>%') . "' ) $item_normal ) ";
if (!$vg) {
$x = AccessList::rec_byhash(local_channel(), $group_hash);
}
if ($x || $vg) {
$title = replace_macros(Theme::get_template("section_title.tpl"), [
'$title' => sprintf(t('Access list: %s'), (($vg) ?: $x['gname']))
]);
}
$o = $title . $status_editor;
} elseif (isset($cid_r) && $cid_r) {
$item_thread_top = EMPTY_STR;
if ($this->loading || $this->updating) {
if (!$pf && $nouveau) {
$sql_extra = " AND author_xchan = '" . dbesc($cid_r[0]['abook_xchan']) . "' ";
} else {
$p1 = q("SELECT DISTINCT parent FROM item WHERE uid = " . intval(local_channel()) . " AND ( author_xchan = '" . dbesc($cid_r[0]['abook_xchan']) . "' OR owner_xchan = '" . dbesc($cid_r[0]['abook_xchan']) . "' ) $item_normal ");
$p2 = q("SELECT oid AS parent FROM term WHERE uid = " . intval(local_channel()) . " AND ttype in (%d, %d) AND term = '" . dbesc($cid_r[0]['xchan_name']) . "'",
intval(TERM_MENTION),
intval(TERM_FORUM)
);
$p_str = ids_to_querystr(array_merge($p1, $p2), 'parent');
if (!$p_str) {
$p_str = '0';
}
$sql_extra = " AND item.parent IN ( $p_str ) ";
}
}
$title = replace_macros(Theme::get_template('section_title.tpl'), [
'$title' => '<a href="' . zid($cid_r[0]['xchan_url']) . '" ><img src="' . zid($cid_r[0]['xchan_photo_s']) . '" alt="' . urlencode($cid_r[0]['xchan_name']) . '" /></a> <a href="' . zid($cid_r[0]['xchan_url']) . '" >' . $cid_r[0]['xchan_name'] . '</a>'
]);
$o = $title;
$o .= $status_editor;
} elseif ($xchan) {
$r = q(
"select * from xchan where xchan_hash = '%s'",
dbesc($xchan)
);
if ($r) {
$item_thread_top = '';
$sql_extra = " AND item.parent IN ( SELECT DISTINCT parent FROM item WHERE true $sql_options AND uid = " . intval(local_channel()) . " AND ( author_xchan = '" . dbesc($xchan) . "' or owner_xchan = '" . dbesc($xchan) . "' ) $item_normal ) ";
$title = replace_macros(Theme::get_template('section_title.tpl'), [
'$title' => '<a href="' . zid($r[0]['xchan_url']) . '" ><img src="' . zid($r[0]['xchan_photo_s']) . '" alt="' . urlencode($r[0]['xchan_name']) . '" /></a> <a href="' . zid($r[0]['xchan_url']) . '" >' . $r[0]['xchan_name'] . '</a>'
]);
$o = $title;
$o .= $status_editor;
} else {
notice(t('Invalid channel.') . EOL);
goaway(z_root() . '/stream');
}
}
if (x($category)) {
$sql_extra .= protect_sprintf(term_query('item', $category, TERM_CATEGORY));
}
if (x($hashtags)) {
$sql_extra .= protect_sprintf(term_query('item', $hashtags, TERM_HASHTAG, TERM_COMMUNITYTAG));
}
if (!$this->updating) {
$maxheight = get_pconfig(local_channel(), 'system', 'stream_divmore_height', 400);
// The special div is needed for liveUpdate to kick in for this page.
// We only launch liveUpdate if you aren't filtering in some incompatible
// way, and also you aren't writing a comment (discovered in javascript).
$o .= '<div id="live-stream"></div>' . "\r\n";
$o .= "<script> let profile_uid = " . local_channel()
. "; let profile_page = " . App::$pager['page']
. "; divmore_height = " . intval($maxheight) . "; </script>\r\n";
App::$page['htmlhead'] .= replace_macros(Theme::get_template('build_query.tpl'), [
'$baseurl' => z_root(),
'$pgtype' => 'stream',
'$uid' => ((local_channel()) ? local_channel() : '0'),
'$gid' => (($gid) ?: '0'),
'$cid' => (($cid) ?: '0'),
'$cmin' => (($cmin) ?: '(-1)'),
'$cmax' => (($cmax) ?: '(-1)'),
'$star' => (($star) ?: '0'),
'$liked' => (($liked) ?: '0'),
'$conv' => (($conv) ?: '0'),
'$spam' => (($spam) ?: '0'),
'$fh' => '0',
'$dm' => (($dm) ?: '0'),
'$nouveau' => (($nouveau) ?: '0'),
'$wall' => '0',
'$draft' => (($draft) ?: '0'),
'$static' => $static,
'$list' => ((x($_REQUEST, 'list')) ? intval($_REQUEST['list']) : 0),
'$page' => ((App::$pager['page'] != 1) ? App::$pager['page'] : 1),
'$search' => (($search) ? urlencode($search) : ''),
'$xchan' => (($xchan) ? urlencode($xchan) : ''),
'$order' => (($order) ? urlencode($order) : ''),
'$file' => (($file) ? urlencode($file) : ''),
'$cats' => (($category) ? urlencode($category) : ''),
'$tags' => (($hashtags) ? urlencode($hashtags) : ''),
'$dend' => $datequery,
'$mid' => '',
'$verb' => (($verb) ? urlencode($verb) : ''),
'$net' => (($net) ? urlencode($net) : ''),
'$dbegin' => $datequery2,
'$pf' => (($pf) ? intval($pf) : '0'),
'$distance' => (($distance) ? intval($distance) : '0'),
'$distance_from' => (($distance_from) ? urlencode($distance_from) : ''),
'$maxtags' => 0,
'$mintags' => 0,
]);
}
$sql_extra3 = '';
if ($datequery) {
$sql_extra3 .= protect_sprintf(sprintf(" AND item.created <= '%s' ", dbesc(datetime_convert(date_default_timezone_get(), '', $datequery))));
}
if ($datequery2) {
$sql_extra3 .= protect_sprintf(sprintf(" AND item.created >= '%s' ", dbesc(datetime_convert(date_default_timezone_get(), '', $datequery2))));
}
$sql_extra3 = (($nouveau) ? '' : $sql_extra3);
if (x($_GET, 'search')) {
$search = escape_tags($_GET['search']);
if (str_starts_with($search, '#')) {
$sql_extra .= term_query('item', substr($search, 1), TERM_HASHTAG, TERM_COMMUNITYTAG);
} else {
$sql_extra .= sprintf(
" AND (item.body like '%s' OR item.title like '%s') ",
dbesc(protect_sprintf('%' . $search . '%')),
dbesc(protect_sprintf('%' . $search . '%'))
);
}
}
if ($verb) {
// the presence of a leading dot in the verb determines
// whether to match the type of activity or the child object.
// The name 'verb' is a holdover from the earlier XML
// ActivityStreams specification.
if (str_starts_with($verb, '.')) {
$verb = substr($verb, 1);
$sql_extra .= sprintf(
" AND item.obj_type like '%s' ",
dbesc(protect_sprintf('%' . $verb . '%'))
);
} else {
$sql_extra .= sprintf(
" AND item.verb like '%s' ",
dbesc(protect_sprintf('%' . $verb . '%'))
);
}
}
if (strlen($file)) {
$sql_extra .= term_query('item', $file, TERM_FILE);
}
if ($dm) {
$sql_extra .= " and item_private = 2 ";
}
if ($conv) {
$item_thread_top = '';
if ($nouveau) {
$sql_extra .= " AND author_xchan = '" . dbesc($channel['channel_hash']) . "' ";
} else {
$sql_extra .= sprintf(
" AND parent IN (SELECT distinct(parent) from item where ( author_xchan = '%s' or item_mentionsme = 1 ) and item_deleted = 0 ) ",
dbesc(protect_sprintf($channel['channel_hash']))
);
}
}
if ($this->updating && !$this->loading) {
// only setup pagination on initial page view
$pager_sql = '';
} else {
$itemspage = get_pconfig(local_channel(), 'system', 'itemspage');
App::set_pager_itemspage(((intval($itemspage)) ? $itemspage : 20));
$pager_sql = sprintf(" LIMIT %d OFFSET %d ", intval(App::$pager['itemspage']), intval(App::$pager['start']));
}
// cmin and cmax are both -1 when the affinity tool is disabled
if (($cmin != (-1)) || ($cmax != (-1))) {
// Not everybody who shows up in the network stream will be in your address book.
// By default, those that aren't are assumed to have closeness = 99; but this isn't
// recorded anywhere. So if cmax is 99, we'll open the search up to anybody in
// the stream with a NULL address book entry.
$sql_nets .= " AND ";
if ($cmax == 99) {
$sql_nets .= " ( ";
}
$sql_nets .= "( abook.abook_closeness >= " . intval($cmin) . " ";
$sql_nets .= " AND abook.abook_closeness <= " . intval($cmax) . " ) ";
if ($cmax == 99) {
$sql_nets .= " OR abook.abook_closeness IS NULL ) ";
}
}
$net_query = (($net) ? " left join xchan on xchan_hash = author_xchan " : '');
$net_query2 = (($net) ? " and xchan_network = '" . protect_sprintf(dbesc($net)) . "' " : '');
$abook_uids = " and abook.abook_channel = " . local_channel() . " ";
$uids = " and item.uid = " . local_channel() . " ";
if (get_pconfig(local_channel(), 'system', 'stream_list_mode')) {
$page_mode = 'list';
} else {
$page_mode = 'client';
}
$simple_update = (($this->updating) ? " and item.changed > '" . $_SESSION['loadtime_stream'] . "' " : '');
$parents_str = '';
$update_unseen = '';
$items = [];
if ($this->loading) {
$simple_update = '';
}
if ($static && $simple_update) {
$simple_update .= " and item_thread_top = 0 and author_xchan = '" . protect_sprintf(get_observer_hash()) . "' ";
}
// we are not yet using this in updates because the content may have just been marked seen
// and this might prevent us from loading the update. Will need to test further.
$seenstr = EMPTY_STR;
if (local_channel()) {
$seen = $_SESSION['seen_items'];
if ($seen) {
$seenstr = " and not item.id in (" . implode(',', $seen) . ") ";
}
}
if ($nouveau && $this->loading) {
// "New Item View" - show all items unthreaded in reverse date order
$items = q("SELECT item.*, item.id AS item_id, created FROM item
left join abook on ( item.owner_xchan = abook.abook_xchan $abook_uids )
$net_query
WHERE true $uids $item_normal
and (abook.abook_blocked = 0 or abook.abook_flags is null)
$simple_update
$sql_extra $sql_options $sql_nets
$net_query2
ORDER BY item.edited DESC $pager_sql ");
xchan_query($items);
$items = fetch_post_tags($items);
} elseif ($this->updating) {
// Normal conversation view
if ($order === 'post') {
$ordering = 'created';
} elseif ($order === 'received') {
$ordering = 'changed';
} elseif ($distance) {
$ordering = 'distance asc, commented';
$sql_extra .= " and (lat != 0 or lon != 0) ";
} else {
$ordering = 'commented';
}
$null_distance = ($distance) ? " AND lat != 0.0 AND lon != 0.0 " : "";
$base_query = ($distance)
? "SELECT item.parent AS item_id,
(6371 * acos(cos(radians(lat) )
* cos( radians( $distance_lat ) )
* cos( radians( $distance_lon ) - radians(lon) )
+ sin( radians(lat) )
* sin( radians( $distance_lat ) )
)) as distance from item"
: "SELECT item.parent AS item_id FROM item";
if ($this->loading) {
// Fetch a page full of parent items for this page
$r = q("$base_query
left join abook on ( item.owner_xchan = abook.abook_xchan $abook_uids )
$net_query
WHERE true $uids $item_thread_top $item_normal $null_distance
AND item.mid = item.parent_mid
and (abook.abook_blocked = 0 or abook.abook_flags is null)
$sql_extra3 $sql_extra $sql_options $sql_nets
$net_query2
ORDER BY $ordering DESC $pager_sql ");
} else {
// this is an update
$r = q("$base_query
left join abook on ( item.owner_xchan = abook.abook_xchan $abook_uids )
$net_query
WHERE true $uids $item_normal_update $simple_update $null_distance
and (abook.abook_blocked = 0 or abook.abook_flags is null)
$sql_extra3 $sql_extra $sql_options $sql_nets $net_query2");
}
if ($r) {
$parents_str = ids_to_querystr($r, 'item_id');
$items = q(
"SELECT item.*, item.id AS item_id FROM item
WHERE true $uids $item_normal
AND item.parent IN ( %s )
$sql_extra ",
dbesc($parents_str ?: '0')
);
if ($distance) {
foreach ($r as $parent) {
for($cnt = 0; $cnt < count($items); $cnt ++) {
if ($parent['item_id'] === $items[$cnt]['id']) {
$items[$cnt]['distance'] = $parent['distance'];
}
}
}
}
xchan_query($items, true);
$items = fetch_post_tags($items);
$items = conv_sort($items, $ordering);
}
if ($page_mode === 'list') {
/**
* in "list mode", only mark the parent item and any like activities as "seen".
* We won't distinguish between comment likes and post likes. The important thing
* is that the number of unseen comments will be accurate. The SQL to separate the
* comment likes could also get somewhat hairy.
*/
if ($parents_str) {
$update_unseen = " AND ( id IN ( " . dbesc($parents_str) . " )";
$update_unseen .= " OR ( parent IN ( " . dbesc($parents_str) . " ) AND verb in ( '" . dbesc(ACTIVITY_LIKE) . "','" . dbesc(ACTIVITY_DISLIKE) . "' ))) ";
}
} else {
if ($parents_str) {
$update_unseen = " AND parent IN ( " . dbesc($parents_str) . " )";
}
}
}
if ($update_unseen && empty($_SESSION['sudo'])) {
$x = ['channel_id' => local_channel(), 'update' => 'unset'];
Hook::call('update_unseen', $x);
if ($x['update'] === 'unset' || intval($x['update'])) {
q("UPDATE item SET item_unseen = 0 WHERE item_unseen = 1 AND uid = %d $update_unseen ",
intval(local_channel())
);
}
$seen = $_SESSION['seen_items'];
if (!$seen) {
$seen = [];
}
$ids = ids_to_array($items, 'item_id');
$seen = array_values(array_unique(array_merge($ids, $seen)));
$_SESSION['seen_items'] = $seen;
PConfig::Set(local_channel(), 'system', 'seen_items', $seen);
}
$mode = (($nouveau) ? 'stream-new' : 'stream');
if ($search) {
$mode = 'search';
}
$o .= conversation($items, $mode, $this->updating, $page_mode);
if (($items) && (!$this->updating)) {
$o .= alt_pager(count($items));
}
return $o;
}
}