/** If the parameter ec3_xml is set, then brutally hijack the page and replace
* it with XML calendar data. This is used by XmlHttpRequests from the
* active calendar JavaScript. */
function ec3_filter_query_vars_xml()
{
$components = explode('_', $_GET['ec3_xml']);
if (count($components) == 2) {
$date = new ec3_Date($components[0], $components[1]);
$end = $date->next_month();
$calendar_days = ec3_util_calendar_days($date->month_id(), $end->month_id());
@header('Content-type: text/xml');
echo '<?xml version="1.0" encoding="' . get_settings('blog_charset') . '" standalone="yes"?>';
echo "<calendar><month id='" . $date->month_id() . "'>\n";
foreach ($calendar_days as $day_id => $day) {
if ('today' == $day_id) {
$dc = explode('_', ec3_strftime(":_%Y_%m_%d"));
} else {
$dc = explode('_', $day_id);
}
if (count($dc) == 4) {
$date->day_num = $dc[3];
$titles = $day->get_titles();
echo "<day id='{$day_id}' is_event='{$day->is_event}'" . " titles='{$titles}' link='" . $date->day_link() . "'/>\n";
}
}
echo "</month></calendar>\n";
exit(0);
}
}
/** Rewrite date restrictions if the query is day- or category- specific. */
function ec3_filter_posts_where($where)
{
global $ec3, $wpdb;
if ($ec3->query->is_page || $ec3->query->is_single || $ec3->query->is_admin) {
return $where;
}
$listing = ec3_get_listing();
if ($listing == 'D') {
// disable event calendar's query filtering.
return $where;
} elseif ($listing == 'P') {
// posts-only
// Hide all events (same as last branch)
$where .= " AND ec3_sch.post_id IS NULL ";
$ec3->join_ec3_sch = true;
} elseif ($ec3->query->is_date) {
// Transfer events' 'post_date' restrictions to 'start'
$df = 'YEAR|MONTH|DAYOFMONTH|HOUR|MINUTE|SECOND|WEEK';
// date fields
$re = "/ AND (({$df})\\({$wpdb->posts}\\.post_date(,[^\\)]+)?\\) *= *('[^']+'|\\d+\\b))/i";
if (preg_match_all($re, $where, $matches)) {
$where_post_date = implode(' AND ', $matches[1]);
// rdate/rtime should be between start..end:
$year_num = intval(date('Y'));
$sdateobj = new ec3_Date($year_num, 1, 1);
$edateobj = new ec3_Date($year_num, 12, 0);
$stime = array('00', '00', '00');
$etime = array('23', '59', '59');
for ($i = 0; $i < count($matches[1]); $i++) {
$num = intval(str_replace("'", '', $matches[4][$i]));
if ('YEAR' == $matches[2][$i]) {
$sdateobj->year_num = $edateobj->year_num = $num;
} elseif ('MONTH' == $matches[2][$i]) {
$sdateobj->month_num = $edateobj->month_num = $num;
} elseif ('DAYOFMONTH' == $matches[2][$i]) {
$sdateobj->day_num = $edateobj->day_num = $num;
} elseif ('HOUR' == $matches[2][$i]) {
$stime[0] = $etime[0] = zeroise($num, 2);
} elseif ('MINUTE' == $matches[2][$i]) {
$stime[1] = $etime[1] = zeroise($num, 2);
} elseif ('SECOND' == $matches[2][$i]) {
$stime[2] = $etime[2] = zeroise($num, 2);
}
}
// If the end day num has not been set, then choose the month's last day.
if ($edateobj->day_num < 1) {
$edateobj->day_num = 1;
$edateobj->day_num = $edateobj->days_in_month();
}
$where_start = sprintf("start<='%1\$s' AND end>='%2\$s'", $edateobj->to_mysqldate() . ' ' . implode(':', $etime), $sdateobj->to_mysqldate() . ' ' . implode(':', $stime));
$where = preg_replace($re, '', $where);
if ($listing == 'E') {
// EVENTS only
$where .= " AND ({$where_start}) ";
} else {
// ALL
$is_post = 'ec3_sch.post_id IS NULL';
$where .= " AND (({$where_post_date} AND {$is_post}) OR " . "({$where_start} AND NOT {$is_post})) ";
}
$ec3->order_by_start = true;
$ec3->join_ec3_sch = true;
}
$ec3->order_by_start = true;
$ec3->join_ec3_sch = true;
} elseif ($ec3->is_date_range) {
$w = array();
if (!empty($ec3->range_from)) {
$w[] = '%2$s' . ">='{$ec3->range_from}'";
}
if (!empty($ec3->range_before)) {
$w[] = '%1$s' . "<='{$ec3->range_before}'";
}
if (!empty($w)) {
$ws = implode(' AND ', $w);
$where_start = sprintf($ws, 'ec3_sch.start', 'ec3_sch.end');
if ($listing == 'E') {
// EVENTS only
$where .= " AND ({$where_start}) ";
} else {
// ALL
$pd = "{$wpdb->posts}.post_date";
$where_post_date = sprintf($ws, $pd, $pd);
$is_post = 'ec3_sch.post_id IS NULL';
$where .= " AND (({$where_post_date} AND {$is_post}) OR " . "({$where_start} AND NOT {$is_post})) ";
}
$ec3->order_by_start = true;
$ec3->join_ec3_sch = true;
}
} elseif ($ec3->advanced) {
if ($listing == 'E') {
// EVENTS only
// Hide inactive events
$where .= " AND ec3_sch.post_id IS NOT NULL ";
$ec3->join_ec3_sch = true;
$ec3->join_only_active_events = true;
$ec3->order_by_start = true;
global $wp;
$wp->did_permalink = false;
// Allows zero results without -> 404
} elseif ($ec3->query->is_search) {
$where .= ' AND (ec3_sch.post_id IS NULL OR ' . "ec3_sch.end>='{$ec3->today}')";
$ec3->join_ec3_sch = true;
} else {
// Hide all events
$where .= " AND ec3_sch.post_id IS NULL ";
$ec3->join_ec3_sch = true;
}
}
return $where;
}
