/**
* Private search method
*
* @param string $mailbox Mailbox name
* @param string $criteria Search criteria
* @param string $charset Charset
* @param string $sort_field Sorting field
* @return array search results as list of message ids
* @access private
* @see rcube_imap::search()
*/
private function _search_index($mailbox, $criteria = 'ALL', $charset = NULL, $sort_field = NULL)
{
$orig_criteria = $criteria;
if ($this->skip_deleted && !preg_match('/UNDELETED/', $criteria)) {
$criteria = 'UNDELETED ' . $criteria;
}
if ($this->threading) {
$a_messages = $this->conn->thread($mailbox, $this->threading, $criteria, $charset);
// Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
// but I've seen that Courier doesn't support UTF-8)
if ($a_messages === false && $charset && $charset != 'US-ASCII') {
$a_messages = $this->conn->thread($mailbox, $this->threading, $this->convert_criteria($criteria, $charset), 'US-ASCII');
}
if ($a_messages !== false) {
list($thread_tree, $msg_depth, $has_children) = $a_messages;
$a_messages = array('tree' => $thread_tree, 'depth' => $msg_depth, 'children' => $has_children);
}
return $a_messages;
}
if ($sort_field && $this->get_capability('SORT')) {
$charset = $charset ? $charset : $this->default_charset;
$a_messages = $this->conn->sort($mailbox, $sort_field, $criteria, false, $charset);
// Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
// but I've seen that Courier doesn't support UTF-8)
if ($a_messages === false && $charset && $charset != 'US-ASCII') {
$a_messages = $this->conn->sort($mailbox, $sort_field, $this->convert_criteria($criteria, $charset), false, 'US-ASCII');
}
if ($a_messages !== false) {
$this->search_sorted = true;
return $a_messages;
}
}
if ($orig_criteria == 'ALL') {
$max = $this->_messagecount($mailbox);
$a_messages = $max ? range(1, $max) : array();
} else {
$a_messages = $this->conn->search($mailbox, ($charset ? "CHARSET {$charset} " : '') . $criteria);
// Error, try with US-ASCII (some servers may support only US-ASCII)
if ($a_messages === false && $charset && $charset != 'US-ASCII') {
$a_messages = $this->conn->search($mailbox, 'CHARSET US-ASCII ' . $this->convert_criteria($criteria, $charset));
}
// I didn't found that SEARCH should return sorted IDs
if (is_array($a_messages) && !$this->sort_field) {
sort($a_messages);
}
}
$this->search_sorted = false;
return $a_messages;
}
/**
* protected search method
*
* @param string $folder Folder name
* @param string $criteria Search criteria
* @param string $charset Charset
* @param string $sort_field Sorting field
*
* @return rcube_result_index|rcube_result_thread Search results (UIDs)
* @see rcube_imap::search()
*/
protected function search_index($folder, $criteria = 'ALL', $charset = NULL, $sort_field = NULL)
{
$orig_criteria = $criteria;
if (!$this->check_connection()) {
if ($this->threading) {
return new rcube_result_thread();
} else {
return new rcube_result_index();
}
}
if ($this->options['skip_deleted'] && !preg_match('/UNDELETED/', $criteria)) {
$criteria = 'UNDELETED ' . $criteria;
}
// unset CHARSET if criteria string is ASCII, this way
// SEARCH won't be re-sent after "unsupported charset" response
if ($charset && $charset != 'US-ASCII' && is_ascii($criteria)) {
$charset = 'US-ASCII';
}
if ($this->threading) {
$threads = $this->conn->thread($folder, $this->threading, $criteria, true, $charset);
// Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
// but I've seen that Courier doesn't support UTF-8)
if ($threads->is_error() && $charset && $charset != 'US-ASCII') {
$threads = $this->conn->thread($folder, $this->threading, $this->convert_criteria($criteria, $charset), true, 'US-ASCII');
}
return $threads;
}
if ($sort_field && $this->get_capability('SORT')) {
$charset = $charset ? $charset : $this->default_charset;
$messages = $this->conn->sort($folder, $sort_field, $criteria, true, $charset);
// Error, try with US-ASCII (RFC5256: SORT/THREAD must support US-ASCII and UTF-8,
// but I've seen Courier with disabled UTF-8 support)
if ($messages->is_error() && $charset && $charset != 'US-ASCII') {
$messages = $this->conn->sort($folder, $sort_field, $this->convert_criteria($criteria, $charset), true, 'US-ASCII');
}
if (!$messages->is_error()) {
$this->search_sorted = true;
return $messages;
}
}
$messages = $this->conn->search($folder, ($charset && $charset != 'US-ASCII' ? "CHARSET {$charset} " : '') . $criteria, true);
// Error, try with US-ASCII (some servers may support only US-ASCII)
if ($messages->is_error() && $charset && $charset != 'US-ASCII') {
$messages = $this->conn->search($folder, $this->convert_criteria($criteria, $charset), true);
}
$this->search_sorted = false;
return $messages;
}
