/**
* Get the value of a header.
*
* @param string $name The name of a header
* @return string The value of the header. If it does not exist, returns `null'.
* @access public
*/
function head($name)
{
ESTRAIERPURE_DEBUG && EstraierPure_Utility::check_types(array($name, 'string'));
return isset($this->heads[$name]) ? $this->heads[$name] : null;
}
/**
* Search for documents corresponding a condition.
*
* @param object $cond EstraierPure_Condition
* which is a condition object.
* @param int $depth The depth of meta search.
* @return object EstraierPure_NodeResult
* A node result object.
* On error, returns `null'.
* @access public
*/
function &search(&$cond, $depth)
{
ESTRAIERPURE_DEBUG && EstraierPure_Utility::check_types(array($cond, 'object', 'EstraierPure_Condition'), array($depth, 'integer'));
$this->status = -1;
if (!$this->url) {
$null = null;
return $null;
}
$turl = $this->url . '/search';
$reqheads = array('content-type' => 'application/x-www-form-urlencoded');
if ($this->auth) {
$reqheads['authorization'] = 'Basic ' . base64_encode($this->auth);
}
$reqbody = EstraierPure_Utility::cond_to_query($cond, $depth, $this->wwidth, $this->hwidth, $this->awidth);
$res =& EstraierPure_Utility::shuttle_url($turl, $this->pxhost, $this->pxport, $this->timeout, $reqheads, $reqbody);
if (!$res) {
return null;
}
$this->status = $res->status();
if ($res->is_error()) {
return null;
}
$lines = explode("\n", $res->body());
if (count($lines) == 0) {
return null;
}
$docs = array();
$hints = array();
$border = $lines[0];
$isend = false;
$lnum = 1;
$llen = count($lines);
$blen = strlen($border);
while ($lnum < $llen) {
$line = $lines[$lnum];
$lnum++;
if (strlen($line) >= $blen && strpos($line, $border) === 0) {
if (substr($line, $blen) == ':END') {
$isend = true;
}
break;
}
if (strpos($line, "\t")) {
list($key, $value) = explode("\t", $line, 2);
$hints[$key] = $value;
}
}
$snum = $lnum;
while (!$isend && $lnum < $llen) {
$line = $lines[$lnum];
$lnum++;
if (strlen($line) >= $blen && strpos($line, $border) === 0) {
if ($lnum > $snum) {
$rdattrs = array();
$sb = '';
$rdvector = '';
$rlnum = $snum;
while ($rlnum < $lnum - 1) {
$rdline = trim($lines[$rlnum]);
$rlnum++;
if (strlen($rdline) == 0) {
break;
}
if (substr($rdline, 0, 1) == '%') {
$lidx = strpos($rdline, "\t");
if (strpos($rdline, '%VECTOR') === 0 && $lidx) {
$rdvector = substr($rdline, $lidx + 1);
}
} else {
if (strpos($rdline, '=')) {
list($key, $value) = explode('=', $rdline, 2);
$rdattrs[$key] = $value;
}
}
}
while ($rlnum < $lnum - 1) {
$rdline = $lines[$rlnum];
$rlnum++;
$sb .= $rdline . "\n";
}
$rduri = $rdattrs['@uri'];
$rdsnippet = $sb;
if ($rduri) {
$docs[] =& new EstraierPure_ResultDocument($rduri, $rdattrs, $rdsnippet, $rdvector);
}
}
$snum = $lnum;
if (substr($line, $blen) == ':END') {
$isend = true;
}
}
}
if (!$isend) {
$null = null;
return $null;
}
$result =& new EstraierPure_NodeResult($docs, $hints);
return $result;
}
