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<?php
require($ADEI_ROOTDIR . "/classes/searchengine.php");
require($ADEI_ROOTDIR . "/classes/searchfilter.php");
require($ADEI_ROOTDIR . "/classes/searchresults.php");
class SEARCH {
var $req;
var $engines;
var $modules;
const EXACT_MATCH = 1;
const WORD_MATCH = 2;
const FUZZY_MATCH = 3;
const REGEX_MATCH = 4;
function __construct(REQUEST $req = NULL) {
global $ADEI;
global $SEARCH_ENGINES;
if ($req) $this->req = $req;
else $this->req = new REQUEST();
$this->modules = array();
$this->engines = array();
foreach ($SEARCH_ENGINES as $cl => &$opts) {
try {
$ADEI->RequireClass("search/$cl", true);
} catch (ADEIException $ae) {
throw new ADEIException(translate("Unsupported search engine is configured: \"%s\"", $cl));
}
$engine = new $cl($req, $opts);
$modules = $engine->GetModules();
foreach ($modules as $module) {
if (isset($this->modules[$module])) {
throw new ADEIException(translate("SEARCH engines are conflicting. Module (%s) is provided by two different engines: \"" . get_class($this->modules[$module]) . "\" and \"$cl\""));
}
$this->modules[$module] = $engine;
}
$this->engines[$cl] = $engine;
}
}
function DetectModules($string) {
foreach ($this->engines as $engine) {
$res = $engine->DetectModules($string);
if ($res !== false) return $res;
}
return false;
}
function Search($string = false, $modules = false, $threshold = false, $limits = false, $opts = false) {
if ($string === false) $string = $this->req->props['search'];
if (preg_match("/^\s*{([^}]*)}\s*(.*)$/", $string, $m)) {
$modules = $m[1];
$string = $m[2];
}
if (!$opts) $opts = array();
if (preg_match("/^\s*\\[([^\\]]*)\\]\s*(.*)$/", $string, $m)) {
$opts_string = $m[1];
if (stripos($opts_string, "=") !== false) {
$opts['match'] = SEARCH::EXACT_MATCH;
} else if (stripos($opts_string, "w") !== false) {
$opts['match'] = SEARCH::WORD_MATCH;
} else if (stripos($opts_string, "~") !== false) {
$opts['match'] = SEARCH::FUZZY_MATCH;
}
}
if (($threshold === false)&&(isset($this->req->props['search_threshold']))) {
$threshold = $this->req->props['search_threshold'];
}
if (($modules === false)&&($this->req->props['search_modules'])) {
$modules = $this->req->props['search_modules'];
} else {
// try detection
}
// Extracting limits part
if (!is_array($limits)) $limits = array();
$parts = preg_split("/:/", $string);
if (sizeof($parts) > 1) {
if (!preg_match("/^(.*)\s*(\b[\w\d_]+)$/", $parts[0], $matches)) {
throw new ADEIException(translate("Invalid search string %s", $string));
}
$key = $matches[2];
for ($i = 1; $i < sizeof($parts) - 1; $i++) {
if (!preg_match("/^(.*)\s*(\b[\w\d_]+)$/", $parts[$i], $m)) {
throw new ADEIException(translate("Invalid search string %s", $string));
}
$limits[$key] = $m[1];
$key = $m[2];
}
$limits[$key] = $parts[$i];
$string = $matches[1];
}
$filter = new SEARCHFilter($threshold, $limits);
// extracting module information
if (($modules)&&(is_string($modules))) {
if (strpos($modules, "{") === false) {
$mstr = explode(",", $modules);
$modules = array();
foreach ($mstr as $mod) {
if (preg_match("/^([\w\d_]+)(\((.*)\))?$/", $mod, $m)) {
$module = $m[1];
$modules[$module] = array();
if ($m[2]) {
$params = explode(";", $m[3]);
foreach ($params as $param) {
if (preg_match("/^([^=]+)=(.*)$/", $param, $m)) {
$modules[$module][$m[1]] = $m[2];
} else {
$modules[$module][$param] = true;
}
}
}
}
}
} else {
$modules = json_decode($modules);
}
}
if (!$modules) $modules = $this->DetectModules($string);
$result = new SEARCHResults();
if ($modules) {
foreach ($modules as $module => $opts) {
if (isset($this->modules[$module])) {
$modres = $this->modules[$module]->Search($string, $module, $filter, $opts);
if ($modres) $result->Combine($modres);
} else {
throw new ADEIException(translate("The requested search module (%s) is not provided by any of search engines", $module));
}
}
} else {
// Detect what is needed
foreach ($this->engines as $engine) {
$modres = $engine->EngineSearch($string, $filter, $opts);
if ($modres) $result->Combine($modres);
}
}
if ($result->HaveResults()) {
return $result;
}
return false;
}
}
?>
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