function ewiki_powersearch($q, $where = 'content')
{
$q = ewiki_lowercase(preg_replace('/\\s*[\\000-\\040]+\\s*/', ' ', $q));
$found = array();
$scored = array();
#-- initial scan
foreach (explode(" ", $q) as $search) {
if (empty($search)) {
continue;
}
$result = ewiki_db::SEARCH($where, $search);
while ($row = $result->get()) {
if (($row["flags"] & EWIKI_DB_F_TYPE) == EWIKI_DB_F_TEXT) {
$id = $row["id"];
$content = strtolower($row[$where]);
unset($row);
#-- have a closer look
$len1 = strlen($content) + 1;
if (!isset($scored[$id])) {
$scored[$id] = 1;
}
$scored[$id] += 800 * (strlen($search) / $len1);
$scored[$id] += 65 * (count(explode($search, $content)) - 2);
$p = -1;
while (($p = strpos($content, $search, $p + 1)) !== false) {
$scored[$id] += 80 * (1 - $p / $len1);
}
}
#if-TXT
}
}
#-- output results
arsort($scored);
$o = "<ol>\n";
$n = 0;
foreach ($scored as $id => $score) {
#-- refetch page for top 10 entries (still cached by OS or DB)
$row = $n < 10 ? ewiki_db::GET($id) : NULL;
#-- check access rights in protected mode
if (EWIKI_PROTECTED_MODE && !ewiki_auth($id, $row, "view", $ring = false, $force = 0)) {
if (EWIKI_PROTECTED_MODE_HIDING) {
continue;
} else {
$row["content"] = ewiki_t("FORBIDDEN");
}
}
$o .= "<li>\n";
$o .= '<div class="search-result ' . ($oe ^= 1 ? "odd" : "even") . '">' . '<a href="' . ewiki_script("", $id) . '">' . $id . "</a> " . "\n";
#-- top 10 results are printed more verbosely
if ($n++ < 10) {
preg_match_all('/([_-\\w]+)/', $row["content"], $uu);
$text = htmlentities(substr(implode(" ", $uu[1]), 0, 200));
$o .= "<br />\n<small>{$text}\n" . "<br />" . strftime(ewiki_t("LASTCHANGED"), $row["lastmodified"]) . "<br /><br /></small>\n";
}
$o .= "</div>\n";
$o .= "</li>\n";
}
$o .= "</ol>\n";
return $o;
}
function ewiki_edit_lock($id, &$data, $action)
{
$keep = 500;
// in seconds
$o = "";
#-- lock dir
if (!file_exists($dir = EWIKI_TMP . "/edit.d/")) {
mkdir($dir);
}
#-- check file
$lockfile = $dir . ewiki_lowercase($id) . ".lock";
$time = 0;
if (file_exists($lockfile)) {
$time = filemtime($lockfile);
}
#-- force
if ($_REQUEST["edit_unlock"]) {
unlink($lockfile);
$time = -1;
} elseif ($_SERVER["REQUEST_METHOD"] == "POST") {
@unlink($lockfile);
} else {
if ($time + $keep > time()) {
$o = ewiki_t("<p class=\"system-message\"><b>_{Warning}</b>:" . " _{This page is currently being edited by someone else}," . " _{and therefore locked currently}." . " " . '<form action="' . $_SERVER[REQUEST_URI] . '" method="POST">' . '<input type="id" name="' . "{$action}/{$id}" . '">' . '<input type="submit" name="edit_unlock" value="_{unlock}">' . '</form>' . "</p>\n");
} elseif ($time) {
// unlink($lockfile);
touch($lockfile);
} else {
touch($lockfile);
}
}
return $o;
}
function ewiki_edit_warn(&$o, $id, &$data, $action)
{
$keep = 420;
// in seconds
if (!file_exists($dir = EWIKI_TMP . "/edit.d/")) {
mkdir($dir);
}
$lockfile = $dir . ewiki_lowercase($id) . ".lock";
$time = 0;
if (file_exists($lockfile)) {
$time = filemtime($lockfile);
}
if ($_SERVER["REQUEST_METHOD"] == "POST") {
@unlink($lockfile);
} elseif ($time + $keep > time()) {
$o = ewiki_t("<p class=\"system-message\"><b>_{Warning}</b>:" . " _{This page is currently being edited by someone else}." . " _{If you start editing now, your changes may get lost}." . "</p>\n") . $o;
} elseif ($time) {
// unlink($lockfile);
touch($lockfile);
} else {
touch($lockfile);
}
}
function CACHE_ADD($id, $version)
{
$CACHE = $this->dir . "/CACHE";
if ($version >= 1 && ($f = fopen($CACHE, "ab"))) {
flock($f, LOCK_EX);
fwrite($f, ewiki_lowercase($id) . "\n");
flock($f, LOCK_UN);
fclose($f);
}
}
function FN($id)
{
$id = ewiki_lowercase($id);
return rawurlencode($id);
}
