/**
* 显示文章信息
*/
public function detail()
{
if (!empty($_GET['url'])) {
$start = strrpos($_GET['url'], '/');
if (false === $start) {
$start = -1;
}
if (false === strpos($_GET['url'], '.html')) {
$str = substr($_GET['url'], $start + 1);
} else {
$str = substr($_GET['url'], $start + 1, -5);
}
$_GET['id'] = $id = UMath::idDecrypt($str);
}
if (empty($_GET['id']) || !ctype_digit($_GET['id'])) {
$this->header404();
exit;
} else {
$id = $_GET['id'];
}
$mo = new Model_Article();
if (!$detail) {
$this->header404();
exit;
}
// 有跳转链接，直接跳转到目标网址
if ($detail['redirect']) {
header('Location:' . $detail['redirect']);
exit;
}
if ($detail['html_file']) {
if (!empty($_GET['make_html']) && is_file($htmlFile = $mo->getHtmlFile($id, $detail['html_file']))) {
$htmlUrl = str_replace(WEB_PATH, '/', $htmlFile);
header('Location:' . $htmlUrl);
exit;
} else {
$_GET['make_html'] = true;
}
} else {
$_GET['make_html'] = true;
$detail['html_file'] = UMath::idCrypt($id);
$data = array('id' => $id, 'html_file' => $detail['html_file']);
$mo->save($data);
}
$this->detail = $detail;
$_GET['make_html'] = true;
$_GET['html_display'] = false;
$_GET['html_file'] = $mo->getHtmlFile($id, $detail['html_file']);
$htmlUrl = str_replace(WEB_PATH, '/', $_GET['html_file']);
$this->display();
header('Location:' . $htmlUrl);
return false;
}
/**
* 解密一个字符串为ID数字
* @param string $str
* @return string
*/
public static function idDeCrypt($str)
{
$key = self::idCryptKey();
$keyLen = strlen($key);
$id = '';
$strLen = strlen($str);
if ($keyLen < $strLen) {
$key .= substr($key, 0, $strLen - $keyLen + 1);
}
$ki = 0;
if ($GLOBALS['_id_crypt_slice_pos']) {
$pos = $GLOBALS['_id_crypt_slice_pos'];
$idLen = UMath::any2dec(substr($str, $pos, 1));
$str = substr($str, $pos + 1) . substr($str, 0, $pos);
} else {
$pos = floor((strlen($str) - 1) / 2);
$idLen = UMath::any2dec(substr($str, $pos, 1));
$str = substr($str, 0, $pos) . substr($str, $pos + 1);
}
for ($i = 0; $i < $strLen; $i++, $ki++) {
$val = UMath::any2dec($str[$i]);
$kVal = UMath::any2dec($key[$ki]);
if ($val < $kVal) {
if (isset($str[$i + 1])) {
$val = UMath::any2dec($str[$i] . $str[$i + 1]);
} else {
$val = UMath::any2dec($str[$i]);
}
$i++;
}
$tmp = $val - $kVal;
if (strlen($id) == $idLen) {
break;
}
$id .= $tmp;
}
return $id;
}
