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<?php
/**
* COPS (Calibre OPDS PHP Server) class file
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Sébastien Lucas <sebastien@slucas.fr>
*/
abstract class Base
{
const PAGE_INDEX = "index";
const PAGE_ALL_AUTHORS = "1";
const PAGE_AUTHORS_FIRST_LETTER = "2";
const PAGE_AUTHOR_DETAIL = "3";
const PAGE_ALL_BOOKS = "4";
const PAGE_ALL_BOOKS_LETTER = "5";
const PAGE_ALL_SERIES = "6";
const PAGE_SERIE_DETAIL = "7";
const PAGE_OPENSEARCH = "8";
const PAGE_OPENSEARCH_QUERY = "9";
const PAGE_ALL_RECENT_BOOKS = "10";
const PAGE_ALL_TAGS = "11";
const PAGE_TAG_DETAIL = "12";
const PAGE_BOOK_DETAIL = "13";
const PAGE_ALL_CUSTOMS = "14";
const PAGE_CUSTOM_DETAIL = "15";
const PAGE_ABOUT = "16";
const PAGE_ALL_LANGUAGES = "17";
const PAGE_LANGUAGE_DETAIL = "18";
const PAGE_CUSTOMIZE = "19";
const PAGE_ALL_PUBLISHERS = "20";
const PAGE_PUBLISHER_DETAIL = "21";
const PAGE_ALL_RATINGS = "22";
const PAGE_RATING_DETAIL = "23";
const COMPATIBILITY_XML_ALDIKO = "aldiko";
private static $db = NULL;
public static function isMultipleDatabaseEnabled () {
global $config;
return is_array ($config['calibre_directory']);
}
public static function useAbsolutePath () {
global $config;
$path = self::getDbDirectory();
return preg_match ('/^\//', $path) || // Linux /
preg_match ('/^\w\:/', $path); // Windows X:
}
public static function noDatabaseSelected () {
return self::isMultipleDatabaseEnabled () && is_null (GetUrlParam (DB));
}
public static function getDbList () {
global $config;
if (self::isMultipleDatabaseEnabled ()) {
return $config['calibre_directory'];
} else {
return array ("" => $config['calibre_directory']);
}
}
public static function getDbNameList () {
global $config;
if (self::isMultipleDatabaseEnabled ()) {
return array_keys ($config['calibre_directory']);
} else {
return array ("");
}
}
public static function getDbName ($database = NULL) {
global $config;
if (self::isMultipleDatabaseEnabled ()) {
if (is_null ($database)) $database = GetUrlParam (DB, 0);
if (!is_null($database) && !preg_match('/^\d+$/', $database)) {
self::error ($database);
}
$array = array_keys ($config['calibre_directory']);
return $array[$database];
}
return "";
}
public static function getDbDirectory ($database = NULL) {
global $config;
if (self::isMultipleDatabaseEnabled ()) {
if (is_null ($database)) $database = GetUrlParam (DB, 0);
if (!is_null($database) && !preg_match('/^\d+$/', $database)) {
self::error ($database);
}
$array = array_values ($config['calibre_directory']);
return $array[$database];
}
return $config['calibre_directory'];
}
public static function getDbFileName ($database = NULL) {
return self::getDbDirectory ($database) .'metadata.db';
}
private static function error ($database) {
if (php_sapi_name() != "cli") {
header("location: checkconfig.php?err=1");
}
throw new Exception("Database <{$database}> not found.");
}
public static function getDb ($database = NULL) {
if (is_null (self::$db)) {
try {
if (is_readable (self::getDbFileName ($database))) {
self::$db = new PDO('sqlite:'. self::getDbFileName ($database));
if (useNormAndUp ()) {
self::$db->sqliteCreateFunction ('normAndUp', 'normAndUp', 1);
}
} else {
self::error ($database);
}
} catch (Exception $e) {
self::error ($database);
}
}
return self::$db;
}
public static function checkDatabaseAvailability () {
if (self::noDatabaseSelected ()) {
for ($i = 0; $i < count (self::getDbList ()); $i++) {
self::getDb ($i);
self::clearDb ();
}
} else {
self::getDb ();
}
return true;
}
public static function clearDb () {
self::$db = NULL;
}
public static function executeQuerySingle ($query, $database = NULL) {
return self::getDb ($database)->query($query)->fetchColumn();
}
public static function getCountGeneric($table, $id, $pageId, $numberOfString = NULL) {
if (!$numberOfString) {
$numberOfString = $table . ".alphabetical";
}
$count = self::executeQuerySingle ('select count(*) from ' . $table);
if ($count == 0) return NULL;
$entry = new Entry (localize($table . ".title"), $id,
str_format (localize($numberOfString, $count), $count), "text",
array ( new LinkNavigation ("?page=".$pageId)), "", $count);
return $entry;
}
public static function getEntryArrayWithBookNumber ($query, $columns, $params, $category) {
/* @var $result PDOStatement */
list (, $result) = self::executeQuery ($query, $columns, "", $params, -1);
$entryArray = array();
while ($post = $result->fetchObject ())
{
/* @var $instance Author|Tag|Serie|Publisher */
$instance = new $category ($post);
if (property_exists($post, "sort")) {
$title = $post->sort;
} else {
$title = $post->name;
}
array_push ($entryArray, new Entry ($title, $instance->getEntryId (),
str_format (localize("bookword", $post->count), $post->count), "text",
array ( new LinkNavigation ($instance->getUri ())), "", $post->count));
}
return $entryArray;
}
public static function executeQuery($query, $columns, $filter, $params, $n, $database = NULL, $numberPerPage = NULL) {
$totalResult = -1;
if (useNormAndUp ()) {
$query = preg_replace("/upper/", "normAndUp", $query);
$columns = preg_replace("/upper/", "normAndUp", $columns);
}
if (is_null ($numberPerPage)) {
$numberPerPage = getCurrentOption ("max_item_per_page");
}
if ($numberPerPage != -1 && $n != -1)
{
// First check total number of results
$result = self::getDb ($database)->prepare (str_format ($query, "count(*)", $filter));
$result->execute ($params);
$totalResult = $result->fetchColumn ();
// Next modify the query and params
$query .= " limit ?, ?";
array_push ($params, ($n - 1) * $numberPerPage, $numberPerPage);
}
$result = self::getDb ($database)->prepare(str_format ($query, $columns, $filter));
$result->execute ($params);
return array ($totalResult, $result);
}
}
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