421 lines
12 KiB
PHP
421 lines
12 KiB
PHP
<?php
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/**
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* CalibreDbLoader class
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*
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
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* @author Didier Corbière <didier.corbiere@opale-concept.com>
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*/
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require_once(realpath(dirname(__FILE__)) . '/BookInfos.class.php');
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/**
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* Calibre database sql file that comes unmodified from Calibre project:
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* /calibre/resources/metadata_sqlite.sql
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*/
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define('CalibreCreateDbSql', realpath(dirname(__FILE__)) . '/metadata_sqlite.sql');
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/**
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* CalibreDbLoader class allows to open or create a new Calibre database,
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* and then add BookInfos objects into the database
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*/
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class CalibreDbLoader
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{
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private $mDb = null;
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/**
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* Open a Calibre database (or create if database does not exist)
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*
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* @param string Calibre database file name
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* @param boolean Force database creation
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*/
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public function __construct($inDbFileName, $inCreate = false)
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{
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if ($inCreate) {
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$this->CreateDatabase($inDbFileName);
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}
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else {
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$this->OpenDatabase($inDbFileName);
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}
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}
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/**
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* Create an sqlite database
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*
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* @param string Database file name
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* @throws Exception if error
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*
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* @return void
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*/
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private function CreateDatabase($inDbFileName)
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{
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// Read the sql file
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$content = file_get_contents(CalibreCreateDbSql);
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if ($content === false) {
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$error = sprintf('Cannot read sql file: %s', CalibreCreateDbSql);
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throw new Exception($error);
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}
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// Remove the database file
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if (file_exists($inDbFileName) && !unlink($inDbFileName)) {
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$error = sprintf('Cannot remove database file: %s', $inDbFileName);
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throw new Exception($error);
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}
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// Create the new database file
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$this->OpenDatabase($inDbFileName);
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// Create the database tables
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try {
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$sqlArray = explode('CREATE ', $content);
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foreach ($sqlArray as $sql) {
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$sql = trim($sql);
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if (empty($sql)) {
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continue;
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}
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$sql = 'CREATE ' . $sql;
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$str = strtolower($sql);
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if (strpos($str, 'create view') !== false) {
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continue;
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}
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if (strpos($str, 'title_sort') !== false) {
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continue;
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}
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$stmt = $this->mDb->prepare($sql);
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$stmt->execute();
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}
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}
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catch (Exception $e) {
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$error = sprintf('Cannot create database: %s', $e->getMessage());
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throw new Exception($error);
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}
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}
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/**
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* Open an sqlite database
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*
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* @param string Database file name
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* @throws Exception if error
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*
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* @return void
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*/
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private function OpenDatabase($inDbFileName)
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{
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try {
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// Init the Data Source Name
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$dsn = 'sqlite:' . $inDbFileName;
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// Open the database
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$this->mDb = new PDO($dsn); // Send an exception if error
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$this->mDb->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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//echo sprintf('Init database ok for: %s%s', $dsn, '<br />');
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}
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catch (Exception $e) {
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$error = sprintf('Cannot open database [%s]: %s', $dsn, $e->getMessage());
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throw new Exception($error);
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}
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}
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/**
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* Add an epub to the db
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*
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* @param string Epub file name
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* @throws Exception if error
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*
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* @return string Empty string or error if any
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*/
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public function AddEpub($inFileName)
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{
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$error = '';
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try {
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// Load the book infos
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$bookInfos = new BookInfos();
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$bookInfos->LoadFromEpub($inFileName);
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// Add the book
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$this->AddBook($bookInfos);
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}
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catch (Exception $e) {
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$error = $e->getMessage();
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}
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return $error;
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}
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/**
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* Add a new book into the db
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*
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* @param object BookInfo object
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* @throws Exception if error
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*
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* @return void
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*/
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private function AddBook($inBookInfo)
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{
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// Check if the book uuid does not already exist
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$sql = 'select b.id, b.title, b.path, d.name, d.format from books as b, data as d where d.book = b.id and uuid=:uuid';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':uuid', $inBookInfo->mUuid);
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$stmt->execute();
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while ($post = $stmt->fetchObject()) {
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$error = sprintf('Multiple book id for uuid: %s (already in file "%s/%s.%s" title "%s")', $inBookInfo->mUuid, $post->path, $post->name, $post->format, $post->title);
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throw new Exception($error);
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}
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// Add the book
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$sql = 'insert into books(title, sort, timestamp, pubdate, series_index, uuid, path) values(:title, :sort, :timestamp, :pubdate, :serieindex, :uuid, :path)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':title', $inBookInfo->mTitle);
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$stmt->bindParam(':sort', $inBookInfo->mTitle);
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$stmt->bindParam(':timestamp', empty($inBookInfo->mModificationDate) ? null : $inBookInfo->mModificationDate);
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$stmt->bindParam(':pubdate', empty($inBookInfo->mCreationDate) ? null : $inBookInfo->mCreationDate);
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$stmt->bindParam(':serieindex', $inBookInfo->mSerieIndex);
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$stmt->bindParam(':uuid', $inBookInfo->mUuid);
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$stmt->bindParam(':path', $inBookInfo->mPath);
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$stmt->execute();
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// Get the book id
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$sql = 'select id from books where uuid=:uuid';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':uuid', $inBookInfo->mUuid);
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$stmt->execute();
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$idBook = null;
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while ($post = $stmt->fetchObject()) {
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$idBook = $post->id;
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break;
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}
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if (!isset($idBook)) {
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$error = sprintf('Cannot find book id for uuid: %s', $inBookInfo->mUuid);
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throw new Exception($error);
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}
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// Add the book formats
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$sql = 'insert into data(book, format, name, uncompressed_size) values(:idBook, :format, :name, 0)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':format', $inBookInfo->mFormat);
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$stmt->bindParam(':name', $inBookInfo->mName);
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$stmt->execute();
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// Add the book comments
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$sql = 'insert into comments(book, text) values(:idBook, :text)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':text', $inBookInfo->mDescription);
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$stmt->execute();
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// Add the book identifiers
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if (!empty($inBookInfo->mUri)) {
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$sql = 'insert into identifiers(book, type, val) values(:idBook, :type, :value)';
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$identifiers = array();
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$identifiers['URI'] = $inBookInfo->mUri;
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$identifiers['ISBN'] = $inBookInfo->mIsbn;
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foreach ($identifiers as $key => $value) {
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if (empty($value)) {
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continue;
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}
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':type', $key);
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$stmt->bindParam(':value', $value);
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$stmt->execute();
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}
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}
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// Add the book serie
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if (!empty($inBookInfo->mSerie)) {
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// Get the serie id
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$sql = 'select id from series where name=:serie';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':serie', $inBookInfo->mSerie);
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$stmt->execute();
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$post = $stmt->fetchObject();
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if ($post) {
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$idSerie = $post->id;
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}
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else {
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// Add a new serie
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$sql = 'insert into series(name, sort) values(:serie, :sort)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':serie', $inBookInfo->mSerie);
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$stmt->bindParam(':sort', $inBookInfo->mSerie);
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$stmt->execute();
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// Get the serie id
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$sql = 'select id from series where name=:serie';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':serie', $inBookInfo->mSerie);
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$stmt->execute();
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$idSerie = null;
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while ($post = $stmt->fetchObject()) {
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if (!isset($idSerie)) {
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$idSerie = $post->id;
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}
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else {
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$error = sprintf('Multiple series for name: %s', $inBookInfo->mSerie);
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throw new Exception($error);
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}
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}
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if (!isset($idSerie)) {
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$error = sprintf('Cannot find serie id for name: %s', $inBookInfo->mSerie);
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throw new Exception($error);
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}
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}
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// Add the book serie link
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$sql = 'insert into books_series_link(book, series) values(:idBook, :idSerie)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':idSerie', $idSerie, PDO::PARAM_INT);
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$stmt->execute();
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}
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// Add the book authors
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foreach ($inBookInfo->mAuthors as $authorSort => $author) {
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// Get the author id
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$sql = 'select id from authors where name=:author';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':author', $author);
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$stmt->execute();
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$post = $stmt->fetchObject();
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if ($post) {
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$idAuthor = $post->id;
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}
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else {
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// Add a new author
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$sql = 'insert into authors(name, sort) values(:author, :sort)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':author', $author);
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$stmt->bindParam(':sort', $authorSort);
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$stmt->execute();
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// Get the author id
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$sql = 'select id from authors where name=:author';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':author', $author);
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$stmt->execute();
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$idAuthor = null;
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while ($post = $stmt->fetchObject()) {
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if (!isset($idAuthor)) {
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$idAuthor = $post->id;
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}
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else {
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$error = sprintf('Multiple authors for name: %s', $author);
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throw new Exception($error);
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}
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}
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if (!isset($idAuthor)) {
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$error = sprintf('Cannot find author id for name: %s', $author);
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throw new Exception($error);
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}
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}
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// Add the book author link
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$sql = 'insert into books_authors_link(book, author) values(:idBook, :idAuthor)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':idAuthor', $idAuthor, PDO::PARAM_INT);
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$stmt->execute();
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}
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// Add the book language
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{
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// Get the language id
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$sql = 'select id from languages where lang_code=:language';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':language', $inBookInfo->mLanguage);
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$stmt->execute();
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$post = $stmt->fetchObject();
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if ($post) {
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$idLanguage = $post->id;
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}
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else {
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// Add a new language
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$sql = 'insert into languages(lang_code) values(:language)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':language', $inBookInfo->mLanguage);
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$stmt->execute();
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// Get the language id
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$sql = 'select id from languages where lang_code=:language';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':language', $inBookInfo->mLanguage);
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$stmt->execute();
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$idLanguage = null;
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while ($post = $stmt->fetchObject()) {
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if (!isset($idLanguage)) {
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$idLanguage = $post->id;
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}
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else {
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$error = sprintf('Multiple languages for lang_code: %s', $inBookInfo->mLanguage);
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throw new Exception($error);
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}
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}
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if (!isset($idLanguage)) {
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$error = sprintf('Cannot find language id for lang_code: %s', $inBookInfo->mLanguage);
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throw new Exception($error);
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}
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}
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// Add the book language link
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$itemOder = 0;
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$sql = 'insert into books_languages_link(book, lang_code, item_order) values(:idBook, :idLanguage, :itemOrder)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':idLanguage', $idLanguage, PDO::PARAM_INT);
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$stmt->bindParam(':itemOrder', $itemOder, PDO::PARAM_INT);
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$stmt->execute();
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}
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// Add the book tags (subjects)
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foreach ($inBookInfo->mSubjects as $subject) {
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// Get the subject id
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$sql = 'select id from tags where name=:subject';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':subject', $subject);
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$stmt->execute();
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$post = $stmt->fetchObject();
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if ($post) {
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$idSubject = $post->id;
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}
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else {
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// Add a new subject
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$sql = 'insert into tags(name) values(:subject)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':subject', $subject);
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$stmt->execute();
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// Get the subject id
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$sql = 'select id from tags where name=:subject';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':subject', $subject);
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$stmt->execute();
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$idSubject = null;
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while ($post = $stmt->fetchObject()) {
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if (!isset($idSubject)) {
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$idSubject = $post->id;
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}
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else {
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$error = sprintf('Multiple subjects for name: %s', $subject);
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throw new Exception($error);
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}
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}
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if (!isset($idSubject)) {
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$error = sprintf('Cannot find subject id for name: %s', $subject);
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throw new Exception($error);
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}
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}
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// Add the book subject link
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$sql = 'insert into books_tags_link(book, tag) values(:idBook, :idSubject)';
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$stmt = $this->mDb->prepare($sql);
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$stmt->bindParam(':idBook', $idBook, PDO::PARAM_INT);
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$stmt->bindParam(':idSubject', $idSubject, PDO::PARAM_INT);
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$stmt->execute();
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}
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}
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/**
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* Check database for debug
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*
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* @return void
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*/
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private function CheckDatabase()
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{
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// Retrieve some infos for check only
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$sql = 'select id, title, sort from books';
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$stmt = $this->mDb->prepare($sql);
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$stmt->execute();
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while ($post = $stmt->fetchObject()) {
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$id = $post->id;
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$title = $post->title;
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$sort = $post->sort;
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}
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}
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}
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?>
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