cops/base.php

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<?php
/**
* COPS (Calibre OPDS PHP Server) class file
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author S<EFBFBD>bastien Lucas <sebastien@slucas.fr>
*/
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define ("VERSION", "0.3.0");
date_default_timezone_set($config['default_timezone']);
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function getURLParam ($name, $default = NULL) {
if (!empty ($_GET) && isset($_GET[$name])) {
return $_GET[$name];
}
return $default;
}
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function getUrlWithVersion ($url) {
return $url . "?v=" . VERSION;
}
/**
* This method is a direct copy-paste from
* http://tmont.com/blargh/2010/1/string-format-in-php
*/
function str_format($format) {
$args = func_get_args();
$format = array_shift($args);
preg_match_all('/(?=\{)\{(\d+)\}(?!\})/', $format, $matches, PREG_OFFSET_CAPTURE);
$offset = 0;
foreach ($matches[1] as $data) {
$i = $data[0];
$format = substr_replace($format, @$args[$i], $offset + $data[1] - 1, 2 + strlen($i));
$offset += strlen(@$args[$i]) - 2 - strlen($i);
}
return $format;
}
/**
* This method is based on this page
* http://www.mind-it.info/2010/02/22/a-simple-approach-to-localization-in-php/
*/
function localize($phrase) {
/* Static keyword is used to ensure the file is loaded only once */
static $translations = NULL;
/* If no instance of $translations has occured load the language file */
if (is_null($translations)) {
$lang = "en";
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
{
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
}
$lang_file_en = NULL;
$lang_file = 'lang/Localization_' . $lang . '.json';
if (!file_exists($lang_file)) {
$lang_file = 'lang/' . 'Localization_en.json';
}
elseif ($lang != "en") {
$lang_file_en = 'lang/' . 'Localization_en.json';
}
$lang_file_content = file_get_contents($lang_file);
/* Load the language file as a JSON object and transform it into an associative array */
$translations = json_decode($lang_file_content, true);
if ($lang_file_en)
{
$lang_file_content = file_get_contents($lang_file_en);
$translations_en = json_decode($lang_file_content, true);
$translations = array_merge ($translations_en, $translations);
}
}
return $translations[$phrase];
}
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class Link
{
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const OPDS_THUMBNAIL_TYPE = "http://opds-spec.org/image/thumbnail";
const OPDS_IMAGE_TYPE = "http://opds-spec.org/image";
const OPDS_ACQUISITION_TYPE = "http://opds-spec.org/acquisition";
const OPDS_NAVIGATION_TYPE = "application/atom+xml;profile=opds-catalog;kind=navigation";
const OPDS_PAGING_TYPE = "application/atom+xml;profile=opds-catalog;kind=acquisition";
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public $href;
public $type;
public $rel;
public $title;
public function __construct($phref, $ptype, $prel = NULL, $ptitle = NULL) {
$this->href = $phref;
$this->type = $ptype;
$this->rel = $prel;
$this->title = $ptitle;
}
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public function hrefXhtml () {
return str_replace ("&", "&amp;", $this->href);
}
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}
class LinkNavigation extends Link
{
public function __construct($phref, $prel = NULL, $ptitle = NULL) {
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parent::__construct ($phref, Link::OPDS_NAVIGATION_TYPE, $prel, $ptitle);
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$this->href = $_SERVER["SCRIPT_NAME"] . $this->href;
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}
}
class Entry
{
public $title;
public $id;
public $content;
public $contentType;
public $linkArray;
public $localUpdated;
private static $updated = NULL;
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public static $icons = array(
Author::ALL_AUTHORS_ID => 'images/author.png',
Serie::ALL_SERIES_ID => 'images/serie.png',
Book::ALL_RECENT_BOOKS_ID => 'images/recent.png',
Tag::ALL_TAGS_ID => 'images/tag.png',
"calibre:books$" => 'images/allbook.png',
"calibre:books:letter" => 'images/allbook.png'
);
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public function getUpdatedTime () {
if (!is_null ($this->localUpdated)) {
return date (DATE_ATOM, $this->localUpdated);
}
if (is_null (self::$updated)) {
self::$updated = time();
}
return date (DATE_ATOM, self::$updated);
}
public function __construct($ptitle, $pid, $pcontent, $pcontentType, $plinkArray) {
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global $config;
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$this->title = $ptitle;
$this->id = $pid;
$this->content = $pcontent;
$this->contentType = $pcontentType;
$this->linkArray = $plinkArray;
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if ($config['cops_show_icons'] == 1)
{
foreach (self::$icons as $reg => $image)
{
if (preg_match ("/" . $reg . "/", $pid)) {
array_push ($this->linkArray, new Link (getUrlWithVersion ($image), "image/png", Link::OPDS_THUMBNAIL_TYPE));
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break;
}
}
}
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}
}
class EntryBook extends Entry
{
public $book;
public function __construct($ptitle, $pid, $pcontent, $pcontentType, $plinkArray, $pbook) {
parent::__construct ($ptitle, $pid, $pcontent, $pcontentType, $plinkArray);
$this->book = $pbook;
$this->localUpdated = $pbook->timestamp;
}
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public function getCoverThumbnail () {
foreach ($this->linkArray as $link) {
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if ($link->rel == Link::OPDS_THUMBNAIL_TYPE)
return $link->hrefXhtml ();
}
return null;
}
public function getCover () {
foreach ($this->linkArray as $link) {
if ($link->rel == Link::OPDS_IMAGE_TYPE)
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return $link->hrefXhtml ();
}
return null;
}
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}
class Page
{
public $title;
public $subtitle = "";
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public $idPage;
public $idGet;
public $query;
public $favicon;
public $n;
public $totalNumber = -1;
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public $entryArray = array();
public static function getPage ($pageId, $id, $query, $n)
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{
switch ($pageId) {
case Base::PAGE_ALL_AUTHORS :
return new PageAllAuthors ($id, $query, $n);
case Base::PAGE_AUTHORS_FIRST_LETTER :
return new PageAllAuthorsLetter ($id, $query, $n);
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case Base::PAGE_AUTHOR_DETAIL :
return new PageAuthorDetail ($id, $query, $n);
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case Base::PAGE_ALL_TAGS :
return new PageAllTags ($id, $query, $n);
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case Base::PAGE_TAG_DETAIL :
return new PageTagDetail ($id, $query, $n);
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case Base::PAGE_ALL_SERIES :
return new PageAllSeries ($id, $query, $n);
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case Base::PAGE_ALL_BOOKS :
return new PageAllBooks ($id, $query, $n);
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case Base::PAGE_ALL_BOOKS_LETTER:
return new PageAllBooksLetter ($id, $query, $n);
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case Base::PAGE_ALL_RECENT_BOOKS :
return new PageRecentBooks ($id, $query, $n);
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case Base::PAGE_SERIE_DETAIL :
return new PageSerieDetail ($id, $query, $n);
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case Base::PAGE_OPENSEARCH_QUERY :
return new PageQueryResult ($id, $query, $n);
case Base::PAGE_BOOK_DETAIL :
return new PageBookDetail ($id, $query, $n);
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default:
$page = new Page ($id, $query, $n);
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$page->idPage = "cops:catalog";
return $page;
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}
}
public function __construct($pid, $pquery, $pn) {
global $config;
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$this->idGet = $pid;
$this->query = $pquery;
$this->n = $pn;
$this->favicon = $config['cops_icon'];
}
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public function InitializeContent ()
{
global $config;
$this->title = $config['cops_title_default'];
$this->subtitle = $config['cops_subtitle_default'];
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array_push ($this->entryArray, Author::getCount());
array_push ($this->entryArray, Serie::getCount());
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array_push ($this->entryArray, Tag::getCount());
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$this->entryArray = array_merge ($this->entryArray, Book::getCount());
}
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public function isPaginated ()
{
global $config;
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return ($config['cops_max_item_per_page'] != -1 &&
$this->totalNumber != -1 &&
$this->totalNumber > $config['cops_max_item_per_page']);
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}
public function getNextLink ()
{
global $config;
$currentUrl = $_SERVER['QUERY_STRING'];
$currentUrl = preg_replace ("/\&n=.*?$/", "", "?" . $_SERVER['QUERY_STRING']);
if (($this->n) * $config['cops_max_item_per_page'] < $this->totalNumber) {
return new LinkNavigation ($currentUrl . "&n=" . ($this->n + 1), "next", "Page suivante");
}
return NULL;
}
public function getPrevLink ()
{
global $config;
$currentUrl = $_SERVER['QUERY_STRING'];
$currentUrl = preg_replace ("/\&n=.*?$/", "", "?" . $_SERVER['QUERY_STRING']);
if ($this->n > 1) {
return new LinkNavigation ($currentUrl . "&n=" . ($this->n - 1), "previous", "Page precedente");
}
return NULL;
}
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public function getMaxPage ()
{
global $config;
return ceil ($this->totalNumber / $config['cops_max_item_per_page']);
}
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}
class PageAllAuthors extends Page
{
public function InitializeContent ()
{
global $config;
$this->title = localize("authors.title");
if ($config['cops_author_split_first_letter'] == 1) {
$this->entryArray = Author::getAllAuthorsByFirstLetter();
}
else {
$this->entryArray = Author::getAllAuthors();
}
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$this->idPage = Author::ALL_AUTHORS_ID;
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}
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}
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class PageAllAuthorsLetter extends Page
{
public function InitializeContent ()
{
global $config;
$this->idPage = Author::getEntryIdByLetter ($this->idGet);
$this->entryArray = Author::getAuthorsByStartingLetter ($this->idGet);
}
}
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class PageAuthorDetail extends Page
{
public function InitializeContent ()
{
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$author = Author::getAuthorById ($this->idGet);
$this->idPage = $author->getEntryId ();
$this->title = $author->name;
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list ($this->entryArray, $this->totalNumber) = Book::getBooksByAuthor ($this->idGet, $this->n);
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}
}
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class PageAllTags extends Page
{
public function InitializeContent ()
{
$this->title = localize("tags.title");
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$this->entryArray = Tag::getAllTags();
$this->idPage = Tag::ALL_TAGS_ID;
}
}
class PageTagDetail extends Page
{
public function InitializeContent ()
{
$tag = Tag::getTagById ($this->idGet);
$this->idPage = $tag->getEntryId ();
$this->title = $tag->name;
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list ($this->entryArray, $this->totalNumber) = Book::getBooksByTag ($this->idGet, $this->n);
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}
}
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class PageAllSeries extends Page
{
public function InitializeContent ()
{
$this->title = localize("series.title");
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$this->entryArray = Serie::getAllSeries();
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$this->idPage = Serie::ALL_SERIES_ID;
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}
}
class PageSerieDetail extends Page
{
public function InitializeContent ()
{
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$serie = Serie::getSerieById ($this->idGet);
$this->title = $serie->name;
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list ($this->entryArray, $this->totalNumber) = Book::getBooksBySeries ($this->idGet, $this->n);
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$this->idPage = $serie->getEntryId ();
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}
}
class PageAllBooks extends Page
{
public function InitializeContent ()
{
$this->title = localize ("allbooks.title");
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$this->entryArray = Book::getAllBooks ();
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$this->idPage = Book::ALL_BOOKS_ID;
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}
}
class PageAllBooksLetter extends Page
{
public function InitializeContent ()
{
$this->title = str_format (localize ("splitByLetter.letter"), localize ("bookword.title"), $this->idGet);
list ($this->entryArray, $this->totalNumber) = Book::getBooksByStartingLetter ($this->idGet, $this->n);
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$this->idPage = Book::getEntryIdByLetter ($this->idGet);
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}
}
class PageRecentBooks extends Page
{
public function InitializeContent ()
{
$this->title = localize ("recent.title");
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$this->entryArray = Book::getAllRecentBooks ();
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$this->idPage = Book::ALL_RECENT_BOOKS_ID;
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}
}
class PageQueryResult extends Page
{
public function InitializeContent ()
{
$this->title = "Search result for query *" . $this->query . "*"; // TODO I18N
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list ($this->entryArray, $this->totalNumber) = Book::getBooksByQuery ($this->query, $this->n);
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}
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}
class PageBookDetail extends Page
{
public function InitializeContent ()
{
$book = Book::getBookById ($this->idGet);
$this->title = $book->title;
}
}
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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";
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const PAGE_ALL_TAGS = "11";
const PAGE_TAG_DETAIL = "12";
const PAGE_BOOK_DETAIL = "13";
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const COMPATIBILITY_XML_ALDIKO = "aldiko";
private static $db = NULL;
public static function getDb () {
global $config;
if (is_null (self::$db)) {
try {
self::$db = new PDO('sqlite:'. $config['calibre_directory'] .'metadata.db');
} catch (Exception $e) {
echo $e;
die($e);
}
}
return self::$db;
}
public static function executeQuery($query, $columns, $params, $n) {
global $config;
$totalResult = -1;
if ($config['cops_max_item_per_page'] != -1 && $n != -1)
{
// First check total number of results
$result = self::getDb ()->prepare (str_format ($query, "count(*)"));
$result->execute ($params);
$totalResult = $result->fetchColumn ();
// Next modify the query and params
$query .= " limit ?, ?";
array_push ($params, ($n - 1) * $config['cops_max_item_per_page'], $config['cops_max_item_per_page']);
}
$result = self::getDb ()->prepare(str_format ($query, $columns));
$result->execute ($params);
return array ($totalResult, $result);
}
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}
?>