609 строки
18 KiB
PHP
609 строки
18 KiB
PHP
<?php
|
|
/**
|
|
* PHP EPub Meta library
|
|
*
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*/
|
|
|
|
require_once('tbszip.php');
|
|
|
|
define ("METADATA_FILE", "META-INF/container.xml");
|
|
|
|
class EPub {
|
|
public $xml; //FIXME change to protected, later
|
|
protected $xpath;
|
|
protected $file;
|
|
protected $meta;
|
|
protected $zip;
|
|
protected $namespaces;
|
|
protected $imagetoadd='';
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param string $file path to epub file to work on
|
|
* @throws Exception if metadata could not be loaded
|
|
*/
|
|
public function __construct($file){
|
|
// open file
|
|
$this->file = $file;
|
|
$this->zip = new clsTbsZip();
|
|
if(!$this->zip->Open($this->file)){
|
|
throw new Exception('Failed to read epub file');
|
|
}
|
|
|
|
// read container data
|
|
if (!$this->zip->FileExists(METADATA_FILE)) {
|
|
throw new Exception ("Unable to find metadata.xml");
|
|
}
|
|
|
|
$data = $this->zip->FileRead(METADATA_FILE);
|
|
if($data == false){
|
|
throw new Exception('Failed to access epub container data');
|
|
}
|
|
$xml = new DOMDocument();
|
|
$xml->registerNodeClass('DOMElement','EPubDOMElement');
|
|
$xml->loadXML($data);
|
|
$xpath = new EPubDOMXPath($xml);
|
|
$nodes = $xpath->query('//n:rootfiles/n:rootfile[@media-type="application/oebps-package+xml"]');
|
|
$this->meta = $nodes->item(0)->attr('full-path');
|
|
|
|
// load metadata
|
|
if (!$this->zip->FileExists($this->meta)) {
|
|
throw new Exception ("Unable to find " . $this->meta);
|
|
}
|
|
|
|
$data = $this->zip->FileRead($this->meta);
|
|
if(!$data){
|
|
throw new Exception('Failed to access epub metadata');
|
|
}
|
|
$this->xml = new DOMDocument();
|
|
$this->xml->registerNodeClass('DOMElement','EPubDOMElement');
|
|
$this->xml->loadXML($data);
|
|
$this->xml->formatOutput = true;
|
|
$this->xpath = new EPubDOMXPath($this->xml);
|
|
}
|
|
|
|
/**
|
|
* file name getter
|
|
*/
|
|
public function file(){
|
|
return $this->file;
|
|
}
|
|
|
|
/**
|
|
* Close the epub file
|
|
*/
|
|
public function close (){
|
|
$this->zip->FileCancelModif($this->meta);
|
|
// TODO : Add cancelation of cover image
|
|
$this->zip->Close ();
|
|
}
|
|
|
|
/**
|
|
* Writes back all meta data changes
|
|
* TODO update
|
|
*/
|
|
public function save(){
|
|
$zip = new ZipArchive();
|
|
$res = @$zip->open($this->file, ZipArchive::CREATE);
|
|
if($res === false){
|
|
throw new Exception('Failed to write back metadata');
|
|
}
|
|
$zip->addFromString($this->meta,$this->xml->saveXML());
|
|
// add the cover image
|
|
if($this->imagetoadd){
|
|
$path = dirname('/'.$this->meta).'/php-epub-meta-cover.img'; // image path is relative to meta file
|
|
$path = ltrim($path,'/');
|
|
|
|
$zip->addFromString($path,file_get_contents($this->imagetoadd));
|
|
$this->imagetoadd='';
|
|
}
|
|
$zip->close();
|
|
}
|
|
|
|
/**
|
|
* Get the updated epub
|
|
*/
|
|
public function download($file){
|
|
$this->zip->FileReplace($this->meta,$this->xml->saveXML());
|
|
// add the cover image
|
|
if($this->imagetoadd){
|
|
$path = dirname('/'.$this->meta).'/php-epub-meta-cover.img'; // image path is relative to meta file
|
|
$path = ltrim($path,'/');
|
|
|
|
$this->zip->FileReplace($path,file_get_contents($this->imagetoadd));
|
|
$this->imagetoadd='';
|
|
}
|
|
$this->zip->Flush(TBSZIP_DOWNLOAD, $file);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Get or set the book author(s)
|
|
*
|
|
* Authors should be given with a "file-as" and a real name. The file as
|
|
* is used for sorting in e-readers.
|
|
*
|
|
* Example:
|
|
*
|
|
* array(
|
|
* 'Pratchett, Terry' => 'Terry Pratchett',
|
|
* 'Simpson, Jacqeline' => 'Jacqueline Simpson',
|
|
* )
|
|
*
|
|
* @params array $authors
|
|
*/
|
|
public function Authors($authors=false){
|
|
// set new data
|
|
if($authors !== false){
|
|
// Author where given as a comma separated list
|
|
if(is_string($authors)){
|
|
if($authors == ''){
|
|
$authors = array();
|
|
}else{
|
|
$authors = explode(',',$authors);
|
|
$authors = array_map('trim',$authors);
|
|
}
|
|
}
|
|
|
|
// delete existing nodes
|
|
$nodes = $this->xpath->query('//opf:metadata/dc:creator[@opf:role="aut"]');
|
|
foreach($nodes as $node) $node->delete();
|
|
|
|
// add new nodes
|
|
$parent = $this->xpath->query('//opf:metadata')->item(0);
|
|
foreach($authors as $as => $name){
|
|
if(is_int($as)) $as = $name; //numeric array given
|
|
$node = $parent->newChild('dc:creator',$name);
|
|
$node->attr('opf:role', 'aut');
|
|
$node->attr('opf:file-as', $as);
|
|
}
|
|
|
|
$this->reparse();
|
|
}
|
|
|
|
// read current data
|
|
$rolefix = false;
|
|
$authors = array();
|
|
$nodes = $this->xpath->query('//opf:metadata/dc:creator[@opf:role="aut"]');
|
|
if($nodes->length == 0){
|
|
// no nodes where found, let's try again without role
|
|
$nodes = $this->xpath->query('//opf:metadata/dc:creator');
|
|
$rolefix = true;
|
|
}
|
|
foreach($nodes as $node){
|
|
$name = $node->nodeValue;
|
|
$as = $node->attr('opf:file-as');
|
|
if(!$as){
|
|
$as = $name;
|
|
$node->attr('opf:file-as',$as);
|
|
}
|
|
if($rolefix){
|
|
$node->attr('opf:role','aut');
|
|
}
|
|
$authors[$as] = $name;
|
|
}
|
|
return $authors;
|
|
}
|
|
|
|
/**
|
|
* Set or get the book title
|
|
*
|
|
* @param string $title
|
|
*/
|
|
public function Title($title=false){
|
|
return $this->getset('dc:title',$title);
|
|
}
|
|
|
|
/**
|
|
* Set or get the book's language
|
|
*
|
|
* @param string $lang
|
|
*/
|
|
public function Language($lang=false){
|
|
return $this->getset('dc:language',$lang);
|
|
}
|
|
|
|
/**
|
|
* Set or get the book' publisher info
|
|
*
|
|
* @param string $publisher
|
|
*/
|
|
public function Publisher($publisher=false){
|
|
return $this->getset('dc:publisher',$publisher);
|
|
}
|
|
|
|
/**
|
|
* Set or get the book's copyright info
|
|
*
|
|
* @param string $rights
|
|
*/
|
|
public function Copyright($rights=false){
|
|
return $this->getset('dc:rights',$rights);
|
|
}
|
|
|
|
/**
|
|
* Set or get the book's description
|
|
*
|
|
* @param string $description
|
|
*/
|
|
public function Description($description=false){
|
|
return $this->getset('dc:description',$description);
|
|
}
|
|
|
|
/**
|
|
* Set or get the book's ISBN number
|
|
*
|
|
* @param string $isbn
|
|
*/
|
|
public function ISBN($isbn=false){
|
|
return $this->getset('dc:identifier',$isbn,'opf:scheme','ISBN');
|
|
}
|
|
|
|
/**
|
|
* Set or get the Google Books ID
|
|
*
|
|
* @param string $google
|
|
*/
|
|
public function Google($google=false){
|
|
return $this->getset('dc:identifier',$google,'opf:scheme','GOOGLE');
|
|
}
|
|
|
|
/**
|
|
* Set or get the Amazon ID of the book
|
|
*
|
|
* @param string $amazon
|
|
*/
|
|
public function Amazon($amazon=false){
|
|
return $this->getset('dc:identifier',$amazon,'opf:scheme','AMAZON');
|
|
}
|
|
|
|
/**
|
|
* Set or get the Serie of the book
|
|
*
|
|
* @param string $serie
|
|
*/
|
|
public function Serie($serie=false){
|
|
return $this->getset('opf:meta',$serie,'name','calibre:series','content');
|
|
}
|
|
|
|
/**
|
|
* Set or get the Serie Index of the book
|
|
*
|
|
* @param string $serieIndex
|
|
*/
|
|
public function SerieIndex($serieIndex=false){
|
|
return $this->getset('opf:meta',$serieIndex,'name','calibre:series_index','content');
|
|
}
|
|
|
|
/**
|
|
* Set or get the book's subjects (aka. tags)
|
|
*
|
|
* Subject should be given as array, but a comma separated string will also
|
|
* be accepted.
|
|
*
|
|
* @param array $subjects
|
|
*/
|
|
public function Subjects($subjects=false){
|
|
// setter
|
|
if($subjects !== false){
|
|
if(is_string($subjects)){
|
|
if($subjects === ''){
|
|
$subjects = array();
|
|
}else{
|
|
$subjects = explode(',',$subjects);
|
|
$subjects = array_map('trim',$subjects);
|
|
}
|
|
}
|
|
|
|
// delete previous
|
|
$nodes = $this->xpath->query('//opf:metadata/dc:subject');
|
|
foreach($nodes as $node){
|
|
$node->delete();
|
|
}
|
|
// add new ones
|
|
$parent = $this->xpath->query('//opf:metadata')->item(0);
|
|
foreach($subjects as $subj){
|
|
$node = $this->xml->createElement('dc:subject',htmlspecialchars($subj));
|
|
$node = $parent->appendChild($node);
|
|
}
|
|
|
|
$this->reparse();
|
|
}
|
|
|
|
//getter
|
|
$subjects = array();
|
|
$nodes = $this->xpath->query('//opf:metadata/dc:subject');
|
|
foreach($nodes as $node){
|
|
$subjects[] = $node->nodeValue;
|
|
}
|
|
return $subjects;
|
|
}
|
|
|
|
/**
|
|
* Read the cover data
|
|
*
|
|
* Returns an associative array with the following keys:
|
|
*
|
|
* mime - filetype (usually image/jpeg)
|
|
* data - the binary image data
|
|
* found - the internal path, or false if no image is set in epub
|
|
*
|
|
* When no image is set in the epub file, the binary data for a transparent
|
|
* GIF pixel is returned.
|
|
*
|
|
* When adding a new image this function return no or old data because the
|
|
* image contents are not in the epub file, yet. The image will be added when
|
|
* the save() method is called.
|
|
*
|
|
* @param string $path local filesystem path to a new cover image
|
|
* @param string $mime mime type of the given file
|
|
* @return array
|
|
*/
|
|
public function Cover($path=false, $mime=false){
|
|
// set cover
|
|
if($path !== false){
|
|
// remove current pointer
|
|
$nodes = $this->xpath->query('//opf:metadata/opf:meta[@name="cover"]');
|
|
foreach($nodes as $node) $node->delete();
|
|
// remove previous manifest entries if they where made by us
|
|
$nodes = $this->xpath->query('//opf:manifest/opf:item[@id="php-epub-meta-cover"]');
|
|
foreach($nodes as $node) $node->delete();
|
|
|
|
if($path){
|
|
// add pointer
|
|
$parent = $this->xpath->query('//opf:metadata')->item(0);
|
|
$node = $parent->newChild('opf:meta');
|
|
$node->attr('opf:name','cover');
|
|
$node->attr('opf:content','php-epub-meta-cover');
|
|
|
|
// add manifest
|
|
$parent = $this->xpath->query('//opf:manifest')->item(0);
|
|
$node = $parent->newChild('opf:item');
|
|
$node->attr('id','php-epub-meta-cover');
|
|
$node->attr('opf:href','php-epub-meta-cover.img');
|
|
$node->attr('opf:media-type',$mime);
|
|
|
|
// remember path for save action
|
|
$this->imagetoadd = $path;
|
|
}
|
|
|
|
$this->reparse();
|
|
}
|
|
|
|
// load cover
|
|
$nodes = $this->xpath->query('//opf:metadata/opf:meta[@name="cover"]');
|
|
if(!$nodes->length) return $this->no_cover();
|
|
$coverid = (String) $nodes->item(0)->attr('opf:content');
|
|
if(!$coverid) return $this->no_cover();
|
|
|
|
$nodes = $this->xpath->query('//opf:manifest/opf:item[@id="'.$coverid.'"]');
|
|
if(!$nodes->length) return $this->no_cover();
|
|
$mime = $nodes->item(0)->attr('opf:media-type');
|
|
$path = $nodes->item(0)->attr('opf:href');
|
|
$path = dirname('/'.$this->meta).'/'.$path; // image path is relative to meta file
|
|
$path = ltrim($path,'/');
|
|
|
|
$zip = new ZipArchive();
|
|
if(!@$zip->open($this->file)){
|
|
throw new Exception('Failed to read epub file');
|
|
}
|
|
$data = $zip->getFromName($path);
|
|
|
|
return array(
|
|
'mime' => $mime,
|
|
'data' => $data,
|
|
'found' => $path
|
|
);
|
|
}
|
|
|
|
/**
|
|
* A simple getter/setter for simple meta attributes
|
|
*
|
|
* It should only be used for attributes that are expected to be unique
|
|
*
|
|
* @param string $item XML node to set/get
|
|
* @param string $value New node value
|
|
* @param string $att Attribute name
|
|
* @param string $aval Attribute value
|
|
* @param string $datt Destination attribute
|
|
*/
|
|
protected function getset($item,$value=false,$att=false,$aval=false,$datt=false){
|
|
// construct xpath
|
|
$xpath = '//opf:metadata/'.$item;
|
|
if($att){
|
|
$xpath .= "[@$att=\"$aval\"]";
|
|
}
|
|
|
|
// set value
|
|
if($value !== false){
|
|
$value = htmlspecialchars($value);
|
|
$nodes = $this->xpath->query($xpath);
|
|
if($nodes->length == 1 ){
|
|
if($value === ''){
|
|
// the user want's to empty this value -> delete the node
|
|
$nodes->item(0)->delete();
|
|
}else{
|
|
// replace value
|
|
if ($datt){
|
|
$nodes->item(0)->attr ($datt, $value);
|
|
}else{
|
|
$nodes->item(0)->nodeValue = $value;
|
|
}
|
|
}
|
|
}else{
|
|
// if there are multiple matching nodes for some reason delete
|
|
// them. we'll replace them all with our own single one
|
|
foreach($nodes as $n) $n->delete();
|
|
// readd them
|
|
if($value){
|
|
$parent = $this->xpath->query('//opf:metadata')->item(0);
|
|
|
|
$node = $parent->newChild ($item);
|
|
if($att) $node->attr($att,$aval);
|
|
if ($datt){
|
|
$node->attr ($datt, $value);
|
|
}else{
|
|
$node->nodeValue = $value;
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->reparse();
|
|
}
|
|
|
|
// get value
|
|
$nodes = $this->xpath->query($xpath);
|
|
if($nodes->length){
|
|
if ($datt){
|
|
return $nodes->item(0)->attr ($datt);
|
|
}else{
|
|
return $nodes->item(0)->nodeValue;
|
|
}
|
|
}else{
|
|
return '';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return a not found response for Cover()
|
|
*/
|
|
protected function no_cover(){
|
|
return array(
|
|
'data' => base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAEALAAAAAABAAEAAAIBTAA7'),
|
|
'mime' => 'image/gif',
|
|
'found' => false
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Reparse the DOM tree
|
|
*
|
|
* I had to rely on this because otherwise xpath failed to find the newly
|
|
* added nodes
|
|
*/
|
|
protected function reparse() {
|
|
$this->xml->loadXML($this->xml->saveXML());
|
|
$this->xpath = new EPubDOMXPath($this->xml);
|
|
}
|
|
}
|
|
|
|
class EPubDOMXPath extends DOMXPath {
|
|
public function __construct(DOMDocument $doc){
|
|
parent::__construct($doc);
|
|
|
|
if(is_a($doc->documentElement, 'EPubDOMElement')){
|
|
foreach($doc->documentElement->namespaces as $ns => $url){
|
|
$this->registerNamespace($ns,$url);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class EPubDOMElement extends DOMElement {
|
|
public $namespaces = array(
|
|
'n' => 'urn:oasis:names:tc:opendocument:xmlns:container',
|
|
'opf' => 'http://www.idpf.org/2007/opf',
|
|
'dc' => 'http://purl.org/dc/elements/1.1/'
|
|
);
|
|
|
|
|
|
public function __construct($name, $value='', $namespaceURI=''){
|
|
list($ns,$name) = $this->splitns($name);
|
|
$value = htmlspecialchars($value);
|
|
if(!$namespaceURI && $ns){
|
|
$namespaceURI = $this->namespaces[$ns];
|
|
}
|
|
parent::__construct($name, $value, $namespaceURI);
|
|
}
|
|
|
|
|
|
/**
|
|
* Create and append a new child
|
|
*
|
|
* Works with our epub namespaces and omits default namespaces
|
|
*/
|
|
public function newChild($name, $value=''){
|
|
list($ns,$local) = $this->splitns($name);
|
|
if($ns){
|
|
$nsuri = $this->namespaces[$ns];
|
|
if($this->isDefaultNamespace($nsuri)){
|
|
$name = $local;
|
|
$nsuri = '';
|
|
}
|
|
}
|
|
|
|
// this doesn't call the construcor: $node = $this->ownerDocument->createElement($name,$value);
|
|
$node = new EPubDOMElement($name,$value,$nsuri);
|
|
return $this->appendChild($node);
|
|
}
|
|
|
|
/**
|
|
* Split given name in namespace prefix and local part
|
|
*
|
|
* @param string $name
|
|
* @return array (namespace, name)
|
|
*/
|
|
public function splitns($name){
|
|
$list = explode(':',$name,2);
|
|
if(count($list) < 2) array_unshift($list,'');
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Simple EPub namespace aware attribute accessor
|
|
*/
|
|
public function attr($attr,$value=null){
|
|
list($ns,$attr) = $this->splitns($attr);
|
|
|
|
$nsuri = '';
|
|
if($ns){
|
|
$nsuri = $this->namespaces[$ns];
|
|
if(!$this->namespaceURI){
|
|
if($this->isDefaultNamespace($nsuri)){
|
|
$nsuri = '';
|
|
}
|
|
}elseif($this->namespaceURI == $nsuri){
|
|
$nsuri = '';
|
|
}
|
|
}
|
|
|
|
if(!is_null($value)){
|
|
if($value === false){
|
|
// delete if false was given
|
|
if($nsuri){
|
|
$this->removeAttributeNS($nsuri,$attr);
|
|
}else{
|
|
$this->removeAttribute($attr);
|
|
}
|
|
}else{
|
|
// modify if value was given
|
|
if($nsuri){
|
|
$this->setAttributeNS($nsuri,$attr,$value);
|
|
}else{
|
|
$this->setAttribute($attr,$value);
|
|
}
|
|
}
|
|
}else{
|
|
// return value if none was given
|
|
if($nsuri){
|
|
return $this->getAttributeNS($nsuri,$attr);
|
|
}else{
|
|
return $this->getAttribute($attr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove this node from the DOM
|
|
*/
|
|
public function delete(){
|
|
$this->parentNode->removeChild($this);
|
|
}
|
|
|
|
}
|
|
|
|
|