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EPub.php
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<?php
/**
* Create an ePub compatible book file.
*
* Please note, once finalized a book can no longer have chapters of data added or changed.
*
* License: GNU LGPL, Attribution required for commercial implementations, requested for everything else.
*
* Thanks to: Adam Schmalhofer and Kirstyn Fox for invsaluable input and for "nudging" me in the right direction :)
*
* @author A. Grandt <[email protected]>
* @copyright 2009-2014 A. Grandt
* @license GNU LGPL 2.1
* @version 3.20
* @link http://www.phpclasses.org/package/6115
* @link https://github.com/Grandt/PHPePub
* @uses Zip.php version 1.50; http://www.phpclasses.org/browse/package/6110.html or https://github.com/Grandt/PHPZip
*/
class EPub
{
const VERSION = 3.20;
const REQ_ZIP_VERSION = 1.60;
const IDENTIFIER_UUID = 'UUID';
const IDENTIFIER_URI = 'URI';
const IDENTIFIER_ISBN = 'ISBN';
/** Ignore all external references, and do not process the file for these */
const EXTERNAL_REF_IGNORE = 0;
/** Process the file for external references and add them to the book */
const EXTERNAL_REF_ADD = 1;
/** Process the file for external references and add them to the book, but remove images, and img tags */
const EXTERNAL_REF_REMOVE_IMAGES = 2;
/** Process the file for external references and add them to the book, but replace images, and img tags with [image] */
const EXTERNAL_REF_REPLACE_IMAGES = 3;
const DIRECTION_LEFT_TO_RIGHT = "ltr";
const DIRECTION_RIGHT_TO_LEFT = "rtl";
const BOOK_VERSION_EPUB2 = "2.0";
const BOOK_VERSION_EPUB3 = "3.0";
private $bookVersion = EPub::BOOK_VERSION_EPUB2;
public $maxImageWidth = 768;
public $maxImageHeight = 1024;
public $splitDefaultSize = 250000;
/** Gifs can crash some early ADE based readers, and are disabled by default.
* getImage will convert these if it can, unless this is set to TRUE.
*/
public $isGifImagesEnabled = FALSE;
public $isReferencesAddedToToc = TRUE;
private $zip;
private $title = "";
private $language = "en";
private $identifier = "";
private $identifierType = "";
private $description = "";
private $author = "";
private $authorSortKey = "";
private $publisherName = "";
private $publisherURL = "";
private $date = 0;
private $rights = "";
private $coverage = "";
private $relation = "";
private $sourceURL = "";
private $chapterCount = 0;
private $opf = NULL;
private $ncx = NULL;
private $isFinalized = FALSE;
private $isCoverImageSet = FALSE;
private $buildTOC = FALSE;
private $tocTitle = NULL;
private $tocFileName = NULL;
private $tocCSSClass = NULL;
private $tocAddReferences = FALSE;
private $tocCssFileName = NULL;
private $fileList = array();
private $writingDirection = EPub::DIRECTION_LEFT_TO_RIGHT;
private $languageCode = "en";
/**
* Used for building the TOC.
* If this list is overwritten it MUST contain at least "text" as an element.
*/
public $referencesOrder = NULL;
private $dateformat = 'Y-m-d\TH:i:s.000000P'; // ISO 8601 long
private $dateformatShort = 'Y-m-d'; // short date format to placate ePubChecker.
private $headerDateFormat = "D, d M Y H:i:s T";
protected $isCurlInstalled;
protected $isGdInstalled;
protected $isExifInstalled;
protected $isFileGetContentsInstalled;
protected $isFileGetContentsExtInstalled;
private $bookRoot = "OEBPS/";
private $docRoot = NULL;
private $EPubMark = false;
private $generator = "";
private $log = NULL;
public $isLogging = TRUE;
public $encodeHTML = FALSE;
private $mimetypes = array(
"js" => "application/x-javascript", "swf" => "application/x-shockwave-flash", "xht" => "application/xhtml+xml", "xhtml" => "application/xhtml+xml", "zip" => "application/zip",
"aif" => "audio/x-aiff", "aifc" => "audio/x-aiff", "aiff" => "audio/x-aiff", "au" => "audio/basic", "kar" => "audio/midi", "m3u" => "audio/x-mpegurl", "mid" => "audio/midi", "midi" => "audio/midi", "mp2" => "audio/mpeg", "mp3" => "audio/mpeg", "mpga" => "audio/mpeg", "oga" => "audio/ogg", "ogg" => "audio/ogg", "ra" => "audio/x-realaudio", "ram" => "audio/x-pn-realaudio", "rm" => "audio/x-pn-realaudio", "rpm" => "audio/x-pn-realaudio-plugin", "snd" => "audio/basic", "wav" => "audio/x-wav",
"bmp" => "image/bmp", "djv" => "image/vnd.djvu", "djvu" => "image/vnd.djvu", "gif" => "image/gif", "ief" => "image/ief", "jpe" => "image/jpeg", "jpeg" => "image/jpeg", "jpg" => "image/jpeg", "pbm" => "image/x-portable-bitmap", "pgm" => "image/x-portable-graymap", "png" => "image/png", "pnm" => "image/x-portable-anymap", "ppm" => "image/x-portable-pixmap", "ras" => "image/x-cmu-raster", "rgb" => "image/x-rgb", "tif" => "image/tif", "tiff" => "image/tiff", "wbmp" => "image/vnd.wap.wbmp", "xbm" => "image/x-xbitmap", "xpm" => "image/x-xpixmap", "xwd" => "image/x-windowdump",
"asc" => "text/plain", "css" => "text/css", "etx" => "text/x-setext", "htm" => "text/html", "html" => "text/html", "rtf" => "text/rtf", "rtx" => "text/richtext", "sgm" => "text/sgml", "sgml" => "text/sgml", "tsv" => "text/tab-seperated-values", "txt" => "text/plain", "wml" => "text/vnd.wap.wml", "wmls" => "text/vnd.wap.wmlscript", "xml" => "text/xml", "xsl" => "text/xml",
"avi" => "video/x-msvideo", "mov" => "video/quicktime", "movie" => "video/x-sgi-movie", "mp4" => "video/mp4", "mpe" => "video/mpeg", "mpeg" => "video/mpeg", "mpg" => "video/mpeg", "mxu" => "video/vnd.mpegurl", "ogv" => "video/ogg", "qt" => "video/quicktime", "webm" => "video/webm");
// These are the ONLY allowed types in that these are the ones ANY reader must support, any other MUST have the fallback attribute pointing to one of these.
private $coreMediaTypes = array("image/gif", "image/jpeg", "image/png", "image/svg+xml", "application/xhtml+xml", "application/x-dtbook+xml", "application/xml", "application/x-dtbncx+xml", "text/css", "text/x-oeb1-css", "text/x-oeb1-document");
private $opsContentTypes = array("application/xhtml+xml", "application/x-dtbook+xml", "application/xml", "application/x-dtbncx+xml", "text/x-oeb1-document");
private $forbiddenCharacters = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", "%");
private $htmlContentHeader = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\"\n \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n<title></title>\n</head>\n<body>\n";
private $htmlContentFooter = "</body>\n</html>\n";
/**
* Class constructor.
*
* @return void
*/
function __construct($bookVersion = EPub::BOOK_VERSION_EPUB3, $languageCode = "en", $writingDirection = EPub::DIRECTION_LEFT_TO_RIGHT)
{
include_once("Zip.php");
include_once("Logger.php");
$this->bookVersion = $bookVersion;
$this->writingDirection = $writingDirection;
$this->languageCode = $languageCode;
$this->log = new Logger("EPub", $this->isLogging);
/* Prepare Logging. Just in case it's used. later */
if ($this->isLogging) {
$this->log->logLine("EPub class version....: " . self::VERSION);
$this->log->logLine("EPub req. Zip version.: " . self::REQ_ZIP_VERSION);
$this->log->logLine("Zip version...........: " . Zip::VERSION);
$this->log->dumpInstalledModules();
}
if (!defined("Zip::VERSION") || Zip::VERSION < self::REQ_ZIP_VERSION) {
die("<p>EPub version " . self::VERSION . " requires Zip.php at version " . self::REQ_ZIP_VERSION . " or higher.<br />You can obtain the latest version from <a href=\"http://www.phpclasses.org/browse/package/6110.html\">http://www.phpclasses.org/browse/package/6110.html</a>.</p>");
}
include_once("EPubChapterSplitter.php");
include_once("EPub.HtmlEntities.php");
include_once("EPub.NCX.php");
include_once("EPub.OPF.php");
$this->initialize();
}
/**
* Class destructor
*
* @return void
* @TODO make sure elements in the destructor match the current class elements
*/
function __destruct()
{
unset($this->bookVersion, $this->maxImageWidth, $this->maxImageHeight);
unset($this->splitDefaultSize, $this->isGifImagesEnabled, $this->isReferencesAddedToToc);
unset($this->zip, $this->title, $this->language, $this->identifier, $this->identifierType);
unset($this->description, $this->author, $this->authorSortKey, $this->publisherName);
unset($this->publisherURL, $this->date, $this->rights, $this->coverage, $this->relation);
unset($this->sourceURL, $this->chapterCount, $this->opf, $this->ncx, $this->isFinalized);
unset($this->isCoverImageSet, $this->fileList, $this->writingDirection, $this->languageCode);
unset($this->referencesOrder, $this->dateformat, $this->dateformatShort, $this->headerDateFormat);
unset($this->isCurlInstalled, $this->isGdInstalled, $this->isExifInstalled);
unset($this->isFileGetContentsInstalled, $this->isFileGetContentsExtInstalled, $this->bookRoot);
unset($this->docRoot, $this->EPubMark, $this->generator, $this->log, $this->isLogging);
unset($this->encodeHTML, $this->mimetypes, $this->coreMediaTypes, $this->opsContentTypes);
unset($this->forbiddenCharacters, $this->htmlContentHeader, $this->htmlContentFooter);
unset($this->buildTOC, $this->tocTitle, $this->tocCSSClass, $this->tocAddReferences);
unset($this->tocFileName, $this->tocCssFileName);
}
/**
* initialize defaults.
*/
private function initialize()
{
$this->referencesOrder = array(
Reference::COVER => "Cover Page",
Reference::TITLE_PAGE => "Title Page",
Reference::ACKNOWLEDGEMENTS => "Acknowledgements",
Reference::BIBLIOGRAPHY => "Bibliography",
Reference::COLOPHON => "Colophon",
Reference::COPYRIGHT_PAGE => "Copyright",
Reference::DEDICATION => "Dedication",
Reference::EPIGRAPH => "Epigraph",
Reference::FOREWORD => "Foreword",
Reference::TABLE_OF_CONTENTS => "Table of Contents",
Reference::NOTES => "Notes",
Reference::PREFACE => "Preface",
Reference::TEXT => "First Page",
Reference::LIST_OF_ILLUSTRATIONS => "List of Illustrations",
Reference::LIST_OF_TABLES => "List of Tables",
Reference::GLOSSARY => "Glossary",
Reference::INDEX => "Index");
$this->docRoot = filter_input(INPUT_SERVER, "DOCUMENT_ROOT") . "/";
$this->isCurlInstalled = extension_loaded('curl') && function_exists('curl_version');
$this->isGdInstalled = extension_loaded('gd') && function_exists('gd_info');
$this->isExifInstalled = extension_loaded('exif') && function_exists('exif_imagetype');
$this->isFileGetContentsInstalled = function_exists('file_get_contents');
$this->isFileGetContentsExtInstalled = $this->isFileGetContentsInstalled && ini_get('allow_url_fopen');
$this->zip = new Zip();
$this->zip->setExtraField(FALSE);
$this->zip->addFile("application/epub+zip", "mimetype");
$this->zip->setExtraField(TRUE);
$this->zip->addDirectory("META-INF");
$this->content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<container version=\"1.0\" xmlns=\"urn:oasis:names:tc:opendocument:xmlns:container\">\n\t<rootfiles>\n\t\t<rootfile full-path=\"" . $this->bookRoot . "book.opf\" media-type=\"application/oebps-package+xml\" />\n\t</rootfiles>\n</container>\n";
if (!$this->isEPubVersion2()) {
$this->htmlContentHeader = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
. "<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\">\n"
. "<head>"
. "<meta http-equiv=\"Default-Style\" content=\"text/html; charset=utf-8\" />\n"
. "<title></title>\n"
. "</head>\n"
. "<body>\n";
}
$this->zip->addFile($this->content, "META-INF/container.xml", 0, NULL, FALSE);
$this->content = NULL;
$this->ncx = new Ncx(NULL, NULL, NULL, $this->languageCode, $this->writingDirection);
$this->opf = new Opf();
$this->ncx->setVersion($this->bookVersion);
$this->opf->setVersion($this->bookVersion);
$this->opf->addItem("ncx", "book.ncx", Ncx::MIMETYPE);
$this->chapterCount = 0;
}
/**
* Add dynamically generated data as a file to the book.
*
* @param string $fileName Filename to use for the file, must be unique for the book.
* @param string $fileId Unique identifier for the file.
* @param string $fileData File data
* @param string $mimetype file mime type
* @return bool $success
*/
function addFile($fileName, $fileId, $fileData, $mimetype)
{
if ($this->isFinalized || array_key_exists($fileName, $this->fileList)) {
return FALSE;
}
$fileName = $this->normalizeFileName($fileName);
$compress = (strpos($mimetype, "image/") !== 0);
$this->zip->addFile($fileData, $this->bookRoot . $fileName, 0, NULL, $compress);
$this->fileList[$fileName] = $fileName;
$this->opf->addItem($fileId, $fileName, $mimetype);
return TRUE;
}
/**
* Add a large file directly from the filestystem to the book.
*
* @param string $fileName Filename to use for the file, must be unique for the book.
* @param string $fileId Unique identifier for the file.
* @param string $filePath File path
* @param string $mimetype file mime type
* @return bool $success
*/
function addLargeFile($fileName, $fileId, $filePath, $mimetype)
{
if ($this->isFinalized || array_key_exists($fileName, $this->fileList)) {
return FALSE;
}
$fileName = $this->normalizeFileName($fileName);
if ($this->zip->addLargeFile($filePath, $this->bookRoot . $fileName)) {
$this->fileList[$fileName] = $fileName;
$this->opf->addItem($fileId, $fileName, $mimetype);
return TRUE;
}
return FALSE;
}
/**
* Add a CSS file to the book.
*
* @param string $fileName Filename to use for the CSS file, must be unique for the book.
* @param string $fileId Unique identifier for the file.
* @param string $fileData CSS data
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? See documentation for <code>processCSSExternalReferences</code> for explanation. Default is EPub::EXTERNAL_REF_IGNORE.
* @param string $baseDir Default is "", meaning it is pointing to the document root. NOT used if $externalReferences is set to EPub::EXTERNAL_REF_IGNORE.
*
* @return bool $success
*/
function addCSSFile($fileName, $fileId, $fileData, $externalReferences = EPub::EXTERNAL_REF_IGNORE, $baseDir = "")
{
if ($this->isFinalized || array_key_exists($fileName, $this->fileList)) {
return FALSE;
}
$fileName = Zip::getRelativePath($fileName);
$fileName = preg_replace('#^[/\.]+#i', "", $fileName);
if ($externalReferences !== EPub::EXTERNAL_REF_IGNORE) {
$cssDir = pathinfo($fileName);
$cssDir = preg_replace('#^[/\.]+#i', "", $cssDir["dirname"] . "/");
if (!empty($cssDir)) {
$cssDir = preg_replace('#[^/]+/#i', "../", $cssDir);
}
$this->processCSSExternalReferences($fileData, $externalReferences, $baseDir, $cssDir);
}
$this->addFile($fileName, "css_" . $fileId, $fileData, "text/css");
return TRUE;
}
/**
* Add a chapter to the book, as a chapter should not exceed 250kB, you can parse an array with multiple parts as $chapterData.
* These will still only show up as a single chapter in the book TOC.
*
* @param string $chapterName Name of the chapter, will be use din the TOC
* @param string $fileName Filename to use for the chapter, must be unique for the book.
* @param string $chapter Chapter text in XHTML or array $chapterData valid XHTML data for the chapter. File should NOT exceed 250kB.
* @param bool $autoSplit Should the chapter be split if it exceeds the default split size? Default=FALSE, only used if $chapterData is a string.
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? See documentation for <code>processChapterExternalReferences</code> for explanation. Default is EPub::EXTERNAL_REF_IGNORE.
* @param string $baseDir Default is "", meaning it is pointing to the document root. NOT used if $externalReferences is set to EPub::EXTERNAL_REF_IGNORE.
* @return mixed $success FALSE if the addition failed, else the new NavPoint.
*/
function addChapter($chapterName, $fileName, $chapterData = NULL, $autoSplit = FALSE, $externalReferences = EPub::EXTERNAL_REF_IGNORE, $baseDir = "")
{
if ($this->isFinalized) {
return FALSE;
}
$fileName = Zip::getRelativePath($fileName);
$fileName = preg_replace('#^[/\.]+#i', "", $fileName);
$chapter = $chapterData;
if ($autoSplit && is_string($chapterData) && mb_strlen($chapterData) > $this->splitDefaultSize) {
$splitter = new EPubChapterSplitter();
$chapterArray = $splitter->splitChapter($chapterData);
if (count($chapterArray) > 1) {
$chapter = $chapterArray;
}
}
if (!empty($chapter) && is_string($chapter)) {
if ($externalReferences !== EPub::EXTERNAL_REF_IGNORE) {
$htmlDirInfo = pathinfo($fileName);
$htmlDir = preg_replace('#^[/\.]+#i', "", $htmlDirInfo["dirname"] . "/");
$this->processChapterExternalReferences($chapter, $externalReferences, $baseDir, $htmlDir);
}
if ($this->encodeHTML === TRUE) {
$chapter = $this->encodeHtml($chapter);
}
$this->chapterCount++;
$this->addFile($fileName, "chapter" . $this->chapterCount, $chapter, "application/xhtml+xml");
$this->opf->addItemRef("chapter" . $this->chapterCount);
$navPoint = new NavPoint($this->decodeHtmlEntities($chapterName), $fileName, "chapter" . $this->chapterCount);
$this->ncx->addNavPoint($navPoint);
$this->ncx->chapterList[$chapterName] = $navPoint;
} else if (is_array($chapter)) {
$fileNameParts = pathinfo($fileName);
$extension = $fileNameParts['extension'];
$name = $fileNameParts['filename'];
$partCount = 0;
$this->chapterCount++;
$oneChapter = each($chapter);
while ($oneChapter) {
list($k, $v) = $oneChapter;
if ($this->encodeHTML === TRUE) {
$v = $this->encodeHtml($v);
}
if ($externalReferences !== EPub::EXTERNAL_REF_IGNORE) {
$this->processChapterExternalReferences($v, $externalReferences, $baseDir);
}
$partCount++;
$partName = $name . "_" . $partCount;
$this->addFile($partName . "." . $extension, $partName, $v, "application/xhtml+xml");
$this->opf->addItemRef($partName);
$oneChapter = each($chapter);
}
$partName = $name . "_1." . $extension;
$navPoint = new NavPoint($this->decodeHtmlEntities($chapterName), $partName, $partName);
$this->ncx->addNavPoint($navPoint);
$this->ncx->chapterList[$chapterName] = $navPoint;
} else if (!isset($chapterData) && strpos($fileName, "#") > 0) {
$this->chapterCount++;
//$this->opf->addItemRef("chapter" . $this->chapterCount);
$navPoint = new NavPoint($this->decodeHtmlEntities($chapterName), $fileName, "chapter" . $this->chapterCount);
$this->ncx->addNavPoint($navPoint);
$this->ncx->chapterList[$chapterName] = $navPoint;
} else if (!isset($chapterData) && $fileName == "TOC.xhtml") {
$this->chapterCount++;
$this->opf->addItemRef("toc");
$navPoint = new NavPoint($this->decodeHtmlEntities($chapterName), $fileName, "chapter" . $this->chapterCount);
$this->ncx->addNavPoint($navPoint);
$this->ncx->chapterList[$chapterName] = $navPoint;
}
return $navPoint;
}
function addIntercalaire($chapterName, $fileName, $chapterData = NULL, $autoSplit = FALSE, $externalReferences = EPub::EXTERNAL_REF_IGNORE, $baseDir = "")
{
if ($this->isFinalized) {
return FALSE;
}
$fileName = Zip::getRelativePath($fileName);
$fileName = preg_replace('#^[/\.]+#i', "", $fileName);
$chapter = $chapterData;
if ($autoSplit && is_string($chapterData) && mb_strlen($chapterData) > $this->splitDefaultSize) {
$splitter = new EPubChapterSplitter();
$chapterArray = $splitter->splitChapter($chapterData);
if (count($chapterArray) > 1) {
$chapter = $chapterArray;
}
}
if (!empty($chapter) && is_string($chapter)) {
if ($externalReferences !== EPub::EXTERNAL_REF_IGNORE) {
$htmlDirInfo = pathinfo($fileName);
$htmlDir = preg_replace('#^[/\.]+#i', "", $htmlDirInfo["dirname"] . "/");
$this->processChapterExternalReferences($chapter, $externalReferences, $baseDir, $htmlDir);
}
if ($this->encodeHTML === TRUE) {
$chapter = $this->encodeHtml($chapter);
}
$this->chapterCount++;
$this->addFile($fileName, "chapter" . $this->chapterCount, $chapter, "application/xhtml+xml");
$this->opf->addItemRef("chapter" . $this->chapterCount);
/* $navPoint = new NavPoint($this->decodeHtmlEntities($chapterName), $fileName, "chapter" . $this->chapterCount);
$this->ncx->addNavPoint($navPoint);
$this->ncx->chapterList[$chapterName] = $navPoint;*/
}
return;
}
/**
* Add one chapter level.
*
* Subsequent chapters will be added to this level.
*
* @param string $navTitle
* @param string $navId
* @param string $navClass
* @param int $isNavHidden
* @param string $writingDirection
* @return NavPoint The new NavPoint for that level.
*/
function subLevel($navTitle = NULL, $navId = NULL, $navClass = NULL, $isNavHidden = FALSE, $writingDirection = NULL)
{
return $this->ncx->subLevel($this->decodeHtmlEntities($navTitle), $navId, $navClass, $isNavHidden, $writingDirection);
}
/**
* Step back one chapter level.
*
* Subsequent chapters will be added to this chapters parent level.
*/
function backLevel()
{
$this->ncx->backLevel();
}
/**
* Step back to the root level.
*
* Subsequent chapters will be added to the rooot NavMap.
*/
function rootLevel()
{
$this->ncx->rootLevel();
}
/**
* Step back to the given level.
* Useful for returning to a previous level from deep within the structure.
* Values below 2 will have the same effect as rootLevel()
*
* @param int $newLevel
*/
function setCurrentLevel($newLevel)
{
$this->ncx->setCurrentLevel($newLevel);
}
/**
* Get current level count.
* The indentation of the current structure point.
*
* @return current level count;
*/
function getCurrentLevel()
{
return $this->ncx->getCurrentLevel();
}
/**
* Wrap ChapterContent with Head and Footer
*
* @param $content
* @return string $content
*/
private function wrapChapter($content)
{
return $this->htmlContentHeader . "\n" . $content . "\n" . $this->htmlContentFooter;
}
/**
* Reference pages is usually one or two pages for items such as Table of Contents, reference lists, Author notes or Acknowledgements.
* These do not show up in the regular navigation list.
*
* As they are supposed to be short.
*
* @param string $pageName Name of the chapter, will be use din the TOC
* @param string $fileName Filename to use for the chapter, must be unique for the book.
* @param string $pageData Page content in XHTML. File should NOT exceed 250kB.
* @param string $reference Reference key
* @param int $externalReferences How to handle external references. See documentation for <code>processChapterExternalReferences</code> for explanation. Default is EPub::EXTERNAL_REF_IGNORE.
* @param string $baseDir Default is "", meaning it is pointing to the document root. NOT used if $externalReferences is set to EPub::EXTERNAL_REF_IGNORE.
* @return bool $success
*/
function addReferencePage($pageName, $fileName, $pageData, $reference, $externalReferences = EPub::EXTERNAL_REF_IGNORE, $baseDir = "")
{
if ($this->isFinalized) {
return FALSE;
}
$fileName = Zip::getRelativePath($fileName);
$fileName = preg_replace('#^[/\.]+#i', "", $fileName);
if (!empty($pageData) && is_string($pageData)) {
if ($this->encodeHTML === TRUE) {
$pageData = $this->encodeHtml($pageData);
}
$this->wrapChapter($pageData);
if ($externalReferences !== EPub::EXTERNAL_REF_IGNORE) {
$htmlDirInfo = pathinfo($fileName);
$htmlDir = preg_replace('#^[/\.]+#i', "", $htmlDirInfo["dirname"] . "/");
$this->processChapterExternalReferences($pageData, $externalReferences, $baseDir, $htmlDir);
}
$this->addFile($fileName, "ref_" . $reference, $pageData, "application/xhtml+xml");
if ($reference !== Reference::TABLE_OF_CONTENTS || !isset($this->ncx->referencesList[$reference])) {
$this->opf->addItemRef("ref_" . $reference, FALSE);
$this->opf->addReference($reference, $pageName, $fileName);
$this->ncx->referencesList[$reference] = $fileName;
$this->ncx->referencesName[$reference] = $pageName;
}
return TRUE;
}
return TRUE;
}
/**
* Add custom metadata to the book.
*
* It is up to the builder to make sure there are no collisions. Metadata are just key value pairs.
*
* @param string $name
* @param string $content
*/
function addCustomMetadata($name, $content)
{
$this->opf->addMeta($name, $content);
}
/**
* Add DublinCore metadata to the book
*
* Use the DublinCore constants included in EPub, ie DublinCore::DATE
*
* @param string $dublinCore name
* @param string $value
*/
function addDublinCoreMetadata($dublinCoreConstant, $value)
{
if ($this->isFinalized) {
return;
}
$this->opf->addDCMeta($dublinCoreConstant, $this->decodeHtmlEntities($value));
}
/**
* Add a cover image to the book.
* If the $imageData is not set, the function assumes the $fileName is the path to the image file.
*
* The styling and structure of the generated XHTML is heavily inspired by the XHTML generated by Calibre.
*
* @param string $fileName Filename to use for the image, must be unique for the book.
* @param string $imageData Binary image data
* @param string $mimetype Image mimetype, such as "image/jpeg" or "image/png".
* @return bool $success
*/
function setCoverImage($fileName, $imageData = NULL, $mimetype = NULL,$pageName)
{
if ($this->isFinalized || $this->isCoverImageSet || array_key_exists("CoverPage.html", $this->fileList)) {
return FALSE;
}
if ($imageData == NULL) {
// assume $fileName is the valid file path.
if (!file_exists($fileName)) {
// Attempt to locate the file using the doc root.
$rp = realpath($this->docRoot . "/" . $fileName);
if ($rp !== FALSE) {
// only assign the docroot path if it actually exists there.
$fileName = $rp;
}
}
$image = $this->getImage($fileName);
$imageData = $image['image'];
$mimetype = $image['mime'];
$fileName = preg_replace("#\.[^\.]+$#", "." . $image['ext'], $fileName);
}
$path = pathinfo($fileName);
$imgPath = "images/" . $path["basename"];
if (empty($mimetype) && file_exists($fileName)) {
list($width, $height, $type, $attr) = getimagesize($fileName);
$mimetype = image_type_to_mime_type($type);
}
if (empty($mimetype)) {
$ext = strtolower($path['extension']);
if ($ext == "jpg") {
$ext = "jpeg";
}
$mimetype = "image/" . $ext;
}
$coverPage = "";
if ($this->isEPubVersion2()) {
$coverPage = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
. "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\"\n"
. " \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n"
. "<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\" xml:lang=\"en\">\n"
. "\t<head>\n"
. "\t\t<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n"
. "\t\t<title>Cover Image</title>\n"
. "\t\t<link type=\"text/css\" rel=\"stylesheet\" href=\"Styles/CoverPage.css\" />\n"
. "\t</head>\n"
. "\t<body>\n"
. "\t\t<div>\n"
. "\t\t\t<img src=\"" . $imgPath . "\" alt=\"Cover image\" style=\"height: 100%\"/>\n"
. "\t\t</div>\n"
. "\t</body>\n"
. "</html>\n";
} else {
$coverPage = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
. "<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\">\n"
. "<head>"
. "\t<meta http-equiv=\"Default-Style\" content=\"text/html; charset=utf-8\" />\n"
. "\t\t<title>Cover Image</title>\n"
. "\t\t<link type=\"text/css\" rel=\"stylesheet\" href=\"Styles/CoverPage.css\" />\n"
. "\t</head>\n"
. "\t<body>\n"
. "\t\t<section epub:type=\"cover\">\n"
. "\t\t\t<img src=\"" . $imgPath . "\" alt=\"Cover image\" style=\"height: 100%\"/>\n"
. "\t\t</section>\n"
. "\t</body>\n"
. "</html>\n";
}
$coverPageCss = "@page, body, div, img {\n"
. "\tpadding: 0pt;\n"
. "\tmargin:0pt;\n"
. "}\n\nbody {\n"
. "\ttext-align: center;\n"
. "}\n";
$this->addCSSFile("Styles/CoverPage.css", "CoverPageCss", $coverPageCss);
$this->addFile($imgPath, "CoverImage", $imageData, $mimetype);
$this->addReferencePage($pageName, "CoverPage.xhtml", $coverPage, "cover");
$this->isCoverImageSet = TRUE;
return TRUE;
}
/**
* Process external references from a HTML to the book. The chapter itself is not stored.
* the HTML is scanned for <link..., <style..., and <img tags.
* Embedded CSS styles and links will also be processed.
* Script tags are not processed, as scripting should be avoided in e-books.
*
* EPub keeps track of added files, and duplicate files referenced across multiple
* chapters, are only added once.
*
* If the $doc is a string, it is assumed to be the content of an HTML file,
* else is it assumes to be a DOMDocument.
*
* Basedir is the root dir the HTML is supposed to "live" in, used to resolve
* relative references such as <code><img src="../images/image.png"/></code>
*
* $externalReferences determines how the function will handle external references.
*
* @param mixed &$doc (referenced)
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? Default is EPub::EXTERNAL_REF_ADD.
* @param string $baseDir Default is "", meaning it is pointing to the document root.
* @param string $htmlDir The path to the parent HTML file's directory from the root of the archive.
*
* @return bool FALSE if uncuccessful (book is finalized or $externalReferences == EXTERNAL_REF_IGNORE).
*/
protected function processChapterExternalReferences(&$doc, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $htmlDir = "")
{
if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
return FALSE;
}
$backPath = preg_replace('#[^/]+/#i', "../", $htmlDir);
$isDocAString = is_string($doc);
$xmlDoc = NULL;
if ($isDocAString) {
$xmlDoc = new DOMDocument();
@$xmlDoc->loadHTML($doc);
} else {
$xmlDoc = $doc;
}
$this->processChapterStyles($xmlDoc, $externalReferences, $baseDir, $htmlDir);
$this->processChapterLinks($xmlDoc, $externalReferences, $baseDir, $htmlDir, $backPath);
$this->processChapterImages($xmlDoc, $externalReferences, $baseDir, $htmlDir, $backPath);
$this->processChapterSources($xmlDoc, $externalReferences, $baseDir, $htmlDir, $backPath);
$doc = $xmlDoc->saveXML();
$doc = str_replace("<html>", "<html xmlns='http://www.w3.org/1999/xhtml'>", "$doc");
$doc = str_replace('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">', "", "$doc");
return true;
if ($isDocAString) {
//$html = $xmlDoc->saveXML();
$htmlNode = $xmlDoc->getElementsByTagName("html");
$headNode = $xmlDoc->getElementsByTagName("head");
$bodyNode = $xmlDoc->getElementsByTagName("body");
$htmlNS = "";
for ($index = 0; $index < $htmlNode->item(0)->attributes->length; $index++) {
$nodeName = $htmlNode->item(0)->attributes->item($index)->nodeName;
$nodeValue = $htmlNode->item(0)->attributes->item($index)->nodeValue;
if ($nodeName != "xmlns") {
$htmlNS .= " $nodeName=\"$nodeValue\"";
}
}
$xml = new DOMDocument('1.0', "utf-8");
$xml->lookupPrefix("http://www.w3.org/1999/xhtml");
$xml->preserveWhiteSpace = FALSE;
$xml->formatOutput = TRUE;
$xml2Doc = new DOMDocument('1.0', "utf-8");
$xml2Doc->lookupPrefix("http://www.w3.org/1999/xhtml");
$xml2Doc->loadXML("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\"\n \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\"$htmlNS>\n</html>\n");
$html = $xml2Doc->getElementsByTagName("html")->item(0);
$html->appendChild($xml2Doc->importNode($headNode->item(0), TRUE));
$html->appendChild($xml2Doc->importNode($bodyNode->item(0), TRUE));
// force pretty printing and correct formatting, should not be needed, but it is.
$xml->loadXML($xml2Doc->saveXML());
$doc = $xml->saveXML();
if (!$this->isEPubVersion2()) {
$doc = preg_replace('#^\s*<!DOCTYPE\ .+?>\s*#im', '', $doc);
}
}
return TRUE;
}
/**
* Process images referenced from an CSS file to the book.
*
* $externalReferences determins how the function will handle external references.
*
* @param string &$cssFile (referenced)
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? Default is EPub::EXTERNAL_REF_ADD.
* @param string $baseDir Default is "", meaning it is pointing to the document root.
* @param string $cssDir The of the CSS file's directory from the root of the archive.
*
* @return bool FALSE if unsuccessful (book is finalized or $externalReferences == EXTERNAL_REF_IGNORE).
*/
protected function processCSSExternalReferences(&$cssFile, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $cssDir = "")
{
if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
return FALSE;
}
$backPath = preg_replace('#[^/]+/#i', "../", $cssDir);
$imgs = null;
preg_match_all('#url\s*\([\'\"\s]*(.+?)[\'\"\s]*\)#im', $cssFile, $imgs, PREG_SET_ORDER);
$itemCount = count($imgs);
for ($idx = 0; $idx < $itemCount; $idx++) {
$img = $imgs[$idx];
if ($externalReferences === EPub::EXTERNAL_REF_REMOVE_IMAGES || $externalReferences === EPub::EXTERNAL_REF_REPLACE_IMAGES) {
$cssFile = str_replace($img[0], "", $cssFile);
} else {
if (strpos($img[0], "data:image") !== false) continue;
$source = $img[1];
$pathData = pathinfo($source);
$internalSrc = $pathData['basename'];
$internalPath = "";
$isSourceExternal = FALSE;
if ($this->resolveImage($source, $internalPath, $internalSrc, $isSourceExternal, $baseDir, $cssDir, $backPath)) {
$cssFile = str_replace($img[0], "url('" . $backPath . $internalPath . "')", $cssFile);
} else if ($isSourceExternal) {
$cssFile = str_replace($img[0], "", $cssFile); // External image is missing
} // else do nothing, if the image is local, and missing, assume it's been generated.
}
}
return TRUE;
}
/**
* Process style tags in a DOMDocument. Styles will be passed as CSS files and reinserted into the document.
*
* @param DOMDocument &$xmlDoc (referenced)
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? Default is EPub::EXTERNAL_REF_ADD.
* @param string $baseDir Default is "", meaning it is pointing to the document root.
* @param string $htmlDir The path to the parent HTML file's directory from the root of the archive.
*
* @return bool FALSE if uncuccessful (book is finalized or $externalReferences == EXTERNAL_REF_IGNORE).
*/
protected function processChapterStyles(&$xmlDoc, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $htmlDir = "")
{
if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
return FALSE;
}
// process inlined CSS styles in style tags.
$styles = $xmlDoc->getElementsByTagName("style");
$styleCount = $styles->length;
for ($styleIdx = 0; $styleIdx < $styleCount; $styleIdx++) {
$style = $styles->item($styleIdx);
$styleData = preg_replace('#[/\*\s]*\<\!\[CDATA\[[\s\*/]*#im', "", $style->nodeValue);
$styleData = preg_replace('#[/\*\s]*\]\]\>[\s\*/]*#im', "", $styleData);
$this->processCSSExternalReferences($styleData, $externalReferences, $baseDir, $htmlDir);
$style->nodeValue = "\n" . trim($styleData) . "\n";
}
return TRUE;
}
/**
* Process link tags in a DOMDocument. Linked files will be loaded into the archive, and the link src will be rewritten to point to that location.
* Link types text/css will be passed as CSS files.
*
* @param DOMDocument &$xmlDoc (referenced)
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? Default is EPub::EXTERNAL_REF_ADD.
* @param string $baseDir Default is "", meaning it is pointing to the document root.
* @param string $htmlDir The path to the parent HTML file's directory from the root of the archive.
* @param string $backPath The path to get back to the root of the archive from $htmlDir.
*
* @return bool FALSE if uncuccessful (book is finalized or $externalReferences == EXTERNAL_REF_IGNORE).
*/
protected function processChapterLinks(&$xmlDoc, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $htmlDir = "", $backPath = "")
{
if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
return FALSE;
}
// process link tags.
$links = $xmlDoc->getElementsByTagName("link");
$linkCount = $links->length;
for ($linkIdx = 0; $linkIdx < $linkCount; $linkIdx++) {
$link = $links->item($linkIdx);
$source = $link->attributes->getNamedItem("href")->nodeValue;
$sourceData = NULL;
$pathData = pathinfo($source);
$internalSrc = $pathData['basename'];
if (preg_match('#^(http|ftp)s?://#i', $source) == 1) {
$urlinfo = parse_url($source);
if (strpos($urlinfo['path'], $baseDir . "/") !== FALSE) {
$internalSrc = substr($urlinfo['path'], strpos($urlinfo['path'], $baseDir . "/") + strlen($baseDir) + 1);
}
@$sourceData = getFileContents($source);
} else if (strpos($source, "/") === 0) {
@$sourceData = file_get_contents($this->docRoot . $source);
} else {
@$sourceData = file_get_contents($this->docRoot . $baseDir . "/" . $source);
}
if (!empty($sourceData)) {
if (!array_key_exists($internalSrc, $this->fileList)) {
$mime = $link->attributes->getNamedItem("type")->nodeValue;
if (empty($mime)) {
$mime = "text/plain";
}
if ($mime == "text/css") {
$this->processCSSExternalReferences($sourceData, $externalReferences, $baseDir, $htmlDir);
$this->addCSSFile($internalSrc, $internalSrc, $sourceData, EPub::EXTERNAL_REF_IGNORE, $baseDir);
$link->setAttribute("href", $backPath . $internalSrc);
} else {
$this->addFile($internalSrc, $internalSrc, $sourceData, $mime);
}
$this->fileList[$internalSrc] = $source;
} else {
$link->setAttribute("href", $backPath . $internalSrc);
}
} // else do nothing, if the link is local, and missing, assume it's been generated.
}
return TRUE;
}
/**
* Process img tags in a DOMDocument.
* $externalReferences will determine what will happen to these images, and the img src will be rewritten accordingly.
*
* @param DOMDocument &$xmlDoc (referenced)
* @param int $externalReferences How to handle external references, EPub::EXTERNAL_REF_IGNORE, EPub::EXTERNAL_REF_ADD or EPub::EXTERNAL_REF_REMOVE_IMAGES? Default is EPub::EXTERNAL_REF_ADD.
* @param string $baseDir Default is "", meaning it is pointing to the document root.
* @param string $htmlDir The path to the parent HTML file's directory from the root of the archive.
* @param string $backPath The path to get back to the root of the archive from $htmlDir.
*
* @return bool FALSE if uncuccessful (book is finalized or $externalReferences == EXTERNAL_REF_IGNORE).
*/
protected function processChapterImages(&$xmlDoc, $externalReferences = EPub::EXTERNAL_REF_ADD, $baseDir = "", $htmlDir = "", $backPath = "")
{
if ($this->isFinalized || $externalReferences === EPub::EXTERNAL_REF_IGNORE) {
return FALSE;
}
// process img tags.
$postProcDomElememts = array();
$images = $xmlDoc->getElementsByTagName("img");
$itemCount = $images->length;
for ($idx = 0; $idx < $itemCount; $idx++) {
$img = $images->item($idx);
if ($externalReferences === EPub::EXTERNAL_REF_REMOVE_IMAGES) {
$postProcDomElememts[] = $img;
} else if ($externalReferences === EPub::EXTERNAL_REF_REPLACE_IMAGES) {
$altNode = $img->attributes->getNamedItem("alt");
$alt = "image";
if ($altNode !== NULL && strlen($altNode->nodeValue) > 0) {
$alt = $altNode->nodeValue;
}
$postProcDomElememts[] = array($img, $this->createDomFragment($xmlDoc, "<em>[" . $alt . "]</em>"));
} else {
$source = $img->attributes->getNamedItem("src")->nodeValue;
if (strpos($source, "base64") > 0) {
continue;
}
$parsedSource = parse_url($source);
$internalSrc = $this->sanitizeFileName(urldecode(pathinfo($parsedSource['path'], PATHINFO_BASENAME)));
$internalPath = "";
$isSourceExternal = FALSE;
if ($this->resolveImage($source, $internalPath, $internalSrc, $isSourceExternal, $baseDir, $htmlDir, $backPath)) {
$img->setAttribute("src", $backPath . $internalPath);
} else if ($isSourceExternal) {
$postProcDomElememts[] = $img; // External image is missing
} // else do nothing, if the image is local, and missing, assume it's been generated.
}
}
foreach ($postProcDomElememts as $target) {
if (is_array($target)) {