[github/wallabag/wallabag.git] / src / Wallabag / CoreBundle / Helper / EntriesExport.php

<?php

namespace Wallabag\CoreBundle\Helper;

use JMS\Serializer;
use JMS\Serializer\SerializationContext;
use JMS\Serializer\SerializerBuilder;
use PHPePub\Core\EPub;
use PHPePub\Core\Structure\OPF\DublinCore;
use Symfony\Component\HttpFoundation\Response;
use Craue\ConfigBundle\Util\Config;

/**
 * This class doesn't have unit test BUT it's fully covered by a functional test with ExportControllerTest.
 */
class EntriesExport
{
    private $wallabagUrl;
    private $logoPath;
    private $title = '';
    private $entries = array();
    private $authors = array('wallabag');
    private $language = '';
    private $tags = array();
    private $footerTemplate = '<div style="text-align:center;">
        <p>Produced by wallabag with %EXPORT_METHOD%</p>
        <p>Please open <a href="https://github.com/wallabag/wallabag/issues">an issue</a> if you have trouble with the display of this E-Book on your device.</p>
        </div';

    /**
     * @param Config $craueConfig CraueConfig instance to get wallabag instance url from database
     * @param string $logoPath    Path to the logo FROM THE BUNDLE SCOPE
     */
    public function __construct(Config $craueConfig, $logoPath)
    {
        $this->wallabagUrl = $craueConfig->get('wallabag_url');
        $this->logoPath = $logoPath;
    }

    /**
     * Define entries.
     *
     * @param array|Entry $entries An array of entries or one entry
     */
    public function setEntries($entries)
    {
        if (!is_array($entries)) {
            $this->language = $entries->getLanguage();
            $entries = array($entries);
        }

        $this->entries = $entries;

        foreach ($entries as $entry) {
            $this->tags[] = $entry->getTags();
        }

        return $this;
    }

    /**
     * Sets the category of which we want to get articles, or just one entry.
     *
     * @param string $method Method to get articles
     */
    public function updateTitle($method)
    {
        $this->title = $method.' articles';

        if ('entry' === $method) {
            $this->title = $this->entries[0]->getTitle();
        }

        return $this;
    }

    /**
     * Sets the output format.
     *
     * @param string $format
     */
    public function exportAs($format)
    {
        switch ($format) {
            case 'epub':
                return $this->produceEpub();

            case 'mobi':
                return $this->produceMobi();

            case 'pdf':
                return $this->producePDF();

            case 'csv':
                return $this->produceCSV();

            case 'json':
                return $this->produceJSON();

            case 'xml':
                return $this->produceXML();
        }

        throw new \InvalidArgumentException(sprintf('The format "%s" is not yet supported.', $format));
    }

    /**
     * Use PHPePub to dump a .epub file.
     */
    private function produceEpub()
    {
        /*
         * Start and End of the book
         */
        $content_start =
            "<?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>wallabag articles book</title>\n"
            ."</head>\n"
            ."<body>\n";

        $bookEnd = "</body>\n</html>\n";

        $book = new EPub(EPub::BOOK_VERSION_EPUB3);

        /*
         * Book metadata
         */

        $book->setTitle($this->title);
        // Could also be the ISBN number, prefered for published books, or a UUID.
        $book->setIdentifier($this->title, EPub::IDENTIFIER_URI);
        // Not needed, but included for the example, Language is mandatory, but EPub defaults to "en". Use RFC3066 Language codes, such as "en", "da", "fr" etc.
        $book->setLanguage($this->language);
        $book->setDescription('Some articles saved on my wallabag');

        foreach ($this->authors as $author) {
            $book->setAuthor($author, $author);
        }

        // I hope this is a non existant address :)
        $book->setPublisher('wallabag', 'wallabag');
        // Strictly not needed as the book date defaults to time().
        $book->setDate(time());
        $book->setSourceURL($this->wallabagUrl);

        $book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'PHP');
        $book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'wallabag');

        /*
         * Front page
         */
        if (file_exists($this->logoPath)) {
            $book->setCoverImage('Cover.png', file_get_contents($this->logoPath), 'image/png');
        }

        $book->addChapter('Notices', 'Cover2.html', $content_start.$this->getExportInformation('PHPePub').$bookEnd);

        $book->buildTOC();

        /*
         * Adding actual entries
         */

        // set tags as subjects
        foreach ($this->entries as $entry) {
            foreach ($this->tags as $tag) {
                $book->setSubject($tag['value']);
            }

            $chapter = $content_start.$entry->getContent().$bookEnd;
            $book->addChapter($entry->getTitle(), htmlspecialchars($entry->getTitle()).'.html', $chapter, true, EPub::EXTERNAL_REF_ADD);
        }

        return Response::create(
            $book->getBook(),
            200,
            array(
                'Content-Description' => 'File Transfer',
                'Content-type' => 'application/epub+zip',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.epub"',
                'Content-Transfer-Encoding' => 'binary',
            )
        )->send();
    }

    /**
     * Use PHPMobi to dump a .mobi file.
     */
    private function produceMobi()
    {
        $mobi = new \MOBI();
        $content = new \MOBIFile();

        /*
         * Book metadata
         */
        $content->set('title', $this->title);
        $content->set('author', implode($this->authors));
        $content->set('subject', $this->title);

        /*
         * Front page
         */
        $content->appendParagraph($this->getExportInformation('PHPMobi'));
        if (file_exists($this->logoPath)) {
            $content->appendImage(imagecreatefrompng($this->logoPath));
        }
        $content->appendPageBreak();

        /*
         * Adding actual entries
         */
        foreach ($this->entries as $entry) {
            $content->appendChapterTitle($entry->getTitle());
            $content->appendParagraph($entry->getContent());
            $content->appendPageBreak();
        }
        $mobi->setContentProvider($content);

        // the browser inside Kindle Devices doesn't likes special caracters either, we limit to A-z/0-9
        $this->title = preg_replace('/[^A-Za-z0-9\-]/', '', $this->title);

        return Response::create(
            $mobi->toString(),
            200,
            array(
                'Accept-Ranges' => 'bytes',
                'Content-Description' => 'File Transfer',
                'Content-type' => 'application/x-mobipocket-ebook',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.mobi"',
                'Content-Transfer-Encoding' => 'binary',
            )
        )->send();
    }

    /**
     * Use TCPDF to dump a .pdf file.
     */
    private function producePDF()
    {
        $pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

        /*
         * Book metadata
         */
        $pdf->SetCreator(PDF_CREATOR);
        $pdf->SetAuthor('wallabag');
        $pdf->SetTitle($this->title);
        $pdf->SetSubject('Articles via wallabag');
        $pdf->SetKeywords('wallabag');

        /*
         * Front page
         */
        $pdf->AddPage();
        $intro = '<h1>'.$this->title.'</h1>'.$this->getExportInformation('tcpdf');

        $pdf->writeHTMLCell(0, 0, '', '', $intro, 0, 1, 0, true, '', true);

        /*
         * Adding actual entries
         */
        foreach ($this->entries as $entry) {
            foreach ($this->tags as $tag) {
                $pdf->SetKeywords($tag['value']);
            }

            $pdf->AddPage();
            $html = '<h1>'.$entry->getTitle().'</h1>';
            $html .= $entry->getContent();

            $pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
        }

        // set image scale factor
        $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

        return Response::create(
            $pdf->Output('', 'S'),
            200,
            array(
                'Content-Description' => 'File Transfer',
                'Content-type' => 'application/pdf',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.pdf"',
                'Content-Transfer-Encoding' => 'binary',
            )
        )->send();
    }

    /**
     * Inspired from CsvFileDumper.
     */
    private function produceCSV()
    {
        $delimiter = ';';
        $enclosure = '"';
        $handle = fopen('php://memory', 'rb+');

        fputcsv($handle, array('Title', 'URL', 'Content', 'Tags', 'MIME Type', 'Language'), $delimiter, $enclosure);

        foreach ($this->entries as $entry) {
            fputcsv(
                $handle,
                array(
                    $entry->getTitle(),
                    $entry->getURL(),
                    // remove new line to avoid crazy results
                    str_replace(array("\r\n", "\r", "\n"), '', $entry->getContent()),
                    implode(', ', $entry->getTags()->toArray()),
                    $entry->getMimetype(),
                    $entry->getLanguage(),
                ),
                $delimiter,
                $enclosure
            );
        }

        rewind($handle);
        $output = stream_get_contents($handle);
        fclose($handle);

        return Response::create(
            $output,
            200,
            array(
                'Content-type' => 'application/csv',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.csv"',
                'Content-Transfer-Encoding' => 'UTF-8',
            )
        )->send();
    }

    private function produceJSON()
    {
        return Response::create(
            $this->prepareSerializingContent('json'),
            200,
            array(
                'Content-type' => 'application/json',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.json"',
                'Content-Transfer-Encoding' => 'UTF-8',
            )
        )->send();
    }

    private function produceXML()
    {
        return Response::create(
            $this->prepareSerializingContent('xml'),
            200,
            array(
                'Content-type' => 'application/xml',
                'Content-Disposition' => 'attachment; filename="'.$this->title.'.xml"',
                'Content-Transfer-Encoding' => 'UTF-8',
            )
        )->send();
    }

    /**
     * Return a Serializer object for producing processes that need it (JSON & XML).
     *
     * @return Serializer
     */
    private function prepareSerializingContent($format)
    {
        $serializer = SerializerBuilder::create()->build();

        return $serializer->serialize(
            $this->entries,
            $format,
            SerializationContext::create()->setGroups(array('entries_for_user'))
        );
    }

    /**
     * Return a kind of footer / information for the epub.
     *
     * @param string $type Generator of the export, can be: tdpdf, PHPePub, PHPMobi
     *
     * @return string
     */
    private function getExportInformation($type)
    {
        $info = str_replace('%EXPORT_METHOD%', $type, $this->footerTemplate);

        if ('tcpdf' === $type) {
            return str_replace('%IMAGE%', '<img src="'.$this->logoPath.'" />', $info);
        }

        return str_replace('%IMAGE%', '', $info);
    }
}
Commit	Line	Data
03690d13 TC	1	<?php
	2
	3	namespace Wallabag\CoreBundle\Helper;
	4
619cc453 JB	5	use JMS\Serializer;
	6	use JMS\Serializer\SerializationContext;
	7	use JMS\Serializer\SerializerBuilder;
03690d13 TC	8	use PHPePub\Core\EPub;
03690d13 TC	9	use PHPePub\Core\Structure\OPF\DublinCore;
add597ba	10	use Symfony\Component\HttpFoundation\Response;
63e40f2d	11	use Craue\ConfigBundle\Util\Config;
03690d13	12
cceca9ea JB	13	/**
	14	* This class doesn't have unit test BUT it's fully covered by a functional test with ExportControllerTest.
	15	*/
03690d13 TC	16	class EntriesExport
03690d13 TC	17	{
add597ba JB	18	private $wallabagUrl;
	19	private $logoPath;
	20	private $title = '';
	21	private $entries = array();
03690d13	22	private $authors = array('wallabag');
add597ba JB	23	private $language = '';
	24	private $tags = array();
	25	private $footerTemplate = '<div style="text-align:center;">
	26	<p>Produced by wallabag with %EXPORT_METHOD%</p>
	27	<p>Please open <a href="https://github.com/wallabag/wallabag/issues">an issue</a> if you have trouble with the display of this E-Book on your device.</p>
	28	</div';
03690d13	29
add597ba	30	/**
63e40f2d	31	* @param Config $craueConfig CraueConfig instance to get wallabag instance url from database
add597ba JB	32	* @param string $logoPath Path to the logo FROM THE BUNDLE SCOPE
add597ba JB	33	*/
63e40f2d	34	public function __construct(Config $craueConfig, $logoPath)
03690d13	35	{
63e40f2d	36	$this->wallabagUrl = $craueConfig->get('wallabag_url');
add597ba JB	37	$this->logoPath = $logoPath;
	38	}
	39
	40	/**
	41	* Define entries.
	42	*
	43	* @param array\|Entry $entries An array of entries or one entry
	44	*/
	45	public function setEntries($entries)
	46	{
	47	if (!is_array($entries)) {
	48	$this->language = $entries->getLanguage();
	49	$entries = array($entries);
	50	}
	51
03690d13 TC	52	$this->entries = $entries;
	53
	54	foreach ($entries as $entry) {
	55	$this->tags[] = $entry->getTags();
	56	}
add597ba JB	57
add597ba JB	58	return $this;
03690d13 TC	59	}
	60
	61	/**
	62	* Sets the category of which we want to get articles, or just one entry.
	63	*
	64	* @param string $method Method to get articles
	65	*/
add597ba	66	public function updateTitle($method)
03690d13	67	{
add597ba JB	68	$this->title = $method.' articles';
	69
	70	if ('entry' === $method) {
	71	$this->title = $this->entries[0]->getTitle();
03690d13	72	}
add597ba JB	73
add597ba JB	74	return $this;
03690d13 TC	75	}
	76
	77	/**
	78	* Sets the output format.
	79	*
	80	* @param string $format
	81	*/
	82	public function exportAs($format)
	83	{
add597ba	84	switch ($format) {
03690d13	85	case 'epub':
add597ba	86	return $this->produceEpub();
03690d13 TC	87
03690d13 TC	88	case 'mobi':
add597ba	89	return $this->produceMobi();
03690d13 TC	90
03690d13 TC	91	case 'pdf':
add597ba	92	return $this->producePDF();
03690d13 TC	93
03690d13 TC	94	case 'csv':
add597ba	95	return $this->produceCSV();
b3cc1a14 TC	96
	97	case 'json':
	98	return $this->produceJSON();
	99
	100	case 'xml':
	101	return $this->produceXML();
03690d13	102	}
add597ba JB	103
add597ba JB	104	throw new \InvalidArgumentException(sprintf('The format "%s" is not yet supported.', $format));
03690d13 TC	105	}
03690d13 TC	106
add597ba JB	107	/**
	108	* Use PHPePub to dump a .epub file.
	109	*/
03690d13 TC	110	private function produceEpub()
	111	{
	112	/*
	113	* Start and End of the book
	114	*/
	115	$content_start =
	116	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
	117	."<html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:epub=\"http://www.idpf.org/2007/ops\">\n"
	118	.'<head>'
	119	."<meta http-equiv=\"Default-Style\" content=\"text/html; charset=utf-8\" />\n"
add597ba	120	."<title>wallabag articles book</title>\n"
03690d13 TC	121	."</head>\n"
	122	."<body>\n";
	123
	124	$bookEnd = "</body>\n</html>\n";
	125
	126	$book = new EPub(EPub::BOOK_VERSION_EPUB3);
	127
	128	/*
	129	* Book metadata
	130	*/
	131
	132	$book->setTitle($this->title);
add597ba JB	133	// Could also be the ISBN number, prefered for published books, or a UUID.
	134	$book->setIdentifier($this->title, EPub::IDENTIFIER_URI);
	135	// Not needed, but included for the example, Language is mandatory, but EPub defaults to "en". Use RFC3066 Language codes, such as "en", "da", "fr" etc.
	136	$book->setLanguage($this->language);
	137	$book->setDescription('Some articles saved on my wallabag');
03690d13 TC	138
	139	foreach ($this->authors as $author) {
	140	$book->setAuthor($author, $author);
	141	}
	142
add597ba JB	143	// I hope this is a non existant address :)
	144	$book->setPublisher('wallabag', 'wallabag');
	145	// Strictly not needed as the book date defaults to time().
	146	$book->setDate(time());
	147	$book->setSourceURL($this->wallabagUrl);
03690d13 TC	148
	149	$book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'PHP');
	150	$book->addDublinCoreMetadata(DublinCore::CONTRIBUTOR, 'wallabag');
	151
	152	/*
	153	* Front page
	154	*/
add597ba JB	155	if (file_exists($this->logoPath)) {
	156	$book->setCoverImage('Cover.png', file_get_contents($this->logoPath), 'image/png');
	157	}
03690d13	158
add597ba	159	$book->addChapter('Notices', 'Cover2.html', $content_start.$this->getExportInformation('PHPePub').$bookEnd);
03690d13 TC	160
	161	$book->buildTOC();
	162
	163	/*
	164	* Adding actual entries
	165	*/
	166
add597ba JB	167	// set tags as subjects
	168	foreach ($this->entries as $entry) {
	169	foreach ($this->tags as $tag) {
	170	$book->setSubject($tag['value']);
	171	}
03690d13 TC	172
	173	$chapter = $content_start.$entry->getContent().$bookEnd;
	174	$book->addChapter($entry->getTitle(), htmlspecialchars($entry->getTitle()).'.html', $chapter, true, EPub::EXTERNAL_REF_ADD);
	175	}
add597ba JB	176
	177	return Response::create(
	178	$book->getBook(),
	179	200,
	180	array(
	181	'Content-Description' => 'File Transfer',
	182	'Content-type' => 'application/epub+zip',
	183	'Content-Disposition' => 'attachment; filename="'.$this->title.'.epub"',
	184	'Content-Transfer-Encoding' => 'binary',
	185	)
	186	)->send();
03690d13 TC	187	}
03690d13 TC	188
add597ba JB	189	/**
	190	* Use PHPMobi to dump a .mobi file.
	191	*/
03690d13 TC	192	private function produceMobi()
	193	{
	194	$mobi = new \MOBI();
	195	$content = new \MOBIFile();
	196
	197	/*
	198	* Book metadata
	199	*/
03690d13 TC	200	$content->set('title', $this->title);
	201	$content->set('author', implode($this->authors));
	202	$content->set('subject', $this->title);
	203
	204	/*
	205	* Front page
	206	*/
add597ba JB	207	$content->appendParagraph($this->getExportInformation('PHPMobi'));
	208	if (file_exists($this->logoPath)) {
	209	$content->appendImage(imagecreatefrompng($this->logoPath));
	210	}
03690d13 TC	211	$content->appendPageBreak();
	212
	213	/*
	214	* Adding actual entries
	215	*/
03690d13 TC	216	foreach ($this->entries as $entry) {
	217	$content->appendChapterTitle($entry->getTitle());
	218	$content->appendParagraph($entry->getContent());
	219	$content->appendPageBreak();
	220	}
	221	$mobi->setContentProvider($content);
	222
	223	// the browser inside Kindle Devices doesn't likes special caracters either, we limit to A-z/0-9
	224	$this->title = preg_replace('/[^A-Za-z0-9\-]/', '', $this->title);
	225
add597ba JB	226	return Response::create(
	227	$mobi->toString(),
	228	200,
	229	array(
	230	'Accept-Ranges' => 'bytes',
	231	'Content-Description' => 'File Transfer',
	232	'Content-type' => 'application/x-mobipocket-ebook',
	233	'Content-Disposition' => 'attachment; filename="'.$this->title.'.mobi"',
	234	'Content-Transfer-Encoding' => 'binary',
	235	)
	236	)->send();
03690d13 TC	237	}
03690d13 TC	238
add597ba JB	239	/**
	240	* Use TCPDF to dump a .pdf file.
	241	*/
03690d13 TC	242	private function producePDF()
	243	{
	244	$pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
	245
	246	/*
	247	* Book metadata
	248	*/
03690d13 TC	249	$pdf->SetCreator(PDF_CREATOR);
	250	$pdf->SetAuthor('wallabag');
	251	$pdf->SetTitle($this->title);
	252	$pdf->SetSubject('Articles via wallabag');
	253	$pdf->SetKeywords('wallabag');
	254
	255	/*
	256	* Front page
	257	*/
03690d13	258	$pdf->AddPage();
add597ba	259	$intro = '<h1>'.$this->title.'</h1>'.$this->getExportInformation('tcpdf');
03690d13 TC	260
	261	$pdf->writeHTMLCell(0, 0, '', '', $intro, 0, 1, 0, true, '', true);
	262
	263	/*
	264	* Adding actual entries
	265	*/
03690d13 TC	266	foreach ($this->entries as $entry) {
	267	foreach ($this->tags as $tag) {
	268	$pdf->SetKeywords($tag['value']);
	269	}
	270
	271	$pdf->AddPage();
	272	$html = '<h1>'.$entry->getTitle().'</h1>';
	273	$html .= $entry->getContent();
add597ba	274
03690d13 TC	275	$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
	276	}
	277
	278	// set image scale factor
	279	$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
	280
add597ba JB	281	return Response::create(
	282	$pdf->Output('', 'S'),
	283	200,
	284	array(
	285	'Content-Description' => 'File Transfer',
	286	'Content-type' => 'application/pdf',
	287	'Content-Disposition' => 'attachment; filename="'.$this->title.'.pdf"',
	288	'Content-Transfer-Encoding' => 'binary',
	289	)
	290	)->send();
03690d13 TC	291	}
03690d13 TC	292
add597ba JB	293	/**
	294	* Inspired from CsvFileDumper.
	295	*/
03690d13 TC	296	private function produceCSV()
03690d13 TC	297	{
add597ba JB	298	$delimiter = ';';
	299	$enclosure = '"';
	300	$handle = fopen('php://memory', 'rb+');
03690d13	301
add597ba	302	fputcsv($handle, array('Title', 'URL', 'Content', 'Tags', 'MIME Type', 'Language'), $delimiter, $enclosure);
03690d13	303
03690d13	304	foreach ($this->entries as $entry) {
add597ba JB	305	fputcsv(
	306	$handle,
	307	array(
	308	$entry->getTitle(),
	309	$entry->getURL(),
cceca9ea JB	310	// remove new line to avoid crazy results
cceca9ea JB	311	str_replace(array("\r\n", "\r", "\n"), '', $entry->getContent()),
add597ba JB	312	implode(', ', $entry->getTags()->toArray()),
	313	$entry->getMimetype(),
	314	$entry->getLanguage(),
	315	),
	316	$delimiter,
	317	$enclosure
	318	);
	319	}
	320
	321	rewind($handle);
	322	$output = stream_get_contents($handle);
	323	fclose($handle);
	324
	325	return Response::create(
	326	$output,
	327	200,
	328	array(
	329	'Content-type' => 'application/csv',
	330	'Content-Disposition' => 'attachment; filename="'.$this->title.'.csv"',
	331	'Content-Transfer-Encoding' => 'UTF-8',
	332	)
	333	)->send();
	334	}
	335
b3cc1a14 TC	336	private function produceJSON()
b3cc1a14 TC	337	{
b3cc1a14	338	return Response::create(
8ac95cbf	339	$this->prepareSerializingContent('json'),
b3cc1a14 TC	340	200,
	341	array(
	342	'Content-type' => 'application/json',
	343	'Content-Disposition' => 'attachment; filename="'.$this->title.'.json"',
	344	'Content-Transfer-Encoding' => 'UTF-8',
	345	)
	346	)->send();
	347	}
	348
	349	private function produceXML()
	350	{
b3cc1a14	351	return Response::create(
8ac95cbf	352	$this->prepareSerializingContent('xml'),
b3cc1a14 TC	353	200,
	354	array(
	355	'Content-type' => 'application/xml',
	356	'Content-Disposition' => 'attachment; filename="'.$this->title.'.xml"',
	357	'Content-Transfer-Encoding' => 'UTF-8',
	358	)
	359	)->send();
	360	}
8ac95cbf	361
b3cc1a14 TC	362	/**
	363	* Return a Serializer object for producing processes that need it (JSON & XML).
	364	*
	365	* @return Serializer
	366	*/
8ac95cbf	367	private function prepareSerializingContent($format)
b3cc1a14	368	{
268e9e72	369	$serializer = SerializerBuilder::create()->build();
b3cc1a14	370
cceca9ea JB	371	return $serializer->serialize(
	372	$this->entries,
	373	$format,
	374	SerializationContext::create()->setGroups(array('entries_for_user'))
	375	);
b3cc1a14 TC	376	}
b3cc1a14 TC	377
add597ba JB	378	/**
	379	* Return a kind of footer / information for the epub.
	380	*
	381	* @param string $type Generator of the export, can be: tdpdf, PHPePub, PHPMobi
	382	*
	383	* @return string
	384	*/
	385	private function getExportInformation($type)
	386	{
	387	$info = str_replace('%EXPORT_METHOD%', $type, $this->footerTemplate);
	388
	389	if ('tcpdf' === $type) {
	390	return str_replace('%IMAGE%', '<img src="'.$this->logoPath.'" />', $info);
03690d13	391	}
add597ba JB	392
add597ba JB	393	return str_replace('%IMAGE%', '', $info);
03690d13 TC	394	}
03690d13 TC	395	}