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|
<?php
namespace Wallabag\CoreBundle\Helper;
use Html2Text\Html2Text;
use JMS\Serializer\SerializationContext;
use JMS\Serializer\SerializerBuilder;
use PHPePub\Core\EPub;
use PHPePub\Core\Structure\OPF\DublinCore;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Translation\TranslatorInterface;
use Wallabag\CoreBundle\Entity\Entry;
/**
* 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 $translator;
private $title = '';
private $entries = [];
private $author = 'wallabag';
private $language = '';
/**
* @param TranslatorInterface $translator Translator service
* @param string $wallabagUrl Wallabag instance url
* @param string $logoPath Path to the logo FROM THE BUNDLE SCOPE
*/
public function __construct(TranslatorInterface $translator, $wallabagUrl, $logoPath)
{
$this->translator = $translator;
$this->wallabagUrl = $wallabagUrl;
$this->logoPath = $logoPath;
}
/**
* Define entries.
*
* @param array|Entry $entries An array of entries or one entry
*
* @return EntriesExport
*/
public function setEntries($entries)
{
if (!\is_array($entries)) {
$this->language = $entries->getLanguage();
$entries = [$entries];
}
$this->entries = $entries;
return $this;
}
/**
* Sets the category of which we want to get articles, or just one entry.
*
* @param string $method Method to get articles
*
* @return EntriesExport
*/
public function updateTitle($method)
{
$this->title = $method . ' articles';
if ('entry' === $method) {
$this->title = $this->entries[0]->getTitle();
}
return $this;
}
/**
* Sets the author for one entry or category.
*
* The publishers are used, or the domain name if empty.
*
* @param string $method Method to get articles
*
* @return EntriesExport
*/
public function updateAuthor($method)
{
if ('entry' !== $method) {
$this->author = 'Various authors';
return $this;
}
$this->author = $this->entries[0]->getDomainName();
$publishedBy = $this->entries[0]->getPublishedBy();
if (!empty($publishedBy)) {
$this->author = implode(', ', $publishedBy);
}
return $this;
}
/**
* Sets the output format.
*
* @param string $format
*
* @return Response
*/
public function exportAs($format)
{
$functionName = 'produce' . ucfirst($format);
if (method_exists($this, $functionName)) {
return $this->$functionName();
}
throw new \InvalidArgumentException(sprintf('The format "%s" is not yet supported.', $format));
}
public function exportJsonData()
{
return $this->prepareSerializingContent('json');
}
/**
* Use PHPePub to dump a .epub file.
*
* @return Response
*/
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);
// 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');
$book->setAuthor($this->author, $this->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');
$entryIds = [];
$entryCount = \count($this->entries);
$i = 0;
/*
* Adding actual entries
*/
// set tags as subjects
foreach ($this->entries as $entry) {
++$i;
/*
* Front page
* Set if there's only one entry in the given set
*/
if (1 === $entryCount && null !== $entry->getPreviewPicture()) {
$book->setCoverImage($entry->getPreviewPicture());
}
foreach ($entry->getTags() as $tag) {
$book->setSubject($tag->getLabel());
}
$filename = sha1(sprintf('%s:%s', $entry->getUrl(), $entry->getTitle()));
$publishedBy = $entry->getPublishedBy();
$authors = $this->translator->trans('export.unknown');
if (!empty($publishedBy)) {
$authors = implode(',', $publishedBy);
}
$titlepage = $content_start .
'<h1>' . $entry->getTitle() . '</h1>' .
'<dl>' .
'<dt>' . $this->translator->trans('entry.view.published_by') . '</dt><dd>' . $authors . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.reading_time') . '</dt><dd>' . $this->translator->trans('entry.metadata.reading_time_minutes_short', ['%readingTime%' => $entry->getReadingTime()]) . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.added_on') . '</dt><dd>' . $entry->getCreatedAt()->format('Y-m-d') . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.address') . '</dt><dd><a href="' . $entry->getUrl() . '">' . $entry->getUrl() . '</a></dd>' .
'</dl>' .
$bookEnd;
$book->addChapter("Entry {$i} of {$entryCount}", "{$filename}_cover.html", $titlepage, true, EPub::EXTERNAL_REF_ADD);
$chapter = $content_start . $entry->getContent() . $bookEnd;
$entryIds[] = $entry->getId();
$book->addChapter($entry->getTitle(), "{$filename}.html", $chapter, true, EPub::EXTERNAL_REF_ADD);
}
$book->addChapter('Notices', 'Cover2.html', $content_start . $this->getExportInformation('PHPePub') . $bookEnd);
// Could also be the ISBN number, prefered for published books, or a UUID.
$hash = sha1(sprintf('%s:%s', $this->wallabagUrl, implode(',', $entryIds)));
$book->setIdentifier(sprintf('urn:wallabag:%s', $hash), EPub::IDENTIFIER_URI);
return Response::create(
$book->getBook(),
200,
[
'Content-Description' => 'File Transfer',
'Content-type' => 'application/epub+zip',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.epub"',
'Content-Transfer-Encoding' => 'binary',
]
);
}
/**
* Use PHPMobi to dump a .mobi file.
*
* @return Response
*/
private function produceMobi()
{
$mobi = new \MOBI();
$content = new \MOBIFile();
/*
* Book metadata
*/
$content->set('title', $this->title);
$content->set('author', $this->author);
$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);
return Response::create(
$mobi->toString(),
200,
[
'Accept-Ranges' => 'bytes',
'Content-Description' => 'File Transfer',
'Content-type' => 'application/x-mobipocket-ebook',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.mobi"',
'Content-Transfer-Encoding' => 'binary',
]
);
}
/**
* Use TCPDF to dump a .pdf file.
*
* @return Response
*/
private function producePdf()
{
$pdf = new \TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
/*
* Book metadata
*/
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor($this->author);
$pdf->SetTitle($this->title);
$pdf->SetSubject('Articles via wallabag');
$pdf->SetKeywords('wallabag');
/*
* Adding actual entries
*/
foreach ($this->entries as $entry) {
foreach ($entry->getTags() as $tag) {
$pdf->SetKeywords($tag->getLabel());
}
$publishedBy = $entry->getPublishedBy();
$authors = $this->translator->trans('export.unknown');
if (!empty($publishedBy)) {
$authors = implode(',', $publishedBy);
}
$pdf->addPage();
$html = '<h1>' . $entry->getTitle() . '</h1>' .
'<dl>' .
'<dt>' . $this->translator->trans('entry.view.published_by') . '</dt><dd>' . $authors . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.reading_time') . '</dt><dd>' . $this->translator->trans('entry.metadata.reading_time_minutes_short', ['%readingTime%' => $entry->getReadingTime()]) . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.added_on') . '</dt><dd>' . $entry->getCreatedAt()->format('Y-m-d') . '</dd>' .
'<dt>' . $this->translator->trans('entry.metadata.address') . '</dt><dd><a href="' . $entry->getUrl() . '">' . $entry->getUrl() . '</a></dd>' .
'</dl>';
$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
$pdf->AddPage();
$html = '<h1>' . $entry->getTitle() . '</h1>';
$html .= $entry->getContent();
$pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);
}
/*
* Last page
*/
$pdf->AddPage();
$html = $this->getExportInformation('tcpdf');
$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,
[
'Content-Description' => 'File Transfer',
'Content-type' => 'application/pdf',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.pdf"',
'Content-Transfer-Encoding' => 'binary',
]
);
}
/**
* Inspired from CsvFileDumper.
*
* @return Response
*/
private function produceCsv()
{
$delimiter = ';';
$enclosure = '"';
$handle = fopen('php://memory', 'b+r');
fputcsv($handle, ['Title', 'URL', 'Content', 'Tags', 'MIME Type', 'Language', 'Creation date'], $delimiter, $enclosure);
foreach ($this->entries as $entry) {
fputcsv(
$handle,
[
$entry->getTitle(),
$entry->getURL(),
// remove new line to avoid crazy results
str_replace(["\r\n", "\r", "\n"], '', $entry->getContent()),
implode(', ', $entry->getTags()->toArray()),
$entry->getMimetype(),
$entry->getLanguage(),
$entry->getCreatedAt()->format('d/m/Y h:i:s'),
],
$delimiter,
$enclosure
);
}
rewind($handle);
$output = stream_get_contents($handle);
fclose($handle);
return Response::create(
$output,
200,
[
'Content-type' => 'application/csv',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.csv"',
'Content-Transfer-Encoding' => 'UTF-8',
]
);
}
/**
* Dump a JSON file.
*
* @return Response
*/
private function produceJson()
{
return Response::create(
$this->prepareSerializingContent('json'),
200,
[
'Content-type' => 'application/json',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.json"',
'Content-Transfer-Encoding' => 'UTF-8',
]
);
}
/**
* Dump a XML file.
*
* @return Response
*/
private function produceXml()
{
return Response::create(
$this->prepareSerializingContent('xml'),
200,
[
'Content-type' => 'application/xml',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.xml"',
'Content-Transfer-Encoding' => 'UTF-8',
]
);
}
/**
* Dump a TXT file.
*
* @return Response
*/
private function produceTxt()
{
$content = '';
$bar = str_repeat('=', 100);
foreach ($this->entries as $entry) {
$content .= "\n\n" . $bar . "\n\n" . $entry->getTitle() . "\n\n" . $bar . "\n\n";
$html = new Html2Text($entry->getContent(), ['do_links' => 'none', 'width' => 100]);
$content .= $html->getText();
}
return Response::create(
$content,
200,
[
'Content-type' => 'text/plain',
'Content-Disposition' => 'attachment; filename="' . $this->getSanitizedFilename() . '.txt"',
'Content-Transfer-Encoding' => 'UTF-8',
]
);
}
/**
* Return a Serializer object for producing processes that need it (JSON & XML).
*
* @param string $format
*
* @return string
*/
private function prepareSerializingContent($format)
{
$serializer = SerializerBuilder::create()->build();
return $serializer->serialize(
$this->entries,
$format,
SerializationContext::create()->setGroups(['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 = $this->translator->trans('export.footer_template', [
'%method%' => $type,
]);
if ('tcpdf' === $type) {
return str_replace('%IMAGE%', '<img src="' . $this->logoPath . '" />', $info);
}
return str_replace('%IMAGE%', '', $info);
}
/**
* Return a sanitized version of the title by applying translit iconv
* and removing non alphanumeric characters, - and space.
*
* @return string Sanitized filename
*/
private function getSanitizedFilename()
{
return preg_replace('/[^A-Za-z0-9\- \']/', '', iconv('utf-8', 'us-ascii//TRANSLIT', $this->title));
}
}
|
