E-books and App::Pod2Epub
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A lightning talk about e-book readers, formats and one way to create your own e-books in epub format.
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E-books and App::Pod2Epub
- 1. Cph.pm Lightn. Talks 2010-10-26 E-books and App::Pod2Epub Søren Lund (slu) soren@lund.org
- 2. E-book readers Based on E-Ink technology http://en.wikipedia.org/wiki/Electronic_paper Usually 5” or 6” screen size http://www.the-ebook-reader.com/ebook-reader-comparison.html Ergonomics and build quality varies Speed and memory options are important Software (GUI) difference Some support few others many formats http://en.wikipedia.org/wiki/Comparison_of_e-book_formats
- 3. BeBook Neo 6” Good build quality and sleek looking Fast 532 Mhz Freescale processor Wifi and Wacom touchpanel (stylus) No sleve or cover Expensive (DKK 2895,-)
- 4. E-book formats O'Reilly supports four primary formats http://oreilly.com/ And Pragmatic Programmers kinda agrees http://pragprog.com/ PDF (for your computer) mobi (for Kindle, etc) APK (for Android devices) ePub (for iPhone, iPad, Sony, etc)
- 5. The wellknown: PDF Tagged PDF's can be reflowed http://broadcast.oreilly.com/2010/01/inside-the-e-book-wars-pdf-ref.html But not all PDF's are tagged Big (typically 2-4 times bigger than the other formats) Good on your computer, nice for printing Borrow for free (8 days => DRM) on Ebib.dk http://elibrary.ebib.dk/
- 6. For specific devices mobi http://en.wikipedia.org/wiki/Mobipocket Various devices including the original Kindle Free reader for Windows can be run on Linux using Wine. Borrow for free (28 days => DRM) http://ebogsbibliotek.dk/ APK – for Android (haven't got one) http://en.wikipedia.org/wiki/APK_%28file_format%29
- 7. My favorite: ePub Free and open e-book standard http://en.wikipedia.org/wiki/EPUB Reflowable and resizable text It's just a ZIP archive with .epub extension Contents is mainly (X)HTML Support for styling (CSS)
- 8. It's just a zip + (x)html slu@rabota:~/Downloads$ unzip t Perl_Cookbook_Second_Edition.epub Archive: Perl_Cookbook_Second_Edition.epub testing: mimetype OK testing: METAINF/container.xml OK testing: OEBPS/ch04s14.html OK ... testing: OEBPS/tagoreillycom20090202oreillyimages251830.gif OK ... testing: OEBPS/ch07s20.html OK testing: OEBPS/ch10s07.html OK No errors detected in compressed data of Perl_Cookbook_Second_Edition.epub. slu@rabota:~/Downloads$
- 9. Extracting text is simple slu@rabota:~/Downloads$ unzip p Perl_Cookbook_Second_Edition.epub > OEBPS/ch10s07.html|head n3 <?xml version="1.0" encoding="UTF8" standalone="no"?> <!DOCTYPE html PUBLIC "//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><title>10.6. Detecting Return Context</title><link rel="stylesheet" href="core.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.74.0"/></head><body><div class="sect1" title="10.6. Detecting Return Context"><div class="titlepage"><div><div><h1 class="title"><a id="perlckbk2CHP10SECT 6"/>10.6. Detecting Return Context</h1></div></div></div><div class="sect2" title="Problem"><div class="titlepage"><div><div><h2 class="title"><a id="perlckbk2CHP10SECT6.1"/>Problem</h2></div></div></div><p><a id="perlckbk2CHP10ITERM4546" class="indexterm"/> <a id="perlckbk2CHP10 ITERM4547" class="indexterm"/> <a id="perlckbk2CHP10ITERM4548" class="indexterm"/> <a id="perlckbk2CHP10ITERM4549" class="indexterm"/>You want to know in which context your function was slu@rabota:~/Downloads$
- 10. Creating e-books Creating a ZIP archive is easy Generating HTML is easy From what source format? … Search on CPAN is even easier!
- 11. App::Pod2Epub Installing cpan App::Pod2Epub Depends on Pod::Simple::XHTML (might need to install) EBook::EPUB XML::Writer Now you can write pod2epub /usr/.../pod/perlfunc.pod o perlfunc.epub
- 12. Final thoughts Some documentation is split in several pods (e.g. Moose::Cookbook) pod2epub only handles one at a time Need to look into EBook::EPUB CPAN is your friend Slides available at slideshare http://www.slideshare.net/slu