ISBN scrapping out of pdf

pilx · 04-14-2010, 11:25 PM

Hi, all.

I'm wondering if there is some work done to scrap isbn out of pdf content.

I'm trying to get a big ebook collection in calibre but setting isbn by hand, one book at a time, would take more than a lifetime... so I thought of scrapping isbn from pdf content with some regex... I started to write a plugin for calibre but then thought of asking here if something like this wasn't already done or talked about before.

Anyone?

kovidgoyal · 04-14-2010, 11:32 PM

There isn't any existing work, but basically all you need to do is the following:

modify the pdf metadata reading code (in calibre.ebooks.metadata.pdf)

calibre contains a nice library for pdf reflow that converts pdf to xml use that and then search for the ISBN in the XML

Basically:

Code:

with CurrentDir(temp_dir):
     pdfreflow.reflow(stream.read())

will create index.xml in the current directory

pilx · 04-14-2010, 11:47 PM

Ok... I've just found tickets 3013 and 4113 in calibre's trac.

Too bad I haven't found a PDF on which the feature actually worked out.

I'm willing to help improve that code. If can find it first!

pilx · 04-14-2010, 11:51 PM

So the code mentioned in those tickets isn't there anymore?

Anyway, Kovid, thanks for the pointer, and for calibre by the way!

I'll try to go that way... and report back on my findings.

pilx · 04-15-2010, 12:58 AM

Where can I find the source or API documentation of pdfreflow?

kovidgoyal · 04-15-2010, 01:01 AM

see ebooks/pdf/main.cpp

04-14-2010, 11:25 PM	#1
pilx Junior Member Posts: 4 Karma: 10 Join Date: Apr 2010 Device: android	ISBN scrapping out of pdf Hi, all. I'm wondering if there is some work done to scrap isbn out of pdf content. I'm trying to get a big ebook collection in calibre but setting isbn by hand, one book at a time, would take more than a lifetime... so I thought of scrapping isbn from pdf content with some regex... I started to write a plugin for calibre but then thought of asking here if something like this wasn't already done or talked about before. Anyone?

04-14-2010, 11:32 PM	#2
kovidgoyal creator of calibre Posts: 43,851 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	There isn't any existing work, but basically all you need to do is the following: modify the pdf metadata reading code (in calibre.ebooks.metadata.pdf) calibre contains a nice library for pdf reflow that converts pdf to xml use that and then search for the ISBN in the XML Basically: Code: with CurrentDir(temp_dir): pdfreflow.reflow(stream.read()) will create index.xml in the current directory

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04-14-2010, 11:47 PM	#3
pilx Junior Member Posts: 4 Karma: 10 Join Date: Apr 2010 Device: android	Ok... I've just found tickets 3013 and 4113 in calibre's trac. Too bad I haven't found a PDF on which the feature actually worked out. I'm willing to help improve that code. If can find it first!

04-14-2010, 11:51 PM	#4
pilx Junior Member Posts: 4 Karma: 10 Join Date: Apr 2010 Device: android	So the code mentioned in those tickets isn't there anymore? Anyway, Kovid, thanks for the pointer, and for calibre by the way! I'll try to go that way... and report back on my findings.

04-15-2010, 12:58 AM	#5
pilx Junior Member Posts: 4 Karma: 10 Join Date: Apr 2010 Device: android	Where can I find the source or API documentation of pdfreflow?

04-15-2010, 01:01 AM	#6
kovidgoyal creator of calibre Posts: 43,851 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	see ebooks/pdf/main.cpp

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