How can I force Calibre to add formats that are added manually to the respective f?

[loviedovie]

Hi

I created a script that converts pdf files to djvu files and copies them to their respective folders. It is all fine but is there a way to get Calibre to ad those dangling files to the proper book database ?


The djvu files are in the same folder as the original pdf files.


thanks

[kovidgoyal]

http://manual.calibre-ebook.com/cli/calibredb.html

[loviedovie]

@kovidgoyal

Thanks for the pointers. looked at the available possiblities and it might work out however I think I am missing one crucial information. I need a way to pass an id to calibredb and get the actual path of the book.

It is a bit convoluted to me. I have djvu files named exactly same as the pdf except that it has a djvu extension. So in this respect do you have a recommendation for me to go for as far as the scripting logic goes?


thanks

[kovidgoyal]

The ids are part of the folder names, you can easily parse them out from there.

[loviedovie]

Originally Posted by kovidgoyal

The ids are part of the folder names, you can easily parse them out from there.

Hi

Is the ID the folder name or the number which comes up when I use list command?

[itimpi]

Originally Posted by loviedovie

Hi

Is the ID the folder name or the number which comes up when I use list command?

The number in brackets in the folder name should be the same as the value that is given by the list command

[kovidgoyal]

And you can use

calibredb list -f formats --for-machine --search=id:book_id

to get the path of all ebook files for a book in JSON format given the book id

[loviedovie]

thanks for your help, I guess I have to move to Python from Bash to wrap this up.

[theducks]

Originally Posted by loviedovie

thanks for your help, I guess I have to move to Python from Bash to wrap this up.

Python??
That is a commandline

[loviedovie]

Originally Posted by theducks

Python??
That is a commandline

Well, not sure how I can parse JSON with Bash so I have to make it a .py script.

[BetterRed]

Originally Posted by loviedovie

Well, not sure how I can parse JSON with Bash so I have to make it a .py script.

@loviedovie - maybe you could extract the book id from the book folders where the djvu's are located, or perhaps move the djvu files to another folder en-masse, and then use Add books from a single directory with the Automerge setting checked in Preferences->Add books->The Add Process

BR

[loviedovie]

Originally Posted by BetterRed

@loviedovie or perhaps move the djvu files to another folder en-masse, and then use Add books from a single directory with the Automerge setting checked in Preferences->Add books->The Add Process

BR

Good idea but it does not work ;( I wonder maybe it is because most of the files have file names with spaces? This idea should work because the name of the djvu file is exactly the same except the extension.


Here is a djvu
"The artistic anatomy of trees, their struc - Cole, Rex Vicat, b. 1870.djvu"

and the pdf
"The artistic anatomy of trees, their struc - Cole, Rex Vicat, b. 1870.pdf"

I was thinking that maybe the regex was failing but I did the test and the regex in the add settings seems to catch stuff properly based on the example above. Calibre has the exact records for it based on the regex splitting. Peculiar.

Btw the reason I am going for Djvu because scanned Pdfs are painfully slow and I find Djvu to be much faster format both on mobile and desktop.

[BetterRed]

Originally Posted by loviedovie

Good idea but it does not work ;( I wonder maybe it is because most of the files have file names with spaces? This idea should work because the name of the djvu file is exactly the same except the extension.


Here is a djvu
"The artistic anatomy of trees, their struc - Cole, Rex Vicat, b. 1870.djvu"

and the pdf
"The artistic anatomy of trees, their struc - Cole, Rex Vicat, b. 1870.pdf"

Btw the reason I am going for Djvu because scanned Pdfs are painfully slow and I find Djvu to be much faster format both on mobile and desktop.

@loviedovie - I think you'll need use the 'get metadata from file name' setting, with the an appropriate regex, this one should work - (?P<title>[^_]+) - (?P<author>.+) - should be in the drop down list. I did something similar a long time ago, as I recall it worked fine.

If there aren't too many you could just open each book folder - press 'O' - then drag 'n' drop the djvu file onto the book details. I do it every day with a dozen or so PRC files converted from PDF's with mobi creator.

BR

[loviedovie]

BetterRed

Thanks for the suggestions. I have 375 Djvu files and more will be on the way later. I also used the same regex as the one you gave. I wonder if this has more of an issue with the Caibre's djvu format treatment.

[BetterRed]

Originally Posted by loviedovie

I wonder if this has more of an issue with the Caibre's djvu format treatment.

@loviedovie - Maybe - I've never had any dvju format files.

But I suspect the problem is that the file name contains 'truncated' titles as in - "The artistic anatomy of trees, their struc" whereas the title in the metadata is presumably "The artistic anatomy of trees, their structure & treatment in painting".

I'm not sure what constitutes a 'duplicate' in the Add process. What happens if the title & author are not truncated in the file name, e.g - "Some Title - Some Author.djvu"

BR