Plugin to fix fb2 files

oviksna · 01-28-2013, 05:43 AM

Hello,

I wanted to use Calibre to manage books un FB2 format. Problem is that these books specify singe character encoding (windows-1251) in xml header, but uses lots of numeric (for example Ł) character encoding. Those characters are not displayed properly by my reader, so I wanted to convert fb2 books to UTF-8 encoding. To automate this process I created simple plugin for FB2 format, that checks if FB2 file needs conversion to UTF-8 and performs it when needed.

Problem. When importing FB2 file everything works OK. When importing zipped FB2 files, this plugin is not called, so conversion is not performed.

Question. How to write plugin for zipped FB2 files? Maybe this is bug in Calibre?

Thanks

kovidgoyal · 01-28-2013, 05:56 AM

Write a plugin for zip files. calibre already has a builtin plugin for zip files, you will need to disable that to get it to use your plugin.

oviksna · 01-28-2013, 06:54 AM

Can I see source of existing zip plugin? Tried to search Calibre source, but cannot find anything zip-related, only how resources are extracted from plugin zips.

Idea. In my opinion better idea would be to perform some plugin chaining, when output from one plugin could be processed by another. As zip is not a book, but container, why not process output by "normal" book plugins?

kovidgoyal · 01-28-2013, 08:53 AM

metadata/archive.py

01-28-2013, 05:43 AM	#1
oviksna Junior Member Posts: 2 Karma: 10 Join Date: Jan 2013 Device: PocketBook Pro 912	Plugin to fix fb2 files Hello, I wanted to use Calibre to manage books un FB2 format. Problem is that these books specify singe character encoding (windows-1251) in xml header, but uses lots of numeric (for example Ł) character encoding. Those characters are not displayed properly by my reader, so I wanted to convert fb2 books to UTF-8 encoding. To automate this process I created simple plugin for FB2 format, that checks if FB2 file needs conversion to UTF-8 and performs it when needed. Problem. When importing FB2 file everything works OK. When importing zipped FB2 files, this plugin is not called, so conversion is not performed. Question. How to write plugin for zipped FB2 files? Maybe this is bug in Calibre? Thanks

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01-28-2013, 05:56 AM	#2
kovidgoyal creator of calibre Posts: 43,856 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Write a plugin for zip files. calibre already has a builtin plugin for zip files, you will need to disable that to get it to use your plugin.

01-28-2013, 06:54 AM	#3
oviksna Junior Member Posts: 2 Karma: 10 Join Date: Jan 2013 Device: PocketBook Pro 912	Can I see source of existing zip plugin? Tried to search Calibre source, but cannot find anything zip-related, only how resources are extracted from plugin zips. Idea. In my opinion better idea would be to perform some plugin chaining, when output from one plugin could be processed by another. As zip is not a book, but container, why not process output by "normal" book plugins?

01-28-2013, 08:53 AM	#4
kovidgoyal creator of calibre Posts: 43,856 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	metadata/archive.py

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