Bug 728749

Created attachment 517028 [details]
File: backtrace

This is the output I see in Calibre:

Unknown codepage 235802126. Assuming 
Unknown codepage 235802126. Assuming 
Traceback (most recent call last):
  File "/usr/bin/calibre-parallel", line 19, in <module>
    sys.exit(main())
  File "/usr/lib64/calibre/calibre/utils/ipc/worker.py", line 106, in main
    result = func(*args, **kwargs)
  File "/usr/lib64/calibre/calibre/gui2/convert/gui_conversion.py", line 24, in gui_convert
    plumber.run()
  File "/usr/lib64/calibre/calibre/ebooks/conversion/plumber.py", line 853, in run
    accelerators, tdir)
  File "/usr/lib64/calibre/calibre/customize/conversion.py", line 216, in __call__
    log, accelerators)
  File "/usr/lib64/calibre/calibre/ebooks/mobi/input.py", line 27, in convert
    options.debug_pipeline, try_extra_data_fix=True)
  File "/usr/lib64/calibre/calibre/ebooks/mobi/reader.py", line 295, in __init__
    user_encoding, self.log, try_extra_data_fix=try_extra_data_fix)
  File "/usr/lib64/calibre/calibre/ebooks/mobi/reader.py", line 168, in __init__
    self.title = self.title.decode(self.codec, 'replace')
LookupError: unknown encoding: 

Looking briefly at the code, the message about the unknown codepage comes from reader.py, line 143. The block looks like this:


            try:
                self.codec = {
                    1252: 'cp1252',
                    65001: 'utf-8',
                    }[self.codepage]
            except (IndexError, KeyError):
                self.codec = 'cp1252' if user_encoding is None else user_encoding
                log.warn('Unknown codepage %d. Assuming %s' % (self.codepage,
                    self.codec))

So for some reason user_encoding is empty, so self.codec is set to be empty, but when this empty value is passed to the unicode decode method on the title, it causes a crash.

Can you try the newer version in my calibre side repo? 

su
cd /etc/yum.repos.d/
wget http://repos.fedorapeople.org/repos/kevin/calibre/fedora-calibre.repo
yum clean all
yum update calibre

This is unfortunately not the latest upstream as f14 has several components now that are too old for newer calibre versions. :(

(In reply to comment #3)
> Can you try the newer version in my calibre side repo? 
> 
> su
> cd /etc/yum.repos.d/
> wget http://repos.fedorapeople.org/repos/kevin/calibre/fedora-calibre.repo
> yum clean all
> yum update calibre
> 
> This is unfortunately not the latest upstream as f14 has several components now
> that are too old for newer calibre versions. :(

Tested this new version of Calibre, it fixes the problem. I was able to convert a PRC file to MOBI without error.

ok, good to know. Will see if it's worth a f14 update.

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