[GUI Plugin] Kobo Utilities

[DNSB]

I was tempted to do another edit but with 7.26.104 running from source, the error when ejecting a Kobo no longer occurs. Looking at the source for the Kobo driver.py file, it appears to be due to changes in the def device_version_info section now handling None properly.

[p@perm0nk]

Originally Posted by Majutsushi

Time Spent Reading / Rest of Book Estimate formatting

If you want to show the "Time Spent Reading" and "Rest of Book Estimate" values in anything other than seconds, you will have to create two new columns that are based on the "seconds" columns and format the value differently.

Here is how you can do this:

• Open the Calibre preferences.
• Click on "Add your own columns".
• Click on "Add custom column" or the green "+" sign on the right.
• Enter a lookup name, like "#my_time_spent_reading".
• Enter a column heading, like "Time Spent Reading".
• For column type, choose "Column built from other columns".
• Right-click in the "Template" entry field and click "Open template editor".
• Enter the code to format the seconds to something else.
  
  Here is an example:
  

  program:
  
  total = $#kobo_time_spent_reading;
  hours = floor(total/3600);
  minutes = round((total-hours*3600)/60);
  
  def format(v, str):
      if v == 0 then return '' fi;
      return v & ' ' & str & ' '
  fed;
  format(hours, 'hr') & format(minutes, 'min')

  This will format the time as something like "3 hr 27 min".
  
  Make sure to replace "#kobo_time_spent_reading" with the actual lookup name of the seconds column you want to reference.
• Press "OK"/"Apply" to close all the dialogs and restart Calibre.

For more information about writing such a template check out https://manual.calibre-ebook.com/template_lang.html.

I have a stupid question. So, I created a custom column using this code and I have my Kobo Clara BW device connected. However, I cannot see any values for the books that I have finished reading. How are those values (total time spent reading a book) populated? Like automatically or do I need to do something else?

[p@perm0nk]

Originally Posted by p@perm0nk

I have a stupid question. So, I created a custom column using this code and I have my Kobo Clara BW device connected. However, I cannot see any values for the books that I have finished reading. How are those values (total time spent reading a book) populated? Like automatically or do I need to do something else?

Never mind. I found the answer from here: https://www.mobileread.com/forums/sh...9&postcount=28 and now I can see the stats )

[Majutsushi]

Originally Posted by DNSB

I was tempted to do another edit but with 7.26.104 running from source, the error when ejecting a Kobo no longer occurs. Looking at the source for the Kobo driver.py file, it appears to be due to changes in the def device_version_info section now handling None properly.

Thanks for the investigation. This does look like it was a bug in the driver, since the only thing the plugin is doing is calling a driver function. I'm glad it seems to be fixed now.

I have no idea about the garbage in the config file, please let me know if you find anything reproducible.

[Majutsushi]

Originally Posted by p@perm0nk

Never mind. I found the answer from here: https://www.mobileread.com/forums/sh...9&postcount=28 and now I can see the stats )

Note that you can also set this to be done automatically by going to "Calibre Preferences" -> "Sending books to devices" and setting the metadata management to "Automatic management". I'll make a not to add this to the plugin docs.

[DNSB]

Originally Posted by Majutsushi

Thanks for the investigation. This does look like it was a bug in the driver, since the only thing the plugin is doing is calling a driver function. I'm glad it seems to be fixed now.

The driver function was not happy with being passed a None in the version that errored. Earlier versions and the current version had code that did not allow None to pass through.

Originally Posted by Majutsushi

I have no idea about the garbage in the config file, please let me know if you find anything reproducible.

I reverted to the saved file with the garbage at the end and it seemed to make no difference to 7.26.104. So ghod alone knows when it was added. As to why it seems to work once when I rebuilt the config file? There are some answers the minds of mere mortals are not meant to know.

[Majutsushi]

Originally Posted by DNSB

The driver function was not happy with being passed a None in the version that errored. Earlier versions and the current version had code that did not allow None to pass through.

The odd thing is that the plugin wasn't actually passing anything to the function, the function didn't take any parameters until the fix. So wherever the None came from it wasn't the plugin.

[DNSB]

Actually, the None did come from the plugin. I lifted the line numbers from the error message and at line 2665 in action.py, the following is seen:

version_info = None
device_version_info = device.device_version_info()
if device_version_info is not None:

version_info is set to None and then the device.version.info() in device.py is invoked. The first code block is for the older version that failed in 7.26.103, the second is the modified code in 7.26.104

    def device_version_info(self):
        debug_print('device_version_info - start')
        if not self._device_version_info:
            version_file = os.path.join(self._main_prefix, KOBO_ROOT_DIR_NAME, 'version')

    def device_version_info(self, reload: bool = False):
        debug_print('device_version_info - start')
        if self._device_version_info is None or reload:
            self._device_version_info = []
            version_file = os.path.join(self._main_prefix, KOBO_ROOT_DIR_NAME, 'version')