[GUI Plugin] LibraryThing Match

[Wiggo]

Originally Posted by Bradles

I've uploaded a new version which fixes the 403 Forbidden error. As I suspected, Cloudflare was blocking the request due to the user agent, so it was simply a matter of adding a header to the request.

calibre should recognize there's an updated version in the fullness of time.

Error is back

[Bradles]

Thanks for bringing that to my attention Wiggo. It seems the user agent needed to be changed again. I've uploaded a new version that should fix the error. If not, let me know...

[Wiggo]

Works again.

Thank you so much, Bradles!

[tlwright]

Not sure if it's from the update or an older version but I'm unable to load my LT books to match in Calibre. Gives me an error

" JSONDecodeError('Expecting value: line 1 column 1 (char 0)')

I went to make sure my username was correct and I was signed into the site. I have my settings as a screenshot if that helps.

[Bradles]

Originally Posted by tlwright

JSONDecodeError

Some possibilities with this error:

• Max results is not filled in.
• Your config file is empty or corrupt. Physically check the file in the calibre config file location, which for me is

  C:\Users\(username)\AppData\Roaming\calibre\plugins

• There's a non-printing character in a book title. try changing to the "sample" library (user: sample, collection empty and taglist empty) and doing a test connection

If no luck I'll look into it further.

[tlwright]

Sorry it took me so long to reply, I hadn't opened calibre in a week, and didn't remember to check here earlier.

{
  "librarything_coll": "All collections",
  "librarything_id_column": "#librarything_id",
  "librarything_key": "not required",
  "librarything_rating_column": "#librarything_rating",
  "librarything_sort": "author,title",
  "librarything_taglist": "",
  "librarything_user": "tlwright",
  "max_results": "100",
  "probable_match_threshold": "90",
  "use_calibre_identifier": true
}

is the contents of my file, and I've attached a screenshot of the error message plus what it looks like after I click the LT match icon in my toolbar.

[Bradles]

tlwright:

I strongly suspect that the issue is weird characters in one or more book titles or author fields in LT. For example, you have this book in your collection:



Note that foreign language characters (Unicode) and accents (ë, õ, â, etc.) should be fine.

The method I am using to retrieve your LT books is "all or nothing". I either get all the books or nothing at all, so I can't "check" the books for errors before displaying.

I was able to retrieve your books using the tag Cooking, so there's nothing wrong with your configuration or library.

I'll reach out to the calibre "Development" forum and see if there's any way to improve the situation.

In the meantime, if you're really set on using LT Match, you could check your LT catalog for weird characters in the title or author fields. Exporting your catalog to Excel might be the easiest way to do this.

[tlwright]

It looks like I need to do a little cleanup in my library, lol. Thank you! I'll do some housekeeping, and see if that fixes the issue. LT did some funky things to a previous GR import, so that may be the cause.

[Bradles]

Yeah, you're not the first user to face this issue...

I did some more research and found that LibraryThing returns no results if any book in the result set has corrupt data. The response code is 200 (OK) but 0 bytes are returned to LT Match and that's why I'm getting an error trying to interpret 0 bytes as if it was data. I can handle this scenario better in terms of showing a more informative error message, but that doesn't help you much.

I've reached out to the LibraryThing developers, to see if the situation can be improved from their end. I'm not expecting to hear back until after the holiday weekend.

Stay tuned...