MobileRead Forums - View Single Post - I need a little help to understand Calibre's conversion

julenuri · 03-30-2024, 11:14 AM

Hello Calibre people:

At first, let's say that I am not developer, I know nothing about code.

I am researching to fix a bug under ReactOS that involves one function that Calibre uses to convert bugs (I know it is an unsupported function since python 3.y.z , ok, but I want to fix this to fix all of the subsequent affected versions). It's the cPickle from python under the utils/ipc.

The point is that I don't understand where the failure starts, because the Calibre bug only points to a code that if I try to do a print(function), actually is showing activity.

Code:

    
    address = cPickle.loads(unhexlify(os.environ['CALIBRE_WORKER_ADDRESS']))
    key     = unhexlify(os.environ['CALIBRE_WORKER_KEY'])
    resultf = unhexlify(os.environ['CALIBRE_WORKER_RESULT']).decode('utf-8')
    with closing(Client(address, authkey=key)) as conn:
        name, args, kwargs, desc = eintr_retry_call(conn.recv)

It's like the pickle file that is generated is empty. So... I need to find what it does before, or what python function it uses to reach this to create a little demo that helps to find where ReactOS is failing.

Thanks you in advance.

03-30-2024, 11:14 AM	#1
julenuri Junior Member Posts: 3 Karma: 10 Join Date: Sep 2020 Device: Kindle 2 and Sony DPC	I need a little help to understand Calibre's conversion - cpickle Hello Calibre people: At first, let's say that I am not developer, I know nothing about code. I am researching to fix a bug under ReactOS that involves one function that Calibre uses to convert bugs (I know it is an unsupported function since python 3.y.z , ok, but I want to fix this to fix all of the subsequent affected versions). It's the cPickle from python under the utils/ipc. The point is that I don't understand where the failure starts, because the Calibre bug only points to a code that if I try to do a print(function), actually is showing activity. Code: address = cPickle.loads(unhexlify(os.environ['CALIBRE_WORKER_ADDRESS'])) key = unhexlify(os.environ['CALIBRE_WORKER_KEY']) resultf = unhexlify(os.environ['CALIBRE_WORKER_RESULT']).decode('utf-8') with closing(Client(address, authkey=key)) as conn: name, args, kwargs, desc = eintr_retry_call(conn.recv) It's like the pickle file that is generated is empty. So... I need to find what it does before, or what python function it uses to reach this to create a little demo that helps to find where ReactOS is failing. Thanks you in advance.