Batch correct fixable errors

[Georgy]

Hi,

I have a problem with fixing a lot of epub files. All files I have can be correctly fixed by Ebook Editor via command "Try to correct all fixable errors automatically". But the amount of files is quite big to do this for each file.

I can't find corresponding command line tool to do this operation.

Can you tell me, how to do this?

[eschwartz]

There is no command-line tool to do this (as of now). ebook-edit is an interactive tool, although you can use macros (function replace, plugins) from within the editor, you cannot open and edit books via a script in an entirely non-interactive way.

[kovidgoyal]

If you know how to program it should not be hard to wite a script that uses the check book infrastructure to auto-fix correctable errors and run it via calibre-debug

Something as simple as

from calibre.ebooks.oeb.polish.check.main import run_checks, fix_errors
from calibre.ebooks.oeb.polish.container import get_container

import sys
filepath = sys.argv[-1]
container = get_container(filepath, tweak_mode=True)
errors = run_checks(container)
if errors:
    print ('Found errors, trying to fix them')
    if fix_errors(container, errors):
        container.commit()

[Georgy]

Originally Posted by kovidgoyal

If you know how to program it should not be hard to wite a script that uses the check book infrastructure to auto-fix correctable errors and run it via calibre-debug

Something as simple as

from calibre.ebooks.oeb.polish.check.main import run_checks, fix_errors
from calibre.ebooks.oeb.polish.container import get_container

import sys
filepath = sys.argv[-1]
container = get_container(filepath, tweak_mode=True)
errors = run_checks(container)
if errors:
    print ('Found errors, trying to fix them')
    if fix_errors(container, errors):
        container.commit()

Thanks eschwartz, thanks kovidgoyal!

It is very useful information for me! I'm familiar with python, but not familiar with Calibre yet. Can you help me, or give me a link, that can explain, how to run this script in Calibre? Such a quick start to scripting.

Thanks again,
Georgy

[kovidgoyal]

Copy paste the code into myscript.py, run

calibre-debug myscript.py -- file.epub

[Georgy]

Dear Kovid!

I see, calibre-debug is very fine, simple and pretty documented. So, it seems, I'm able to run the script and it works! I will write, if some problems occurs.

Thank you very much!

[Georgy]

This is script I use for fixing multiple files or all epubs in folder. For sb's sake.

Usage:
calibre-debug batchfix.py -- <file or folder 1> <file or folder 2> ...

batchfix.py:

from calibre.ebooks.oeb.polish.check.main import run_checks, fix_errors
from calibre.ebooks.oeb.polish.container import get_container

from os import listdir
from os.path import isfile, join, isdir

def fix_file(filepath) :
    try :
        container = get_container(filepath, tweak_mode=True)
        errors = run_checks(container)
        if errors:
            if fix_errors(container, errors):
                print ('Fixed: %s' % filepath)
                container.commit()
            else :
                print ('Unable fix: %s' % filepath)
        else :
            print ('Correct: %s' % filepath)
    except :
        print ('Unhandled error: %s' % filepath)

def fix_folder(folder) :
    epubs = [ f for f in listdir(folder) if isfile(join(folder,f)) and f.lower().endswith('.epub') ]
    for f in epubs :
        fix_file(join(folder,f))

import sys
for arg in sys.argv[1:] :
    if isfile(arg) : fix_file(arg)
    elif isdir(arg) : fix_folder(arg)
    else : print ('Unknown argument: %s' % arg)