class BookSorter:
def __init__(self,
file_list,
mode,
database_path,
settings,
temp_dir=None):
# Have the GUI pass a list of files straight to here
# Then, on the basis of what is needed, pass the
# filenames to the requisite functions
# This includes getting file info for the database
# Parsing for the reader proper
# Caching upon closing
self.file_list = [i for i in file_list if os.path.exists(i)]
self.statistics = [0, (len(file_list))]
self.hashes_and_paths = {}
self.work_mode = mode[0]
self.addition_mode = mode[1]
self.database_path = database_path
self.auto_tags = settings['auto_tags']
self.auto_cover = settings['auto_cover']
self.temp_dir = temp_dir
if database_path:
self.database_hashes()
self.threading_completed = []
self.queue = Manager().Queue()
self.errors = Manager().list()
self.processed_books = []
if self.work_mode == 'addition':
progress_object_generator()
def database_hashes(self):
all_hashes_and_paths = database.DatabaseFunctions(
self.database_path).fetch_data(('Hash', 'Path'), 'books',
{'Hash': ''}, 'LIKE')
if all_hashes_and_paths:
self.hashes_and_paths = {i[0]: i[1] for i in all_hashes_and_paths}
def database_entry_for_book(self, file_hash):
database_return = database.DatabaseFunctions(
self.database_path).fetch_data(
('Title', 'Author', 'Year', 'ISBN', 'Tags', 'Position',
'Bookmarks', 'CoverImage', 'Annotations'), 'books',
{'Hash': file_hash}, 'EQUALS')[0]
book_data = []
for count, i in enumerate(database_return):
if count in (
5, 6,
8): # Position, Bookmarks, and Annotations are pickled
if i:
book_data.append(pickle.loads(i))
else:
book_data.append(None)
else:
book_data.append(i)
return book_data
def read_book(self, filename):
# filename is expected as a string containg the
# full path of the ebook file
with open(filename, 'rb') as current_book:
# This should speed up addition for larger files
# without compromising the integrity of the process
first_bytes = current_book.read(1024 *
32) # First 32KB of the file
file_md5 = hashlib.md5(first_bytes).hexdigest()
# Update the progress queue
self.queue.put(filename)
# This should not get triggered in reading mode
# IF the file is NOT being loaded into the reader
# Do not allow addition in case the file
# is already in the database and it remains at its original path
if self.work_mode == 'addition' and file_md5 in self.hashes_and_paths:
if (self.hashes_and_paths[file_md5] == filename
or os.path.exists(self.hashes_and_paths[file_md5])):
if not self.hashes_and_paths[file_md5] == filename:
warning_string = (
f'{os.path.basename(filename)} is already in database')
logger.warning(warning_string)
return
# This allows for eliminating issues with filenames that have
# a dot in them. All hail the roundabout fix.
valid_extension = False
for i in sorter:
if os.path.basename(filename).endswith(i):
file_extension = i
valid_extension = True
break
if not valid_extension:
this_error = 'Unsupported extension: ' + filename
self.errors.append(this_error)
logger.error(this_error)
return
book_ref = sorter[file_extension](filename, self.temp_dir, file_md5)
# None of the following have an exception type specified
# This will keep everything from crashing, but will make
# troubleshooting difficult
# TODO
# In application notifications
try:
book_ref.read_book()
except Exception as e:
this_error = f'Error initializing: {filename}'
self.errors.append(this_error)
logger.exception(this_error +
f' {type(e).__name__} Arguments: {e.args}')
return
this_book = {}
this_book[file_md5] = {'hash': file_md5, 'path': filename}
# Different modes require different values
if self.work_mode == 'addition':
try:
metadata = book_ref.generate_metadata()
except Exception as e:
this_error = f'Metadata generation error: {filename}'
self.errors.append(this_error)
logger.exception(this_error +
f' {type(e).__name__} Arguments: {e.args}')
return
title = metadata.title
author = metadata.author
year = metadata.year
isbn = metadata.isbn
tags = None
if self.auto_tags:
tags = metadata.tags
cover_image_raw = metadata.cover
if cover_image_raw:
cover_image = resize_image(cover_image_raw)
else:
cover_image = None
if self.auto_cover:
cover_image = fetch_cover(title, author)
this_book[file_md5]['cover_image'] = cover_image
this_book[file_md5]['addition_mode'] = self.addition_mode
if self.work_mode == 'reading':
try:
book_breakdown = book_ref.generate_content()
except Exception as e:
this_error = f'Content generation error: {filename}'
self.errors.append(this_error)
logger.exception(this_error +
f' {type(e).__name__} Arguments: {e.args}')
return
toc = book_breakdown[0]
content = book_breakdown[1]
images_only = book_breakdown[2]
try:
book_data = self.database_entry_for_book(file_md5)
except TypeError:
logger.error(
f'Database error: {filename}. Re-add book to program')
return
title = book_data[0].replace('&', '&&')
author = book_data[1]
year = book_data[2]
isbn = book_data[3]
tags = book_data[4]
position = book_data[5]
bookmarks = book_data[6]
cover = book_data[7]
annotations = book_data[8]
this_book[file_md5]['position'] = position
this_book[file_md5]['bookmarks'] = bookmarks
this_book[file_md5]['toc'] = toc
this_book[file_md5]['content'] = content
this_book[file_md5]['images_only'] = images_only
this_book[file_md5]['cover'] = cover
this_book[file_md5]['annotations'] = annotations
this_book[file_md5]['title'] = title
this_book[file_md5]['author'] = author
this_book[file_md5]['year'] = year
this_book[file_md5]['isbn'] = isbn
this_book[file_md5]['tags'] = tags
return this_book
def read_progress(self):
while True:
processed_file = self.queue.get()
self.threading_completed.append(processed_file)
total_number = len(self.file_list)
completed_number = len(self.threading_completed)
# Just for the record, this slows down book searching by about 20%
if _progress_emitter: # Skip update in reading mode
_progress_emitter.update_progress(completed_number * 100 //
total_number)
if total_number == completed_number:
break
def initiate_threads(self):
if not self.file_list:
return None
def pool_creator():
_pool = Pool(thread_count)
self.processed_books = _pool.map(self.read_book, self.file_list)
_pool.close()
_pool.join()
start_time = time.time()
worker_thread = threading.Thread(target=pool_creator)
progress_thread = threading.Thread(target=self.read_progress)
worker_thread.start()
progress_thread.start()
worker_thread.join()
progress_thread.join(timeout=.5)
return_books = {}
# Exclude None returns generated in case of duplication / parse errors
self.processed_books = [i for i in self.processed_books if i]
for i in self.processed_books:
for j in i:
return_books[j] = i[j]
del self.processed_books
processing_time = str(time.time() - start_time)
logger.info('Finished processing in ' + processing_time)
return return_books, self.errors
class BookSorter:
def __init__(self,
file_list,
mode,
database_path,
auto_tags=True,
temp_dir=None):
# Have the GUI pass a list of files straight to here
# Then, on the basis of what is needed, pass the
# filenames to the requisite functions
# This includes getting file info for the database
# Parsing for the reader proper
# Caching upon closing
self.file_list = [i for i in file_list if os.path.exists(i)]
self.statistics = [0, (len(file_list))]
self.hashes_and_paths = {}
self.work_mode = mode[0]
self.addition_mode = mode[1]
self.database_path = database_path
self.auto_tags = auto_tags
self.temp_dir = temp_dir
if database_path:
self.database_hashes()
self.threading_completed = []
self.queue = Manager().Queue()
self.processed_books = []
if self.work_mode == 'addition':
progress_object_generator()
def database_hashes(self):
all_hashes_and_paths = database.DatabaseFunctions(
self.database_path).fetch_data(('Hash', 'Path'), 'books',
{'Hash': ''}, 'LIKE')
if all_hashes_and_paths:
# self.hashes = [i[0] for i in all_hashes]
self.hashes_and_paths = {i[0]: i[1] for i in all_hashes_and_paths}
def database_entry_for_book(self, file_hash):
database_return = database.DatabaseFunctions(
self.database_path).fetch_data(
('Title', 'Author', 'Year', 'ISBN', 'Tags', 'Position',
'Bookmarks', 'CoverImage', 'Annotations'), 'books',
{'Hash': file_hash}, 'EQUALS')[0]
book_data = []
for count, i in enumerate(database_return):
if count in (
5, 6,
8): # Position, Bookmarks, and Annotations are pickled
if i:
book_data.append(pickle.loads(i))
else:
book_data.append(None)
else:
book_data.append(i)
return book_data
def read_book(self, filename):
# filename is expected as a string containg the
# full path of the ebook file
with open(filename, 'rb') as current_book:
# This should speed up addition for larger files
# without compromising the integrity of the process
first_bytes = current_book.read(1024 *
32) # First 32KB of the file
file_md5 = hashlib.md5(first_bytes).hexdigest()
# Update the progress queue
self.queue.put(filename)
# This should not get triggered in reading mode
# IF the file is NOT being loaded into the reader
# Do not allow addition in case the file
# is already in the database and it remains at its original path
if self.work_mode == 'addition' and file_md5 in self.hashes_and_paths:
if (self.hashes_and_paths[file_md5] == filename
or os.path.exists(self.hashes_and_paths[file_md5])):
if not self.hashes_and_paths[file_md5] == filename:
print(
f'{os.path.basename(filename)} is already in database')
return
# This allows for eliminating issues with filenames that have
# a dot in them. All hail the roundabout fix.
valid_extension = False
for i in sorter:
if os.path.basename(filename).endswith(i):
file_extension = i
valid_extension = True
break
if not valid_extension:
print(filename + ' has an unsupported extension')
return
book_ref = sorter[file_extension](filename, self.temp_dir, file_md5)
# Everything following this is standard
# None values are accounted for here
is_valid = book_ref.read_book()
if not is_valid:
print('Cannot parse: ' + filename)
return
if book_ref.book:
this_book = {}
this_book[file_md5] = {'hash': file_md5, 'path': filename}
# Different modes require different values
if self.work_mode == 'addition':
# Reduce the size of the incoming image
# if one is found
title = book_ref.get_title()
author = book_ref.get_author()
year = book_ref.get_year()
isbn = book_ref.get_isbn()
tags = None
if self.auto_tags:
tags = book_ref.get_tags()
cover_image_raw = book_ref.get_cover_image()
if cover_image_raw:
cover_image = resize_image(cover_image_raw)
else:
cover_image = None
this_book[file_md5]['cover_image'] = cover_image
this_book[file_md5]['addition_mode'] = self.addition_mode
if self.work_mode == 'reading':
all_content = book_ref.get_contents()
# get_contents() returns a tuple. Index 1 is a collection of
# special settings that depend on the kind of data being parsed.
# Currently, this includes:
# Only images included images_only BOOL Book contains only images
content = all_content[0]
images_only = all_content[1]['images_only']
if not content:
content = [('Invalid', 'Something went horribly wrong')]
book_data = self.database_entry_for_book(file_md5)
title = book_data[0]
author = book_data[1]
year = book_data[2]
isbn = book_data[3]
tags = book_data[4]
position = book_data[5]
bookmarks = book_data[6]
cover = book_data[7]
annotations = book_data[8]
this_book[file_md5]['position'] = position
this_book[file_md5]['bookmarks'] = bookmarks
this_book[file_md5]['content'] = content
this_book[file_md5]['images_only'] = images_only
this_book[file_md5]['cover'] = cover
this_book[file_md5]['annotations'] = annotations
this_book[file_md5]['title'] = title
this_book[file_md5]['author'] = author
this_book[file_md5]['year'] = year
this_book[file_md5]['isbn'] = isbn
this_book[file_md5]['tags'] = tags
return this_book
def read_progress(self):
while True:
processed_file = self.queue.get()
self.threading_completed.append(processed_file)
total_number = len(self.file_list)
completed_number = len(self.threading_completed)
if progress_emitter: # Skip update in reading mode
progress_emitter.update_progress(completed_number * 100 //
total_number)
if total_number == completed_number:
break
def initiate_threads(self):
if not self.file_list:
return None
def pool_creator():
_pool = Pool(5)
self.processed_books = _pool.map(self.read_book, self.file_list)
_pool.close()
_pool.join()
start_time = time.time()
worker_thread = threading.Thread(target=pool_creator)
progress_thread = threading.Thread(target=self.read_progress)
worker_thread.start()
progress_thread.start()
worker_thread.join()
progress_thread.join(timeout=.5)
return_books = {}
# Exclude None returns generated in case of duplication / parse errors
self.processed_books = [i for i in self.processed_books if i]
for i in self.processed_books:
for j in i:
return_books[j] = i[j]
del self.processed_books
print('Finished processing in', time.time() - start_time)
return return_books
class BookSorter:
def __init__(self, file_list, mode, database_path, settings, temp_dir=None):
# Have the GUI pass a list of files straight to here
# Then, on the basis of what is needed, pass the
# filenames to the requisite functions
# This includes getting file info for the database
# Parsing for the reader proper
# Caching upon closing
self.file_list = [i for i in file_list if os.path.exists(i)]
self.statistics = [0, (len(file_list))]
self.hashes_and_paths = {}
self.work_mode = mode[0]
self.addition_mode = mode[1]
self.database_path = database_path
self.auto_tags = settings['auto_tags']
self.auto_cover = settings['auto_cover']
self.temp_dir = temp_dir
if database_path:
self.database_hashes()
self.threading_completed = []
self.queue = Manager().Queue()
self.errors = Manager().list()
self.processed_books = []
if self.work_mode == 'addition':
progress_object_generator()
def database_hashes(self):
all_hashes_and_paths = database.DatabaseFunctions(
self.database_path).fetch_data(
('Hash', 'Path'),
'books',
{'Hash': ''},
'LIKE')
if all_hashes_and_paths:
self.hashes_and_paths = {
i[0]: i[1] for i in all_hashes_and_paths}
def database_entry_for_book(self, file_hash):
database_return = database.DatabaseFunctions(
self.database_path).fetch_data(
('Title', 'Author', 'Year', 'ISBN', 'Tags',
'Position', 'Bookmarks', 'CoverImage', 'Annotations'),
'books',
{'Hash': file_hash},
'EQUALS')[0]
book_data = []
for count, i in enumerate(database_return):
if count in (5, 6, 8): # Position, Bookmarks, and Annotations are pickled
if i:
book_data.append(pickle.loads(i))
else:
book_data.append(None)
else:
book_data.append(i)
return book_data
def read_book(self, filename):
# filename is expected as a string containg the
# full path of the ebook file
with open(filename, 'rb') as current_book:
# This should speed up addition for larger files
# without compromising the integrity of the process
first_bytes = current_book.read(1024 * 32) # First 32KB of the file
file_md5 = hashlib.md5(first_bytes).hexdigest()
# Update the progress queue
self.queue.put(filename)
# This should not get triggered in reading mode
# IF the file is NOT being loaded into the reader
# Do not allow addition in case the file
# is already in the database and it remains at its original path
if self.work_mode == 'addition' and file_md5 in self.hashes_and_paths:
if (self.hashes_and_paths[file_md5] == filename
or os.path.exists(self.hashes_and_paths[file_md5])):
if not self.hashes_and_paths[file_md5] == filename:
warning_string = (
f'{os.path.basename(filename)} is already in database')
logger.warning(warning_string)
return
# This allows for eliminating issues with filenames that have
# a dot in them. All hail the roundabout fix.
valid_extension = False
for i in sorter:
if os.path.basename(filename).endswith(i):
file_extension = i
valid_extension = True
break
if not valid_extension:
this_error = 'Unsupported extension: ' + filename
self.errors.append(this_error)
logger.error(this_error)
return
book_ref = sorter[file_extension](filename, self.temp_dir, file_md5)
# None of the following have an exception type specified
# This will keep everything from crashing, but will make
# troubleshooting difficult
# TODO
# In application notifications
try:
book_ref.read_book()
except Exception as e:
this_error = f'Error initializing: {filename}'
self.errors.append(this_error)
logger.exception(this_error + f' {type(e).__name__} Arguments: {e.args}')
return
this_book = {}
this_book[file_md5] = {
'hash': file_md5,
'path': filename}
# Different modes require different values
if self.work_mode == 'addition':
try:
metadata = book_ref.generate_metadata()
except Exception as e:
this_error = f'Metadata generation error: {filename}'
self.errors.append(this_error)
logger.exception(this_error + f' {type(e).__name__} Arguments: {e.args}')
return
title = metadata.title
author = metadata.author
year = metadata.year
isbn = metadata.isbn
tags = None
if self.auto_tags:
tags = metadata.tags
cover_image_raw = metadata.cover
if cover_image_raw:
cover_image = resize_image(cover_image_raw)
else:
cover_image = None
if self.auto_cover:
cover_image = fetch_cover(title, author)
this_book[file_md5]['cover_image'] = cover_image
this_book[file_md5]['addition_mode'] = self.addition_mode
if self.work_mode == 'reading':
try:
book_breakdown = book_ref.generate_content()
except Exception as e:
this_error = f'Content generation error: {filename}'
self.errors.append(this_error)
logger.exception(this_error + f' {type(e).__name__} Arguments: {e.args}')
return
toc = book_breakdown[0]
content = book_breakdown[1]
images_only = book_breakdown[2]
try:
book_data = self.database_entry_for_book(file_md5)
except TypeError:
logger.error(
f'Database error: {filename}. Re-add book to program')
return
title = book_data[0].replace('&', '&&')
author = book_data[1]
year = book_data[2]
isbn = book_data[3]
tags = book_data[4]
position = book_data[5]
bookmarks = book_data[6]
cover = book_data[7]
annotations = book_data[8]
this_book[file_md5]['position'] = position
this_book[file_md5]['bookmarks'] = bookmarks
this_book[file_md5]['toc'] = toc
this_book[file_md5]['content'] = content
this_book[file_md5]['images_only'] = images_only
this_book[file_md5]['cover'] = cover
this_book[file_md5]['annotations'] = annotations
this_book[file_md5]['title'] = title
this_book[file_md5]['author'] = author
this_book[file_md5]['year'] = year
this_book[file_md5]['isbn'] = isbn
this_book[file_md5]['tags'] = tags
return this_book
def read_progress(self):
while True:
processed_file = self.queue.get()
self.threading_completed.append(processed_file)
total_number = len(self.file_list)
completed_number = len(self.threading_completed)
# Just for the record, this slows down book searching by about 20%
if _progress_emitter: # Skip update in reading mode
_progress_emitter.update_progress(
completed_number * 100 // total_number)
if total_number == completed_number:
break
def initiate_threads(self):
if not self.file_list:
return None
def pool_creator():
_pool = Pool(thread_count)
self.processed_books = _pool.map(
self.read_book, self.file_list)
_pool.close()
_pool.join()
start_time = time.time()
worker_thread = threading.Thread(target=pool_creator)
progress_thread = threading.Thread(target=self.read_progress)
worker_thread.start()
progress_thread.start()
worker_thread.join()
progress_thread.join(timeout=.5)
return_books = {}
# Exclude None returns generated in case of duplication / parse errors
self.processed_books = [i for i in self.processed_books if i]
for i in self.processed_books:
for j in i:
return_books[j] = i[j]
del self.processed_books
processing_time = str(time.time() - start_time)
logger.info('Finished processing in ' + processing_time)
return return_books, self.errors