Files
pyShelf/lib/library.py
2019-10-01 17:30:36 -04:00

96 lines
3.4 KiB
Python
Executable File

#!/usr/bin/python
import json
import os
import re
import zipfile
from bs4 import BeautifulSoup
from config import Config
config = Config()
class Catalogue:
"""Decodes and stores book information"""
"""Step One: filter_books"""
def __init__(self):
self.file_list = []
with open(config.book_shelf, 'r') as f:
try:
self.catalogue = json.load(f)
self.current_files = self.scan_folder()
except Exception:
self.filter_books()
def scan_folder(self, folder=config.book_path):
for f in os.listdir(folder):
_path = os.path.abspath(folder+'/'+f)
#_path = os.path.abspath('.')+'/'+folder+f+'/'
_is_dir = os.path.isdir(_path.strip()+'/')
if _is_dir:
self.file_list.append(self.scan_folder(_path))
self.file_list.append(_path)
def scan_book(self, book):
"""REMOVE ME?"""
_epub = zipfile.ZipFile(book)
with _epub as _epub_open:
try: _epub_open.open('content.opf'); return True
except Exception as e: print(e); return False
def filter_books(self):
"""
Scan book folder recursively for epub files
filter_books(0) -> Catalogue.books
filter_books(1) -> self.books[]
:param ret: 0 -> create class property -> dump json
:param ret: 1 -> create & return class property
"""
self.scan_folder()
regx = re.compile(r"\.epub")
self.books = list(filter(regx.search, filter(None, self.file_list)))
_book_list_expanded = {}
with open(config.book_shelf, 'w') as f:
for book in self.books:
_book_list_expanded[book] = self.process_book(book)
json.dump(_book_list_expanded, f)
return _book_list_expanded
def process_book(self, book):
"""Return dictionary of epub file contents"""
f_name = 'content.opf'
book = zipfile.ZipFile(book, 'r')
details = {}
with book as book_zip:
details['files'] = []
details['path'] = book.filename
expanded = book_zip.infolist()
regx = re.compile(r'\.opf|cover')
for i in expanded:
match = re.search(regx, i.filename)
if match:
# Returns zip file location of requested files
details['files'].append(match.string)
return details
def extract_metadata(self, book):
"""
Return extracted metadata and cover picture
book['path'] == Full path to ebook file
book['files'] == list of files from self.process_book(book)
"""
book_zip = zipfile.ZipFile(book['path'], 'r')
opf_regx, cover_regx = re.compile(r'\.opf'), re.compile(r'\.jpg|\.png|\.bmp|\.gif')
with book_zip as f:
content = list(filter(opf_regx.search, book['files']))
content = book_zip.open(content[0])
soup = BeautifulSoup(content, "xml")
title = soup.find("dc:title")
author = soup.find("dc:creator")
cover = soup.find("meta", attrs={"name" : "cover"})
return title
def compare_shelf_current(self):
try:
self.books
except Exception:
self.filter_books()
unique = set(self.books) - set(self.catalogue)
return unique