412 lines
17 KiB
Python
Executable File
412 lines
17 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import json
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import os
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import shutil
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import subprocess
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import tempfile
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import time
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from pathlib import Path
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import img2pdf
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import selenium
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from PIL import Image
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from PyPDF2 import PdfMerger, PdfReader, PdfWriter
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from pagelabels import PageLabelScheme, PageLabels
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from pdfrw import PdfReader as pdfrw_reader
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from pdfrw import PdfWriter as pdfrw_writer
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from selenium.webdriver import ActionChains, Keys
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from selenium.webdriver.chrome.service import Service
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from selenium.webdriver.common.by import By
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from seleniumwire import webdriver
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from tqdm import tqdm
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from webdriver_manager.chrome import ChromeDriverManager
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from fucts.roman import move_romans_to_front, roman_sort_with_ints, try_convert_int
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parser = argparse.ArgumentParser()
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parser.add_argument('--output', default='./VitalSource/')
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parser.add_argument('--isbn', required=True)
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parser.add_argument('--delay', default=2, type=int, help='Delay between pages to let them load in seconds.')
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parser.add_argument('--pages', default=None, type=int, help='Override how many pages to save.') # TODO
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parser.add_argument('--start-page', default=0, type=int, help='Start on this page. Pages start at zero and include any non-numbered pages.')
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parser.add_argument('--end-page', default=-1, type=int, help='End on this page.')
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parser.add_argument('--chrome-exe', default=None, type=str, help='Path to the Chrome executable. Leave blank to auto-detect.')
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parser.add_argument('--disable-web-security', action='store_true', help="If pages aren't loading then you can try disabling CORS protections.")
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parser.add_argument('--language', default='eng', help='OCR language. Default: "eng"')
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parser.add_argument('--skip-scrape', action='store_true', help="Don't scrape anything, just re-build the PDF from existing files.")
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parser.add_argument('--only-scrape-metadata', action='store_true', help="Similar to --skip-scrape, but only scrape the metadata.")
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parser.add_argument('--skip-ocr', action='store_true', help="Don't do any OCR.")
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parser.add_argument('--compress', action='store_true', help="Run compression and optimization. Probably won't do anything as there isn't much more compression that can be done.")
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args = parser.parse_args()
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args.output = Path(args.output)
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args.output.mkdir(exist_ok=True, parents=True)
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# ebook_output = args.output / f'{args.isbn}.pdf'
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ebook_files = args.output / args.isbn
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ebook_files.mkdir(exist_ok=True, parents=True)
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book_info = {}
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non_number_pages = 0
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def get_num_pages():
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while True:
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try:
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total = int(driver.execute_script('return document.getElementsByClassName("sc-knKHOI gGldJU")[0].innerHTML').strip().split('/')[-1].strip())
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try:
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# Get the value of the page number textbox
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current_page = driver.execute_script('return document.getElementsByClassName("InputControl__input-fbzQBk hDtUvs TextField__InputControl-iza-dmV iISUBf")[0].value')
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if current_page == '' or not current_page:
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# This element may be empty so just set it to 0
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current_page = 0
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except selenium.common.exceptions.JavascriptException:
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current_page = 0
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return current_page, total
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except selenium.common.exceptions.JavascriptException:
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time.sleep(1)
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def load_book_page(page_id):
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driver.get(f'https://bookshelf.vitalsource.com/reader/books/{args.isbn}/pageid/{page_id}')
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get_num_pages() # Wait for the page to load
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# Wait for the page loader animation to disappear
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while len(driver.find_elements(By.CLASS_NAME, "sc-AjmGg dDNaMw")):
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time.sleep(1)
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if not args.skip_scrape or args.only_scrape_metadata:
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chrome_options = webdriver.ChromeOptions()
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if args.disable_web_security:
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chrome_options.add_argument('--disable-web-security')
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print('DISABLED WEB SECURITY!')
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chrome_options.add_argument('--disable-http2') # VitalSource's shit HTTP2 server is really slow and will sometimes send bad data.
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if args.chrome_exe:
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chrome_options.binary_location = args.chrome_exe # '/usr/bin/google-chrome'
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seleniumwire_options = {
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'disable_encoding': True # Ask the server not to compress the response
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}
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driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()), chrome_options=chrome_options, seleniumwire_options=seleniumwire_options)
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driver.get(f'https://bookshelf.vitalsource.com')
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input('Press ENTER once logged in...')
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driver.maximize_window()
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page_num = args.start_page
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load_book_page(page_num)
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# Get book info
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print('Scraping metadata...')
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time.sleep(args.delay * 2)
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failed = True
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for i in range(5):
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for request in driver.requests:
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if request.url == f'https://jigsaw.vitalsource.com/books/{args.isbn}/pages':
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wait = 0
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while not request.response and wait < 30:
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time.sleep(1)
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wait += 1
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if not request.response or not request.response.body:
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print('Failed to get pages information.')
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else:
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book_info['pages'] = json.loads(request.response.body.decode())
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elif request.url == f'https://jigsaw.vitalsource.com/info/books.json?isbns={args.isbn}':
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wait = 0
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while not request.response and wait < 30:
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time.sleep(1)
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wait += 1
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if not request.response or not request.response.body:
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print('Failed to get book information.')
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else:
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book_info['book'] = json.loads(request.response.body.decode())
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elif request.url == f'https://jigsaw.vitalsource.com/books/{args.isbn}/toc':
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wait = 0
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while not request.response and wait < 30:
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time.sleep(1)
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wait += 1
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if not request.response or not request.response.body:
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print('Failed to get TOC information, only got:', list(book_info.keys()))
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else:
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book_info['toc'] = json.loads(request.response.body.decode())
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if 'pages' not in book_info.keys() or 'book' not in book_info.keys() or 'toc' not in book_info.keys():
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print('Missing some book data, only got:', list(book_info.keys()))
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else:
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failed = False
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if not failed:
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break
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print('Retrying metadata scrape in 10s...')
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load_book_page(page_num)
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time.sleep(10)
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if args.only_scrape_metadata:
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driver.close()
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del driver
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if not args.only_scrape_metadata:
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_, total_pages = get_num_pages()
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if args.start_page > 0:
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print('You specified a start page so ignore the very large page count.')
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total_pages = 99999999999999999 if args.start_page > 0 else total_pages
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print('Total number of pages:', total_pages)
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print('Scraping pages...')
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page_urls = set()
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failed_pages = set()
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small_pages_redo = set()
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bar = tqdm(total=total_pages)
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bar.update(page_num)
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while page_num < total_pages + 1:
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time.sleep(args.delay)
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retry_delay = 5
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base_url = None
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for page_retry in range(3): # retry the page max this many times
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largest_size = 0
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for find_img_retry in range(3):
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for request in driver.requests:
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if request.url.startswith(f'https://jigsaw.vitalsource.com/books/{args.isbn}/images/'):
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base_url = request.url.split('/')
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del base_url[-1]
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base_url = '/'.join(base_url)
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time.sleep(1)
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if base_url:
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break
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bar.write(f'Could not find a matching image for page {page_num}, sleeping {retry_delay}s...')
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time.sleep(retry_delay)
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retry_delay += 5
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page, _ = get_num_pages()
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if not base_url:
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bar.write(f'Failed to get a URL for page {page_num}, retrying later.')
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failed_pages.add(page_num)
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else:
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page_urls.add((page, base_url))
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bar.write(base_url)
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# If this isn't a numbered page we will need to increment the page count
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try:
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int(page)
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except ValueError:
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total_pages += 1
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non_number_pages += 1
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bar.write(f'Non-number page {page}, increasing page count by 1 to: {total_pages}')
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bar.total = total_pages
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bar.refresh()
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if page_num == args.end_page:
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bar.write(f'Exiting on page {page_num}.')
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break
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# On the first page the back arrow is disabled and will trigger this
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if isinstance(page_num, int) and page_num > 0:
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try:
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# If a page forward/backwards button is disabled
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if driver.execute_script(f'return document.getElementsByClassName("IconButton__button-bQttMI gHMmeA sc-oXPCX mwNce")[0].disabled'):
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bar.write(f'Book completed, exiting.')
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break
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except selenium.common.exceptions.JavascriptException:
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pass
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# Move to the next page
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del driver.requests
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actions = ActionChains(driver)
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actions.send_keys(Keys.RIGHT)
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actions.perform()
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bar.update()
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page_num += 1
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bar.close()
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print('Re-doing failed pages...')
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bar = tqdm(total=len(failed_pages))
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for page in failed_pages:
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load_book_page(page)
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time.sleep(args.delay)
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retry_delay = 5
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base_url = None
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for page_retry in range(3): # retry the page max this many times
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largest_size = 0
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for find_img_retry in range(3):
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for request in driver.requests:
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if request.url.startswith(f'https://jigsaw.vitalsource.com/books/{args.isbn}/images/'):
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base_url = request.url.split('/')
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del base_url[-1]
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base_url = '/'.join(base_url)
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time.sleep(1)
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if base_url:
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break
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bar.write(f'Could not find a matching image for page {page_num}, sleeping {retry_delay}s...')
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time.sleep(retry_delay)
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retry_delay += 5
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page, _ = get_num_pages()
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if not base_url:
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bar.write(f'Failed to get a URL for page {page_num}, retrying later.')
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failed_pages.add(page_num)
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else:
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page_urls.add((page, base_url))
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bar.write(base_url)
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del driver.requests
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bar.update(1)
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bar.close()
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time.sleep(1)
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print('All pages scraped! Now downloading images...')
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bar = tqdm(total=len(page_urls))
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for page, base_url in page_urls:
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success = False
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for retry in range(6):
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del driver.requests
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time.sleep(args.delay / 2)
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driver.get(f'{base_url.strip("/")}/2000')
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time.sleep(args.delay / 2)
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retry_delay = 5
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img_data = None
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for page_retry in range(3): # retry the page max this many times
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largest_size = 0
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for find_img_retry in range(3):
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for request in driver.requests:
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if request.url.startswith(f'https://jigsaw.vitalsource.com/books/{args.isbn}/images/'):
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img_data = request.response.body
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break
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dl_file = ebook_files / f'{page}.jpg'
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if img_data:
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with open(dl_file, 'wb') as file:
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file.write(img_data)
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# Re-save the image to make sure it's in the correct format
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img = Image.open(dl_file)
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if img.width != 2000:
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bar.write(f'Image too small at {img.width}px wide, retrying: {base_url}')
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driver.get('https://google.com')
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time.sleep(8)
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load_book_page(0)
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time.sleep(8)
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continue
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img.save(dl_file, format='JPEG', subsampling=0, quality=100)
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del img
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success = True
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if success:
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break
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if not success:
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bar.write(f'Failed to download image: {base_url}')
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bar.update()
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bar.close()
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driver.close()
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del driver
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else:
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print('Page scrape skipped...')
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# Sometimes the book skips a page. Add a blank page if thats the case.
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print('Checking for blank pages...')
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existing_page_files = move_romans_to_front(roman_sort_with_ints([try_convert_int(str(x.stem)) for x in list(ebook_files.iterdir())]))
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if non_number_pages == 0: # We might not have scraped so this number needs to be updated.
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for item in existing_page_files:
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if isinstance(try_convert_int(item), str):
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non_number_pages += 1
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for page in tqdm(iterable=existing_page_files):
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page_i = try_convert_int(page)
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if isinstance(page_i, int) and page_i > 0:
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page_i += non_number_pages
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last_page_i = try_convert_int(existing_page_files[page_i - 1])
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if isinstance(last_page_i, int):
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last_page_i = last_page_i + non_number_pages
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if last_page_i != page_i - 1:
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img = Image.new('RGB', (2000, 2588), (255, 255, 255))
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img.save(ebook_files / f'{int(page) - 1}.jpg')
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tqdm.write(f'Created blank image for page {int(page) - 1}.')
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print('Building PDF...')
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raw_pdf_file = args.output / f'{args.isbn} RAW.pdf'
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existing_page_files = move_romans_to_front(roman_sort_with_ints([try_convert_int(str(x.stem)) for x in list(ebook_files.iterdir())]))
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page_files = [str(ebook_files / f'{x}.jpg') for x in existing_page_files]
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pdf = img2pdf.convert(page_files)
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with open(raw_pdf_file, 'wb') as f:
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f.write(pdf)
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if 'book' in book_info.keys() and 'books' in book_info['book'].keys() and len(book_info['book']['books']):
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title = book_info['book']['books'][0]['title']
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author = book_info['book']['books'][0]['author']
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else:
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title = args.isbn
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author = 'Unknown'
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if not args.skip_ocr:
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print('Running OCR...')
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ocr_in = raw_pdf_file
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_, raw_pdf_file = tempfile.mkstemp()
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subprocess.run(f'ocrmypdf -l {args.language} --title "{title}" --jobs $(nproc) --output-type pdfa "{ocr_in}" "{raw_pdf_file}"', shell=True)
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else:
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ebook_output_ocr = args.output / f'{args.isbn}.pdf'
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print('Skipping OCR...')
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# Add metadata
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print('Adding metadata...')
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file_in = open(raw_pdf_file, 'rb')
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pdf_reader = PdfReader(file_in)
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pdf_merger = PdfMerger()
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pdf_merger.append(file_in)
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pdf_merger.add_metadata({'/Author': author, '/Title': title, '/Creator': f'ISBN: {args.isbn}'})
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if 'toc' in book_info.keys():
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print('Creating TOC...')
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for item in book_info['toc']:
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pdf_merger.add_outline_item(item['title'], int(item['cfi'].strip('/')) - 1)
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else:
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print('Not creating TOC...')
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_, tmpfile = tempfile.mkstemp()
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pdf_merger.write(open(tmpfile, 'wb'))
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romans_end = 0
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for p in existing_page_files:
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if isinstance(p, str):
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romans_end += 1
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if romans_end > 0:
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print('Renumbering pages...')
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reader = pdfrw_reader(tmpfile)
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labels = PageLabels.from_pdf(reader)
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roman_labels = PageLabelScheme(
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startpage=0,
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style='none',
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prefix='Cover',
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firstpagenum=1
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)
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labels.append(roman_labels)
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roman_labels = PageLabelScheme(
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startpage=1,
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style='roman lowercase',
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firstpagenum=1
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)
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labels.append(roman_labels)
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normal_labels = PageLabelScheme(
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startpage=romans_end,
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style='arabic',
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firstpagenum=1
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)
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labels.append(normal_labels)
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labels.write(reader)
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writer = pdfrw_writer()
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writer.trailer = reader
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writer.write(args.output / f'{title}.pdf')
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else:
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shutil.move(tmpfile, args.output / f'{title}.pdf')
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os.remove(tmpfile)
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if args.compress:
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print('Compressing PDF...')
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# https://pypdf2.readthedocs.io/en/latest/user/file-size.html
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reader = PdfReader(args.output / f'{title}.pdf')
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writer = PdfWriter()
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for page in reader.pages:
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page.compress_content_streams() # This is CPU intensive!
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writer.add_page(page)
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with open(args.output / f'{title} compressed.pdf', 'wb') as f:
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writer.write(f)
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