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MangaseeDL.py
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MangaseeDL.py
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import argparse
import asyncio
from http.client import HTTPConnection
import json
import logging
import os
import pprint
import re
import sys
import typing
import aiofiles
import requests
import requests_html
MANGASEE123HOST = "https://mangasee123.com"
logging.basicConfig()
LOGGER = logging.getLogger()
LOGGER.setLevel(logging.INFO)
def add_verbosity() -> None:
"""
Turn on quite a bit of verbose logging to figure out why downloads are
failing. You don't want this normally
"""
HTTPConnection.debuglevel = 1
LOGGER.setLevel(logging.DEBUG)
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True
def remove_leading_zeros(num: str) -> str:
"""
Remove leading zeros from a string.
"""
inum = int(num, base=10)
return str(inum)
def add_leading_zeros(num: int, total_len: int) -> str:
"""
Add leading zeros to a string to reach the specified length.
"""
snum = str(num)
return snum.zfill(total_len)
def get_chapter_first_page_url(manga_name: str, chapter: str, page: str) -> str:
"""
Get mangasee123 reader url for a specific manga/chapter/page
Both chapter and page should be without leading zeros
"""
return (
f"{MANGASEE123HOST}/read-online/{manga_name}-chapter-{chapter}-page-{page}.html"
)
def get_page_image_url(host: str, name: str, chapter: int, page: int) -> str:
"""
Get hosted image url for a specific manga page
"""
schapter = add_leading_zeros(chapter, 4)
spage = add_leading_zeros(page, 3)
return f"https://{host}/manga/{name}/{schapter}-{spage}.png"
def get_manga_details(name: str) -> dict[int, typing.Any]:
"""
Get details for a manga from Mangasee123.
Details include available chapters and number of pages in each chapter
"""
url = get_chapter_first_page_url(name, "1", "1")
session = requests_html.HTMLSession()
resp = session.get(url)
content = resp.content.decode("utf-8")
chapter_details_pattern = re.compile("vm.CHAPTERS = (.*);")
chapter_details_search = chapter_details_pattern.search(content)
if chapter_details_search:
chapter_details_str = chapter_details_search.groups()[0]
else:
LOGGER.warning("No match for vm.CHAPTERS found")
LOGGER.debug("Contents: %s", content)
raise SystemExit("no match for vm.CHAPTERS found, bailing")
chapter_details_list = json.loads(chapter_details_str)
logging.getLogger().debug("First page chapter details: %s",
pprint.pformat(chapter_details_list))
chapter_details_dict = {}
for chapter_detail in chapter_details_list:
chapter_details_dict[
int(remove_leading_zeros(chapter_detail["Chapter"][1:-1]))
] = chapter_detail
return chapter_details_dict
async def get_chapter_download_and_save_data(
session, name: str, chapter: int, pages: int) -> list:
"""
Specify the url and save path for each page of a chapter
"""
data = []
LOGGER.debug("get_chapter_download_and_save_data(%s, %i, %i)", name,
chapter, pages)
url = get_chapter_first_page_url(name, str(chapter), "1")
resp = await session.request(method="GET", url=url)
content = resp.content.decode("utf-8")
host_pattern = re.compile('vm.CurPathName = "(.*)";')
host_search = host_pattern.search(content)
if host_search:
host = host_search.groups()[0]
else:
LOGGER.warning("No match for vm.CurPathName found")
LOGGER.debug("Contents: %s", content)
raise SystemExit("no match for vm.CurPathName found, bailing")
for page in range(1, int(pages) + 1):
download_url = get_page_image_url(host, name, chapter, page)
save_path = os.path.join(name,
add_leading_zeros(chapter, 4),
f"{add_leading_zeros(page, 3)}.png")
data.append({"download_url": download_url, "save_path": save_path})
return data
async def download_and_save_chapter(
session: requests_html.AsyncHTMLSession, name: str, chapter: int, pages: int
) -> None:
"""
Asynchronously download and save a page (skip if file exists)
"""
try:
LOGGER.info("Started downloading chapter %s...", chapter)
data = await get_chapter_download_and_save_data(session, name, chapter, pages)
for d in data:
download_url = d["download_url"]
save_path = d["save_path"]
if os.path.isfile(save_path):
continue
resp = await session.request(method="GET", url=download_url)
async with aiofiles.open(save_path, "wb") as f:
await f.write(resp.content)
LOGGER.info("Finished downloading chapter %s...", chapter)
except asyncio.TimeoutError:
LOGGER.warning("Timeout in downloading chapter %s!", chapter)
async def download_chapters(name: str, chapter_details: typing.Iterable) -> None:
"""
Main couroutine for downloading chapters
"""
if os.path.isfile(name):
raise FileExistsError
if not os.path.exists(name):
os.mkdir(name)
session = requests_html.AsyncHTMLSession()
LOGGER.info("Fetching requested chapter details...")
coroutines = []
for ch_detail in chapter_details:
chapter = ch_detail["Chapter"][1:-1]
pages = int(ch_detail["Page"])
if not os.path.isdir(os.path.join(name, chapter)):
os.mkdir(os.path.join(name, chapter))
coroutines.append(
download_and_save_chapter(session, name, chapter, pages),
)
LOGGER.info("Downloading requested chapters...")
await asyncio.gather(*coroutines)
LOGGER.info("Download completed!")
if __name__ == "__main__":
help = """
Usage: python mangasee123-downloader.py MANGA_NAME [CHAPTER_START [CHAPTER_END]]
Download mangas from https://mangasee123.com/
Note: MANGA_NAME is case insensitives. If it contains spaces, you can place hyphen ("-") instead of spaces or just put the name into quoutations.
Note: Downloaded images will be placed into {working directory}/{manga name}/{chapter number}/{page number}
Options:
If nothing other than MANGA_NAME is provided, the script tries to download all chapters.
Example: python downloader.py Vagabond
If only CHAPTER_START is provided, only that chapter is downloaded.
Example: $ python downloader.py one-piece 10
will download chapter 10
If CHAPTER_START and CHAPTER_END are both provided, the script tries to download CHAPTER_START to CHAPTER_END
Example: $ python downloader.py Diamond-Is-Unbreakable 10 20
will download chapter 10 through 20
"""
parser = argparse.ArgumentParser()
parser.add_argument("manga_name")
parser.add_argument("chapter_start", nargs="?", type=int)
parser.add_argument("chapter_end", nargs="?", type=int)
parser.add_argument(
"-l", "--limit", help="Limit maximum simultaneous chapter downloads", type=int
)
parser.add_argument(
"-v", "--verbose", help="Add debugging output",
action="store_true")
try:
args = parser.parse_args()
except SystemExit:
LOGGER.info(help)
sys.exit()
if args.verbose:
add_verbosity()
name = "-".join(args.manga_name.title().split())
try:
chapters_dict = get_manga_details(name)
LOGGER.info("Fetched details for %s...", name)
except AttributeError:
LOGGER.warning("Could not get info for %s from http://mangasee123.com", name)
sys.exit()
except requests.exceptions.ConnectionError:
LOGGER.error("Could not connect to http://mangasee123.com")
sys.exit()
min_chapter = min(chapters_dict.keys())
max_chapter = max(chapters_dict.keys())
non_available_chapters = list(
set(range(min_chapter, max_chapter + 1)) - set(chapters_dict.keys())
)
try:
ch_start = args.chapter_start or min_chapter
ch_end = args.chapter_end or args.chapter_start or max_chapter
target_chapters = []
for ch in range(ch_start, ch_end + 1):
chapter = chapters_dict.get(ch)
if not chapter:
LOGGER.info("Chapter %s is not available, skipping...", ch)
else:
target_chapters.append(chapter)
except ValueError:
LOGGER.error("Could not parse input!")
LOGGER.info(help)
sys.exit()
except KeyError:
LOGGER.error("Could not find specified chapter(s)!")
LOGGER.error("Available chapter: %s-%s", min_chapter, max_chapter)
LOGGER.error("Not available chapters: %s", non_available_chapters)
sys.exit()
try:
limit = args.limit or len(target_chapters)
for i in range(0, len(target_chapters), limit):
asyncio.run(download_chapters(name, target_chapters[i : i + limit]))
except FileExistsError:
LOGGER.error(
"Could not create directory %s, It appears that a file with that name exists!",
name
)
sys.exit()