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Add archive-fandom-wiki
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Jeffrey Serio
parent
de8f892b7b
commit
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324
archive-fandom-wiki
Executable file
324
archive-fandom-wiki
Executable file
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#!/usr/bin/env python
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# This program archives the content of fandom wikis.
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#
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# It's pretty much feature-complete. I still have to add detailed comments to
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# describe what each significant piece of code is doing.
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#
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# This program doesn't scrape from the fandom.com wiki sites directly; rather,
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# it uses my BreezeWiki instance to avoid downloading unneccessary ads, images,
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# and other junk.
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#
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# Each resulting archive is self-contained, meaning one can extract the
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# contents and browse the wiki snapshot locally (offline). The URLs for CSS,
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# images, and links in each page are replaced by the file:/// URLs for their
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# corresponding pages on the local filesystem.
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#
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# This file is formatted with `black -l 79' to comply with PEP8 standards.
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import concurrent.futures
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import shutil
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import sys
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import tarfile
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from datetime import datetime
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from pathlib import Path
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from urllib.parse import urljoin
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import requests
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from bs4 import BeautifulSoup
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from rich.console import Console
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from rich.progress import Progress
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from rich.tree import Tree
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console = Console()
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class FandomWiki:
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def __init__(self, name: str):
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self.name = name
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self.canonical_url = "https://{}.fandom.com".format(name)
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self.breezewiki_url = "https://wiki.hyperreal.coffee/{}".format(name)
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self.site_dir = Path.cwd().joinpath("{}.fandom.com".format(name))
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self.images_dir = self.site_dir.joinpath("images")
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if not self.site_dir.exists():
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self.site_dir.mkdir()
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if not self.images_dir.exists():
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self.images_dir.mkdir()
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def get_hop0_urls(self) -> list:
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starting_url = "{}/wiki/Local_Sitemap".format(self.canonical_url)
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hop0_urls = list()
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while True:
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response = requests.get(starting_url)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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mw_allpages_nav = soup.find_all(
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"div", {"class": "mw-allpages-nav"}
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)[0]
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if (
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len(mw_allpages_nav.find_all("a")) < 2
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and "Next page"
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not in mw_allpages_nav.find_all("a")[0].get_text()
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):
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break
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else:
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if len(mw_allpages_nav.find_all("a")) < 2:
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starting_url = "{}{}".format(
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self.canonical_url,
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mw_allpages_nav.find_all("a")[0].get("href"),
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)
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else:
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starting_url = "{}{}".format(
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self.canonical_url,
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mw_allpages_nav.find_all("a")[1].get("href"),
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)
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hop0_urls.append(starting_url)
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console.print("[[bold]HOP 0[/bold]] {}".format(starting_url))
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return hop0_urls
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def get_hop1_urls(self, hop0_urls: list):
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hop1_urls = [self.breezewiki_url]
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for url in hop0_urls:
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response = requests.get(url)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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for item in soup.find_all("a"):
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if item.get("href") and item.get("href").startswith("/wiki"):
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if "Local_Sitemap" not in item.get(
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"href"
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) and "Special:" not in item.get("href"):
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new_url = "{}{}".format(
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self.breezewiki_url, item.get("href")
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)
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hop1_urls.append(new_url)
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console.print(
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"[[bold]HOP 1[/bold]] {}".format(new_url)
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)
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return hop1_urls
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def save_css(self):
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response = requests.get(self.breezewiki_url)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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css_pages = list()
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for css in soup.find_all("link"):
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if css.attrs.get("href"):
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css_url = urljoin(self.breezewiki_url, css.attrs.get("href"))
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css_pages.append(css_url)
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for page in css_pages:
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response = requests.get(page)
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response.raise_for_status()
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css_filename = self.site_dir.joinpath(
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"proxy{}.css".format(css_pages.index(page))
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)
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with open(css_filename, "wb") as outfile:
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outfile.write(response.content)
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console.print(
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"[[bold green]CSS[/bold green]] {}".format(css_filename)
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)
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def save_img(self, img_url: str):
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filename = self.images_dir.joinpath(
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Path(img_url.split("/revision")[0]).name
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)
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if not filename.exists():
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response = requests.get(img_url, stream=True)
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response.raise_for_status()
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with open(filename, "wb") as outfile:
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for chunk in response.iter_content(chunk_size=8192):
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outfile.write(chunk)
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console.print("[[bold green]IMG[/bold green]] {}".format(filename))
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else:
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console.print(
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"[[bold yellow]IMG (EXISTS)[/bold yellow]] {}".format(filename)
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)
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def fetch_all_images(self, page_url: str):
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response = requests.get(page_url)
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response.raise_for_status()
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soup = BeautifulSoup(response.content, "html.parser")
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img_tags = soup.find_all("img")
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img_urls = [img["src"] for img in img_tags if "src" in img.attrs]
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clean_img_urls = [
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x
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for x in img_urls
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if "breezewiki" not in x and "Wordmark" not in x
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]
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for img_url in clean_img_urls:
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self.save_img(img_url)
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def save_page(self, url: str):
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filename = self.site_dir.joinpath("{}.html".format(url.split("/")[-1]))
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if not filename.exists():
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response = requests.get(url)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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stylesheet_count = 0
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for link in soup.find_all("link", {"rel": "stylesheet"}):
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stylesheet_count += 1
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link.decompose()
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for i in range(stylesheet_count):
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if soup.head:
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soup.head.append(
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soup.new_tag(
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"link",
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rel="stylesheet",
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type="text/css",
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href="proxy{}.css".format(i),
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)
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)
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self.fetch_all_images(url)
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soup.find("div", {"class": "bw-top-banner"}).extract() # type: ignore
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for link in soup.find_all("a"):
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if link.get("href") and link.get("href").startswith(
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"/{}/wiki".format(self.name)
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):
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link_basename = link.get("href").partition("/wiki/")[2]
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link["href"] = "{}/{}.html".format(
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self.site_dir, link_basename
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)
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with open(filename, "w") as outfile:
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outfile.write(soup.prettify())
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console.print(
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"[[bold green]HTML[/bold green]] {}".format(filename)
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)
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else:
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console.print(
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"[[bold yellow]HTML (EXISTS)[/bold yellow]] {}".format(
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filename
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)
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)
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def fetch_all_pages(self, hop1_urls: list):
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self.save_css()
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with concurrent.futures.ThreadPoolExecutor() as executor:
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executor.map(self.save_page, hop1_urls)
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def archive(self):
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timestamp = datetime.now().strftime("%Y%m%d-%H%M%S")
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img_files = [
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f
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for f in self.images_dir.iterdir()
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if self.images_dir.joinpath(f).is_file()
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]
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img_archive_filename = "{}-{}.tar.xz".format(
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self.images_dir, timestamp
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)
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with Progress() as progress:
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task = progress.add_task(
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"[cyan]Archiving images...", total=len(img_files)
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)
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with tarfile.open(img_archive_filename, "w:xz") as tar:
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for img_file in img_files:
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if progress.finished:
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break
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full_file_path = self.images_dir.joinpath(img_file)
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tar.add(full_file_path, arcname=img_file)
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progress.update(task, advance=1)
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progress.stop()
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shutil.rmtree(self.images_dir, ignore_errors=True)
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web_files = [
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f
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for f in self.site_dir.iterdir()
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if self.site_dir.joinpath(f).is_file
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or self.site_dir.joinpath(f).is_dir()
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]
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web_archive_filename = "{}-{}.tar.gz".format(self.site_dir, timestamp)
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with Progress() as progress:
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task = progress.add_task(
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"[cyan]Archiving web files...", total=len(web_files)
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)
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with tarfile.open(web_archive_filename, "w:gz") as tar:
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for web_file in web_files:
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if progress.finished:
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break
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full_file_path = self.site_dir.joinpath(web_file)
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tar.add(full_file_path, arcname=web_file)
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progress.update(task, advance=1)
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progress.stop()
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shutil.rmtree(self.site_dir, ignore_errors=True)
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console.print("\nTotal web files scraped: {}".format(len(web_files)))
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console.print("Total images scraped: {}".format(len(img_files)))
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def archive_site(name: str):
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site = FandomWiki(name)
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site.fetch_all_pages(site.get_hop1_urls(site.get_hop0_urls()))
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site.archive()
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def usage_message():
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supported_wikis = [
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"cyberpunk",
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"dishonored",
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"dragonage",
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"forgottenrealms",
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"masseffect",
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"residentevil",
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]
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wiki_tree = Tree("[green]Fandom Wikis")
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for wiki in supported_wikis:
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wiki_tree.add(wiki)
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console.print("Usage:\n\tarchive-fandom-wiki [[italic]name[/italic]]\n")
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console.print("Example:\n\tarchive-fandom-wiki dishonored\n")
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console.print(wiki_tree)
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if __name__ == "__main__":
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if len(sys.argv) > 1:
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match sys.argv[1]:
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case "cyberpunk":
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archive_site("cyberpunk")
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case "dishonored":
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archive_site("dishonored")
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case "dragonage":
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archive_site("dragonage")
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case "forgottenrealms":
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archive_site("forgottenrealms")
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case "masseffect":
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archive_site("masseffect")
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case "residentevil":
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archive_site("residentevil")
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case _:
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usage_message()
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else:
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usage_message()
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