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archivebox/util.py
2017-10-18 17:39:09 -05:00

216 lines
8.4 KiB
Python

import os
import sys
import time
import requests
from datetime import datetime
from subprocess import run, PIPE, DEVNULL
from multiprocessing import Process
from config import (
ARCHIVE_PERMISSIONS,
ARCHIVE_DIR,
TIMEOUT,
TERM_WIDTH,
SHOW_PROGRESS,
ANSI,
CHROME_BINARY,
FETCH_WGET,
FETCH_PDF,
FETCH_SCREENSHOT,
FETCH_FAVICON,
FETCH_AUDIO,
FETCH_VIDEO,
SUBMIT_ARCHIVE_DOT_ORG,
)
def check_dependencies():
"""Check that all necessary dependencies are installed, and have valid versions"""
print('[*] Checking Dependencies:')
python_vers = float('{}.{}'.format(sys.version_info.major, sys.version_info.minor))
if python_vers < 3.5:
print('{}[X] Python version is not new enough: {} (>3.5 is required){}'.format(ANSI['red'], python_vers, ANSI['reset']))
print(' See https://github.com/pirate/bookmark-archiver#troubleshooting for help upgrading your Python installation.')
raise SystemExit(1)
if FETCH_PDF or FETCH_SCREENSHOT:
if run(['which', CHROME_BINARY]).returncode:
print('{}[X] Missing dependency: {}{}'.format(ANSI['red'], CHROME_BINARY, ANSI['reset']))
print(' Run ./setup.sh, then confirm it was installed with: {} --version'.format(CHROME_BINARY))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
# parse chrome --version e.g. Google Chrome 61.0.3114.0 canary / Chromium 59.0.3029.110 built on Ubuntu, running on Ubuntu 16.04
try:
result = run([CHROME_BINARY, '--version'], stdout=PIPE)
version = result.stdout.decode('utf-8').replace('Google Chrome ', '').replace('Chromium ', '').split(' ', 1)[0].split('.', 1)[0] # TODO: regex might be better
if int(version) < 59:
print('{red}[X] Chrome version must be 59 or greater for headless PDF and screenshot saving{reset}'.format(**ANSI))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
except (TypeError, OSError):
print('{red}[X] Failed to parse Chrome version, is it installed properly?{reset}'.format(**ANSI))
print(' Run ./setup.sh, then confirm it was installed with: {} --version'.format(CHROME_BINARY))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
if FETCH_WGET:
if run(['which', 'wget']).returncode or run(['wget', '--version'], stdout=DEVNULL).returncode:
print('{red}[X] Missing dependency: wget{reset}'.format(**ANSI))
print(' Run ./setup.sh, then confirm it was installed with: {} --version'.format('wget'))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
if FETCH_FAVICON or SUBMIT_ARCHIVE_DOT_ORG:
if run(['which', 'curl']).returncode or run(['curl', '--version'], stdout=DEVNULL).returncode:
print('{red}[X] Missing dependency: curl{reset}'.format(**ANSI))
print(' Run ./setup.sh, then confirm it was installed with: {} --version'.format('curl'))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
if FETCH_AUDIO or FETCH_VIDEO:
if run(['which', 'youtube-dl']).returncode or run(['youtube-dl', '--version'], stdout=DEVNULL).returncode:
print('{red}[X] Missing dependency: youtube-dl{reset}'.format(**ANSI))
print(' Run ./setup.sh, then confirm it was installed with: {} --version'.format('youtube-dl'))
print(' See https://github.com/pirate/bookmark-archiver for help.')
raise SystemExit(1)
def chmod_file(path, cwd='.', permissions=ARCHIVE_PERMISSIONS, timeout=30):
"""chmod -R <permissions> <cwd>/<path>"""
if not os.path.exists(os.path.join(cwd, path)):
raise Exception('Failed to chmod: {} does not exist (did the previous step fail?)'.format(path))
chmod_result = run(['chmod', '-R', permissions, path], cwd=cwd, stdout=DEVNULL, stderr=PIPE, timeout=timeout)
if chmod_result.returncode == 1:
print(' ', chmod_result.stderr.decode())
raise Exception('Failed to chmod {}/{}'.format(cwd, path))
def progress(seconds=TIMEOUT, prefix=''):
"""Show a (subprocess-controlled) progress bar with a <seconds> timeout,
returns end() function to instantly finish the progress
"""
if not SHOW_PROGRESS:
return lambda: None
chunk = '' if sys.stdout.encoding == 'UTF-8' else '#'
chunks = TERM_WIDTH - len(prefix) - 20 # number of progress chunks to show (aka max bar width)
def progress_bar(seconds=seconds, prefix=prefix):
"""show timer in the form of progress bar, with percentage and seconds remaining"""
try:
for s in range(seconds * chunks):
progress = s / chunks / seconds * 100
bar_width = round(progress/(100/chunks))
# ████████████████████ 0.9% (1/60sec)
sys.stdout.write('\r{0}{1}{2}{3} {4}% ({5}/{6}sec)'.format(
prefix,
ANSI['green'],
(chunk * bar_width).ljust(chunks),
ANSI['reset'],
round(progress, 1),
round(s/chunks),
seconds,
))
sys.stdout.flush()
time.sleep(1 / chunks)
# ██████████████████████████████████ 100.0% (60/60sec)
sys.stdout.write('\r{0}{1}{2}{3} {4}% ({5}/{6}sec)\n'.format(
prefix,
ANSI['red'],
chunk * chunks,
ANSI['reset'],
100.0,
seconds,
seconds,
))
sys.stdout.flush()
except KeyboardInterrupt:
print()
pass
p = Process(target=progress_bar)
p.start()
def end():
"""immediately finish progress and clear the progressbar line"""
p.terminate()
sys.stdout.write('\r{}{}\r'.format((' ' * TERM_WIDTH), ANSI['reset'])) # clear whole terminal line
sys.stdout.flush()
return end
def download_url(url):
if not os.path.exists(os.path.join(ARCHIVE_DIR, 'downloads')):
os.makedirs(os.path.join(ARCHIVE_DIR, 'downloads'))
url_domain = url.split('/', 3)[2]
output_path = os.path.join(ARCHIVE_DIR, 'downloads', '{}.txt'.format(url_domain))
print('[*] [{}] Downloading {} > {}'.format(
datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
url,
output_path,
))
end = progress(TIMEOUT, prefix=' ')
try:
downloaded_xml = requests.get(url).content.decode()
end()
except Exception as e:
end()
print('[!] Failed to download {}\n'.format(url))
print(' ', e)
raise SystemExit(1)
with open(output_path, 'w', encoding='utf-8') as f:
f.write(downloaded_xml)
return output_path
def get_str_between(string, start, end=None):
"""(<abc>12345</def>, <abc>, </def>) -> 12345"""
content = string.split(start, 1)[-1]
if end is not None:
content = content.rsplit(end, 1)[0]
return content
def get_link_type(link):
"""Certain types of links need to be handled specially, this figures out when that's the case"""
if link['base_url'].endswith('.pdf'):
return 'PDF'
elif link['base_url'].rsplit('.', 1) in ('pdf', 'png', 'jpg', 'jpeg', 'svg', 'bmp', 'gif', 'tiff', 'webp'):
return 'image'
elif 'wikipedia.org' in link['domain']:
return 'wiki'
elif 'youtube.com' in link['domain']:
return 'youtube'
elif 'soundcloud.com' in link['domain']:
return 'soundcloud'
elif 'youku.com' in link['domain']:
return 'youku'
elif 'vimeo.com' in link['domain']:
return 'vimeo'
return None
# URL helpers
without_scheme = lambda url: url.replace('http://', '').replace('https://', '').replace('ftp://', '')
without_query = lambda url: url.split('?', 1)[0]
without_hash = lambda url: url.split('#', 1)[0]
without_path = lambda url: url.split('/', 1)[0]
domain = lambda url: without_hash(without_query(without_path(without_scheme(url))))
base_url = lambda url: without_query(without_scheme(url))