mirror of
https://github.com/ytdl-org/youtube-dl.git
synced 2024-11-18 16:45:38 +01:00
c1c9a79c49
Often, users want to be able to download only videos they haven't seen before, despite the video files having been deleted or moved in the mean time. When --download-archive FILE is given, the extractor and ID of every download is recorded in the specified file. If it is already present, the video in question is skipped.
929 lines
30 KiB
Python
929 lines
30 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import datetime
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import email.utils
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import errno
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import gzip
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import io
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import json
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import locale
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import os
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import platform
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import re
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import socket
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import sys
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import traceback
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import zlib
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try:
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import urllib.request as compat_urllib_request
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except ImportError: # Python 2
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import urllib2 as compat_urllib_request
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try:
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import urllib.error as compat_urllib_error
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except ImportError: # Python 2
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import urllib2 as compat_urllib_error
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try:
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import urllib.parse as compat_urllib_parse
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except ImportError: # Python 2
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import urllib as compat_urllib_parse
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try:
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from urllib.parse import urlparse as compat_urllib_parse_urlparse
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except ImportError: # Python 2
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from urlparse import urlparse as compat_urllib_parse_urlparse
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try:
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import urllib.parse as compat_urlparse
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except ImportError: # Python 2
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import urlparse as compat_urlparse
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try:
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import http.cookiejar as compat_cookiejar
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except ImportError: # Python 2
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import cookielib as compat_cookiejar
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try:
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import html.entities as compat_html_entities
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except ImportError: # Python 2
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import htmlentitydefs as compat_html_entities
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try:
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import html.parser as compat_html_parser
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except ImportError: # Python 2
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import HTMLParser as compat_html_parser
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try:
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import http.client as compat_http_client
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except ImportError: # Python 2
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import httplib as compat_http_client
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try:
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from urllib.error import HTTPError as compat_HTTPError
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except ImportError: # Python 2
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from urllib2 import HTTPError as compat_HTTPError
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try:
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from urllib.request import urlretrieve as compat_urlretrieve
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except ImportError: # Python 2
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from urllib import urlretrieve as compat_urlretrieve
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try:
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from subprocess import DEVNULL
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compat_subprocess_get_DEVNULL = lambda: DEVNULL
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except ImportError:
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compat_subprocess_get_DEVNULL = lambda: open(os.path.devnull, 'w')
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try:
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from urllib.parse import parse_qs as compat_parse_qs
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except ImportError: # Python 2
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# HACK: The following is the correct parse_qs implementation from cpython 3's stdlib.
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# Python 2's version is apparently totally broken
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def _unquote(string, encoding='utf-8', errors='replace'):
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if string == '':
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return string
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res = string.split('%')
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if len(res) == 1:
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return string
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if encoding is None:
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encoding = 'utf-8'
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if errors is None:
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errors = 'replace'
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# pct_sequence: contiguous sequence of percent-encoded bytes, decoded
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pct_sequence = b''
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string = res[0]
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for item in res[1:]:
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try:
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if not item:
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raise ValueError
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pct_sequence += item[:2].decode('hex')
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rest = item[2:]
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if not rest:
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# This segment was just a single percent-encoded character.
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# May be part of a sequence of code units, so delay decoding.
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# (Stored in pct_sequence).
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continue
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except ValueError:
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rest = '%' + item
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# Encountered non-percent-encoded characters. Flush the current
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# pct_sequence.
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string += pct_sequence.decode(encoding, errors) + rest
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pct_sequence = b''
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if pct_sequence:
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# Flush the final pct_sequence
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string += pct_sequence.decode(encoding, errors)
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return string
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def _parse_qsl(qs, keep_blank_values=False, strict_parsing=False,
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encoding='utf-8', errors='replace'):
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qs, _coerce_result = qs, unicode
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pairs = [s2 for s1 in qs.split('&') for s2 in s1.split(';')]
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r = []
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for name_value in pairs:
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if not name_value and not strict_parsing:
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continue
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nv = name_value.split('=', 1)
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if len(nv) != 2:
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if strict_parsing:
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raise ValueError("bad query field: %r" % (name_value,))
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# Handle case of a control-name with no equal sign
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if keep_blank_values:
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nv.append('')
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else:
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continue
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if len(nv[1]) or keep_blank_values:
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name = nv[0].replace('+', ' ')
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name = _unquote(name, encoding=encoding, errors=errors)
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name = _coerce_result(name)
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value = nv[1].replace('+', ' ')
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value = _unquote(value, encoding=encoding, errors=errors)
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value = _coerce_result(value)
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r.append((name, value))
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return r
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def compat_parse_qs(qs, keep_blank_values=False, strict_parsing=False,
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encoding='utf-8', errors='replace'):
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parsed_result = {}
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pairs = _parse_qsl(qs, keep_blank_values, strict_parsing,
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encoding=encoding, errors=errors)
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for name, value in pairs:
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if name in parsed_result:
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parsed_result[name].append(value)
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else:
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parsed_result[name] = [value]
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return parsed_result
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try:
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compat_str = unicode # Python 2
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except NameError:
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compat_str = str
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try:
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compat_chr = unichr # Python 2
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except NameError:
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compat_chr = chr
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def compat_ord(c):
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if type(c) is int: return c
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else: return ord(c)
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# This is not clearly defined otherwise
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compiled_regex_type = type(re.compile(''))
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std_headers = {
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'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20100101 Firefox/10.0',
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'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
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'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'Accept-Encoding': 'gzip, deflate',
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'Accept-Language': 'en-us,en;q=0.5',
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}
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def preferredencoding():
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"""Get preferred encoding.
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Returns the best encoding scheme for the system, based on
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locale.getpreferredencoding() and some further tweaks.
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"""
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try:
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pref = locale.getpreferredencoding()
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u'TEST'.encode(pref)
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except:
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pref = 'UTF-8'
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return pref
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if sys.version_info < (3,0):
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def compat_print(s):
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print(s.encode(preferredencoding(), 'xmlcharrefreplace'))
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else:
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def compat_print(s):
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assert type(s) == type(u'')
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print(s)
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# In Python 2.x, json.dump expects a bytestream.
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# In Python 3.x, it writes to a character stream
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if sys.version_info < (3,0):
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def write_json_file(obj, fn):
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with open(fn, 'wb') as f:
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json.dump(obj, f)
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else:
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def write_json_file(obj, fn):
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with open(fn, 'w', encoding='utf-8') as f:
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json.dump(obj, f)
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if sys.version_info >= (2,7):
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def find_xpath_attr(node, xpath, key, val):
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""" Find the xpath xpath[@key=val] """
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assert re.match(r'^[a-zA-Z]+$', key)
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assert re.match(r'^[a-zA-Z0-9@\s]*$', val)
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expr = xpath + u"[@%s='%s']" % (key, val)
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return node.find(expr)
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else:
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def find_xpath_attr(node, xpath, key, val):
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for f in node.findall(xpath):
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if f.attrib.get(key) == val:
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return f
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return None
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def htmlentity_transform(matchobj):
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"""Transforms an HTML entity to a character.
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This function receives a match object and is intended to be used with
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the re.sub() function.
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"""
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entity = matchobj.group(1)
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# Known non-numeric HTML entity
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if entity in compat_html_entities.name2codepoint:
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return compat_chr(compat_html_entities.name2codepoint[entity])
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mobj = re.match(u'(?u)#(x?\\d+)', entity)
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if mobj is not None:
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numstr = mobj.group(1)
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if numstr.startswith(u'x'):
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base = 16
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numstr = u'0%s' % numstr
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else:
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base = 10
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return compat_chr(int(numstr, base))
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# Unknown entity in name, return its literal representation
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return (u'&%s;' % entity)
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compat_html_parser.locatestarttagend = re.compile(r"""<[a-zA-Z][-.a-zA-Z0-9:_]*(?:\s+(?:(?<=['"\s])[^\s/>][^\s/=>]*(?:\s*=+\s*(?:'[^']*'|"[^"]*"|(?!['"])[^>\s]*))?\s*)*)?\s*""", re.VERBOSE) # backport bugfix
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class BaseHTMLParser(compat_html_parser.HTMLParser):
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def __init(self):
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compat_html_parser.HTMLParser.__init__(self)
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self.html = None
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def loads(self, html):
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self.html = html
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self.feed(html)
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self.close()
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class AttrParser(BaseHTMLParser):
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"""Modified HTMLParser that isolates a tag with the specified attribute"""
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def __init__(self, attribute, value):
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self.attribute = attribute
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self.value = value
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self.result = None
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self.started = False
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self.depth = {}
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self.watch_startpos = False
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self.error_count = 0
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BaseHTMLParser.__init__(self)
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def error(self, message):
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if self.error_count > 10 or self.started:
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raise compat_html_parser.HTMLParseError(message, self.getpos())
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self.rawdata = '\n'.join(self.html.split('\n')[self.getpos()[0]:]) # skip one line
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self.error_count += 1
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self.goahead(1)
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def handle_starttag(self, tag, attrs):
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attrs = dict(attrs)
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if self.started:
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self.find_startpos(None)
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if self.attribute in attrs and attrs[self.attribute] == self.value:
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self.result = [tag]
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self.started = True
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self.watch_startpos = True
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if self.started:
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if not tag in self.depth: self.depth[tag] = 0
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self.depth[tag] += 1
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def handle_endtag(self, tag):
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if self.started:
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if tag in self.depth: self.depth[tag] -= 1
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if self.depth[self.result[0]] == 0:
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self.started = False
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self.result.append(self.getpos())
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def find_startpos(self, x):
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"""Needed to put the start position of the result (self.result[1])
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after the opening tag with the requested id"""
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if self.watch_startpos:
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self.watch_startpos = False
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self.result.append(self.getpos())
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handle_entityref = handle_charref = handle_data = handle_comment = \
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handle_decl = handle_pi = unknown_decl = find_startpos
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def get_result(self):
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if self.result is None:
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return None
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if len(self.result) != 3:
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return None
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lines = self.html.split('\n')
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lines = lines[self.result[1][0]-1:self.result[2][0]]
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lines[0] = lines[0][self.result[1][1]:]
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if len(lines) == 1:
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lines[-1] = lines[-1][:self.result[2][1]-self.result[1][1]]
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lines[-1] = lines[-1][:self.result[2][1]]
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return '\n'.join(lines).strip()
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# Hack for https://github.com/rg3/youtube-dl/issues/662
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if sys.version_info < (2, 7, 3):
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AttrParser.parse_endtag = (lambda self, i:
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i + len("</scr'+'ipt>")
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if self.rawdata[i:].startswith("</scr'+'ipt>")
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else compat_html_parser.HTMLParser.parse_endtag(self, i))
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def get_element_by_id(id, html):
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"""Return the content of the tag with the specified ID in the passed HTML document"""
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return get_element_by_attribute("id", id, html)
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def get_element_by_attribute(attribute, value, html):
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"""Return the content of the tag with the specified attribute in the passed HTML document"""
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parser = AttrParser(attribute, value)
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try:
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parser.loads(html)
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except compat_html_parser.HTMLParseError:
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pass
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return parser.get_result()
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class MetaParser(BaseHTMLParser):
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"""
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Modified HTMLParser that isolates a meta tag with the specified name
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attribute.
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"""
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def __init__(self, name):
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BaseHTMLParser.__init__(self)
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self.name = name
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self.content = None
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self.result = None
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def handle_starttag(self, tag, attrs):
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if tag != 'meta':
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return
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attrs = dict(attrs)
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if attrs.get('name') == self.name:
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self.result = attrs.get('content')
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def get_result(self):
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return self.result
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def get_meta_content(name, html):
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"""
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Return the content attribute from the meta tag with the given name attribute.
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"""
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parser = MetaParser(name)
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try:
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parser.loads(html)
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except compat_html_parser.HTMLParseError:
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pass
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return parser.get_result()
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|
|
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def clean_html(html):
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"""Clean an HTML snippet into a readable string"""
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# Newline vs <br />
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html = html.replace('\n', ' ')
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html = re.sub(r'\s*<\s*br\s*/?\s*>\s*', '\n', html)
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html = re.sub(r'<\s*/\s*p\s*>\s*<\s*p[^>]*>', '\n', html)
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# Strip html tags
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html = re.sub('<.*?>', '', html)
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# Replace html entities
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html = unescapeHTML(html)
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return html.strip()
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|
|
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def sanitize_open(filename, open_mode):
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"""Try to open the given filename, and slightly tweak it if this fails.
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Attempts to open the given filename. If this fails, it tries to change
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the filename slightly, step by step, until it's either able to open it
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or it fails and raises a final exception, like the standard open()
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function.
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It returns the tuple (stream, definitive_file_name).
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"""
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try:
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if filename == u'-':
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if sys.platform == 'win32':
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import msvcrt
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msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
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return (sys.stdout.buffer if hasattr(sys.stdout, 'buffer') else sys.stdout, filename)
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stream = open(encodeFilename(filename), open_mode)
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return (stream, filename)
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except (IOError, OSError) as err:
|
|
if err.errno in (errno.EACCES,):
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raise
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|
|
|
# In case of error, try to remove win32 forbidden chars
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|
alt_filename = os.path.join(
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re.sub(u'[/<>:"\\|\\\\?\\*]', u'#', path_part)
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for path_part in os.path.split(filename)
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)
|
|
if alt_filename == filename:
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raise
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else:
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# An exception here should be caught in the caller
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stream = open(encodeFilename(filename), open_mode)
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return (stream, alt_filename)
|
|
|
|
|
|
def timeconvert(timestr):
|
|
"""Convert RFC 2822 defined time string into system timestamp"""
|
|
timestamp = None
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timetuple = email.utils.parsedate_tz(timestr)
|
|
if timetuple is not None:
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|
timestamp = email.utils.mktime_tz(timetuple)
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|
return timestamp
|
|
|
|
def sanitize_filename(s, restricted=False, is_id=False):
|
|
"""Sanitizes a string so it could be used as part of a filename.
|
|
If restricted is set, use a stricter subset of allowed characters.
|
|
Set is_id if this is not an arbitrary string, but an ID that should be kept if possible
|
|
"""
|
|
def replace_insane(char):
|
|
if char == '?' or ord(char) < 32 or ord(char) == 127:
|
|
return ''
|
|
elif char == '"':
|
|
return '' if restricted else '\''
|
|
elif char == ':':
|
|
return '_-' if restricted else ' -'
|
|
elif char in '\\/|*<>':
|
|
return '_'
|
|
if restricted and (char in '!&\'()[]{}$;`^,#' or char.isspace()):
|
|
return '_'
|
|
if restricted and ord(char) > 127:
|
|
return '_'
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|
return char
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|
|
|
result = u''.join(map(replace_insane, s))
|
|
if not is_id:
|
|
while '__' in result:
|
|
result = result.replace('__', '_')
|
|
result = result.strip('_')
|
|
# Common case of "Foreign band name - English song title"
|
|
if restricted and result.startswith('-_'):
|
|
result = result[2:]
|
|
if not result:
|
|
result = '_'
|
|
return result
|
|
|
|
def orderedSet(iterable):
|
|
""" Remove all duplicates from the input iterable """
|
|
res = []
|
|
for el in iterable:
|
|
if el not in res:
|
|
res.append(el)
|
|
return res
|
|
|
|
def unescapeHTML(s):
|
|
"""
|
|
@param s a string
|
|
"""
|
|
assert type(s) == type(u'')
|
|
|
|
result = re.sub(u'(?u)&(.+?);', htmlentity_transform, s)
|
|
return result
|
|
|
|
def encodeFilename(s):
|
|
"""
|
|
@param s The name of the file
|
|
"""
|
|
|
|
assert type(s) == type(u'')
|
|
|
|
# Python 3 has a Unicode API
|
|
if sys.version_info >= (3, 0):
|
|
return s
|
|
|
|
if sys.platform == 'win32' and sys.getwindowsversion()[0] >= 5:
|
|
# Pass u'' directly to use Unicode APIs on Windows 2000 and up
|
|
# (Detecting Windows NT 4 is tricky because 'major >= 4' would
|
|
# match Windows 9x series as well. Besides, NT 4 is obsolete.)
|
|
return s
|
|
else:
|
|
encoding = sys.getfilesystemencoding()
|
|
if encoding is None:
|
|
encoding = 'utf-8'
|
|
return s.encode(encoding, 'ignore')
|
|
|
|
def decodeOption(optval):
|
|
if optval is None:
|
|
return optval
|
|
if isinstance(optval, bytes):
|
|
optval = optval.decode(preferredencoding())
|
|
|
|
assert isinstance(optval, compat_str)
|
|
return optval
|
|
|
|
def formatSeconds(secs):
|
|
if secs > 3600:
|
|
return '%d:%02d:%02d' % (secs // 3600, (secs % 3600) // 60, secs % 60)
|
|
elif secs > 60:
|
|
return '%d:%02d' % (secs // 60, secs % 60)
|
|
else:
|
|
return '%d' % secs
|
|
|
|
def make_HTTPS_handler(opts):
|
|
if sys.version_info < (3,2):
|
|
# Python's 2.x handler is very simplistic
|
|
return compat_urllib_request.HTTPSHandler()
|
|
else:
|
|
import ssl
|
|
context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
|
|
context.set_default_verify_paths()
|
|
|
|
context.verify_mode = (ssl.CERT_NONE
|
|
if opts.no_check_certificate
|
|
else ssl.CERT_REQUIRED)
|
|
return compat_urllib_request.HTTPSHandler(context=context)
|
|
|
|
class ExtractorError(Exception):
|
|
"""Error during info extraction."""
|
|
def __init__(self, msg, tb=None, expected=False, cause=None):
|
|
""" tb, if given, is the original traceback (so that it can be printed out).
|
|
If expected is set, this is a normal error message and most likely not a bug in youtube-dl.
|
|
"""
|
|
|
|
if sys.exc_info()[0] in (compat_urllib_error.URLError, socket.timeout, UnavailableVideoError):
|
|
expected = True
|
|
if not expected:
|
|
msg = msg + u'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.'
|
|
super(ExtractorError, self).__init__(msg)
|
|
|
|
self.traceback = tb
|
|
self.exc_info = sys.exc_info() # preserve original exception
|
|
self.cause = cause
|
|
|
|
def format_traceback(self):
|
|
if self.traceback is None:
|
|
return None
|
|
return u''.join(traceback.format_tb(self.traceback))
|
|
|
|
|
|
class DownloadError(Exception):
|
|
"""Download Error exception.
|
|
|
|
This exception may be thrown by FileDownloader objects if they are not
|
|
configured to continue on errors. They will contain the appropriate
|
|
error message.
|
|
"""
|
|
def __init__(self, msg, exc_info=None):
|
|
""" exc_info, if given, is the original exception that caused the trouble (as returned by sys.exc_info()). """
|
|
super(DownloadError, self).__init__(msg)
|
|
self.exc_info = exc_info
|
|
|
|
|
|
class SameFileError(Exception):
|
|
"""Same File exception.
|
|
|
|
This exception will be thrown by FileDownloader objects if they detect
|
|
multiple files would have to be downloaded to the same file on disk.
|
|
"""
|
|
pass
|
|
|
|
|
|
class PostProcessingError(Exception):
|
|
"""Post Processing exception.
|
|
|
|
This exception may be raised by PostProcessor's .run() method to
|
|
indicate an error in the postprocessing task.
|
|
"""
|
|
def __init__(self, msg):
|
|
self.msg = msg
|
|
|
|
class MaxDownloadsReached(Exception):
|
|
""" --max-downloads limit has been reached. """
|
|
pass
|
|
|
|
|
|
class UnavailableVideoError(Exception):
|
|
"""Unavailable Format exception.
|
|
|
|
This exception will be thrown when a video is requested
|
|
in a format that is not available for that video.
|
|
"""
|
|
pass
|
|
|
|
|
|
class ContentTooShortError(Exception):
|
|
"""Content Too Short exception.
|
|
|
|
This exception may be raised by FileDownloader objects when a file they
|
|
download is too small for what the server announced first, indicating
|
|
the connection was probably interrupted.
|
|
"""
|
|
# Both in bytes
|
|
downloaded = None
|
|
expected = None
|
|
|
|
def __init__(self, downloaded, expected):
|
|
self.downloaded = downloaded
|
|
self.expected = expected
|
|
|
|
class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
|
|
"""Handler for HTTP requests and responses.
|
|
|
|
This class, when installed with an OpenerDirector, automatically adds
|
|
the standard headers to every HTTP request and handles gzipped and
|
|
deflated responses from web servers. If compression is to be avoided in
|
|
a particular request, the original request in the program code only has
|
|
to include the HTTP header "Youtubedl-No-Compression", which will be
|
|
removed before making the real request.
|
|
|
|
Part of this code was copied from:
|
|
|
|
http://techknack.net/python-urllib2-handlers/
|
|
|
|
Andrew Rowls, the author of that code, agreed to release it to the
|
|
public domain.
|
|
"""
|
|
|
|
@staticmethod
|
|
def deflate(data):
|
|
try:
|
|
return zlib.decompress(data, -zlib.MAX_WBITS)
|
|
except zlib.error:
|
|
return zlib.decompress(data)
|
|
|
|
@staticmethod
|
|
def addinfourl_wrapper(stream, headers, url, code):
|
|
if hasattr(compat_urllib_request.addinfourl, 'getcode'):
|
|
return compat_urllib_request.addinfourl(stream, headers, url, code)
|
|
ret = compat_urllib_request.addinfourl(stream, headers, url)
|
|
ret.code = code
|
|
return ret
|
|
|
|
def http_request(self, req):
|
|
for h,v in std_headers.items():
|
|
if h in req.headers:
|
|
del req.headers[h]
|
|
req.add_header(h, v)
|
|
if 'Youtubedl-no-compression' in req.headers:
|
|
if 'Accept-encoding' in req.headers:
|
|
del req.headers['Accept-encoding']
|
|
del req.headers['Youtubedl-no-compression']
|
|
if 'Youtubedl-user-agent' in req.headers:
|
|
if 'User-agent' in req.headers:
|
|
del req.headers['User-agent']
|
|
req.headers['User-agent'] = req.headers['Youtubedl-user-agent']
|
|
del req.headers['Youtubedl-user-agent']
|
|
return req
|
|
|
|
def http_response(self, req, resp):
|
|
old_resp = resp
|
|
# gzip
|
|
if resp.headers.get('Content-encoding', '') == 'gzip':
|
|
content = resp.read()
|
|
gz = gzip.GzipFile(fileobj=io.BytesIO(content), mode='rb')
|
|
try:
|
|
uncompressed = io.BytesIO(gz.read())
|
|
except IOError as original_ioerror:
|
|
# There may be junk add the end of the file
|
|
# See http://stackoverflow.com/q/4928560/35070 for details
|
|
for i in range(1, 1024):
|
|
try:
|
|
gz = gzip.GzipFile(fileobj=io.BytesIO(content[:-i]), mode='rb')
|
|
uncompressed = io.BytesIO(gz.read())
|
|
except IOError:
|
|
continue
|
|
break
|
|
else:
|
|
raise original_ioerror
|
|
resp = self.addinfourl_wrapper(uncompressed, old_resp.headers, old_resp.url, old_resp.code)
|
|
resp.msg = old_resp.msg
|
|
# deflate
|
|
if resp.headers.get('Content-encoding', '') == 'deflate':
|
|
gz = io.BytesIO(self.deflate(resp.read()))
|
|
resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
|
|
resp.msg = old_resp.msg
|
|
return resp
|
|
|
|
https_request = http_request
|
|
https_response = http_response
|
|
|
|
def unified_strdate(date_str):
|
|
"""Return a string with the date in the format YYYYMMDD"""
|
|
upload_date = None
|
|
#Replace commas
|
|
date_str = date_str.replace(',',' ')
|
|
# %z (UTC offset) is only supported in python>=3.2
|
|
date_str = re.sub(r' (\+|-)[\d]*$', '', date_str)
|
|
format_expressions = [
|
|
'%d %B %Y',
|
|
'%B %d %Y',
|
|
'%b %d %Y',
|
|
'%Y-%m-%d',
|
|
'%d/%m/%Y',
|
|
'%Y/%m/%d %H:%M:%S',
|
|
'%d.%m.%Y %H:%M',
|
|
'%Y-%m-%dT%H:%M:%SZ',
|
|
]
|
|
for expression in format_expressions:
|
|
try:
|
|
upload_date = datetime.datetime.strptime(date_str, expression).strftime('%Y%m%d')
|
|
except:
|
|
pass
|
|
return upload_date
|
|
|
|
def determine_ext(url, default_ext=u'unknown_video'):
|
|
guess = url.partition(u'?')[0].rpartition(u'.')[2]
|
|
if re.match(r'^[A-Za-z0-9]+$', guess):
|
|
return guess
|
|
else:
|
|
return default_ext
|
|
|
|
def subtitles_filename(filename, sub_lang, sub_format):
|
|
return filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
|
|
|
|
def date_from_str(date_str):
|
|
"""
|
|
Return a datetime object from a string in the format YYYYMMDD or
|
|
(now|today)[+-][0-9](day|week|month|year)(s)?"""
|
|
today = datetime.date.today()
|
|
if date_str == 'now'or date_str == 'today':
|
|
return today
|
|
match = re.match('(now|today)(?P<sign>[+-])(?P<time>\d+)(?P<unit>day|week|month|year)(s)?', date_str)
|
|
if match is not None:
|
|
sign = match.group('sign')
|
|
time = int(match.group('time'))
|
|
if sign == '-':
|
|
time = -time
|
|
unit = match.group('unit')
|
|
#A bad aproximation?
|
|
if unit == 'month':
|
|
unit = 'day'
|
|
time *= 30
|
|
elif unit == 'year':
|
|
unit = 'day'
|
|
time *= 365
|
|
unit += 's'
|
|
delta = datetime.timedelta(**{unit: time})
|
|
return today + delta
|
|
return datetime.datetime.strptime(date_str, "%Y%m%d").date()
|
|
|
|
class DateRange(object):
|
|
"""Represents a time interval between two dates"""
|
|
def __init__(self, start=None, end=None):
|
|
"""start and end must be strings in the format accepted by date"""
|
|
if start is not None:
|
|
self.start = date_from_str(start)
|
|
else:
|
|
self.start = datetime.datetime.min.date()
|
|
if end is not None:
|
|
self.end = date_from_str(end)
|
|
else:
|
|
self.end = datetime.datetime.max.date()
|
|
if self.start > self.end:
|
|
raise ValueError('Date range: "%s" , the start date must be before the end date' % self)
|
|
@classmethod
|
|
def day(cls, day):
|
|
"""Returns a range that only contains the given day"""
|
|
return cls(day,day)
|
|
def __contains__(self, date):
|
|
"""Check if the date is in the range"""
|
|
if not isinstance(date, datetime.date):
|
|
date = date_from_str(date)
|
|
return self.start <= date <= self.end
|
|
def __str__(self):
|
|
return '%s - %s' % ( self.start.isoformat(), self.end.isoformat())
|
|
|
|
|
|
def platform_name():
|
|
""" Returns the platform name as a compat_str """
|
|
res = platform.platform()
|
|
if isinstance(res, bytes):
|
|
res = res.decode(preferredencoding())
|
|
|
|
assert isinstance(res, compat_str)
|
|
return res
|
|
|
|
|
|
def write_string(s, out=None):
|
|
if out is None:
|
|
out = sys.stderr
|
|
assert type(s) == type(u'')
|
|
|
|
if ('b' in getattr(out, 'mode', '') or
|
|
sys.version_info[0] < 3): # Python 2 lies about mode of sys.stderr
|
|
s = s.encode(preferredencoding(), 'ignore')
|
|
out.write(s)
|
|
out.flush()
|
|
|
|
|
|
def bytes_to_intlist(bs):
|
|
if not bs:
|
|
return []
|
|
if isinstance(bs[0], int): # Python 3
|
|
return list(bs)
|
|
else:
|
|
return [ord(c) for c in bs]
|
|
|
|
|
|
def intlist_to_bytes(xs):
|
|
if not xs:
|
|
return b''
|
|
if isinstance(chr(0), bytes): # Python 2
|
|
return ''.join([chr(x) for x in xs])
|
|
else:
|
|
return bytes(xs)
|
|
|
|
|
|
def get_cachedir(params={}):
|
|
cache_root = os.environ.get('XDG_CACHE_HOME',
|
|
os.path.expanduser('~/.cache'))
|
|
return params.get('cachedir', os.path.join(cache_root, 'youtube-dl'))
|
|
|
|
|
|
# Cross-platform file locking
|
|
if sys.platform == 'win32':
|
|
import ctypes.wintypes
|
|
import msvcrt
|
|
|
|
class OVERLAPPED(ctypes.Structure):
|
|
_fields_ = [
|
|
('Internal', ctypes.wintypes.LPVOID),
|
|
('InternalHigh', ctypes.wintypes.LPVOID),
|
|
('Offset', ctypes.wintypes.DWORD),
|
|
('OffsetHigh', ctypes.wintypes.DWORD),
|
|
('hEvent', ctypes.wintypes.HANDLE),
|
|
]
|
|
|
|
kernel32 = ctypes.windll.kernel32
|
|
LockFileEx = kernel32.LockFileEx
|
|
LockFileEx.argtypes = [
|
|
ctypes.wintypes.HANDLE, # hFile
|
|
ctypes.wintypes.DWORD, # dwFlags
|
|
ctypes.wintypes.DWORD, # dwReserved
|
|
ctypes.wintypes.DWORD, # nNumberOfBytesToLockLow
|
|
ctypes.wintypes.DWORD, # nNumberOfBytesToLockHigh
|
|
ctypes.POINTER(OVERLAPPED) # Overlapped
|
|
]
|
|
LockFileEx.restype = ctypes.wintypes.BOOL
|
|
UnlockFileEx = kernel32.UnlockFileEx
|
|
UnlockFileEx.argtypes = [
|
|
ctypes.wintypes.HANDLE, # hFile
|
|
ctypes.wintypes.DWORD, # dwReserved
|
|
ctypes.wintypes.DWORD, # nNumberOfBytesToLockLow
|
|
ctypes.wintypes.DWORD, # nNumberOfBytesToLockHigh
|
|
ctypes.POINTER(OVERLAPPED) # Overlapped
|
|
]
|
|
UnlockFileEx.restype = ctypes.wintypes.BOOL
|
|
whole_low = 0xffffffff
|
|
whole_high = 0x7fffffff
|
|
|
|
def _lock_file(f, exclusive):
|
|
overlapped = OVERLAPPED()
|
|
overlapped.Offset = 0
|
|
overlapped.OffsetHigh = 0
|
|
overlapped.hEvent = 0
|
|
f._lock_file_overlapped_p = ctypes.pointer(overlapped)
|
|
handle = msvcrt.get_osfhandle(f.fileno())
|
|
if not LockFileEx(handle, 0x2 if exclusive else 0x0, 0,
|
|
whole_low, whole_high, f._lock_file_overlapped_p):
|
|
raise OSError('Locking file failed: %r' % ctypes.FormatError())
|
|
|
|
def _unlock_file(f):
|
|
assert f._lock_file_overlapped_p
|
|
handle = msvcrt.get_osfhandle(f.fileno())
|
|
if not UnlockFileEx(handle, 0,
|
|
whole_low, whole_high, f._lock_file_overlapped_p):
|
|
raise OSError('Unlocking file failed: %r' % ctypes.FormatError())
|
|
|
|
else:
|
|
import fcntl
|
|
|
|
def _lock_file(f, exclusive):
|
|
fcntl.lockf(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH)
|
|
|
|
def _unlock_file(f):
|
|
fcntl.lockf(f, fcntl.LOCK_UN)
|
|
|
|
|
|
class locked_file(object):
|
|
def __init__(self, filename, mode, encoding=None):
|
|
assert mode in ['r', 'a', 'w']
|
|
self.f = io.open(filename, mode, encoding=encoding)
|
|
self.mode = mode
|
|
|
|
def __enter__(self):
|
|
exclusive = self.mode != 'r'
|
|
try:
|
|
_lock_file(self.f, exclusive)
|
|
except IOError:
|
|
self.f.close()
|
|
raise
|
|
return self
|
|
|
|
def __exit__(self, etype, value, traceback):
|
|
try:
|
|
_unlock_file(self.f)
|
|
finally:
|
|
self.f.close()
|
|
|
|
def __iter__(self):
|
|
return iter(self.f)
|
|
|
|
def write(self, *args):
|
|
return self.f.write(*args)
|
|
|
|
def read(self, *args):
|
|
return self.f.read(*args)
|