mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-06-02 03:18:07 +02:00
[youtube] Improve source code quality
This commit is contained in:
Philipp Hagemeister
parent
4ba146f35d
commit
0ca96d48c7
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@ -2,16 +2,16 @@
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import collections
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import errno
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import itertools
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import io
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import itertools
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import json
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import operator
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import os.path
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import re
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import socket
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import string
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import struct
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import traceback
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import xml.etree.ElementTree
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import zlib
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from .common import InfoExtractor, SearchInfoExtractor
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@ -475,7 +475,7 @@ def _extract_signature_function(self, video_id, player_url, slen):
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if ose.errno != errno.EEXIST:
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raise
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write_json_file(cache_spec, cache_fn)
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except Exception as e:
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except Exception:
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tb = traceback.format_exc()
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self._downloader.report_warning(
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u'Writing cache to %r failed: %s' % (cache_fn, tb))
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@ -491,6 +491,8 @@ def _genslice(start, end, step):
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return u's[%s%s%s]' % (starts, ends, steps)
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step = None
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start = '(Never used)' # Quelch pyflakes warnings - start will be
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# set as soon as step is set
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for i, prev in zip(idxs[1:], idxs[:-1]):
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if step is not None:
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if i - prev == step:
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@ -527,7 +529,7 @@ def argidx(varname):
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def interpret_statement(stmt, local_vars, allow_recursion=20):
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if allow_recursion < 0:
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raise ExctractorError(u'Recursion limit reached')
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raise ExtractorError(u'Recursion limit reached')
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if stmt.startswith(u'var '):
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stmt = stmt[len(u'var '):]
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@ -685,7 +687,7 @@ def s32(reader=None):
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v = - ((v ^ 0xffffffff) + 1)
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return v
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def string(reader=None):
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def read_string(reader=None):
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if reader is None:
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reader = code_reader
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slen = u30(reader)
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@ -706,31 +708,31 @@ def read_byte(reader=None):
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return res
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# minor_version + major_version
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_ = read_bytes(2 + 2)
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read_bytes(2 + 2)
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# Constant pool
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int_count = u30()
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for _c in range(1, int_count):
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_ = s32()
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s32()
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uint_count = u30()
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for _c in range(1, uint_count):
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_ = u32()
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u32()
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double_count = u30()
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_ = read_bytes((double_count-1) * 8)
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read_bytes((double_count-1) * 8)
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string_count = u30()
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constant_strings = [u'']
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for _c in range(1, string_count):
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s = string()
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s = read_string()
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constant_strings.append(s)
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namespace_count = u30()
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for _c in range(1, namespace_count):
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_ = read_bytes(1) # kind
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_ = u30() # name
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read_bytes(1) # kind
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u30() # name
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ns_set_count = u30()
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for _c in range(1, ns_set_count):
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count = u30()
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for _c2 in range(count):
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_ = u30()
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u30()
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multiname_count = u30()
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MULTINAME_SIZES = {
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0x07: 2, # QName
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@ -749,13 +751,13 @@ def read_byte(reader=None):
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kind = u30()
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assert kind in MULTINAME_SIZES, u'Invalid multiname kind %r' % kind
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if kind == 0x07:
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namespace_idx = u30()
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u30() # namespace_idx
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name_idx = u30()
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multinames.append(constant_strings[name_idx])
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else:
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multinames.append('[MULTINAME kind: %d]' % kind)
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for _c2 in range(MULTINAME_SIZES[kind]):
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_ = u30()
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u30()
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# Methods
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method_count = u30()
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@ -765,32 +767,32 @@ def read_byte(reader=None):
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method_infos = []
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for method_id in range(method_count):
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param_count = u30()
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_ = u30() # return type
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u30() # return type
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for _ in range(param_count):
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_ = u30() # param type
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_ = u30() # name index (always 0 for youtube)
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u30() # param type
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u30() # name index (always 0 for youtube)
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flags = read_byte()
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if flags & 0x08 != 0:
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# Options present
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option_count = u30()
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for c in range(option_count):
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_ = u30() # val
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_ = read_bytes(1) # kind
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u30() # val
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read_bytes(1) # kind
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if flags & 0x80 != 0:
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# Param names present
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for _ in range(param_count):
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_ = u30() # param name
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u30() # param name
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mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0)
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method_infos.append(mi)
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# Metadata
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metadata_count = u30()
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for _c in range(metadata_count):
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_ = u30() # name
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u30() # name
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item_count = u30()
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for _c2 in range(item_count):
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_ = u30() # key
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_ = u30() # value
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u30() # key
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u30() # value
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def parse_traits_info():
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trait_name_idx = u30()
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@ -799,20 +801,20 @@ def parse_traits_info():
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attrs = kind_full >> 4
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methods = {}
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if kind in [0x00, 0x06]: # Slot or Const
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_ = u30() # Slot id
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type_name_idx = u30()
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u30() # Slot id
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u30() # type_name_idx
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vindex = u30()
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if vindex != 0:
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_ = read_byte() # vkind
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read_byte() # vkind
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elif kind in [0x01, 0x02, 0x03]: # Method / Getter / Setter
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_ = u30() # disp_id
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u30() # disp_id
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method_idx = u30()
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methods[multinames[trait_name_idx]] = method_idx
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elif kind == 0x04: # Class
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_ = u30() # slot_id
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_ = u30() # classi
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u30() # slot_id
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u30() # classi
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elif kind == 0x05: # Function
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_ = u30() # slot_id
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u30() # slot_id
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function_idx = u30()
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methods[function_idx] = multinames[trait_name_idx]
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else:
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@ -821,7 +823,7 @@ def parse_traits_info():
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if attrs & 0x4 != 0: # Metadata present
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metadata_count = u30()
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for _c3 in range(metadata_count):
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_ = u30()
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u30() # metadata index
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return methods
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@ -835,17 +837,17 @@ def parse_traits_info():
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if name_idx == searched_idx:
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# We found the class we're looking for!
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searched_class_id = class_id
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_ = u30() # super_name idx
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u30() # super_name idx
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flags = read_byte()
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if flags & 0x08 != 0: # Protected namespace is present
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protected_ns_idx = u30()
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u30() # protected_ns_idx
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intrf_count = u30()
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for _c2 in range(intrf_count):
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_ = u30()
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_ = u30() # iinit
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u30()
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u30() # iinit
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trait_count = u30()
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for _c2 in range(trait_count):
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_ = parse_traits_info()
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parse_traits_info()
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if searched_class_id is None:
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raise ExtractorError(u'Target class %r not found' %
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@ -854,7 +856,7 @@ def parse_traits_info():
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method_names = {}
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method_idxs = {}
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for class_id in range(class_count):
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_ = u30() # cinit
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u30() # cinit
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trait_count = u30()
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for _c2 in range(trait_count):
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trait_methods = parse_traits_info()
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@ -867,10 +869,10 @@ def parse_traits_info():
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# Scripts
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script_count = u30()
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for _c in range(script_count):
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_ = u30() # init
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u30() # init
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trait_count = u30()
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for _c2 in range(trait_count):
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_ = parse_traits_info()
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parse_traits_info()
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# Method bodies
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method_body_count = u30()
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@ -878,10 +880,10 @@ def parse_traits_info():
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methods = {}
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for _c in range(method_body_count):
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method_idx = u30()
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max_stack = u30()
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u30() # max_stack
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local_count = u30()
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init_scope_depth = u30()
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max_scope_depth = u30()
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u30() # init_scope_depth
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u30() # max_scope_depth
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code_length = u30()
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code = read_bytes(code_length)
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if method_idx in method_idxs:
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@ -889,14 +891,14 @@ def parse_traits_info():
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methods[method_idxs[method_idx]] = m
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exception_count = u30()
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for _c2 in range(exception_count):
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_ = u30() # from
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_ = u30() # to
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_ = u30() # target
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_ = u30() # exc_type
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_ = u30() # var_name
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u30() # from
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u30() # to
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u30() # target
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u30() # exc_type
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u30() # var_name
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trait_count = u30()
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for _c2 in range(trait_count):
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_ = parse_traits_info()
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parse_traits_info()
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assert p + code_reader.tell() == len(code_tag)
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assert len(methods) == len(method_idxs)
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@ -1011,7 +1013,7 @@ def resfunc(args):
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assert isinstance(obj, list)
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stack.append(obj[idx])
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elif opcode == 128: # coerce
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_ = u30(coder)
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u30(coder)
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elif opcode == 133: # coerce_s
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assert isinstance(stack[-1], (type(None), compat_str))
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elif opcode == 164: # modulo
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@ -1055,7 +1057,7 @@ def _decrypt_signature(self, s, video_id, player_url, age_gate=False):
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if self._downloader.params.get('youtube_print_sig_code'):
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self._print_sig_code(func, len(s))
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return func(s)
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except Exception as e:
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except Exception:
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tb = traceback.format_exc()
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self._downloader.report_warning(
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u'Automatic signature extraction failed: ' + tb)
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