import os
import re
import sys
+import traceback
import zlib
import email.utils
import json
with open(fn, 'w', encoding='utf-8') as f:
json.dump(obj, f)
-# Some library functions return bytestring on 2.X and unicode on 3.X
-def enforce_unicode(s, encoding='utf-8'):
- if type(s) != type(u''):
- return s.decode(encoding)
- return s
-
def htmlentity_transform(matchobj):
"""Transforms an HTML entity to a character.
else:
return s.encode(sys.getfilesystemencoding(), 'ignore')
-def rsa_verify(message, signature, key):
- from struct import pack
- from hashlib import sha256
- from sys import version_info
- def b(x):
- if version_info[0] == 2: return x
- else: return x.encode('latin1')
- assert(type(message) == type(b('')))
- block_size = 0
- n = key[0]
- while n:
- block_size += 1
- n >>= 8
- signature = pow(int(signature, 16), key[1], key[0])
- raw_bytes = []
- while signature:
- raw_bytes.insert(0, pack("B", signature & 0xFF))
- signature >>= 8
- signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
- if signature[0:2] != b('\x00\x01'): return False
- signature = signature[2:]
- if not b('\x00') in signature: return False
- signature = signature[signature.index(b('\x00'))+1:]
- if not signature.startswith(b('\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20')): return False
- signature = signature[19:]
- if signature != sha256(message).digest(): return False
- return True
+
+class ExtractorError(Exception):
+ """Error during info extraction."""
+ def __init__(self, msg, tb=None):
+ """ tb, if given, is the original traceback (so that it can be printed out). """
+ super(ExtractorError, self).__init__(msg)
+ self.traceback = tb
+
+ 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.