[utils] Move codes for handling eval() from iqiyi.py

[youtube-dl] / youtube_dl / extractor / iqiyi.py

diff --git a/youtube_dl/extractor/iqiyi.py b/youtube_dl/extractor/iqiyi.py
index c3e33009a00a5174138c08ae3aec78ae9b7c899a..2b395221077d5f2243f8372167591229a9fa287b 100644 (file)
--- a/youtube_dl/extractor/iqiyi.py
+++ b/youtube_dl/extractor/iqiyi.py
@@ -18,6 +18,7 @@ from ..compat import (
     compat_urllib_parse_urlparse,
 )
 from ..utils import (
+    decode_packed_codes,
     ExtractorError,
     ohdave_rsa_encrypt,
     remove_start,
@@ -126,43 +127,11 @@ class IqiyiSDK(object):
 
 
 class IqiyiSDKInterpreter(object):
-    BASE62_TABLE = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
-
     def __init__(self, sdk_code):
         self.sdk_code = sdk_code
 
-    @classmethod
-    def base62(cls, num):
-        if num == 0:
-            return '0'
-        ret = ''
-        while num:
-            ret = cls.BASE62_TABLE[num % 62] + ret
-            num = num // 62
-        return ret
-
-    def decode_eval_codes(self):
-        self.sdk_code = self.sdk_code[5:-3]
-
-        mobj = re.search(
-            r"'([^']+)',62,(\d+),'([^']+)'\.split\('\|'\),[^,]+,{}",
-            self.sdk_code)
-        obfucasted_code, count, symbols = mobj.groups()
-        count = int(count)
-        symbols = symbols.split('|')
-        symbol_table = {}
-
-        while count:
-            count -= 1
-            b62count = self.base62(count)
-            symbol_table[b62count] = symbols[count] or b62count
-
-        self.sdk_code = re.sub(
-            r'\b(\w+)\b', lambda mobj: symbol_table[mobj.group(0)],
-            obfucasted_code)
-
     def run(self, target, ip, timestamp):
-        self.decode_eval_codes()
+        self.sdk_code = decode_packed_codes(self.sdk_code)
 
         functions = re.findall(r'input=([a-zA-Z0-9]+)\(input', self.sdk_code)