[ChangeLog] Actualize

[youtube-dl] / youtube_dl / swfinterp.py

diff --git a/youtube_dl/swfinterp.py b/youtube_dl/swfinterp.py
index 6f3c3bf956bf3191c5206db53af3071994b95d59..0c71585753134e93fba8d8de5cee003d31f050c9 100644 (file)
--- a/youtube_dl/swfinterp.py
+++ b/youtube_dl/swfinterp.py
@@ -4,10 +4,12 @@ import collections
 import io
 import zlib
 
-from .utils import (
+from .compat import (
     compat_str,
+    compat_struct_unpack,
+)
+from .utils import (
     ExtractorError,
-    struct_unpack,
 )
 
 
@@ -23,17 +25,17 @@ def _extract_tags(file_contents):
             file_contents[:1])
 
     # Determine number of bits in framesize rectangle
-    framesize_nbits = struct_unpack('!B', content[:1])[0] >> 3
+    framesize_nbits = compat_struct_unpack('!B', content[:1])[0] >> 3
     framesize_len = (5 + 4 * framesize_nbits + 7) // 8
 
     pos = framesize_len + 2 + 2
     while pos < len(content):
-        header16 = struct_unpack('<H', content[pos:pos + 2])[0]
+        header16 = compat_struct_unpack('<H', content[pos:pos + 2])[0]
         pos += 2
         tag_code = header16 >> 6
         tag_len = header16 & 0x3f
         if tag_len == 0x3f:
-            tag_len = struct_unpack('<I', content[pos:pos + 4])[0]
+            tag_len = compat_struct_unpack('<I', content[pos:pos + 4])[0]
             pos += 4
         assert pos + tag_len <= len(content), \
             ('Tag %d ends at %d+%d - that\'s longer than the file (%d)'
@@ -101,7 +103,7 @@ def _read_int(reader):
     for _ in range(5):
         buf = reader.read(1)
         assert len(buf) == 1
-        b = struct_unpack('<B', buf)[0]
+        b = compat_struct_unpack('<B', buf)[0]
         res = res | ((b & 0x7f) << shift)
         if b & 0x80 == 0:
             break
@@ -113,6 +115,8 @@ def _u30(reader):
     res = _read_int(reader)
     assert res & 0xf0000000 == 0
     return res
+
+
 _u32 = _read_int
 
 
@@ -127,7 +131,7 @@ def _s24(reader):
     bs = reader.read(3)
     assert len(bs) == 3
     last_byte = b'\xff' if (ord(bs[2:3]) >= 0x80) else b'\x00'
-    return struct_unpack('<i', bs + last_byte)[0]
+    return compat_struct_unpack('<i', bs + last_byte)[0]
 
 
 def _read_string(reader):
@@ -146,7 +150,7 @@ def _read_bytes(count, reader):
 
 def _read_byte(reader):
     resb = _read_bytes(1, reader=reader)
-    res = struct_unpack('<B', resb)[0]
+    res = compat_struct_unpack('<B', resb)[0]
     return res
 
 
@@ -170,6 +174,11 @@ class _Undefined(object):
     def __hash__(self):
         return 0
 
+    def __str__(self):
+        return 'undefined'
+    __repr__ = __str__
+
+
 undefined = _Undefined()
 
 
@@ -685,7 +694,8 @@ class SWFInterpreter(object):
                     elif mname in _builtin_classes:
                         res = _builtin_classes[mname]
                     else:
-                        # Assume unitialized
+                        # Assume uninitialized
+                        # TODO warn here
                         res = undefined
                     stack.append(res)
                 elif opcode == 97:  # setproperty
@@ -822,4 +832,3 @@ class SWFInterpreter(object):
 
         avm_class.method_pyfunctions[func_name] = resfunc
         return resfunc
-