quick fix 2

Lib/site-packages/discord/oggparse.py

@@ -0,0 +1,117 @@
+"""
+The MIT License (MIT)
+
+Copyright (c) 2015-present Rapptz
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+"""
+
+from __future__ import annotations
+
+import struct
+
+from typing import TYPE_CHECKING, ClassVar, IO, Generator, Tuple, Optional
+
+from .errors import DiscordException
+
+__all__ = (
+    'OggError',
+    'OggPage',
+    'OggStream',
+)
+
+
+class OggError(DiscordException):
+    """An exception that is thrown for Ogg stream parsing errors."""
+
+    pass
+
+
+# https://tools.ietf.org/html/rfc3533
+# https://tools.ietf.org/html/rfc7845
+
+
+class OggPage:
+    _header: ClassVar[struct.Struct] = struct.Struct('<xBQIIIB')
+    if TYPE_CHECKING:
+        flag: int
+        gran_pos: int
+        serial: int
+        pagenum: int
+        crc: int
+        segnum: int
+
+    def __init__(self, stream: IO[bytes]) -> None:
+        try:
+            header = stream.read(struct.calcsize(self._header.format))
+
+            self.flag, self.gran_pos, self.serial, self.pagenum, self.crc, self.segnum = self._header.unpack(header)
+
+            self.segtable: bytes = stream.read(self.segnum)
+            bodylen = sum(struct.unpack('B' * self.segnum, self.segtable))
+            self.data: bytes = stream.read(bodylen)
+        except Exception:
+            raise OggError('bad data stream') from None
+
+    def iter_packets(self) -> Generator[Tuple[bytes, bool], None, None]:
+        packetlen = offset = 0
+        partial = True
+
+        for seg in self.segtable:
+            if seg == 255:
+                packetlen += 255
+                partial = True
+            else:
+                packetlen += seg
+                yield self.data[offset : offset + packetlen], True
+                offset += packetlen
+                packetlen = 0
+                partial = False
+
+        if partial:
+            yield self.data[offset:], False
+
+
+class OggStream:
+    def __init__(self, stream: IO[bytes]) -> None:
+        self.stream: IO[bytes] = stream
+
+    def _next_page(self) -> Optional[OggPage]:
+        head = self.stream.read(4)
+        if head == b'OggS':
+            return OggPage(self.stream)
+        elif not head:
+            return None
+        else:
+            raise OggError(f'invalid header magic {head}')
+
+    def _iter_pages(self) -> Generator[OggPage, None, None]:
+        page = self._next_page()
+        while page:
+            yield page
+            page = self._next_page()
+
+    def iter_packets(self) -> Generator[bytes, None, None]:
+        partial = b''
+        for page in self._iter_pages():
+            for data, complete in page.iter_packets():
+                partial += data
+                if complete:
+                    yield partial
+                    partial = b''