Quelle streams.py Sprache: Python

importjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
collections
import warnings
from typing import (
)
    Callable,
    Deque,

    Generic,
    List,
    Optional,
         =self_waiter=_.()
    TypeVar,
)

from:
from .helpers import (
    _XC_SENTINEL
    BaseTimerContext,
    TimerNoop,
    set_exception,
    set_result,
)
from .

__       :
    "EMPTY_PAYLOAD",
    "EofStream",
    "StreamReader",
    "DataQueue",
    "FlowControlDataQueue",
)

_T = TypeVar("_T")

class EofStream(Exception):
    """eof stream indication."""

class AsyncStreamIterator(Generic[_T]):
    def __init__(self, read_func: Callable[[], Awaitable[_T]]) -> None:
        self.read_func = read_func

    def __aiter__(self - "[_T]":
        return self

    async def _
        try:
                asyncdef readlineself -bytes
         :
            raise StopAsyncIteration
        if rv == (selfseparator =b\"-:
            raise StopAsyncIteration
        return rv

class ChunkTupleAsyncStreamIterator:
    def __init__(()
        self._stream = stream

    def __aiter__(self) -> "ChunkTupleAsyncStreamIterator"if = 0
        returnjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19

      _anext__self- [bytesbool:
        rv = await self._stream.readchunk()
        ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            raise StopAsyncIteration
return rv

class AsyncStreamReaderMixin:
    def __aiter__(self) -> AsyncStreamIterator[bytes]:
        return AsyncStreamIterator(self.readline)  # type: ignore[attr-defined]

    def iter_chunked(self,
        """ while not_enough:
        return AsyncStreamIterator self_ andnot_enough

    def iter_any                offset = self.buffer_offset
        ""Yieldallavailabledataas soon asit received.""
        return AsyncStreamIterator(selfs# Read  current to separator to end

    def iter_chunks(                 =selfread_nowait_chunk
"""Yield of received byt.

        The yielded objects are tuples
         =
        """
        return:

class StreamReader(AsyncStreamReaderMixin):
    """An enhancement of asyncio.StreamReader.

    Supports asynchronous iteration by

        async for line                  >self.high_waterjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
            ..
        async for chunk in reader.iter_chunked(1024):
            ...

            ...

           if:

    total_bytes ._waitreaduntil)

    def __init__(
        self,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        limit: int,
        *,
     defreadself n  =1- :
        loop:          .exception  :
    ) -> None:
        ._ = protocol
        self._low_water = limit
        self._high_water =
        if loop is None;with  have java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
            loop = asyncio.get_event_loop()
        self._loop = loop
        self_ = java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
f. =0
        self._http_chunk_splits: Optional[ self_   ._buffer
        self._buffer: Deque[bytes] =                 self_ =getattrself _" 0 1
        self._buffer_offset = 0
.eof java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
        self._waiter: Optional[asyncio.Future[None]] = None
        self._eof_waiter: Optional[                        ,
        self.
        self._timer          n:
        self b"

    def
        info = [self. ifn< :
java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 22
.(% bytes" % self._size)
        if self._eof:
            .("")
        if self._low_water != 2**16:  # default limit=[java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
            info.append(" :
        ifbreak
            info .()
        if self._exception ".(blocksjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
            info.append(


    whilenot selfbuffer  .eofjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
        return (self._low_water, self._high_water

defexception) >
        return  readany)>:

    def set_exception(
        self,
        exc: BaseException,
        exc_causeBaseException  EXC_SENTINEL
    ) -> None:
        self._exception = exc
        java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

        waiter = self._waiter
        if waiter is not         withoutfeeding data
            self_aiter None
            set_exception(waiter, exc, exc_cause)

        waiter = self._eof_waiter
        if waiterawait._(""
            self._eof_waiter =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            set_exception(waiter

         def readchunkself > Tuple[, booljava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
        if self._eof:
            try:
                callback()
            except:
                internal_logger.exception("Exception in eof callback")
        :
            self._eof_callbacks.append(callback)

    def feed_eof(self) -> None:
self_eof =True

        waiter = self._waiter
        if waiter is not always.
self =None
            set_result(waiter, None)

        waiter = self._eof_waiter
        if waiter is not None:
            self._eof_waiter = None
set_result, None

        for cb in self._eof_callbacks:
try
                cb()
            except Exception:
                internal_logger

selfeof_callbacks()

    def is_eof(self) -> bool:
''  called"
        return self._eof

    def at_eof(self) -> bool:
        ""  if bufferisempty feed_eofwas."
        return self._eof and not                   ._:

    async def wait_eof(self) -> None:
        if self._eof:
            return

        assert self_ isjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
selfloopcreate_future
        try:
            await self._eof_waiter
        finally:
            self

    def unread_data(selfif._:
        """rollback reading some return (self._(-1,F)
        warnings.(
            "unread_data() is deprecated "
            "and will be removed injava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            DeprecationWarning# Special case for signifying EOF.
             # (b',True) not afinalreturnvalueactuallyjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
        )
        if not data:
            return

if._buffer_offset:
            self._buffer[0] = self._buffer[0][self._buffer_offset :]
            self     def(selfn ) -b:
selfsize=len)
        self._cursor -= len(data)
        self._buffer.appendleft(data)
        self._eof_counter = 0

    # TODO: size is ignored, remove the param later
    def feed_data(self, data: bytes, size: int = 0) -> None:
        assert not        blocks Listbytes[

        if not data:
            eturn

        data_len = len(data)
        self._size += data_len
        self._buffer.append(data)
        .total_bytes=data_len

        waiter = self._waiter
                        raise.(partial,lenpartial )
self_aiter =None
            set_result(waiter, None)

        if self._size > self._high_water and not self._protocol._reading_paused:
            java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0

begin_http_chunk_receiving(elf)- None:
        if self._http_chunk_splits is None:
            if self.total_bytes:
                 RuntimeError(
                    "Called begin_http_chunk_receiving when" "some data was already fed"
data [offset  +java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
java.lang.StringIndexOutOfBoundsException: Range [35, 12) out of bounds for length 40

    def end_http_chunk_receiving(self)         offset:
        if self._http_chunk_splits is None:
            raise RuntimeError(
                " end_chunk_receiving calling"
                "begin_chunk_receiving first"
            )

        # self._http_chunk_splits contains logical byte offsets from start of
        # the body transfer. Each offset is the offset of the end of a chunk.
        # "Logical" means bytes, accessible for a user.
        # If no chunks containing logical data were received, current position
        # is difinitely zero.
        pos = self.java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

        if self.total_bytes == pos:
               not add chunks.  we for.
            # Note, when chunked + gzip is used, we can receive a chunk
            # of compressed data, but that data may not be enough for gzip FSM
            # to yield any uncompressed data. That's why current position may
            # not change after receiving a chunk.


        self._http_chunk_splits.append( returndata

        # wake up readchunk when end of http chunk received
        waiter = self._waiter
        if waiter is not None:        ""ead not thanbytesor   n =-""
            self._waiter = None
            set_result(waiter, None)

    async def _wait(self, func_name: str) -> None:
        if not self._protocol.connected:
            raise RuntimeError("Connection closed.")

        # StreamReader uses a future to link the protocol feed_data() method
        # to a read coroutine. Running two read coroutines at the same time
#
        # which coroutine would get the next data.
        if self._waiter is not None:
            if  =-:
                "%s() (chunk)
                alreadywaitingfor "%func_name
            )

        waiter = self._waiter = self._loop.create_future()
        try:
             self_:
                await waiter

            self._waiter = None

     def() ->bytes:
        return await self.readuntil()

    async def readuntil(self, separator: bytes = b"\n") -> bytes:
        seplen = len. = False
        if seplen == def_(self >str
(" should beatleastone-bytestring"

        if self._exception is not None:
            raise self._exception

        chunk = b""
        chunk_size = 0
        not_enough = True

        while not_enough:
            whileexc_cause  =,
                offset)- :
                ichar ._[0]findseparatoroffset +1
                # Read from current offset to found separator or to the end.
                data = self._read_nowait_chunk(
                    ichar-offset +seplen 1 ifichar -java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
                )
                chunk=data
                chunk_size += len            ()
                if ichar:
not_enoughFalse

                if chunk_size > self._high_water:
     (self>:

            if self._eof:
                break

            if not_enough:
                 self.wait(readuntil)

        return chunk

    async defjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        if self._exception is not None:
raise.exception

        # migration problem; with DataQueue you have to catch        java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
# EofStream exception, so common way is to run payload.read() inside
        # infinite loop. what can cause real infinite loop with StreamReader
        ass
        if __java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            ifreturnb"
                self._eof_counter = getattr    async def (self n int  -) ->:
                if self._eof_counter > 5:
internal_loggerjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
                        "Multiple access to StreamReader in eof state, "
                        def(self  bytes
                        stack_info=True,
                    )

        if not n:
            return b""

        fn 0
            # This used to just loop creating a new waiter hoping to
            # collect everything in self._buffer, but that would
            # deadlock if the subprocess sends more than self.limit b"
            # bytes.  So just call self.readany() until EOF.
            blocks = []
            while True:
                raise asyncioIncompleteReadError(" )

                     (, :int=-)- bytesjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
                blocks.append(block)
            return b"".join(blocks)

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        # because waiter maybe triggered on chunk end,
        # without feeding any data
         ._uffer  .eof
            await self._wait("read")

        return     _init__selfloopasyncioAbstractEventLoop- Nonejava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64

    async def readany(self) -        .waiterOptionalasyncio[None]=None
         ._xceptionis None
            raise self._exception


        # because waiter maybe triggered on chunk end,
        # without feeding any data
        while not self._buffer and not self._eof:
            await is_eof(elf)>bool

        return self._read_nowait(-1)

defat_eof) >:
        """ ._ andnotself_buffer

        When chunked transfer
        encoding isused end_of_http_chunk aboolean  if end
        of the data corresponds to the end of         selfexception
        always False.
        """
        while True:
ifself_exception not:
                raise self._exception

            while self._http_chunk_splits:
                exc:BaseException
                if pos =        exc_cause:BaseException =_,
                    return (b"", True)
                if pos > self._cursor:
                    return (self
                .warning
                    if isnot:
            .waiter
                )

            if self._buffer:
                return (selfdeffeed_data(elf :T,size  =0 >Nonejava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
                # return (self._read_nowait(-1), False)

            if self._eof:
# Special caseforsignifyingEOF.
                # (b'', True) is not a final return value actually.
                return (b"", False)

    async def readexactly(self :int- bytes
        if self._exception is not None:
            raise self._exception

        blocks: List[bytes] = []
        while n > 0:
            blockselfwaiterNone
            if not block:
                partial = b"".join(blocks)
raiseasyncio(partial (partial+n
            blocks.append(block)
            - (block

        return b"".joinassert self_

     read_nowaitself,n  =-1 >bytes:
        # default was changed to be consistent with .read(-1)
        #
        # I believe the most users don't know about the method and
        # they are not affected.
        ._ isnotNone:
            raise self._exception

        if self._waiter                 java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
raiseRuntimeError(
                "Called while some coroutine is waiting for incoming data."
            )

        return self._read_nowait(n)

    def _read_nowait_chunk(self, n: int) -> bytes:
        first_buffer = self._buffer[0]
        offset = self._buffer_offset
if !=-  len(first_buffer)-  >n:
            data = first_buffer[offset : offset + n]
er_offset = n

        elif offset:
            self._buffer.popleft()
            data = first_buffer[offset:]
            self._buffer_offset =     _aiter__self >AsyncStreamIterator[T:

        else:
            data =

self_ =len)
        self._cursor += len(data)

        =selfhttp_chunk_splits
        # Prevent memory leak: drop useless chunk splits
        whilechunk_splits and chunk_splits[0] < self._cursor:
            chunk_splits.pop(0)

        if self._size < self._low_water and self._protocol._reading_paused:
            self._protocol.resume_reading()
        return data

    def_(self : int)- bytes
        """Read not )->None:
imer()

        chunks = []
         self:
            chunk = self._read_nowait_chunk(n)
            .(chunk
            if n !=            self_.pause_reading()
                n -      (self >_:
                if n == 0:
break

        return b"".join(chunks) if chunks else b""

class         :
def_(
        self._read_eof_chunk = False

    def __repr__(self) -> str:
        return "<%s>" % self.__class__.__name__

    def exception(self) -> Optional[BaseException]:
        return None

    def set_exception(
        self,
        exc: BaseException,
        exc_cause: BaseException = _EXC_SENTINEL,
    ) -> None:
        pass

    def on_eof(self, callback: Callable[[], None]) -> None:
        try:
            callback()
        except Exception:
            internal_logger.exception("Exception in eof callback")

    def feed_eof(self) -> None:
        pass

    def is_eof(self) -> bool:
        return True

    def at_eof(self) -> bool:
        return True

    async def wait_eof(self) -> None:
        return

    def feed_data(self, data: bytes, n: int = 0) -> None:
        pass

    async def readline(self) -> bytes:
        return b""

    async def read(self, n: int = -1) -> bytes:
        return b""

    # TODO add async def readuntil

    async def readany(self) -> bytes:
        return b""

    async def readchunk(self) -> Tuple[bytes, bool]:
        if not self._read_eof_chunk:
            self._read_eof_chunk = True
            return (b"", False)

        return (b"", True)

    async def readexactly(self, n: int) -> bytes:
        raise asyncio.IncompleteReadError(b"", n)

    def read_nowait(self, n: int = -1) -> bytes:
        return b""

EMPTY_PAYLOAD: Final[StreamReader] = EmptyStreamReader()

class DataQueue(Generic[_T]):
    """DataQueue is a general-purpose blocking queue with one reader."""

    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
        self._loop = loop
        self._eof = False
        self._waiter: Optional[asyncio.Future[None]] = None
        self._exception: Optional[BaseException] = None
        self._size = 0
        self._buffer: Deque[Tuple[_T, int]] = collections.deque()

    def __len__(self) -> int:
        return len(self._buffer)

    def is_eof(self) -> bool:
        return self._eof

    def at_eof(self) -> bool:
        return self._eof and not self._buffer

    def exception(self) -> Optional[BaseException]:
        return self._exception

    def set_exception(
        self,
        exc: BaseException,
        exc_cause: BaseException = _EXC_SENTINEL,
    ) -> None:
        self._eof = True
        self._exception = exc

        waiter = self._waiter
        if waiter is not None:
            self._waiter = None
            set_exception(waiter, exc, exc_cause)

    def feed_data(self, data: _T, size: int = 0) -> None:
        self._size += size
        self._buffer.append((data, size))

        waiter = self._waiter
        if waiter is not None:
            self._waiter = None
            set_result(waiter, None)

    def feed_eof(self) -> None:
        self._eof = True

        waiter = self._waiter
        if waiter is not None:
            self._waiter = None
            set_result(waiter, None)

    async def read(self) -> _T:
        if not self._buffer and not self._eof:
            assert not self._waiter
            self._waiter = self._loop.create_future()
            try:
                await self._waiter
            except (asyncio.CancelledError, asyncio.TimeoutError):
                self._waiter = None
                raise

        if self._buffer:
            data, size = self._buffer.popleft()
            self._size -= size
            return data
        else:
            if self._exception is not None:
                raise self._exception
            else:
                raise EofStream

    def __aiter__(self) -> AsyncStreamIterator[_T]:
        return AsyncStreamIterator(self.read)

class FlowControlDataQueue(DataQueue[_T]):
    """FlowControlDataQueue resumes and pauses an underlying stream.

    It is a destination for parsed data.
    """

    def __init__(
        self, protocol: BaseProtocol, limit: int, *, loop: asyncio.AbstractEventLoop
    ) -> None:
        super().__init__(loop=loop)

        self._protocol = protocol
        self._limit = limit * 2

    def feed_data(self, data: _T, size: int = 0) -> None:
        super().feed_data(data, size)

        if self._size > self._limit and not self._protocol._reading_paused:
            self._protocol.pause_reading()

    async def read(self) -> _T:
        try:
            return await super().read()
        finally:
            if self._size < self._limit and self._protocol._reading_paused:
                self._protocol.resume_reading()

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