曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露,Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.,终随松柏到冰霜.譖セ荳手珍阯懷酔髮ィ髴イ�檎サ磯囂譚セ譟丞芦蜀ー髴�曾与蒿藜同雨露,鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露,终随松柏到冰霜. rahbord-ins.ir - GrazzMean-Shell
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name : _http_writer.pyx
from cpython.bytes cimport PyBytes_FromStringAndSize
from cpython.exc cimport PyErr_NoMemory
from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
from cpython.object cimport PyObject_Str
from libc.stdint cimport uint8_t, uint64_t
from libc.string cimport memcpy

from multidict import istr

DEF BUF_SIZE = 16 * 1024  # 16KiB
cdef char BUFFER[BUF_SIZE]

cdef object _istr = istr


# ----------------- writer ---------------------------

cdef struct Writer:
    char *buf
    Py_ssize_t size
    Py_ssize_t pos


cdef inline void _init_writer(Writer* writer):
    writer.buf = &BUFFER[0]
    writer.size = BUF_SIZE
    writer.pos = 0


cdef inline void _release_writer(Writer* writer):
    if writer.buf != BUFFER:
        PyMem_Free(writer.buf)


cdef inline int _write_byte(Writer* writer, uint8_t ch):
    cdef char * buf
    cdef Py_ssize_t size

    if writer.pos == writer.size:
        # reallocate
        size = writer.size + BUF_SIZE
        if writer.buf == BUFFER:
            buf = <char*>PyMem_Malloc(size)
            if buf == NULL:
                PyErr_NoMemory()
                return -1
            memcpy(buf, writer.buf, writer.size)
        else:
            buf = <char*>PyMem_Realloc(writer.buf, size)
            if buf == NULL:
                PyErr_NoMemory()
                return -1
        writer.buf = buf
        writer.size = size
    writer.buf[writer.pos] = <char>ch
    writer.pos += 1
    return 0


cdef inline int _write_utf8(Writer* writer, Py_UCS4 symbol):
    cdef uint64_t utf = <uint64_t> symbol

    if utf < 0x80:
        return _write_byte(writer, <uint8_t>utf)
    elif utf < 0x800:
        if _write_byte(writer, <uint8_t>(0xc0 | (utf >> 6))) < 0:
            return -1
        return _write_byte(writer,  <uint8_t>(0x80 | (utf & 0x3f)))
    elif 0xD800 <= utf <= 0xDFFF:
        # surogate pair, ignored
        return 0
    elif utf < 0x10000:
        if _write_byte(writer, <uint8_t>(0xe0 | (utf >> 12))) < 0:
            return -1
        if _write_byte(writer, <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
            return -1
        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
    elif utf > 0x10FFFF:
        # symbol is too large
        return 0
    else:
        if _write_byte(writer,  <uint8_t>(0xf0 | (utf >> 18))) < 0:
            return -1
        if _write_byte(writer,
                       <uint8_t>(0x80 | ((utf >> 12) & 0x3f))) < 0:
           return -1
        if _write_byte(writer,
                       <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
            return -1
        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))


cdef inline int _write_str(Writer* writer, str s):
    cdef Py_UCS4 ch
    for ch in s:
        if _write_utf8(writer, ch) < 0:
            return -1


# --------------- _serialize_headers ----------------------

cdef str to_str(object s):
    typ = type(s)
    if typ is str:
        return <str>s
    elif typ is _istr:
        return PyObject_Str(s)
    elif not isinstance(s, str):
        raise TypeError("Cannot serialize non-str key {!r}".format(s))
    else:
        return str(s)


def _serialize_headers(str status_line, headers):
    cdef Writer writer
    cdef object key
    cdef object val
    cdef bytes ret

    _init_writer(&writer)

    try:
        if _write_str(&writer, status_line) < 0:
            raise
        if _write_byte(&writer, b'\r') < 0:
            raise
        if _write_byte(&writer, b'\n') < 0:
            raise

        for key, val in headers.items():
            if _write_str(&writer, to_str(key)) < 0:
                raise
            if _write_byte(&writer, b':') < 0:
                raise
            if _write_byte(&writer, b' ') < 0:
                raise
            if _write_str(&writer, to_str(val)) < 0:
                raise
            if _write_byte(&writer, b'\r') < 0:
                raise
            if _write_byte(&writer, b'\n') < 0:
                raise

        if _write_byte(&writer, b'\r') < 0:
            raise
        if _write_byte(&writer, b'\n') < 0:
            raise

        return PyBytes_FromStringAndSize(writer.buf, writer.pos)
    finally:
        _release_writer(&writer)
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