| 122 | |
| 123 | |
| 124 | class _StreamReader: |
| 125 | def __init__(self, obj: Response | str | bytes): |
| 126 | self._ptr: int = 0 |
| 127 | self._text: str | bytes |
| 128 | if isinstance(obj, TextResponse): |
| 129 | self._text, self.encoding = obj.body, obj.encoding |
| 130 | elif isinstance(obj, Response): |
| 131 | self._text, self.encoding = obj.body, "utf-8" |
| 132 | else: |
| 133 | self._text, self.encoding = obj, "utf-8" |
| 134 | self._is_unicode: bool = isinstance(self._text, str) |
| 135 | self._is_first_read: bool = True |
| 136 | |
| 137 | def read(self, n: int = 65535) -> bytes: |
| 138 | method: Callable[[int], bytes] = ( |
| 139 | self._read_unicode if self._is_unicode else self._read_string |
| 140 | ) |
| 141 | result = method(n) |
| 142 | if self._is_first_read: |
| 143 | self._is_first_read = False |
| 144 | result = result.lstrip() |
| 145 | return result |
| 146 | |
| 147 | def _read_string(self, n: int = 65535) -> bytes: |
| 148 | s, e = self._ptr, self._ptr + n |
| 149 | self._ptr = e |
| 150 | return cast("bytes", self._text)[s:e] |
| 151 | |
| 152 | def _read_unicode(self, n: int = 65535) -> bytes: |
| 153 | s, e = self._ptr, self._ptr + n |
| 154 | self._ptr = e |
| 155 | return cast("str", self._text)[s:e].encode("utf-8") |
| 156 | |
| 157 | |
| 158 | def csviter( |