39 lines
990 B
Python
39 lines
990 B
Python
import io
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from typing import Iterator, Optional
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class StringIteratorIO(io.TextIOBase):
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def __init__(self, iter: Iterator[str]):
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self._iter = iter
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self._buff = ""
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def readable(self) -> bool:
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return True
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def _read1(self, n: Optional[int] = None) -> str:
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while not self._buff:
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try:
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self._buff = next(self._iter)
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except StopIteration:
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break
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ret = self._buff[:n]
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self._buff = self._buff[len(ret) :]
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return ret
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def read(self, n: Optional[int] = None) -> str:
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line = []
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if n is None or n < 0:
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while True:
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m = self._read1()
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if not m:
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break
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line.append(m)
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else:
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while n > 0:
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m = self._read1(n)
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if not m:
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break
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n -= len(m)
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line.append(m)
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return "".join(line)
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