mirror of
https://github.com/wassname/segpy.git
synced 2026-06-27 20:22:56 +08:00
Robert Smallshire
68 lines
1.4 KiB
Python
68 lines
1.4 KiB
Python
import os
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import sys
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EMPTY_BYTE_STRING = b'' if sys.version_info >= (3, 0) else ''
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def seekable(fh):
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"""Determine whether a file-like object supports seeking.
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Args:
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fh: The file-like-object to be tested.
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Returns:
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True if the file supports seeking, otherwise False.
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"""
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try:
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return fh.seekable()
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except AttributeError:
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try:
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pos = fh.tell()
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try:
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fh.seek(0, os.SEEK_END)
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finally:
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fh.seek(pos)
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except AttributeError:
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return False
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return True
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if sys.version_info >= (3, 0):
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long_int = int
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else:
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long_int = long
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if sys.version_info >= (3, 0):
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def byte_string(integers):
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return bytes(integers)
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else:
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def byte_string(integers):
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return ''.join(chr(i) for i in integers)
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if sys.version_info >= (3, 0):
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import reprlib
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reprlib = reprlib # Keep the static analyzer happy
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else:
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import repr as reprlib
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if sys.version_info >= (3, 0):
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izip = zip
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else:
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from itertools import izip
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izip = izip # Keep the static analyzer happy
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if sys.version_info >= (3, 0):
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def four_bytes(byte_str):
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a, b, c, d = byte_str[:4]
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return a, b, c, d
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else:
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def four_bytes(byte_str):
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a = ord(byte_str[0])
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b = ord(byte_str[1])
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c = ord(byte_str[2])
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d = ord(byte_str[3])
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return a, b, c, d
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