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# -*- coding: utf-8 -*-
#
# AWL simulator - utility functions
#
# Copyright 2012-2016 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
import sys
import os
import os.path
import time
import fractions
import math
import contextlib
# Convenient operating system identifiers
if os.name == "java":
import java.lang.System
__osName = java.lang.System.getProperty("os.name").lower()
osIsWindows = __osName.startswith("windows")
osIsPosix = not osIsWindows
else:
osIsWindows = os.name == "nt" or os.name == "ce"
osIsPosix = os.name == "posix"
# Executable name of the standalone server.
standaloneServerExe = "awlsim-server-module.exe"
# isPyPy is True, if the interpreter is PyPy.
isPyPy = "PyPy" in sys.version
# isJython is True, if the interpreter is Jython.
isJython = sys.platform.lower().startswith("java")
# isIronPython is True, if the interpreter is IronPython
isIronPython = "IronPython" in sys.version
# isCython is True, if the interpreter is Cython
isCython = False #@nocy
#isCython = True #@cy
# isMicroPython is True, if the interpreter is MicroPython
isMicroPython = hasattr(sys, "implementation") and\
sys.implementation.name.lower() == "micropython"
# isWinStandalone is True, if this is a Windows standalone package (py2exe/cx_Freeze)
isWinStandalone = osIsWindows and\
(sys.executable.endswith("awlsim-gui.exe") or\
sys.executable.endswith("awlsim-client.exe") or\
sys.executable.endswith("awlsim-server.exe") or\
sys.executable.endswith(standaloneServerExe) or\
sys.executable.endswith("awlsim-symtab.exe") or\
sys.executable.endswith("awlsim-test.exe"))
# isPy3Compat is True, if the interpreter is Python 3 compatible.
isPy3Compat = sys.version_info[0] == 3
# isPy2Compat is True, if the interpreter is Python 2 compatible.
isPy2Compat = sys.version_info[0] == 2
# Python 2/3 helper selection
def py23(py2, py3):
if isPy3Compat:
return py3
if isPy2Compat:
return py2
raise Exception("Failed to detect Python version")
# Python interpreter name, as string.
if isCython:
pythonInterpreter = "Cython"
elif isPyPy:
pythonInterpreter = "PyPy"
elif isJython:
pythonInterpreter = "Jython"
elif isIronPython:
pythonInterpreter = "IronPython"
elif isMicroPython:
pythonInterpreter = "MicroPython"
elif isWinStandalone:
pythonInterpreter = "Python (standalone)"
else:
pythonInterpreter = "Python"
# input() compatibility.
# Force Python3 behavior
if isPy2Compat:
input = raw_input
# range() compatibility.
# Force Python3 behavior
if isPy2Compat:
range = xrange
# reduce() compatibility.
# Force Python2 behavior
if isPy3Compat:
from functools import reduce
# queue compatibility
# Force Python3 behavior
if isPy2Compat:
import Queue as queue
else:
import queue
# Monotonic time. Returns a float second count.
monotonic_time = getattr(time, "monotonic", time.clock)
# Performance counter time (if available).
perf_monotonic_time = getattr(time, "perf_counter", time.time)
# BlockingIOError dummy
try:
BlockingIOError
except NameError:
class BlockingIOError(BaseException): pass
# ConnectionError dummy
try:
ConnectionError
except NameError:
ConnectionError = OSError
# Import StringIO
if isIronPython and isPy2Compat:
# Workaround for IronPython's buggy io.StringIO
from StringIO import StringIO
else:
from io import StringIO
from io import BytesIO
# str.isalnum() compatibility
# This defines a global function: isalnum(string) ==> bool
if hasattr(str, "isalnum"):
isalnum = lambda s: s.isalnum()
else:
isalnum = lambda s: all(c.isalpha() or c.isdigit() for c in s)
# str.isdecimal() compatibility
# This defines a global function: isdecimal(string) ==> bool
if hasattr(str, "isdecimal"):
isdecimal = lambda s: s.isdecimal()
else:
isdecimal = lambda s: all(c in "0123456789" for c in s)
# gcd() compatibility
# This defines a global function: compat_gcd(a, b) ==> int
if hasattr(math, "gcd"):
compat_gcd = math.gcd
elif hasattr(fractions, "gcd"):
compat_gcd = fractions.gcd
else:
def compat_gcd(a, b):
while b:
(a, b) = (b, a % b)
return a
# contextlib.suppress compatibility
if not hasattr(contextlib, "suppress"):
class _suppress(object):
def __init__(self, *excs):
self._excs = excs
def __enter__(self):
pass
def __exit__(self, exctype, excinst, exctb):
return exctype is not None and issubclass(exctype, self._excs)
contextlib.suppress = _suppress
# Dict items(), keys(), values() compatibility.
# Use Python3 behavior.
dictItems = py23(lambda d: d.viewitems(),
lambda d: d.items())
dictKeys = py23(lambda d: d.viewkeys(),
lambda d: d.keys())
dictValues = py23(lambda d: d.viewvalues(),
lambda d: d.values())
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