1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
# -*- coding: utf-8 -*-
#
# AWL simulator - utility functions
#
# Copyright 2012-2013 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 awlsim.exceptions import *
from awlsim.enumeration import *
import sys
import os
import random
import struct
# isPyPy is True, if the interpreter is PyPy.
isPyPy = "PyPy" in sys.version
# 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 AwlSimError("Failed to detect Python version")
class Logging(object):
enum.start
LOG_NONE = enum.item
LOG_ERROR = enum.item
LOG_INFO = enum.item
LOG_DEBUG = enum.item
enum.end
_loglevel = LOG_INFO
@classmethod
def setLoglevel(cls, loglevel):
if loglevel not in (cls.LOG_NONE,
cls.LOG_ERROR,
cls.LOG_INFO,
cls.LOG_DEBUG):
raise AwlSimError("Invalid log level '%d'" % loglevel)
cls._loglevel = loglevel
@classmethod
def getLoglevel(cls):
return cls._loglevel
@classmethod
def printDebug(cls, text):
if cls._loglevel >= cls.LOG_DEBUG:
sys.stdout.write(text)
sys.stdout.write("\n")
sys.stdout.flush()
@classmethod
def printInfo(cls, text):
if cls._loglevel >= cls.LOG_INFO:
sys.stdout.write(text)
sys.stdout.write("\n")
sys.stdout.flush()
@classmethod
def printError(cls, text):
if cls._loglevel >= cls.LOG_ERROR:
sys.stderr.write(text)
sys.stderr.write("\n")
sys.stderr.flush()
def printDebug(text):
Logging.printDebug(text)
def printInfo(text):
Logging.printInfo(text)
def printError(text):
Logging.printError(text)
# Warning message helper
printWarning = printError
def awlFileRead(filename):
try:
fd = open(filename, "rb")
data = fd.read()
data = data.decode("latin_1")
fd.close()
except (IOError, UnicodeError) as e:
raise AwlParserError("Failed to read '%s': %s" %\
(filename, str(e)))
return data
def awlFileWrite(filename, data):
data = "\r\n".join(data.splitlines()) + "\r\n"
for count in range(1000):
tmpFile = "%s-%d-%d.tmp" %\
(filename, random.randint(0, 0xFFFF), count)
if not os.path.exists(tmpFile):
break
else:
raise AwlParserError("Could not create temporary file")
try:
fd = open(tmpFile, "wb")
fd.write(data.encode("latin_1"))
fd.flush()
fd.close()
if os.name.lower() != "posix":
# Can't use safe rename on non-POSIX.
# Must unlink first.
os.unlink(filename)
os.rename(tmpFile, filename)
except (IOError, OSError, UnicodeError) as e:
raise AwlParserError("Failed to write file:\n" + str(e))
finally:
try:
os.unlink(tmpFile)
except (IOError, OSError):
pass
# Returns the index of a list element, or -1 if not found.
def listIndex(_list, value, start=0, stop=-1):
if stop < 0:
stop = len(_list)
try:
return _list.index(value, start, stop)
except ValueError:
return -1
# Convert an integer list to a human readable string.
# Example: [1, 2, 3] -> "1, 2 or 3"
def listToHumanStr(lst, lastSep="or"):
if not lst:
return ""
string = ", ".join(str(i) for i in lst)
# Replace last comma with 'lastSep'
string = string[::-1].replace(",", lastSep[::-1] + " ", 1)[::-1]
return string
def str2bool(string, default=False):
s = string.lower()
if s in ("true", "yes", "on", "enable", "enabled"):
return True
if s in ("false", "no", "off", "disable", "disabled"):
return False
try:
return bool(int(s, 10))
except ValueError:
return default
# Returns value, if value is a list.
# Otherwise returns a list with value as element.
def toList(value):
if isinstance(value, list):
return value
if isinstance(value, tuple):
return list(value)
return [ value, ]
def pivotDict(inDict):
outDict = {}
for key, value in inDict.items():
if value in outDict:
raise KeyError("Ambiguous key in pivot dict")
outDict[value] = key
return outDict
|