Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/click/_compat.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
parents
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0
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1 import re
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2 import io
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3 import os
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4 import sys
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5 import codecs
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6 from weakref import WeakKeyDictionary
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7
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8 import click
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9
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10
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11 PY2 = sys.version_info[0] == 2
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12 WIN = sys.platform.startswith('win')
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13 DEFAULT_COLUMNS = 80
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14
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15
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16 _ansi_re = re.compile('\033\[((?:\d|;)*)([a-zA-Z])')
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17
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18
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19 def _find_unicode_literals_frame():
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20 import __future__
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21 frm = sys._getframe(1)
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22 idx = 1
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23 while frm is not None:
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24 if frm.f_globals.get('__name__', '').startswith('click.'):
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25 frm = frm.f_back
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26 idx += 1
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27 elif frm.f_code.co_flags & __future__.unicode_literals.compiler_flag:
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28 return idx
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29 else:
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30 break
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31 return 0
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32
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33
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34 def _check_for_unicode_literals():
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35 if not __debug__:
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36 return
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37 if not PY2 or click.disable_unicode_literals_warning:
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38 return
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39 bad_frame = _find_unicode_literals_frame()
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40 if bad_frame <= 0:
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41 return
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42 from warnings import warn
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43 warn(Warning('Click detected the use of the unicode_literals '
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44 '__future__ import. This is heavily discouraged '
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45 'because it can introduce subtle bugs in your '
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46 'code. You should instead use explicit u"" literals '
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47 'for your unicode strings. For more information see '
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48 'http://click.pocoo.org/python3/'),
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49 stacklevel=bad_frame)
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50
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51
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52 def get_filesystem_encoding():
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53 return sys.getfilesystemencoding() or sys.getdefaultencoding()
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54
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55
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56 def _make_text_stream(stream, encoding, errors):
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57 if encoding is None:
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58 encoding = get_best_encoding(stream)
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59 if errors is None:
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60 errors = 'replace'
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61 return _NonClosingTextIOWrapper(stream, encoding, errors,
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62 line_buffering=True)
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63
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64
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65 def is_ascii_encoding(encoding):
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66 """Checks if a given encoding is ascii."""
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67 try:
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68 return codecs.lookup(encoding).name == 'ascii'
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69 except LookupError:
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70 return False
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71
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72
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73 def get_best_encoding(stream):
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74 """Returns the default stream encoding if not found."""
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75 rv = getattr(stream, 'encoding', None) or sys.getdefaultencoding()
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76 if is_ascii_encoding(rv):
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77 return 'utf-8'
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78 return rv
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79
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80
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81 class _NonClosingTextIOWrapper(io.TextIOWrapper):
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82
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83 def __init__(self, stream, encoding, errors, **extra):
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84 self._stream = stream = _FixupStream(stream)
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85 io.TextIOWrapper.__init__(self, stream, encoding, errors, **extra)
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86
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87 # The io module is a place where the Python 3 text behavior
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88 # was forced upon Python 2, so we need to unbreak
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89 # it to look like Python 2.
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90 if PY2:
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91 def write(self, x):
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92 if isinstance(x, str) or is_bytes(x):
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93 try:
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94 self.flush()
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95 except Exception:
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96 pass
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97 return self.buffer.write(str(x))
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98 return io.TextIOWrapper.write(self, x)
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99
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100 def writelines(self, lines):
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101 for line in lines:
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102 self.write(line)
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103
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104 def __del__(self):
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105 try:
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106 self.detach()
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107 except Exception:
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108 pass
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109
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110 def isatty(self):
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111 # https://bitbucket.org/pypy/pypy/issue/1803
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112 return self._stream.isatty()
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113
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114
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115 class _FixupStream(object):
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116 """The new io interface needs more from streams than streams
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117 traditionally implement. As such, this fix-up code is necessary in
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118 some circumstances.
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119 """
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120
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121 def __init__(self, stream):
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122 self._stream = stream
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123
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124 def __getattr__(self, name):
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125 return getattr(self._stream, name)
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126
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127 def read1(self, size):
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128 f = getattr(self._stream, 'read1', None)
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129 if f is not None:
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130 return f(size)
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131 # We only dispatch to readline instead of read in Python 2 as we
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132 # do not want cause problems with the different implementation
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133 # of line buffering.
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134 if PY2:
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135 return self._stream.readline(size)
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136 return self._stream.read(size)
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137
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138 def readable(self):
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139 x = getattr(self._stream, 'readable', None)
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140 if x is not None:
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141 return x()
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142 try:
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143 self._stream.read(0)
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144 except Exception:
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145 return False
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146 return True
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147
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148 def writable(self):
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149 x = getattr(self._stream, 'writable', None)
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150 if x is not None:
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151 return x()
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152 try:
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153 self._stream.write('')
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154 except Exception:
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155 try:
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156 self._stream.write(b'')
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157 except Exception:
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158 return False
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159 return True
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160
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161 def seekable(self):
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162 x = getattr(self._stream, 'seekable', None)
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163 if x is not None:
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164 return x()
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165 try:
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166 self._stream.seek(self._stream.tell())
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167 except Exception:
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168 return False
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169 return True
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170
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171
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172 if PY2:
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173 text_type = unicode
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174 bytes = str
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175 raw_input = raw_input
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176 string_types = (str, unicode)
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177 iteritems = lambda x: x.iteritems()
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178 range_type = xrange
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179
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180 def is_bytes(x):
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181 return isinstance(x, (buffer, bytearray))
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182
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183 _identifier_re = re.compile(r'^[a-zA-Z_][a-zA-Z0-9_]*$')
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184
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185 # For Windows, we need to force stdout/stdin/stderr to binary if it's
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186 # fetched for that. This obviously is not the most correct way to do
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187 # it as it changes global state. Unfortunately, there does not seem to
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188 # be a clear better way to do it as just reopening the file in binary
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189 # mode does not change anything.
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190 #
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191 # An option would be to do what Python 3 does and to open the file as
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192 # binary only, patch it back to the system, and then use a wrapper
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193 # stream that converts newlines. It's not quite clear what's the
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194 # correct option here.
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195 if WIN:
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196 import msvcrt
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197 def set_binary_mode(f):
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198 try:
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199 fileno = f.fileno()
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200 except Exception:
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201 pass
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202 else:
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203 msvcrt.setmode(fileno, os.O_BINARY)
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204 return f
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205 else:
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206 set_binary_mode = lambda x: x
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207
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208 def isidentifier(x):
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209 return _identifier_re.search(x) is not None
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210
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211 def get_binary_stdin():
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212 return set_binary_mode(sys.stdin)
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213
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214 def get_binary_stdout():
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215 return set_binary_mode(sys.stdout)
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216
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217 def get_binary_stderr():
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218 return set_binary_mode(sys.stderr)
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219
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220 def get_text_stdin(encoding=None, errors=None):
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221 return _make_text_stream(sys.stdin, encoding, errors)
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222
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223 def get_text_stdout(encoding=None, errors=None):
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224 return _make_text_stream(sys.stdout, encoding, errors)
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225
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226 def get_text_stderr(encoding=None, errors=None):
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227 return _make_text_stream(sys.stderr, encoding, errors)
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228
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229 def filename_to_ui(value):
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230 if isinstance(value, bytes):
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231 value = value.decode(get_filesystem_encoding(), 'replace')
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232 return value
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233 else:
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234 import io
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235 text_type = str
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236 raw_input = input
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237 string_types = (str,)
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238 range_type = range
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239 isidentifier = lambda x: x.isidentifier()
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240 iteritems = lambda x: iter(x.items())
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241
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242 def is_bytes(x):
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243 return isinstance(x, (bytes, memoryview, bytearray))
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244
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245 def _is_binary_reader(stream, default=False):
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246 try:
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247 return isinstance(stream.read(0), bytes)
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248 except Exception:
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249 return default
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250 # This happens in some cases where the stream was already
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251 # closed. In this case, we assume the default.
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252
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253 def _is_binary_writer(stream, default=False):
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254 try:
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255 stream.write(b'')
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256 except Exception:
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257 try:
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258 stream.write('')
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259 return False
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260 except Exception:
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261 pass
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262 return default
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263 return True
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264
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265 def _find_binary_reader(stream):
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266 # We need to figure out if the given stream is already binary.
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267 # This can happen because the official docs recommend detaching
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268 # the streams to get binary streams. Some code might do this, so
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269 # we need to deal with this case explicitly.
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270 if _is_binary_reader(stream, False):
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271 return stream
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272
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273 buf = getattr(stream, 'buffer', None)
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274
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275 # Same situation here; this time we assume that the buffer is
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276 # actually binary in case it's closed.
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277 if buf is not None and _is_binary_reader(buf, True):
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278 return buf
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279
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280 def _find_binary_writer(stream):
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281 # We need to figure out if the given stream is already binary.
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282 # This can happen because the official docs recommend detatching
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283 # the streams to get binary streams. Some code might do this, so
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284 # we need to deal with this case explicitly.
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285 if _is_binary_writer(stream, False):
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286 return stream
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287
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288 buf = getattr(stream, 'buffer', None)
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289
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290 # Same situation here; this time we assume that the buffer is
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291 # actually binary in case it's closed.
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292 if buf is not None and _is_binary_writer(buf, True):
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293 return buf
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294
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295 def _stream_is_misconfigured(stream):
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296 """A stream is misconfigured if its encoding is ASCII."""
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297 # If the stream does not have an encoding set, we assume it's set
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298 # to ASCII. This appears to happen in certain unittest
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299 # environments. It's not quite clear what the correct behavior is
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300 # but this at least will force Click to recover somehow.
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301 return is_ascii_encoding(getattr(stream, 'encoding', None) or 'ascii')
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302
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303 def _is_compatible_text_stream(stream, encoding, errors):
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304 stream_encoding = getattr(stream, 'encoding', None)
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305 stream_errors = getattr(stream, 'errors', None)
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306
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307 # Perfect match.
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308 if stream_encoding == encoding and stream_errors == errors:
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309 return True
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310
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311 # Otherwise, it's only a compatible stream if we did not ask for
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312 # an encoding.
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313 if encoding is None:
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314 return stream_encoding is not None
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315
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316 return False
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317
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318 def _force_correct_text_reader(text_reader, encoding, errors):
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319 if _is_binary_reader(text_reader, False):
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320 binary_reader = text_reader
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321 else:
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322 # If there is no target encoding set, we need to verify that the
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323 # reader is not actually misconfigured.
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324 if encoding is None and not _stream_is_misconfigured(text_reader):
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325 return text_reader
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326
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327 if _is_compatible_text_stream(text_reader, encoding, errors):
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328 return text_reader
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329
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330 # If the reader has no encoding, we try to find the underlying
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331 # binary reader for it. If that fails because the environment is
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332 # misconfigured, we silently go with the same reader because this
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333 # is too common to happen. In that case, mojibake is better than
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334 # exceptions.
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335 binary_reader = _find_binary_reader(text_reader)
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336 if binary_reader is None:
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337 return text_reader
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338
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339 # At this point, we default the errors to replace instead of strict
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340 # because nobody handles those errors anyways and at this point
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341 # we're so fundamentally fucked that nothing can repair it.
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342 if errors is None:
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343 errors = 'replace'
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344 return _make_text_stream(binary_reader, encoding, errors)
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345
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346 def _force_correct_text_writer(text_writer, encoding, errors):
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347 if _is_binary_writer(text_writer, False):
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348 binary_writer = text_writer
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349 else:
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350 # If there is no target encoding set, we need to verify that the
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351 # writer is not actually misconfigured.
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352 if encoding is None and not _stream_is_misconfigured(text_writer):
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353 return text_writer
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354
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355 if _is_compatible_text_stream(text_writer, encoding, errors):
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356 return text_writer
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357
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358 # If the writer has no encoding, we try to find the underlying
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359 # binary writer for it. If that fails because the environment is
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360 # misconfigured, we silently go with the same writer because this
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361 # is too common to happen. In that case, mojibake is better than
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362 # exceptions.
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363 binary_writer = _find_binary_writer(text_writer)
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364 if binary_writer is None:
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365 return text_writer
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366
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367 # At this point, we default the errors to replace instead of strict
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368 # because nobody handles those errors anyways and at this point
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369 # we're so fundamentally fucked that nothing can repair it.
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370 if errors is None:
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371 errors = 'replace'
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372 return _make_text_stream(binary_writer, encoding, errors)
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373
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374 def get_binary_stdin():
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375 reader = _find_binary_reader(sys.stdin)
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376 if reader is None:
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377 raise RuntimeError('Was not able to determine binary '
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378 'stream for sys.stdin.')
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379 return reader
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380
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381 def get_binary_stdout():
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382 writer = _find_binary_writer(sys.stdout)
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383 if writer is None:
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384 raise RuntimeError('Was not able to determine binary '
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385 'stream for sys.stdout.')
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386 return writer
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387
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388 def get_binary_stderr():
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389 writer = _find_binary_writer(sys.stderr)
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390 if writer is None:
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391 raise RuntimeError('Was not able to determine binary '
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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392 'stream for sys.stderr.')
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393 return writer
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394
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395 def get_text_stdin(encoding=None, errors=None):
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396 return _force_correct_text_reader(sys.stdin, encoding, errors)
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397
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398 def get_text_stdout(encoding=None, errors=None):
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399 return _force_correct_text_writer(sys.stdout, encoding, errors)
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400
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401 def get_text_stderr(encoding=None, errors=None):
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402 return _force_correct_text_writer(sys.stderr, encoding, errors)
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403
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404 def filename_to_ui(value):
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405 if isinstance(value, bytes):
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406 value = value.decode(get_filesystem_encoding(), 'replace')
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407 else:
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408 value = value.encode('utf-8', 'surrogateescape') \
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409 .decode('utf-8', 'replace')
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410 return value
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411
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412
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413 def get_streerror(e, default=None):
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414 if hasattr(e, 'strerror'):
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415 msg = e.strerror
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416 else:
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417 if default is not None:
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418 msg = default
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419 else:
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420 msg = str(e)
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421 if isinstance(msg, bytes):
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422 msg = msg.decode('utf-8', 'replace')
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423 return msg
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424
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425
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426 def open_stream(filename, mode='r', encoding=None, errors='strict',
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427 atomic=False):
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428 # Standard streams first. These are simple because they don't need
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429 # special handling for the atomic flag. It's entirely ignored.
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430 if filename == '-':
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431 if 'w' in mode:
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432 if 'b' in mode:
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433 return get_binary_stdout(), False
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434 return get_text_stdout(encoding=encoding, errors=errors), False
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435 if 'b' in mode:
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436 return get_binary_stdin(), False
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437 return get_text_stdin(encoding=encoding, errors=errors), False
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438
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439 # Non-atomic writes directly go out through the regular open functions.
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440 if not atomic:
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441 if encoding is None:
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442 return open(filename, mode), True
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443 return io.open(filename, mode, encoding=encoding, errors=errors), True
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444
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445 # Some usability stuff for atomic writes
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446 if 'a' in mode:
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447 raise ValueError(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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448 'Appending to an existing file is not supported, because that '
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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449 'would involve an expensive `copy`-operation to a temporary '
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450 'file. Open the file in normal `w`-mode and copy explicitly '
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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451 'if that\'s what you\'re after.'
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452 )
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453 if 'x' in mode:
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454 raise ValueError('Use the `overwrite`-parameter instead.')
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455 if 'w' not in mode:
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456 raise ValueError('Atomic writes only make sense with `w`-mode.')
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457
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458 # Atomic writes are more complicated. They work by opening a file
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459 # as a proxy in the same folder and then using the fdopen
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460 # functionality to wrap it in a Python file. Then we wrap it in an
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461 # atomic file that moves the file over on close.
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462 import tempfile
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463 fd, tmp_filename = tempfile.mkstemp(dir=os.path.dirname(filename),
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464 prefix='.__atomic-write')
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465
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466 if encoding is not None:
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467 f = io.open(fd, mode, encoding=encoding, errors=errors)
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468 else:
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469 f = os.fdopen(fd, mode)
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470
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471 return _AtomicFile(f, tmp_filename, filename), True
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472
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473
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474 # Used in a destructor call, needs extra protection from interpreter cleanup.
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475 _rename = os.rename
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476
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477
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478 class _AtomicFile(object):
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479
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480 def __init__(self, f, tmp_filename, real_filename):
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481 self._f = f
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482 self._tmp_filename = tmp_filename
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483 self._real_filename = real_filename
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484 self.closed = False
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485
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486 @property
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487 def name(self):
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488 return self._real_filename
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489
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490 def close(self, delete=False):
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491 if self.closed:
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492 return
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493 self._f.close()
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494 _rename(self._tmp_filename, self._real_filename)
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495 self.closed = True
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496
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497 def __getattr__(self, name):
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498 return getattr(self._f, name)
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499
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500 def __enter__(self):
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501 return self
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502
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503 def __exit__(self, exc_type, exc_value, tb):
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504 self.close(delete=exc_type is not None)
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505
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506 def __repr__(self):
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507 return repr(self._f)
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508
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509
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510 auto_wrap_for_ansi = None
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511 colorama = None
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512 get_winterm_size = None
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513
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514
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515 def strip_ansi(value):
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516 return _ansi_re.sub('', value)
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parents:
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517
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parents:
diff changeset
518
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519 def should_strip_ansi(stream=None, color=None):
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520 if color is None:
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521 if stream is None:
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522 stream = sys.stdin
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523 return not isatty(stream)
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524 return not color
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525
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526
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527 # If we're on Windows, we provide transparent integration through
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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528 # colorama. This will make ANSI colors through the echo function
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529 # work automatically.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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530 if WIN:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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531 # Windows has a smaller terminal
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532 DEFAULT_COLUMNS = 79
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533
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534 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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535 import colorama
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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536 except ImportError:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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537 pass
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bcclaywell
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538 else:
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539 _ansi_stream_wrappers = WeakKeyDictionary()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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540
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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541 def auto_wrap_for_ansi(stream, color=None):
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parents:
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542 """This function wraps a stream so that calls through colorama
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543 are issued to the win32 console API to recolor on demand. It
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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544 also ensures to reset the colors if a write call is interrupted
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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545 to not destroy the console afterwards.
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546 """
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parents:
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547 try:
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parents:
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548 cached = _ansi_stream_wrappers.get(stream)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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549 except Exception:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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550 cached = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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551 if cached is not None:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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552 return cached
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
diff changeset
553 strip = should_strip_ansi(stream, color)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
554 ansi_wrapper = colorama.AnsiToWin32(stream, strip=strip)
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bcclaywell
parents:
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555 rv = ansi_wrapper.stream
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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556 _write = rv.write
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bcclaywell
parents:
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557
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
558 def _safe_write(s):
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bcclaywell
parents:
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559 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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560 return _write(s)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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561 except:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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562 ansi_wrapper.reset_all()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
563 raise
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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564
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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565 rv.write = _safe_write
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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566 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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567 _ansi_stream_wrappers[stream] = rv
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
568 except Exception:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
569 pass
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
570 return rv
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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571
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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572 def get_winterm_size():
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
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parents:
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573 win = colorama.win32.GetConsoleScreenBufferInfo(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
574 colorama.win32.STDOUT).srWindow
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
575 return win.Right - win.Left, win.Bottom - win.Top
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
576
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
577
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
578 def term_len(x):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
579 return len(strip_ansi(x))
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
580
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
581
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
582 def isatty(stream):
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bcclaywell
parents:
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583 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
584 return stream.isatty()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
585 except Exception:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
586 return False
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
587
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
588
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
589 def _make_cached_stream_func(src_func, wrapper_func):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
590 cache = WeakKeyDictionary()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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591 def func():
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bcclaywell
parents:
diff changeset
592 stream = src_func()
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bcclaywell
parents:
diff changeset
593 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
594 rv = cache.get(stream)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
595 except Exception:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
596 rv = None
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
597 if rv is not None:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
598 return rv
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
599 rv = wrapper_func()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
600 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
601 cache[stream] = rv
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
602 except Exception:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
603 pass
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
604 return rv
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
605 return func
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
606
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
607
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
608 _default_text_stdout = _make_cached_stream_func(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
609 lambda: sys.stdout, get_text_stdout)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
610 _default_text_stderr = _make_cached_stream_func(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
611 lambda: sys.stderr, get_text_stderr)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
612
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
613
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
614 binary_streams = {
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
615 'stdin': get_binary_stdin,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
616 'stdout': get_binary_stdout,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
617 'stderr': get_binary_stderr,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
618 }
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
619
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
620 text_streams = {
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
621 'stdin': get_text_stdin,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
622 'stdout': get_text_stdout,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
623 'stderr': get_text_stderr,
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
624 }