Mercurial > hgrepos > Python > libs > ConfigMix
annotate configmix/config.py @ 481:e3990ec55f2a
Use a quick-check for .quote() if no quoting is needed
| author | Franz Glasner <f.glasner@feldmann-mg.com> |
|---|---|
| date | Fri, 17 Dec 2021 13:12:19 +0100 |
| parents | 3cfc808e613b |
| children | 8b8ffb74d452 |
| rev | line source |
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1 # -*- coding: utf-8 -*- |
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2 # :- |
| 302 | 3 # :Copyright: (c) 2015-2021, Franz Glasner. All rights reserved. |
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4 # :License: BSD-3-Clause. See LICENSE.txt for details. |
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5 # :- |
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6 """The unified configuration dictionary with attribute support or |
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7 variable substitution. |
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8 |
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9 """ |
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10 |
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11 from __future__ import division, absolute_import, print_function, generators |
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12 |
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13 |
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14 __all__ = ["Configuration"] |
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15 |
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16 |
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17 import warnings |
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18 try: |
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19 from collections import OrderedDict as ConfigurationBase |
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20 except ImportError: |
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21 try: |
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22 from ordereddict import OrderedDict as ConfigurationBase |
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23 except ImportError: |
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24 ConfigurationBase = dict |
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25 try: |
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26 from urllib.parse import urlsplit |
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27 except ImportError: |
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28 from urlparse import urlsplit |
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29 |
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30 from .variables import lookup_varns, lookup_filter |
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31 from .compat import u, uchr, n, PY2 |
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32 from .constants import REF_NAMESPACE, NONE_FILTER, EMPTY_FILTER |
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33 |
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34 |
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35 _MARKER = object() |
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36 |
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37 |
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38 class _AttributeDict(ConfigurationBase): |
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39 |
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40 def __getattr__(self, name): |
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41 try: |
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42 v = self[name] |
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43 except KeyError: |
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44 raise AttributeError("%s has no attribute %r" % (type(self), name)) |
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45 else: |
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46 # Wrap a dict into another dict with attribute access support |
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47 if isinstance(v, dict): |
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48 return _AttributeDict(v) |
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49 else: |
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50 return v |
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51 |
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52 |
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53 class CoercingMethodsMixin(object): |
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54 |
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55 """Mixin to provide some common implementations for retrieval |
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56 methods that convert return values to a fixed type (int, bool, |
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57 float). |
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58 |
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59 Both :class:`~.Configuration` and :class:`~._JailedConfiguration` use |
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60 this mixin. |
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61 |
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62 """ |
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63 |
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64 def getintvarl_s(self, *path, **kwds): |
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65 """Get a (possibly substituted) variable and coerce text to a |
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66 number. |
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67 |
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68 """ |
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69 s = self.getvarl_s(*path, **kwds) |
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70 if isinstance(s, Configuration._TEXTTYPE): |
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71 return int(s, 0) |
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72 else: |
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73 return s |
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74 |
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75 def getfirstintvarl_s(self, *paths, **kwds): |
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76 """Get a (possibly substituted) variable and coerce text to a |
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77 number. |
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78 |
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79 """ |
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80 s = self.getfirstvarl_s(*paths, **kwds) |
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81 if isinstance(s, Configuration._TEXTTYPE): |
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82 return int(s, 0) |
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83 else: |
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84 return s |
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85 |
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86 def getintvar_s(self, varname, default=_MARKER): |
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87 """Get a (possibly substituted) variable and coerce text to a |
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88 number. |
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89 |
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90 """ |
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91 s = self.getvar_s(varname, default=default) |
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92 if isinstance(s, Configuration._TEXTTYPE): |
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93 return int(s, 0) |
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94 else: |
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95 return s |
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96 |
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97 def getfirstintvar_s(self, *varnames, **kwds): |
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98 """A variant of :meth:`~.getintvar_s` that returns the first found |
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99 variable in the list of given variables in `varnames`. |
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100 |
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101 """ |
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102 s = self.getfirstvar_s(*varnames, **kwds) |
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103 if isinstance(s, Configuration._TEXTTYPE): |
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104 return int(s, 0) |
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105 else: |
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106 return s |
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107 |
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108 def getboolvarl_s(self, *path, **kwds): |
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109 """Get a (possibly substituted) variable and convert text to a |
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110 boolean |
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111 |
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112 """ |
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113 s = self.getvarl_s(*path, **kwds) |
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114 if isinstance(s, Configuration._TEXTTYPE): |
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115 sl = s.strip().lower() |
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116 if sl not in self._BOOL_CVT: |
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117 raise ValueError("Not a boolean: %r" % (s, )) |
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118 return self._BOOL_CVT[sl] |
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119 else: |
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120 return s |
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121 |
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122 def getfirstboolvarl_s(self, *paths, **kwds): |
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123 """Get a (possibly substituted) variable and convert text to a |
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124 boolean |
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125 |
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126 """ |
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127 s = self.getfirstvarl_s(*paths, **kwds) |
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128 if isinstance(s, Configuration._TEXTTYPE): |
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129 sl = s.strip().lower() |
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130 if sl not in self._BOOL_CVT: |
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131 raise ValueError("Not a boolean: %r" % (s, )) |
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132 return self._BOOL_CVT[sl] |
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133 else: |
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134 return s |
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135 |
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136 def getboolvar_s(self, varname, default=_MARKER): |
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137 """Get a (possibly substituted) variable and convert text to a |
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138 boolean |
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139 |
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140 """ |
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141 s = self.getvar_s(varname, default=default) |
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142 if isinstance(s, Configuration._TEXTTYPE): |
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143 sl = s.strip().lower() |
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144 if sl not in self._BOOL_CVT: |
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145 raise ValueError("Not a boolean: %r" % (s, )) |
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146 return self._BOOL_CVT[sl] |
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147 else: |
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148 return s |
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149 |
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150 def getfirstboolvar_s(self, *varnames, **kwds): |
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151 """A variant of :meth:`~.getboolvar_s` that returns the first found |
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152 variable in the list of given variables in `varnames`. |
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153 |
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154 """ |
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155 s = self.getfirstvar_s(*varnames, **kwds) |
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156 if isinstance(s, Configuration._TEXTTYPE): |
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157 sl = s.strip().lower() |
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158 if sl not in self._BOOL_CVT: |
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159 raise ValueError("Not a boolean: %r" % (s, )) |
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160 return self._BOOL_CVT[sl] |
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161 else: |
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162 return s |
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163 |
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164 # Conversion of booleans |
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165 _BOOL_CVT = { |
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166 u('1'): True, u('yes'): True, u('true'): True, u('on'): True, |
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167 u('0'): False, u('no'): False, u('false'): False, u('off'): False |
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168 } |
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169 |
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170 def getfloatvarl_s(self, *path, **kwds): |
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171 """Get a (possibly substituted) variable and convert text to a |
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172 float |
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173 |
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174 """ |
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175 s = self.getvarl_s(*path, **kwds) |
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176 if isinstance(s, Configuration._TEXTTYPE): |
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177 return float(s) |
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178 else: |
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179 return s |
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180 |
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181 def getfirstfloatvarl_s(self, *path, **kwds): |
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182 """Get a (possibly substituted) variable and convert text to a |
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183 float |
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184 |
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185 """ |
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186 s = self.getfirstvarl_s(*path, **kwds) |
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187 if isinstance(s, Configuration._TEXTTYPE): |
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188 return float(s) |
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189 else: |
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190 return s |
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191 |
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192 def getfloatvar_s(self, varname, default=_MARKER): |
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193 """Get a (possibly substituted) variable and convert text to a |
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194 float |
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195 |
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196 """ |
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197 s = self.getvar_s(varname, default) |
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198 if isinstance(s, Configuration._TEXTTYPE): |
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199 return float(s) |
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200 else: |
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201 return s |
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202 |
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203 def getfirstfloatvar_s(self, varname, default=_MARKER): |
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204 """Get a (possibly substituted) variable and convert text to a |
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205 float |
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206 |
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207 """ |
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208 s = self.getfirstvar_s(varname, default) |
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209 if isinstance(s, Configuration._TEXTTYPE): |
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210 return float(s) |
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211 else: |
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212 return s |
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213 |
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214 |
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215 class Configuration(CoercingMethodsMixin, _AttributeDict): |
|
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216 |
| 18 | 217 """The configuration dictionary with attribute support or |
| 218 variable substitution. | |
| 219 | |
| 322 | 220 .. note:: When retrieving by attribute names variables will *not* |
| 18 | 221 substituted. |
| 222 | |
| 223 """ | |
| 224 | |
|
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225 # Speed |
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226 _TEXTTYPE = type(u("")) |
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227 _STARTTOK = u(b"{{") |
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228 _ENDTOK = u(b"}}") |
|
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229 _HIER_SEPARATOR = u(b'.') |
|
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230 _NS_SEPARATOR = u(b':') |
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231 _FILTER_SEPARATOR = u(b'|') |
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232 _STARTTOK_REF = _STARTTOK + REF_NAMESPACE + _NS_SEPARATOR |
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233 _ENDTOK_REF = _ENDTOK |
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234 _DOT = u(b'.') |
|
320
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235 _QUOTE = u(b'%') |
|
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236 _QUOTE_x = u(b'x') |
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237 _QUOTE_u = u(b'u') |
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238 _QUOTE_U = u(b'U') |
|
325
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239 _COMMENT = u(b'#') |
|
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240 _QUOTE_SAFE = u(b'abcdefghijklmnopqrstuvwxyz' |
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241 b'ABCDEFGHIJKLMNOPQRSTUVWXYZ' |
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242 b'0123456789' |
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243 b'-_@!§$&/()=?*+~;,<>´`^') |
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244 """Mostly used configuration key characters that do not need any quoting |
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245 |
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246 """ |
|
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247 |
|
404
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248 is_jail = False |
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249 """Flag to show that this is not a jail for another configuration""" |
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250 |
|
437
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251 def __getitem__(self, key): |
| 469 | 252 """Mapping and list interface that forwards to :meth:`~.getvarl_s` |
|
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253 |
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254 """ |
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255 if isinstance(key, (tuple, list)): |
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256 return self.getvarl_s(*key) |
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257 else: |
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258 return self.getvarl_s(key) |
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259 |
|
442
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260 def get(self, key, default=None): |
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261 """Mapping interface that forwards to :meth:`~.getvarl_s` |
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262 |
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263 """ |
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264 if isinstance(key, (tuple, list)): |
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265 return self.getvarl_s(*key, default=default) |
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266 else: |
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267 return self.getvarl_s(key, default=default) |
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268 |
|
439
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269 def __contains__(self, key): |
| 469 | 270 """Containment test""" |
|
439
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271 if isinstance(key, (tuple, list)): |
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272 # No namespace and quoting support here |
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273 try: |
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274 self._lookupvar(*key) |
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275 except KeyError: |
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276 return False |
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277 else: |
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278 return True |
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279 else: |
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280 return super(Configuration, self).__contains__(key) |
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281 |
|
443
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282 def getitem_ns(self, key): |
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283 """Just forward to the *original* :meth:`dict.__getitem__`. |
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284 |
|
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285 No variable interpolation and key path access. |
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286 |
|
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287 """ |
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288 return super(Configuration, self).__getitem__(key) |
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289 |
|
382
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290 def getvarl(self, *path, **kwds): |
|
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291 """Get a variable where the hierarchy is given in `path` as sequence |
|
380
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292 and the namespace is given in the `namespace` keyword argument. |
|
314
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293 |
|
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294 No variable interpolation is done and no filters are applied. |
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295 |
|
382
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296 Quoting of `path` and `namespace` is *not* needed and wrong. |
| 333 | 297 |
|
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298 """ |
|
321
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299 default = kwds.pop("default", _MARKER) |
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300 namespace = kwds.pop("namespace", None) |
|
314
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301 try: |
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302 if not namespace: |
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303 lookupfn = self._lookupvar |
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304 else: |
|
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305 if namespace == REF_NAMESPACE: |
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306 lookupfn = self._lookupref |
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307 else: |
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308 lookupfn = lookup_varns(namespace) |
|
382
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309 varvalue = lookupfn(*path) |
|
314
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310 except KeyError: |
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311 if default is _MARKER: |
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382
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312 raise KeyError("Variable %r not found" % (path,)) |
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314
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313 else: |
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314 return default |
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315 else: |
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316 return varvalue |
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317 |
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318 def getkeysl(self, *path, **kwds): |
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319 """Yield the keys of a variable value. |
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320 |
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321 :rtype: A generator |
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322 :raise KeyError: |
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323 |
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324 .. note:: Dictionary keys are not subject to interpolation. |
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325 |
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326 """ |
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327 if "default" in kwds: |
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328 raise TypeError("got unexpected keyword argument: default") |
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329 for k in self.getvarl(*path, **kwds).keys(): |
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330 yield k |
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331 |
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332 def getfirstvarl(self, *paths, **kwds): |
|
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333 """A variant of :meth:`~.getvarl` that returns the first found |
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334 variable in the `paths` list. |
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335 |
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336 Every item in `paths` is either a `tuple` or `list` or a `dict`. |
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337 If the path item is a `dict` then it must have two keys "namespace" |
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338 and "path". |
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339 If the path item is a `list` or `tuple` then the namespace is assumed |
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340 to be `None`. |
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341 |
| 389 | 342 Note that a caller that wants to use variables from a non-default |
| 343 namespace must use a sequence of dicts. | |
| 344 | |
|
385
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345 No variable interpolation is done and no filters are applied. |
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346 |
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347 Quoting of anything in `paths` is *not* needed and wrong. |
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348 |
|
395
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349 """ |
|
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350 default = kwds.pop("default", _MARKER) |
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351 for path in paths: |
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352 if isinstance(path, (list, tuple)): |
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353 try: |
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354 varvalue = self.getvarl(*path) |
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355 except KeyError: |
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356 pass |
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357 else: |
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358 return varvalue |
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359 elif isinstance(path, dict): |
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360 try: |
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361 namespace = path["namespace"] |
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362 p = path["path"] |
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363 except KeyError: |
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364 raise TypeError("a paths dict item must have a `path'" |
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365 " and a `namespace' key") |
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366 else: |
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367 try: |
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368 varvalue = self.getvarl(*p, namespace=namespace) |
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369 except KeyError: |
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370 pass |
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371 else: |
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372 return varvalue |
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373 else: |
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374 raise TypeError("a paths item must be a dict, list or tuple") |
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375 if default is _MARKER: |
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376 raise KeyError( |
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377 "none of the given variables found: %r" % (paths,)) |
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378 else: |
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379 return default |
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380 |
|
16
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381 def getvar(self, varname, default=_MARKER): |
|
115
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382 """Get a variable of the form ``[ns:][[key1.]key2.]name`` - including |
|
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383 variables from other namespaces. |
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384 |
|
202
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385 No variable interpolation is done and no filters are applied. |
|
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386 |
| 333 | 387 Special characters (e.g. ``:`` and ``.``) must be quoted when using |
| 388 the default namespace. | |
| 389 | |
| 390 See also :meth:`~.quote`. | |
| 391 | |
|
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392 """ |
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393 varns, varname = self._split_ns(varname) |
|
314
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394 if not varns: |
|
419
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395 if varname: |
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396 varnameparts = [ |
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397 self.unquote(vp) |
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398 for vp in varname.split(self._HIER_SEPARATOR) |
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399 ] |
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400 else: |
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401 varnameparts = tuple() |
|
314
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402 else: |
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403 varnameparts = (varname,) |
|
364
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404 return self.getvarl(*varnameparts, namespace=varns, default=default) |
|
314
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405 |
|
418
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406 def getkeys(self, varname): |
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407 """Yield all the keys of a variable value. |
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408 |
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409 :rtype: A generator |
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410 :raise KeyError: |
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411 |
|
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412 .. note:: Dictionary keys are not subject to interpolation. |
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413 |
|
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414 """ |
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415 for k in self.getvar(varname).keys(): |
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416 yield k |
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|
417 |
|
368
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
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parents:
364
diff
changeset
|
418 def getfirstvar(self, *varnames, **kwds): |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
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parents:
364
diff
changeset
|
419 """A variant of :meth:`~.getvar` that returns the first found variable |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
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parents:
364
diff
changeset
|
420 in the list of given variables in `varnames`. |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
421 |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
422 """ |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
423 default = kwds.pop("default", _MARKER) |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
424 for varname in varnames: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
425 try: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
426 varvalue = self.getvar(varname) |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
427 except KeyError: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
428 pass |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
429 else: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
430 return varvalue |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
431 if default is _MARKER: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
432 raise KeyError( |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
433 "none of the given variables found: %r" % (varnames,)) |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
434 else: |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
435 return default |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
436 |
|
382
24db29162d09
Renamed "names" arguments into the more proper "path"
Franz Glasner <fzglas.hg@dom66.de>
parents:
381
diff
changeset
|
437 def getvarl_s(self, *path, **kwds): |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
438 """Get a variable - including variables from other namespaces. |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
439 |
|
382
24db29162d09
Renamed "names" arguments into the more proper "path"
Franz Glasner <fzglas.hg@dom66.de>
parents:
381
diff
changeset
|
440 `path` and `namespace` are interpreted as in |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
441 :meth:`.getvarl`. But variables will be interpolated |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
442 recursively within the variable values and filters are |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
443 applied. |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
444 |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
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parents:
311
diff
changeset
|
445 For more details see chapter :ref:`variable-interpolation`. |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
446 |
|
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
447 """ |
|
321
7a0f3c256cf4
FIX: Python2 compatibility: keyword arguments after *args not allowed: use **kwds and manual retrieval with .pop() instead
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
320
diff
changeset
|
448 default = kwds.pop("default", _MARKER) |
|
7a0f3c256cf4
FIX: Python2 compatibility: keyword arguments after *args not allowed: use **kwds and manual retrieval with .pop() instead
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
320
diff
changeset
|
449 namespace = kwds.pop("namespace", None) |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
450 try: |
|
382
24db29162d09
Renamed "names" arguments into the more proper "path"
Franz Glasner <fzglas.hg@dom66.de>
parents:
381
diff
changeset
|
451 obj = self.getvarl(*path, namespace=namespace) |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
452 return self.substitute_variables_in_obj(obj) |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
453 except KeyError: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
454 if default is _MARKER: |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
455 raise |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
456 else: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
457 return default |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
458 |
|
381
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
459 def getfirstvarl_s(self, *paths, **kwds): |
|
388
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
460 """A variant of :meth:`~.getfirstvarl` that does variable |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
461 interpolation. |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
462 |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
463 `paths` and `kwds` are interpreted as in :meth:`.getfirstvarl`. |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
464 But variables will be interpolated |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
465 recursively within the variable values and filters are |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
466 applied. |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
467 |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
468 For more details see chapter :ref:`variable-interpolation`. |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
469 |
|
13427f37abab
Docs: document Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
385
diff
changeset
|
470 """ |
|
381
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
471 default = kwds.pop("default", _MARKER) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
472 for path in paths: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
473 if isinstance(path, (list, tuple)): |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
474 try: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
475 obj = self.getvarl(*path) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
476 except KeyError: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
477 pass |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
478 else: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
479 return self.substitute_variables_in_obj(obj) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
480 |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
481 elif isinstance(path, dict): |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
482 try: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
483 namespace = path["namespace"] |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
484 p = path["path"] |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
485 except KeyError: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
486 raise TypeError("a paths dict item must have a `path'" |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
487 " and a `namespace' key") |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
488 else: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
489 try: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
490 obj = self.getvarl(*p, namespace=namespace) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
491 except KeyError: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
492 pass |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
493 else: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
494 return self.substitute_variables_in_obj(obj) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
495 else: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
496 raise TypeError("a paths item must be a dict, list or tuple") |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
497 if default is _MARKER: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
498 raise KeyError( |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
499 "none of the given variables found: %r" % (paths,)) |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
500 else: |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
501 return default |
|
fe3dfd687621
Implemented Configuration.getfirstvarl() and Configuration.getfirstvarl_s()
Franz Glasner <fzglas.hg@dom66.de>
parents:
380
diff
changeset
|
502 |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
503 def getvar_s(self, varname, default=_MARKER): |
|
24
fa65adab0b71
FIX: Typo in comment
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
23
diff
changeset
|
504 """Get a variable - including variables from other namespaces. |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
505 |
|
115
a5339d39af5c
Begin the documentation of variables and its expansion
Franz Glasner <hg@dom66.de>
parents:
104
diff
changeset
|
506 `varname` is interpreted as in :meth:`.getvar`. But variables |
|
202
2e66178a09d8
Docu: Ban "keyword expansion" -- use "variable interpolation" instead
Franz Glasner <fzglas.hg@dom66.de>
parents:
156
diff
changeset
|
507 will be interpolated recursively within the variable values |
|
2e66178a09d8
Docu: Ban "keyword expansion" -- use "variable interpolation" instead
Franz Glasner <fzglas.hg@dom66.de>
parents:
156
diff
changeset
|
508 and filters are applied. |
|
115
a5339d39af5c
Begin the documentation of variables and its expansion
Franz Glasner <hg@dom66.de>
parents:
104
diff
changeset
|
509 |
|
202
2e66178a09d8
Docu: Ban "keyword expansion" -- use "variable interpolation" instead
Franz Glasner <fzglas.hg@dom66.de>
parents:
156
diff
changeset
|
510 For more details see chapter :ref:`variable-interpolation`. |
|
115
a5339d39af5c
Begin the documentation of variables and its expansion
Franz Glasner <hg@dom66.de>
parents:
104
diff
changeset
|
511 |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
512 """ |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
513 try: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
514 obj = self.getvar(varname) |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
515 return self.substitute_variables_in_obj(obj) |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
516 except KeyError: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
517 if default is _MARKER: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
518 raise |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
519 else: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
520 return default |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
521 |
|
368
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
522 def getfirstvar_s(self, *varnames, **kwds): |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
523 """A variant of :meth:`~.getvar_s` that returns the first found |
|
4ee53f6fcac1
Implement ".getfirstvar()" and ".getfirstvar_s()".
Franz Glasner <fzglas.hg@dom66.de>
parents:
364
diff
changeset
|
524 variable in the list of given variables in `varnames`. |
|
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525 |
|
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|
526 """ |
|
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|
527 default = kwds.pop("default", _MARKER) |
|
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|
528 for varname in varnames: |
|
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|
529 try: |
|
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|
530 obj = self.getvar(varname) |
|
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531 except KeyError: |
|
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|
532 pass |
|
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|
533 else: |
|
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|
534 return self.substitute_variables_in_obj(obj) |
|
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|
535 if default is _MARKER: |
|
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|
536 raise KeyError( |
|
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|
537 "none of the given variables found: %r" % (varnames,)) |
|
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Implement ".getfirstvar()" and ".getfirstvar_s()".
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|
538 else: |
|
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|
539 return default |
|
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|
540 |
|
16
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changeset
|
541 def _split_ns(self, s): |
|
480
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542 ns, sep, rest = s.partition(self._NS_SEPARATOR) |
|
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543 if sep: |
|
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|
544 return (self.unquote(ns), rest) |
|
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545 else: |
|
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|
546 return (None, ns) |
|
16
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|
547 |
|
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|
548 def _split_filters(self, s): |
|
480
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|
549 name, sep, filters = s.partition(self._FILTER_SEPARATOR) |
|
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|
550 if sep: |
|
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551 filters = filters.strip() |
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552 if filters: |
|
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|
553 return (name.rstrip(), |
|
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|
554 filters.split(self._FILTER_SEPARATOR)) |
|
476
eddc0f7c6271
Optimize ._split_filters() for the most common case of no-filters: use s.partition() first
Franz Glasner <f.glasner@feldmann-mg.com>
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475
diff
changeset
|
555 else: |
|
480
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|
556 return (name.rstrip(), []) |
|
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|
557 else: |
|
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diff
changeset
|
558 return (name, []) |
|
16
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|
559 |
|
382
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Franz Glasner <fzglas.hg@dom66.de>
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diff
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|
560 def _lookupvar(self, *path, **kwds): |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
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diff
changeset
|
561 """Lookup a variable within a hierarchy. |
|
16
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changeset
|
562 |
|
382
24db29162d09
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parents:
381
diff
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|
563 If no default is given an unexisting `path` raises a `KeyError` |
|
16
f85dc4677c01
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|
564 else `default` is returned. |
|
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Implemented the real configuration dictionary with attribute access or
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changeset
|
565 """ |
|
321
7a0f3c256cf4
FIX: Python2 compatibility: keyword arguments after *args not allowed: use **kwds and manual retrieval with .pop() instead
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
320
diff
changeset
|
566 default = kwds.pop("default", _MARKER) |
|
419
079a82129110
Allow the empty variable name to retrieve the root configuration object
Franz Glasner <fzglas.hg@dom66.de>
parents:
418
diff
changeset
|
567 if not path: |
|
079a82129110
Allow the empty variable name to retrieve the root configuration object
Franz Glasner <fzglas.hg@dom66.de>
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418
diff
changeset
|
568 return self |
|
16
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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changeset
|
569 try: |
| 438 | 570 v = self.expand_if_reference( |
| 571 super(Configuration, self).__getitem__(path[0])) | |
|
382
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Renamed "names" arguments into the more proper "path"
Franz Glasner <fzglas.hg@dom66.de>
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|
572 for p in path[1:]: |
|
305
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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304
diff
changeset
|
573 v = self.expand_if_reference(v[p]) |
|
104
d9f9a06e0c49
Make a better error message for "TypeError" exceptions when looking up variables.
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
82
diff
changeset
|
574 except TypeError: |
|
207
b3b5ed34d180
Handle most flake8 errors and warnings.
Franz Glasner <fzglas.hg@dom66.de>
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diff
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|
575 raise KeyError( |
|
b3b5ed34d180
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diff
changeset
|
576 "Configuration variable %r not found" |
|
382
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parents:
381
diff
changeset
|
577 "(missing intermediate keys?)" % (path,)) |
|
16
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parents:
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changeset
|
578 except KeyError: |
|
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parents:
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changeset
|
579 if default is _MARKER: |
|
314
043a6412be3c
Implemented new access methods .getvarl() and .getvarl_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
311
diff
changeset
|
580 raise KeyError( |
|
382
24db29162d09
Renamed "names" arguments into the more proper "path"
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parents:
381
diff
changeset
|
581 "Configuration variable %r not found" % (path,)) |
|
16
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parents:
diff
changeset
|
582 else: |
|
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Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
583 return default |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
584 return v |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
Franz Glasner <hg@dom66.de>
parents:
diff
changeset
|
585 |
|
305
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
Franz Glasner <fzglas.hg@dom66.de>
parents:
304
diff
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|
586 def _lookupref(self, key, default=_MARKER): |
|
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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parents:
304
diff
changeset
|
587 """ |
| 311 | 588 |
| 589 `key` must be a configuration reference URI without any | |
| 590 (namespace) prefixes and suffixes | |
|
305
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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diff
changeset
|
591 |
|
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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parents:
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diff
changeset
|
592 """ |
|
f529ca46dd50
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parents:
304
diff
changeset
|
593 return self.expand_ref_uri(key, default=default) |
|
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parents:
304
diff
changeset
|
594 |
|
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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diff
changeset
|
595 def expand_if_reference(self, v, default=_MARKER): |
| 311 | 596 """Check whether `v` is a configuration reference and -- if true -- |
| 597 then expand it. | |
|
305
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Implemented the "ref" namespace to get configuration tree references.
Franz Glasner <fzglas.hg@dom66.de>
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|
598 |
| 310 | 599 `v` must match the pattern ``{{ref:<REFERENCE>}}`` |
|
305
f529ca46dd50
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parents:
304
diff
changeset
|
600 |
|
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parents:
304
diff
changeset
|
601 All non-matching texttypes and all non-texttypes are returned |
|
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Implemented the "ref" namespace to get configuration tree references.
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diff
changeset
|
602 unchanged. |
|
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Implemented the "ref" namespace to get configuration tree references.
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diff
changeset
|
603 |
|
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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diff
changeset
|
604 """ |
|
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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parents:
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diff
changeset
|
605 if not isinstance(v, self._TEXTTYPE): |
|
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parents:
304
diff
changeset
|
606 return v |
|
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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diff
changeset
|
607 if not v.startswith(self._STARTTOK_REF) \ |
|
f529ca46dd50
Implemented the "ref" namespace to get configuration tree references.
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parents:
304
diff
changeset
|
608 or not v.endswith(self._ENDTOK_REF): |
|
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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diff
changeset
|
609 return v |
|
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parents:
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diff
changeset
|
610 return self.expand_ref_uri( |
|
f529ca46dd50
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parents:
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diff
changeset
|
611 v[len(self._STARTTOK_REF):-len(self._ENDTOK_REF)], |
|
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parents:
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diff
changeset
|
612 default=default) |
|
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diff
changeset
|
613 |
|
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diff
changeset
|
614 def expand_ref_uri(self, uri, default=_MARKER): |
|
f529ca46dd50
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parents:
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diff
changeset
|
615 pu = urlsplit(uri) |
|
f529ca46dd50
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parents:
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diff
changeset
|
616 if pu.scheme or pu.netloc or pu.path or pu.query: |
|
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parents:
304
diff
changeset
|
617 raise ValueError("only fragment-only URIs are supported") |
|
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parents:
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diff
changeset
|
618 if not pu.fragment: |
|
f529ca46dd50
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diff
changeset
|
619 return self |
|
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changeset
|
620 if pu.fragment.startswith(self._DOT): |
|
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changeset
|
621 raise ValueError("relative refs not supported") |
|
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changeset
|
622 return self.getvar(pu.fragment, default=default) |
|
16
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parents:
diff
changeset
|
623 |
|
f85dc4677c01
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parents:
diff
changeset
|
624 def substitute_variables_in_obj(self, obj): |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
625 """Recursively expand variables in the object tree `obj`.""" |
|
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Implemented the real configuration dictionary with attribute access or
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parents:
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changeset
|
626 if isinstance(obj, self._TEXTTYPE): |
|
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parents:
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changeset
|
627 # a string - really replace the value |
|
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parents:
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changeset
|
628 return self.expand_variable(obj) |
|
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parents:
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changeset
|
629 elif isinstance(obj, list): |
|
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parents:
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changeset
|
630 return [self.substitute_variables_in_obj(i) for i in obj] |
|
f85dc4677c01
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parents:
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changeset
|
631 elif isinstance(obj, tuple): |
|
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parents:
diff
changeset
|
632 tmp = [self.substitute_variables_in_obj(i) for i in obj] |
|
f85dc4677c01
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parents:
diff
changeset
|
633 return type(obj)(tmp) |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
634 elif isinstance(obj, dict): |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
635 newdict = type(obj)() |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
636 for k in obj: |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
637 newdict[k] = self.substitute_variables_in_obj(obj[k]) |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
638 return newdict |
|
f85dc4677c01
Implemented the real configuration dictionary with attribute access or
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parents:
diff
changeset
|
639 elif isinstance(obj, set): |
|
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640 newset = type(obj)() |
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641 for i in obj: |
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642 newset.add(self.substitute_variables_in_obj(i)) |
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643 else: |
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644 return obj |
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645 |
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646 def expand_variable(self, s): |
| 302 | 647 """Expand variables in the single string `s`""" |
|
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648 start = s.find(self._STARTTOK, 0) |
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649 while start != -1: |
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650 end = s.find(self._ENDTOK, start) |
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651 if end < 0: |
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652 return s |
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653 varname, filters = self._split_filters(s[start+2:end]) |
|
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654 try: |
|
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655 if NONE_FILTER in filters: |
|
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656 varvalue = self._apply_filters( |
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657 filters, self.getvar_s(varname, default=None)) |
|
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658 elif EMPTY_FILTER in filters: |
|
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659 varvalue = self._apply_filters( |
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660 filters, self.getvar_s(varname, default=u(""))) |
|
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661 else: |
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662 varvalue = self._apply_filters( |
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663 filters, self.getvar_s(varname)) |
|
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664 except KeyError: |
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665 warnings.warn("Cannot expand variable %r in string " |
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666 "%r" % (varname, s, ), |
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667 UserWarning, |
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668 stacklevel=1) |
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669 raise |
|
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670 # |
|
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671 # Dont apply and type conversions to the variable value if |
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672 # the whole `s` is just one expansion |
|
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673 # |
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674 if (start == 0) and (end + 2 == len(s)): |
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675 return varvalue |
|
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676 if varvalue is None: |
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677 varvalue = u("") |
|
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678 replaced = s[:start] + u(str(varvalue)) |
|
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679 s = replaced + s[end+2:] |
|
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680 # don't re-evaluate because `self.getvar_s()` expands already |
|
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681 start = s.find(self._STARTTOK, len(replaced)) |
|
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682 return s |
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683 |
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684 def _apply_filters(self, filters, value): |
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685 for name in filters: |
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686 try: |
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687 filterfn = lookup_filter(name) |
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688 except KeyError: |
|
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|
689 # |
|
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690 # Convert to NameError because we find a missing filters |
|
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691 # a very serious error. |
|
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|
692 # |
|
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693 raise NameError("Filter %r not found" % name) |
|
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|
694 else: |
|
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|
695 value = filterfn(self, value) |
|
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|
696 return value |
|
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|
697 |
|
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698 @classmethod |
|
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|
699 def quote(klass, s): |
| 333 | 700 """Replace important special characters in string `s` by replacing |
| 701 them with ``%xNN`` where `NN` are the two hexadecimal digits of the | |
| 702 characters unicode codepoint value. | |
| 703 | |
| 704 Handled are the important special chars: ``%``, ``.``, ``:``, | |
|
334
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|
705 ``#``; ``'``, ``"``, ``|``, ``{``, ``}``, ``[`` and ``]``. |
| 333 | 706 |
| 707 See also the :ref:`quoting` section. | |
|
320
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|
708 |
|
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709 """ |
|
481
e3990ec55f2a
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480
diff
changeset
|
710 # Quick check whether all of the chars is in _QUOTE_SAFE |
|
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parents:
480
diff
changeset
|
711 if not s.rstrip(klass._QUOTE_SAFE): |
|
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parents:
480
diff
changeset
|
712 return s |
|
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480
diff
changeset
|
713 # Slow path |
|
320
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|
714 qc = klass._QUOTE |
|
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|
715 s = s.replace(qc, qc + "x25") |
|
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|
716 s = s.replace(klass._DOT, qc + "x2e") |
|
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|
717 s = s.replace(klass._NS_SEPARATOR, qc + "x3a") |
|
325
ab33d51f3412
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322
diff
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|
718 s = s.replace(klass._COMMENT, qc + "x23") |
|
326
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diff
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|
719 s = s.replace(klass._FILTER_SEPARATOR, qc + "x7c") |
|
b7abfbfe806d
By default quote '"' and "'" also
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diff
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|
720 s = s.replace('"', qc + "x22") |
|
334
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diff
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|
721 s = s.replace("'", qc + "x27") |
|
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|
722 s = s.replace('{', qc + "x7b") |
|
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|
723 s = s.replace('}', qc + "x7d") |
|
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|
724 s = s.replace('[', qc + "x5b") |
|
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|
725 return s.replace(']', qc + "x5d") |
|
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|
726 |
|
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|
727 @classmethod |
|
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|
728 def unquote(klass, s): |
| 333 | 729 """Unquote the content of `s`: handle all patterns ``%xNN``, |
| 730 ``%uNNNN`` or ``%UNNNNNNNN``. | |
| 731 | |
| 732 This is the inverse of :meth:`~.quote`. | |
|
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|
733 |
|
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|
734 """ |
|
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|
735 if klass._QUOTE not in s: |
|
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|
736 return s |
|
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|
737 parts = s.split(klass._QUOTE) |
|
477
1de6cc49776e
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parents:
476
diff
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|
738 res = [parts[0]] |
|
1de6cc49776e
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parents:
476
diff
changeset
|
739 res_append = res.append |
|
320
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|
740 for p in parts[1:]: |
|
479
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parents:
478
diff
changeset
|
741 try: |
|
490f0c4665bb
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parents:
478
diff
changeset
|
742 qc = p[0] |
|
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parents:
478
diff
changeset
|
743 except IndexError: |
|
490f0c4665bb
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parents:
478
diff
changeset
|
744 raise ValueError("unknown quote syntax string: {}".format(s)) |
|
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diff
changeset
|
745 if qc == klass._QUOTE_x: |
|
320
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|
746 if len(p) < 3: |
|
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|
747 raise ValueError("quote syntax: length too small") |
|
477
1de6cc49776e
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parents:
476
diff
changeset
|
748 res_append(uchr(int(p[1:3], 16))) |
|
1de6cc49776e
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Franz Glasner <f.glasner@feldmann-mg.com>
parents:
476
diff
changeset
|
749 res_append(p[3:]) |
|
479
490f0c4665bb
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478
diff
changeset
|
750 elif qc == klass._QUOTE_u: |
|
320
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|
751 if len(p) < 5: |
|
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|
752 raise ValueError("quote syntax: length too small") |
|
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753 res_append(uchr(int(p[1:5], 16))) |
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754 res_append(p[5:]) |
|
479
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755 elif qc == klass._QUOTE_U: |
|
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756 if len(p) < 9: |
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757 raise ValueError("quote syntax: length too small") |
|
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758 res_append(uchr(int(p[1:9], 16))) |
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759 res_append(p[9:]) |
|
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760 else: |
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761 raise ValueError("unknown quote syntax string: {}".format(s)) |
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762 return ''.join(res) |
|
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763 |
|
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764 def jailed(self, rootpath=None, root=None, bind_root=True): |
| 399 | 765 """Return a "jailed" configuration of the current configuration. |
|
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766 |
| 399 | 767 :param rootpath: a sequence of strings that shall emcompass |
| 768 the chroot-like jail of the returned | |
| 769 configuration | |
| 770 :type rootpath: list or tuple | |
| 771 :param str root: a string path expression that shall encompass | |
| 772 the chroot-like jail of the returned configuration | |
|
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773 :param bool bind_root: if you do a :meth:`~.rebind` just after |
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774 creation of a jailed config you can set |
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775 `bind_root` to `False`; otherwise use |
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776 the default |
| 397 | 777 :return: a jailed (aka restricted) configuration |
| 778 :rtype: _JailedConfiguration | |
| 779 | |
| 399 | 780 Exactly one of `rootpath` or `root` must be given. |
| 781 | |
|
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782 """ |
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783 if rootpath is not None and root is not None: |
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784 raise ValueError("only one of `rootpath' or `root' can be given") |
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785 if rootpath is None and root is None: |
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786 raise ValueError("one of `rootpath' or `root' must be given") |
|
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787 if rootpath is not None and not isinstance(rootpath, (list, tuple)): |
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788 raise TypeError("`rootpath' must be a list or a tuple") |
|
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789 if root is not None: |
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790 # convert to path |
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791 varns, varname = self._split_ns(root) |
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792 if varns: |
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793 raise ValueError( |
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794 "jailed configurations do not support namespaces") |
|
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795 if varname: |
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796 rootpath = [ |
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797 self.unquote(p) for p in root.split( |
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798 self._HIER_SEPARATOR) |
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799 ] |
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800 else: |
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801 rootpath = tuple() |
|
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802 jc = _JailedConfiguration(*rootpath) |
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803 if bind_root: |
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804 jc.rebind(self) |
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805 return jc |
|
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806 |
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807 |
|
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808 class _JailedConfiguration(CoercingMethodsMixin): |
|
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809 |
| 397 | 810 """A jailed and restricted variant of :class:`Configuration`. |
| 811 | |
| 399 | 812 Restriction is two-fold: |
| 813 | |
| 814 - The access to configuration variables in `config` is restricted | |
| 815 to the configuration sub-tree that is configured in `path`. | |
| 816 | |
| 817 - Not all access-methods of :class:`Configuration` are implemented | |
| 818 yet. | |
| 819 | |
| 400 | 820 .. seealso:: :ref:`jailed-configuration` |
| 821 | |
| 399 | 822 .. note:: There is no namespace support. |
| 823 | |
| 824 .. note:: Do not call the constructor directly. Instantiate a jailed | |
| 825 configuration from the parent configuration's | |
| 826 :meth:`~.Configuration.jailed` factory method. | |
| 397 | 827 |
| 828 """ | |
|
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829 |
| 396 | 830 __slots__ = ("_base", "_path", "_pathstr") |
|
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831 |
|
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832 is_jail = True |
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833 """Flag to show that this is a jail for another configuration""" |
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834 |
|
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835 def __init__(self, *path): |
|
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836 super(_JailedConfiguration, self).__init__() |
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837 self._path = path |
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838 if path: |
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839 self._pathstr = \ |
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840 Configuration._HIER_SEPARATOR.join( |
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841 [Configuration.quote(p) for p in path]) \ |
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842 + Configuration._HIER_SEPARATOR |
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843 else: |
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844 self._pathstr = '' |
|
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845 |
|
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846 @property |
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847 def base(self): |
|
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848 """Ask for the base (aka parent) configuration". |
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849 |
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850 This configuration is always unjailed. |
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851 |
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852 """ |
|
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853 return self._base |
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854 |
|
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855 def rebind(self, new_base): |
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856 """Bind the jail to a new unjailed configuration `new_base`. |
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857 |
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858 The new configuration base also must have an existing path to |
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859 the root. |
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860 |
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861 :param Configuration new_base: the new base |
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862 |
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863 """ |
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864 if new_base.is_jail: |
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865 raise TypeError("can only bind to an unjailed configuration") |
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866 self._base = new_base |
|
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867 # |
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868 # Early error out if the chroot does not exist but allow |
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869 # degenerated case if `self._path` is empty. |
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870 # |
|
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871 if self._path and self._path not in new_base: |
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872 raise KeyError( |
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873 "base key path %r not available in the new base" |
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874 % (self._path, )) |
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875 |
|
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876 def __getattr__(self, name): |
| 469 | 877 """Attribute-style access. |
| 878 | |
| 879 Result values are interpolated (i.e. forwarded to | |
| 880 :meth:`~.getvarl_s`) | |
| 881 | |
| 882 """ | |
|
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883 try: |
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884 v = self._base.getvarl_s(*(self._path + (name, ))) |
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885 except KeyError: |
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changeset
|
886 raise AttributeError("%s has no attribute %r" % (type(self), name)) |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
887 else: |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
888 # Wrap a dict into another dict with attribute access support |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
889 if isinstance(v, dict): |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
890 return _AttributeDict(v) |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
891 else: |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
892 return v |
|
b95c12781497
Attribute-style access for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
443
diff
changeset
|
893 |
|
437
bbc5b64e137a
- Dict-level access to a configuration key now does variable interpolation.
Franz Glasner <fzglas.hg@dom66.de>
parents:
432
diff
changeset
|
894 def __getitem__(self, key): |
| 469 | 895 """Mapping and list interface that forwards to :meth:`~.getvarl_s` |
|
437
bbc5b64e137a
- Dict-level access to a configuration key now does variable interpolation.
Franz Glasner <fzglas.hg@dom66.de>
parents:
432
diff
changeset
|
896 |
|
bbc5b64e137a
- Dict-level access to a configuration key now does variable interpolation.
Franz Glasner <fzglas.hg@dom66.de>
parents:
432
diff
changeset
|
897 """ |
|
441
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
898 if isinstance(key, tuple): |
|
440
f297c23f78f0
Optimize __getitem__() in jailed configurations: call base directly
Franz Glasner <fzglas.hg@dom66.de>
parents:
439
diff
changeset
|
899 return self._base.getvarl_s(*(self._path + key)) |
|
441
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
900 elif isinstance(key, list): |
|
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
901 return self._base.getvarl_s(*(self._path + tuple(key))) |
|
437
bbc5b64e137a
- Dict-level access to a configuration key now does variable interpolation.
Franz Glasner <fzglas.hg@dom66.de>
parents:
432
diff
changeset
|
902 else: |
|
468
95df1a10259a
Index list-access for jailed configurations: be more generic by calling also __getitem__ in the base
Franz Glasner <fzglas.hg@dom66.de>
parents:
467
diff
changeset
|
903 return self._base.getvarl_s(*self._path)[key] |
|
437
bbc5b64e137a
- Dict-level access to a configuration key now does variable interpolation.
Franz Glasner <fzglas.hg@dom66.de>
parents:
432
diff
changeset
|
904 |
|
442
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
905 def get(self, key, default=None): |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
906 if isinstance(key, tuple): |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
907 return self._base.get(self._path + key, default=default) |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
908 elif isinstance(key, list): |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
909 return self._base.get(self._path + tuple(key), default=default) |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
910 else: |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
911 return self._base.get(self._path + (key, ), default=default) |
|
94cf5a8722d6
Add proper .get() support for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
441
diff
changeset
|
912 |
|
439
bd27da55483a
Optimized __contains__() implementation for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
438
diff
changeset
|
913 def __contains__(self, key): |
| 469 | 914 """Containment support for containers""" |
|
441
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
915 if isinstance(key, tuple): |
|
439
bd27da55483a
Optimized __contains__() implementation for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
438
diff
changeset
|
916 return (self._path + key) in self._base |
|
441
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
917 elif isinstance(key, list): |
|
9d20fab53a19
FIX: Handle "list"-type keys in __contains__ and __getitem__ properly: convert to tuples for contatenation with tuple
Franz Glasner <fzglas.hg@dom66.de>
parents:
440
diff
changeset
|
918 return (self._path + tuple(key)) in self._base |
|
439
bd27da55483a
Optimized __contains__() implementation for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
438
diff
changeset
|
919 else: |
|
bd27da55483a
Optimized __contains__() implementation for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
438
diff
changeset
|
920 return (self._path + (key, )) in self._base |
|
bd27da55483a
Optimized __contains__() implementation for jailed and unjailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
438
diff
changeset
|
921 |
|
395
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
922 def getvarl(self, *path, **kwds): |
|
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
923 return self._base.getvarl(*(self._path + path), **kwds) |
|
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
924 |
|
418
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
925 def getkeysl(self, *path, **kwds): |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
926 for k in self._base.getkeysl(*(self._path + path), **kwds): |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
927 yield k |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
928 |
|
398
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
929 def getfirstvarl(self, *paths, **kwds): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
930 real_paths = [] |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
931 for path in paths: |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
932 if isinstance(path, (list, tuple)): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
933 real_paths.append(self._path + path) |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
934 elif isinstance(path, dict): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
935 raise TypeError( |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
936 "a `dict' is not supported in a jailed configuration") |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
937 else: |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
938 raise TypeError("a paths item must be a list or tuple") |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
939 return self._base.getfirstvarl(*real_paths, **kwds) |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
940 |
|
395
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
941 def getvarl_s(self, *path, **kwds): |
|
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
942 return self._base.getvarl_s(*(self._path + path), **kwds) |
|
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
943 |
|
398
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
944 def getfirstvarl_s(self, *paths, **kwds): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
945 real_paths = [] |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
946 for path in paths: |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
947 if isinstance(path, (list, tuple)): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
948 real_paths.append(self._path + path) |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
949 elif isinstance(path, dict): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
950 raise TypeError( |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
951 "a `dict' is not supported in a jailed configuration") |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
952 else: |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
953 raise TypeError("a paths item must be a list or tuple") |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
954 return self._base.getfirstvarl_s(*real_paths, **kwds) |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
955 |
|
428
090a25f36a3d
FIX: Allow jailed configurations to use correctly use base configurations that use a different "default" marker object.
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
426
diff
changeset
|
956 def getvar(self, varname, **kwds): |
|
090a25f36a3d
FIX: Allow jailed configurations to use correctly use base configurations that use a different "default" marker object.
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
426
diff
changeset
|
957 return self._base.getvar(self._pathstr + varname, **kwds) |
|
395
0b3ffc34fa5c
Begin a jailed configuration with access to a sub-tree of the original configuration
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
389
diff
changeset
|
958 |
|
418
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
959 def getkeys(self, varname): |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
960 for k in self._base.getkeys(self._pathstr + varname): |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
961 yield k |
|
bb5f11abd12a
Implement .getkeysl() and .getkeys() for configuration objects that iterate over all the keys of a configuration value
Franz Glasner <fzglas.hg@dom66.de>
parents:
417
diff
changeset
|
962 |
|
398
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
963 def getfirstvar(self, *varnames, **kwds): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
964 real_varnames = [self._pathstr + vn for vn in varnames] |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
965 return self._base.getfirstvar(*real_varnames, **kwds) |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
966 |
|
428
090a25f36a3d
FIX: Allow jailed configurations to use correctly use base configurations that use a different "default" marker object.
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
426
diff
changeset
|
967 def getvar_s(self, varname, **kwds): |
|
090a25f36a3d
FIX: Allow jailed configurations to use correctly use base configurations that use a different "default" marker object.
Franz Glasner <f.glasner@feldmann-mg.com>
parents:
426
diff
changeset
|
968 return self._base.getvar_s(self._pathstr + varname, **kwds) |
|
398
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
969 |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
970 def getfirstvar_s(self, *varnames, **kwds): |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
971 real_varnames = [self._pathstr + vn for vn in varnames] |
|
b1f82b853290
Jailed configuration: implement more methods: getfirstvarl, getfirstvarl_s, getfirstvar and getfirstvar_s
Franz Glasner <fzglas.hg@dom66.de>
parents:
397
diff
changeset
|
972 return self._base.getfirstvar_s(*real_varnames, **kwds) |
|
417
83d537f1dfbb
Implement sub-jails: allow to get a jailed configuration from a jail
Franz Glasner <fzglas.hg@dom66.de>
parents:
416
diff
changeset
|
973 |
|
459
9dc9cef1b9cd
Implement proper iteration support for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
455
diff
changeset
|
974 def __iter__(self): |
| 469 | 975 """Iteration support for containers""" |
|
459
9dc9cef1b9cd
Implement proper iteration support for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
455
diff
changeset
|
976 return iter(self._base.getvarl_s(*self._path)) |
|
9dc9cef1b9cd
Implement proper iteration support for jailed configurations
Franz Glasner <fzglas.hg@dom66.de>
parents:
455
diff
changeset
|
977 |
|
467
9fcdc42a0457
len-support for jailed configurations: implement a proper __len__() method
Franz Glasner <fzglas.hg@dom66.de>
parents:
460
diff
changeset
|
978 def __len__(self): |
| 469 | 979 """Length support for containers""" |
|
467
9fcdc42a0457
len-support for jailed configurations: implement a proper __len__() method
Franz Glasner <fzglas.hg@dom66.de>
parents:
460
diff
changeset
|
980 return len(self._base.getvarl(*self._path)) |
|
9fcdc42a0457
len-support for jailed configurations: implement a proper __len__() method
Franz Glasner <fzglas.hg@dom66.de>
parents:
460
diff
changeset
|
981 |
|
460
d22985d6806e
Proper boolean context for jailed configurations: __bool__()/__nonzero__()
Franz Glasner <fzglas.hg@dom66.de>
parents:
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982 if PY2: |
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983 |
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984 def __nonzero__(self): |
| 469 | 985 """Map- and list-style evaluation in boolean context""" |
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460
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986 return bool(self._base.getvarl_s(*self._path)) |
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987 |
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988 else: |
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989 |
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990 def __bool__(self): |
| 469 | 991 """Map- and list-style evaluation in boolean context""" |
|
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992 return bool(self._base.getvarl_s(*self._path)) |
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993 |
|
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994 def jailed(self, rootpath=None, root=None, bind_root=True): |
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995 """Return a "jailed" configuration that effectively is a |
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996 subjail of the current jail |
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997 |
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998 For a more complete description see :meth:`.Configuration.jailed`. |
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999 |
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1000 """ |
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1001 if rootpath is not None and root is not None: |
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1002 raise ValueError("only one of `rootpath' or `root' can be given") |
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1003 if rootpath is None and root is None: |
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1004 raise ValueError("one of `rootpath' or `root' must be given") |
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1005 if rootpath is not None and not isinstance(rootpath, (list, tuple)): |
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1006 raise TypeError("`rootpath' must be a list or a tuple") |
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1007 if root is not None: |
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1008 # convert to path |
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1009 varns, varname = self._base._split_ns(root) |
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1010 if varns: |
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1011 raise ValueError( |
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1012 "sub-jails do not support namespaces") |
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1013 if varname: |
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1014 rootpath = [ |
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1015 self._base.unquote(p) for p in varname.split( |
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1016 self._base._HIER_SEPARATOR) |
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1017 ] |
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1018 else: |
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1019 rootpath = tuple() |
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1020 if self._path: |
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1021 new_rootpath = self._path + tuple(rootpath) |
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1022 else: |
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1023 new_rootpath = rootpath |
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1024 sjc = _JailedConfiguration(*new_rootpath) |
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1025 if bind_root: |
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1026 sjc.rebind(self._base) |
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1027 return sjc |
|
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1028 |
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1029 def __repr__(self): |
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1030 r = "_JailedConfiguration(rootpath=%s)" % n(repr(self._path)) |
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1031 return r |
