Mercurial > hg
annotate mercurial/config.py @ 43104:74802979dd9d
py3: define and use pycompat.itervalues()
.itervalues() only exists on Python 2. Python 3's equivalent is
.values(). But we don't want to blindly use .values() everywhere
because on Python 2, it will create a list, which will have performance
implications.
This commit introduces pycompat.itervalues() which will call the appropriate
method on the passed object. We update all callers of obj.itervalues()
to pycompat.itervalues(obj) instead.
With this commit, the only source tranforming remaining is for
iteritems(). Victory is near...
Differential Revision: https://phab.mercurial-scm.org/D7013
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sun, 06 Oct 2019 17:59:15 -0400 |
parents | c59eb1560c44 |
children | d783f945a701 |
rev | line source |
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1 # config.py - configuration parsing for Mercurial |
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2 # |
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3 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import errno |
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11 import os |
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12 |
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13 from .i18n import _ |
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14 from .pycompat import getattr |
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15 from . import ( |
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16 error, |
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17 pycompat, |
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18 util, |
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19 ) |
8144 | 20 |
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21 |
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22 class config(object): |
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23 def __init__(self, data=None, includepaths=None): |
8144 | 24 self._data = {} |
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25 self._unset = [] |
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26 self._includepaths = includepaths or [] |
8144 | 27 if data: |
28 for k in data._data: | |
29 self._data[k] = data[k].copy() | |
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30 self._source = data._source.copy() |
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31 else: |
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32 self._source = util.cowdict() |
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33 |
8144 | 34 def copy(self): |
35 return config(self) | |
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36 |
8144 | 37 def __contains__(self, section): |
38 return section in self._data | |
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39 |
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40 def hasitem(self, section, item): |
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41 return item in self._data.get(section, {}) |
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42 |
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43 def __getitem__(self, section): |
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44 return self._data.get(section, {}) |
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45 |
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46 def __iter__(self): |
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47 for d in self.sections(): |
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48 yield d |
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49 |
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50 def update(self, src): |
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51 self._source = self._source.preparewrite() |
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52 for s, n in src._unset: |
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53 ds = self._data.get(s, None) |
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54 if ds is not None and n in ds: |
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55 self._data[s] = ds.preparewrite() |
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56 del self._data[s][n] |
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57 del self._source[(s, n)] |
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58 for s in src: |
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59 ds = self._data.get(s, None) |
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60 if ds: |
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61 self._data[s] = ds.preparewrite() |
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62 else: |
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63 self._data[s] = util.cowsortdict() |
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64 self._data[s].update(src._data[s]) |
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65 self._source.update(src._source) |
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66 |
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68 return self._data.get(section, {}).get(item, default) |
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69 |
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70 def backup(self, section, item): |
17527 | 71 """return a tuple allowing restore to reinstall a previous value |
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72 |
17530 | 73 The main reason we need it is because it handles the "no data" case. |
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74 """ |
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75 try: |
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76 value = self._data[section][item] |
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77 source = self.source(section, item) |
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78 return (section, item, value, source) |
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79 except KeyError: |
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80 return (section, item) |
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81 |
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82 def source(self, section, item): |
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83 return self._source.get((section, item), b"") |
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84 |
8144 | 85 def sections(self): |
86 return sorted(self._data.keys()) | |
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87 |
8144 | 88 def items(self, section): |
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89 return list(self._data.get(section, {}).iteritems()) |
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90 |
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91 def set(self, section, item, value, source=b""): |
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92 if pycompat.ispy3: |
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93 assert not isinstance( |
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94 section, str |
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95 ), b'config section may not be unicode strings on Python 3' |
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96 assert not isinstance( |
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97 item, str |
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98 ), b'config item may not be unicode strings on Python 3' |
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99 assert not isinstance( |
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100 value, str |
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101 ), b'config values may not be unicode strings on Python 3' |
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103 self._data[section] = util.cowsortdict() |
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104 else: |
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105 self._data[section] = self._data[section].preparewrite() |
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106 self._data[section][item] = value |
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107 if source: |
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108 self._source = self._source.preparewrite() |
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109 self._source[(section, item)] = source |
8144 | 110 |
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111 def restore(self, data): |
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112 """restore data returned by self.backup""" |
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113 self._source = self._source.preparewrite() |
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114 if len(data) == 4: |
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115 # restore old data |
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116 section, item, value, source = data |
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117 self._data[section] = self._data[section].preparewrite() |
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118 self._data[section][item] = value |
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119 self._source[(section, item)] = source |
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120 else: |
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121 # no data before, remove everything |
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122 section, item = data |
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123 if section in self._data: |
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124 self._data[section].pop(item, None) |
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125 self._source.pop((section, item), None) |
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126 |
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127 def parse(self, src, data, sections=None, remap=None, include=None): |
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128 sectionre = util.re.compile(br'\[([^\[]+)\]') |
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129 itemre = util.re.compile(br'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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130 contre = util.re.compile(br'\s+(\S|\S.*\S)\s*$') |
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131 emptyre = util.re.compile(br'(;|#|\s*$)') |
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132 commentre = util.re.compile(br'(;|#)') |
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133 unsetre = util.re.compile(br'%unset\s+(\S+)') |
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134 includere = util.re.compile(br'%include\s+(\S|\S.*\S)\s*$') |
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135 section = b"" |
8144 | 136 item = None |
137 line = 0 | |
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138 cont = False |
8180 | 139 |
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140 if remap: |
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141 section = remap.get(section, section) |
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142 |
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143 for l in data.splitlines(True): |
8144 | 144 line += 1 |
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145 if line == 1 and l.startswith(b'\xef\xbb\xbf'): |
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146 # Someone set us up the BOM |
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147 l = l[3:] |
8144 | 148 if cont: |
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149 if commentre.match(l): |
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150 continue |
8144 | 151 m = contre.match(l) |
152 if m: | |
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153 if sections and section not in sections: |
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154 continue |
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155 v = self.get(section, item) + b"\n" + m.group(1) |
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156 self.set(section, item, v, b"%s:%d" % (src, line)) |
8144 | 157 continue |
158 item = None | |
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159 cont = False |
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160 m = includere.match(l) |
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161 |
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162 if m and include: |
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163 expanded = util.expandpath(m.group(1)) |
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164 includepaths = [os.path.dirname(src)] + self._includepaths |
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165 |
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166 for base in includepaths: |
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167 inc = os.path.normpath(os.path.join(base, expanded)) |
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168 |
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169 try: |
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170 include(inc, remap=remap, sections=sections) |
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171 break |
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172 except IOError as inst: |
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173 if inst.errno != errno.ENOENT: |
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174 raise error.ParseError( |
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175 _(b"cannot include %s (%s)") |
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176 % (inc, inst.strerror), |
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177 b"%s:%d" % (src, line), |
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178 ) |
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179 continue |
8144 | 180 if emptyre.match(l): |
181 continue | |
182 m = sectionre.match(l) | |
183 if m: | |
184 section = m.group(1) | |
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185 if remap: |
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186 section = remap.get(section, section) |
8144 | 187 if section not in self: |
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188 self._data[section] = util.cowsortdict() |
8144 | 189 continue |
190 m = itemre.match(l) | |
191 if m: | |
192 item = m.group(1) | |
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193 cont = True |
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194 if sections and section not in sections: |
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195 continue |
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196 self.set(section, item, m.group(2), b"%s:%d" % (src, line)) |
8144 | 197 continue |
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198 m = unsetre.match(l) |
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199 if m: |
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200 name = m.group(1) |
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201 if sections and section not in sections: |
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202 continue |
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203 if self.get(section, name) is not None: |
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204 self._data[section] = self._data[section].preparewrite() |
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205 del self._data[section][name] |
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206 self._unset.append((section, name)) |
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207 continue |
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208 |
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209 raise error.ParseError(l.rstrip(), (b"%s:%d" % (src, line))) |
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210 |
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211 def read(self, path, fp=None, sections=None, remap=None): |
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212 if not fp: |
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213 fp = util.posixfile(path, b'rb') |
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214 assert ( |
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215 getattr(fp, 'mode', r'rb') == r'rb' |
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216 ), b'config files must be opened in binary mode, got fp=%r mode=%r' % ( |
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217 fp, |
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218 fp.mode, |
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219 ) |
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220 self.parse( |
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221 path, fp.read(), sections=sections, remap=remap, include=self.read |
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222 ) |
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223 |
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224 |
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225 def parselist(value): |
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226 """parse a configuration value as a list of comma/space separated strings |
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227 |
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228 >>> parselist(b'this,is "a small" ,test') |
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229 ['this', 'is', 'a small', 'test'] |
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230 """ |
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231 |
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232 def _parse_plain(parts, s, offset): |
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233 whitespace = False |
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234 while offset < len(s) and ( |
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235 s[offset : offset + 1].isspace() or s[offset : offset + 1] == b',' |
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236 ): |
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237 whitespace = True |
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238 offset += 1 |
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239 if offset >= len(s): |
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240 return None, parts, offset |
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241 if whitespace: |
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242 parts.append(b'') |
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243 if s[offset : offset + 1] == b'"' and not parts[-1]: |
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244 return _parse_quote, parts, offset + 1 |
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245 elif s[offset : offset + 1] == b'"' and parts[-1][-1:] == b'\\': |
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246 parts[-1] = parts[-1][:-1] + s[offset : offset + 1] |
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247 return _parse_plain, parts, offset + 1 |
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248 parts[-1] += s[offset : offset + 1] |
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249 return _parse_plain, parts, offset + 1 |
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250 |
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251 def _parse_quote(parts, s, offset): |
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252 if offset < len(s) and s[offset : offset + 1] == b'"': # "" |
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253 parts.append(b'') |
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254 offset += 1 |
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255 while offset < len(s) and ( |
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256 s[offset : offset + 1].isspace() |
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257 or s[offset : offset + 1] == b',' |
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258 ): |
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259 offset += 1 |
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260 return _parse_plain, parts, offset |
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261 |
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262 while offset < len(s) and s[offset : offset + 1] != b'"': |
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263 if ( |
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264 s[offset : offset + 1] == b'\\' |
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265 and offset + 1 < len(s) |
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266 and s[offset + 1 : offset + 2] == b'"' |
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267 ): |
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268 offset += 1 |
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269 parts[-1] += b'"' |
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270 else: |
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271 parts[-1] += s[offset : offset + 1] |
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272 offset += 1 |
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273 |
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274 if offset >= len(s): |
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275 real_parts = _configlist(parts[-1]) |
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276 if not real_parts: |
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277 parts[-1] = b'"' |
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278 else: |
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279 real_parts[0] = b'"' + real_parts[0] |
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280 parts = parts[:-1] |
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281 parts.extend(real_parts) |
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282 return None, parts, offset |
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283 |
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284 offset += 1 |
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285 while offset < len(s) and s[offset : offset + 1] in [b' ', b',']: |
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286 offset += 1 |
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287 |
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288 if offset < len(s): |
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289 if offset + 1 == len(s) and s[offset : offset + 1] == b'"': |
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290 parts[-1] += b'"' |
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291 offset += 1 |
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292 else: |
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293 parts.append(b'') |
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294 else: |
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295 return None, parts, offset |
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296 |
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297 return _parse_plain, parts, offset |
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298 |
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299 def _configlist(s): |
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300 s = s.rstrip(b' ,') |
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301 if not s: |
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302 return [] |
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303 parser, parts, offset = _parse_plain, [b''], 0 |
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304 while parser: |
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305 parser, parts, offset = parser(parts, s, offset) |
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306 return parts |
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307 |
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308 if value is not None and isinstance(value, bytes): |
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309 result = _configlist(value.lstrip(b' ,\n')) |
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310 else: |
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311 result = value |
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312 return result or [] |