Mercurial > hg
annotate mercurial/config.py @ 37578:56df2ca5c032
py3: prevent transformer from adding b'' by adding r'' prefix
These are cases where we need to use str, therefore we add r'' prefix.
# skip-blame because just r'' prefixes
Differential Revision: https://phab.mercurial-scm.org/D3276
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Thu, 12 Apr 2018 14:28:08 +0530 |
parents | 6d6bc544467a |
children | 48378d0e9479 |
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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 . import ( |
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15 error, |
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16 pycompat, |
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17 util, |
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18 ) |
8144 | 19 |
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20 class config(object): |
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21 def __init__(self, data=None, includepaths=None): |
8144 | 22 self._data = {} |
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23 self._unset = [] |
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24 self._includepaths = includepaths or [] |
8144 | 25 if data: |
26 for k in data._data: | |
27 self._data[k] = data[k].copy() | |
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28 self._source = data._source.copy() |
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29 else: |
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30 self._source = util.cowdict() |
8144 | 31 def copy(self): |
32 return config(self) | |
33 def __contains__(self, section): | |
34 return section in self._data | |
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35 def hasitem(self, section, item): |
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36 return item in self._data.get(section, {}) |
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37 def __getitem__(self, section): |
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38 return self._data.get(section, {}) |
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39 def __iter__(self): |
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40 for d in self.sections(): |
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41 yield d |
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42 def update(self, src): |
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43 self._source = self._source.preparewrite() |
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44 for s, n in src._unset: |
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45 ds = self._data.get(s, None) |
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46 if ds is not None and n in ds: |
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47 self._data[s] = ds.preparewrite() |
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48 del self._data[s][n] |
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49 del self._source[(s, n)] |
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50 for s in src: |
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51 ds = self._data.get(s, None) |
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52 if ds: |
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53 self._data[s] = ds.preparewrite() |
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54 else: |
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55 self._data[s] = util.cowsortdict() |
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56 self._data[s].update(src._data[s]) |
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57 self._source.update(src._source) |
8144 | 58 def get(self, section, item, default=None): |
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59 return self._data.get(section, {}).get(item, default) |
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60 |
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61 def backup(self, section, item): |
17527 | 62 """return a tuple allowing restore to reinstall a previous value |
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63 |
17530 | 64 The main reason we need it is because it handles the "no data" case. |
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65 """ |
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66 try: |
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67 value = self._data[section][item] |
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68 source = self.source(section, item) |
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69 return (section, item, value, source) |
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70 except KeyError: |
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71 return (section, item) |
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72 |
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73 def source(self, section, item): |
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74 return self._source.get((section, item), "") |
8144 | 75 def sections(self): |
76 return sorted(self._data.keys()) | |
77 def items(self, section): | |
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78 return list(self._data.get(section, {}).iteritems()) |
8144 | 79 def set(self, section, item, value, source=""): |
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80 if pycompat.ispy3: |
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81 assert not isinstance(value, str), ( |
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82 'config values may not be unicode strings on Python 3') |
8144 | 83 if section not in self: |
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84 self._data[section] = util.cowsortdict() |
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85 else: |
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86 self._data[section] = self._data[section].preparewrite() |
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87 self._data[section][item] = value |
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88 if source: |
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89 self._source = self._source.preparewrite() |
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90 self._source[(section, item)] = source |
8144 | 91 |
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92 def restore(self, data): |
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93 """restore data returned by self.backup""" |
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94 self._source = self._source.preparewrite() |
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95 if len(data) == 4: |
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96 # restore old data |
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97 section, item, value, source = data |
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98 self._data[section] = self._data[section].preparewrite() |
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99 self._data[section][item] = value |
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100 self._source[(section, item)] = source |
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101 else: |
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102 # no data before, remove everything |
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103 section, item = data |
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104 if section in self._data: |
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105 self._data[section].pop(item, None) |
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106 self._source.pop((section, item), None) |
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107 |
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108 def parse(self, src, data, sections=None, remap=None, include=None): |
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109 sectionre = util.re.compile(br'\[([^\[]+)\]') |
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110 itemre = util.re.compile(br'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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111 contre = util.re.compile(br'\s+(\S|\S.*\S)\s*$') |
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112 emptyre = util.re.compile(br'(;|#|\s*$)') |
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113 commentre = util.re.compile(br'(;|#)') |
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114 unsetre = util.re.compile(br'%unset\s+(\S+)') |
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115 includere = util.re.compile(br'%include\s+(\S|\S.*\S)\s*$') |
8144 | 116 section = "" |
117 item = None | |
118 line = 0 | |
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119 cont = False |
8180 | 120 |
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121 if remap: |
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122 section = remap.get(section, section) |
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123 |
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124 for l in data.splitlines(True): |
8144 | 125 line += 1 |
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126 if line == 1 and l.startswith('\xef\xbb\xbf'): |
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127 # Someone set us up the BOM |
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128 l = l[3:] |
8144 | 129 if cont: |
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130 if commentre.match(l): |
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131 continue |
8144 | 132 m = contre.match(l) |
133 if m: | |
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134 if sections and section not in sections: |
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135 continue |
8144 | 136 v = self.get(section, item) + "\n" + m.group(1) |
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137 self.set(section, item, v, "%s:%d" % (src, line)) |
8144 | 138 continue |
139 item = None | |
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140 cont = False |
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141 m = includere.match(l) |
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142 |
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143 if m and include: |
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144 expanded = util.expandpath(m.group(1)) |
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145 includepaths = [os.path.dirname(src)] + self._includepaths |
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146 |
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147 for base in includepaths: |
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148 inc = os.path.normpath(os.path.join(base, expanded)) |
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149 |
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150 try: |
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151 include(inc, remap=remap, sections=sections) |
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152 break |
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153 except IOError as inst: |
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154 if inst.errno != errno.ENOENT: |
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155 raise error.ParseError(_("cannot include %s (%s)") |
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156 % (inc, inst.strerror), |
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157 "%s:%d" % (src, line)) |
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158 continue |
8144 | 159 if emptyre.match(l): |
160 continue | |
161 m = sectionre.match(l) | |
162 if m: | |
163 section = m.group(1) | |
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164 if remap: |
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165 section = remap.get(section, section) |
8144 | 166 if section not in self: |
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167 self._data[section] = util.cowsortdict() |
8144 | 168 continue |
169 m = itemre.match(l) | |
170 if m: | |
171 item = m.group(1) | |
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172 cont = True |
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173 if sections and section not in sections: |
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174 continue |
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175 self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
8144 | 176 continue |
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177 m = unsetre.match(l) |
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178 if m: |
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179 name = m.group(1) |
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180 if sections and section not in sections: |
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181 continue |
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182 if self.get(section, name) is not None: |
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183 self._data[section] = self._data[section].preparewrite() |
8184
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184 del self._data[section][name] |
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185 self._unset.append((section, name)) |
8184
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186 continue |
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187 |
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188 raise error.ParseError(l.rstrip(), ("%s:%d" % (src, line))) |
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189 |
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190 def read(self, path, fp=None, sections=None, remap=None): |
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191 if not fp: |
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192 fp = util.posixfile(path, 'rb') |
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193 assert getattr(fp, 'mode', r'rb') == r'rb', ( |
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194 'config files must be opened in binary mode, got fp=%r mode=%r' % ( |
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195 fp, fp.mode)) |
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196 self.parse(path, fp.read(), |
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197 sections=sections, remap=remap, include=self.read) |
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198 |
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199 def parselist(value): |
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200 """parse a configuration value as a list of comma/space separated strings |
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201 |
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202 >>> parselist(b'this,is "a small" ,test') |
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203 ['this', 'is', 'a small', 'test'] |
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204 """ |
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205 |
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206 def _parse_plain(parts, s, offset): |
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207 whitespace = False |
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208 while offset < len(s) and (s[offset:offset + 1].isspace() |
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209 or s[offset:offset + 1] == ','): |
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210 whitespace = True |
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211 offset += 1 |
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212 if offset >= len(s): |
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213 return None, parts, offset |
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214 if whitespace: |
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215 parts.append('') |
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216 if s[offset:offset + 1] == '"' and not parts[-1]: |
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217 return _parse_quote, parts, offset + 1 |
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218 elif s[offset:offset + 1] == '"' and parts[-1][-1] == '\\': |
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219 parts[-1] = parts[-1][:-1] + s[offset:offset + 1] |
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220 return _parse_plain, parts, offset + 1 |
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221 parts[-1] += s[offset:offset + 1] |
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222 return _parse_plain, parts, offset + 1 |
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223 |
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224 def _parse_quote(parts, s, offset): |
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225 if offset < len(s) and s[offset:offset + 1] == '"': # "" |
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226 parts.append('') |
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227 offset += 1 |
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228 while offset < len(s) and (s[offset:offset + 1].isspace() or |
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229 s[offset:offset + 1] == ','): |
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230 offset += 1 |
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231 return _parse_plain, parts, offset |
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232 |
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233 while offset < len(s) and s[offset:offset + 1] != '"': |
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234 if (s[offset:offset + 1] == '\\' and offset + 1 < len(s) |
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235 and s[offset + 1:offset + 2] == '"'): |
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236 offset += 1 |
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237 parts[-1] += '"' |
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238 else: |
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239 parts[-1] += s[offset:offset + 1] |
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240 offset += 1 |
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241 |
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242 if offset >= len(s): |
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243 real_parts = _configlist(parts[-1]) |
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244 if not real_parts: |
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245 parts[-1] = '"' |
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246 else: |
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247 real_parts[0] = '"' + real_parts[0] |
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248 parts = parts[:-1] |
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249 parts.extend(real_parts) |
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250 return None, parts, offset |
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251 |
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252 offset += 1 |
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253 while offset < len(s) and s[offset:offset + 1] in [' ', ',']: |
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254 offset += 1 |
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255 |
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256 if offset < len(s): |
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257 if offset + 1 == len(s) and s[offset:offset + 1] == '"': |
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258 parts[-1] += '"' |
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259 offset += 1 |
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260 else: |
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261 parts.append('') |
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262 else: |
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263 return None, parts, offset |
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264 |
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265 return _parse_plain, parts, offset |
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266 |
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267 def _configlist(s): |
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268 s = s.rstrip(' ,') |
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269 if not s: |
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270 return [] |
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271 parser, parts, offset = _parse_plain, [''], 0 |
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272 while parser: |
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273 parser, parts, offset = parser(parts, s, offset) |
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274 return parts |
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275 |
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276 if value is not None and isinstance(value, bytes): |
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277 result = _configlist(value.lstrip(' ,\n')) |
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278 else: |
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279 result = value |
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280 return result or [] |