Mercurial > hg
annotate mercurial/config.py @ 30136:8797eadb5d90
checkcopies: minor change to comment
This helped me understand the refactoring so this must be helpful.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Sat, 08 Oct 2016 19:03:16 +0200 |
parents | e70c97cc9243 |
children | 954002426f78 |
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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 util, |
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17 ) |
8144 | 18 |
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19 class config(object): |
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20 def __init__(self, data=None, includepaths=[]): |
8144 | 21 self._data = {} |
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22 self._source = {} |
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23 self._unset = [] |
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24 self._includepaths = includepaths |
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() |
8144 | 29 def copy(self): |
30 return config(self) | |
31 def __contains__(self, section): | |
32 return section in self._data | |
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33 def hasitem(self, section, item): |
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34 return item in self._data.get(section, {}) |
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35 def __getitem__(self, section): |
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36 return self._data.get(section, {}) |
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37 def __iter__(self): |
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38 for d in self.sections(): |
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39 yield d |
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40 def update(self, src): |
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41 for s, n in src._unset: |
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42 if s in self and n in self._data[s]: |
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43 del self._data[s][n] |
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44 del self._source[(s, n)] |
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45 for s in src: |
8144 | 46 if s not in self: |
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47 self._data[s] = util.sortdict() |
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48 self._data[s].update(src._data[s]) |
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49 self._source.update(src._source) |
8144 | 50 def get(self, section, item, default=None): |
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51 return self._data.get(section, {}).get(item, default) |
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52 |
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53 def backup(self, section, item): |
17527 | 54 """return a tuple allowing restore to reinstall a previous value |
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55 |
17530 | 56 The main reason we need it is because it handles the "no data" case. |
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57 """ |
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58 try: |
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59 value = self._data[section][item] |
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60 source = self.source(section, item) |
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61 return (section, item, value, source) |
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62 except KeyError: |
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63 return (section, item) |
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64 |
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65 def source(self, section, item): |
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66 return self._source.get((section, item), "") |
8144 | 67 def sections(self): |
68 return sorted(self._data.keys()) | |
69 def items(self, section): | |
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70 return self._data.get(section, {}).items() |
8144 | 71 def set(self, section, item, value, source=""): |
72 if section not in self: | |
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73 self._data[section] = util.sortdict() |
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74 self._data[section][item] = value |
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75 if source: |
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76 self._source[(section, item)] = source |
8144 | 77 |
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78 def restore(self, data): |
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79 """restore data returned by self.backup""" |
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80 if len(data) == 4: |
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81 # restore old data |
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82 section, item, value, source = data |
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83 self._data[section][item] = value |
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84 self._source[(section, item)] = source |
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85 else: |
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86 # no data before, remove everything |
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87 section, item = data |
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88 if section in self._data: |
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89 self._data[section].pop(item, None) |
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90 self._source.pop((section, item), None) |
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91 |
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92 def parse(self, src, data, sections=None, remap=None, include=None): |
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93 sectionre = util.re.compile(r'\[([^\[]+)\]') |
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94 itemre = util.re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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95 contre = util.re.compile(r'\s+(\S|\S.*\S)\s*$') |
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96 emptyre = util.re.compile(r'(;|#|\s*$)') |
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97 commentre = util.re.compile(r'(;|#)') |
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98 unsetre = util.re.compile(r'%unset\s+(\S+)') |
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99 includere = util.re.compile(r'%include\s+(\S|\S.*\S)\s*$') |
8144 | 100 section = "" |
101 item = None | |
102 line = 0 | |
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103 cont = False |
8180 | 104 |
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105 for l in data.splitlines(True): |
8144 | 106 line += 1 |
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107 if line == 1 and l.startswith('\xef\xbb\xbf'): |
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108 # Someone set us up the BOM |
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109 l = l[3:] |
8144 | 110 if cont: |
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111 if commentre.match(l): |
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112 continue |
8144 | 113 m = contre.match(l) |
114 if m: | |
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115 if sections and section not in sections: |
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116 continue |
8144 | 117 v = self.get(section, item) + "\n" + m.group(1) |
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118 self.set(section, item, v, "%s:%d" % (src, line)) |
8144 | 119 continue |
120 item = None | |
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121 cont = False |
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122 m = includere.match(l) |
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123 |
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124 if m and include: |
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125 expanded = util.expandpath(m.group(1)) |
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126 includepaths = [os.path.dirname(src)] + self._includepaths |
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127 |
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128 for base in includepaths: |
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129 inc = os.path.normpath(os.path.join(base, expanded)) |
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130 |
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131 try: |
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132 include(inc, remap=remap, sections=sections) |
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133 break |
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134 except IOError as inst: |
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135 if inst.errno != errno.ENOENT: |
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136 raise error.ParseError(_("cannot include %s (%s)") |
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137 % (inc, inst.strerror), |
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138 "%s:%s" % (src, line)) |
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config: allow including other config files
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diff
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139 continue |
8144 | 140 if emptyre.match(l): |
141 continue | |
142 m = sectionre.match(l) | |
143 if m: | |
144 section = m.group(1) | |
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145 if remap: |
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146 section = remap.get(section, section) |
8144 | 147 if section not in self: |
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config: move config.sortdict class into util
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148 self._data[section] = util.sortdict() |
8144 | 149 continue |
150 m = itemre.match(l) | |
151 if m: | |
152 item = m.group(1) | |
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153 cont = True |
8193
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154 if sections and section not in sections: |
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155 continue |
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156 self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
8144 | 157 continue |
8184
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158 m = unsetre.match(l) |
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159 if m: |
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160 name = m.group(1) |
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161 if sections and section not in sections: |
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diff
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162 continue |
13031
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code style: prefer 'is' and 'is not' tests with singletons
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parents:
11292
diff
changeset
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163 if self.get(section, name) is not None: |
8184
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parents:
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164 del self._data[section][name] |
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config: discard "%unset" values defined in the other files read in previously
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165 self._unset.append((section, name)) |
8184
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166 continue |
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diff
changeset
|
167 |
11288
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error: add new ParseError for various parsing errors
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parents:
11224
diff
changeset
|
168 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line))) |
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169 |
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170 def read(self, path, fp=None, sections=None, remap=None): |
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171 if not fp: |
13664
53db4e2026ab
config: use util.posixfile
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
172 fp = util.posixfile(path) |
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changeset
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173 self.parse(path, fp.read(), sections, remap, self.read) |