Mercurial > hg
annotate mercurial/config.py @ 20570:c21e1e3ab915
config: move showconfig code and add config as primary alias
Preparation for adding config --edit to launch an editor
author | Matt Mackall <mpm@selenic.com> |
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date | Thu, 27 Feb 2014 12:42:09 -0600 |
parents | 7d82ad4b3727 |
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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 |
8144 | 8 from i18n import _ |
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9 import error, util |
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10 import os, errno |
8144 | 11 |
12 class sortdict(dict): | |
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13 'a simple sorted dictionary' |
8144 | 14 def __init__(self, data=None): |
15 self._list = [] | |
16 if data: | |
17 self.update(data) | |
18 def copy(self): | |
19 return sortdict(self) | |
20 def __setitem__(self, key, val): | |
21 if key in self: | |
22 self._list.remove(key) | |
23 self._list.append(key) | |
24 dict.__setitem__(self, key, val) | |
25 def __iter__(self): | |
26 return self._list.__iter__() | |
27 def update(self, src): | |
28 for k in src: | |
29 self[k] = src[k] | |
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30 def clear(self): |
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31 dict.clear(self) |
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32 self._list = [] |
8144 | 33 def items(self): |
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34 return [(k, self[k]) for k in self._list] |
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35 def __delitem__(self, key): |
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36 dict.__delitem__(self, key) |
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37 self._list.remove(key) |
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38 def keys(self): |
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39 return self._list |
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40 def iterkeys(self): |
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41 return self._list.__iter__() |
8144 | 42 |
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43 class config(object): |
8144 | 44 def __init__(self, data=None): |
45 self._data = {} | |
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46 self._source = {} |
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47 self._unset = [] |
8144 | 48 if data: |
49 for k in data._data: | |
50 self._data[k] = data[k].copy() | |
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51 self._source = data._source.copy() |
8144 | 52 def copy(self): |
53 return config(self) | |
54 def __contains__(self, section): | |
55 return section in self._data | |
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56 def __getitem__(self, section): |
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57 return self._data.get(section, {}) |
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58 def __iter__(self): |
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59 for d in self.sections(): |
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60 yield d |
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61 def update(self, src): |
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62 for s, n in src._unset: |
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63 if s in self and n in self._data[s]: |
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64 del self._data[s][n] |
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65 del self._source[(s, n)] |
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66 for s in src: |
8144 | 67 if s not in self: |
68 self._data[s] = sortdict() | |
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69 self._data[s].update(src._data[s]) |
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70 self._source.update(src._source) |
8144 | 71 def get(self, section, item, default=None): |
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72 return self._data.get(section, {}).get(item, default) |
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73 |
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74 def backup(self, section, item): |
17527 | 75 """return a tuple allowing restore to reinstall a previous value |
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76 |
17530 | 77 The main reason we need it is because it handles the "no data" case. |
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78 """ |
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79 try: |
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80 value = self._data[section][item] |
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81 source = self.source(section, item) |
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82 return (section, item, value, source) |
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83 except KeyError: |
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84 return (section, item) |
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85 |
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86 def source(self, section, item): |
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87 return self._source.get((section, item), "") |
8144 | 88 def sections(self): |
89 return sorted(self._data.keys()) | |
90 def items(self, section): | |
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91 return self._data.get(section, {}).items() |
8144 | 92 def set(self, section, item, value, source=""): |
93 if section not in self: | |
94 self._data[section] = sortdict() | |
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95 self._data[section][item] = value |
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96 self._source[(section, item)] = source |
8144 | 97 |
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98 def restore(self, data): |
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99 """restore data returned by self.backup""" |
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100 if len(data) == 4: |
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101 # restore old data |
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102 section, item, value, source = data |
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103 self._data[section][item] = value |
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104 self._source[(section, item)] = source |
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105 else: |
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106 # no data before, remove everything |
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107 section, item = data |
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108 if section in self._data: |
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109 del self._data[section][item] |
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110 self._source.pop((section, item), None) |
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111 |
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112 def parse(self, src, data, sections=None, remap=None, include=None): |
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113 sectionre = util.compilere(r'\[([^\[]+)\]') |
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114 itemre = util.compilere(r'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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115 contre = util.compilere(r'\s+(\S|\S.*\S)\s*$') |
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116 emptyre = util.compilere(r'(;|#|\s*$)') |
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117 commentre = util.compilere(r'(;|#)') |
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118 unsetre = util.compilere(r'%unset\s+(\S+)') |
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119 includere = util.compilere(r'%include\s+(\S|\S.*\S)\s*$') |
8144 | 120 section = "" |
121 item = None | |
122 line = 0 | |
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123 cont = False |
8180 | 124 |
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125 for l in data.splitlines(True): |
8144 | 126 line += 1 |
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127 if line == 1 and l.startswith('\xef\xbb\xbf'): |
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128 # Someone set us up the BOM |
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129 l = l[3:] |
8144 | 130 if cont: |
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131 if commentre.match(l): |
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132 continue |
8144 | 133 m = contre.match(l) |
134 if m: | |
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135 if sections and section not in sections: |
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136 continue |
8144 | 137 v = self.get(section, item) + "\n" + m.group(1) |
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138 self.set(section, item, v, "%s:%d" % (src, line)) |
8144 | 139 continue |
140 item = None | |
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141 cont = False |
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142 m = includere.match(l) |
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143 if m: |
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144 inc = util.expandpath(m.group(1)) |
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145 base = os.path.dirname(src) |
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146 inc = os.path.normpath(os.path.join(base, inc)) |
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147 if include: |
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148 try: |
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149 include(inc, remap=remap, sections=sections) |
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150 except IOError, inst: |
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151 if inst.errno != errno.ENOENT: |
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152 raise error.ParseError(_("cannot include %s (%s)") |
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153 % (inc, inst.strerror), |
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154 "%s:%s" % (src, line)) |
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155 continue |
8144 | 156 if emptyre.match(l): |
157 continue | |
158 m = sectionre.match(l) | |
159 if m: | |
160 section = m.group(1) | |
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161 if remap: |
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162 section = remap.get(section, section) |
8144 | 163 if section not in self: |
164 self._data[section] = sortdict() | |
165 continue | |
166 m = itemre.match(l) | |
167 if m: | |
168 item = m.group(1) | |
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169 cont = True |
8193
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170 if sections and section not in sections: |
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171 continue |
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172 self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
8144 | 173 continue |
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174 m = unsetre.match(l) |
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175 if m: |
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176 name = m.group(1) |
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177 if sections and section not in sections: |
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178 continue |
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179 if self.get(section, name) is not None: |
8184
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180 del self._data[section][name] |
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181 self._unset.append((section, name)) |
8184
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182 continue |
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183 |
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error: add new ParseError for various parsing errors
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11224
diff
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184 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line))) |
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185 |
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186 def read(self, path, fp=None, sections=None, remap=None): |
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187 if not fp: |
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188 fp = util.posixfile(path) |
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189 self.parse(path, fp.read(), sections, remap, self.read) |