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>
date Thu, 27 Feb 2014 12:42:09 -0600
parents 7d82ad4b3727
children d19c9bdbbf35
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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
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6 # GNU General Public License version 2 or any later version.
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7
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8 from i18n import _
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9 import error, util
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10 import os, errno
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11
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12 class sortdict(dict):
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13 'a simple sorted dictionary'
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14 def __init__(self, data=None):
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15 self._list = []
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16 if data:
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17 self.update(data)
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18 def copy(self):
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19 return sortdict(self)
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20 def __setitem__(self, key, val):
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21 if key in self:
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22 self._list.remove(key)
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23 self._list.append(key)
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24 dict.__setitem__(self, key, val)
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25 def __iter__(self):
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26 return self._list.__iter__()
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27 def update(self, src):
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28 for k in src:
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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 = []
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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__()
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42
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43 class config(object):
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44 def __init__(self, data=None):
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45 self._data = {}
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46 self._source = {}
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47 self._unset = []
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48 if data:
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49 for k in data._data:
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50 self._data[k] = data[k].copy()
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51 self._source = data._source.copy()
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52 def copy(self):
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53 return config(self)
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54 def __contains__(self, section):
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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:
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67 if s not in self:
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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)
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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):
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75 """return a tuple allowing restore to reinstall a previous value
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76
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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), "")
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88 def sections(self):
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89 return sorted(self._data.keys())
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90 def items(self, section):
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91 return self._data.get(section, {}).items()
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92 def set(self, section, item, value, source=""):
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93 if section not in self:
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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
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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*$')
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120 section = ""
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121 item = None
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122 line = 0
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123 cont = False
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124
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125 for l in data.splitlines(True):
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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:]
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130 if cont:
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131 if commentre.match(l):
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132 continue
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133 m = contre.match(l)
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134 if m:
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135 if sections and section not in sections:
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136 continue
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137 v = self.get(section, item) + "\n" + m.group(1)
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138 self.set(section, item, v, "%s:%d" % (src, line))
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139 continue
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140 item = None
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141 cont = False
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Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
142 m = includere.match(l)
2858ab754995 config: allow including other config files
Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
143 if m:
11224
f23f87462c18 config: expand hgrc %include paths
Chad Dombrova <chadrik@gmail.com>
parents: 10295
diff changeset
144 inc = util.expandpath(m.group(1))
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
145 base = os.path.dirname(src)
8183
2858ab754995 config: allow including other config files
Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
146 inc = os.path.normpath(os.path.join(base, inc))
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
147 if include:
10042
7cdd2a7db2c2 config: raise ConfigError on non-existing include files
Martin Geisler <mg@lazybytes.net>
parents: 9471
diff changeset
148 try:
7cdd2a7db2c2 config: raise ConfigError on non-existing include files
Martin Geisler <mg@lazybytes.net>
parents: 9471
diff changeset
149 include(inc, remap=remap, sections=sections)
7cdd2a7db2c2 config: raise ConfigError on non-existing include files
Martin Geisler <mg@lazybytes.net>
parents: 9471
diff changeset
150 except IOError, inst:
14486
4e3eda05189b config: ignore include errors for nonexistent files
Matt Mackall <mpm@selenic.com>
parents: 13664
diff changeset
151 if inst.errno != errno.ENOENT:
4e3eda05189b config: ignore include errors for nonexistent files
Matt Mackall <mpm@selenic.com>
parents: 13664
diff changeset
152 raise error.ParseError(_("cannot include %s (%s)")
4e3eda05189b config: ignore include errors for nonexistent files
Matt Mackall <mpm@selenic.com>
parents: 13664
diff changeset
153 % (inc, inst.strerror),
4e3eda05189b config: ignore include errors for nonexistent files
Matt Mackall <mpm@selenic.com>
parents: 13664
diff changeset
154 "%s:%s" % (src, line))
8183
2858ab754995 config: allow including other config files
Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
155 continue
8144
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
156 if emptyre.match(l):
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
157 continue
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
158 m = sectionre.match(l)
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
159 if m:
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
160 section = m.group(1)
8298
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
161 if remap:
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
162 section = remap.get(section, section)
8144
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
163 if section not in self:
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
164 self._data[section] = sortdict()
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
165 continue
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
166 m = itemre.match(l)
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
167 if m:
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
168 item = m.group(1)
9339
9be91129c96e config: improve code readability
Andrey <py4fun@gmail.com>
parents: 9136
diff changeset
169 cont = True
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
170 if sections and section not in sections:
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
171 continue
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
172 self.set(section, item, m.group(2), "%s:%d" % (src, line))
8144
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
173 continue
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
174 m = unsetre.match(l)
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
175 if m:
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
176 name = m.group(1)
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
177 if sections and section not in sections:
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
178 continue
13031
3da456d0c885 code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
parents: 11292
diff changeset
179 if self.get(section, name) is not None:
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
180 del self._data[section][name]
19087
7d82ad4b3727 config: discard "%unset" values defined in the other files read in previously
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 17537
diff changeset
181 self._unset.append((section, name))
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
182 continue
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
183
11288
2123aad24d56 error: add new ParseError for various parsing errors
Matt Mackall <mpm@selenic.com>
parents: 11224
diff changeset
184 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line)))
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
185
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
186 def read(self, path, fp=None, sections=None, remap=None):
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
187 if not fp:
13664
53db4e2026ab config: use util.posixfile
Adrian Buehlmann <adrian@cadifra.com>
parents: 13031
diff changeset
188 fp = util.posixfile(path)
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
189 self.parse(path, fp.read(), sections, remap, self.read)