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annotate mercurial/config.py @ 48981:f5127b87f160

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config: remove conditional asserts We always run on Python 3 now. Differential Revision: https://phab.mercurial-scm.org/D12293
author Gregory Szorc <gregory.szorc@gmail.com>
date Mon, 21 Feb 2022 10:27:34 -0700
parents 6000f5b25c9b
children b4ab4fd23199
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1 # config.py - configuration parsing for Mercurial
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2 #
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3 # Copyright 2009 Olivia Mackall <olivia@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
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9 import errno
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10 import os
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11
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12 from .i18n import _
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13 from .pycompat import getattr
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14 from . import (
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15 encoding,
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16 error,
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17 pycompat,
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18 util,
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19 )
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20
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21
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22 class config(object):
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23 def __init__(self, data=None):
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24 self._current_source_level = 0
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25 self._data = {}
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26 self._unset = []
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27 if data:
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28 for k in data._data:
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29 self._data[k] = data[k].copy()
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30 self._current_source_level = data._current_source_level + 1
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31
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32 def new_source(self):
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33 """increment the source counter
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34
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35 This is used to define source priority when reading"""
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36 self._current_source_level += 1
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37
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38 def copy(self):
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39 return config(self)
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40
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41 def __contains__(self, section):
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42 return section in self._data
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43
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44 def hasitem(self, section, item):
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45 return item in self._data.get(section, {})
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46
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47 def __getitem__(self, section):
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48 return self._data.get(section, {})
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49
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50 def __iter__(self):
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51 for d in self.sections():
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52 yield d
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53
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54 def update(self, src):
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55 current_level = self._current_source_level
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56 current_level += 1
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57 max_level = self._current_source_level
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58 for s, n in src._unset:
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59 ds = self._data.get(s, None)
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60 if ds is not None and n in ds:
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61 self._data[s] = ds.preparewrite()
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62 del self._data[s][n]
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63 for s in src:
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64 ds = self._data.get(s, None)
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65 if ds:
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66 self._data[s] = ds.preparewrite()
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67 else:
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68 self._data[s] = util.cowsortdict()
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69 for k, v in src._data[s].items():
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70 value, source, level = v
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71 level += current_level
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72 max_level = max(level, current_level)
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73 self._data[s][k] = (value, source, level)
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74 self._current_source_level = max_level
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75
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76 def _get(self, section, item):
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77 return self._data.get(section, {}).get(item)
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78
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79 def get(self, section, item, default=None):
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80 result = self._get(section, item)
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81 if result is None:
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82 return default
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83 return result[0]
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84
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85 def backup(self, section, key):
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86 """return a tuple allowing restore to reinstall a previous value
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87
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88 The main reason we need it is because it handles the "no data" case.
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89 """
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90 try:
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91 item = self._data[section][key]
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92 except KeyError:
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93 return (section, key)
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94 else:
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95 return (section, key) + item
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96
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97 def source(self, section, item):
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98 result = self._get(section, item)
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99 if result is None:
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100 return b""
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101 return result[1]
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102
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103 def level(self, section, item):
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104 result = self._get(section, item)
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105 if result is None:
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106 return None
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107 return result[2]
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108
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109 def sections(self):
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110 return sorted(self._data.keys())
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111
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112 def items(self, section):
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113 items = pycompat.iteritems(self._data.get(section, {}))
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114 return [(k, v[0]) for (k, v) in items]
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115
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116 def set(self, section, item, value, source=b""):
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117 assert not isinstance(
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118 section, str
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119 ), b'config section may not be unicode strings on Python 3'
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120 assert not isinstance(
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121 item, str
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122 ), b'config item may not be unicode strings on Python 3'
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123 assert not isinstance(
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124 value, str
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125 ), b'config values may not be unicode strings on Python 3'
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126 if section not in self:
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127 self._data[section] = util.cowsortdict()
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128 else:
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129 self._data[section] = self._data[section].preparewrite()
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130 self._data[section][item] = (value, source, self._current_source_level)
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131
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132 def alter(self, section, key, new_value):
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133 """alter a value without altering its source or level
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134
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135 This method is meant to be used by `ui.fixconfig` only."""
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parents: 45957
diff changeset
136 item = self._data[section][key]
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parents: 45957
diff changeset
137 size = len(item)
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parents: 45957
diff changeset
138 new_item = (new_value,) + item[1:]
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parents: 45957
diff changeset
139 assert len(new_item) == size
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parents: 45957
diff changeset
140 self._data[section][key] = new_item
7621ab4005bf config: use a new `alter` method in `fixconfig`
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parents: 45957
diff changeset
141
15919
69e792cf7851 config: have a way to backup and restore value in config
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 14696
diff changeset
142 def restore(self, data):
69e792cf7851 config: have a way to backup and restore value in config
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 14696
diff changeset
143 """restore data returned by self.backup"""
46660
d3df397e7a59 config: track "source" along side value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46659
diff changeset
144 if len(data) != 2:
15919
69e792cf7851 config: have a way to backup and restore value in config
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parents: 14696
diff changeset
145 # restore old data
46660
d3df397e7a59 config: track "source" along side value
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parents: 46659
diff changeset
146 section, key = data[:2]
d3df397e7a59 config: track "source" along side value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46659
diff changeset
147 item = data[2:]
34358
c41444a39de2 config: use copy-on-write to improve copy performance
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parents: 34146
diff changeset
148 self._data[section] = self._data[section].preparewrite()
46660
d3df397e7a59 config: track "source" along side value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46659
diff changeset
149 self._data[section][key] = item
15919
69e792cf7851 config: have a way to backup and restore value in config
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parents: 14696
diff changeset
150 else:
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parents: 14696
diff changeset
151 # no data before, remove everything
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parents: 14696
diff changeset
152 section, item = data
69e792cf7851 config: have a way to backup and restore value in config
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 14696
diff changeset
153 if section in self._data:
22037
8665c647da6e config: fix restoreconfig of non existing config
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21910
diff changeset
154 self._data[section].pop(item, None)
15919
69e792cf7851 config: have a way to backup and restore value in config
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parents: 14696
diff changeset
155
8265
52c5be55af82 config: add parse interface
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parents: 8263
diff changeset
156 def parse(self, src, data, sections=None, remap=None, include=None):
30359
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
157 sectionre = util.re.compile(br'\[([^\[]+)\]')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
158 itemre = util.re.compile(br'([^=\s][^=]*?)\s*=\s*(.*\S|)')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
159 contre = util.re.compile(br'\s+(\S|\S.*\S)\s*$')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
160 emptyre = util.re.compile(br'(;|#|\s*$)')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
161 commentre = util.re.compile(br'(;|#)')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
162 unsetre = util.re.compile(br'%unset\s+(\S+)')
954002426f78 config: mark parser regexes as bytes explicitly
Augie Fackler <augie@google.com>
parents: 27696
diff changeset
163 includere = util.re.compile(br'%include\s+(\S|\S.*\S)\s*$')
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
164 section = b""
8144
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parents:
diff changeset
165 item = None
fca54469480e ui: introduce new config parser
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parents:
diff changeset
166 line = 0
9339
9be91129c96e config: improve code readability
Andrey <py4fun@gmail.com>
parents: 9136
diff changeset
167 cont = False
8180
6fc30fe7f3e7 hgweb: use config.config
Matt Mackall <mpm@selenic.com>
parents: 8144
diff changeset
168
34713
e5a2cfc524d4 config: allow remapping the default section
Yuya Nishihara <yuya@tcha.org>
parents: 34455
diff changeset
169 if remap:
e5a2cfc524d4 config: allow remapping the default section
Yuya Nishihara <yuya@tcha.org>
parents: 34455
diff changeset
170 section = remap.get(section, section)
e5a2cfc524d4 config: allow remapping the default section
Yuya Nishihara <yuya@tcha.org>
parents: 34455
diff changeset
171
9136
31177742f54a for calls expecting bool args, pass bool instead of int
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 8312
diff changeset
172 for l in data.splitlines(True):
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
173 line += 1
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
174 if line == 1 and l.startswith(b'\xef\xbb\xbf'):
16348
f350021ee32e config: discard UTF-8 BOM if found
Matt Mackall <mpm@selenic.com>
parents: 15919
diff changeset
175 # Someone set us up the BOM
f350021ee32e config: discard UTF-8 BOM if found
Matt Mackall <mpm@selenic.com>
parents: 15919
diff changeset
176 l = l[3:]
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
177 if cont:
14642
fdcdb221a922 config: handle comment lines in continuations (issue2854)
Matt Mackall <mpm@selenic.com>
parents: 14486
diff changeset
178 if commentre.match(l):
fdcdb221a922 config: handle comment lines in continuations (issue2854)
Matt Mackall <mpm@selenic.com>
parents: 14486
diff changeset
179 continue
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
180 m = contre.match(l)
fca54469480e ui: introduce new config parser
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parents:
diff changeset
181 if m:
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
182 if sections and section not in sections:
94246e90081e config: add section filter to read
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parents: 8192
diff changeset
183 continue
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
184 v = self.get(section, item) + b"\n" + m.group(1)
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
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parents: 43076
diff changeset
185 self.set(section, item, v, b"%s:%d" % (src, line))
8144
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parents:
diff changeset
186 continue
fca54469480e ui: introduce new config parser
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parents:
diff changeset
187 item = None
9469
7f0f882af23d config: abort on indented non-continuation lines (issue1829)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 8312
diff changeset
188 cont = False
8183
2858ab754995 config: allow including other config files
Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
189 m = includere.match(l)
25095
3182965b3971 config: give it an includepaths option for looking for config files
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 22419
diff changeset
190
3182965b3971 config: give it an includepaths option for looking for config files
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 22419
diff changeset
191 if m and include:
3182965b3971 config: give it an includepaths option for looking for config files
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 22419
diff changeset
192 expanded = util.expandpath(m.group(1))
45278
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
193 try:
45281
668af67bfd18 config: remove now-unused `abs` argument from `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45280
diff changeset
194 include(expanded, remap=remap, sections=sections)
45278
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
195 except IOError as inst:
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
196 if inst.errno != errno.ENOENT:
45909
9dc1351d0b5f errors: raise ConfigError on failure to parse config file
Martin von Zweigbergk <martinvonz@google.com>
parents: 45800
diff changeset
197 raise error.ConfigError(
45278
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
198 _(b"cannot include %s (%s)")
45281
668af67bfd18 config: remove now-unused `abs` argument from `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45280
diff changeset
199 % (expanded, encoding.strtolocal(inst.strerror)),
45278
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
200 b"%s:%d" % (src, line),
3f54242781e9 config: remove now-unused support for "includepaths"
Martin von Zweigbergk <martinvonz@google.com>
parents: 45244
diff changeset
201 )
8183
2858ab754995 config: allow including other config files
Matt Mackall <mpm@selenic.com>
parents: 8180
diff changeset
202 continue
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
203 if emptyre.match(l):
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
204 continue
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
205 m = sectionre.match(l)
fca54469480e ui: introduce new config parser
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parents:
diff changeset
206 if m:
fca54469480e ui: introduce new config parser
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parents:
diff changeset
207 section = m.group(1)
8298
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
208 if remap:
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
209 section = remap.get(section, section)
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
210 if section not in self:
34358
c41444a39de2 config: use copy-on-write to improve copy performance
Jun Wu <quark@fb.com>
parents: 34146
diff changeset
211 self._data[section] = util.cowsortdict()
8144
fca54469480e ui: introduce new config parser
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parents:
diff changeset
212 continue
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
213 m = itemre.match(l)
fca54469480e ui: introduce new config parser
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parents:
diff changeset
214 if m:
fca54469480e ui: introduce new config parser
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parents:
diff changeset
215 item = m.group(1)
9339
9be91129c96e config: improve code readability
Andrey <py4fun@gmail.com>
parents: 9136
diff changeset
216 cont = True
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
217 if sections and section not in sections:
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
218 continue
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
219 self.set(section, item, m.group(2), b"%s:%d" % (src, line))
8144
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
220 continue
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
221 m = unsetre.match(l)
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
222 if m:
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
223 name = m.group(1)
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
224 if sections and section not in sections:
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
225 continue
13031
3da456d0c885 code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
parents: 11292
diff changeset
226 if self.get(section, name) is not None:
34455
0efdfb57b05c config: add a missing preparewrite() call
Jun Wu <quark@fb.com>
parents: 34358
diff changeset
227 self._data[section] = self._data[section].preparewrite()
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
228 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
229 self._unset.append((section, name))
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
230 continue
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
231
45800
0883413e09bc config: move message about leading spaces in config to config.py
Martin von Zweigbergk <martinvonz@google.com>
parents: 45281
diff changeset
232 message = l.rstrip()
0883413e09bc config: move message about leading spaces in config to config.py
Martin von Zweigbergk <martinvonz@google.com>
parents: 45281
diff changeset
233 if l.startswith(b' '):
0883413e09bc config: move message about leading spaces in config to config.py
Martin von Zweigbergk <martinvonz@google.com>
parents: 45281
diff changeset
234 message = b"unexpected leading whitespace: %s" % message
45909
9dc1351d0b5f errors: raise ConfigError on failure to parse config file
Martin von Zweigbergk <martinvonz@google.com>
parents: 45800
diff changeset
235 raise error.ConfigError(message, (b"%s:%d" % (src, line)))
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
236
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
237 def read(self, path, fp=None, sections=None, remap=None):
46661
a3dced4b7b04 config: track the "level" of a value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46660
diff changeset
238 self.new_source()
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
239 if not fp:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
240 fp = util.posixfile(path, b'rb')
45957
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 45909
diff changeset
241 assert (
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 45909
diff changeset
242 getattr(fp, 'mode', 'rb') == 'rb'
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 45909
diff changeset
243 ), b'config files must be opened in binary mode, got fp=%r mode=%r' % (
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 45909
diff changeset
244 fp,
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 45909
diff changeset
245 fp.mode,
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41342
diff changeset
246 )
45244
f7f142d74df3 config: pass both relative and absolute paths to `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 43554
diff changeset
247
45280
83ca8d6f3206 config: re-calculate absolute %include path in `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45278
diff changeset
248 dir = os.path.dirname(path)
83ca8d6f3206 config: re-calculate absolute %include path in `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45278
diff changeset
249
45281
668af67bfd18 config: remove now-unused `abs` argument from `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45280
diff changeset
250 def include(rel, remap, sections):
45280
83ca8d6f3206 config: re-calculate absolute %include path in `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 45278
diff changeset
251 abs = os.path.normpath(os.path.join(dir, rel))
45244
f7f142d74df3 config: pass both relative and absolute paths to `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 43554
diff changeset
252 self.read(abs, remap=remap, sections=sections)
46661
a3dced4b7b04 config: track the "level" of a value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46660
diff changeset
253 # anything after the include has a higher level
a3dced4b7b04 config: track the "level" of a value
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46660
diff changeset
254 self.new_source()
45244
f7f142d74df3 config: pass both relative and absolute paths to `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 43554
diff changeset
255
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41342
diff changeset
256 self.parse(
45244
f7f142d74df3 config: pass both relative and absolute paths to `include` callback
Martin von Zweigbergk <martinvonz@google.com>
parents: 43554
diff changeset
257 path, fp.read(), sections=sections, remap=remap, include=include
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41342
diff changeset
258 )