Mercurial > hg
annotate mercurial/config.py @ 26610:f9f82c444ff7
filemerge: only copy to backup during premerge step
The premerge might leave the original file in an unclean state. Therefore it's
important to only copy the file in the beginning.
author | Siddharth Agarwal <sid0@fb.com> |
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date | Sun, 11 Oct 2015 20:04:40 -0700 |
parents | a027a0813b44 |
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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 |
25923
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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 __getitem__(self, section): |
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34 return self._data.get(section, {}) |
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35 def __iter__(self): |
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36 for d in self.sections(): |
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37 yield d |
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38 def update(self, src): |
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39 for s, n in src._unset: |
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40 if s in self and n in self._data[s]: |
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41 del self._data[s][n] |
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42 del self._source[(s, n)] |
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43 for s in src: |
8144 | 44 if s not in self: |
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45 self._data[s] = util.sortdict() |
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46 self._data[s].update(src._data[s]) |
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47 self._source.update(src._source) |
8144 | 48 def get(self, section, item, default=None): |
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49 return self._data.get(section, {}).get(item, default) |
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50 |
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51 def backup(self, section, item): |
17527 | 52 """return a tuple allowing restore to reinstall a previous value |
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53 |
17530 | 54 The main reason we need it is because it handles the "no data" case. |
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55 """ |
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56 try: |
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57 value = self._data[section][item] |
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58 source = self.source(section, item) |
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59 return (section, item, value, source) |
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60 except KeyError: |
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61 return (section, item) |
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62 |
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63 def source(self, section, item): |
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64 return self._source.get((section, item), "") |
8144 | 65 def sections(self): |
66 return sorted(self._data.keys()) | |
67 def items(self, section): | |
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68 return self._data.get(section, {}).items() |
8144 | 69 def set(self, section, item, value, source=""): |
70 if section not in self: | |
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71 self._data[section] = util.sortdict() |
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72 self._data[section][item] = value |
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73 if source: |
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74 self._source[(section, item)] = source |
8144 | 75 |
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76 def restore(self, data): |
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77 """restore data returned by self.backup""" |
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78 if len(data) == 4: |
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79 # restore old data |
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80 section, item, value, source = data |
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81 self._data[section][item] = value |
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82 self._source[(section, item)] = source |
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83 else: |
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84 # no data before, remove everything |
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85 section, item = data |
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86 if section in self._data: |
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87 self._data[section].pop(item, None) |
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88 self._source.pop((section, item), None) |
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89 |
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90 def parse(self, src, data, sections=None, remap=None, include=None): |
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91 sectionre = util.re.compile(r'\[([^\[]+)\]') |
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92 itemre = util.re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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93 contre = util.re.compile(r'\s+(\S|\S.*\S)\s*$') |
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94 emptyre = util.re.compile(r'(;|#|\s*$)') |
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95 commentre = util.re.compile(r'(;|#)') |
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96 unsetre = util.re.compile(r'%unset\s+(\S+)') |
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97 includere = util.re.compile(r'%include\s+(\S|\S.*\S)\s*$') |
8144 | 98 section = "" |
99 item = None | |
100 line = 0 | |
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101 cont = False |
8180 | 102 |
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103 for l in data.splitlines(True): |
8144 | 104 line += 1 |
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105 if line == 1 and l.startswith('\xef\xbb\xbf'): |
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106 # Someone set us up the BOM |
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107 l = l[3:] |
8144 | 108 if cont: |
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109 if commentre.match(l): |
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110 continue |
8144 | 111 m = contre.match(l) |
112 if m: | |
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113 if sections and section not in sections: |
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114 continue |
8144 | 115 v = self.get(section, item) + "\n" + m.group(1) |
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116 self.set(section, item, v, "%s:%d" % (src, line)) |
8144 | 117 continue |
118 item = None | |
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119 cont = False |
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120 m = includere.match(l) |
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121 |
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122 if m and include: |
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123 expanded = util.expandpath(m.group(1)) |
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124 includepaths = [os.path.dirname(src)] + self._includepaths |
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125 |
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126 for base in includepaths: |
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127 inc = os.path.normpath(os.path.join(base, expanded)) |
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128 |
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129 try: |
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130 include(inc, remap=remap, sections=sections) |
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131 break |
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132 except IOError as inst: |
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133 if inst.errno != errno.ENOENT: |
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134 raise error.ParseError(_("cannot include %s (%s)") |
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135 % (inc, inst.strerror), |
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136 "%s:%s" % (src, line)) |
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137 continue |
8144 | 138 if emptyre.match(l): |
139 continue | |
140 m = sectionre.match(l) | |
141 if m: | |
142 section = m.group(1) | |
8298
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143 if remap: |
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144 section = remap.get(section, section) |
8144 | 145 if section not in self: |
21813
c2262004c2e2
config: move config.sortdict class into util
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146 self._data[section] = util.sortdict() |
8144 | 147 continue |
148 m = itemre.match(l) | |
149 if m: | |
150 item = m.group(1) | |
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151 cont = True |
8193
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152 if sections and section not in sections: |
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153 continue |
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154 self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
8144 | 155 continue |
8184
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config: add %unset name support
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parents:
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diff
changeset
|
156 m = unsetre.match(l) |
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157 if m: |
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diff
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158 name = m.group(1) |
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|
159 if sections and section not in sections: |
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diff
changeset
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160 continue |
13031
3da456d0c885
code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
parents:
11292
diff
changeset
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161 if self.get(section, name) is not None: |
8184
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162 del self._data[section][name] |
19087
7d82ad4b3727
config: discard "%unset" values defined in the other files read in previously
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parents:
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diff
changeset
|
163 self._unset.append((section, name)) |
8184
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changeset
|
164 continue |
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parents:
8183
diff
changeset
|
165 |
11288
2123aad24d56
error: add new ParseError for various parsing errors
Matt Mackall <mpm@selenic.com>
parents:
11224
diff
changeset
|
166 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line))) |
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167 |
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168 def read(self, path, fp=None, sections=None, remap=None): |
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169 if not fp: |
13664
53db4e2026ab
config: use util.posixfile
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
changeset
|
170 fp = util.posixfile(path) |
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changeset
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171 self.parse(path, fp.read(), sections, remap, self.read) |