annotate mercurial/config.py @ 25095:3182965b3971

config: give it an includepaths option for looking for config files It is desirable to "derive" templates from the provided templates. A simple way to do this is e.g. %include map-cmdline.default in your own mapfile. Then you only have to redefine a few templates instead of copying over the whole thing. This %include mechanism already works for the built-in templates because by default it *only* looks for files that are in the same directory as the including mapfile. With this changeset, config grows an option to add more include paths for config files.
author Jordi Gutiérrez Hermoso <jordigh@octave.org>
date Fri, 15 May 2015 09:04:32 -0400
parents fdfc9faca273
children 328739ea70c3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 config(object):
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13 def __init__(self, data=None, includepaths=[]):
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14 self._data = {}
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15 self._source = {}
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16 self._unset = []
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17 self._includepaths = includepaths
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18 if data:
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19 for k in data._data:
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20 self._data[k] = data[k].copy()
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21 self._source = data._source.copy()
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22 def copy(self):
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23 return config(self)
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24 def __contains__(self, section):
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25 return section in self._data
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26 def __getitem__(self, section):
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27 return self._data.get(section, {})
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28 def __iter__(self):
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29 for d in self.sections():
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30 yield d
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31 def update(self, src):
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32 for s, n in src._unset:
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33 if s in self and n in self._data[s]:
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34 del self._data[s][n]
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35 del self._source[(s, n)]
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36 for s in src:
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37 if s not in self:
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38 self._data[s] = util.sortdict()
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39 self._data[s].update(src._data[s])
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40 self._source.update(src._source)
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41 def get(self, section, item, default=None):
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42 return self._data.get(section, {}).get(item, default)
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43
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44 def backup(self, section, item):
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45 """return a tuple allowing restore to reinstall a previous value
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46
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47 The main reason we need it is because it handles the "no data" case.
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48 """
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49 try:
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50 value = self._data[section][item]
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51 source = self.source(section, item)
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52 return (section, item, value, source)
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53 except KeyError:
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54 return (section, item)
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55
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56 def source(self, section, item):
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57 return self._source.get((section, item), "")
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58 def sections(self):
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59 return sorted(self._data.keys())
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60 def items(self, section):
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61 return self._data.get(section, {}).items()
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62 def set(self, section, item, value, source=""):
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63 if section not in self:
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64 self._data[section] = util.sortdict()
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65 self._data[section][item] = value
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66 if source:
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67 self._source[(section, item)] = source
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68
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69 def restore(self, data):
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70 """restore data returned by self.backup"""
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71 if len(data) == 4:
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72 # restore old data
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73 section, item, value, source = data
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74 self._data[section][item] = value
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75 self._source[(section, item)] = source
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76 else:
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77 # no data before, remove everything
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78 section, item = data
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79 if section in self._data:
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80 self._data[section].pop(item, None)
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81 self._source.pop((section, item), None)
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82
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83 def parse(self, src, data, sections=None, remap=None, include=None):
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84 sectionre = util.re.compile(r'\[([^\[]+)\]')
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85 itemre = util.re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)')
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86 contre = util.re.compile(r'\s+(\S|\S.*\S)\s*$')
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87 emptyre = util.re.compile(r'(;|#|\s*$)')
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88 commentre = util.re.compile(r'(;|#)')
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89 unsetre = util.re.compile(r'%unset\s+(\S+)')
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90 includere = util.re.compile(r'%include\s+(\S|\S.*\S)\s*$')
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91 section = ""
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92 item = None
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93 line = 0
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94 cont = False
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95
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96 for l in data.splitlines(True):
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97 line += 1
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98 if line == 1 and l.startswith('\xef\xbb\xbf'):
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99 # Someone set us up the BOM
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100 l = l[3:]
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101 if cont:
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102 if commentre.match(l):
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103 continue
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104 m = contre.match(l)
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105 if m:
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106 if sections and section not in sections:
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107 continue
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108 v = self.get(section, item) + "\n" + m.group(1)
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109 self.set(section, item, v, "%s:%d" % (src, line))
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110 continue
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111 item = None
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112 cont = False
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113 m = includere.match(l)
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114
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115 if m and include:
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116 expanded = util.expandpath(m.group(1))
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117 includepaths = [os.path.dirname(src)] + self._includepaths
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118
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119 for base in includepaths:
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120 inc = os.path.normpath(os.path.join(base, expanded))
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121
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122 try:
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123 include(inc, remap=remap, sections=sections)
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124 break
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125 except IOError, inst:
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126 if inst.errno != errno.ENOENT:
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127 raise error.ParseError(_("cannot include %s (%s)")
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128 % (inc, inst.strerror),
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129 "%s:%s" % (src, line))
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130 continue
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131 if emptyre.match(l):
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132 continue
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133 m = sectionre.match(l)
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134 if m:
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parents:
diff changeset
135 section = m.group(1)
8298
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
136 if remap:
9542f4c3fa1b config: make remap actually work
Matt Mackall <mpm@selenic.com>
parents: 8265
diff changeset
137 section = remap.get(section, section)
8144
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parents:
diff changeset
138 if section not in self:
21813
c2262004c2e2 config: move config.sortdict class into util
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 20789
diff changeset
139 self._data[section] = util.sortdict()
8144
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diff changeset
140 continue
fca54469480e ui: introduce new config parser
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
141 m = itemre.match(l)
fca54469480e ui: introduce new config parser
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diff changeset
142 if m:
fca54469480e ui: introduce new config parser
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parents:
diff changeset
143 item = m.group(1)
9339
9be91129c96e config: improve code readability
Andrey <py4fun@gmail.com>
parents: 9136
diff changeset
144 cont = True
8193
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
145 if sections and section not in sections:
94246e90081e config: add section filter to read
Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
146 continue
8265
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
147 self.set(section, item, m.group(2), "%s:%d" % (src, line))
8144
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148 continue
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
149 m = unsetre.match(l)
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
150 if m:
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Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
151 name = m.group(1)
8193
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Matt Mackall <mpm@selenic.com>
parents: 8192
diff changeset
152 if sections and section not in sections:
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parents: 8192
diff changeset
153 continue
13031
3da456d0c885 code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
parents: 11292
diff changeset
154 if self.get(section, name) is not None:
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
155 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
156 self._unset.append((section, name))
8184
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
157 continue
9189afe1eba3 config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents: 8183
diff changeset
158
11288
2123aad24d56 error: add new ParseError for various parsing errors
Matt Mackall <mpm@selenic.com>
parents: 11224
diff changeset
159 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line)))
8265
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parents: 8263
diff changeset
160
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
161 def read(self, path, fp=None, sections=None, remap=None):
52c5be55af82 config: add parse interface
Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
162 if not fp:
13664
53db4e2026ab config: use util.posixfile
Adrian Buehlmann <adrian@cadifra.com>
parents: 13031
diff changeset
163 fp = util.posixfile(path)
8265
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Matt Mackall <mpm@selenic.com>
parents: 8263
diff changeset
164 self.parse(path, fp.read(), sections, remap, self.read)