Mercurial > hg
annotate mercurial/config.py @ 16371:4417eb761ba8
tags: defer tag validation until repo.tags() is called
Before, we were validating all tags for any tag operation, which meant
building a (nearly) full node->tag lookup tree for most operations.
author | Matt Mackall <mpm@selenic.com> |
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date | Fri, 06 Apr 2012 15:16:30 -0500 |
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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 re, 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) |
8144 | 38 |
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39 class config(object): |
8144 | 40 def __init__(self, data=None): |
41 self._data = {} | |
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42 self._source = {} |
8144 | 43 if data: |
44 for k in data._data: | |
45 self._data[k] = data[k].copy() | |
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46 self._source = data._source.copy() |
8144 | 47 def copy(self): |
48 return config(self) | |
49 def __contains__(self, section): | |
50 return section in self._data | |
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51 def __getitem__(self, section): |
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52 return self._data.get(section, {}) |
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53 def __iter__(self): |
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54 for d in self.sections(): |
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55 yield d |
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56 def update(self, src): |
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57 for s in src: |
8144 | 58 if s not in self: |
59 self._data[s] = sortdict() | |
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60 self._data[s].update(src._data[s]) |
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61 self._source.update(src._source) |
8144 | 62 def get(self, section, item, default=None): |
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63 return self._data.get(section, {}).get(item, default) |
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64 |
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65 def backup(self, section, item): |
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66 """return a tuple allowing restore to reinstall a previous valuesi |
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67 |
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68 The main reason we need it is because it handle the "no data" case. |
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69 """ |
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70 try: |
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71 value = self._data[section][item] |
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72 source = self.source(section, item) |
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73 return (section, item, value, source) |
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74 except KeyError: |
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75 return (section, item) |
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76 |
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77 def source(self, section, item): |
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78 return self._source.get((section, item), "") |
8144 | 79 def sections(self): |
80 return sorted(self._data.keys()) | |
81 def items(self, section): | |
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82 return self._data.get(section, {}).items() |
8144 | 83 def set(self, section, item, value, source=""): |
84 if section not in self: | |
85 self._data[section] = sortdict() | |
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86 self._data[section][item] = value |
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87 self._source[(section, item)] = source |
8144 | 88 |
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89 def restore(self, data): |
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90 """restore data returned by self.backup""" |
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91 if len(data) == 4: |
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92 # restore old data |
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93 section, item, value, source = data |
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94 self._data[section][item] = value |
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95 self._source[(section, item)] = source |
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96 else: |
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97 # no data before, remove everything |
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98 section, item = data |
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99 if section in self._data: |
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100 del self._data[section][item] |
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101 self._source.pop((section, item), None) |
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102 |
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103 def parse(self, src, data, sections=None, remap=None, include=None): |
8144 | 104 sectionre = re.compile(r'\[([^\[]+)\]') |
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105 itemre = re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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106 contre = re.compile(r'\s+(\S|\S.*\S)\s*$') |
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107 emptyre = re.compile(r'(;|#|\s*$)') |
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108 commentre = re.compile(r'(;|#)') |
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109 unsetre = re.compile(r'%unset\s+(\S+)') |
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110 includere = re.compile(r'%include\s+(\S|\S.*\S)\s*$') |
8144 | 111 section = "" |
112 item = None | |
113 line = 0 | |
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114 cont = False |
8180 | 115 |
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116 for l in data.splitlines(True): |
8144 | 117 line += 1 |
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118 if line == 1 and l.startswith('\xef\xbb\xbf'): |
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119 # Someone set us up the BOM |
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120 l = l[3:] |
8144 | 121 if cont: |
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122 if commentre.match(l): |
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123 continue |
8144 | 124 m = contre.match(l) |
125 if m: | |
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126 if sections and section not in sections: |
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127 continue |
8144 | 128 v = self.get(section, item) + "\n" + m.group(1) |
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129 self.set(section, item, v, "%s:%d" % (src, line)) |
8144 | 130 continue |
131 item = None | |
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132 cont = False |
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133 m = includere.match(l) |
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134 if m: |
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135 inc = util.expandpath(m.group(1)) |
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136 base = os.path.dirname(src) |
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137 inc = os.path.normpath(os.path.join(base, inc)) |
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138 if include: |
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139 try: |
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140 include(inc, remap=remap, sections=sections) |
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141 except IOError, inst: |
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142 if inst.errno != errno.ENOENT: |
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143 raise error.ParseError(_("cannot include %s (%s)") |
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144 % (inc, inst.strerror), |
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145 "%s:%s" % (src, line)) |
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146 continue |
8144 | 147 if emptyre.match(l): |
148 continue | |
149 m = sectionre.match(l) | |
150 if m: | |
151 section = m.group(1) | |
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152 if remap: |
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153 section = remap.get(section, section) |
8144 | 154 if section not in self: |
155 self._data[section] = sortdict() | |
156 continue | |
157 m = itemre.match(l) | |
158 if m: | |
159 item = m.group(1) | |
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160 cont = True |
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161 if sections and section not in sections: |
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162 continue |
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163 self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
8144 | 164 continue |
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165 m = unsetre.match(l) |
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166 if m: |
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167 name = m.group(1) |
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168 if sections and section not in sections: |
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169 continue |
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code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
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170 if self.get(section, name) is not None: |
8184
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config: add %unset name support
Matt Mackall <mpm@selenic.com>
parents:
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171 del self._data[section][name] |
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parents:
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172 continue |
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parents:
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changeset
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173 |
11288
2123aad24d56
error: add new ParseError for various parsing errors
Matt Mackall <mpm@selenic.com>
parents:
11224
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changeset
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174 raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line))) |
8265
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config: add parse interface
Matt Mackall <mpm@selenic.com>
parents:
8263
diff
changeset
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175 |
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parents:
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diff
changeset
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176 def read(self, path, fp=None, sections=None, remap=None): |
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parents:
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changeset
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177 if not fp: |
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53db4e2026ab
config: use util.posixfile
Adrian Buehlmann <adrian@cadifra.com>
parents:
13031
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changeset
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178 fp = util.posixfile(path) |
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parents:
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changeset
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179 self.parse(path, fp.read(), sections, remap, self.read) |