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@@ -1,159 +1,159 b'' | |||
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1 | 1 | # config.py - configuration parsing for Mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2009 Matt Mackall <mpm@selenic.com> and others |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from i18n import _ |
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9 | 9 | import error, util |
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10 | 10 | import os, errno |
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11 | 11 | |
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12 | 12 | class config(object): |
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13 | 13 | def __init__(self, data=None): |
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14 | 14 | self._data = {} |
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15 | 15 | self._source = {} |
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16 | 16 | self._unset = [] |
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17 | 17 | if data: |
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18 | 18 | for k in data._data: |
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19 | 19 | self._data[k] = data[k].copy() |
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20 | 20 | self._source = data._source.copy() |
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21 | 21 | def copy(self): |
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22 | 22 | return config(self) |
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23 | 23 | def __contains__(self, section): |
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24 | 24 | return section in self._data |
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25 | 25 | def __getitem__(self, section): |
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26 | 26 | return self._data.get(section, {}) |
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27 | 27 | def __iter__(self): |
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28 | 28 | for d in self.sections(): |
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29 | 29 | yield d |
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30 | 30 | def update(self, src): |
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31 | 31 | for s, n in src._unset: |
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32 | 32 | if s in self and n in self._data[s]: |
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33 | 33 | del self._data[s][n] |
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34 | 34 | del self._source[(s, n)] |
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35 | 35 | for s in src: |
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36 | 36 | if s not in self: |
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37 | 37 | self._data[s] = util.sortdict() |
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38 | 38 | self._data[s].update(src._data[s]) |
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39 | 39 | self._source.update(src._source) |
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40 | 40 | def get(self, section, item, default=None): |
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41 | 41 | return self._data.get(section, {}).get(item, default) |
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42 | 42 | |
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43 | 43 | def backup(self, section, item): |
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44 | 44 | """return a tuple allowing restore to reinstall a previous value |
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45 | 45 | |
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46 | 46 | The main reason we need it is because it handles the "no data" case. |
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47 | 47 | """ |
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48 | 48 | try: |
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49 | 49 | value = self._data[section][item] |
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50 | 50 | source = self.source(section, item) |
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51 | 51 | return (section, item, value, source) |
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52 | 52 | except KeyError: |
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53 | 53 | return (section, item) |
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54 | 54 | |
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55 | 55 | def source(self, section, item): |
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56 | 56 | return self._source.get((section, item), "") |
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57 | 57 | def sections(self): |
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58 | 58 | return sorted(self._data.keys()) |
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59 | 59 | def items(self, section): |
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60 | 60 | return self._data.get(section, {}).items() |
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61 | 61 | def set(self, section, item, value, source=""): |
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62 | 62 | if section not in self: |
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63 | 63 | self._data[section] = util.sortdict() |
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64 | 64 | self._data[section][item] = value |
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65 | 65 | if source: |
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66 | 66 | self._source[(section, item)] = source |
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67 | 67 | |
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68 | 68 | def restore(self, data): |
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69 | 69 | """restore data returned by self.backup""" |
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70 | 70 | if len(data) == 4: |
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71 | 71 | # restore old data |
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72 | 72 | section, item, value, source = data |
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73 | 73 | self._data[section][item] = value |
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74 | 74 | self._source[(section, item)] = source |
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75 | 75 | else: |
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76 | 76 | # no data before, remove everything |
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77 | 77 | section, item = data |
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78 | 78 | if section in self._data: |
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79 | 79 | del self._data[section][item] |
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80 | 80 | self._source.pop((section, item), None) |
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81 | 81 | |
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82 | 82 | def parse(self, src, data, sections=None, remap=None, include=None): |
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83 |
sectionre = util.compile |
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84 |
itemre = util.compile |
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85 |
contre = util.compile |
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86 |
emptyre = util.compile |
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87 |
commentre = util.compile |
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88 |
unsetre = util.compile |
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89 |
includere = util.compile |
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83 | sectionre = util.re.compile(r'\[([^\[]+)\]') | |
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84 | itemre = util.re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)') | |
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85 | contre = util.re.compile(r'\s+(\S|\S.*\S)\s*$') | |
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86 | emptyre = util.re.compile(r'(;|#|\s*$)') | |
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87 | commentre = util.re.compile(r'(;|#)') | |
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88 | unsetre = util.re.compile(r'%unset\s+(\S+)') | |
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89 | includere = util.re.compile(r'%include\s+(\S|\S.*\S)\s*$') | |
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90 | 90 | section = "" |
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91 | 91 | item = None |
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92 | 92 | line = 0 |
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93 | 93 | cont = False |
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94 | 94 | |
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95 | 95 | for l in data.splitlines(True): |
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96 | 96 | line += 1 |
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97 | 97 | if line == 1 and l.startswith('\xef\xbb\xbf'): |
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98 | 98 | # Someone set us up the BOM |
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99 | 99 | l = l[3:] |
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100 | 100 | if cont: |
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101 | 101 | if commentre.match(l): |
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102 | 102 | continue |
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103 | 103 | m = contre.match(l) |
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104 | 104 | if m: |
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105 | 105 | if sections and section not in sections: |
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106 | 106 | continue |
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107 | 107 | v = self.get(section, item) + "\n" + m.group(1) |
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108 | 108 | self.set(section, item, v, "%s:%d" % (src, line)) |
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109 | 109 | continue |
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110 | 110 | item = None |
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111 | 111 | cont = False |
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112 | 112 | m = includere.match(l) |
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113 | 113 | if m: |
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114 | 114 | inc = util.expandpath(m.group(1)) |
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115 | 115 | base = os.path.dirname(src) |
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116 | 116 | inc = os.path.normpath(os.path.join(base, inc)) |
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117 | 117 | if include: |
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118 | 118 | try: |
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119 | 119 | include(inc, remap=remap, sections=sections) |
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120 | 120 | except IOError, inst: |
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121 | 121 | if inst.errno != errno.ENOENT: |
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122 | 122 | raise error.ParseError(_("cannot include %s (%s)") |
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123 | 123 | % (inc, inst.strerror), |
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124 | 124 | "%s:%s" % (src, line)) |
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125 | 125 | continue |
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126 | 126 | if emptyre.match(l): |
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127 | 127 | continue |
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128 | 128 | m = sectionre.match(l) |
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129 | 129 | if m: |
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130 | 130 | section = m.group(1) |
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131 | 131 | if remap: |
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132 | 132 | section = remap.get(section, section) |
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133 | 133 | if section not in self: |
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134 | 134 | self._data[section] = util.sortdict() |
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135 | 135 | continue |
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136 | 136 | m = itemre.match(l) |
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137 | 137 | if m: |
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138 | 138 | item = m.group(1) |
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139 | 139 | cont = True |
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140 | 140 | if sections and section not in sections: |
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141 | 141 | continue |
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142 | 142 | self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
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143 | 143 | continue |
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144 | 144 | m = unsetre.match(l) |
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145 | 145 | if m: |
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146 | 146 | name = m.group(1) |
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147 | 147 | if sections and section not in sections: |
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148 | 148 | continue |
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149 | 149 | if self.get(section, name) is not None: |
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150 | 150 | del self._data[section][name] |
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151 | 151 | self._unset.append((section, name)) |
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152 | 152 | continue |
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153 | 153 | |
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154 | 154 | raise error.ParseError(l.rstrip(), ("%s:%s" % (src, line))) |
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155 | 155 | |
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156 | 156 | def read(self, path, fp=None, sections=None, remap=None): |
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157 | 157 | if not fp: |
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158 | 158 | fp = util.posixfile(path) |
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159 | 159 | self.parse(path, fp.read(), sections, remap, self.read) |
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