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@@ -1,280 +1,280 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 __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import errno |
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11 | 11 | import os |
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12 | 12 | |
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13 | 13 | from .i18n import _ |
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14 | 14 | from . import ( |
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15 | 15 | error, |
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16 | 16 | pycompat, |
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17 | 17 | util, |
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18 | 18 | ) |
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19 | 19 | |
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20 | 20 | class config(object): |
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21 | 21 | def __init__(self, data=None, includepaths=None): |
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22 | 22 | self._data = {} |
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23 | 23 | self._unset = [] |
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24 | 24 | self._includepaths = includepaths or [] |
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25 | 25 | if data: |
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26 | 26 | for k in data._data: |
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27 | 27 | self._data[k] = data[k].copy() |
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28 | 28 | self._source = data._source.copy() |
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29 | 29 | else: |
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30 | 30 | self._source = util.cowdict() |
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31 | 31 | def copy(self): |
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32 | 32 | return config(self) |
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33 | 33 | def __contains__(self, section): |
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34 | 34 | return section in self._data |
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35 | 35 | def hasitem(self, section, item): |
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36 | 36 | return item in self._data.get(section, {}) |
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37 | 37 | def __getitem__(self, section): |
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38 | 38 | return self._data.get(section, {}) |
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39 | 39 | def __iter__(self): |
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40 | 40 | for d in self.sections(): |
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41 | 41 | yield d |
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42 | 42 | def update(self, src): |
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43 | 43 | self._source = self._source.preparewrite() |
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44 | 44 | for s, n in src._unset: |
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45 | 45 | ds = self._data.get(s, None) |
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46 | 46 | if ds is not None and n in ds: |
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47 | 47 | self._data[s] = ds.preparewrite() |
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48 | 48 | del self._data[s][n] |
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49 | 49 | del self._source[(s, n)] |
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50 | 50 | for s in src: |
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51 | 51 | ds = self._data.get(s, None) |
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52 | 52 | if ds: |
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53 | 53 | self._data[s] = ds.preparewrite() |
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54 | 54 | else: |
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55 | 55 | self._data[s] = util.cowsortdict() |
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56 | 56 | self._data[s].update(src._data[s]) |
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57 | 57 | self._source.update(src._source) |
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58 | 58 | def get(self, section, item, default=None): |
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59 | 59 | return self._data.get(section, {}).get(item, default) |
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60 | 60 | |
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61 | 61 | def backup(self, section, item): |
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62 | 62 | """return a tuple allowing restore to reinstall a previous value |
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63 | 63 | |
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64 | 64 | The main reason we need it is because it handles the "no data" case. |
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65 | 65 | """ |
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66 | 66 | try: |
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67 | 67 | value = self._data[section][item] |
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68 | 68 | source = self.source(section, item) |
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69 | 69 | return (section, item, value, source) |
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70 | 70 | except KeyError: |
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71 | 71 | return (section, item) |
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72 | 72 | |
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73 | 73 | def source(self, section, item): |
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74 | 74 | return self._source.get((section, item), "") |
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75 | 75 | def sections(self): |
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76 | 76 | return sorted(self._data.keys()) |
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77 | 77 | def items(self, section): |
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78 | 78 | return list(self._data.get(section, {}).iteritems()) |
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79 | 79 | def set(self, section, item, value, source=""): |
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80 | 80 | if pycompat.ispy3: |
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81 | 81 | assert not isinstance(value, str), ( |
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82 | 82 | 'config values may not be unicode strings on Python 3') |
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83 | 83 | if section not in self: |
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84 | 84 | self._data[section] = util.cowsortdict() |
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85 | 85 | else: |
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86 | 86 | self._data[section] = self._data[section].preparewrite() |
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87 | 87 | self._data[section][item] = value |
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88 | 88 | if source: |
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89 | 89 | self._source = self._source.preparewrite() |
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90 | 90 | self._source[(section, item)] = source |
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91 | 91 | |
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92 | 92 | def restore(self, data): |
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93 | 93 | """restore data returned by self.backup""" |
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94 | 94 | self._source = self._source.preparewrite() |
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95 | 95 | if len(data) == 4: |
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96 | 96 | # restore old data |
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97 | 97 | section, item, value, source = data |
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98 | 98 | self._data[section] = self._data[section].preparewrite() |
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99 | 99 | self._data[section][item] = value |
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100 | 100 | self._source[(section, item)] = source |
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101 | 101 | else: |
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102 | 102 | # no data before, remove everything |
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103 | 103 | section, item = data |
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104 | 104 | if section in self._data: |
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105 | 105 | self._data[section].pop(item, None) |
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106 | 106 | self._source.pop((section, item), None) |
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107 | 107 | |
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108 | 108 | def parse(self, src, data, sections=None, remap=None, include=None): |
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109 | 109 | sectionre = util.re.compile(br'\[([^\[]+)\]') |
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110 | 110 | itemre = util.re.compile(br'([^=\s][^=]*?)\s*=\s*(.*\S|)') |
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111 | 111 | contre = util.re.compile(br'\s+(\S|\S.*\S)\s*$') |
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112 | 112 | emptyre = util.re.compile(br'(;|#|\s*$)') |
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113 | 113 | commentre = util.re.compile(br'(;|#)') |
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114 | 114 | unsetre = util.re.compile(br'%unset\s+(\S+)') |
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115 | 115 | includere = util.re.compile(br'%include\s+(\S|\S.*\S)\s*$') |
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116 | 116 | section = "" |
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117 | 117 | item = None |
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118 | 118 | line = 0 |
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119 | 119 | cont = False |
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120 | 120 | |
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121 | 121 | if remap: |
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122 | 122 | section = remap.get(section, section) |
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123 | 123 | |
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124 | 124 | for l in data.splitlines(True): |
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125 | 125 | line += 1 |
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126 | 126 | if line == 1 and l.startswith('\xef\xbb\xbf'): |
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127 | 127 | # Someone set us up the BOM |
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128 | 128 | l = l[3:] |
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129 | 129 | if cont: |
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130 | 130 | if commentre.match(l): |
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131 | 131 | continue |
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132 | 132 | m = contre.match(l) |
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133 | 133 | if m: |
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134 | 134 | if sections and section not in sections: |
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135 | 135 | continue |
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136 | 136 | v = self.get(section, item) + "\n" + m.group(1) |
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137 | 137 | self.set(section, item, v, "%s:%d" % (src, line)) |
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138 | 138 | continue |
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139 | 139 | item = None |
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140 | 140 | cont = False |
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141 | 141 | m = includere.match(l) |
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142 | 142 | |
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143 | 143 | if m and include: |
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144 | 144 | expanded = util.expandpath(m.group(1)) |
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145 | 145 | includepaths = [os.path.dirname(src)] + self._includepaths |
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146 | 146 | |
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147 | 147 | for base in includepaths: |
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148 | 148 | inc = os.path.normpath(os.path.join(base, expanded)) |
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149 | 149 | |
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150 | 150 | try: |
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151 | 151 | include(inc, remap=remap, sections=sections) |
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152 | 152 | break |
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153 | 153 | except IOError as inst: |
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154 | 154 | if inst.errno != errno.ENOENT: |
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155 | 155 | raise error.ParseError(_("cannot include %s (%s)") |
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156 | 156 | % (inc, inst.strerror), |
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157 |
"%s:% |
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157 | "%s:%d" % (src, line)) | |
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158 | 158 | continue |
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159 | 159 | if emptyre.match(l): |
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160 | 160 | continue |
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161 | 161 | m = sectionre.match(l) |
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162 | 162 | if m: |
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163 | 163 | section = m.group(1) |
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164 | 164 | if remap: |
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165 | 165 | section = remap.get(section, section) |
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166 | 166 | if section not in self: |
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167 | 167 | self._data[section] = util.cowsortdict() |
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168 | 168 | continue |
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169 | 169 | m = itemre.match(l) |
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170 | 170 | if m: |
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171 | 171 | item = m.group(1) |
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172 | 172 | cont = True |
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173 | 173 | if sections and section not in sections: |
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174 | 174 | continue |
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175 | 175 | self.set(section, item, m.group(2), "%s:%d" % (src, line)) |
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176 | 176 | continue |
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177 | 177 | m = unsetre.match(l) |
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178 | 178 | if m: |
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179 | 179 | name = m.group(1) |
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180 | 180 | if sections and section not in sections: |
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181 | 181 | continue |
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182 | 182 | if self.get(section, name) is not None: |
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183 | 183 | self._data[section] = self._data[section].preparewrite() |
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184 | 184 | del self._data[section][name] |
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185 | 185 | self._unset.append((section, name)) |
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186 | 186 | continue |
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187 | 187 | |
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188 |
raise error.ParseError(l.rstrip(), ("%s:% |
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188 | raise error.ParseError(l.rstrip(), ("%s:%d" % (src, line))) | |
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189 | 189 | |
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190 | 190 | def read(self, path, fp=None, sections=None, remap=None): |
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191 | 191 | if not fp: |
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192 | 192 | fp = util.posixfile(path, 'rb') |
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193 | 193 | assert getattr(fp, 'mode', r'rb') == r'rb', ( |
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194 | 194 | 'config files must be opened in binary mode, got fp=%r mode=%r' % ( |
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195 | 195 | fp, fp.mode)) |
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196 | 196 | self.parse(path, fp.read(), |
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197 | 197 | sections=sections, remap=remap, include=self.read) |
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198 | 198 | |
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199 | 199 | def parselist(value): |
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200 | 200 | """parse a configuration value as a list of comma/space separated strings |
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201 | 201 | |
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202 | 202 | >>> parselist(b'this,is "a small" ,test') |
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203 | 203 | ['this', 'is', 'a small', 'test'] |
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204 | 204 | """ |
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205 | 205 | |
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206 | 206 | def _parse_plain(parts, s, offset): |
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207 | 207 | whitespace = False |
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208 | 208 | while offset < len(s) and (s[offset:offset + 1].isspace() |
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209 | 209 | or s[offset:offset + 1] == ','): |
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210 | 210 | whitespace = True |
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211 | 211 | offset += 1 |
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212 | 212 | if offset >= len(s): |
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213 | 213 | return None, parts, offset |
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214 | 214 | if whitespace: |
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215 | 215 | parts.append('') |
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216 | 216 | if s[offset:offset + 1] == '"' and not parts[-1]: |
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217 | 217 | return _parse_quote, parts, offset + 1 |
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218 | 218 | elif s[offset:offset + 1] == '"' and parts[-1][-1] == '\\': |
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219 | 219 | parts[-1] = parts[-1][:-1] + s[offset:offset + 1] |
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220 | 220 | return _parse_plain, parts, offset + 1 |
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221 | 221 | parts[-1] += s[offset:offset + 1] |
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222 | 222 | return _parse_plain, parts, offset + 1 |
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223 | 223 | |
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224 | 224 | def _parse_quote(parts, s, offset): |
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225 | 225 | if offset < len(s) and s[offset:offset + 1] == '"': # "" |
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226 | 226 | parts.append('') |
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227 | 227 | offset += 1 |
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228 | 228 | while offset < len(s) and (s[offset:offset + 1].isspace() or |
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229 | 229 | s[offset:offset + 1] == ','): |
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230 | 230 | offset += 1 |
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231 | 231 | return _parse_plain, parts, offset |
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232 | 232 | |
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233 | 233 | while offset < len(s) and s[offset:offset + 1] != '"': |
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234 | 234 | if (s[offset:offset + 1] == '\\' and offset + 1 < len(s) |
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235 | 235 | and s[offset + 1:offset + 2] == '"'): |
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236 | 236 | offset += 1 |
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237 | 237 | parts[-1] += '"' |
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238 | 238 | else: |
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239 | 239 | parts[-1] += s[offset:offset + 1] |
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240 | 240 | offset += 1 |
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241 | 241 | |
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242 | 242 | if offset >= len(s): |
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243 | 243 | real_parts = _configlist(parts[-1]) |
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244 | 244 | if not real_parts: |
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245 | 245 | parts[-1] = '"' |
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246 | 246 | else: |
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247 | 247 | real_parts[0] = '"' + real_parts[0] |
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248 | 248 | parts = parts[:-1] |
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249 | 249 | parts.extend(real_parts) |
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250 | 250 | return None, parts, offset |
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251 | 251 | |
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252 | 252 | offset += 1 |
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253 | 253 | while offset < len(s) and s[offset:offset + 1] in [' ', ',']: |
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254 | 254 | offset += 1 |
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255 | 255 | |
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256 | 256 | if offset < len(s): |
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257 | 257 | if offset + 1 == len(s) and s[offset:offset + 1] == '"': |
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258 | 258 | parts[-1] += '"' |
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259 | 259 | offset += 1 |
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260 | 260 | else: |
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261 | 261 | parts.append('') |
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262 | 262 | else: |
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263 | 263 | return None, parts, offset |
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264 | 264 | |
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265 | 265 | return _parse_plain, parts, offset |
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266 | 266 | |
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267 | 267 | def _configlist(s): |
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268 | 268 | s = s.rstrip(' ,') |
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269 | 269 | if not s: |
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270 | 270 | return [] |
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271 | 271 | parser, parts, offset = _parse_plain, [''], 0 |
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272 | 272 | while parser: |
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273 | 273 | parser, parts, offset = parser(parts, s, offset) |
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274 | 274 | return parts |
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275 | 275 | |
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276 | 276 | if value is not None and isinstance(value, bytes): |
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277 | 277 | result = _configlist(value.lstrip(' ,\n')) |
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278 | 278 | else: |
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279 | 279 | result = value |
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280 | 280 | return result or [] |
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