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@@ -1,198 +1,198 b'' | |||
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1 | 1 | # narrowspec.py - methods for working with a narrow view of a repository |
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2 | 2 | # |
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3 | 3 | # Copyright 2017 Google, Inc. |
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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 | |
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12 | 12 | from .i18n import _ |
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13 | 13 | from . import ( |
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14 | 14 | error, |
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15 | 15 | match as matchmod, |
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16 | 16 | repository, |
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17 | 17 | sparse, |
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18 | 18 | util, |
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19 | 19 | ) |
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20 | 20 | |
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21 | 21 | FILENAME = 'narrowspec' |
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22 | 22 | |
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23 | 23 | def parseserverpatterns(text): |
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24 | 24 | """Parses the narrowspec format that's returned by the server.""" |
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25 | 25 | includepats = set() |
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26 | 26 | excludepats = set() |
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27 | 27 | |
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28 | 28 | # We get one entry per line, in the format "<key> <value>". |
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29 | 29 | # It's OK for value to contain other spaces. |
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30 | 30 | for kp in (l.split(' ', 1) for l in text.splitlines()): |
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31 | 31 | if len(kp) != 2: |
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32 | 32 | raise error.Abort(_('Invalid narrowspec pattern line: "%s"') % kp) |
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33 | 33 | key = kp[0] |
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34 | 34 | pat = kp[1] |
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35 | 35 | if key == 'include': |
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36 | 36 | includepats.add(pat) |
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37 | 37 | elif key == 'exclude': |
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38 | 38 | excludepats.add(pat) |
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39 | 39 | else: |
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40 | 40 | raise error.Abort(_('Invalid key "%s" in server response') % key) |
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41 | 41 | |
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42 | 42 | return includepats, excludepats |
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43 | 43 | |
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44 | 44 | def normalizesplitpattern(kind, pat): |
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45 | 45 | """Returns the normalized version of a pattern and kind. |
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46 | 46 | |
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47 | 47 | Returns a tuple with the normalized kind and normalized pattern. |
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48 | 48 | """ |
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49 | 49 | pat = pat.rstrip('/') |
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50 | 50 | _validatepattern(pat) |
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51 | 51 | return kind, pat |
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52 | 52 | |
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53 | 53 | def _numlines(s): |
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54 | 54 | """Returns the number of lines in s, including ending empty lines.""" |
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55 | 55 | # We use splitlines because it is Unicode-friendly and thus Python 3 |
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56 | 56 | # compatible. However, it does not count empty lines at the end, so trick |
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57 | 57 | # it by adding a character at the end. |
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58 | 58 | return len((s + 'x').splitlines()) |
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59 | 59 | |
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60 | 60 | def _validatepattern(pat): |
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61 | 61 | """Validates the pattern and aborts if it is invalid. |
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62 | 62 | |
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63 | 63 | Patterns are stored in the narrowspec as newline-separated |
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64 | 64 | POSIX-style bytestring paths. There's no escaping. |
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65 | 65 | """ |
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66 | 66 | |
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67 | 67 | # We use newlines as separators in the narrowspec file, so don't allow them |
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68 | 68 | # in patterns. |
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69 | 69 | if _numlines(pat) > 1: |
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70 | 70 | raise error.Abort(_('newlines are not allowed in narrowspec paths')) |
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71 | 71 | |
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72 | 72 | components = pat.split('/') |
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73 | 73 | if '.' in components or '..' in components: |
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74 | 74 | raise error.Abort(_('"." and ".." are not allowed in narrowspec paths')) |
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75 | 75 | |
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76 | 76 | def normalizepattern(pattern, defaultkind='path'): |
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77 | 77 | """Returns the normalized version of a text-format pattern. |
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78 | 78 | |
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79 | 79 | If the pattern has no kind, the default will be added. |
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80 | 80 | """ |
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81 | 81 | kind, pat = matchmod._patsplit(pattern, defaultkind) |
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82 | 82 | return '%s:%s' % normalizesplitpattern(kind, pat) |
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83 | 83 | |
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84 | 84 | def parsepatterns(pats): |
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85 | 85 | """Parses a list of patterns into a typed pattern set.""" |
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86 | 86 | return set(normalizepattern(p) for p in pats) |
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87 | 87 | |
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88 | 88 | def format(includes, excludes): |
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89 | 89 | output = '[include]\n' |
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90 | 90 | for i in sorted(includes - excludes): |
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91 | 91 | output += i + '\n' |
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92 | 92 | output += '[exclude]\n' |
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93 | 93 | for e in sorted(excludes): |
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94 | 94 | output += e + '\n' |
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95 | 95 | return output |
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96 | 96 | |
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97 | 97 | def match(root, include=None, exclude=None): |
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98 | 98 | if not include: |
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99 | 99 | # Passing empty include and empty exclude to matchmod.match() |
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100 | 100 | # gives a matcher that matches everything, so explicitly use |
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101 | 101 | # the nevermatcher. |
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102 | 102 | return matchmod.never(root, '') |
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103 | 103 | return matchmod.match(root, '', [], include=include or [], |
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104 | 104 | exclude=exclude or []) |
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105 | 105 | |
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106 | 106 | def needsexpansion(includes): |
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107 | 107 | return [i for i in includes if i.startswith('include:')] |
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108 | 108 | |
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109 | 109 | def load(repo): |
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110 | 110 | try: |
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111 | 111 | spec = repo.vfs.read(FILENAME) |
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112 | 112 | except IOError as e: |
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113 | 113 | # Treat "narrowspec does not exist" the same as "narrowspec file exists |
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114 | 114 | # and is empty". |
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115 | 115 | if e.errno == errno.ENOENT: |
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116 | 116 | return set(), set() |
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117 | 117 | raise |
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118 | 118 | # maybe we should care about the profiles returned too |
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119 | 119 | includepats, excludepats, profiles = sparse.parseconfig(repo.ui, spec, |
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120 | 120 | 'narrow') |
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121 | 121 | if profiles: |
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122 | 122 | raise error.Abort(_("including other spec files using '%include' is not" |
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123 | 123 | " suported in narrowspec")) |
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124 | 124 | return includepats, excludepats |
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125 | 125 | |
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126 | 126 | def save(repo, includepats, excludepats): |
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127 | 127 | spec = format(includepats, excludepats) |
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128 | 128 | repo.vfs.write(FILENAME, spec) |
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129 | 129 | |
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130 | 130 | def savebackup(repo, backupname): |
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131 | 131 | if repository.NARROW_REQUIREMENT not in repo.requirements: |
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132 | 132 | return |
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133 | 133 | vfs = repo.vfs |
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134 | 134 | vfs.tryunlink(backupname) |
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135 | 135 | util.copyfile(vfs.join(FILENAME), vfs.join(backupname), hardlink=True) |
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136 | 136 | |
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137 | 137 | def restorebackup(repo, backupname): |
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138 | 138 | if repository.NARROW_REQUIREMENT not in repo.requirements: |
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139 | 139 | return |
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140 |
repo.vfs.rename(backupname, FILENAME |
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140 | repo.vfs.rename(backupname, FILENAME) | |
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141 | 141 | |
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142 | 142 | def clearbackup(repo, backupname): |
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143 | 143 | if repository.NARROW_REQUIREMENT not in repo.requirements: |
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144 | 144 | return |
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145 | 145 | repo.vfs.unlink(backupname) |
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146 | 146 | |
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147 | 147 | def restrictpatterns(req_includes, req_excludes, repo_includes, repo_excludes): |
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148 | 148 | r""" Restricts the patterns according to repo settings, |
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149 | 149 | results in a logical AND operation |
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150 | 150 | |
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151 | 151 | :param req_includes: requested includes |
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152 | 152 | :param req_excludes: requested excludes |
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153 | 153 | :param repo_includes: repo includes |
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154 | 154 | :param repo_excludes: repo excludes |
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155 | 155 | :return: include patterns, exclude patterns, and invalid include patterns. |
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156 | 156 | |
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157 | 157 | >>> restrictpatterns({'f1','f2'}, {}, ['f1'], []) |
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158 | 158 | (set(['f1']), {}, []) |
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159 | 159 | >>> restrictpatterns({'f1'}, {}, ['f1','f2'], []) |
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160 | 160 | (set(['f1']), {}, []) |
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161 | 161 | >>> restrictpatterns({'f1/fc1', 'f3/fc3'}, {}, ['f1','f2'], []) |
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162 | 162 | (set(['f1/fc1']), {}, []) |
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163 | 163 | >>> restrictpatterns({'f1_fc1'}, {}, ['f1','f2'], []) |
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164 | 164 | ([], set(['path:.']), []) |
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165 | 165 | >>> restrictpatterns({'f1/../f2/fc2'}, {}, ['f1','f2'], []) |
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166 | 166 | (set(['f2/fc2']), {}, []) |
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167 | 167 | >>> restrictpatterns({'f1/../f3/fc3'}, {}, ['f1','f2'], []) |
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168 | 168 | ([], set(['path:.']), []) |
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169 | 169 | >>> restrictpatterns({'f1/$non_exitent_var'}, {}, ['f1','f2'], []) |
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170 | 170 | (set(['f1/$non_exitent_var']), {}, []) |
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171 | 171 | """ |
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172 | 172 | res_excludes = set(req_excludes) |
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173 | 173 | res_excludes.update(repo_excludes) |
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174 | 174 | invalid_includes = [] |
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175 | 175 | if not req_includes: |
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176 | 176 | res_includes = set(repo_includes) |
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177 | 177 | elif 'path:.' not in repo_includes: |
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178 | 178 | res_includes = [] |
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179 | 179 | for req_include in req_includes: |
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180 | 180 | req_include = util.expandpath(util.normpath(req_include)) |
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181 | 181 | if req_include in repo_includes: |
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182 | 182 | res_includes.append(req_include) |
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183 | 183 | continue |
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184 | 184 | valid = False |
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185 | 185 | for repo_include in repo_includes: |
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186 | 186 | if req_include.startswith(repo_include + '/'): |
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187 | 187 | valid = True |
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188 | 188 | res_includes.append(req_include) |
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189 | 189 | break |
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190 | 190 | if not valid: |
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191 | 191 | invalid_includes.append(req_include) |
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192 | 192 | if len(res_includes) == 0: |
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193 | 193 | res_excludes = {'path:.'} |
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194 | 194 | else: |
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195 | 195 | res_includes = set(res_includes) |
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196 | 196 | else: |
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197 | 197 | res_includes = set(req_includes) |
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198 | 198 | return res_includes, res_excludes, invalid_includes |
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