Mercurial > hg
annotate mercurial/sparse.py @ 33304:3e1accab7447
sparse: move some temporary includes functions into core
Functions for reading and writing the tempsparse file have been
moved. prunetemporaryincludes() will be moved separately
because it is non-trivial.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Thu, 06 Jul 2017 14:48:16 -0700 |
parents | 8b571495d811 |
children | df1287268cc0 |
rev | line source |
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1 # sparse.py - functionality for sparse checkouts |
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2 # |
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3 # Copyright 2014 Facebook, Inc. |
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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 __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from .node import nullid |
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12 from . import ( |
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13 error, |
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14 ) |
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15 |
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16 # Whether sparse features are enabled. This variable is intended to be |
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17 # temporary to facilitate porting sparse to core. It should eventually be |
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18 # a per-repo option, possibly a repo requirement. |
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19 enabled = False |
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20 |
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21 def parseconfig(ui, raw): |
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22 """Parse sparse config file content. |
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23 |
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24 Returns a tuple of includes, excludes, and profiles. |
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25 """ |
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26 includes = set() |
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27 excludes = set() |
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28 current = includes |
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29 profiles = [] |
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30 for line in raw.split('\n'): |
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31 line = line.strip() |
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32 if not line or line.startswith('#'): |
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33 # empty or comment line, skip |
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34 continue |
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35 elif line.startswith('%include '): |
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36 line = line[9:].strip() |
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37 if line: |
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38 profiles.append(line) |
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39 elif line == '[include]': |
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40 if current != includes: |
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41 # TODO pass filename into this API so we can report it. |
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42 raise error.Abort(_('sparse config cannot have includes ' + |
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43 'after excludes')) |
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44 continue |
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45 elif line == '[exclude]': |
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46 current = excludes |
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47 elif line: |
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48 if line.strip().startswith('/'): |
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49 ui.warn(_('warning: sparse profile cannot use' + |
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50 ' paths starting with /, ignoring %s\n') % line) |
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51 continue |
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52 current.add(line) |
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53 |
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54 return includes, excludes, profiles |
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55 |
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56 # Exists as separate function to facilitate monkeypatching. |
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57 def readprofile(repo, profile, changeid): |
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58 """Resolve the raw content of a sparse profile file.""" |
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59 # TODO add some kind of cache here because this incurs a manifest |
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60 # resolve and can be slow. |
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61 return repo.filectx(profile, changeid=changeid).data() |
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62 |
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63 def patternsforrev(repo, rev): |
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64 """Obtain sparse checkout patterns for the given rev. |
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65 |
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66 Returns a tuple of iterables representing includes, excludes, and |
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67 patterns. |
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68 """ |
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69 # Feature isn't enabled. No-op. |
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70 if not enabled: |
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71 return set(), set(), [] |
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72 |
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73 raw = repo.vfs.tryread('sparse') |
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74 if not raw: |
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75 return set(), set(), [] |
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76 |
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77 if rev is None: |
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78 raise error.Abort(_('cannot parse sparse patterns from working ' |
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79 'directory')) |
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80 |
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81 includes, excludes, profiles = parseconfig(repo.ui, raw) |
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82 ctx = repo[rev] |
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83 |
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84 if profiles: |
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85 visited = set() |
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86 while profiles: |
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87 profile = profiles.pop() |
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88 if profile in visited: |
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89 continue |
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90 |
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91 visited.add(profile) |
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92 |
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93 try: |
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94 raw = readprofile(repo, profile, rev) |
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95 except error.ManifestLookupError: |
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96 msg = ( |
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97 "warning: sparse profile '%s' not found " |
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98 "in rev %s - ignoring it\n" % (profile, ctx)) |
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99 # experimental config: sparse.missingwarning |
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100 if repo.ui.configbool( |
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101 'sparse', 'missingwarning', True): |
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102 repo.ui.warn(msg) |
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103 else: |
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104 repo.ui.debug(msg) |
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105 continue |
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106 |
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107 pincludes, pexcludes, subprofs = parseconfig(repo.ui, raw) |
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108 includes.update(pincludes) |
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109 excludes.update(pexcludes) |
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110 for subprofile in subprofs: |
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111 profiles.append(subprofile) |
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112 |
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113 profiles = visited |
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114 |
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115 if includes: |
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116 includes.add('.hg*') |
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117 |
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118 return includes, excludes, profiles |
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119 |
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120 def activeprofiles(repo): |
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121 revs = [repo.changelog.rev(node) for node in |
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122 repo.dirstate.parents() if node != nullid] |
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123 |
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124 profiles = set() |
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125 for rev in revs: |
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126 profiles.update(patternsforrev(repo, rev)[2]) |
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127 |
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128 return profiles |
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129 |
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130 def invalidatesignaturecache(repo): |
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131 repo._sparsesignaturecache.clear() |
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132 |
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133 def writeconfig(repo, includes, excludes, profiles): |
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134 """Write the sparse config file given a sparse configuration.""" |
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135 with repo.vfs('sparse', 'wb') as fh: |
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136 for p in sorted(profiles): |
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137 fh.write('%%include %s\n' % p) |
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138 |
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139 if includes: |
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140 fh.write('[include]\n') |
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141 for i in sorted(includes): |
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142 fh.write(i) |
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143 fh.write('\n') |
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144 |
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145 if excludes: |
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146 fh.write('[exclude]\n') |
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147 for e in sorted(excludes): |
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148 fh.write(e) |
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149 fh.write('\n') |
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150 |
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151 invalidatesignaturecache(repo) |
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152 |
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153 def readtemporaryincludes(repo): |
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154 raw = repo.vfs.tryread('tempsparse') |
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155 if not raw: |
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156 return set() |
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157 |
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158 return set(raw.split('\n')) |
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159 |
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160 def writetemporaryincludes(repo, includes): |
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161 repo.vfs.write('tempsparse', '\n'.join(sorted(includes))) |
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162 invalidatesignaturecache(repo) |
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163 |
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164 def addtemporaryincludes(repo, additional): |
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165 includes = readtemporaryincludes(repo) |
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166 for i in additional: |
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167 includes.add(i) |
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168 writetemporaryincludes(repo, includes) |