Mercurial > hg
annotate hgext/fastannotate/commands.py @ 50225:53ca3e3bc013 stable
rhg: fix race when a fixup file is deleted on disk
See next changeset for the other race in the same kind of logic and why
there are two different places.
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Mon, 27 Feb 2023 15:18:50 +0100 |
parents | 6000f5b25c9b |
children | d718eddf01d9 |
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1 # Copyright 2016-present Facebook. All Rights Reserved. |
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2 # |
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3 # commands: fastannotate commands |
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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 |
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9 import os |
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10 |
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11 from mercurial.i18n import _ |
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12 from mercurial import ( |
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13 commands, |
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14 encoding, |
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15 error, |
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16 extensions, |
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17 logcmdutil, |
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18 patch, |
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19 pycompat, |
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20 registrar, |
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21 scmutil, |
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22 util, |
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23 ) |
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24 |
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25 from . import ( |
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26 context as facontext, |
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27 error as faerror, |
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28 formatter as faformatter, |
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29 ) |
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30 |
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31 cmdtable = {} |
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32 command = registrar.command(cmdtable) |
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33 |
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34 |
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35 def _matchpaths(repo, rev, pats, opts, aopts=facontext.defaultopts): |
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36 """generate paths matching given patterns""" |
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37 perfhack = repo.ui.configbool(b'fastannotate', b'perfhack') |
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38 |
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39 # disable perfhack if: |
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40 # a) any walkopt is used |
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41 # b) if we treat pats as plain file names, some of them do not have |
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42 # corresponding linelog files |
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43 if perfhack: |
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44 # cwd related to reporoot |
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45 reporoot = os.path.dirname(repo.path) |
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46 reldir = os.path.relpath(encoding.getcwd(), reporoot) |
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47 if reldir == b'.': |
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48 reldir = b'' |
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49 if any(opts.get(o[1]) for o in commands.walkopts): # a) |
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50 perfhack = False |
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51 else: # b) |
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52 relpats = [ |
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53 os.path.relpath(p, reporoot) if os.path.isabs(p) else p |
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54 for p in pats |
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55 ] |
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56 # disable perfhack on '..' since it allows escaping from the repo |
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57 if any( |
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58 ( |
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59 b'..' in f |
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60 or not os.path.isfile( |
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61 facontext.pathhelper(repo, f, aopts).linelogpath |
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62 ) |
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63 ) |
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64 for f in relpats |
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65 ): |
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66 perfhack = False |
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67 |
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68 # perfhack: emit paths directory without checking with manifest |
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69 # this can be incorrect if the rev dos not have file. |
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70 if perfhack: |
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71 for p in relpats: |
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72 yield os.path.join(reldir, p) |
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73 else: |
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74 |
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75 def bad(x, y): |
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76 raise error.Abort(b"%s: %s" % (x, y)) |
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77 |
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78 ctx = logcmdutil.revsingle(repo, rev) |
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79 m = scmutil.match(ctx, pats, opts, badfn=bad) |
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80 for p in ctx.walk(m): |
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81 yield p |
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82 |
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83 |
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84 fastannotatecommandargs = { |
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85 'options': [ |
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86 (b'r', b'rev', b'.', _(b'annotate the specified revision'), _(b'REV')), |
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87 (b'u', b'user', None, _(b'list the author (long with -v)')), |
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88 (b'f', b'file', None, _(b'list the filename')), |
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89 (b'd', b'date', None, _(b'list the date (short with -q)')), |
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90 (b'n', b'number', None, _(b'list the revision number (default)')), |
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91 (b'c', b'changeset', None, _(b'list the changeset')), |
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92 ( |
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93 b'l', |
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94 b'line-number', |
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95 None, |
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96 _(b'show line number at the first appearance'), |
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97 ), |
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98 ( |
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99 b'e', |
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100 b'deleted', |
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101 None, |
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102 _(b'show deleted lines (slow) (EXPERIMENTAL)'), |
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103 ), |
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104 ( |
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105 b'', |
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106 b'no-content', |
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107 None, |
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108 _(b'do not show file content (EXPERIMENTAL)'), |
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109 ), |
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110 (b'', b'no-follow', None, _(b"don't follow copies and renames")), |
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111 ( |
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112 b'', |
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113 b'linear', |
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114 None, |
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115 _( |
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116 b'enforce linear history, ignore second parent ' |
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117 b'of merges (EXPERIMENTAL)' |
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118 ), |
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119 ), |
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120 ( |
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121 b'', |
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122 b'long-hash', |
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123 None, |
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124 _(b'show long changeset hash (EXPERIMENTAL)'), |
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125 ), |
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126 ( |
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127 b'', |
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128 b'rebuild', |
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129 None, |
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130 _(b'rebuild cache even if it exists (EXPERIMENTAL)'), |
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131 ), |
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132 ] |
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133 + commands.diffwsopts |
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134 + commands.walkopts |
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135 + commands.formatteropts, |
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136 'synopsis': _(b'[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'), |
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137 'inferrepo': True, |
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138 } |
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139 |
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140 |
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141 def fastannotate(ui, repo, *pats, **opts): |
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142 """show changeset information by line for each file |
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143 |
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144 List changes in files, showing the revision id responsible for each line. |
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145 |
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146 This command is useful for discovering when a change was made and by whom. |
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147 |
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148 By default this command prints revision numbers. If you include --file, |
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149 --user, or --date, the revision number is suppressed unless you also |
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150 include --number. The default format can also be customized by setting |
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151 fastannotate.defaultformat. |
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152 |
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153 Returns 0 on success. |
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154 |
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155 .. container:: verbose |
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156 |
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157 This command uses an implementation different from the vanilla annotate |
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158 command, which may produce slightly different (while still reasonable) |
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159 outputs for some cases. |
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160 |
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161 Unlike the vanilla anootate, fastannotate follows rename regardless of |
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162 the existence of --file. |
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163 |
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164 For the best performance when running on a full repo, use -c, -l, |
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165 avoid -u, -d, -n. Use --linear and --no-content to make it even faster. |
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166 |
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167 For the best performance when running on a shallow (remotefilelog) |
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168 repo, avoid --linear, --no-follow, or any diff options. As the server |
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169 won't be able to populate annotate cache when non-default options |
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170 affecting results are used. |
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171 """ |
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172 if not pats: |
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173 raise error.Abort(_(b'at least one filename or pattern is required')) |
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174 |
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175 # performance hack: filtered repo can be slow. unfilter by default. |
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176 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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177 repo = repo.unfiltered() |
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178 |
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179 opts = pycompat.byteskwargs(opts) |
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180 |
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181 rev = opts.get(b'rev', b'.') |
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182 rebuild = opts.get(b'rebuild', False) |
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183 |
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184 diffopts = patch.difffeatureopts( |
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185 ui, opts, section=b'annotate', whitespace=True |
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186 ) |
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187 aopts = facontext.annotateopts( |
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188 diffopts=diffopts, |
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189 followmerge=not opts.get(b'linear', False), |
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190 followrename=not opts.get(b'no_follow', False), |
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191 ) |
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192 |
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193 if not any( |
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194 opts.get(s) |
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195 for s in [b'user', b'date', b'file', b'number', b'changeset'] |
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196 ): |
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197 # default 'number' for compatibility. but fastannotate is more |
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198 # efficient with "changeset", "line-number" and "no-content". |
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199 for name in ui.configlist( |
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200 b'fastannotate', b'defaultformat', [b'number'] |
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201 ): |
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202 opts[name] = True |
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203 |
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204 ui.pager(b'fastannotate') |
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205 template = opts.get(b'template') |
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206 if template == b'json': |
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207 formatter = faformatter.jsonformatter(ui, repo, opts) |
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208 else: |
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209 formatter = faformatter.defaultformatter(ui, repo, opts) |
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210 showdeleted = opts.get(b'deleted', False) |
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211 showlines = not bool(opts.get(b'no_content')) |
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212 showpath = opts.get(b'file', False) |
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213 |
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214 # find the head of the main (master) branch |
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215 master = ui.config(b'fastannotate', b'mainbranch') or rev |
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216 |
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217 # paths will be used for prefetching and the real annotating |
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218 paths = list(_matchpaths(repo, rev, pats, opts, aopts)) |
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219 |
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220 # for client, prefetch from the server |
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221 if util.safehasattr(repo, 'prefetchfastannotate'): |
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222 repo.prefetchfastannotate(paths) |
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223 |
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224 for path in paths: |
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225 result = lines = existinglines = None |
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226 while True: |
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227 try: |
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228 with facontext.annotatecontext(repo, path, aopts, rebuild) as a: |
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229 result = a.annotate( |
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230 rev, |
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231 master=master, |
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232 showpath=showpath, |
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233 showlines=(showlines and not showdeleted), |
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234 ) |
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235 if showdeleted: |
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236 existinglines = {(l[0], l[1]) for l in result} |
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237 result = a.annotatealllines( |
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238 rev, showpath=showpath, showlines=showlines |
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239 ) |
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240 break |
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241 except (faerror.CannotReuseError, faerror.CorruptedFileError): |
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242 # happens if master moves backwards, or the file was deleted |
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243 # and readded, or renamed to an existing name, or corrupted. |
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244 if rebuild: # give up since we have tried rebuild already |
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245 raise |
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246 else: # try a second time rebuilding the cache (slow) |
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247 rebuild = True |
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248 continue |
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249 |
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250 if showlines: |
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251 result, lines = result |
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252 |
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253 formatter.write(result, lines, existinglines=existinglines) |
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254 formatter.end() |
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255 |
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256 |
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257 _newopts = set() |
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258 _knownopts = { |
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259 opt[1].replace(b'-', b'_') |
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260 for opt in (fastannotatecommandargs['options'] + commands.globalopts) |
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261 } |
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262 |
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263 |
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264 def _annotatewrapper(orig, ui, repo, *pats, **opts): |
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265 """used by wrapdefault""" |
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266 # we need this hack until the obsstore has 0.0 seconds perf impact |
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267 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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268 repo = repo.unfiltered() |
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269 |
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270 # treat the file as text (skip the isbinary check) |
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271 if ui.configbool(b'fastannotate', b'forcetext'): |
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272 opts['text'] = True |
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273 |
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274 # check if we need to do prefetch (client-side) |
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275 rev = opts.get('rev') |
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276 if util.safehasattr(repo, 'prefetchfastannotate') and rev is not None: |
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277 paths = list(_matchpaths(repo, rev, pats, pycompat.byteskwargs(opts))) |
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278 repo.prefetchfastannotate(paths) |
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279 |
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280 return orig(ui, repo, *pats, **opts) |
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281 |
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282 |
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283 def registercommand(): |
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284 """register the fastannotate command""" |
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285 name = b'fastannotate|fastblame|fa' |
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286 command(name, helpbasic=True, **fastannotatecommandargs)(fastannotate) |
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287 |
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288 |
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289 def wrapdefault(): |
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290 """wrap the default annotate command, to be aware of the protocol""" |
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291 extensions.wrapcommand(commands.table, b'annotate', _annotatewrapper) |
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292 |
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293 |
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294 @command( |
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295 b'debugbuildannotatecache', |
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296 [(b'r', b'rev', b'', _(b'build up to the specific revision'), _(b'REV'))] |
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297 + commands.walkopts, |
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298 _(b'[-r REV] FILE...'), |
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299 ) |
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300 def debugbuildannotatecache(ui, repo, *pats, **opts): |
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301 """incrementally build fastannotate cache up to REV for specified files |
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302 |
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303 If REV is not specified, use the config 'fastannotate.mainbranch'. |
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304 |
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305 If fastannotate.client is True, download the annotate cache from the |
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306 server. Otherwise, build the annotate cache locally. |
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307 |
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308 The annotate cache will be built using the default diff and follow |
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309 options and lives in '.hg/fastannotate/default'. |
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310 """ |
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311 opts = pycompat.byteskwargs(opts) |
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312 rev = opts.get(b'REV') or ui.config(b'fastannotate', b'mainbranch') |
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313 if not rev: |
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314 raise error.Abort( |
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315 _(b'you need to provide a revision'), |
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316 hint=_(b'set fastannotate.mainbranch or use --rev'), |
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317 ) |
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318 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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319 repo = repo.unfiltered() |
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320 ctx = logcmdutil.revsingle(repo, rev) |
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321 m = scmutil.match(ctx, pats, opts) |
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322 paths = list(ctx.walk(m)) |
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323 if util.safehasattr(repo, 'prefetchfastannotate'): |
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324 # client |
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325 if opts.get(b'REV'): |
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326 raise error.Abort(_(b'--rev cannot be used for client')) |
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327 repo.prefetchfastannotate(paths) |
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328 else: |
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329 # server, or full repo |
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330 progress = ui.makeprogress(_(b'building'), total=len(paths)) |
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331 for i, path in enumerate(paths): |
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332 progress.update(i) |
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333 with facontext.annotatecontext(repo, path) as actx: |
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334 try: |
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335 if actx.isuptodate(rev): |
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336 continue |
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337 actx.annotate(rev, rev) |
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338 except (faerror.CannotReuseError, faerror.CorruptedFileError): |
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339 # the cache is broken (could happen with renaming so the |
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340 # file history gets invalidated). rebuild and try again. |
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341 ui.debug( |
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342 b'fastannotate: %s: rebuilding broken cache\n' % path |
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343 ) |
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344 actx.rebuild() |
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345 try: |
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346 actx.annotate(rev, rev) |
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347 except Exception as ex: |
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348 # possibly a bug, but should not stop us from building |
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349 # cache for other files. |
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350 ui.warn( |
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351 _( |
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352 b'fastannotate: %s: failed to ' |
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353 b'build cache: %r\n' |
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354 ) |
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355 % (path, ex) |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42057
diff
changeset
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356 ) |
40838
901f6ef670ca
debugbuildannotatecache: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents:
40295
diff
changeset
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357 progress.complete() |