Mercurial > hg
annotate hgext/fastannotate/commands.py @ 51239:7eea2e4109ae
rust-index: using the `hg::index::Index` in ancestors iterator and lazy set
Since there is no Rust implementation for REVLOGV2/CHANGELOGv2, we declare
them to be incompatible with Rust, hence indexes in these formats will use
the implementations from Python `mercurial.ancestor`. If this is an unacceptable
performance hit for current users of these formats, we can later on add Rust
implementations based on the C index for them or implement these formats for
the Rust indexes.
Among the challenges that we had to meet, we wanted to avoid taking the GIL each
time the inner (vcsgraph) iterator has to call the parents function. This would probably
still be acceptable in terms of performance with `AncestorsIterator`, but not with
`LazyAncestors` nor for the upcoming change in `MissingAncestors`.
Hence we enclose the reference to the index in a `PySharedRef`, leading to more
rigourous checking of mutations, which does pass now that there no logically immutable
methods of `hg::index::Index` that take a mutable reference as input.
author | Georges Racinet <georges.racinet@octobus.net> |
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date | Fri, 27 Oct 2023 22:11:05 +0200 |
parents | d718eddf01d9 |
children | 45d5e9a0f6a6 |
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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 ) |
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23 |
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24 from . import ( |
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25 context as facontext, |
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26 error as faerror, |
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27 formatter as faformatter, |
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28 ) |
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29 |
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30 cmdtable = {} |
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31 command = registrar.command(cmdtable) |
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32 |
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33 |
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34 def _matchpaths(repo, rev, pats, opts, aopts=facontext.defaultopts): |
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35 """generate paths matching given patterns""" |
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36 perfhack = repo.ui.configbool(b'fastannotate', b'perfhack') |
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37 |
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38 # disable perfhack if: |
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39 # a) any walkopt is used |
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40 # b) if we treat pats as plain file names, some of them do not have |
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41 # corresponding linelog files |
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42 if perfhack: |
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43 # cwd related to reporoot |
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44 reporoot = os.path.dirname(repo.path) |
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45 reldir = os.path.relpath(encoding.getcwd(), reporoot) |
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46 if reldir == b'.': |
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47 reldir = b'' |
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48 if any(opts.get(o[1]) for o in commands.walkopts): # a) |
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49 perfhack = False |
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50 else: # b) |
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51 relpats = [ |
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52 os.path.relpath(p, reporoot) if os.path.isabs(p) else p |
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53 for p in pats |
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54 ] |
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55 # disable perfhack on '..' since it allows escaping from the repo |
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56 if any( |
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57 ( |
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58 b'..' in f |
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59 or not os.path.isfile( |
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60 facontext.pathhelper(repo, f, aopts).linelogpath |
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61 ) |
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62 ) |
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63 for f in relpats |
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64 ): |
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65 perfhack = False |
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66 |
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67 # perfhack: emit paths directory without checking with manifest |
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68 # this can be incorrect if the rev dos not have file. |
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69 if perfhack: |
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70 for p in relpats: |
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71 yield os.path.join(reldir, p) |
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72 else: |
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73 |
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74 def bad(x, y): |
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75 raise error.Abort(b"%s: %s" % (x, y)) |
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76 |
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77 ctx = logcmdutil.revsingle(repo, rev) |
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78 m = scmutil.match(ctx, pats, opts, badfn=bad) |
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79 for p in ctx.walk(m): |
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80 yield p |
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81 |
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82 |
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83 fastannotatecommandargs = { |
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84 'options': [ |
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85 (b'r', b'rev', b'.', _(b'annotate the specified revision'), _(b'REV')), |
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86 (b'u', b'user', None, _(b'list the author (long with -v)')), |
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87 (b'f', b'file', None, _(b'list the filename')), |
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88 (b'd', b'date', None, _(b'list the date (short with -q)')), |
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89 (b'n', b'number', None, _(b'list the revision number (default)')), |
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90 (b'c', b'changeset', None, _(b'list the changeset')), |
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91 ( |
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92 b'l', |
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93 b'line-number', |
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94 None, |
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95 _(b'show line number at the first appearance'), |
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96 ), |
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97 ( |
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98 b'e', |
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99 b'deleted', |
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100 None, |
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101 _(b'show deleted lines (slow) (EXPERIMENTAL)'), |
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102 ), |
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103 ( |
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104 b'', |
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105 b'no-content', |
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106 None, |
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107 _(b'do not show file content (EXPERIMENTAL)'), |
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108 ), |
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109 (b'', b'no-follow', None, _(b"don't follow copies and renames")), |
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110 ( |
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111 b'', |
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112 b'linear', |
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113 None, |
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114 _( |
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115 b'enforce linear history, ignore second parent ' |
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116 b'of merges (EXPERIMENTAL)' |
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117 ), |
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118 ), |
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119 ( |
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120 b'', |
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121 b'long-hash', |
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122 None, |
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123 _(b'show long changeset hash (EXPERIMENTAL)'), |
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124 ), |
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125 ( |
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126 b'', |
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127 b'rebuild', |
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128 None, |
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129 _(b'rebuild cache even if it exists (EXPERIMENTAL)'), |
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130 ), |
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131 ] |
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132 + commands.diffwsopts |
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133 + commands.walkopts |
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134 + commands.formatteropts, |
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135 'synopsis': _(b'[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'), |
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136 'inferrepo': True, |
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137 } |
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138 |
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139 |
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140 def fastannotate(ui, repo, *pats, **opts): |
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141 """show changeset information by line for each file |
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142 |
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143 List changes in files, showing the revision id responsible for each line. |
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144 |
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145 This command is useful for discovering when a change was made and by whom. |
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146 |
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147 By default this command prints revision numbers. If you include --file, |
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148 --user, or --date, the revision number is suppressed unless you also |
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149 include --number. The default format can also be customized by setting |
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150 fastannotate.defaultformat. |
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151 |
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152 Returns 0 on success. |
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153 |
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154 .. container:: verbose |
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155 |
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156 This command uses an implementation different from the vanilla annotate |
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157 command, which may produce slightly different (while still reasonable) |
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158 outputs for some cases. |
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159 |
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160 Unlike the vanilla anootate, fastannotate follows rename regardless of |
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161 the existence of --file. |
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162 |
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163 For the best performance when running on a full repo, use -c, -l, |
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164 avoid -u, -d, -n. Use --linear and --no-content to make it even faster. |
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165 |
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166 For the best performance when running on a shallow (remotefilelog) |
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167 repo, avoid --linear, --no-follow, or any diff options. As the server |
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168 won't be able to populate annotate cache when non-default options |
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169 affecting results are used. |
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170 """ |
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171 if not pats: |
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172 raise error.Abort(_(b'at least one filename or pattern is required')) |
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173 |
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174 # performance hack: filtered repo can be slow. unfilter by default. |
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175 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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176 repo = repo.unfiltered() |
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177 |
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178 opts = pycompat.byteskwargs(opts) |
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179 |
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180 rev = opts.get(b'rev', b'.') |
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181 rebuild = opts.get(b'rebuild', False) |
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182 |
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183 diffopts = patch.difffeatureopts( |
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184 ui, opts, section=b'annotate', whitespace=True |
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185 ) |
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186 aopts = facontext.annotateopts( |
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187 diffopts=diffopts, |
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188 followmerge=not opts.get(b'linear', False), |
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189 followrename=not opts.get(b'no_follow', False), |
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190 ) |
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191 |
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192 if not any( |
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193 opts.get(s) |
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194 for s in [b'user', b'date', b'file', b'number', b'changeset'] |
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195 ): |
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196 # default 'number' for compatibility. but fastannotate is more |
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197 # efficient with "changeset", "line-number" and "no-content". |
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198 for name in ui.configlist( |
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199 b'fastannotate', b'defaultformat', [b'number'] |
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200 ): |
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201 opts[name] = True |
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202 |
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203 ui.pager(b'fastannotate') |
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204 template = opts.get(b'template') |
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205 if template == b'json': |
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206 formatter = faformatter.jsonformatter(ui, repo, opts) |
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207 else: |
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208 formatter = faformatter.defaultformatter(ui, repo, opts) |
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209 showdeleted = opts.get(b'deleted', False) |
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210 showlines = not bool(opts.get(b'no_content')) |
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211 showpath = opts.get(b'file', False) |
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212 |
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213 # find the head of the main (master) branch |
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214 master = ui.config(b'fastannotate', b'mainbranch') or rev |
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215 |
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216 # paths will be used for prefetching and the real annotating |
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217 paths = list(_matchpaths(repo, rev, pats, opts, aopts)) |
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218 |
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219 # for client, prefetch from the server |
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220 if hasattr(repo, 'prefetchfastannotate'): |
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221 repo.prefetchfastannotate(paths) |
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222 |
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223 for path in paths: |
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224 result = lines = existinglines = None |
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225 while True: |
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226 try: |
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227 with facontext.annotatecontext(repo, path, aopts, rebuild) as a: |
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228 result = a.annotate( |
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229 rev, |
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230 master=master, |
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231 showpath=showpath, |
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232 showlines=(showlines and not showdeleted), |
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233 ) |
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234 if showdeleted: |
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235 existinglines = {(l[0], l[1]) for l in result} |
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236 result = a.annotatealllines( |
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237 rev, showpath=showpath, showlines=showlines |
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238 ) |
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239 break |
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240 except (faerror.CannotReuseError, faerror.CorruptedFileError): |
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241 # happens if master moves backwards, or the file was deleted |
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242 # and readded, or renamed to an existing name, or corrupted. |
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243 if rebuild: # give up since we have tried rebuild already |
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244 raise |
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245 else: # try a second time rebuilding the cache (slow) |
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246 rebuild = True |
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247 continue |
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248 |
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249 if showlines: |
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250 result, lines = result |
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251 |
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252 formatter.write(result, lines, existinglines=existinglines) |
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253 formatter.end() |
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254 |
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255 |
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256 _newopts = set() |
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257 _knownopts = { |
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258 opt[1].replace(b'-', b'_') |
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259 for opt in (fastannotatecommandargs['options'] + commands.globalopts) |
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260 } |
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261 |
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262 |
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263 def _annotatewrapper(orig, ui, repo, *pats, **opts): |
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264 """used by wrapdefault""" |
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265 # we need this hack until the obsstore has 0.0 seconds perf impact |
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266 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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267 repo = repo.unfiltered() |
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268 |
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269 # treat the file as text (skip the isbinary check) |
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270 if ui.configbool(b'fastannotate', b'forcetext'): |
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271 opts['text'] = True |
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272 |
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273 # check if we need to do prefetch (client-side) |
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274 rev = opts.get('rev') |
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275 if hasattr(repo, 'prefetchfastannotate') and rev is not None: |
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276 paths = list(_matchpaths(repo, rev, pats, pycompat.byteskwargs(opts))) |
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277 repo.prefetchfastannotate(paths) |
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278 |
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279 return orig(ui, repo, *pats, **opts) |
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280 |
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281 |
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282 def registercommand(): |
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283 """register the fastannotate command""" |
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284 name = b'fastannotate|fastblame|fa' |
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285 command(name, helpbasic=True, **fastannotatecommandargs)(fastannotate) |
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286 |
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287 |
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288 def wrapdefault(): |
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289 """wrap the default annotate command, to be aware of the protocol""" |
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290 extensions.wrapcommand(commands.table, b'annotate', _annotatewrapper) |
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291 |
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292 |
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293 @command( |
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294 b'debugbuildannotatecache', |
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295 [(b'r', b'rev', b'', _(b'build up to the specific revision'), _(b'REV'))] |
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296 + commands.walkopts, |
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297 _(b'[-r REV] FILE...'), |
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298 ) |
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299 def debugbuildannotatecache(ui, repo, *pats, **opts): |
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300 """incrementally build fastannotate cache up to REV for specified files |
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301 |
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302 If REV is not specified, use the config 'fastannotate.mainbranch'. |
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303 |
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304 If fastannotate.client is True, download the annotate cache from the |
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305 server. Otherwise, build the annotate cache locally. |
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306 |
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307 The annotate cache will be built using the default diff and follow |
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308 options and lives in '.hg/fastannotate/default'. |
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309 """ |
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310 opts = pycompat.byteskwargs(opts) |
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311 rev = opts.get(b'REV') or ui.config(b'fastannotate', b'mainbranch') |
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312 if not rev: |
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313 raise error.Abort( |
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314 _(b'you need to provide a revision'), |
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315 hint=_(b'set fastannotate.mainbranch or use --rev'), |
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316 ) |
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317 if ui.configbool(b'fastannotate', b'unfilteredrepo'): |
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318 repo = repo.unfiltered() |
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319 ctx = logcmdutil.revsingle(repo, rev) |
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320 m = scmutil.match(ctx, pats, opts) |
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321 paths = list(ctx.walk(m)) |
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322 if hasattr(repo, 'prefetchfastannotate'): |
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323 # client |
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324 if opts.get(b'REV'): |
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325 raise error.Abort(_(b'--rev cannot be used for client')) |
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326 repo.prefetchfastannotate(paths) |
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327 else: |
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328 # server, or full repo |
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329 progress = ui.makeprogress(_(b'building'), total=len(paths)) |
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330 for i, path in enumerate(paths): |
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331 progress.update(i) |
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332 with facontext.annotatecontext(repo, path) as actx: |
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333 try: |
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334 if actx.isuptodate(rev): |
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335 continue |
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336 actx.annotate(rev, rev) |
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337 except (faerror.CannotReuseError, faerror.CorruptedFileError): |
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338 # the cache is broken (could happen with renaming so the |
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339 # file history gets invalidated). rebuild and try again. |
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340 ui.debug( |
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341 b'fastannotate: %s: rebuilding broken cache\n' % path |
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342 ) |
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343 actx.rebuild() |
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344 try: |
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345 actx.annotate(rev, rev) |
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346 except Exception as ex: |
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347 # possibly a bug, but should not stop us from building |
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348 # cache for other files. |
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349 ui.warn( |
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350 _( |
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351 b'fastannotate: %s: failed to ' |
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
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352 b'build cache: %r\n' |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42057
diff
changeset
|
353 ) |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42057
diff
changeset
|
354 % (path, ex) |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42057
diff
changeset
|
355 ) |
40838
901f6ef670ca
debugbuildannotatecache: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents:
40295
diff
changeset
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356 progress.complete() |