Mercurial > public > mercurial-scm > hg-stable

annotate hgext/fastannotate/commands.py @ 48578:28f0092ec89f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
exchange: add fast path for subrepo check on push Try to check if .hgsub and .hgsubstate exist at all before looking for them in every changeset to be pushed. The latter can be quite expensive for large repositories and the existance check is almost free. Differential Revision: https://phab.mercurial-scm.org/D11956
author Joerg Sonnenberger <joerg@bec.de>
date Mon, 03 Jan 2022 01:09:56 +0100
parents 5105a9975407
children 6000f5b25c9b
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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 from __future__ import absolute_import
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9
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10 import os
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11
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12 from mercurial.i18n import _
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13 from mercurial import (
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14 commands,
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15 encoding,
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16 error,
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17 extensions,
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18 logcmdutil,
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19 patch,
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20 pycompat,
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21 registrar,
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22 scmutil,
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23 util,
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24 )
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25
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26 from . import (
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27 context as facontext,
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28 error as faerror,
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29 formatter as faformatter,
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30 )
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31
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32 cmdtable = {}
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33 command = registrar.command(cmdtable)
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34
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35
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36 def _matchpaths(repo, rev, pats, opts, aopts=facontext.defaultopts):
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37 """generate paths matching given patterns"""
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38 perfhack = repo.ui.configbool(b'fastannotate', b'perfhack')
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39
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40 # disable perfhack if:
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41 # a) any walkopt is used
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42 # b) if we treat pats as plain file names, some of them do not have
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43 # corresponding linelog files
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44 if perfhack:
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45 # cwd related to reporoot
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46 reporoot = os.path.dirname(repo.path)
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47 reldir = os.path.relpath(encoding.getcwd(), reporoot)
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48 if reldir == b'.':
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49 reldir = b''
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50 if any(opts.get(o[1]) for o in commands.walkopts): # a)
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51 perfhack = False
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52 else: # b)
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53 relpats = [
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54 os.path.relpath(p, reporoot) if os.path.isabs(p) else p
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55 for p in pats
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56 ]
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57 # disable perfhack on '..' since it allows escaping from the repo
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58 if any(
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59 (
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60 b'..' in f
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61 or not os.path.isfile(
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62 facontext.pathhelper(repo, f, aopts).linelogpath
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63 )
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64 )
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65 for f in relpats
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66 ):
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67 perfhack = False
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68
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69 # perfhack: emit paths directory without checking with manifest
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70 # this can be incorrect if the rev dos not have file.
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71 if perfhack:
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72 for p in relpats:
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73 yield os.path.join(reldir, p)
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74 else:
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75
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76 def bad(x, y):
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77 raise error.Abort(b"%s: %s" % (x, y))
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78
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79 ctx = logcmdutil.revsingle(repo, rev)
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80 m = scmutil.match(ctx, pats, opts, badfn=bad)
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81 for p in ctx.walk(m):
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82 yield p
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83
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84
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85 fastannotatecommandargs = {
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86 'options': [
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87 (b'r', b'rev', b'.', _(b'annotate the specified revision'), _(b'REV')),
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88 (b'u', b'user', None, _(b'list the author (long with -v)')),
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89 (b'f', b'file', None, _(b'list the filename')),
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90 (b'd', b'date', None, _(b'list the date (short with -q)')),
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91 (b'n', b'number', None, _(b'list the revision number (default)')),
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92 (b'c', b'changeset', None, _(b'list the changeset')),
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93 (
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94 b'l',
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95 b'line-number',
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96 None,
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97 _(b'show line number at the first appearance'),
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98 ),
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99 (
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100 b'e',
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101 b'deleted',
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102 None,
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103 _(b'show deleted lines (slow) (EXPERIMENTAL)'),
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104 ),
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105 (
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106 b'',
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107 b'no-content',
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108 None,
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109 _(b'do not show file content (EXPERIMENTAL)'),
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110 ),
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111 (b'', b'no-follow', None, _(b"don't follow copies and renames")),
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112 (
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113 b'',
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114 b'linear',
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115 None,
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116 _(
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117 b'enforce linear history, ignore second parent '
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118 b'of merges (EXPERIMENTAL)'
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119 ),
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120 ),
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121 (
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122 b'',
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123 b'long-hash',
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124 None,
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125 _(b'show long changeset hash (EXPERIMENTAL)'),
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126 ),
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127 (
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128 b'',
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129 b'rebuild',
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130 None,
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131 _(b'rebuild cache even if it exists (EXPERIMENTAL)'),
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132 ),
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133 ]
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134 + commands.diffwsopts
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135 + commands.walkopts
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136 + commands.formatteropts,
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137 'synopsis': _(b'[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'),
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138 'inferrepo': True,
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139 }
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140
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141
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142 def fastannotate(ui, repo, *pats, **opts):
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143 """show changeset information by line for each file
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144
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145 List changes in files, showing the revision id responsible for each line.
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146
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147 This command is useful for discovering when a change was made and by whom.
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148
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149 By default this command prints revision numbers. If you include --file,
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150 --user, or --date, the revision number is suppressed unless you also
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151 include --number. The default format can also be customized by setting
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152 fastannotate.defaultformat.
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153
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154 Returns 0 on success.
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155
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156 .. container:: verbose
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157
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158 This command uses an implementation different from the vanilla annotate
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159 command, which may produce slightly different (while still reasonable)
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160 outputs for some cases.
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161
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162 Unlike the vanilla anootate, fastannotate follows rename regardless of
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163 the existence of --file.
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164
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165 For the best performance when running on a full repo, use -c, -l,
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166 avoid -u, -d, -n. Use --linear and --no-content to make it even faster.
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167
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168 For the best performance when running on a shallow (remotefilelog)
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169 repo, avoid --linear, --no-follow, or any diff options. As the server
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170 won't be able to populate annotate cache when non-default options
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171 affecting results are used.
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172 """
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173 if not pats:
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174 raise error.Abort(_(b'at least one filename or pattern is required'))
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175
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176 # performance hack: filtered repo can be slow. unfilter by default.
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177 if ui.configbool(b'fastannotate', b'unfilteredrepo'):
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178 repo = repo.unfiltered()
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179
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180 opts = pycompat.byteskwargs(opts)
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181
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182 rev = opts.get(b'rev', b'.')
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183 rebuild = opts.get(b'rebuild', False)
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184
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185 diffopts = patch.difffeatureopts(
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186 ui, opts, section=b'annotate', whitespace=True
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187 )
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188 aopts = facontext.annotateopts(
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189 diffopts=diffopts,
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190 followmerge=not opts.get(b'linear', False),
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191 followrename=not opts.get(b'no_follow', False),
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192 )
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193
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194 if not any(
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195 opts.get(s)
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196 for s in [b'user', b'date', b'file', b'number', b'changeset']
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197 ):
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198 # default 'number' for compatibility. but fastannotate is more
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199 # efficient with "changeset", "line-number" and "no-content".
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200 for name in ui.configlist(
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201 b'fastannotate', b'defaultformat', [b'number']
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202 ):
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203 opts[name] = True
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204
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205 ui.pager(b'fastannotate')
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206 template = opts.get(b'template')
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207 if template == b'json':
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208 formatter = faformatter.jsonformatter(ui, repo, opts)
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209 else:
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210 formatter = faformatter.defaultformatter(ui, repo, opts)
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211 showdeleted = opts.get(b'deleted', False)
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212 showlines = not bool(opts.get(b'no_content'))
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213 showpath = opts.get(b'file', False)
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214
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215 # find the head of the main (master) branch
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216 master = ui.config(b'fastannotate', b'mainbranch') or rev
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217
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218 # paths will be used for prefetching and the real annotating
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219 paths = list(_matchpaths(repo, rev, pats, opts, aopts))
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220
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221 # for client, prefetch from the server
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222 if util.safehasattr(repo, 'prefetchfastannotate'):
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223 repo.prefetchfastannotate(paths)
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224
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225 for path in paths:
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226 result = lines = existinglines = None
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227 while True:
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228 try:
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229 with facontext.annotatecontext(repo, path, aopts, rebuild) as a:
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230 result = a.annotate(
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231 rev,
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232 master=master,
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233 showpath=showpath,
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234 showlines=(showlines and not showdeleted),
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235 )
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236 if showdeleted:
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237 existinglines = {(l[0], l[1]) for l in result}
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238 result = a.annotatealllines(
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239 rev, showpath=showpath, showlines=showlines
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240 )
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241 break
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242 except (faerror.CannotReuseError, faerror.CorruptedFileError):
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243 # happens if master moves backwards, or the file was deleted
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244 # and readded, or renamed to an existing name, or corrupted.
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245 if rebuild: # give up since we have tried rebuild already
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246 raise
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247 else: # try a second time rebuilding the cache (slow)
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248 rebuild = True
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249 continue
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250
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251 if showlines:
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252 result, lines = result
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253
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254 formatter.write(result, lines, existinglines=existinglines)
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255 formatter.end()
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256
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257
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258 _newopts = set()
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259 _knownopts = {
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260 opt[1].replace(b'-', b'_')
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261 for opt in (fastannotatecommandargs['options'] + commands.globalopts)
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262 }
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263
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264
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265 def _annotatewrapper(orig, ui, repo, *pats, **opts):
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266 """used by wrapdefault"""
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267 # we need this hack until the obsstore has 0.0 seconds perf impact
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268 if ui.configbool(b'fastannotate', b'unfilteredrepo'):
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269 repo = repo.unfiltered()
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270
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271 # treat the file as text (skip the isbinary check)
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272 if ui.configbool(b'fastannotate', b'forcetext'):
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273 opts['text'] = True
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274
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275 # check if we need to do prefetch (client-side)
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276 rev = opts.get('rev')
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277 if util.safehasattr(repo, 'prefetchfastannotate') and rev is not None:
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278 paths = list(_matchpaths(repo, rev, pats, pycompat.byteskwargs(opts)))
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279 repo.prefetchfastannotate(paths)
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280
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281 return orig(ui, repo, *pats, **opts)
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282
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283
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284 def registercommand():
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285 """register the fastannotate command"""
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286 name = b'fastannotate|fastblame|fa'
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287 command(name, helpbasic=True, **fastannotatecommandargs)(fastannotate)
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288
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289
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290 def wrapdefault():
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291 """wrap the default annotate command, to be aware of the protocol"""
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292 extensions.wrapcommand(commands.table, b'annotate', _annotatewrapper)
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293
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294
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295 @command(
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296 b'debugbuildannotatecache',
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297 [(b'r', b'rev', b'', _(b'build up to the specific revision'), _(b'REV'))]
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298 + commands.walkopts,
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299 _(b'[-r REV] FILE...'),
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300 )
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301 def debugbuildannotatecache(ui, repo, *pats, **opts):
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302 """incrementally build fastannotate cache up to REV for specified files
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303
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304 If REV is not specified, use the config 'fastannotate.mainbranch'.
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305
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306 If fastannotate.client is True, download the annotate cache from the
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307 server. Otherwise, build the annotate cache locally.
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308
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309 The annotate cache will be built using the default diff and follow
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310 options and lives in '.hg/fastannotate/default'.
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311 """
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312 opts = pycompat.byteskwargs(opts)
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313 rev = opts.get(b'REV') or ui.config(b'fastannotate', b'mainbranch')
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314 if not rev:
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315 raise error.Abort(
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316 _(b'you need to provide a revision'),
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317 hint=_(b'set fastannotate.mainbranch or use --rev'),
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318 )
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319 if ui.configbool(b'fastannotate', b'unfilteredrepo'):
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320 repo = repo.unfiltered()
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321 ctx = logcmdutil.revsingle(repo, rev)
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322 m = scmutil.match(ctx, pats, opts)
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323 paths = list(ctx.walk(m))
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324 if util.safehasattr(repo, 'prefetchfastannotate'):
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325 # client
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326 if opts.get(b'REV'):
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327 raise error.Abort(_(b'--rev cannot be used for client'))
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328 repo.prefetchfastannotate(paths)
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329 else:
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330 # server, or full repo
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331 progress = ui.makeprogress(_(b'building'), total=len(paths))
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332 for i, path in enumerate(paths):
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333 progress.update(i)
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334 with facontext.annotatecontext(repo, path) as actx:
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335 try:
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336 if actx.isuptodate(rev):
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337 continue
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338 actx.annotate(rev, rev)
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339 except (faerror.CannotReuseError, faerror.CorruptedFileError):
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340 # the cache is broken (could happen with renaming so the
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341 # file history gets invalidated). rebuild and try again.
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342 ui.debug(
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343 b'fastannotate: %s: rebuilding broken cache\n' % path
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344 )
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345 actx.rebuild()
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346 try:
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347 actx.annotate(rev, rev)
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348 except Exception as ex:
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349 # possibly a bug, but should not stop us from building
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350 # cache for other files.
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351 ui.warn(
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352 _(
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353 b'fastannotate: %s: failed to '
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354 b'build cache: %r\n'
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355 )
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356 % (path, ex)
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357 )
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358 progress.complete()