Mercurial > public > mercurial-scm > hg-stable

annotate hgext/fastannotate/commands.py @ 43076:2372284d9457

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formatting: blacken the codebase This is using my patch to black (https://github.com/psf/black/pull/826) so we don't un-wrap collection literals. Done with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S # skip-blame mass-reformatting only # no-check-commit reformats foo_bar functions Differential Revision: https://phab.mercurial-scm.org/D6971
author Augie Fackler <augie@google.com>
date Sun, 06 Oct 2019 09:45:02 -0400
parents 566daffc607d
children 687b865b95ad
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rev   line source
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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 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('fastannotate', '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 == '.':
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48 reldir = ''
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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 '..' 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("%s: %s" % (x, y))
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77
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78 ctx = scmutil.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 r'options': [
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86 ('r', 'rev', '.', _('annotate the specified revision'), _('REV')),
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87 ('u', 'user', None, _('list the author (long with -v)')),
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88 ('f', 'file', None, _('list the filename')),
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89 ('d', 'date', None, _('list the date (short with -q)')),
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90 ('n', 'number', None, _('list the revision number (default)')),
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91 ('c', 'changeset', None, _('list the changeset')),
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92 (
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93 'l',
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94 'line-number',
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95 None,
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96 _('show line number at the first ' 'appearance'),
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97 ),
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98 ('e', 'deleted', None, _('show deleted lines (slow) (EXPERIMENTAL)')),
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99 ('', 'no-content', None, _('do not show file content (EXPERIMENTAL)')),
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100 ('', 'no-follow', None, _("don't follow copies and renames")),
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101 (
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102 '',
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103 'linear',
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104 None,
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105 _(
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106 'enforce linear history, ignore second parent '
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107 'of merges (EXPERIMENTAL)'
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108 ),
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109 ),
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110 ('', 'long-hash', None, _('show long changeset hash (EXPERIMENTAL)')),
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111 (
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112 '',
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113 'rebuild',
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114 None,
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115 _('rebuild cache even if it exists ' '(EXPERIMENTAL)'),
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116 ),
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117 ]
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118 + commands.diffwsopts
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119 + commands.walkopts
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120 + commands.formatteropts,
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121 r'synopsis': _('[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'),
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122 r'inferrepo': True,
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123 }
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124
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125
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126 def fastannotate(ui, repo, *pats, **opts):
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127 """show changeset information by line for each file
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128
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129 List changes in files, showing the revision id responsible for each line.
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130
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131 This command is useful for discovering when a change was made and by whom.
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132
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133 By default this command prints revision numbers. If you include --file,
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134 --user, or --date, the revision number is suppressed unless you also
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135 include --number. The default format can also be customized by setting
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136 fastannotate.defaultformat.
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137
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138 Returns 0 on success.
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139
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140 .. container:: verbose
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141
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142 This command uses an implementation different from the vanilla annotate
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143 command, which may produce slightly different (while still reasonable)
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144 outputs for some cases.
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145
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146 Unlike the vanilla anootate, fastannotate follows rename regardless of
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147 the existence of --file.
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148
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149 For the best performance when running on a full repo, use -c, -l,
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150 avoid -u, -d, -n. Use --linear and --no-content to make it even faster.
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151
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152 For the best performance when running on a shallow (remotefilelog)
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153 repo, avoid --linear, --no-follow, or any diff options. As the server
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154 won't be able to populate annotate cache when non-default options
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155 affecting results are used.
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156 """
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157 if not pats:
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158 raise error.Abort(_('at least one filename or pattern is required'))
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159
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160 # performance hack: filtered repo can be slow. unfilter by default.
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161 if ui.configbool('fastannotate', 'unfilteredrepo'):
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162 repo = repo.unfiltered()
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163
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164 opts = pycompat.byteskwargs(opts)
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165
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166 rev = opts.get('rev', '.')
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167 rebuild = opts.get('rebuild', False)
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168
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169 diffopts = patch.difffeatureopts(
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170 ui, opts, section='annotate', whitespace=True
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171 )
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172 aopts = facontext.annotateopts(
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173 diffopts=diffopts,
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174 followmerge=not opts.get('linear', False),
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175 followrename=not opts.get('no_follow', False),
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176 )
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177
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178 if not any(
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179 opts.get(s) for s in ['user', 'date', 'file', 'number', 'changeset']
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180 ):
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181 # default 'number' for compatibility. but fastannotate is more
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182 # efficient with "changeset", "line-number" and "no-content".
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183 for name in ui.configlist('fastannotate', 'defaultformat', ['number']):
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184 opts[name] = True
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185
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186 ui.pager('fastannotate')
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187 template = opts.get('template')
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188 if template == 'json':
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189 formatter = faformatter.jsonformatter(ui, repo, opts)
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190 else:
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191 formatter = faformatter.defaultformatter(ui, repo, opts)
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192 showdeleted = opts.get('deleted', False)
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193 showlines = not bool(opts.get('no_content'))
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194 showpath = opts.get('file', False)
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195
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196 # find the head of the main (master) branch
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197 master = ui.config('fastannotate', 'mainbranch') or rev
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198
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199 # paths will be used for prefetching and the real annotating
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200 paths = list(_matchpaths(repo, rev, pats, opts, aopts))
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201
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202 # for client, prefetch from the server
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203 if util.safehasattr(repo, 'prefetchfastannotate'):
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204 repo.prefetchfastannotate(paths)
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205
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206 for path in paths:
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207 result = lines = existinglines = None
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208 while True:
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209 try:
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210 with facontext.annotatecontext(repo, path, aopts, rebuild) as a:
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211 result = a.annotate(
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212 rev,
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213 master=master,
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214 showpath=showpath,
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215 showlines=(showlines and not showdeleted),
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216 )
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217 if showdeleted:
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218 existinglines = set((l[0], l[1]) for l in result)
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219 result = a.annotatealllines(
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220 rev, showpath=showpath, showlines=showlines
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221 )
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222 break
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223 except (faerror.CannotReuseError, faerror.CorruptedFileError):
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224 # happens if master moves backwards, or the file was deleted
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225 # and readded, or renamed to an existing name, or corrupted.
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226 if rebuild: # give up since we have tried rebuild already
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227 raise
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228 else: # try a second time rebuilding the cache (slow)
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229 rebuild = True
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230 continue
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231
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232 if showlines:
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233 result, lines = result
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234
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235 formatter.write(result, lines, existinglines=existinglines)
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236 formatter.end()
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237
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238
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239 _newopts = set()
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240 _knownopts = {
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241 opt[1].replace('-', '_')
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242 for opt in (fastannotatecommandargs[r'options'] + commands.globalopts)
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243 }
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244
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245
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246 def _annotatewrapper(orig, ui, repo, *pats, **opts):
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247 """used by wrapdefault"""
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248 # we need this hack until the obsstore has 0.0 seconds perf impact
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249 if ui.configbool('fastannotate', 'unfilteredrepo'):
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250 repo = repo.unfiltered()
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251
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252 # treat the file as text (skip the isbinary check)
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253 if ui.configbool('fastannotate', 'forcetext'):
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254 opts[r'text'] = True
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255
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256 # check if we need to do prefetch (client-side)
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257 rev = opts.get(r'rev')
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258 if util.safehasattr(repo, 'prefetchfastannotate') and rev is not None:
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259 paths = list(_matchpaths(repo, rev, pats, pycompat.byteskwargs(opts)))
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260 repo.prefetchfastannotate(paths)
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261
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262 return orig(ui, repo, *pats, **opts)
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263
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264
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265 def registercommand():
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266 """register the fastannotate command"""
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267 name = 'fastannotate|fastblame|fa'
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268 command(name, helpbasic=True, **fastannotatecommandargs)(fastannotate)
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269
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270
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271 def wrapdefault():
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272 """wrap the default annotate command, to be aware of the protocol"""
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273 extensions.wrapcommand(commands.table, 'annotate', _annotatewrapper)
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274
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275
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276 @command(
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277 'debugbuildannotatecache',
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278 [('r', 'rev', '', _('build up to the specific revision'), _('REV'))]
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279 + commands.walkopts,
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280 _('[-r REV] FILE...'),
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281 )
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282 def debugbuildannotatecache(ui, repo, *pats, **opts):
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283 """incrementally build fastannotate cache up to REV for specified files
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284
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285 If REV is not specified, use the config 'fastannotate.mainbranch'.
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286
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287 If fastannotate.client is True, download the annotate cache from the
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288 server. Otherwise, build the annotate cache locally.
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289
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290 The annotate cache will be built using the default diff and follow
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291 options and lives in '.hg/fastannotate/default'.
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292 """
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293 opts = pycompat.byteskwargs(opts)
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294 rev = opts.get('REV') or ui.config('fastannotate', 'mainbranch')
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295 if not rev:
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296 raise error.Abort(
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297 _('you need to provide a revision'),
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298 hint=_('set fastannotate.mainbranch or use --rev'),
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299 )
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300 if ui.configbool('fastannotate', 'unfilteredrepo'):
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301 repo = repo.unfiltered()
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302 ctx = scmutil.revsingle(repo, rev)
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303 m = scmutil.match(ctx, pats, opts)
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304 paths = list(ctx.walk(m))
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305 if util.safehasattr(repo, 'prefetchfastannotate'):
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306 # client
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307 if opts.get('REV'):
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308 raise error.Abort(_('--rev cannot be used for client'))
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309 repo.prefetchfastannotate(paths)
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310 else:
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311 # server, or full repo
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312 progress = ui.makeprogress(_('building'), total=len(paths))
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313 for i, path in enumerate(paths):
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314 progress.update(i)
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315 with facontext.annotatecontext(repo, path) as actx:
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316 try:
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317 if actx.isuptodate(rev):
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318 continue
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319 actx.annotate(rev, rev)
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320 except (faerror.CannotReuseError, faerror.CorruptedFileError):
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321 # the cache is broken (could happen with renaming so the
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322 # file history gets invalidated). rebuild and try again.
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323 ui.debug(
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324 'fastannotate: %s: rebuilding broken cache\n' % path
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325 )
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326 actx.rebuild()
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327 try:
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328 actx.annotate(rev, rev)
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329 except Exception as ex:
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330 # possibly a bug, but should not stop us from building
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331 # cache for other files.
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332 ui.warn(
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333 _(
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334 'fastannotate: %s: failed to '
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335 'build cache: %r\n'
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336 )
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337 % (path, ex)
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338 )
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339 progress.complete()