Mercurial > hg
annotate hgext/fix.py @ 45613:ddcee0b0fd67
changing-files: add a utility to compute the merged files post-commit
We will need it in `_getsidedata` as soon as we start persisting that set.
Differential Revision: https://phab.mercurial-scm.org/D9089
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Fri, 25 Sep 2020 11:29:19 +0200 |
parents | 3ea3b85df03f |
children | 04de8a1ec08f |
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1 # fix - rewrite file content in changesets and working copy |
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2 # |
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3 # Copyright 2018 Google LLC. |
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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 """rewrite file content in changesets or working copy (EXPERIMENTAL) |
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8 |
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9 Provides a command that runs configured tools on the contents of modified files, |
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10 writing back any fixes to the working copy or replacing changesets. |
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11 |
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12 Here is an example configuration that causes :hg:`fix` to apply automatic |
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13 formatting fixes to modified lines in C++ code:: |
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14 |
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15 [fix] |
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16 clang-format:command=clang-format --assume-filename={rootpath} |
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17 clang-format:linerange=--lines={first}:{last} |
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18 clang-format:pattern=set:**.cpp or **.hpp |
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19 |
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20 The :command suboption forms the first part of the shell command that will be |
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21 used to fix a file. The content of the file is passed on standard input, and the |
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22 fixed file content is expected on standard output. Any output on standard error |
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23 will be displayed as a warning. If the exit status is not zero, the file will |
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24 not be affected. A placeholder warning is displayed if there is a non-zero exit |
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25 status but no standard error output. Some values may be substituted into the |
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26 command:: |
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27 |
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28 {rootpath} The path of the file being fixed, relative to the repo root |
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29 {basename} The name of the file being fixed, without the directory path |
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30 |
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31 If the :linerange suboption is set, the tool will only be run if there are |
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32 changed lines in a file. The value of this suboption is appended to the shell |
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33 command once for every range of changed lines in the file. Some values may be |
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34 substituted into the command:: |
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35 |
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36 {first} The 1-based line number of the first line in the modified range |
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37 {last} The 1-based line number of the last line in the modified range |
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38 |
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39 Deleted sections of a file will be ignored by :linerange, because there is no |
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40 corresponding line range in the version being fixed. |
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41 |
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42 By default, tools that set :linerange will only be executed if there is at least |
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43 one changed line range. This is meant to prevent accidents like running a code |
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44 formatter in such a way that it unexpectedly reformats the whole file. If such a |
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45 tool needs to operate on unchanged files, it should set the :skipclean suboption |
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46 to false. |
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47 |
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48 The :pattern suboption determines which files will be passed through each |
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49 configured tool. See :hg:`help patterns` for possible values. However, all |
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50 patterns are relative to the repo root, even if that text says they are relative |
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51 to the current working directory. If there are file arguments to :hg:`fix`, the |
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52 intersection of these patterns is used. |
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53 |
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54 There is also a configurable limit for the maximum size of file that will be |
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55 processed by :hg:`fix`:: |
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56 |
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57 [fix] |
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58 maxfilesize = 2MB |
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59 |
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60 Normally, execution of configured tools will continue after a failure (indicated |
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61 by a non-zero exit status). It can also be configured to abort after the first |
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62 such failure, so that no files will be affected if any tool fails. This abort |
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63 will also cause :hg:`fix` to exit with a non-zero status:: |
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64 |
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65 [fix] |
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66 failure = abort |
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67 |
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68 When multiple tools are configured to affect a file, they execute in an order |
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69 defined by the :priority suboption. The priority suboption has a default value |
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70 of zero for each tool. Tools are executed in order of descending priority. The |
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71 execution order of tools with equal priority is unspecified. For example, you |
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72 could use the 'sort' and 'head' utilities to keep only the 10 smallest numbers |
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73 in a text file by ensuring that 'sort' runs before 'head':: |
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74 |
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75 [fix] |
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76 sort:command = sort -n |
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77 head:command = head -n 10 |
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78 sort:pattern = numbers.txt |
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79 head:pattern = numbers.txt |
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80 sort:priority = 2 |
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81 head:priority = 1 |
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82 |
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83 To account for changes made by each tool, the line numbers used for incremental |
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84 formatting are recomputed before executing the next tool. So, each tool may see |
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85 different values for the arguments added by the :linerange suboption. |
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86 |
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87 Each fixer tool is allowed to return some metadata in addition to the fixed file |
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88 content. The metadata must be placed before the file content on stdout, |
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89 separated from the file content by a zero byte. The metadata is parsed as a JSON |
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90 value (so, it should be UTF-8 encoded and contain no zero bytes). A fixer tool |
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91 is expected to produce this metadata encoding if and only if the :metadata |
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92 suboption is true:: |
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93 |
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94 [fix] |
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95 tool:command = tool --prepend-json-metadata |
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96 tool:metadata = true |
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97 |
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98 The metadata values are passed to hooks, which can be used to print summaries or |
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99 perform other post-fixing work. The supported hooks are:: |
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100 |
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101 "postfixfile" |
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102 Run once for each file in each revision where any fixer tools made changes |
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103 to the file content. Provides "$HG_REV" and "$HG_PATH" to identify the file, |
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104 and "$HG_METADATA" with a map of fixer names to metadata values from fixer |
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105 tools that affected the file. Fixer tools that didn't affect the file have a |
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106 value of None. Only fixer tools that executed are present in the metadata. |
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107 |
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108 "postfix" |
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109 Run once after all files and revisions have been handled. Provides |
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110 "$HG_REPLACEMENTS" with information about what revisions were created and |
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111 made obsolete. Provides a boolean "$HG_WDIRWRITTEN" to indicate whether any |
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112 files in the working copy were updated. Provides a list "$HG_METADATA" |
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113 mapping fixer tool names to lists of metadata values returned from |
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114 executions that modified a file. This aggregates the same metadata |
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115 previously passed to the "postfixfile" hook. |
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116 |
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117 Fixer tools are run in the repository's root directory. This allows them to read |
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118 configuration files from the working copy, or even write to the working copy. |
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119 The working copy is not updated to match the revision being fixed. In fact, |
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120 several revisions may be fixed in parallel. Writes to the working copy are not |
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121 amended into the revision being fixed; fixer tools should always write fixed |
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122 file content back to stdout as documented above. |
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123 """ |
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124 |
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125 from __future__ import absolute_import |
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126 |
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127 import collections |
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128 import itertools |
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129 import os |
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130 import re |
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131 import subprocess |
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132 |
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133 from mercurial.i18n import _ |
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134 from mercurial.node import nullrev |
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135 from mercurial.node import wdirrev |
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136 |
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137 from mercurial.utils import procutil |
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138 |
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139 from mercurial import ( |
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140 cmdutil, |
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141 context, |
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142 copies, |
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143 error, |
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144 match as matchmod, |
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145 mdiff, |
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146 merge, |
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147 mergestate as mergestatemod, |
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148 pycompat, |
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149 registrar, |
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150 rewriteutil, |
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151 scmutil, |
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152 util, |
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153 worker, |
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154 ) |
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155 |
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156 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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157 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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158 # be specifying the version(s) of Mercurial they are tested with, or |
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159 # leave the attribute unspecified. |
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160 testedwith = b'ships-with-hg-core' |
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161 |
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162 cmdtable = {} |
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163 command = registrar.command(cmdtable) |
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164 |
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165 configtable = {} |
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166 configitem = registrar.configitem(configtable) |
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167 |
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168 # Register the suboptions allowed for each configured fixer, and default values. |
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169 FIXER_ATTRS = { |
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170 b'command': None, |
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171 b'linerange': None, |
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172 b'pattern': None, |
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173 b'priority': 0, |
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174 b'metadata': False, |
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175 b'skipclean': True, |
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176 b'enabled': True, |
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177 } |
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178 |
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179 for key, default in FIXER_ATTRS.items(): |
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180 configitem(b'fix', b'.*:%s$' % key, default=default, generic=True) |
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181 |
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182 # A good default size allows most source code files to be fixed, but avoids |
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183 # letting fixer tools choke on huge inputs, which could be surprising to the |
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184 # user. |
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185 configitem(b'fix', b'maxfilesize', default=b'2MB') |
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186 |
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187 # Allow fix commands to exit non-zero if an executed fixer tool exits non-zero. |
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188 # This helps users do shell scripts that stop when a fixer tool signals a |
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189 # problem. |
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190 configitem(b'fix', b'failure', default=b'continue') |
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191 |
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192 |
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193 def checktoolfailureaction(ui, message, hint=None): |
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194 """Abort with 'message' if fix.failure=abort""" |
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195 action = ui.config(b'fix', b'failure') |
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196 if action not in (b'continue', b'abort'): |
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197 raise error.Abort( |
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198 _(b'unknown fix.failure action: %s') % (action,), |
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199 hint=_(b'use "continue" or "abort"'), |
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200 ) |
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201 if action == b'abort': |
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202 raise error.Abort(message, hint=hint) |
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203 |
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204 |
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205 allopt = (b'', b'all', False, _(b'fix all non-public non-obsolete revisions')) |
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206 baseopt = ( |
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207 b'', |
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208 b'base', |
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209 [], |
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210 _( |
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211 b'revisions to diff against (overrides automatic ' |
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212 b'selection, and applies to every revision being ' |
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213 b'fixed)' |
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214 ), |
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215 _(b'REV'), |
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216 ) |
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217 revopt = (b'r', b'rev', [], _(b'revisions to fix (ADVANCED)'), _(b'REV')) |
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218 sourceopt = ( |
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219 b's', |
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220 b'source', |
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221 [], |
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222 _(b'fix the specified revisions and their descendants'), |
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223 _(b'REV'), |
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224 ) |
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225 wdiropt = (b'w', b'working-dir', False, _(b'fix the working directory')) |
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226 wholeopt = (b'', b'whole', False, _(b'always fix every line of a file')) |
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227 usage = _(b'[OPTION]... [FILE]...') |
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228 |
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229 |
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230 @command( |
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231 b'fix', |
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232 [allopt, baseopt, revopt, sourceopt, wdiropt, wholeopt], |
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233 usage, |
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234 helpcategory=command.CATEGORY_FILE_CONTENTS, |
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235 ) |
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236 def fix(ui, repo, *pats, **opts): |
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237 """rewrite file content in changesets or working directory |
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238 |
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239 Runs any configured tools to fix the content of files. Only affects files |
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240 with changes, unless file arguments are provided. Only affects changed lines |
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241 of files, unless the --whole flag is used. Some tools may always affect the |
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242 whole file regardless of --whole. |
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243 |
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244 If --working-dir is used, files with uncommitted changes in the working copy |
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245 will be fixed. Note that no backup are made. |
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246 |
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247 If revisions are specified with --source, those revisions and their |
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248 descendants will be checked, and they may be replaced with new revisions |
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249 that have fixed file content. By automatically including the descendants, |
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250 no merging, rebasing, or evolution will be required. If an ancestor of the |
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251 working copy is included, then the working copy itself will also be fixed, |
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252 and the working copy will be updated to the fixed parent. |
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253 |
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254 When determining what lines of each file to fix at each revision, the whole |
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255 set of revisions being fixed is considered, so that fixes to earlier |
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256 revisions are not forgotten in later ones. The --base flag can be used to |
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257 override this default behavior, though it is not usually desirable to do so. |
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258 """ |
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259 opts = pycompat.byteskwargs(opts) |
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260 cmdutil.check_at_most_one_arg(opts, b'all', b'source', b'rev') |
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261 cmdutil.check_incompatible_arguments( |
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262 opts, b'working_dir', [b'all', b'source'] |
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263 ) |
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264 |
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265 with repo.wlock(), repo.lock(), repo.transaction(b'fix'): |
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266 revstofix = getrevstofix(ui, repo, opts) |
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267 basectxs = getbasectxs(repo, opts, revstofix) |
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268 workqueue, numitems = getworkqueue( |
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269 ui, repo, pats, opts, revstofix, basectxs |
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270 ) |
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271 basepaths = getbasepaths(repo, opts, workqueue, basectxs) |
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272 fixers = getfixers(ui) |
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273 |
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274 # Rather than letting each worker independently fetch the files |
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275 # (which also would add complications for shared/keepalive |
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276 # connections), prefetch them all first. |
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277 _prefetchfiles(repo, workqueue, basepaths) |
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278 |
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279 # There are no data dependencies between the workers fixing each file |
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280 # revision, so we can use all available parallelism. |
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281 def getfixes(items): |
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282 for rev, path in items: |
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283 ctx = repo[rev] |
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284 olddata = ctx[path].data() |
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285 metadata, newdata = fixfile( |
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286 ui, repo, opts, fixers, ctx, path, basepaths, basectxs[rev] |
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287 ) |
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288 # Don't waste memory/time passing unchanged content back, but |
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289 # produce one result per item either way. |
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290 yield ( |
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291 rev, |
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292 path, |
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293 metadata, |
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294 newdata if newdata != olddata else None, |
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295 ) |
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296 |
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297 results = worker.worker( |
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298 ui, 1.0, getfixes, tuple(), workqueue, threadsafe=False |
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299 ) |
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300 |
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301 # We have to hold on to the data for each successor revision in memory |
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302 # until all its parents are committed. We ensure this by committing and |
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303 # freeing memory for the revisions in some topological order. This |
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304 # leaves a little bit of memory efficiency on the table, but also makes |
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305 # the tests deterministic. It might also be considered a feature since |
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306 # it makes the results more easily reproducible. |
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307 filedata = collections.defaultdict(dict) |
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308 aggregatemetadata = collections.defaultdict(list) |
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309 replacements = {} |
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310 wdirwritten = False |
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311 commitorder = sorted(revstofix, reverse=True) |
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312 with ui.makeprogress( |
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313 topic=_(b'fixing'), unit=_(b'files'), total=sum(numitems.values()) |
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314 ) as progress: |
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315 for rev, path, filerevmetadata, newdata in results: |
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316 progress.increment(item=path) |
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317 for fixername, fixermetadata in filerevmetadata.items(): |
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318 aggregatemetadata[fixername].append(fixermetadata) |
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319 if newdata is not None: |
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320 filedata[rev][path] = newdata |
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321 hookargs = { |
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322 b'rev': rev, |
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323 b'path': path, |
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324 b'metadata': filerevmetadata, |
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325 } |
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326 repo.hook( |
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327 b'postfixfile', |
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328 throw=False, |
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329 **pycompat.strkwargs(hookargs) |
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330 ) |
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331 numitems[rev] -= 1 |
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332 # Apply the fixes for this and any other revisions that are |
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333 # ready and sitting at the front of the queue. Using a loop here |
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334 # prevents the queue from being blocked by the first revision to |
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335 # be ready out of order. |
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336 while commitorder and not numitems[commitorder[-1]]: |
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337 rev = commitorder.pop() |
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338 ctx = repo[rev] |
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339 if rev == wdirrev: |
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340 writeworkingdir(repo, ctx, filedata[rev], replacements) |
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341 wdirwritten = bool(filedata[rev]) |
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342 else: |
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343 replacerev(ui, repo, ctx, filedata[rev], replacements) |
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344 del filedata[rev] |
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345 |
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346 cleanup(repo, replacements, wdirwritten) |
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347 hookargs = { |
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348 b'replacements': replacements, |
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349 b'wdirwritten': wdirwritten, |
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350 b'metadata': aggregatemetadata, |
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351 } |
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352 repo.hook(b'postfix', throw=True, **pycompat.strkwargs(hookargs)) |
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353 |
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354 |
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355 def cleanup(repo, replacements, wdirwritten): |
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356 """Calls scmutil.cleanupnodes() with the given replacements. |
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357 |
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358 "replacements" is a dict from nodeid to nodeid, with one key and one value |
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359 for every revision that was affected by fixing. This is slightly different |
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360 from cleanupnodes(). |
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361 |
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362 "wdirwritten" is a bool which tells whether the working copy was affected by |
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363 fixing, since it has no entry in "replacements". |
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364 |
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365 Useful as a hook point for extending "hg fix" with output summarizing the |
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366 effects of the command, though we choose not to output anything here. |
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367 """ |
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368 replacements = { |
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369 prec: [succ] for prec, succ in pycompat.iteritems(replacements) |
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370 } |
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371 scmutil.cleanupnodes(repo, replacements, b'fix', fixphase=True) |
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372 |
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373 |
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374 def getworkqueue(ui, repo, pats, opts, revstofix, basectxs): |
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375 """"Constructs the list of files to be fixed at specific revisions |
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376 |
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377 It is up to the caller how to consume the work items, and the only |
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378 dependence between them is that replacement revisions must be committed in |
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379 topological order. Each work item represents a file in the working copy or |
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380 in some revision that should be fixed and written back to the working copy |
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381 or into a replacement revision. |
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382 |
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383 Work items for the same revision are grouped together, so that a worker |
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384 pool starting with the first N items in parallel is likely to finish the |
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385 first revision's work before other revisions. This can allow us to write |
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386 the result to disk and reduce memory footprint. At time of writing, the |
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387 partition strategy in worker.py seems favorable to this. We also sort the |
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388 items by ascending revision number to match the order in which we commit |
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389 the fixes later. |
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390 """ |
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391 workqueue = [] |
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392 numitems = collections.defaultdict(int) |
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393 maxfilesize = ui.configbytes(b'fix', b'maxfilesize') |
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394 for rev in sorted(revstofix): |
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395 fixctx = repo[rev] |
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396 match = scmutil.match(fixctx, pats, opts) |
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397 for path in sorted( |
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398 pathstofix(ui, repo, pats, opts, match, basectxs[rev], fixctx) |
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399 ): |
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400 fctx = fixctx[path] |
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401 if fctx.islink(): |
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402 continue |
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403 if fctx.size() > maxfilesize: |
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404 ui.warn( |
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405 _(b'ignoring file larger than %s: %s\n') |
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406 % (util.bytecount(maxfilesize), path) |
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407 ) |
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408 continue |
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409 workqueue.append((rev, path)) |
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410 numitems[rev] += 1 |
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411 return workqueue, numitems |
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412 |
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413 |
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414 def getrevstofix(ui, repo, opts): |
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415 """Returns the set of revision numbers that should be fixed""" |
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416 if opts[b'all']: |
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417 revs = repo.revs(b'(not public() and not obsolete()) or wdir()') |
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418 elif opts[b'source']: |
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419 source_revs = scmutil.revrange(repo, opts[b'source']) |
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420 revs = set(repo.revs(b'%ld::', source_revs)) |
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421 if wdirrev in source_revs: |
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422 # `wdir()::` is currently empty, so manually add wdir |
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423 revs.add(wdirrev) |
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424 if repo[b'.'].rev() in revs: |
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425 revs.add(wdirrev) |
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426 else: |
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427 revs = set(scmutil.revrange(repo, opts[b'rev'])) |
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428 if opts.get(b'working_dir'): |
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429 revs.add(wdirrev) |
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430 for rev in revs: |
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431 checkfixablectx(ui, repo, repo[rev]) |
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432 # Allow fixing only wdir() even if there's an unfinished operation |
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433 if not (len(revs) == 1 and wdirrev in revs): |
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434 cmdutil.checkunfinished(repo) |
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435 rewriteutil.precheck(repo, revs, b'fix') |
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436 if wdirrev in revs and list( |
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437 mergestatemod.mergestate.read(repo).unresolved() |
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438 ): |
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439 raise error.Abort(b'unresolved conflicts', hint=b"use 'hg resolve'") |
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440 if not revs: |
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441 raise error.Abort( |
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442 b'no changesets specified', hint=b'use --rev or --working-dir' |
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443 ) |
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444 return revs |
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445 |
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446 |
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447 def checkfixablectx(ui, repo, ctx): |
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448 """Aborts if the revision shouldn't be replaced with a fixed one.""" |
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449 if ctx.obsolete(): |
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450 # It would be better to actually check if the revision has a successor. |
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451 allowdivergence = ui.configbool( |
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452 b'experimental', b'evolution.allowdivergence' |
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453 ) |
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454 if not allowdivergence: |
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455 raise error.Abort( |
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456 b'fixing obsolete revision could cause divergence' |
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457 ) |
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458 |
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459 |
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460 def pathstofix(ui, repo, pats, opts, match, basectxs, fixctx): |
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461 """Returns the set of files that should be fixed in a context |
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462 |
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463 The result depends on the base contexts; we include any file that has |
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464 changed relative to any of the base contexts. Base contexts should be |
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465 ancestors of the context being fixed. |
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466 """ |
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467 files = set() |
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468 for basectx in basectxs: |
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469 stat = basectx.status( |
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470 fixctx, match=match, listclean=bool(pats), listunknown=bool(pats) |
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471 ) |
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472 files.update( |
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473 set( |
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474 itertools.chain( |
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475 stat.added, stat.modified, stat.clean, stat.unknown |
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476 ) |
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477 ) |
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478 ) |
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479 return files |
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480 |
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481 |
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482 def lineranges(opts, path, basepaths, basectxs, fixctx, content2): |
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483 """Returns the set of line ranges that should be fixed in a file |
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484 |
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485 Of the form [(10, 20), (30, 40)]. |
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486 |
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487 This depends on the given base contexts; we must consider lines that have |
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488 changed versus any of the base contexts, and whether the file has been |
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489 renamed versus any of them. |
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490 |
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491 Another way to understand this is that we exclude line ranges that are |
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492 common to the file in all base contexts. |
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493 """ |
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494 if opts.get(b'whole'): |
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495 # Return a range containing all lines. Rely on the diff implementation's |
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496 # idea of how many lines are in the file, instead of reimplementing it. |
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497 return difflineranges(b'', content2) |
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498 |
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499 rangeslist = [] |
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500 for basectx in basectxs: |
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501 basepath = basepaths.get((basectx.rev(), fixctx.rev(), path), path) |
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502 |
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503 if basepath in basectx: |
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504 content1 = basectx[basepath].data() |
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505 else: |
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506 content1 = b'' |
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507 rangeslist.extend(difflineranges(content1, content2)) |
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508 return unionranges(rangeslist) |
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509 |
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510 |
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511 def getbasepaths(repo, opts, workqueue, basectxs): |
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512 if opts.get(b'whole'): |
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513 # Base paths will never be fetched for line range determination. |
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514 return {} |
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515 |
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516 basepaths = {} |
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517 for rev, path in workqueue: |
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518 fixctx = repo[rev] |
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519 for basectx in basectxs[rev]: |
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520 basepath = copies.pathcopies(basectx, fixctx).get(path, path) |
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521 if basepath in basectx: |
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522 basepaths[(basectx.rev(), fixctx.rev(), path)] = basepath |
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523 return basepaths |
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524 |
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525 |
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526 def unionranges(rangeslist): |
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527 """Return the union of some closed intervals |
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528 |
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529 >>> unionranges([]) |
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530 [] |
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531 >>> unionranges([(1, 100)]) |
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532 [(1, 100)] |
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533 >>> unionranges([(1, 100), (1, 100)]) |
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534 [(1, 100)] |
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535 >>> unionranges([(1, 100), (2, 100)]) |
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536 [(1, 100)] |
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537 >>> unionranges([(1, 99), (1, 100)]) |
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538 [(1, 100)] |
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539 >>> unionranges([(1, 100), (40, 60)]) |
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540 [(1, 100)] |
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541 >>> unionranges([(1, 49), (50, 100)]) |
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542 [(1, 100)] |
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543 >>> unionranges([(1, 48), (50, 100)]) |
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544 [(1, 48), (50, 100)] |
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545 >>> unionranges([(1, 2), (3, 4), (5, 6)]) |
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546 [(1, 6)] |
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547 """ |
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548 rangeslist = sorted(set(rangeslist)) |
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549 unioned = [] |
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550 if rangeslist: |
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551 unioned, rangeslist = [rangeslist[0]], rangeslist[1:] |
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552 for a, b in rangeslist: |
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553 c, d = unioned[-1] |
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554 if a > d + 1: |
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555 unioned.append((a, b)) |
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556 else: |
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557 unioned[-1] = (c, max(b, d)) |
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558 return unioned |
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559 |
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560 |
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561 def difflineranges(content1, content2): |
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562 """Return list of line number ranges in content2 that differ from content1. |
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563 |
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564 Line numbers are 1-based. The numbers are the first and last line contained |
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565 in the range. Single-line ranges have the same line number for the first and |
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566 last line. Excludes any empty ranges that result from lines that are only |
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567 present in content1. Relies on mdiff's idea of where the line endings are in |
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568 the string. |
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569 |
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570 >>> from mercurial import pycompat |
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571 >>> lines = lambda s: b'\\n'.join([c for c in pycompat.iterbytestr(s)]) |
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572 >>> difflineranges2 = lambda a, b: difflineranges(lines(a), lines(b)) |
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573 >>> difflineranges2(b'', b'') |
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574 [] |
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575 >>> difflineranges2(b'a', b'') |
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576 [] |
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577 >>> difflineranges2(b'', b'A') |
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578 [(1, 1)] |
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579 >>> difflineranges2(b'a', b'a') |
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580 [] |
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581 >>> difflineranges2(b'a', b'A') |
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582 [(1, 1)] |
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583 >>> difflineranges2(b'ab', b'') |
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584 [] |
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585 >>> difflineranges2(b'', b'AB') |
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586 [(1, 2)] |
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587 >>> difflineranges2(b'abc', b'ac') |
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588 [] |
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589 >>> difflineranges2(b'ab', b'aCb') |
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590 [(2, 2)] |
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591 >>> difflineranges2(b'abc', b'aBc') |
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592 [(2, 2)] |
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593 >>> difflineranges2(b'ab', b'AB') |
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594 [(1, 2)] |
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595 >>> difflineranges2(b'abcde', b'aBcDe') |
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596 [(2, 2), (4, 4)] |
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597 >>> difflineranges2(b'abcde', b'aBCDe') |
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598 [(2, 4)] |
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599 """ |
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600 ranges = [] |
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601 for lines, kind in mdiff.allblocks(content1, content2): |
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602 firstline, lastline = lines[2:4] |
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603 if kind == b'!' and firstline != lastline: |
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604 ranges.append((firstline + 1, lastline)) |
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605 return ranges |
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606 |
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607 |
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608 def getbasectxs(repo, opts, revstofix): |
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609 """Returns a map of the base contexts for each revision |
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610 |
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611 The base contexts determine which lines are considered modified when we |
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612 attempt to fix just the modified lines in a file. It also determines which |
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613 files we attempt to fix, so it is important to compute this even when |
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614 --whole is used. |
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615 """ |
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616 # The --base flag overrides the usual logic, and we give every revision |
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617 # exactly the set of baserevs that the user specified. |
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618 if opts.get(b'base'): |
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619 baserevs = set(scmutil.revrange(repo, opts.get(b'base'))) |
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620 if not baserevs: |
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621 baserevs = {nullrev} |
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622 basectxs = {repo[rev] for rev in baserevs} |
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623 return {rev: basectxs for rev in revstofix} |
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624 |
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625 # Proceed in topological order so that we can easily determine each |
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626 # revision's baserevs by looking at its parents and their baserevs. |
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627 basectxs = collections.defaultdict(set) |
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628 for rev in sorted(revstofix): |
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629 ctx = repo[rev] |
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630 for pctx in ctx.parents(): |
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631 if pctx.rev() in basectxs: |
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632 basectxs[rev].update(basectxs[pctx.rev()]) |
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633 else: |
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634 basectxs[rev].add(pctx) |
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635 return basectxs |
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636 |
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637 |
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638 def _prefetchfiles(repo, workqueue, basepaths): |
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639 toprefetch = set() |
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640 |
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641 # Prefetch the files that will be fixed. |
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642 for rev, path in workqueue: |
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643 if rev == wdirrev: |
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644 continue |
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645 toprefetch.add((rev, path)) |
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646 |
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647 # Prefetch the base contents for lineranges(). |
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648 for (baserev, fixrev, path), basepath in basepaths.items(): |
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649 toprefetch.add((baserev, basepath)) |
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650 |
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651 if toprefetch: |
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652 scmutil.prefetchfiles( |
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653 repo, |
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654 [ |
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655 (rev, scmutil.matchfiles(repo, [path])) |
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656 for rev, path in toprefetch |
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657 ], |
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658 ) |
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659 |
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660 |
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661 def fixfile(ui, repo, opts, fixers, fixctx, path, basepaths, basectxs): |
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662 """Run any configured fixers that should affect the file in this context |
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663 |
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664 Returns the file content that results from applying the fixers in some order |
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665 starting with the file's content in the fixctx. Fixers that support line |
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666 ranges will affect lines that have changed relative to any of the basectxs |
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667 (i.e. they will only avoid lines that are common to all basectxs). |
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668 |
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669 A fixer tool's stdout will become the file's new content if and only if it |
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670 exits with code zero. The fixer tool's working directory is the repository's |
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671 root. |
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672 """ |
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673 metadata = {} |
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674 newdata = fixctx[path].data() |
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675 for fixername, fixer in pycompat.iteritems(fixers): |
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676 if fixer.affects(opts, fixctx, path): |
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677 ranges = lineranges( |
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678 opts, path, basepaths, basectxs, fixctx, newdata |
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679 ) |
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680 command = fixer.command(ui, path, ranges) |
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681 if command is None: |
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682 continue |
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683 ui.debug(b'subprocess: %s\n' % (command,)) |
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684 proc = subprocess.Popen( |
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685 procutil.tonativestr(command), |
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686 shell=True, |
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687 cwd=procutil.tonativestr(repo.root), |
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688 stdin=subprocess.PIPE, |
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689 stdout=subprocess.PIPE, |
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690 stderr=subprocess.PIPE, |
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691 ) |
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692 stdout, stderr = proc.communicate(newdata) |
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693 if stderr: |
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694 showstderr(ui, fixctx.rev(), fixername, stderr) |
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695 newerdata = stdout |
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696 if fixer.shouldoutputmetadata(): |
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697 try: |
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698 metadatajson, newerdata = stdout.split(b'\0', 1) |
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699 metadata[fixername] = pycompat.json_loads(metadatajson) |
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700 except ValueError: |
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701 ui.warn( |
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702 _(b'ignored invalid output from fixer tool: %s\n') |
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703 % (fixername,) |
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704 ) |
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705 continue |
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706 else: |
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707 metadata[fixername] = None |
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708 if proc.returncode == 0: |
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709 newdata = newerdata |
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710 else: |
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711 if not stderr: |
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712 message = _(b'exited with status %d\n') % (proc.returncode,) |
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713 showstderr(ui, fixctx.rev(), fixername, message) |
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714 checktoolfailureaction( |
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715 ui, |
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716 _(b'no fixes will be applied'), |
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717 hint=_( |
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718 b'use --config fix.failure=continue to apply any ' |
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719 b'successful fixes anyway' |
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720 ), |
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721 ) |
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722 return metadata, newdata |
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723 |
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724 |
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|
725 def showstderr(ui, rev, fixername, stderr): |
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726 """Writes the lines of the stderr string as warnings on the ui |
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|
727 |
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|
728 Uses the revision number and fixername to give more context to each line of |
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|
729 the error message. Doesn't include file names, since those take up a lot of |
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|
730 space and would tend to be included in the error message if they were |
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|
731 relevant. |
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|
732 """ |
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|
733 for line in re.split(b'[\r\n]+', stderr): |
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734 if line: |
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|
735 ui.warn(b'[') |
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736 if rev is None: |
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737 ui.warn(_(b'wdir'), label=b'evolve.rev') |
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738 else: |
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fix: replace str() by b'%d' for formatting integer
Martin von Zweigbergk <martinvonz@google.com>
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|
739 ui.warn(b'%d' % rev, label=b'evolve.rev') |
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740 ui.warn(b'] %s: %s\n' % (fixername, line)) |
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741 |
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742 |
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743 def writeworkingdir(repo, ctx, filedata, replacements): |
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744 """Write new content to the working copy and check out the new p1 if any |
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745 |
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|
746 We check out a new revision if and only if we fixed something in both the |
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747 working directory and its parent revision. This avoids the need for a full |
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748 update/merge, and means that the working directory simply isn't affected |
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|
749 unless the --working-dir flag is given. |
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|
750 |
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|
751 Directly updates the dirstate for the affected files. |
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|
752 """ |
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|
753 for path, data in pycompat.iteritems(filedata): |
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754 fctx = ctx[path] |
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755 fctx.write(data, fctx.flags()) |
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756 if repo.dirstate[path] == b'n': |
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757 repo.dirstate.normallookup(path) |
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|
758 |
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759 oldparentnodes = repo.dirstate.parents() |
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760 newparentnodes = [replacements.get(n, n) for n in oldparentnodes] |
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761 if newparentnodes != oldparentnodes: |
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762 repo.setparents(*newparentnodes) |
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763 |
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764 |
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765 def replacerev(ui, repo, ctx, filedata, replacements): |
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766 """Commit a new revision like the given one, but with file content changes |
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767 |
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|
768 "ctx" is the original revision to be replaced by a modified one. |
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|
769 |
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770 "filedata" is a dict that maps paths to their new file content. All other |
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771 paths will be recreated from the original revision without changes. |
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|
772 "filedata" may contain paths that didn't exist in the original revision; |
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|
773 they will be added. |
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|
774 |
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|
775 "replacements" is a dict that maps a single node to a single node, and it is |
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|
776 updated to indicate the original revision is replaced by the newly created |
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777 one. No entry is added if the replacement's node already exists. |
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|
778 |
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|
779 The new revision has the same parents as the old one, unless those parents |
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780 have already been replaced, in which case those replacements are the parents |
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|
781 of this new revision. Thus, if revisions are replaced in topological order, |
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782 there is no need to rebase them into the original topology later. |
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783 """ |
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784 |
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785 p1rev, p2rev = repo.changelog.parentrevs(ctx.rev()) |
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786 p1ctx, p2ctx = repo[p1rev], repo[p2rev] |
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787 newp1node = replacements.get(p1ctx.node(), p1ctx.node()) |
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788 newp2node = replacements.get(p2ctx.node(), p2ctx.node()) |
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789 |
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790 # We don't want to create a revision that has no changes from the original, |
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|
791 # but we should if the original revision's parent has been replaced. |
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792 # Otherwise, we would produce an orphan that needs no actual human |
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793 # intervention to evolve. We can't rely on commit() to avoid creating the |
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794 # un-needed revision because the extra field added below produces a new hash |
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795 # regardless of file content changes. |
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796 if ( |
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|
797 not filedata |
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798 and p1ctx.node() not in replacements |
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799 and p2ctx.node() not in replacements |
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800 ): |
40570
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|
801 return |
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|
802 |
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|
803 extra = ctx.extra().copy() |
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804 extra[b'fix_source'] = ctx.hex() |
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805 |
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|
806 wctx = context.overlayworkingctx(repo) |
44092
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graftcopies: remove `skip` and `repo` arguments
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parents:
44090
diff
changeset
|
807 wctx.setbase(repo[newp1node]) |
44271
c791ed6a2154
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Martin von Zweigbergk <martinvonz@google.com>
parents:
44129
diff
changeset
|
808 merge.revert_to(ctx, wc=wctx) |
44092
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graftcopies: remove `skip` and `repo` arguments
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|
809 copies.graftcopies(wctx, ctx, ctx.p1()) |
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|
810 |
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|
811 for path in filedata.keys(): |
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812 fctx = ctx[path] |
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813 copysource = fctx.copysource() |
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814 wctx.write(path, filedata[path], flags=fctx.flags()) |
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815 if copysource: |
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816 wctx.markcopied(path, copysource) |
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817 |
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|
818 memctx = wctx.tomemctx( |
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819 text=ctx.description(), |
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|
820 branch=ctx.branch(), |
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|
821 extra=extra, |
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|
822 date=ctx.date(), |
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823 parents=(newp1node, newp2node), |
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824 user=ctx.user(), |
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825 ) |
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826 |
38423
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|
827 sucnode = memctx.commit() |
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|
828 prenode = ctx.node() |
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|
829 if prenode == sucnode: |
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830 ui.debug(b'node %s already existed\n' % (ctx.hex())) |
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|
831 else: |
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|
832 replacements[ctx.node()] = sucnode |
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833 |
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834 |
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|
835 def getfixers(ui): |
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|
836 """Returns a map of configured fixer tools indexed by their names |
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837 |
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|
838 Each value is a Fixer object with methods that implement the behavior of the |
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|
839 fixer's config suboptions. Does not validate the config values. |
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|
840 """ |
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40533
diff
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|
841 fixers = {} |
37183
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|
842 for name in fixernames(ui): |
43219
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fix: make Fixer initialization more explicit for clarity
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parents:
43218
diff
changeset
|
843 enabled = ui.configbool(b'fix', name + b':enabled') |
0101db49606f
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parents:
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diff
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|
844 command = ui.config(b'fix', name + b':command') |
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Martin von Zweigbergk <martinvonz@google.com>
parents:
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diff
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|
845 pattern = ui.config(b'fix', name + b':pattern') |
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fix: make Fixer initialization more explicit for clarity
Martin von Zweigbergk <martinvonz@google.com>
parents:
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diff
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|
846 linerange = ui.config(b'fix', name + b':linerange') |
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Martin von Zweigbergk <martinvonz@google.com>
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847 priority = ui.configint(b'fix', name + b':priority') |
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848 metadata = ui.configbool(b'fix', name + b':metadata') |
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849 skipclean = ui.configbool(b'fix', name + b':skipclean') |
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850 # Don't use a fixer if it has no pattern configured. It would be |
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851 # dangerous to let it affect all files. It would be pointless to let it |
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852 # affect no files. There is no reasonable subset of files to use as the |
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853 # default. |
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854 if command is None: |
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855 ui.warn( |
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856 _(b'fixer tool has no command configuration: %s\n') % (name,) |
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857 ) |
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858 elif pattern is None: |
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859 ui.warn( |
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860 _(b'fixer tool has no pattern configuration: %s\n') % (name,) |
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861 ) |
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862 elif not enabled: |
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863 ui.debug(b'ignoring disabled fixer tool: %s\n' % (name,)) |
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864 else: |
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865 fixers[name] = Fixer( |
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866 command, pattern, linerange, priority, metadata, skipclean |
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867 ) |
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868 return collections.OrderedDict( |
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869 sorted(fixers.items(), key=lambda item: item[1]._priority, reverse=True) |
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870 ) |
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871 |
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872 |
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873 def fixernames(ui): |
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874 """Returns the names of [fix] config options that have suboptions""" |
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875 names = set() |
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876 for k, v in ui.configitems(b'fix'): |
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877 if b':' in k: |
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878 names.add(k.split(b':', 1)[0]) |
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879 return names |
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880 |
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881 |
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882 class Fixer(object): |
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883 """Wraps the raw config values for a fixer with methods""" |
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884 |
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885 def __init__( |
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886 self, command, pattern, linerange, priority, metadata, skipclean |
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887 ): |
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888 self._command = command |
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889 self._pattern = pattern |
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890 self._linerange = linerange |
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891 self._priority = priority |
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892 self._metadata = metadata |
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893 self._skipclean = skipclean |
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894 |
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895 def affects(self, opts, fixctx, path): |
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896 """Should this fixer run on the file at the given path and context?""" |
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897 repo = fixctx.repo() |
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898 matcher = matchmod.match( |
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899 repo.root, repo.root, [self._pattern], ctx=fixctx |
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900 ) |
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901 return matcher(path) |
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902 |
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903 def shouldoutputmetadata(self): |
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904 """Should the stdout of this fixer start with JSON and a null byte?""" |
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905 return self._metadata |
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906 |
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907 def command(self, ui, path, ranges): |
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908 """A shell command to use to invoke this fixer on the given file/lines |
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909 |
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910 May return None if there is no appropriate command to run for the given |
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911 parameters. |
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912 """ |
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913 expand = cmdutil.rendercommandtemplate |
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914 parts = [ |
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915 expand( |
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916 ui, |
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917 self._command, |
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918 {b'rootpath': path, b'basename': os.path.basename(path)}, |
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919 ) |
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920 ] |
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921 if self._linerange: |
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922 if self._skipclean and not ranges: |
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923 # No line ranges to fix, so don't run the fixer. |
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924 return None |
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925 for first, last in ranges: |
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926 parts.append( |
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927 expand( |
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928 ui, self._linerange, {b'first': first, b'last': last} |
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929 ) |
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930 ) |
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931 return b' '.join(parts) |