Mercurial > hg
annotate hgext/fix.py @ 45666:f6811e5bd994
changing-files: add clean computation of changed files for roots
The `files` field is not reliable, so we need to compute things from scratch. We
start with the simplest case root changesets. In the beginning they was nothing,
then user said "let there be files" and there were added files.
Differential Revision: https://phab.mercurial-scm.org/D9126
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 29 Sep 2020 22:38:08 +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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parents:
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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: |
43501
b2f95f9d3588
fix: replace str() by b'%d' for formatting integer
Martin von Zweigbergk <martinvonz@google.com>
parents:
43380
diff
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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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Gregory Szorc <gregory.szorc@gmail.com>
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43087
diff
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|
753 for path, data in pycompat.iteritems(filedata): |
37183
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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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diff
changeset
|
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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parents:
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|
806 wctx = context.overlayworkingctx(repo) |
44092
833210fbd900
graftcopies: remove `skip` and `repo` arguments
Martin von Zweigbergk <martinvonz@google.com>
parents:
44090
diff
changeset
|
807 wctx.setbase(repo[newp1node]) |
44271
c791ed6a2154
merge: introduce a revert_to() for that use-case
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
Martin von Zweigbergk <martinvonz@google.com>
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diff
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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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diff
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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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43936
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|
817 |
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|
818 memctx = wctx.tomemctx( |
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parents:
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|
819 text=ctx.description(), |
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|
820 branch=ctx.branch(), |
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|
821 extra=extra, |
38423
32fba6fe893d
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|
822 date=ctx.date(), |
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diff
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|
823 parents=(newp1node, newp2node), |
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43936
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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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diff
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|
828 prenode = ctx.node() |
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diff
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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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diff
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|
838 Each value is a Fixer object with methods that implement the behavior of the |
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diff
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|
839 fixer's config suboptions. Does not validate the config values. |
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diff
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|
840 """ |
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Danny Hooper <hooper@google.com>
parents:
40533
diff
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|
841 fixers = {} |
37183
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diff
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|
842 for name in fixernames(ui): |
43219
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fix: make Fixer initialization more explicit for clarity
Martin von Zweigbergk <martinvonz@google.com>
parents:
43218
diff
changeset
|
843 enabled = ui.configbool(b'fix', name + b':enabled') |
0101db49606f
fix: make Fixer initialization more explicit for clarity
Martin von Zweigbergk <martinvonz@google.com>
parents:
43218
diff
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|
844 command = ui.config(b'fix', name + b':command') |
0101db49606f
fix: make Fixer initialization more explicit for clarity
Martin von Zweigbergk <martinvonz@google.com>
parents:
43218
diff
changeset
|
845 pattern = ui.config(b'fix', name + b':pattern') |
0101db49606f
fix: make Fixer initialization more explicit for clarity
Martin von Zweigbergk <martinvonz@google.com>
parents:
43218
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846 linerange = ui.config(b'fix', name + b':linerange') |
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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) |