Mercurial > hg
annotate hgext/fix.py @ 43087:66f2cc210a29
py3: manually import pycompat.setattr where it is needed
Continuing to eliminate the implicit import of symbols in the
Python 3 source transformer so we can eliminate it.
Differential Revision: https://phab.mercurial-scm.org/D7007
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sun, 06 Oct 2019 14:58:42 -0400 |
parents | 687b865b95ad |
children | 649d3ac37a12 |
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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. If there are file |
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50 arguments to :hg:`fix`, the intersection of these patterns is used. |
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51 |
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52 There is also a configurable limit for the maximum size of file that will be |
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53 processed by :hg:`fix`:: |
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54 |
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55 [fix] |
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56 maxfilesize = 2MB |
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57 |
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58 Normally, execution of configured tools will continue after a failure (indicated |
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59 by a non-zero exit status). It can also be configured to abort after the first |
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60 such failure, so that no files will be affected if any tool fails. This abort |
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61 will also cause :hg:`fix` to exit with a non-zero status:: |
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62 |
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63 [fix] |
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64 failure = abort |
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65 |
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66 When multiple tools are configured to affect a file, they execute in an order |
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67 defined by the :priority suboption. The priority suboption has a default value |
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68 of zero for each tool. Tools are executed in order of descending priority. The |
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69 execution order of tools with equal priority is unspecified. For example, you |
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70 could use the 'sort' and 'head' utilities to keep only the 10 smallest numbers |
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71 in a text file by ensuring that 'sort' runs before 'head':: |
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72 |
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73 [fix] |
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74 sort:command = sort -n |
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75 head:command = head -n 10 |
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76 sort:pattern = numbers.txt |
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77 head:pattern = numbers.txt |
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78 sort:priority = 2 |
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79 head:priority = 1 |
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80 |
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81 To account for changes made by each tool, the line numbers used for incremental |
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82 formatting are recomputed before executing the next tool. So, each tool may see |
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83 different values for the arguments added by the :linerange suboption. |
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84 |
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85 Each fixer tool is allowed to return some metadata in addition to the fixed file |
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86 content. The metadata must be placed before the file content on stdout, |
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87 separated from the file content by a zero byte. The metadata is parsed as a JSON |
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88 value (so, it should be UTF-8 encoded and contain no zero bytes). A fixer tool |
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89 is expected to produce this metadata encoding if and only if the :metadata |
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90 suboption is true:: |
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91 |
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92 [fix] |
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93 tool:command = tool --prepend-json-metadata |
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94 tool:metadata = true |
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95 |
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96 The metadata values are passed to hooks, which can be used to print summaries or |
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97 perform other post-fixing work. The supported hooks are:: |
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98 |
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99 "postfixfile" |
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100 Run once for each file in each revision where any fixer tools made changes |
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101 to the file content. Provides "$HG_REV" and "$HG_PATH" to identify the file, |
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102 and "$HG_METADATA" with a map of fixer names to metadata values from fixer |
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103 tools that affected the file. Fixer tools that didn't affect the file have a |
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104 valueof None. Only fixer tools that executed are present in the metadata. |
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105 |
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106 "postfix" |
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107 Run once after all files and revisions have been handled. Provides |
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108 "$HG_REPLACEMENTS" with information about what revisions were created and |
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109 made obsolete. Provides a boolean "$HG_WDIRWRITTEN" to indicate whether any |
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110 files in the working copy were updated. Provides a list "$HG_METADATA" |
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111 mapping fixer tool names to lists of metadata values returned from |
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112 executions that modified a file. This aggregates the same metadata |
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113 previously passed to the "postfixfile" hook. |
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114 |
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115 Fixer tools are run the in repository's root directory. This allows them to read |
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116 configuration files from the working copy, or even write to the working copy. |
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117 The working copy is not updated to match the revision being fixed. In fact, |
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118 several revisions may be fixed in parallel. Writes to the working copy are not |
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119 amended into the revision being fixed; fixer tools should always write fixed |
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120 file content back to stdout as documented above. |
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121 """ |
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122 |
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123 from __future__ import absolute_import |
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124 |
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125 import collections |
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126 import itertools |
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127 import json |
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128 import os |
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129 import re |
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130 import subprocess |
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131 |
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132 from mercurial.i18n import _ |
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133 from mercurial.node import nullrev |
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134 from mercurial.node import wdirrev |
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135 from mercurial.pycompat import setattr |
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136 |
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137 from mercurial.utils import ( |
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138 procutil, |
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139 stringutil, |
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140 ) |
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141 |
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142 from mercurial import ( |
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143 cmdutil, |
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144 context, |
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145 copies, |
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146 error, |
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147 mdiff, |
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148 merge, |
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149 obsolete, |
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150 pycompat, |
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151 registrar, |
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152 scmutil, |
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153 util, |
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154 worker, |
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155 ) |
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156 |
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157 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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158 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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159 # be specifying the version(s) of Mercurial they are tested with, or |
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160 # leave the attribute unspecified. |
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161 testedwith = b'ships-with-hg-core' |
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162 |
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163 cmdtable = {} |
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164 command = registrar.command(cmdtable) |
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165 |
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166 configtable = {} |
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167 configitem = registrar.configitem(configtable) |
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168 |
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169 # Register the suboptions allowed for each configured fixer, and default values. |
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170 FIXER_ATTRS = { |
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171 b'command': None, |
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172 b'linerange': None, |
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173 b'pattern': None, |
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174 b'priority': 0, |
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175 b'metadata': b'false', |
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176 b'skipclean': b'true', |
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177 b'enabled': b'true', |
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178 } |
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179 |
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180 for key, default in FIXER_ATTRS.items(): |
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181 configitem(b'fix', b'.*(:%s)?' % key, default=default, generic=True) |
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182 |
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183 # A good default size allows most source code files to be fixed, but avoids |
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184 # letting fixer tools choke on huge inputs, which could be surprising to the |
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185 # user. |
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186 configitem(b'fix', b'maxfilesize', default=b'2MB') |
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187 |
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188 # Allow fix commands to exit non-zero if an executed fixer tool exits non-zero. |
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189 # This helps users do shell scripts that stop when a fixer tool signals a |
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190 # problem. |
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191 configitem(b'fix', b'failure', default=b'continue') |
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192 |
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193 |
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194 def checktoolfailureaction(ui, message, hint=None): |
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195 """Abort with 'message' if fix.failure=abort""" |
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196 action = ui.config(b'fix', b'failure') |
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197 if action not in (b'continue', b'abort'): |
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198 raise error.Abort( |
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199 _(b'unknown fix.failure action: %s') % (action,), |
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200 hint=_(b'use "continue" or "abort"'), |
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201 ) |
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202 if action == b'abort': |
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203 raise error.Abort(message, hint=hint) |
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204 |
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205 |
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206 allopt = (b'', b'all', False, _(b'fix all non-public non-obsolete revisions')) |
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207 baseopt = ( |
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208 b'', |
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209 b'base', |
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210 [], |
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211 _( |
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212 b'revisions to diff against (overrides automatic ' |
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213 b'selection, and applies to every revision being ' |
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214 b'fixed)' |
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215 ), |
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216 _(b'REV'), |
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217 ) |
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218 revopt = (b'r', b'rev', [], _(b'revisions to fix'), _(b'REV')) |
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219 wdiropt = (b'w', b'working-dir', False, _(b'fix the working directory')) |
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220 wholeopt = (b'', b'whole', False, _(b'always fix every line of a file')) |
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221 usage = _(b'[OPTION]... [FILE]...') |
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222 |
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223 |
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224 @command( |
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225 b'fix', |
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226 [allopt, baseopt, revopt, wdiropt, wholeopt], |
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227 usage, |
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228 helpcategory=command.CATEGORY_FILE_CONTENTS, |
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229 ) |
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230 def fix(ui, repo, *pats, **opts): |
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231 """rewrite file content in changesets or working directory |
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232 |
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233 Runs any configured tools to fix the content of files. Only affects files |
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234 with changes, unless file arguments are provided. Only affects changed lines |
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235 of files, unless the --whole flag is used. Some tools may always affect the |
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236 whole file regardless of --whole. |
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237 |
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238 If revisions are specified with --rev, those revisions will be checked, and |
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239 they may be replaced with new revisions that have fixed file content. It is |
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240 desirable to specify all descendants of each specified revision, so that the |
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241 fixes propagate to the descendants. If all descendants are fixed at the same |
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242 time, no merging, rebasing, or evolution will be required. |
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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. If the checked-out revision is also fixed, the working |
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246 directory will update to the replacement revision. |
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247 |
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248 When determining what lines of each file to fix at each revision, the whole |
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249 set of revisions being fixed is considered, so that fixes to earlier |
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250 revisions are not forgotten in later ones. The --base flag can be used to |
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251 override this default behavior, though it is not usually desirable to do so. |
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252 """ |
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253 opts = pycompat.byteskwargs(opts) |
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254 if opts[b'all']: |
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255 if opts[b'rev']: |
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256 raise error.Abort(_(b'cannot specify both "--rev" and "--all"')) |
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257 opts[b'rev'] = [b'not public() and not obsolete()'] |
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258 opts[b'working_dir'] = True |
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259 with repo.wlock(), repo.lock(), repo.transaction(b'fix'): |
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260 revstofix = getrevstofix(ui, repo, opts) |
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261 basectxs = getbasectxs(repo, opts, revstofix) |
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262 workqueue, numitems = getworkqueue( |
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263 ui, repo, pats, opts, revstofix, basectxs |
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264 ) |
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265 fixers = getfixers(ui) |
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266 |
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267 # There are no data dependencies between the workers fixing each file |
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268 # revision, so we can use all available parallelism. |
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269 def getfixes(items): |
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270 for rev, path in items: |
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271 ctx = repo[rev] |
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272 olddata = ctx[path].data() |
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273 metadata, newdata = fixfile( |
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274 ui, repo, opts, fixers, ctx, path, basectxs[rev] |
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275 ) |
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276 # Don't waste memory/time passing unchanged content back, but |
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277 # produce one result per item either way. |
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278 yield ( |
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279 rev, |
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280 path, |
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281 metadata, |
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282 newdata if newdata != olddata else None, |
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283 ) |
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284 |
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285 results = worker.worker( |
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286 ui, 1.0, getfixes, tuple(), workqueue, threadsafe=False |
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287 ) |
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288 |
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289 # We have to hold on to the data for each successor revision in memory |
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290 # until all its parents are committed. We ensure this by committing and |
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291 # freeing memory for the revisions in some topological order. This |
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292 # leaves a little bit of memory efficiency on the table, but also makes |
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293 # the tests deterministic. It might also be considered a feature since |
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294 # it makes the results more easily reproducible. |
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295 filedata = collections.defaultdict(dict) |
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296 aggregatemetadata = collections.defaultdict(list) |
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297 replacements = {} |
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298 wdirwritten = False |
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299 commitorder = sorted(revstofix, reverse=True) |
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300 with ui.makeprogress( |
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301 topic=_(b'fixing'), unit=_(b'files'), total=sum(numitems.values()) |
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302 ) as progress: |
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303 for rev, path, filerevmetadata, newdata in results: |
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304 progress.increment(item=path) |
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305 for fixername, fixermetadata in filerevmetadata.items(): |
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306 aggregatemetadata[fixername].append(fixermetadata) |
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307 if newdata is not None: |
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308 filedata[rev][path] = newdata |
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309 hookargs = { |
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310 b'rev': rev, |
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311 b'path': path, |
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312 b'metadata': filerevmetadata, |
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313 } |
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314 repo.hook( |
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315 b'postfixfile', |
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316 throw=False, |
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317 **pycompat.strkwargs(hookargs) |
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318 ) |
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319 numitems[rev] -= 1 |
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320 # Apply the fixes for this and any other revisions that are |
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321 # ready and sitting at the front of the queue. Using a loop here |
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322 # prevents the queue from being blocked by the first revision to |
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323 # be ready out of order. |
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324 while commitorder and not numitems[commitorder[-1]]: |
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325 rev = commitorder.pop() |
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326 ctx = repo[rev] |
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327 if rev == wdirrev: |
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328 writeworkingdir(repo, ctx, filedata[rev], replacements) |
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329 wdirwritten = bool(filedata[rev]) |
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330 else: |
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331 replacerev(ui, repo, ctx, filedata[rev], replacements) |
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332 del filedata[rev] |
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333 |
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334 cleanup(repo, replacements, wdirwritten) |
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335 hookargs = { |
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336 b'replacements': replacements, |
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337 b'wdirwritten': wdirwritten, |
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338 b'metadata': aggregatemetadata, |
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339 } |
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340 repo.hook(b'postfix', throw=True, **pycompat.strkwargs(hookargs)) |
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341 |
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342 |
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343 def cleanup(repo, replacements, wdirwritten): |
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344 """Calls scmutil.cleanupnodes() with the given replacements. |
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345 |
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346 "replacements" is a dict from nodeid to nodeid, with one key and one value |
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347 for every revision that was affected by fixing. This is slightly different |
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348 from cleanupnodes(). |
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349 |
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350 "wdirwritten" is a bool which tells whether the working copy was affected by |
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351 fixing, since it has no entry in "replacements". |
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352 |
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353 Useful as a hook point for extending "hg fix" with output summarizing the |
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354 effects of the command, though we choose not to output anything here. |
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355 """ |
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356 replacements = {prec: [succ] for prec, succ in replacements.iteritems()} |
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357 scmutil.cleanupnodes(repo, replacements, b'fix', fixphase=True) |
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358 |
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359 |
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360 def getworkqueue(ui, repo, pats, opts, revstofix, basectxs): |
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361 """"Constructs the list of files to be fixed at specific revisions |
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362 |
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363 It is up to the caller how to consume the work items, and the only |
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364 dependence between them is that replacement revisions must be committed in |
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365 topological order. Each work item represents a file in the working copy or |
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366 in some revision that should be fixed and written back to the working copy |
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367 or into a replacement revision. |
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368 |
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369 Work items for the same revision are grouped together, so that a worker |
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370 pool starting with the first N items in parallel is likely to finish the |
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371 first revision's work before other revisions. This can allow us to write |
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372 the result to disk and reduce memory footprint. At time of writing, the |
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373 partition strategy in worker.py seems favorable to this. We also sort the |
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374 items by ascending revision number to match the order in which we commit |
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375 the fixes later. |
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376 """ |
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377 workqueue = [] |
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378 numitems = collections.defaultdict(int) |
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379 maxfilesize = ui.configbytes(b'fix', b'maxfilesize') |
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380 for rev in sorted(revstofix): |
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381 fixctx = repo[rev] |
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382 match = scmutil.match(fixctx, pats, opts) |
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383 for path in sorted( |
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384 pathstofix(ui, repo, pats, opts, match, basectxs[rev], fixctx) |
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385 ): |
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386 fctx = fixctx[path] |
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387 if fctx.islink(): |
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388 continue |
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389 if fctx.size() > maxfilesize: |
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390 ui.warn( |
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391 _(b'ignoring file larger than %s: %s\n') |
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392 % (util.bytecount(maxfilesize), path) |
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393 ) |
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394 continue |
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395 workqueue.append((rev, path)) |
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396 numitems[rev] += 1 |
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397 return workqueue, numitems |
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398 |
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399 |
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400 def getrevstofix(ui, repo, opts): |
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401 """Returns the set of revision numbers that should be fixed""" |
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402 revs = set(scmutil.revrange(repo, opts[b'rev'])) |
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403 for rev in revs: |
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404 checkfixablectx(ui, repo, repo[rev]) |
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405 if revs: |
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406 cmdutil.checkunfinished(repo) |
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407 checknodescendants(repo, revs) |
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408 if opts.get(b'working_dir'): |
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409 revs.add(wdirrev) |
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410 if list(merge.mergestate.read(repo).unresolved()): |
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411 raise error.Abort(b'unresolved conflicts', hint=b"use 'hg resolve'") |
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412 if not revs: |
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413 raise error.Abort( |
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414 b'no changesets specified', hint=b'use --rev or --working-dir' |
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415 ) |
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416 return revs |
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417 |
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418 |
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419 def checknodescendants(repo, revs): |
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420 if not obsolete.isenabled(repo, obsolete.allowunstableopt) and repo.revs( |
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421 b'(%ld::) - (%ld)', revs, revs |
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422 ): |
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423 raise error.Abort( |
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424 _(b'can only fix a changeset together ' b'with all its descendants') |
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425 ) |
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426 |
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427 |
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428 def checkfixablectx(ui, repo, ctx): |
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429 """Aborts if the revision shouldn't be replaced with a fixed one.""" |
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430 if not ctx.mutable(): |
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431 raise error.Abort( |
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432 b'can\'t fix immutable changeset %s' |
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433 % (scmutil.formatchangeid(ctx),) |
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434 ) |
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435 if ctx.obsolete(): |
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436 # It would be better to actually check if the revision has a successor. |
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437 allowdivergence = ui.configbool( |
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438 b'experimental', b'evolution.allowdivergence' |
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439 ) |
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440 if not allowdivergence: |
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441 raise error.Abort( |
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442 b'fixing obsolete revision could cause divergence' |
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443 ) |
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444 |
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445 |
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446 def pathstofix(ui, repo, pats, opts, match, basectxs, fixctx): |
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447 """Returns the set of files that should be fixed in a context |
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448 |
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449 The result depends on the base contexts; we include any file that has |
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450 changed relative to any of the base contexts. Base contexts should be |
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451 ancestors of the context being fixed. |
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452 """ |
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453 files = set() |
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454 for basectx in basectxs: |
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455 stat = basectx.status( |
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456 fixctx, match=match, listclean=bool(pats), listunknown=bool(pats) |
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457 ) |
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458 files.update( |
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459 set( |
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460 itertools.chain( |
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461 stat.added, stat.modified, stat.clean, stat.unknown |
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462 ) |
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463 ) |
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464 ) |
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465 return files |
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466 |
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467 |
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468 def lineranges(opts, path, basectxs, fixctx, content2): |
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469 """Returns the set of line ranges that should be fixed in a file |
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470 |
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471 Of the form [(10, 20), (30, 40)]. |
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472 |
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473 This depends on the given base contexts; we must consider lines that have |
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474 changed versus any of the base contexts, and whether the file has been |
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475 renamed versus any of them. |
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476 |
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477 Another way to understand this is that we exclude line ranges that are |
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478 common to the file in all base contexts. |
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479 """ |
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480 if opts.get(b'whole'): |
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481 # Return a range containing all lines. Rely on the diff implementation's |
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482 # idea of how many lines are in the file, instead of reimplementing it. |
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483 return difflineranges(b'', content2) |
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484 |
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485 rangeslist = [] |
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486 for basectx in basectxs: |
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487 basepath = copies.pathcopies(basectx, fixctx).get(path, path) |
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488 if basepath in basectx: |
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489 content1 = basectx[basepath].data() |
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490 else: |
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491 content1 = b'' |
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492 rangeslist.extend(difflineranges(content1, content2)) |
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493 return unionranges(rangeslist) |
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494 |
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495 |
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496 def unionranges(rangeslist): |
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497 """Return the union of some closed intervals |
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498 |
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499 >>> unionranges([]) |
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500 [] |
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501 >>> unionranges([(1, 100)]) |
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502 [(1, 100)] |
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503 >>> unionranges([(1, 100), (1, 100)]) |
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504 [(1, 100)] |
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505 >>> unionranges([(1, 100), (2, 100)]) |
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506 [(1, 100)] |
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507 >>> unionranges([(1, 99), (1, 100)]) |
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508 [(1, 100)] |
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509 >>> unionranges([(1, 100), (40, 60)]) |
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510 [(1, 100)] |
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511 >>> unionranges([(1, 49), (50, 100)]) |
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512 [(1, 100)] |
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513 >>> unionranges([(1, 48), (50, 100)]) |
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514 [(1, 48), (50, 100)] |
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515 >>> unionranges([(1, 2), (3, 4), (5, 6)]) |
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516 [(1, 6)] |
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517 """ |
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518 rangeslist = sorted(set(rangeslist)) |
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519 unioned = [] |
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520 if rangeslist: |
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521 unioned, rangeslist = [rangeslist[0]], rangeslist[1:] |
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522 for a, b in rangeslist: |
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523 c, d = unioned[-1] |
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524 if a > d + 1: |
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525 unioned.append((a, b)) |
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526 else: |
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527 unioned[-1] = (c, max(b, d)) |
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528 return unioned |
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529 |
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530 |
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531 def difflineranges(content1, content2): |
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532 """Return list of line number ranges in content2 that differ from content1. |
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533 |
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534 Line numbers are 1-based. The numbers are the first and last line contained |
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535 in the range. Single-line ranges have the same line number for the first and |
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536 last line. Excludes any empty ranges that result from lines that are only |
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537 present in content1. Relies on mdiff's idea of where the line endings are in |
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538 the string. |
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539 |
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540 >>> from mercurial import pycompat |
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541 >>> lines = lambda s: b'\\n'.join([c for c in pycompat.iterbytestr(s)]) |
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542 >>> difflineranges2 = lambda a, b: difflineranges(lines(a), lines(b)) |
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543 >>> difflineranges2(b'', b'') |
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544 [] |
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545 >>> difflineranges2(b'a', b'') |
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546 [] |
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547 >>> difflineranges2(b'', b'A') |
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548 [(1, 1)] |
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549 >>> difflineranges2(b'a', b'a') |
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550 [] |
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551 >>> difflineranges2(b'a', b'A') |
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552 [(1, 1)] |
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553 >>> difflineranges2(b'ab', b'') |
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554 [] |
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555 >>> difflineranges2(b'', b'AB') |
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556 [(1, 2)] |
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557 >>> difflineranges2(b'abc', b'ac') |
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558 [] |
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559 >>> difflineranges2(b'ab', b'aCb') |
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560 [(2, 2)] |
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561 >>> difflineranges2(b'abc', b'aBc') |
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562 [(2, 2)] |
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563 >>> difflineranges2(b'ab', b'AB') |
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564 [(1, 2)] |
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565 >>> difflineranges2(b'abcde', b'aBcDe') |
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566 [(2, 2), (4, 4)] |
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567 >>> difflineranges2(b'abcde', b'aBCDe') |
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568 [(2, 4)] |
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569 """ |
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570 ranges = [] |
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571 for lines, kind in mdiff.allblocks(content1, content2): |
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572 firstline, lastline = lines[2:4] |
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573 if kind == b'!' and firstline != lastline: |
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574 ranges.append((firstline + 1, lastline)) |
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575 return ranges |
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|
576 |
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577 |
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578 def getbasectxs(repo, opts, revstofix): |
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579 """Returns a map of the base contexts for each revision |
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580 |
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581 The base contexts determine which lines are considered modified when we |
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582 attempt to fix just the modified lines in a file. It also determines which |
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583 files we attempt to fix, so it is important to compute this even when |
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584 --whole is used. |
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585 """ |
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586 # The --base flag overrides the usual logic, and we give every revision |
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587 # exactly the set of baserevs that the user specified. |
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588 if opts.get(b'base'): |
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589 baserevs = set(scmutil.revrange(repo, opts.get(b'base'))) |
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590 if not baserevs: |
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591 baserevs = {nullrev} |
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592 basectxs = {repo[rev] for rev in baserevs} |
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593 return {rev: basectxs for rev in revstofix} |
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594 |
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|
595 # Proceed in topological order so that we can easily determine each |
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596 # revision's baserevs by looking at its parents and their baserevs. |
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597 basectxs = collections.defaultdict(set) |
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598 for rev in sorted(revstofix): |
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599 ctx = repo[rev] |
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600 for pctx in ctx.parents(): |
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601 if pctx.rev() in basectxs: |
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602 basectxs[rev].update(basectxs[pctx.rev()]) |
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603 else: |
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604 basectxs[rev].add(pctx) |
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|
605 return basectxs |
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606 |
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|
607 |
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608 def fixfile(ui, repo, opts, fixers, fixctx, path, basectxs): |
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609 """Run any configured fixers that should affect the file in this context |
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|
610 |
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611 Returns the file content that results from applying the fixers in some order |
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|
612 starting with the file's content in the fixctx. Fixers that support line |
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613 ranges will affect lines that have changed relative to any of the basectxs |
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614 (i.e. they will only avoid lines that are common to all basectxs). |
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615 |
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616 A fixer tool's stdout will become the file's new content if and only if it |
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617 exits with code zero. The fixer tool's working directory is the repository's |
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618 root. |
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619 """ |
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620 metadata = {} |
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621 newdata = fixctx[path].data() |
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622 for fixername, fixer in fixers.iteritems(): |
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623 if fixer.affects(opts, fixctx, path): |
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624 ranges = lineranges(opts, path, basectxs, fixctx, newdata) |
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625 command = fixer.command(ui, path, ranges) |
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626 if command is None: |
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627 continue |
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628 ui.debug(b'subprocess: %s\n' % (command,)) |
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629 proc = subprocess.Popen( |
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630 procutil.tonativestr(command), |
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631 shell=True, |
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632 cwd=repo.root, |
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633 stdin=subprocess.PIPE, |
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634 stdout=subprocess.PIPE, |
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635 stderr=subprocess.PIPE, |
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636 ) |
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637 stdout, stderr = proc.communicate(newdata) |
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638 if stderr: |
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639 showstderr(ui, fixctx.rev(), fixername, stderr) |
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640 newerdata = stdout |
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641 if fixer.shouldoutputmetadata(): |
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642 try: |
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643 metadatajson, newerdata = stdout.split(b'\0', 1) |
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644 metadata[fixername] = json.loads(metadatajson) |
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645 except ValueError: |
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646 ui.warn( |
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647 _(b'ignored invalid output from fixer tool: %s\n') |
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648 % (fixername,) |
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649 ) |
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650 continue |
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651 else: |
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652 metadata[fixername] = None |
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653 if proc.returncode == 0: |
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654 newdata = newerdata |
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655 else: |
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656 if not stderr: |
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657 message = _(b'exited with status %d\n') % (proc.returncode,) |
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658 showstderr(ui, fixctx.rev(), fixername, message) |
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659 checktoolfailureaction( |
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660 ui, |
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661 _(b'no fixes will be applied'), |
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662 hint=_( |
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663 b'use --config fix.failure=continue to apply any ' |
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664 b'successful fixes anyway' |
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665 ), |
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666 ) |
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667 return metadata, newdata |
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668 |
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669 |
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670 def showstderr(ui, rev, fixername, stderr): |
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671 """Writes the lines of the stderr string as warnings on the ui |
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672 |
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673 Uses the revision number and fixername to give more context to each line of |
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674 the error message. Doesn't include file names, since those take up a lot of |
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675 space and would tend to be included in the error message if they were |
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676 relevant. |
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677 """ |
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678 for line in re.split(b'[\r\n]+', stderr): |
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679 if line: |
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680 ui.warn(b'[') |
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681 if rev is None: |
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682 ui.warn(_(b'wdir'), label=b'evolve.rev') |
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683 else: |
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684 ui.warn((str(rev)), label=b'evolve.rev') |
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685 ui.warn(b'] %s: %s\n' % (fixername, line)) |
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686 |
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687 |
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688 def writeworkingdir(repo, ctx, filedata, replacements): |
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689 """Write new content to the working copy and check out the new p1 if any |
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690 |
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691 We check out a new revision if and only if we fixed something in both the |
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692 working directory and its parent revision. This avoids the need for a full |
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693 update/merge, and means that the working directory simply isn't affected |
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694 unless the --working-dir flag is given. |
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695 |
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696 Directly updates the dirstate for the affected files. |
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697 """ |
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698 for path, data in filedata.iteritems(): |
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699 fctx = ctx[path] |
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700 fctx.write(data, fctx.flags()) |
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701 if repo.dirstate[path] == b'n': |
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702 repo.dirstate.normallookup(path) |
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703 |
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704 oldparentnodes = repo.dirstate.parents() |
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705 newparentnodes = [replacements.get(n, n) for n in oldparentnodes] |
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706 if newparentnodes != oldparentnodes: |
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707 repo.setparents(*newparentnodes) |
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708 |
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709 |
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710 def replacerev(ui, repo, ctx, filedata, replacements): |
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711 """Commit a new revision like the given one, but with file content changes |
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712 |
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713 "ctx" is the original revision to be replaced by a modified one. |
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714 |
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715 "filedata" is a dict that maps paths to their new file content. All other |
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716 paths will be recreated from the original revision without changes. |
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717 "filedata" may contain paths that didn't exist in the original revision; |
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718 they will be added. |
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719 |
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720 "replacements" is a dict that maps a single node to a single node, and it is |
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721 updated to indicate the original revision is replaced by the newly created |
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722 one. No entry is added if the replacement's node already exists. |
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723 |
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724 The new revision has the same parents as the old one, unless those parents |
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725 have already been replaced, in which case those replacements are the parents |
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726 of this new revision. Thus, if revisions are replaced in topological order, |
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727 there is no need to rebase them into the original topology later. |
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728 """ |
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729 |
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730 p1rev, p2rev = repo.changelog.parentrevs(ctx.rev()) |
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731 p1ctx, p2ctx = repo[p1rev], repo[p2rev] |
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732 newp1node = replacements.get(p1ctx.node(), p1ctx.node()) |
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733 newp2node = replacements.get(p2ctx.node(), p2ctx.node()) |
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734 |
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735 # We don't want to create a revision that has no changes from the original, |
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736 # but we should if the original revision's parent has been replaced. |
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737 # Otherwise, we would produce an orphan that needs no actual human |
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738 # intervention to evolve. We can't rely on commit() to avoid creating the |
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739 # un-needed revision because the extra field added below produces a new hash |
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740 # regardless of file content changes. |
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741 if ( |
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742 not filedata |
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743 and p1ctx.node() not in replacements |
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744 and p2ctx.node() not in replacements |
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745 ): |
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746 return |
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747 |
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748 def filectxfn(repo, memctx, path): |
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749 if path not in ctx: |
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750 return None |
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751 fctx = ctx[path] |
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752 copysource = fctx.copysource() |
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753 return context.memfilectx( |
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754 repo, |
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755 memctx, |
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756 path=fctx.path(), |
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757 data=filedata.get(path, fctx.data()), |
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758 islink=fctx.islink(), |
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759 isexec=fctx.isexec(), |
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760 copysource=copysource, |
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761 ) |
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762 |
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763 extra = ctx.extra().copy() |
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764 extra[b'fix_source'] = ctx.hex() |
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765 |
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766 memctx = context.memctx( |
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767 repo, |
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768 parents=(newp1node, newp2node), |
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769 text=ctx.description(), |
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770 files=set(ctx.files()) | set(filedata.keys()), |
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771 filectxfn=filectxfn, |
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772 user=ctx.user(), |
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773 date=ctx.date(), |
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774 extra=extra, |
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775 branch=ctx.branch(), |
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776 editor=None, |
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777 ) |
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778 sucnode = memctx.commit() |
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779 prenode = ctx.node() |
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780 if prenode == sucnode: |
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781 ui.debug(b'node %s already existed\n' % (ctx.hex())) |
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782 else: |
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783 replacements[ctx.node()] = sucnode |
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784 |
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785 |
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786 def getfixers(ui): |
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787 """Returns a map of configured fixer tools indexed by their names |
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788 |
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789 Each value is a Fixer object with methods that implement the behavior of the |
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790 fixer's config suboptions. Does not validate the config values. |
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791 """ |
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792 fixers = {} |
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793 for name in fixernames(ui): |
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794 fixers[name] = Fixer() |
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795 attrs = ui.configsuboptions(b'fix', name)[1] |
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796 for key, default in FIXER_ATTRS.items(): |
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797 setattr( |
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798 fixers[name], |
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799 pycompat.sysstr(b'_' + key), |
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800 attrs.get(key, default), |
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801 ) |
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802 fixers[name]._priority = int(fixers[name]._priority) |
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803 fixers[name]._metadata = stringutil.parsebool(fixers[name]._metadata) |
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804 fixers[name]._skipclean = stringutil.parsebool(fixers[name]._skipclean) |
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805 fixers[name]._enabled = stringutil.parsebool(fixers[name]._enabled) |
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806 # Don't use a fixer if it has no pattern configured. It would be |
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807 # dangerous to let it affect all files. It would be pointless to let it |
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808 # affect no files. There is no reasonable subset of files to use as the |
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809 # default. |
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810 if fixers[name]._pattern is None: |
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811 ui.warn( |
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812 _(b'fixer tool has no pattern configuration: %s\n') % (name,) |
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813 ) |
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814 del fixers[name] |
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815 elif not fixers[name]._enabled: |
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816 ui.debug(b'ignoring disabled fixer tool: %s\n' % (name,)) |
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817 del fixers[name] |
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818 return collections.OrderedDict( |
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819 sorted(fixers.items(), key=lambda item: item[1]._priority, reverse=True) |
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820 ) |
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821 |
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822 |
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823 def fixernames(ui): |
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824 """Returns the names of [fix] config options that have suboptions""" |
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825 names = set() |
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826 for k, v in ui.configitems(b'fix'): |
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827 if b':' in k: |
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828 names.add(k.split(b':', 1)[0]) |
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829 return names |
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830 |
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831 |
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832 class Fixer(object): |
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833 """Wraps the raw config values for a fixer with methods""" |
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834 |
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835 def affects(self, opts, fixctx, path): |
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836 """Should this fixer run on the file at the given path and context?""" |
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837 return self._pattern is not None and scmutil.match( |
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838 fixctx, [self._pattern], opts |
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839 )(path) |
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840 |
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841 def shouldoutputmetadata(self): |
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842 """Should the stdout of this fixer start with JSON and a null byte?""" |
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843 return self._metadata |
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844 |
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845 def command(self, ui, path, ranges): |
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846 """A shell command to use to invoke this fixer on the given file/lines |
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847 |
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848 May return None if there is no appropriate command to run for the given |
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849 parameters. |
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850 """ |
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851 expand = cmdutil.rendercommandtemplate |
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852 parts = [ |
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853 expand( |
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854 ui, |
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855 self._command, |
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856 {b'rootpath': path, b'basename': os.path.basename(path)}, |
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857 ) |
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858 ] |
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859 if self._linerange: |
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860 if self._skipclean and not ranges: |
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861 # No line ranges to fix, so don't run the fixer. |
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862 return None |
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Danny Hooper <hooper@google.com>
parents:
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863 for first, last in ranges: |
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864 parts.append( |
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865 expand( |
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parents:
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866 ui, self._linerange, {b'first': first, b'last': last} |
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867 ) |
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Augie Fackler <augie@google.com>
parents:
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868 ) |
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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869 return b' '.join(parts) |