Mercurial > hg
annotate hgext/eol.py @ 43077:687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Done with
python3.7 contrib/byteify-strings.py -i $(hg files 'set:mercurial/**.py - mercurial/thirdparty/** + hgext/**.py - hgext/fsmonitor/pywatchman/** - mercurial/__init__.py')
black -l 80 -t py33 -S $(hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**" - hgext/fsmonitor/pywatchman/**')
# skip-blame mass-reformatting only
Differential Revision: https://phab.mercurial-scm.org/D6972
author | Augie Fackler <augie@google.com> |
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date | Sun, 06 Oct 2019 09:48:39 -0400 |
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1 """automatically manage newlines in repository files |
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2 |
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3 This extension allows you to manage the type of line endings (CRLF or |
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4 LF) that are used in the repository and in the local working |
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5 directory. That way you can get CRLF line endings on Windows and LF on |
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6 Unix/Mac, thereby letting everybody use their OS native line endings. |
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7 |
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8 The extension reads its configuration from a versioned ``.hgeol`` |
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9 configuration file found in the root of the working directory. The |
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10 ``.hgeol`` file use the same syntax as all other Mercurial |
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11 configuration files. It uses two sections, ``[patterns]`` and |
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12 ``[repository]``. |
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13 |
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14 The ``[patterns]`` section specifies how line endings should be |
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15 converted between the working directory and the repository. The format is |
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16 specified by a file pattern. The first match is used, so put more |
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17 specific patterns first. The available line endings are ``LF``, |
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18 ``CRLF``, and ``BIN``. |
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19 |
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20 Files with the declared format of ``CRLF`` or ``LF`` are always |
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21 checked out and stored in the repository in that format and files |
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22 declared to be binary (``BIN``) are left unchanged. Additionally, |
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23 ``native`` is an alias for checking out in the platform's default line |
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24 ending: ``LF`` on Unix (including Mac OS X) and ``CRLF`` on |
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25 Windows. Note that ``BIN`` (do nothing to line endings) is Mercurial's |
26098 | 26 default behavior; it is only needed if you need to override a later, |
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27 more general pattern. |
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28 |
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29 The optional ``[repository]`` section specifies the line endings to |
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30 use for files stored in the repository. It has a single setting, |
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31 ``native``, which determines the storage line endings for files |
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32 declared as ``native`` in the ``[patterns]`` section. It can be set to |
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33 ``LF`` or ``CRLF``. The default is ``LF``. For example, this means |
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34 that on Windows, files configured as ``native`` (``CRLF`` by default) |
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35 will be converted to ``LF`` when stored in the repository. Files |
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36 declared as ``LF``, ``CRLF``, or ``BIN`` in the ``[patterns]`` section |
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37 are always stored as-is in the repository. |
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38 |
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39 Example versioned ``.hgeol`` file:: |
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40 |
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41 [patterns] |
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42 **.py = native |
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43 **.vcproj = CRLF |
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44 **.txt = native |
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45 Makefile = LF |
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46 **.jpg = BIN |
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47 |
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48 [repository] |
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49 native = LF |
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50 |
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51 .. note:: |
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52 |
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53 The rules will first apply when files are touched in the working |
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54 directory, e.g. by updating to null and back to tip to touch all files. |
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55 |
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56 The extension uses an optional ``[eol]`` section read from both the |
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57 normal Mercurial configuration files and the ``.hgeol`` file, with the |
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58 latter overriding the former. You can use that section to control the |
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59 overall behavior. There are three settings: |
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60 |
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61 - ``eol.native`` (default ``os.linesep``) can be set to ``LF`` or |
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62 ``CRLF`` to override the default interpretation of ``native`` for |
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63 checkout. This can be used with :hg:`archive` on Unix, say, to |
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64 generate an archive where files have line endings for Windows. |
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65 |
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66 - ``eol.only-consistent`` (default True) can be set to False to make |
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67 the extension convert files with inconsistent EOLs. Inconsistent |
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68 means that there is both ``CRLF`` and ``LF`` present in the file. |
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69 Such files are normally not touched under the assumption that they |
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70 have mixed EOLs on purpose. |
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71 |
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72 - ``eol.fix-trailing-newline`` (default False) can be set to True to |
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73 ensure that converted files end with a EOL character (either ``\\n`` |
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74 or ``\\r\\n`` as per the configured patterns). |
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75 |
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76 The extension provides ``cleverencode:`` and ``cleverdecode:`` filters |
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77 like the deprecated win32text extension does. This means that you can |
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78 disable win32text and enable eol and your filters will still work. You |
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79 only need to these filters until you have prepared a ``.hgeol`` file. |
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80 |
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81 The ``win32text.forbid*`` hooks provided by the win32text extension |
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82 have been unified into a single hook named ``eol.checkheadshook``. The |
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83 hook will lookup the expected line endings from the ``.hgeol`` file, |
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84 which means you must migrate to a ``.hgeol`` file first before using |
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85 the hook. ``eol.checkheadshook`` only checks heads, intermediate |
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86 invalid revisions will be pushed. To forbid them completely, use the |
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87 ``eol.checkallhook`` hook. These hooks are best used as |
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88 ``pretxnchangegroup`` hooks. |
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89 |
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90 See :hg:`help patterns` for more information about the glob patterns |
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91 used. |
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92 """ |
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93 |
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94 from __future__ import absolute_import |
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95 |
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96 import os |
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97 import re |
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98 from mercurial.i18n import _ |
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99 from mercurial import ( |
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100 config, |
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101 error as errormod, |
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102 extensions, |
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103 match, |
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104 pycompat, |
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105 registrar, |
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106 scmutil, |
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107 util, |
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108 ) |
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109 from mercurial.utils import stringutil |
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110 |
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111 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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112 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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113 # be specifying the version(s) of Mercurial they are tested with, or |
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114 # leave the attribute unspecified. |
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115 testedwith = b'ships-with-hg-core' |
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116 |
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117 configtable = {} |
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118 configitem = registrar.configitem(configtable) |
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119 |
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120 configitem( |
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121 b'eol', b'fix-trailing-newline', default=False, |
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122 ) |
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123 configitem( |
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124 b'eol', b'native', default=pycompat.oslinesep, |
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125 ) |
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126 configitem( |
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127 b'eol', b'only-consistent', default=True, |
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128 ) |
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129 |
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130 # Matches a lone LF, i.e., one that is not part of CRLF. |
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131 singlelf = re.compile(b'(^|[^\r])\n') |
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132 |
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133 |
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134 def inconsistenteol(data): |
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135 return b'\r\n' in data and singlelf.search(data) |
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136 |
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137 |
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138 def tolf(s, params, ui, **kwargs): |
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139 """Filter to convert to LF EOLs.""" |
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140 if stringutil.binary(s): |
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141 return s |
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142 if ui.configbool(b'eol', b'only-consistent') and inconsistenteol(s): |
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143 return s |
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144 if ( |
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145 ui.configbool(b'eol', b'fix-trailing-newline') |
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146 and s |
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147 and not s.endswith(b'\n') |
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148 ): |
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149 s = s + b'\n' |
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150 return util.tolf(s) |
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151 |
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152 |
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153 def tocrlf(s, params, ui, **kwargs): |
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154 """Filter to convert to CRLF EOLs.""" |
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155 if stringutil.binary(s): |
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156 return s |
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157 if ui.configbool(b'eol', b'only-consistent') and inconsistenteol(s): |
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158 return s |
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159 if ( |
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160 ui.configbool(b'eol', b'fix-trailing-newline') |
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161 and s |
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162 and not s.endswith(b'\n') |
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163 ): |
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164 s = s + b'\n' |
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165 return util.tocrlf(s) |
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166 |
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167 |
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168 def isbinary(s, params): |
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169 """Filter to do nothing with the file.""" |
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170 return s |
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171 |
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172 |
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173 filters = { |
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174 b'to-lf': tolf, |
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175 b'to-crlf': tocrlf, |
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176 b'is-binary': isbinary, |
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177 # The following provide backwards compatibility with win32text |
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178 b'cleverencode:': tolf, |
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179 b'cleverdecode:': tocrlf, |
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180 } |
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181 |
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182 |
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183 class eolfile(object): |
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184 def __init__(self, ui, root, data): |
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185 self._decode = { |
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186 b'LF': b'to-lf', |
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187 b'CRLF': b'to-crlf', |
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188 b'BIN': b'is-binary', |
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189 } |
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190 self._encode = { |
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191 b'LF': b'to-lf', |
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192 b'CRLF': b'to-crlf', |
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193 b'BIN': b'is-binary', |
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194 } |
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195 |
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196 self.cfg = config.config() |
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197 # Our files should not be touched. The pattern must be |
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198 # inserted first override a '** = native' pattern. |
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199 self.cfg.set(b'patterns', b'.hg*', b'BIN', b'eol') |
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200 # We can then parse the user's patterns. |
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201 self.cfg.parse(b'.hgeol', data) |
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202 |
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203 isrepolf = self.cfg.get(b'repository', b'native') != b'CRLF' |
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204 self._encode[b'NATIVE'] = isrepolf and b'to-lf' or b'to-crlf' |
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205 iswdlf = ui.config(b'eol', b'native') in (b'LF', b'\n') |
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206 self._decode[b'NATIVE'] = iswdlf and b'to-lf' or b'to-crlf' |
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207 |
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208 include = [] |
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209 exclude = [] |
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210 self.patterns = [] |
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211 for pattern, style in self.cfg.items(b'patterns'): |
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212 key = style.upper() |
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213 if key == b'BIN': |
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214 exclude.append(pattern) |
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215 else: |
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216 include.append(pattern) |
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217 m = match.match(root, b'', [pattern]) |
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218 self.patterns.append((pattern, key, m)) |
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219 # This will match the files for which we need to care |
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220 # about inconsistent newlines. |
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221 self.match = match.match(root, b'', [], include, exclude) |
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222 |
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223 def copytoui(self, ui): |
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224 for pattern, key, m in self.patterns: |
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225 try: |
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226 ui.setconfig(b'decode', pattern, self._decode[key], b'eol') |
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227 ui.setconfig(b'encode', pattern, self._encode[key], b'eol') |
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228 except KeyError: |
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229 ui.warn( |
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230 _(b"ignoring unknown EOL style '%s' from %s\n") |
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231 % (key, self.cfg.source(b'patterns', pattern)) |
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232 ) |
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233 # eol.only-consistent can be specified in ~/.hgrc or .hgeol |
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234 for k, v in self.cfg.items(b'eol'): |
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235 ui.setconfig(b'eol', k, v, b'eol') |
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236 |
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237 def checkrev(self, repo, ctx, files): |
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238 failed = [] |
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239 for f in files or ctx.files(): |
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240 if f not in ctx: |
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241 continue |
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242 for pattern, key, m in self.patterns: |
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243 if not m(f): |
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244 continue |
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245 target = self._encode[key] |
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246 data = ctx[f].data() |
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247 if ( |
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248 target == b"to-lf" |
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249 and b"\r\n" in data |
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250 or target == b"to-crlf" |
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251 and singlelf.search(data) |
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252 ): |
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253 failed.append((f, target, bytes(ctx))) |
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254 break |
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255 return failed |
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256 |
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257 |
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258 def parseeol(ui, repo, nodes): |
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259 try: |
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260 for node in nodes: |
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261 try: |
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262 if node is None: |
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263 # Cannot use workingctx.data() since it would load |
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264 # and cache the filters before we configure them. |
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265 data = repo.wvfs(b'.hgeol').read() |
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266 else: |
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267 data = repo[node][b'.hgeol'].data() |
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268 return eolfile(ui, repo.root, data) |
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269 except (IOError, LookupError): |
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270 pass |
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271 except errormod.ParseError as inst: |
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272 ui.warn( |
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273 _( |
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274 b"warning: ignoring .hgeol file due to parse error " |
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275 b"at %s: %s\n" |
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276 ) |
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277 % (inst.args[1], inst.args[0]) |
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278 ) |
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279 return None |
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280 |
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281 |
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282 def ensureenabled(ui): |
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283 """make sure the extension is enabled when used as hook |
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284 |
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285 When eol is used through hooks, the extension is never formally loaded and |
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286 enabled. This has some side effect, for example the config declaration is |
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287 never loaded. This function ensure the extension is enabled when running |
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288 hooks. |
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289 """ |
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290 if b'eol' in ui._knownconfig: |
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291 return |
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292 ui.setconfig(b'extensions', b'eol', b'', source=b'internal') |
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293 extensions.loadall(ui, [b'eol']) |
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294 |
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295 |
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296 def _checkhook(ui, repo, node, headsonly): |
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297 # Get revisions to check and touched files at the same time |
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298 ensureenabled(ui) |
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299 files = set() |
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300 revs = set() |
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301 for rev in pycompat.xrange(repo[node].rev(), len(repo)): |
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302 revs.add(rev) |
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303 if headsonly: |
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304 ctx = repo[rev] |
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305 files.update(ctx.files()) |
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306 for pctx in ctx.parents(): |
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307 revs.discard(pctx.rev()) |
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308 failed = [] |
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309 for rev in revs: |
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310 ctx = repo[rev] |
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311 eol = parseeol(ui, repo, [ctx.node()]) |
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312 if eol: |
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313 failed.extend(eol.checkrev(repo, ctx, files)) |
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314 |
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315 if failed: |
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316 eols = {b'to-lf': b'CRLF', b'to-crlf': b'LF'} |
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317 msgs = [] |
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318 for f, target, node in sorted(failed): |
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319 msgs.append( |
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320 _(b" %s in %s should not have %s line endings") |
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321 % (f, node, eols[target]) |
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322 ) |
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323 raise errormod.Abort( |
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324 _(b"end-of-line check failed:\n") + b"\n".join(msgs) |
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325 ) |
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326 |
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327 |
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328 def checkallhook(ui, repo, node, hooktype, **kwargs): |
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329 """verify that files have expected EOLs""" |
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330 _checkhook(ui, repo, node, False) |
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331 |
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332 |
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333 def checkheadshook(ui, repo, node, hooktype, **kwargs): |
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334 """verify that files have expected EOLs""" |
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335 _checkhook(ui, repo, node, True) |
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336 |
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337 |
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338 # "checkheadshook" used to be called "hook" |
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339 hook = checkheadshook |
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340 |
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341 |
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342 def preupdate(ui, repo, hooktype, parent1, parent2): |
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343 p1node = scmutil.resolvehexnodeidprefix(repo, parent1) |
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344 repo.loadeol([p1node]) |
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345 return False |
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346 |
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347 |
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348 def uisetup(ui): |
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349 ui.setconfig(b'hooks', b'preupdate.eol', preupdate, b'eol') |
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350 |
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351 |
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352 def extsetup(ui): |
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353 try: |
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354 extensions.find(b'win32text') |
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355 ui.warn( |
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356 _( |
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357 b"the eol extension is incompatible with the " |
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358 b"win32text extension\n" |
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359 ) |
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360 ) |
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361 except KeyError: |
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362 pass |
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363 |
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364 |
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365 def reposetup(ui, repo): |
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366 uisetup(repo.ui) |
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367 |
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368 if not repo.local(): |
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369 return |
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370 for name, fn in filters.iteritems(): |
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371 repo.adddatafilter(name, fn) |
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372 |
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373 ui.setconfig(b'patch', b'eol', b'auto', b'eol') |
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374 |
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375 class eolrepo(repo.__class__): |
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376 def loadeol(self, nodes): |
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377 eol = parseeol(self.ui, self, nodes) |
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378 if eol is None: |
13612
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eol: remove unused argument in readhgeol()
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379 return None |
14854
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eol: eol.only-consistent can now be specified in .hgeol
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380 eol.copytoui(self.ui) |
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381 return eol.match |
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382 |
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383 def _hgcleardirstate(self): |
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384 self._eolmatch = self.loadeol([None, b'tip']) |
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385 if not self._eolmatch: |
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386 self._eolmatch = util.never |
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387 return |
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388 |
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389 oldeol = None |
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390 try: |
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391 cachemtime = os.path.getmtime(self.vfs.join(b"eol.cache")) |
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392 except OSError: |
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393 cachemtime = 0 |
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394 else: |
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395 olddata = self.vfs.read(b"eol.cache") |
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396 if olddata: |
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397 oldeol = eolfile(self.ui, self.root, olddata) |
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398 |
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399 try: |
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400 eolmtime = os.path.getmtime(self.wjoin(b".hgeol")) |
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401 except OSError: |
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402 eolmtime = 0 |
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403 |
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404 if eolmtime > cachemtime: |
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405 self.ui.debug(b"eol: detected change in .hgeol\n") |
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406 |
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407 hgeoldata = self.wvfs.read(b'.hgeol') |
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408 neweol = eolfile(self.ui, self.root, hgeoldata) |
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409 |
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|
410 wlock = None |
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|
411 try: |
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|
412 wlock = self.wlock() |
13581
b30a488762e1
eol: use dirstate methods to clear dirstate
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413 for f in self.dirstate: |
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414 if self.dirstate[f] != b'n': |
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415 continue |
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416 if oldeol is not None: |
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417 if not oldeol.match(f) and not neweol.match(f): |
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418 continue |
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419 oldkey = None |
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420 for pattern, key, m in oldeol.patterns: |
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|
421 if m(f): |
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|
422 oldkey = key |
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|
423 break |
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|
424 newkey = None |
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|
425 for pattern, key, m in neweol.patterns: |
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|
426 if m(f): |
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|
427 newkey = key |
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|
428 break |
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|
429 if oldkey == newkey: |
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|
430 continue |
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|
431 # all normal files need to be looked at again since |
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432 # the new .hgeol file specify a different filter |
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|
433 self.dirstate.normallookup(f) |
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434 # Write the cache to update mtime and cache .hgeol |
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435 with self.vfs(b"eol.cache", b"w") as f: |
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changeset
|
436 f.write(hgeoldata) |
32987
74930cf4a10e
eol: import 'error' as 'errormod'
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
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|
437 except errormod.LockUnavailable: |
13475
c7bef25ca393
eol: handle LockUnavailable error (issue2569)
Martin Geisler <mg@aragost.com>
parents:
13471
diff
changeset
|
438 # If we cannot lock the repository and clear the |
c7bef25ca393
eol: handle LockUnavailable error (issue2569)
Martin Geisler <mg@aragost.com>
parents:
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changeset
|
439 # dirstate, then a commit might not see all files |
c7bef25ca393
eol: handle LockUnavailable error (issue2569)
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|
440 # as modified. But if we cannot lock the |
c7bef25ca393
eol: handle LockUnavailable error (issue2569)
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|
441 # repository, then we can also not make a commit, |
c7bef25ca393
eol: handle LockUnavailable error (issue2569)
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|
442 # so ignore the error. |
c7bef25ca393
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changeset
|
443 pass |
30164
1c518d69d994
eol: make sure we always release the wlock when writing cache
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
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diff
changeset
|
444 finally: |
1c518d69d994
eol: make sure we always release the wlock when writing cache
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changeset
|
445 if wlock is not None: |
1c518d69d994
eol: make sure we always release the wlock when writing cache
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|
446 wlock.release() |
11249
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|
447 |
42620
d98ec36be808
convert: add a config option to help doing identity hg->hg conversion
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
38783
diff
changeset
|
448 def commitctx(self, ctx, error=False, origctx=None): |
11249
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|
449 for f in sorted(ctx.added() + ctx.modified()): |
30113
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eol: fix variable naming - call it _eolmatch instead of _eolfile
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|
450 if not self._eolmatch(f): |
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|
451 continue |
23068
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|
452 fctx = ctx[f] |
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|
453 if fctx is None: |
14862
abf915f537be
eol: ignore IOError from deleted files in commitctx
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parents:
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|
454 continue |
23068
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455 data = fctx.data() |
37084
f0b6fbea00cf
stringutil: bulk-replace call sites to point to new module
Yuya Nishihara <yuya@tcha.org>
parents:
36667
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456 if stringutil.binary(data): |
11249
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
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457 # We should not abort here, since the user should |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
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458 # be able to say "** = native" to automatically |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
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459 # have all non-binary files taken care of. |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
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460 continue |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
changeset
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461 if inconsistenteol(data): |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42620
diff
changeset
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462 raise errormod.Abort( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
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463 _(b"inconsistent newline style " b"in %s\n") % f |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42620
diff
changeset
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464 ) |
42620
d98ec36be808
convert: add a config option to help doing identity hg->hg conversion
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
38783
diff
changeset
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465 return super(eolrepo, self).commitctx(ctx, error, origctx) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42620
diff
changeset
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466 |
11249
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eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
changeset
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467 repo.__class__ = eolrepo |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
changeset
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468 repo._hgcleardirstate() |