Mercurial > hg
annotate hgext/eol.py @ 27171:3028ea0aff46
histedit: mention histedit-last-edit.txt on abort
Users may spend a lot of effort writing histedit rules,
getting an abort without being told they can recover their work
is very frustrating.
Avoid that by telling them where to find their work.
author | timeless <timeless@mozdev.org> |
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date | Wed, 02 Dec 2015 08:07:36 +0000 |
parents | 56b2bcea2529 |
children | f5b6b4e574c1 |
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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 mercurial.i18n import _ |
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95 from mercurial import util, config, extensions, match, error |
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96 import re, os |
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97 |
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98 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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99 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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100 # be specifying the version(s) of Mercurial they are tested with, or |
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101 # leave the attribute unspecified. |
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102 testedwith = 'internal' |
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103 |
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104 # Matches a lone LF, i.e., one that is not part of CRLF. |
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105 singlelf = re.compile('(^|[^\r])\n') |
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106 # Matches a single EOL which can either be a CRLF where repeated CR |
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108 # stray CR is an error. |
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109 eolre = re.compile('\r*\n') |
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110 |
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111 |
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112 def inconsistenteol(data): |
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113 return '\r\n' in data and singlelf.search(data) |
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114 |
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115 def tolf(s, params, ui, **kwargs): |
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116 """Filter to convert to LF EOLs.""" |
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117 if util.binary(s): |
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118 return s |
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119 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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120 return s |
16683 | 121 if (ui.configbool('eol', 'fix-trailing-newline', False) |
122 and s and s[-1] != '\n'): | |
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123 s = s + '\n' |
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124 return eolre.sub('\n', s) |
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125 |
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126 def tocrlf(s, params, ui, **kwargs): |
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127 """Filter to convert to CRLF EOLs.""" |
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128 if util.binary(s): |
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129 return s |
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130 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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131 return s |
16683 | 132 if (ui.configbool('eol', 'fix-trailing-newline', False) |
133 and s and s[-1] != '\n'): | |
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134 s = s + '\n' |
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135 return eolre.sub('\r\n', s) |
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136 |
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137 def isbinary(s, params): |
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138 """Filter to do nothing with the file.""" |
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139 return s |
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140 |
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141 filters = { |
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142 'to-lf': tolf, |
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143 'to-crlf': tocrlf, |
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144 'is-binary': isbinary, |
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145 # The following provide backwards compatibility with win32text |
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146 'cleverencode:': tolf, |
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147 'cleverdecode:': tocrlf |
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148 } |
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149 |
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150 class eolfile(object): |
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151 def __init__(self, ui, root, data): |
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152 self._decode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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153 self._encode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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154 |
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155 self.cfg = config.config() |
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156 # Our files should not be touched. The pattern must be |
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157 # inserted first override a '** = native' pattern. |
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158 self.cfg.set('patterns', '.hg*', 'BIN', 'eol') |
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159 # We can then parse the user's patterns. |
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160 self.cfg.parse('.hgeol', data) |
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161 |
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162 isrepolf = self.cfg.get('repository', 'native') != 'CRLF' |
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163 self._encode['NATIVE'] = isrepolf and 'to-lf' or 'to-crlf' |
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164 iswdlf = ui.config('eol', 'native', os.linesep) in ('LF', '\n') |
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165 self._decode['NATIVE'] = iswdlf and 'to-lf' or 'to-crlf' |
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166 |
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167 include = [] |
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168 exclude = [] |
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169 for pattern, style in self.cfg.items('patterns'): |
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170 key = style.upper() |
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171 if key == 'BIN': |
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172 exclude.append(pattern) |
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173 else: |
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174 include.append(pattern) |
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175 # This will match the files for which we need to care |
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176 # about inconsistent newlines. |
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177 self.match = match.match(root, '', [], include, exclude) |
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178 |
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179 def copytoui(self, ui): |
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180 for pattern, style in self.cfg.items('patterns'): |
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181 key = style.upper() |
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182 try: |
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183 ui.setconfig('decode', pattern, self._decode[key], 'eol') |
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184 ui.setconfig('encode', pattern, self._encode[key], 'eol') |
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185 except KeyError: |
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186 ui.warn(_("ignoring unknown EOL style '%s' from %s\n") |
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187 % (style, self.cfg.source('patterns', pattern))) |
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188 # eol.only-consistent can be specified in ~/.hgrc or .hgeol |
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189 for k, v in self.cfg.items('eol'): |
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190 ui.setconfig('eol', k, v, 'eol') |
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191 |
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192 def checkrev(self, repo, ctx, files): |
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193 failed = [] |
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194 for f in (files or ctx.files()): |
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195 if f not in ctx: |
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196 continue |
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197 for pattern, style in self.cfg.items('patterns'): |
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198 if not match.match(repo.root, '', [pattern])(f): |
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199 continue |
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200 target = self._encode[style.upper()] |
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201 data = ctx[f].data() |
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202 if (target == "to-lf" and "\r\n" in data |
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203 or target == "to-crlf" and singlelf.search(data)): |
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204 failed.append((str(ctx), target, f)) |
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205 break |
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206 return failed |
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207 |
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208 def parseeol(ui, repo, nodes): |
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209 try: |
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210 for node in nodes: |
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211 try: |
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212 if node is None: |
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213 # Cannot use workingctx.data() since it would load |
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214 # and cache the filters before we configure them. |
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215 data = repo.wfile('.hgeol').read() |
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216 else: |
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217 data = repo[node]['.hgeol'].data() |
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218 return eolfile(ui, repo.root, data) |
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219 except (IOError, LookupError): |
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220 pass |
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221 except error.ParseError as inst: |
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222 ui.warn(_("warning: ignoring .hgeol file due to parse error " |
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223 "at %s: %s\n") % (inst.args[1], inst.args[0])) |
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224 return None |
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225 |
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226 def _checkhook(ui, repo, node, headsonly): |
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227 # Get revisions to check and touched files at the same time |
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228 files = set() |
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229 revs = set() |
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230 for rev in xrange(repo[node].rev(), len(repo)): |
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231 revs.add(rev) |
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232 if headsonly: |
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233 ctx = repo[rev] |
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234 files.update(ctx.files()) |
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235 for pctx in ctx.parents(): |
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236 revs.discard(pctx.rev()) |
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237 failed = [] |
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238 for rev in revs: |
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239 ctx = repo[rev] |
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240 eol = parseeol(ui, repo, [ctx.node()]) |
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241 if eol: |
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242 failed.extend(eol.checkrev(repo, ctx, files)) |
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243 |
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244 if failed: |
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245 eols = {'to-lf': 'CRLF', 'to-crlf': 'LF'} |
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246 msgs = [] |
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247 for node, target, f in failed: |
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248 msgs.append(_(" %s in %s should not have %s line endings") % |
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249 (f, node, eols[target])) |
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250 raise error.Abort(_("end-of-line check failed:\n") + "\n".join(msgs)) |
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251 |
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252 def checkallhook(ui, repo, node, hooktype, **kwargs): |
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253 """verify that files have expected EOLs""" |
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254 _checkhook(ui, repo, node, False) |
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255 |
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256 def checkheadshook(ui, repo, node, hooktype, **kwargs): |
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257 """verify that files have expected EOLs""" |
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258 _checkhook(ui, repo, node, True) |
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259 |
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260 # "checkheadshook" used to be called "hook" |
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261 hook = checkheadshook |
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262 |
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263 def preupdate(ui, repo, hooktype, parent1, parent2): |
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264 repo.loadeol([parent1]) |
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265 return False |
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266 |
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267 def uisetup(ui): |
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268 ui.setconfig('hooks', 'preupdate.eol', preupdate, 'eol') |
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269 |
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270 def extsetup(ui): |
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271 try: |
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272 extensions.find('win32text') |
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273 ui.warn(_("the eol extension is incompatible with the " |
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274 "win32text extension\n")) |
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275 except KeyError: |
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276 pass |
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277 |
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278 |
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279 def reposetup(ui, repo): |
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280 uisetup(repo.ui) |
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281 |
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282 if not repo.local(): |
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283 return |
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284 for name, fn in filters.iteritems(): |
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285 repo.adddatafilter(name, fn) |
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286 |
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287 ui.setconfig('patch', 'eol', 'auto', 'eol') |
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288 |
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289 class eolrepo(repo.__class__): |
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290 |
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291 def loadeol(self, nodes): |
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292 eol = parseeol(self.ui, self, nodes) |
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|
293 if eol is None: |
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294 return None |
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295 eol.copytoui(self.ui) |
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296 return eol.match |
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297 |
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298 def _hgcleardirstate(self): |
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299 self._eolfile = self.loadeol([None, 'tip']) |
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300 if not self._eolfile: |
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301 self._eolfile = util.never |
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302 return |
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|
303 |
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304 try: |
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305 cachemtime = os.path.getmtime(self.join("eol.cache")) |
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306 except OSError: |
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|
307 cachemtime = 0 |
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|
308 |
0bb67503ad4b
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309 try: |
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310 eolmtime = os.path.getmtime(self.wjoin(".hgeol")) |
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311 except OSError: |
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312 eolmtime = 0 |
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313 |
0bb67503ad4b
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314 if eolmtime > cachemtime: |
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4ae21a7568f3
eol: don't refer to a random name-captured ui object
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|
315 self.ui.debug("eol: detected change in .hgeol\n") |
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316 wlock = None |
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|
317 try: |
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|
318 wlock = self.wlock() |
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319 for f in self.dirstate: |
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320 if self.dirstate[f] == 'n': |
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321 # all normal files need to be looked at |
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322 # again since the new .hgeol file might no |
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323 # longer match a file it matched before |
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324 self.dirstate.normallookup(f) |
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325 # Create or touch the cache to update mtime |
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|
326 self.vfs("eol.cache", "w").close() |
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|
327 wlock.release() |
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|
328 except error.LockUnavailable: |
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329 # If we cannot lock the repository and clear the |
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330 # dirstate, then a commit might not see all files |
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|
331 # as modified. But if we cannot lock the |
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332 # repository, then we can also not make a commit, |
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|
333 # so ignore the error. |
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|
334 pass |
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|
335 |
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|
336 def commitctx(self, ctx, haserror=False): |
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337 for f in sorted(ctx.added() + ctx.modified()): |
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|
338 if not self._eolfile(f): |
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|
339 continue |
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|
340 fctx = ctx[f] |
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|
341 if fctx is None: |
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|
342 continue |
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343 data = fctx.data() |
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|
344 if util.binary(data): |
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|
345 # We should not abort here, since the user should |
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|
346 # be able to say "** = native" to automatically |
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|
347 # have all non-binary files taken care of. |
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|
348 continue |
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|
349 if inconsistenteol(data): |
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|
350 raise error.Abort(_("inconsistent newline style " |
20869
9658a79968c6
i18n: fix "% inside _()" problems
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
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|
351 "in %s\n") % f) |
26586
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|
352 return super(eolrepo, self).commitctx(ctx, haserror) |
11249
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
changeset
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353 repo.__class__ = eolrepo |
0bb67503ad4b
eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff
changeset
|
354 repo._hgcleardirstate() |