Mercurial > hg
annotate hgext/eol.py @ 21708:2668a78df8ba stable
keyword: suppress keyword expansion while 'hg fetch' for internal merge
Before this patch, 'hg fetch' may cause unexpected conflict, if 'hg
fetch'-ed changes are located near lines in which keywords are
embedded, because keywords are substituted with other strings in the
working directory.
This patch suppresses keyword expansion while 'hg fetch' for internal
merge by adding 'fetch' to 'restricted' command list like 'merge'.
This patch uses 'hg import' to safely create the new head to be merged
at succeeding 'hg fetch', because:
- branch of revision #10 is different from one of #11 in 'Test'
repository, so just 'hg fetch -r 11' doesn't cause merging between
them
this means the new head should be created manually.
- 'hg import' is easier and safer than 'cat <<EOF' and 'hg commit'
to replay same changes including special characters like '$'
safeness of 'hg import' with keyword extension is already examined
in 'test-keyword.t'.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Thu, 05 Jun 2014 16:47:14 +0900 |
parents | 6500a2eebee8 |
children | fb3e63c603e8 |
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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 copy. 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 copy 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 |
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26 default behaviour; 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 copy, 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 testedwith = 'internal' |
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99 |
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100 # Matches a lone LF, i.e., one that is not part of CRLF. |
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101 singlelf = re.compile('(^|[^\r])\n') |
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102 # Matches a single EOL which can either be a CRLF where repeated CR |
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104 # stray CR is an error. |
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105 eolre = re.compile('\r*\n') |
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106 |
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107 |
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108 def inconsistenteol(data): |
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109 return '\r\n' in data and singlelf.search(data) |
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110 |
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111 def tolf(s, params, ui, **kwargs): |
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112 """Filter to convert to LF EOLs.""" |
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113 if util.binary(s): |
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114 return s |
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115 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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116 return s |
16683 | 117 if (ui.configbool('eol', 'fix-trailing-newline', False) |
118 and s and s[-1] != '\n'): | |
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119 s = s + '\n' |
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120 return eolre.sub('\n', s) |
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121 |
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122 def tocrlf(s, params, ui, **kwargs): |
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123 """Filter to convert to CRLF EOLs.""" |
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124 if util.binary(s): |
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125 return s |
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126 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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127 return s |
16683 | 128 if (ui.configbool('eol', 'fix-trailing-newline', False) |
129 and s and s[-1] != '\n'): | |
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130 s = s + '\n' |
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131 return eolre.sub('\r\n', s) |
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132 |
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133 def isbinary(s, params): |
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134 """Filter to do nothing with the file.""" |
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135 return s |
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136 |
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137 filters = { |
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138 'to-lf': tolf, |
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139 'to-crlf': tocrlf, |
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140 'is-binary': isbinary, |
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141 # The following provide backwards compatibility with win32text |
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142 'cleverencode:': tolf, |
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143 'cleverdecode:': tocrlf |
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144 } |
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145 |
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146 class eolfile(object): |
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147 def __init__(self, ui, root, data): |
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148 self._decode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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149 self._encode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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150 |
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151 self.cfg = config.config() |
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152 # Our files should not be touched. The pattern must be |
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153 # inserted first override a '** = native' pattern. |
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154 self.cfg.set('patterns', '.hg*', 'BIN', 'eol') |
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155 # We can then parse the user's patterns. |
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156 self.cfg.parse('.hgeol', data) |
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157 |
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158 isrepolf = self.cfg.get('repository', 'native') != 'CRLF' |
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159 self._encode['NATIVE'] = isrepolf and 'to-lf' or 'to-crlf' |
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160 iswdlf = ui.config('eol', 'native', os.linesep) in ('LF', '\n') |
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161 self._decode['NATIVE'] = iswdlf and 'to-lf' or 'to-crlf' |
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162 |
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163 include = [] |
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164 exclude = [] |
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165 for pattern, style in self.cfg.items('patterns'): |
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166 key = style.upper() |
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167 if key == 'BIN': |
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168 exclude.append(pattern) |
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169 else: |
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170 include.append(pattern) |
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171 # This will match the files for which we need to care |
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172 # about inconsistent newlines. |
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173 self.match = match.match(root, '', [], include, exclude) |
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174 |
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175 def copytoui(self, ui): |
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176 for pattern, style in self.cfg.items('patterns'): |
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177 key = style.upper() |
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178 try: |
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179 ui.setconfig('decode', pattern, self._decode[key], 'eol') |
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180 ui.setconfig('encode', pattern, self._encode[key], 'eol') |
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181 except KeyError: |
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182 ui.warn(_("ignoring unknown EOL style '%s' from %s\n") |
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183 % (style, self.cfg.source('patterns', pattern))) |
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184 # eol.only-consistent can be specified in ~/.hgrc or .hgeol |
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185 for k, v in self.cfg.items('eol'): |
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186 ui.setconfig('eol', k, v, 'eol') |
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187 |
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188 def checkrev(self, repo, ctx, files): |
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189 failed = [] |
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190 for f in (files or ctx.files()): |
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191 if f not in ctx: |
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192 continue |
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193 for pattern, style in self.cfg.items('patterns'): |
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194 if not match.match(repo.root, '', [pattern])(f): |
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195 continue |
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196 target = self._encode[style.upper()] |
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197 data = ctx[f].data() |
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198 if (target == "to-lf" and "\r\n" in data |
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199 or target == "to-crlf" and singlelf.search(data)): |
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200 failed.append((str(ctx), target, f)) |
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201 break |
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202 return failed |
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203 |
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204 def parseeol(ui, repo, nodes): |
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205 try: |
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206 for node in nodes: |
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207 try: |
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208 if node is None: |
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209 # Cannot use workingctx.data() since it would load |
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210 # and cache the filters before we configure them. |
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211 data = repo.wfile('.hgeol').read() |
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212 else: |
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213 data = repo[node]['.hgeol'].data() |
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214 return eolfile(ui, repo.root, data) |
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215 except (IOError, LookupError): |
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216 pass |
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217 except error.ParseError, inst: |
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218 ui.warn(_("warning: ignoring .hgeol file due to parse error " |
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219 "at %s: %s\n") % (inst.args[1], inst.args[0])) |
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220 return None |
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221 |
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222 def _checkhook(ui, repo, node, headsonly): |
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223 # Get revisions to check and touched files at the same time |
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224 files = set() |
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225 revs = set() |
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226 for rev in xrange(repo[node].rev(), len(repo)): |
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227 revs.add(rev) |
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228 if headsonly: |
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229 ctx = repo[rev] |
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230 files.update(ctx.files()) |
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231 for pctx in ctx.parents(): |
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232 revs.discard(pctx.rev()) |
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233 failed = [] |
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234 for rev in revs: |
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235 ctx = repo[rev] |
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236 eol = parseeol(ui, repo, [ctx.node()]) |
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237 if eol: |
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238 failed.extend(eol.checkrev(repo, ctx, files)) |
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239 |
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240 if failed: |
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241 eols = {'to-lf': 'CRLF', 'to-crlf': 'LF'} |
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242 msgs = [] |
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243 for node, target, f in failed: |
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244 msgs.append(_(" %s in %s should not have %s line endings") % |
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245 (f, node, eols[target])) |
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246 raise util.Abort(_("end-of-line check failed:\n") + "\n".join(msgs)) |
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247 |
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248 def checkallhook(ui, repo, node, hooktype, **kwargs): |
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249 """verify that files have expected EOLs""" |
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250 _checkhook(ui, repo, node, False) |
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251 |
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252 def checkheadshook(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, True) |
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255 |
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256 # "checkheadshook" used to be called "hook" |
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257 hook = checkheadshook |
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258 |
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259 def preupdate(ui, repo, hooktype, parent1, parent2): |
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260 repo.loadeol([parent1]) |
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261 return False |
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262 |
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263 def uisetup(ui): |
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264 ui.setconfig('hooks', 'preupdate.eol', preupdate, 'eol') |
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265 |
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266 def extsetup(ui): |
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267 try: |
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268 extensions.find('win32text') |
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269 ui.warn(_("the eol extension is incompatible with the " |
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270 "win32text extension\n")) |
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271 except KeyError: |
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272 pass |
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273 |
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274 |
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275 def reposetup(ui, repo): |
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276 uisetup(repo.ui) |
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277 |
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278 if not repo.local(): |
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279 return |
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280 for name, fn in filters.iteritems(): |
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281 repo.adddatafilter(name, fn) |
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282 |
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283 ui.setconfig('patch', 'eol', 'auto', 'eol') |
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284 |
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285 class eolrepo(repo.__class__): |
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286 |
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287 def loadeol(self, nodes): |
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288 eol = parseeol(self.ui, self, nodes) |
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289 if eol is None: |
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290 return None |
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291 eol.copytoui(self.ui) |
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292 return eol.match |
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293 |
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294 def _hgcleardirstate(self): |
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295 self._eolfile = self.loadeol([None, 'tip']) |
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296 if not self._eolfile: |
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297 self._eolfile = util.never |
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298 return |
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299 |
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300 try: |
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301 cachemtime = os.path.getmtime(self.join("eol.cache")) |
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302 except OSError: |
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303 cachemtime = 0 |
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304 |
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305 try: |
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306 eolmtime = os.path.getmtime(self.wjoin(".hgeol")) |
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307 except OSError: |
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308 eolmtime = 0 |
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309 |
0bb67503ad4b
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310 if eolmtime > cachemtime: |
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4ae21a7568f3
eol: don't refer to a random name-captured ui object
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17501
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|
311 self.ui.debug("eol: detected change in .hgeol\n") |
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312 wlock = None |
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313 try: |
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314 wlock = self.wlock() |
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315 for f in self.dirstate: |
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316 if self.dirstate[f] == 'n': |
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317 # all normal files need to be looked at |
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318 # again since the new .hgeol file might no |
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319 # longer match a file it matched before |
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320 self.dirstate.normallookup(f) |
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321 # Create or touch the cache to update mtime |
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322 self.opener("eol.cache", "w").close() |
13475
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|
323 wlock.release() |
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324 except error.LockUnavailable: |
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325 # If we cannot lock the repository and clear the |
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326 # dirstate, then a commit might not see all files |
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327 # as modified. But if we cannot lock the |
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328 # repository, then we can also not make a commit, |
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329 # so ignore the error. |
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|
330 pass |
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|
331 |
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332 def commitctx(self, ctx, error=False): |
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333 for f in sorted(ctx.added() + ctx.modified()): |
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|
334 if not self._eolfile(f): |
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|
335 continue |
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|
336 try: |
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|
337 data = ctx[f].data() |
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|
338 except IOError: |
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|
339 continue |
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|
340 if util.binary(data): |
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|
341 # We should not abort here, since the user should |
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342 # be able to say "** = native" to automatically |
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343 # have all non-binary files taken care of. |
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|
344 continue |
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|
345 if inconsistenteol(data): |
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|
346 raise util.Abort(_("inconsistent newline style " |
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|
347 "in %s\n") % f) |
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348 return super(eolrepo, self).commitctx(ctx, error) |
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|
349 repo.__class__ = eolrepo |
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|
350 repo._hgcleardirstate() |