Mercurial > hg
annotate hgext/eol.py @ 15904:7d28d6a67dd3
rebase: write series file without removed mq patches
Rebase will remove empty changesets and will also completely remove the mq
patch file for rebased empty patches.
Starting with b28004513977 (1.9) it would preserve guards by writing the old
series file back. That would however also reintroduce removed patch files in
the series file and the inconsistency would make qpop + qpush fail.
This patch backs out most of b28004513977 and makes sure guards are preserved
without reintroducing removed patches.
author | Mads Kiilerich <mads@kiilerich.com> |
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date | Tue, 17 Jan 2012 02:55:55 +0100 |
parents | ad6a58581ecd |
children | f97e7c378349 |
rev | line source |
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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 The rules will first apply when files are touched in the working |
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53 copy, e.g. by updating to null and back to tip to touch all files. |
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54 |
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55 The extension uses an optional ``[eol]`` section read from both the |
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56 normal Mercurial configuration files and the ``.hgeol`` file, with the |
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57 latter overriding the former. You can use that section to control the |
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58 overall behavior. There are three settings: |
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59 |
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60 - ``eol.native`` (default ``os.linesep``) can be set to ``LF`` or |
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61 ``CRLF`` to override the default interpretation of ``native`` for |
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62 checkout. This can be used with :hg:`archive` on Unix, say, to |
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63 generate an archive where files have line endings for Windows. |
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64 |
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65 - ``eol.only-consistent`` (default True) can be set to False to make |
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66 the extension convert files with inconsistent EOLs. Inconsistent |
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67 means that there is both ``CRLF`` and ``LF`` present in the file. |
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68 Such files are normally not touched under the assumption that they |
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69 have mixed EOLs on purpose. |
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70 |
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71 - ``eol.fix-trailing-newline`` (default False) can be set to True to |
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72 ensure that converted files end with a EOL character (either ``\\n`` |
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73 or ``\\r\\n`` as per the configured patterns). |
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74 |
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75 The extension provides ``cleverencode:`` and ``cleverdecode:`` filters |
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76 like the deprecated win32text extension does. This means that you can |
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77 disable win32text and enable eol and your filters will still work. You |
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78 only need to these filters until you have prepared a ``.hgeol`` file. |
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79 |
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80 The ``win32text.forbid*`` hooks provided by the win32text extension |
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81 have been unified into a single hook named ``eol.checkheadshook``. The |
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82 hook will lookup the expected line endings from the ``.hgeol`` file, |
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83 which means you must migrate to a ``.hgeol`` file first before using |
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84 the hook. ``eol.checkheadshook`` only checks heads, intermediate |
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85 invalid revisions will be pushed. To forbid them completely, use the |
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86 ``eol.checkallhook`` hook. These hooks are best used as |
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87 ``pretxnchangegroup`` hooks. |
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88 |
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89 See :hg:`help patterns` for more information about the glob patterns |
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90 used. |
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91 """ |
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92 |
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93 from mercurial.i18n import _ |
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94 from mercurial import util, config, extensions, match, error |
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95 import re, os |
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96 |
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97 # Matches a lone LF, i.e., one that is not part of CRLF. |
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98 singlelf = re.compile('(^|[^\r])\n') |
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99 # Matches a single EOL which can either be a CRLF where repeated CR |
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100 # are removed or a LF. We do not care about old Machintosh files, so a |
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101 # stray CR is an error. |
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102 eolre = re.compile('\r*\n') |
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103 |
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104 |
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105 def inconsistenteol(data): |
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106 return '\r\n' in data and singlelf.search(data) |
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107 |
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108 def tolf(s, params, ui, **kwargs): |
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109 """Filter to convert to LF EOLs.""" |
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110 if util.binary(s): |
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111 return s |
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112 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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113 return s |
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114 if ui.configbool('eol', 'fix-trailing-newline', False) and s and s[-1] != '\n': |
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115 s = s + '\n' |
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116 return eolre.sub('\n', s) |
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117 |
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118 def tocrlf(s, params, ui, **kwargs): |
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119 """Filter to convert to CRLF EOLs.""" |
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120 if util.binary(s): |
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121 return s |
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122 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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123 return s |
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124 if ui.configbool('eol', 'fix-trailing-newline', False) and s and s[-1] != '\n': |
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125 s = s + '\n' |
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126 return eolre.sub('\r\n', s) |
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127 |
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128 def isbinary(s, params): |
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129 """Filter to do nothing with the file.""" |
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130 return s |
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131 |
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132 filters = { |
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133 'to-lf': tolf, |
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134 'to-crlf': tocrlf, |
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135 'is-binary': isbinary, |
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136 # The following provide backwards compatibility with win32text |
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137 'cleverencode:': tolf, |
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138 'cleverdecode:': tocrlf |
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139 } |
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140 |
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141 class eolfile(object): |
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142 def __init__(self, ui, root, data): |
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143 self._decode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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144 self._encode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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145 |
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146 self.cfg = config.config() |
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147 # Our files should not be touched. The pattern must be |
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148 # inserted first override a '** = native' pattern. |
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149 self.cfg.set('patterns', '.hg*', 'BIN') |
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150 # We can then parse the user's patterns. |
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151 self.cfg.parse('.hgeol', data) |
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152 |
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153 isrepolf = self.cfg.get('repository', 'native') != 'CRLF' |
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154 self._encode['NATIVE'] = isrepolf and 'to-lf' or 'to-crlf' |
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155 iswdlf = ui.config('eol', 'native', os.linesep) in ('LF', '\n') |
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156 self._decode['NATIVE'] = iswdlf and 'to-lf' or 'to-crlf' |
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157 |
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158 include = [] |
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159 exclude = [] |
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160 for pattern, style in self.cfg.items('patterns'): |
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161 key = style.upper() |
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162 if key == 'BIN': |
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163 exclude.append(pattern) |
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164 else: |
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165 include.append(pattern) |
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166 # This will match the files for which we need to care |
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167 # about inconsistent newlines. |
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168 self.match = match.match(root, '', [], include, exclude) |
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169 |
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170 def copytoui(self, ui): |
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171 for pattern, style in self.cfg.items('patterns'): |
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172 key = style.upper() |
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173 try: |
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174 ui.setconfig('decode', pattern, self._decode[key]) |
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175 ui.setconfig('encode', pattern, self._encode[key]) |
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176 except KeyError: |
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177 ui.warn(_("ignoring unknown EOL style '%s' from %s\n") |
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178 % (style, self.cfg.source('patterns', pattern))) |
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179 # eol.only-consistent can be specified in ~/.hgrc or .hgeol |
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180 for k, v in self.cfg.items('eol'): |
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181 ui.setconfig('eol', k, v) |
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182 |
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183 def checkrev(self, repo, ctx, files): |
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184 failed = [] |
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185 for f in (files or ctx.files()): |
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186 if f not in ctx: |
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187 continue |
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188 for pattern, style in self.cfg.items('patterns'): |
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189 if not match.match(repo.root, '', [pattern])(f): |
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190 continue |
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191 target = self._encode[style.upper()] |
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192 data = ctx[f].data() |
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193 if (target == "to-lf" and "\r\n" in data |
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194 or target == "to-crlf" and singlelf.search(data)): |
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195 failed.append((str(ctx), target, f)) |
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196 break |
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197 return failed |
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198 |
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199 def parseeol(ui, repo, nodes): |
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200 try: |
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201 for node in nodes: |
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202 try: |
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203 if node is None: |
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204 # Cannot use workingctx.data() since it would load |
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205 # and cache the filters before we configure them. |
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206 data = repo.wfile('.hgeol').read() |
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207 else: |
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208 data = repo[node]['.hgeol'].data() |
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209 return eolfile(ui, repo.root, data) |
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210 except (IOError, LookupError): |
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211 pass |
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212 except error.ParseError, inst: |
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213 ui.warn(_("warning: ignoring .hgeol file due to parse error " |
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214 "at %s: %s\n") % (inst.args[1], inst.args[0])) |
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215 return None |
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216 |
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217 def _checkhook(ui, repo, node, headsonly): |
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218 # Get revisions to check and touched files at the same time |
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219 files = set() |
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220 revs = set() |
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221 for rev in xrange(repo[node].rev(), len(repo)): |
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222 revs.add(rev) |
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223 if headsonly: |
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224 ctx = repo[rev] |
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225 files.update(ctx.files()) |
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226 for pctx in ctx.parents(): |
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227 revs.discard(pctx.rev()) |
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228 failed = [] |
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229 for rev in revs: |
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230 ctx = repo[rev] |
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231 eol = parseeol(ui, repo, [ctx.node()]) |
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232 if eol: |
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233 failed.extend(eol.checkrev(repo, ctx, files)) |
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234 |
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235 if failed: |
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236 eols = {'to-lf': 'CRLF', 'to-crlf': 'LF'} |
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237 msgs = [] |
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238 for node, target, f in failed: |
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239 msgs.append(_(" %s in %s should not have %s line endings") % |
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240 (f, node, eols[target])) |
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241 raise util.Abort(_("end-of-line check failed:\n") + "\n".join(msgs)) |
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242 |
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243 def checkallhook(ui, repo, node, hooktype, **kwargs): |
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244 """verify that files have expected EOLs""" |
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245 _checkhook(ui, repo, node, False) |
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246 |
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247 def checkheadshook(ui, repo, node, hooktype, **kwargs): |
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248 """verify that files have expected EOLs""" |
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249 _checkhook(ui, repo, node, True) |
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250 |
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251 # "checkheadshook" used to be called "hook" |
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252 hook = checkheadshook |
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253 |
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254 def preupdate(ui, repo, hooktype, parent1, parent2): |
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255 #print "preupdate for %s: %s -> %s" % (repo.root, parent1, parent2) |
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256 repo.loadeol([parent1]) |
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257 return False |
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258 |
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259 def uisetup(ui): |
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260 ui.setconfig('hooks', 'preupdate.eol', preupdate) |
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261 |
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262 def extsetup(ui): |
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263 try: |
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264 extensions.find('win32text') |
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265 ui.warn(_("the eol extension is incompatible with the " |
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266 "win32text extension\n")) |
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267 except KeyError: |
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268 pass |
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269 |
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270 |
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271 def reposetup(ui, repo): |
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272 uisetup(repo.ui) |
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273 #print "reposetup for", repo.root |
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274 |
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275 if not repo.local(): |
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276 return |
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277 for name, fn in filters.iteritems(): |
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278 repo.adddatafilter(name, fn) |
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279 |
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280 ui.setconfig('patch', 'eol', 'auto') |
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281 |
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282 class eolrepo(repo.__class__): |
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283 |
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284 def loadeol(self, nodes): |
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285 eol = parseeol(self.ui, self, nodes) |
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286 if eol is None: |
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287 return None |
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288 eol.copytoui(self.ui) |
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289 return eol.match |
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290 |
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291 def _hgcleardirstate(self): |
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292 self._eolfile = self.loadeol([None, 'tip']) |
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293 if not self._eolfile: |
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294 self._eolfile = util.never |
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295 return |
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|
296 |
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297 try: |
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298 cachemtime = os.path.getmtime(self.join("eol.cache")) |
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299 except OSError: |
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300 cachemtime = 0 |
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|
301 |
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|
302 try: |
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303 eolmtime = os.path.getmtime(self.wjoin(".hgeol")) |
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304 except OSError: |
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|
305 eolmtime = 0 |
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306 |
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|
307 if eolmtime > cachemtime: |
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308 ui.debug("eol: detected change in .hgeol\n") |
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309 wlock = None |
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310 try: |
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311 wlock = self.wlock() |
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312 for f in self.dirstate: |
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313 if self.dirstate[f] == 'n': |
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314 # all normal files need to be looked at |
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315 # again since the new .hgeol file might no |
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316 # longer match a file it matched before |
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317 self.dirstate.normallookup(f) |
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318 # Touch the cache to update mtime. |
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319 self.opener("eol.cache", "w").close() |
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320 wlock.release() |
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321 except error.LockUnavailable: |
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322 # If we cannot lock the repository and clear the |
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323 # dirstate, then a commit might not see all files |
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324 # as modified. But if we cannot lock the |
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325 # repository, then we can also not make a commit, |
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326 # so ignore the error. |
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|
327 pass |
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|
328 |
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329 def commitctx(self, ctx, error=False): |
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330 for f in sorted(ctx.added() + ctx.modified()): |
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331 if not self._eolfile(f): |
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|
332 continue |
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|
333 try: |
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|
334 data = ctx[f].data() |
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|
335 except IOError: |
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|
336 continue |
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|
337 if util.binary(data): |
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|
338 # We should not abort here, since the user should |
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|
339 # be able to say "** = native" to automatically |
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340 # have all non-binary files taken care of. |
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|
341 continue |
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|
342 if inconsistenteol(data): |
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|
343 raise util.Abort(_("inconsistent newline style " |
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|
344 "in %s\n" % f)) |
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345 return super(eolrepo, self).commitctx(ctx, error) |
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|
346 repo.__class__ = eolrepo |
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|
347 repo._hgcleardirstate() |