annotate hgext/eol.py @ 13617:9cb1a42cd4b3

eol: rename hook into checkheadshook, add checkallhook (issue2665) "hook" is still an alias for "checkheadshook".
author Patrick Mezard <pmezard@gmail.com>
date Sun, 13 Mar 2011 15:07:44 +0100
parents e6f93ca9ce86
children 8aec2516602b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 in your hgrc file
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56 (not the ``.hgeol`` file) for settings that control the overall
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57 behavior. There are two settings:
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58
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59 - ``eol.native`` (default ``os.linesep``) can be set to ``LF`` or
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60 ``CRLF`` to override the default interpretation of ``native`` for
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61 checkout. This can be used with :hg:`archive` on Unix, say, to
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62 generate an archive where files have line endings for Windows.
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63
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64 - ``eol.only-consistent`` (default True) can be set to False to make
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65 the extension convert files with inconsistent EOLs. Inconsistent
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66 means that there is both ``CRLF`` and ``LF`` present in the file.
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67 Such files are normally not touched under the assumption that they
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68 have mixed EOLs on purpose.
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69
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70 The extension provides ``cleverencode:`` and ``cleverdecode:`` filters
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71 like the deprecated win32text extension does. This means that you can
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72 disable win32text and enable eol and your filters will still work. You
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73 only need to these filters until you have prepared a ``.hgeol`` file.
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74
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75 The ``win32text.forbid*`` hooks provided by the win32text extension
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76 have been unified into a single hook named ``eol.checkheadshook``. The
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77 hook will lookup the expected line endings from the ``.hgeol`` file,
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78 which means you must migrate to a ``.hgeol`` file first before using
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79 the hook. ``eol.checkheadshook`` only checks heads, intermediate
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80 invalid revisions will be pushed. To forbid them completely, use the
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81 ``eol.checkallhook`` hook. These hooks are best used as
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82 ``pretxnchangegroup`` hooks.
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83
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84 See :hg:`help patterns` for more information about the glob patterns
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85 used.
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86 """
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87
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88 from mercurial.i18n import _
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89 from mercurial import util, config, extensions, match, error
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90 import re, os
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91
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92 # Matches a lone LF, i.e., one that is not part of CRLF.
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93 singlelf = re.compile('(^|[^\r])\n')
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94 # Matches a single EOL which can either be a CRLF where repeated CR
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95 # are removed or a LF. We do not care about old Machintosh files, so a
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96 # stray CR is an error.
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97 eolre = re.compile('\r*\n')
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98
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99
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100 def inconsistenteol(data):
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101 return '\r\n' in data and singlelf.search(data)
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102
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103 def tolf(s, params, ui, **kwargs):
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104 """Filter to convert to LF EOLs."""
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105 if util.binary(s):
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106 return s
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107 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s):
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108 return s
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109 return eolre.sub('\n', s)
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110
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111 def tocrlf(s, params, ui, **kwargs):
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112 """Filter to convert to CRLF 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
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117 return eolre.sub('\r\n', s)
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118
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119 def isbinary(s, params):
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120 """Filter to do nothing with the file."""
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121 return s
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122
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123 filters = {
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124 'to-lf': tolf,
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125 'to-crlf': tocrlf,
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126 'is-binary': isbinary,
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127 # The following provide backwards compatibility with win32text
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128 'cleverencode:': tolf,
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129 'cleverdecode:': tocrlf
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130 }
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131
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132 class eolfile(object):
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133 def __init__(self, ui, root, data):
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134 self._decode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'}
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135 self._encode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'}
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diff changeset
136
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parents: 13612
diff changeset
137 self.cfg = config.config()
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diff changeset
138 # Our files should not be touched. The pattern must be
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parents: 13612
diff changeset
139 # inserted first override a '** = native' pattern.
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diff changeset
140 self.cfg.set('patterns', '.hg*', 'BIN')
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diff changeset
141 # We can then parse the user's patterns.
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diff changeset
142 self.cfg.parse('.hgeol', data)
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parents: 13612
diff changeset
143
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diff changeset
144 isrepolf = self.cfg.get('repository', 'native') != 'CRLF'
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diff changeset
145 self._encode['NATIVE'] = isrepolf and 'to-lf' or 'to-crlf'
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parents: 13612
diff changeset
146 iswdlf = ui.config('eol', 'native', os.linesep) in ('LF', '\n')
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diff changeset
147 self._decode['NATIVE'] = iswdlf and 'to-lf' or 'to-crlf'
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diff changeset
148
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diff changeset
149 include = []
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diff changeset
150 exclude = []
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diff changeset
151 for pattern, style in self.cfg.items('patterns'):
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diff changeset
152 key = style.upper()
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diff changeset
153 if key == 'BIN':
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diff changeset
154 exclude.append(pattern)
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diff changeset
155 else:
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diff changeset
156 include.append(pattern)
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diff changeset
157 # This will match the files for which we need to care
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diff changeset
158 # about inconsistent newlines.
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diff changeset
159 self.match = match.match(root, '', [], include, exclude)
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diff changeset
160
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diff changeset
161 def setfilters(self, ui):
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diff changeset
162 for pattern, style in self.cfg.items('patterns'):
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diff changeset
163 key = style.upper()
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diff changeset
164 try:
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165 ui.setconfig('decode', pattern, self._decode[key])
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166 ui.setconfig('encode', pattern, self._encode[key])
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diff changeset
167 except KeyError:
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168 ui.warn(_("ignoring unknown EOL style '%s' from %s\n")
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diff changeset
169 % (style, self.cfg.source('patterns', pattern)))
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170
13615
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171 def checkrev(self, repo, ctx, files):
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172 for f in files:
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Patrick Mezard <pmezard@gmail.com>
parents: 13614
diff changeset
173 if f not in ctx:
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Patrick Mezard <pmezard@gmail.com>
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diff changeset
174 continue
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175 for pattern, style in self.cfg.items('patterns'):
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diff changeset
176 if not match.match(repo.root, '', [pattern])(f):
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177 continue
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178 target = self._encode[style.upper()]
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179 data = ctx[f].data()
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180 if target == "to-lf" and "\r\n" in data:
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diff changeset
181 raise util.Abort(_("%s should not have CRLF line endings")
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Patrick Mezard <pmezard@gmail.com>
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182 % f)
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Patrick Mezard <pmezard@gmail.com>
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183 elif target == "to-crlf" and singlelf.search(data):
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184 raise util.Abort(_("%s should not have LF line endings")
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Patrick Mezard <pmezard@gmail.com>
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185 % f)
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Patrick Mezard <pmezard@gmail.com>
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186 # Ignore other rules for this file
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187 break
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188
13614
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diff changeset
189 def parseeol(ui, repo, nodes):
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diff changeset
190 try:
13614
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diff changeset
191 for node in nodes:
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diff changeset
192 try:
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diff changeset
193 if node is None:
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diff changeset
194 # Cannot use workingctx.data() since it would load
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195 # and cache the filters before we configure them.
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diff changeset
196 data = repo.wfile('.hgeol').read()
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diff changeset
197 else:
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diff changeset
198 data = repo[node]['.hgeol'].data()
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diff changeset
199 return eolfile(ui, repo.root, data)
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diff changeset
200 except (IOError, LookupError):
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diff changeset
201 pass
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Patrick Mezard <pmezard@gmail.com>
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diff changeset
202 except error.ParseError, inst:
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diff changeset
203 ui.warn(_("warning: ignoring .hgeol file due to parse error "
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diff changeset
204 "at %s: %s\n") % (inst.args[1], inst.args[0]))
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diff changeset
205 return None
11249
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parents:
diff changeset
206
13617
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diff changeset
207 def _checkhook(ui, repo, node, headsonly):
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diff changeset
208 # Get revisions to check and touched files at the same time
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parents:
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209 files = set()
13617
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diff changeset
210 revs = set()
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parents:
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211 for rev in xrange(repo[node].rev(), len(repo)):
13616
e6f93ca9ce86 eol: make the hook check all new heads, not only tip (issue2666)
Patrick Mezard <pmezard@gmail.com>
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diff changeset
212 ctx = repo[rev]
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Patrick Mezard <pmezard@gmail.com>
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diff changeset
213 files.update(ctx.files())
13617
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diff changeset
214 revs.add(rev)
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
215 if headsonly:
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
216 for pctx in ctx.parents():
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
217 revs.discard(pctx.rev())
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
218 for rev in revs:
13616
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Patrick Mezard <pmezard@gmail.com>
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diff changeset
219 ctx = repo[rev]
e6f93ca9ce86 eol: make the hook check all new heads, not only tip (issue2666)
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parents: 13615
diff changeset
220 eol = parseeol(ui, repo, [ctx.node()])
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Patrick Mezard <pmezard@gmail.com>
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diff changeset
221 if eol:
e6f93ca9ce86 eol: make the hook check all new heads, not only tip (issue2666)
Patrick Mezard <pmezard@gmail.com>
parents: 13615
diff changeset
222 eol.checkrev(repo, ctx, files)
11249
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parents:
diff changeset
223
13617
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parents: 13616
diff changeset
224 def checkallhook(ui, repo, node, hooktype, **kwargs):
9cb1a42cd4b3 eol: rename hook into checkheadshook, add checkallhook (issue2665)
Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
225 """verify that files have expected EOLs"""
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
226 _checkhook(ui, repo, node, False)
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
227
9cb1a42cd4b3 eol: rename hook into checkheadshook, add checkallhook (issue2665)
Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
228 def checkheadshook(ui, repo, node, hooktype, **kwargs):
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
229 """verify that files have expected EOLs"""
9cb1a42cd4b3 eol: rename hook into checkheadshook, add checkallhook (issue2665)
Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
230 _checkhook(ui, repo, node, True)
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
231
9cb1a42cd4b3 eol: rename hook into checkheadshook, add checkallhook (issue2665)
Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
232 # "checkheadshook" used to be called "hook"
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Patrick Mezard <pmezard@gmail.com>
parents: 13616
diff changeset
233 hook = checkheadshook
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diff changeset
234
11249
0bb67503ad4b eol: extension for managing file EOLs
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parents:
diff changeset
235 def preupdate(ui, repo, hooktype, parent1, parent2):
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
236 #print "preupdate for %s: %s -> %s" % (repo.root, parent1, parent2)
13614
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diff changeset
237 repo.loadeol([parent1])
11249
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
238 return False
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
239
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
240 def uisetup(ui):
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
241 ui.setconfig('hooks', 'preupdate.eol', preupdate)
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
242
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
243 def extsetup(ui):
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
244 try:
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
245 extensions.find('win32text')
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
246 raise util.Abort(_("the eol extension is incompatible with the "
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
247 "win32text extension"))
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
248 except KeyError:
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
249 pass
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
250
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
251
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
252 def reposetup(ui, repo):
12307
0852da25a31b eol: setup the repo.ui in reposetup()
Steve Borho <steve@borho.org>
parents: 11249
diff changeset
253 uisetup(repo.ui)
11249
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Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
254 #print "reposetup for", repo.root
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Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
255
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
256 if not repo.local():
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
257 return
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
258 for name, fn in filters.iteritems():
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
259 repo.adddatafilter(name, fn)
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Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
260
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
261 ui.setconfig('patch', 'eol', 'auto')
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
262
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
263 class eolrepo(repo.__class__):
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
264
13614
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diff changeset
265 def loadeol(self, nodes):
40d0cf79cb2c eol: extract parsing error handling in parseeol()
Patrick Mezard <pmezard@gmail.com>
parents: 13613
diff changeset
266 eol = parseeol(self.ui, self, nodes)
13613
85b80261ca10 eol: separate .hgeol parsing from merge in ui
Patrick Mezard <pmezard@gmail.com>
parents: 13612
diff changeset
267 if eol is None:
13612
21367c3da8aa eol: remove unused argument in readhgeol()
Patrick Mezard <pmezard@gmail.com>
parents: 13611
diff changeset
268 return None
13613
85b80261ca10 eol: separate .hgeol parsing from merge in ui
Patrick Mezard <pmezard@gmail.com>
parents: 13612
diff changeset
269 eol.setfilters(self.ui)
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270 return eol.match
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271
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272 def _hgcleardirstate(self):
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40d0cf79cb2c eol: extract parsing error handling in parseeol()
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273 self._eolfile = self.loadeol([None, 'tip'])
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274 if not self._eolfile:
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275 self._eolfile = util.never
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276 return
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277
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278 try:
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279 cachemtime = os.path.getmtime(self.join("eol.cache"))
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280 except OSError:
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281 cachemtime = 0
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282
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283 try:
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284 eolmtime = os.path.getmtime(self.wjoin(".hgeol"))
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285 except OSError:
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286 eolmtime = 0
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287
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288 if eolmtime > cachemtime:
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289 ui.debug("eol: detected change in .hgeol\n")
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290 wlock = None
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291 try:
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292 wlock = self.wlock()
13581
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293 for f in self.dirstate:
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294 if self.dirstate[f] == 'n':
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295 # all normal files need to be looked at
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296 # again since the new .hgeol file might no
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297 # longer match a file it matched before
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298 self.dirstate.normallookup(f)
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299 # Touch the cache to update mtime.
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300 self.opener("eol.cache", "w").close()
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diff changeset
301 wlock.release()
c7bef25ca393 eol: handle LockUnavailable error (issue2569)
Martin Geisler <mg@aragost.com>
parents: 13471
diff changeset
302 except error.LockUnavailable:
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Martin Geisler <mg@aragost.com>
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303 # If we cannot lock the repository and clear the
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Martin Geisler <mg@aragost.com>
parents: 13471
diff changeset
304 # dirstate, then a commit might not see all files
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Martin Geisler <mg@aragost.com>
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305 # as modified. But if we cannot lock the
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Martin Geisler <mg@aragost.com>
parents: 13471
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306 # repository, then we can also not make a commit,
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Martin Geisler <mg@aragost.com>
parents: 13471
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307 # so ignore the error.
c7bef25ca393 eol: handle LockUnavailable error (issue2569)
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parents: 13471
diff changeset
308 pass
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309
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310 def commitctx(self, ctx, error=False):
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parents:
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311 for f in sorted(ctx.added() + ctx.modified()):
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parents:
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312 if not self._eolfile(f):
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parents:
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313 continue
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parents:
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314 data = ctx[f].data()
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315 if util.binary(data):
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parents:
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316 # We should not abort here, since the user should
0bb67503ad4b eol: extension for managing file EOLs
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parents:
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317 # be able to say "** = native" to automatically
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
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318 # have all non-binary files taken care of.
0bb67503ad4b eol: extension for managing file EOLs
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parents:
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319 continue
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parents:
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320 if inconsistenteol(data):
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parents:
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321 raise util.Abort(_("inconsistent newline style "
0bb67503ad4b eol: extension for managing file EOLs
Martin Geisler <mg@lazybytes.net>
parents:
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322 "in %s\n" % f))
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Martin Geisler <mg@lazybytes.net>
parents:
diff changeset
323 return super(eolrepo, self).commitctx(ctx, error)
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Martin Geisler <mg@lazybytes.net>
parents:
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324 repo.__class__ = eolrepo
0bb67503ad4b eol: extension for managing file EOLs
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parents:
diff changeset
325 repo._hgcleardirstate()