Mercurial > hg
annotate hgext/eol.py @ 12062:c327bfa5e831
cleanup: remove unused imports
author | Brodie Rao <brodie@bitheap.org> |
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date | Fri, 27 Aug 2010 13:32:38 -0400 |
parents | 0bb67503ad4b |
children | 2ae4d6c31dcc |
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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 every time you run an ``hg`` command. 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 the line endings used in the |
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15 working directory. The format is specified by a file pattern. The |
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16 first match is used, so put more specific patterns first. The |
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17 available line endings are ``LF``, ``CRLF``, and ``BIN``. |
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18 |
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19 Files with the declared format of ``CRLF`` or ``LF`` are always |
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20 checked out in that format and files declared to be binary (``BIN``) |
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21 are left unchanged. Additionally, ``native`` is an alias for the |
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22 platform's default line ending: ``LF`` on Unix (including Mac OS X) |
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23 and ``CRLF`` on Windows. Note that ``BIN`` (do nothing to line |
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24 endings) is Mercurial's default behaviour; it is only needed if you |
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25 need to override a later, more general pattern. |
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26 |
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27 The optional ``[repository]`` section specifies the line endings to |
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28 use for files stored in the repository. It has a single setting, |
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29 ``native``, which determines the storage line endings for files |
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30 declared as ``native`` in the ``[patterns]`` section. It can be set to |
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31 ``LF`` or ``CRLF``. The default is ``LF``. For example, this means |
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32 that on Windows, files configured as ``native`` (``CRLF`` by default) |
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33 will be converted to ``LF`` when stored in the repository. Files |
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34 declared as ``LF``, ``CRLF``, or ``BIN`` in the ``[patterns]`` section |
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35 are always stored as-is in the repository. |
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36 |
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37 Example versioned ``.hgeol`` file:: |
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38 |
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39 [patterns] |
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40 **.py = native |
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41 **.vcproj = CRLF |
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42 **.txt = native |
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43 Makefile = LF |
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44 **.jpg = BIN |
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45 |
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46 [repository] |
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47 native = LF |
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48 |
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49 The extension uses an optional ``[eol]`` section in your hgrc file |
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50 (not the ``.hgeol`` file) for settings that control the overall |
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51 behavior. There are two settings: |
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52 |
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53 - ``eol.native`` (default ``os.linesep``) can be set to ``LF`` or |
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54 ``CRLF`` override the default interpretation of ``native`` for |
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55 checkout. This can be used with :hg:`archive` on Unix, say, to |
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56 generate an archive where files have line endings for Windows. |
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57 |
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58 - ``eol.only-consistent`` (default True) can be set to False to make |
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59 the extension convert files with inconsistent EOLs. Inconsistent |
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60 means that there is both ``CRLF`` and ``LF`` present in the file. |
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61 Such files are normally not touched under the assumption that they |
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62 have mixed EOLs on purpose. |
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63 |
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64 See :hg:`help patterns` for more information about the glob patterns |
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65 used. |
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66 """ |
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67 |
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68 from mercurial.i18n import _ |
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69 from mercurial import util, config, extensions, match |
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70 import re, os |
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71 |
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72 # Matches a lone LF, i.e., one that is not part of CRLF. |
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73 singlelf = re.compile('(^|[^\r])\n') |
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74 # Matches a single EOL which can either be a CRLF where repeated CR |
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75 # are removed or a LF. We do not care about old Machintosh files, so a |
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76 # stray CR is an error. |
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77 eolre = re.compile('\r*\n') |
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78 |
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79 |
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80 def inconsistenteol(data): |
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81 return '\r\n' in data and singlelf.search(data) |
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82 |
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83 def tolf(s, params, ui, **kwargs): |
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84 """Filter to convert to LF EOLs.""" |
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85 if util.binary(s): |
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86 return s |
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87 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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88 return s |
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89 return eolre.sub('\n', s) |
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90 |
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91 def tocrlf(s, params, ui, **kwargs): |
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92 """Filter to convert to CRLF EOLs.""" |
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93 if util.binary(s): |
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94 return s |
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95 if ui.configbool('eol', 'only-consistent', True) and inconsistenteol(s): |
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96 return s |
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97 return eolre.sub('\r\n', s) |
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98 |
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99 def isbinary(s, params): |
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100 """Filter to do nothing with the file.""" |
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101 return s |
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102 |
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103 filters = { |
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104 'to-lf': tolf, |
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105 'to-crlf': tocrlf, |
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106 'is-binary': isbinary, |
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107 } |
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108 |
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109 |
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110 def hook(ui, repo, node, hooktype, **kwargs): |
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111 """verify that files have expected EOLs""" |
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112 files = set() |
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113 for rev in xrange(repo[node].rev(), len(repo)): |
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114 files.update(repo[rev].files()) |
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115 tip = repo['tip'] |
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116 for f in files: |
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117 if f not in tip: |
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118 continue |
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119 for pattern, target in ui.configitems('encode'): |
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120 if match.match(repo.root, '', [pattern])(f): |
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121 data = tip[f].data() |
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122 if target == "to-lf" and "\r\n" in data: |
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123 raise util.Abort(_("%s should not have CRLF line endings") |
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124 % f) |
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125 elif target == "to-crlf" and singlelf.search(data): |
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126 raise util.Abort(_("%s should not have LF line endings") |
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127 % f) |
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128 |
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129 |
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130 def preupdate(ui, repo, hooktype, parent1, parent2): |
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131 #print "preupdate for %s: %s -> %s" % (repo.root, parent1, parent2) |
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132 repo.readhgeol(parent1) |
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133 return False |
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134 |
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135 def uisetup(ui): |
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136 ui.setconfig('hooks', 'preupdate.eol', preupdate) |
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137 |
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138 def extsetup(ui): |
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139 try: |
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140 extensions.find('win32text') |
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141 raise util.Abort(_("the eol extension is incompatible with the " |
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142 "win32text extension")) |
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143 except KeyError: |
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144 pass |
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145 |
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146 |
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147 def reposetup(ui, repo): |
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148 #print "reposetup for", repo.root |
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149 |
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150 if not repo.local(): |
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151 return |
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152 for name, fn in filters.iteritems(): |
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153 repo.adddatafilter(name, fn) |
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154 |
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155 ui.setconfig('patch', 'eol', 'auto') |
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156 |
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157 class eolrepo(repo.__class__): |
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158 |
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159 _decode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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160 _encode = {'LF': 'to-lf', 'CRLF': 'to-crlf', 'BIN': 'is-binary'} |
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161 |
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162 def readhgeol(self, node=None, data=None): |
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163 if data is None: |
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164 try: |
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165 if node is None: |
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166 data = self.wfile('.hgeol').read() |
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167 else: |
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168 data = self[node]['.hgeol'].data() |
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169 except (IOError, LookupError): |
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170 return None |
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171 |
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172 if self.ui.config('eol', 'native', os.linesep) in ('LF', '\n'): |
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173 self._decode['NATIVE'] = 'to-lf' |
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174 else: |
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175 self._decode['NATIVE'] = 'to-crlf' |
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176 |
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177 eol = config.config() |
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178 eol.parse('.hgeol', data) |
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179 |
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180 if eol.get('repository', 'native') == 'CRLF': |
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181 self._encode['NATIVE'] = 'to-crlf' |
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182 else: |
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183 self._encode['NATIVE'] = 'to-lf' |
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184 |
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185 for pattern, style in eol.items('patterns'): |
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186 key = style.upper() |
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187 try: |
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188 self.ui.setconfig('decode', pattern, self._decode[key]) |
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189 self.ui.setconfig('encode', pattern, self._encode[key]) |
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190 except KeyError: |
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191 self.ui.warn(_("ignoring unknown EOL style '%s' from %s\n") |
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192 % (style, eol.source('patterns', pattern))) |
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193 |
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194 include = [] |
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195 exclude = [] |
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196 for pattern, style in eol.items('patterns'): |
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197 key = style.upper() |
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198 if key == 'BIN': |
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199 exclude.append(pattern) |
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200 else: |
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201 include.append(pattern) |
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202 |
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203 # This will match the files for which we need to care |
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204 # about inconsistent newlines. |
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205 return match.match(self.root, '', [], include, exclude) |
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206 |
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207 def _hgcleardirstate(self): |
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208 self._eolfile = self.readhgeol() or self.readhgeol('tip') |
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209 |
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210 if not self._eolfile: |
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211 self._eolfile = util.never |
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212 return |
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|
213 |
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214 try: |
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215 cachemtime = os.path.getmtime(self.join("eol.cache")) |
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216 except OSError: |
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|
217 cachemtime = 0 |
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|
218 |
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219 try: |
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220 eolmtime = os.path.getmtime(self.wjoin(".hgeol")) |
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221 except OSError: |
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222 eolmtime = 0 |
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223 |
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224 if eolmtime > cachemtime: |
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225 ui.debug("eol: detected change in .hgeol\n") |
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226 # TODO: we could introduce a method for this in dirstate. |
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227 wlock = None |
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228 try: |
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229 wlock = self.wlock() |
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230 for f, e in self.dirstate._map.iteritems(): |
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231 self.dirstate._map[f] = (e[0], e[1], -1, 0) |
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232 self.dirstate._dirty = True |
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233 # Touch the cache to update mtime. TODO: are we sure this |
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234 # always enought to update the mtime, or should we write a |
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235 # bit to the file? |
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|
236 self.opener("eol.cache", "w").close() |
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237 finally: |
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238 if wlock is not None: |
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|
239 wlock.release() |
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|
240 |
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241 def commitctx(self, ctx, error=False): |
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242 for f in sorted(ctx.added() + ctx.modified()): |
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243 if not self._eolfile(f): |
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|
244 continue |
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245 data = ctx[f].data() |
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246 if util.binary(data): |
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247 # We should not abort here, since the user should |
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248 # be able to say "** = native" to automatically |
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249 # have all non-binary files taken care of. |
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250 continue |
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|
251 if inconsistenteol(data): |
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|
252 raise util.Abort(_("inconsistent newline style " |
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|
253 "in %s\n" % f)) |
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|
254 return super(eolrepo, self).commitctx(ctx, error) |
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|
255 repo.__class__ = eolrepo |
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|
256 repo._hgcleardirstate() |