Mercurial > hg
annotate hgext/win32text.py @ 8861:90f74b31ed4f
filemerge: fix internal:dump
author | Matt Mackall <mpm@selenic.com> |
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date | Sat, 20 Jun 2009 16:42:51 -0500 |
parents | e553fe565c61 |
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1 # win32text.py - LF <-> CRLF/CR translation utilities for Windows/Mac users |
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2 # |
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3 # Copyright 2005, 2007-2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2, incorporated herein by reference. |
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7 # |
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8 # To perform automatic newline conversion, use: |
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9 # |
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10 # [extensions] |
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11 # hgext.win32text = |
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12 # [encode] |
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13 # ** = cleverencode: |
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14 # # or ** = macencode: |
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15 # [decode] |
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16 # ** = cleverdecode: |
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17 # # or ** = macdecode: |
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18 # |
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19 # If not doing conversion, to make sure you do not commit CRLF/CR by |
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20 # accident: |
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21 # |
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22 # [hooks] |
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23 # pretxncommit.crlf = python:hgext.win32text.forbidcrlf |
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24 # # or pretxncommit.cr = python:hgext.win32text.forbidcr |
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25 # |
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26 # To do the same check on a server to prevent CRLF/CR from being |
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27 # pushed or pulled: |
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28 # |
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29 # [hooks] |
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30 # pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf |
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31 # # or pretxnchangegroup.cr = python:hgext.win32text.forbidcr |
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32 |
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33 from mercurial.i18n import _ |
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34 from mercurial.node import short |
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35 from mercurial import util |
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36 import re |
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37 |
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38 # regexp for single LF without CR preceding. |
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39 re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE) |
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40 |
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41 newlinestr = {'\r\n': 'CRLF', '\r': 'CR'} |
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42 filterstr = {'\r\n': 'clever', '\r': 'mac'} |
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43 |
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44 def checknewline(s, newline, ui=None, repo=None, filename=None): |
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45 # warn if already has 'newline' in repository. |
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46 # it might cause unexpected eol conversion. |
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47 # see issue 302: |
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48 # http://www.selenic.com/mercurial/bts/issue302 |
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49 if newline in s and ui and filename and repo: |
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50 ui.warn(_('WARNING: %s already has %s line endings\n' |
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51 'and does not need EOL conversion by the win32text plugin.\n' |
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52 'Before your next commit, please reconsider your ' |
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53 'encode/decode settings in \nMercurial.ini or %s.\n') % |
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54 (filename, newlinestr[newline], repo.join('hgrc'))) |
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55 |
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56 def dumbdecode(s, cmd, **kwargs): |
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57 checknewline(s, '\r\n', **kwargs) |
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58 # replace single LF to CRLF |
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59 return re_single_lf.sub('\\1\r\n', s) |
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60 |
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61 def dumbencode(s, cmd): |
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62 return s.replace('\r\n', '\n') |
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63 |
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64 def macdumbdecode(s, cmd, **kwargs): |
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65 checknewline(s, '\r', **kwargs) |
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66 return s.replace('\n', '\r') |
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67 |
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68 def macdumbencode(s, cmd): |
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69 return s.replace('\r', '\n') |
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70 |
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71 def cleverdecode(s, cmd, **kwargs): |
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72 if not util.binary(s): |
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73 return dumbdecode(s, cmd, **kwargs) |
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74 return s |
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75 |
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76 def cleverencode(s, cmd): |
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77 if not util.binary(s): |
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78 return dumbencode(s, cmd) |
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79 return s |
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80 |
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81 def macdecode(s, cmd, **kwargs): |
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82 if not util.binary(s): |
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84 return s | |
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85 |
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86 def macencode(s, cmd): |
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87 if not util.binary(s): |
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89 return s | |
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90 |
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91 _filters = { |
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92 'dumbdecode:': dumbdecode, |
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93 'dumbencode:': dumbencode, |
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94 'cleverdecode:': cleverdecode, |
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95 'cleverencode:': cleverencode, |
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96 'macdumbdecode:': macdumbdecode, |
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97 'macdumbencode:': macdumbencode, |
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98 'macdecode:': macdecode, |
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99 'macencode:': macencode, |
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100 } |
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101 |
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102 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): |
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103 halt = False |
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104 seen = set() |
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105 # we try to walk changesets in reverse order from newest to |
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106 # oldest, so that if we see a file multiple times, we take the |
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107 # newest version as canonical. this prevents us from blocking a |
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108 # changegroup that contains an unacceptable commit followed later |
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109 # by a commit that fixes the problem. |
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110 tip = repo['tip'] |
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111 for rev in xrange(len(repo)-1, repo[node].rev()-1, -1): |
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112 c = repo[rev] |
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113 for f in c.files(): |
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114 if f in seen or f not in tip or f not in c: |
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115 continue |
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116 seen.add(f) |
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117 data = c[f].data() |
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118 if not util.binary(data) and newline in data: |
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119 if not halt: |
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120 ui.warn(_('Attempt to commit or push text file(s) ' |
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121 'using %s line endings\n') % |
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122 newlinestr[newline]) |
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123 ui.warn(_('in %s: %s\n') % (short(c.node()), f)) |
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124 halt = True |
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125 if halt and hooktype == 'pretxnchangegroup': |
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126 crlf = newlinestr[newline].lower() |
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127 filter = filterstr[newline] |
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128 ui.warn(_('\nTo prevent this mistake in your local repository,\n' |
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129 'add to Mercurial.ini or .hg/hgrc:\n' |
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130 '\n' |
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131 '[hooks]\n' |
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132 'pretxncommit.%s = python:hgext.win32text.forbid%s\n' |
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133 '\n' |
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134 'and also consider adding:\n' |
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135 '\n' |
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136 '[extensions]\n' |
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137 'hgext.win32text =\n' |
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138 '[encode]\n' |
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139 '** = %sencode:\n' |
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140 '[decode]\n' |
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141 '** = %sdecode:\n') % (crlf, crlf, filter, filter)) |
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142 return halt |
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143 |
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144 def forbidcrlf(ui, repo, hooktype, node, **kwargs): |
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145 return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs) |
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146 |
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147 def forbidcr(ui, repo, hooktype, node, **kwargs): |
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148 return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs) |
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149 |
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150 def reposetup(ui, repo): |
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151 if not repo.local(): |
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152 return |
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153 for name, fn in _filters.iteritems(): |
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154 repo.adddatafilter(name, fn) |
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155 |