Mercurial > hg
annotate mercurial/windows.py @ 11578:bb7af1de5e38
discovery: remove duplication for new remote head discovery
author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
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date | Thu, 15 Jul 2010 21:44:51 +0200 |
parents | 99eee847beaa |
children | 516b000fbb7e |
rev | line source |
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1 # windows.py - Windows utility function implementations for Mercurial |
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2 # |
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3 # Copyright 2005-2009 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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from i18n import _ |
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9 import osutil, error |
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10 import errno, msvcrt, os, re, sys, random, subprocess |
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11 |
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12 nulldev = 'NUL:' |
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13 umask = 002 |
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14 |
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15 # wrap osutil.posixfile to provide friendlier exceptions |
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16 def posixfile(name, mode='r', buffering=-1): |
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17 try: |
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18 return osutil.posixfile(name, mode, buffering) |
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19 except WindowsError, err: |
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20 raise IOError(err.errno, '%s: %s' % (name, err.strerror)) |
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21 posixfile.__doc__ = osutil.posixfile.__doc__ |
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22 |
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23 class winstdout(object): |
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24 '''stdout on windows misbehaves if sent through a pipe''' |
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25 |
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26 def __init__(self, fp): |
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27 self.fp = fp |
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28 |
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29 def __getattr__(self, key): |
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30 return getattr(self.fp, key) |
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31 |
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32 def close(self): |
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33 try: |
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34 self.fp.close() |
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35 except: pass |
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36 |
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37 def write(self, s): |
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38 try: |
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39 # This is workaround for "Not enough space" error on |
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40 # writing large size of data to console. |
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41 limit = 16000 |
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42 l = len(s) |
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43 start = 0 |
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44 self.softspace = 0 |
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45 while start < l: |
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46 end = start + limit |
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47 self.fp.write(s[start:end]) |
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48 start = end |
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49 except IOError, inst: |
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50 if inst.errno != 0: |
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51 raise |
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52 self.close() |
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53 raise IOError(errno.EPIPE, 'Broken pipe') |
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54 |
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55 def flush(self): |
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56 try: |
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57 return self.fp.flush() |
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58 except IOError, inst: |
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59 if inst.errno != errno.EINVAL: |
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60 raise |
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61 self.close() |
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62 raise IOError(errno.EPIPE, 'Broken pipe') |
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63 |
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64 sys.stdout = winstdout(sys.stdout) |
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65 |
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66 def _is_win_9x(): |
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67 '''return true if run on windows 95, 98 or me.''' |
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68 try: |
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69 return sys.getwindowsversion()[3] == 1 |
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70 except AttributeError: |
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71 return 'command' in os.environ.get('comspec', '') |
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72 |
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73 def openhardlinks(): |
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74 return not _is_win_9x() and "win32api" in globals() |
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75 |
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76 def system_rcpath(): |
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77 try: |
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78 return system_rcpath_win32() |
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79 except: |
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80 return [r'c:\mercurial\mercurial.ini'] |
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81 |
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82 def user_rcpath(): |
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83 '''return os-specific hgrc search path to the user dir''' |
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84 try: |
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85 path = user_rcpath_win32() |
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86 except: |
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87 home = os.path.expanduser('~') |
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88 path = [os.path.join(home, 'mercurial.ini'), |
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89 os.path.join(home, '.hgrc')] |
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90 userprofile = os.environ.get('USERPROFILE') |
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91 if userprofile: |
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92 path.append(os.path.join(userprofile, 'mercurial.ini')) |
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93 path.append(os.path.join(userprofile, '.hgrc')) |
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94 return path |
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95 |
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96 def parse_patch_output(output_line): |
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97 """parses the output produced by patch and returns the filename""" |
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98 pf = output_line[14:] |
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99 if pf[0] == '`': |
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100 pf = pf[1:-1] # Remove the quotes |
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101 return pf |
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102 |
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103 def sshargs(sshcmd, host, user, port): |
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104 '''Build argument list for ssh or Plink''' |
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105 pflag = 'plink' in sshcmd.lower() and '-P' or '-p' |
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106 args = user and ("%s@%s" % (user, host)) or host |
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107 return port and ("%s %s %s" % (args, pflag, port)) or args |
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108 |
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109 def testpid(pid): |
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110 '''return False if pid dead, True if running or not known''' |
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111 return True |
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112 |
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113 def set_flags(f, l, x): |
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114 pass |
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115 |
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116 def set_binary(fd): |
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117 # When run without console, pipes may expose invalid |
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118 # fileno(), usually set to -1. |
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119 if hasattr(fd, 'fileno') and fd.fileno() >= 0: |
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120 msvcrt.setmode(fd.fileno(), os.O_BINARY) |
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121 |
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122 def pconvert(path): |
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123 return '/'.join(path.split(os.sep)) |
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124 |
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125 def localpath(path): |
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126 return path.replace('/', '\\') |
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127 |
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128 def normpath(path): |
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129 return pconvert(os.path.normpath(path)) |
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130 |
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131 def realpath(path): |
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132 ''' |
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133 Returns the true, canonical file system path equivalent to the given |
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134 path. |
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135 ''' |
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136 # TODO: There may be a more clever way to do this that also handles other, |
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137 # less common file systems. |
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138 return os.path.normpath(os.path.normcase(os.path.realpath(path))) |
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139 |
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140 def samestat(s1, s2): |
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141 return False |
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142 |
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143 # A sequence of backslashes is special iff it precedes a double quote: |
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144 # - if there's an even number of backslashes, the double quote is not |
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145 # quoted (i.e. it ends the quoted region) |
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146 # - if there's an odd number of backslashes, the double quote is quoted |
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147 # - in both cases, every pair of backslashes is unquoted into a single |
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148 # backslash |
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149 # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) |
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150 # So, to quote a string, we must surround it in double quotes, double |
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151 # the number of backslashes that preceed double quotes and add another |
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152 # backslash before every double quote (being careful with the double |
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153 # quote we've appended to the end) |
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154 _quotere = None |
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155 def shellquote(s): |
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156 global _quotere |
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157 if _quotere is None: |
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158 _quotere = re.compile(r'(\\*)("|\\$)') |
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159 return '"%s"' % _quotere.sub(r'\1\1\\\2', s) |
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160 |
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161 def quotecommand(cmd): |
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162 """Build a command string suitable for os.popen* calls.""" |
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163 # The extra quotes are needed because popen* runs the command |
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164 # through the current COMSPEC. cmd.exe suppress enclosing quotes. |
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165 return '"' + cmd + '"' |
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166 |
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167 def popen(command, mode='r'): |
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168 # Work around "popen spawned process may not write to stdout |
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169 # under windows" |
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170 # http://bugs.python.org/issue1366 |
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171 command += " 2> %s" % nulldev |
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172 return os.popen(quotecommand(command), mode) |
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173 |
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174 def explain_exit(code): |
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175 return _("exited with status %d") % code, code |
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176 |
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177 # if you change this stub into a real check, please try to implement the |
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178 # username and groupname functions above, too. |
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179 def isowner(st): |
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180 return True |
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181 |
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182 def find_exe(command): |
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183 '''Find executable for command searching like cmd.exe does. |
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184 If command is a basename then PATH is searched for command. |
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185 PATH isn't searched if command is an absolute or relative path. |
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186 An extension from PATHEXT is found and added if not present. |
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187 If command isn't found None is returned.''' |
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188 pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') |
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189 pathexts = [ext for ext in pathext.lower().split(os.pathsep)] |
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190 if os.path.splitext(command)[1].lower() in pathexts: |
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191 pathexts = [''] |
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192 |
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193 def findexisting(pathcommand): |
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194 'Will append extension (if needed) and return existing file' |
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195 for ext in pathexts: |
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196 executable = pathcommand + ext |
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197 if os.path.exists(executable): |
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198 return executable |
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199 return None |
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200 |
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201 if os.sep in command: |
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202 return findexisting(command) |
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203 |
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204 for path in os.environ.get('PATH', '').split(os.pathsep): |
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205 executable = findexisting(os.path.join(path, command)) |
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206 if executable is not None: |
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207 return executable |
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208 return findexisting(os.path.expanduser(os.path.expandvars(command))) |
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209 |
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210 def set_signal_handler(): |
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211 try: |
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212 set_signal_handler_win32() |
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213 except NameError: |
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214 pass |
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215 |
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216 def statfiles(files): |
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217 '''Stat each file in files and yield stat or None if file does not exist. |
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218 Cluster and cache stat per directory to minimize number of OS stat calls.''' |
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219 ncase = os.path.normcase |
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220 dircache = {} # dirname -> filename -> status | None if file does not exist |
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221 for nf in files: |
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222 nf = ncase(nf) |
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223 dir, base = os.path.split(nf) |
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224 if not dir: |
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225 dir = '.' |
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226 cache = dircache.get(dir, None) |
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227 if cache is None: |
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228 try: |
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229 dmap = dict([(ncase(n), s) |
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230 for n, k, s in osutil.listdir(dir, True)]) |
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231 except OSError, err: |
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232 # handle directory not found in Python version prior to 2.5 |
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233 # Python <= 2.4 returns native Windows code 3 in errno |
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234 # Python >= 2.5 returns ENOENT and adds winerror field |
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235 # EINVAL is raised if dir is not a directory. |
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236 if err.errno not in (3, errno.ENOENT, errno.EINVAL, |
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237 errno.ENOTDIR): |
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238 raise |
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239 dmap = {} |
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240 cache = dircache.setdefault(dir, dmap) |
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241 yield cache.get(base, None) |
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242 |
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243 def getuser(): |
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244 '''return name of current user''' |
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245 raise error.Abort(_('user name not available - set USERNAME ' |
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246 'environment variable')) |
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247 |
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248 def username(uid=None): |
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249 """Return the name of the user with the given uid. |
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250 |
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251 If uid is None, return the name of the current user.""" |
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252 return None |
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253 |
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254 def groupname(gid=None): |
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255 """Return the name of the group with the given gid. |
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256 |
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257 If gid is None, return the name of the current group.""" |
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258 return None |
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259 |
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260 def _removedirs(name): |
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261 """special version of os.removedirs that does not remove symlinked |
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262 directories or junction points if they actually contain files""" |
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263 if osutil.listdir(name): |
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264 return |
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265 os.rmdir(name) |
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266 head, tail = os.path.split(name) |
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267 if not tail: |
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268 head, tail = os.path.split(head) |
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269 while head and tail: |
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270 try: |
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271 if osutil.listdir(head): |
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272 return |
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273 os.rmdir(head) |
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274 except: |
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275 break |
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276 head, tail = os.path.split(head) |
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277 |
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278 def unlink(f): |
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279 """unlink and remove the directory if it is empty""" |
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280 os.unlink(f) |
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281 # try removing directories that might now be empty |
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282 try: |
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283 _removedirs(os.path.dirname(f)) |
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284 except OSError: |
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285 pass |
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286 |
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287 def rename(src, dst): |
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288 '''atomically rename file src to dst, replacing dst if it exists''' |
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289 try: |
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290 os.rename(src, dst) |
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291 except OSError, err: # FIXME: check err (EEXIST ?) |
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292 |
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293 # On windows, rename to existing file is not allowed, so we |
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294 # must delete destination first. But if a file is open, unlink |
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295 # schedules it for delete but does not delete it. Rename |
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296 # happens immediately even for open files, so we rename |
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297 # destination to a temporary name, then delete that. Then |
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298 # rename is safe to do. |
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299 # The temporary name is chosen at random to avoid the situation |
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300 # where a file is left lying around from a previous aborted run. |
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301 # The usual race condition this introduces can't be avoided as |
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302 # we need the name to rename into, and not the file itself. Due |
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303 # to the nature of the operation however, any races will at worst |
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304 # lead to the rename failing and the current operation aborting. |
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305 |
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306 def tempname(prefix): |
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307 for tries in xrange(10): |
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308 temp = '%s-%08x' % (prefix, random.randint(0, 0xffffffff)) |
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309 if not os.path.exists(temp): |
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310 return temp |
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311 raise IOError, (errno.EEXIST, "No usable temporary filename found") |
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312 |
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313 temp = tempname(dst) |
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314 os.rename(dst, temp) |
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315 try: |
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316 os.unlink(temp) |
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317 except: |
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318 # Some rude AV-scanners on Windows may cause the unlink to |
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319 # fail. Not aborting here just leaks the temp file, whereas |
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320 # aborting at this point may leave serious inconsistencies. |
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321 # Ideally, we would notify the user here. |
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322 pass |
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323 os.rename(src, dst) |
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324 |
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325 def spawndetached(args): |
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326 # No standard library function really spawns a fully detached |
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327 # process under win32 because they allocate pipes or other objects |
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328 # to handle standard streams communications. Passing these objects |
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329 # to the child process requires handle inheritance to be enabled |
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330 # which makes really detached processes impossible. |
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331 class STARTUPINFO: |
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332 dwFlags = subprocess.STARTF_USESHOWWINDOW |
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333 hStdInput = None |
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334 hStdOutput = None |
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335 hStdError = None |
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336 wShowWindow = subprocess.SW_HIDE |
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337 |
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338 args = subprocess.list2cmdline(args) |
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339 # Not running the command in shell mode makes python26 hang when |
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340 # writing to hgweb output socket. |
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341 comspec = os.environ.get("COMSPEC", "cmd.exe") |
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342 args = comspec + " /c " + args |
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343 hp, ht, pid, tid = subprocess.CreateProcess( |
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344 None, args, |
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345 # no special security |
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346 None, None, |
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347 # Do not inherit handles |
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348 0, |
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349 # DETACHED_PROCESS |
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350 0x00000008, |
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351 os.environ, |
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352 os.getcwd(), |
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353 STARTUPINFO()) |
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354 return pid |
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355 |
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356 def gethgcmd(): |
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357 return [sys.executable] + sys.argv[:1] |
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358 |
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359 def termwidth_(): |
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360 # cmd.exe does not handle CR like a unix console, the CR is |
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361 # counted in the line length. On 80 columns consoles, if 80 |
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362 # characters are written, the following CR won't apply on the |
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Patrick Mezard <pmezard@gmail.com>
parents:
10394
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363 # current line but on the new one. Keep room for it. |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10394
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364 return 79 |
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10394
diff
changeset
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365 |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11010
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366 def groupmembers(name): |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11010
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367 # Don't support groups on Windows for now |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
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368 raise KeyError() |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11010
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changeset
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369 |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
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370 try: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
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371 # override functions with win32 versions if possible |
7932
96501a4abbec
windows: fix import of win32.py (was util_win32.py)
Sune Foldager <cryo@cyanite.org>
parents:
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372 from win32 import * |
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
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373 except ImportError: |
8421
b6d0fa8c7685
posixfile: remove posixfile_nt and fix import bug in windows.py
Sune Foldager <cryo@cyanite.org>
parents:
8364
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374 pass |
8614
573734e7e6d0
cmdutils: Take over glob expansion duties from util
Matt Mackall <mpm@selenic.com>
parents:
8559
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changeset
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375 |
573734e7e6d0
cmdutils: Take over glob expansion duties from util
Matt Mackall <mpm@selenic.com>
parents:
8559
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376 expandglobs = True |