Mercurial > hg
annotate mercurial/windows.py @ 11791:00cde9bddbe4
repair: do not compress partial bundle if we do not keep it on disk
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not descending from the node to strip, to be able to restore the
changesets after stripping the changelog.
Since this bundle is not kept after the strip operation, and is not
user-visible, it is not necessary and should be faster to avoid
compression.
author | Nicolas Dumazet <nicdumz.commits@gmail.com> |
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date | Thu, 12 Aug 2010 16:53:23 +0900 |
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 |
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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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363 # current line but on the new one. Keep room for it. |
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364 return 79 |
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365 |
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366 def groupmembers(name): |
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367 # Don't support groups on Windows for now |
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368 raise KeyError() |
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369 |
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370 try: |
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371 # override functions with win32 versions if possible |
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372 from win32 import * |
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373 except ImportError: |
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374 pass |
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375 |
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376 expandglobs = True |