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annotate mercurial/windows.py @ 9183:d0225fa2f6c4
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author | Martin Geisler <mg@lazybytes.net> |
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date | Wed, 22 Jul 2009 22:50:34 +0200 |
parents | 705278e70457 |
children | 40196d036a71 bc6b0fef9495 |
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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6 # GNU General Public License version 2, incorporated herein by reference. |
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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 |
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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, 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: raise |
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51 self.close() |
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52 raise IOError(errno.EPIPE, 'Broken pipe') |
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53 |
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54 def flush(self): |
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55 try: |
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56 return self.fp.flush() |
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57 except IOError, inst: |
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58 if inst.errno != errno.EINVAL: raise |
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59 self.close() |
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60 raise IOError(errno.EPIPE, 'Broken pipe') |
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61 |
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62 sys.stdout = winstdout(sys.stdout) |
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63 |
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64 def _is_win_9x(): |
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65 '''return true if run on windows 95, 98 or me.''' |
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66 try: |
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67 return sys.getwindowsversion()[3] == 1 |
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68 except AttributeError: |
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69 return 'command' in os.environ.get('comspec', '') |
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70 |
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71 def openhardlinks(): |
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72 return not _is_win_9x() and "win32api" in globals() |
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73 |
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74 def system_rcpath(): |
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75 try: |
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76 return system_rcpath_win32() |
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77 except: |
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78 return [r'c:\mercurial\mercurial.ini'] |
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79 |
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80 def user_rcpath(): |
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81 '''return os-specific hgrc search path to the user dir''' |
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82 try: |
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83 path = user_rcpath_win32() |
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84 except: |
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85 home = os.path.expanduser('~') |
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86 path = [os.path.join(home, 'mercurial.ini'), |
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87 os.path.join(home, '.hgrc')] |
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88 userprofile = os.environ.get('USERPROFILE') |
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89 if userprofile: |
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90 path.append(os.path.join(userprofile, 'mercurial.ini')) |
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91 path.append(os.path.join(userprofile, '.hgrc')) |
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92 return path |
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93 |
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94 def parse_patch_output(output_line): |
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95 """parses the output produced by patch and returns the filename""" |
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96 pf = output_line[14:] |
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97 if pf[0] == '`': |
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98 pf = pf[1:-1] # Remove the quotes |
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99 return pf |
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100 |
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101 def sshargs(sshcmd, host, user, port): |
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102 '''Build argument list for ssh or Plink''' |
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103 pflag = 'plink' in sshcmd.lower() and '-P' or '-p' |
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104 args = user and ("%s@%s" % (user, host)) or host |
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105 return port and ("%s %s %s" % (args, pflag, port)) or args |
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106 |
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107 def testpid(pid): |
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108 '''return False if pid dead, True if running or not known''' |
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109 return True |
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110 |
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111 def set_flags(f, l, x): |
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112 pass |
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113 |
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114 def set_binary(fd): |
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115 # When run without console, pipes may expose invalid |
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116 # fileno(), usually set to -1. |
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117 if hasattr(fd, 'fileno') and fd.fileno() >= 0: |
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118 msvcrt.setmode(fd.fileno(), os.O_BINARY) |
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119 |
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120 def pconvert(path): |
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121 return '/'.join(path.split(os.sep)) |
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122 |
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123 def localpath(path): |
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124 return path.replace('/', '\\') |
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125 |
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126 def normpath(path): |
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127 return pconvert(os.path.normpath(path)) |
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128 |
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129 def samestat(s1, s2): |
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130 return False |
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131 |
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132 # A sequence of backslashes is special iff it precedes a double quote: |
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133 # - if there's an even number of backslashes, the double quote is not |
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134 # quoted (i.e. it ends the quoted region) |
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135 # - if there's an odd number of backslashes, the double quote is quoted |
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136 # - in both cases, every pair of backslashes is unquoted into a single |
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137 # backslash |
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138 # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) |
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139 # So, to quote a string, we must surround it in double quotes, double |
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140 # the number of backslashes that preceed double quotes and add another |
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141 # backslash before every double quote (being careful with the double |
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142 # quote we've appended to the end) |
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143 _quotere = None |
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144 def shellquote(s): |
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145 global _quotere |
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146 if _quotere is None: |
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147 _quotere = re.compile(r'(\\*)("|\\$)') |
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148 return '"%s"' % _quotere.sub(r'\1\1\\\2', s) |
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149 |
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150 def quotecommand(cmd): |
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151 """Build a command string suitable for os.popen* calls.""" |
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152 # The extra quotes are needed because popen* runs the command |
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153 # through the current COMSPEC. cmd.exe suppress enclosing quotes. |
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154 return '"' + cmd + '"' |
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155 |
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156 def popen(command, mode='r'): |
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157 # Work around "popen spawned process may not write to stdout |
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158 # under windows" |
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159 # http://bugs.python.org/issue1366 |
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160 command += " 2> %s" % nulldev |
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161 return os.popen(quotecommand(command), mode) |
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162 |
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163 def explain_exit(code): |
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164 return _("exited with status %d") % code, code |
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165 |
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166 # if you change this stub into a real check, please try to implement the |
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167 # username and groupname functions above, too. |
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168 def isowner(st): |
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169 return True |
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170 |
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171 def find_exe(command): |
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172 '''Find executable for command searching like cmd.exe does. |
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173 If command is a basename then PATH is searched for command. |
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174 PATH isn't searched if command is an absolute or relative path. |
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175 An extension from PATHEXT is found and added if not present. |
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176 If command isn't found None is returned.''' |
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177 pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') |
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178 pathexts = [ext for ext in pathext.lower().split(os.pathsep)] |
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179 if os.path.splitext(command)[1].lower() in pathexts: |
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180 pathexts = [''] |
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181 |
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182 def findexisting(pathcommand): |
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183 'Will append extension (if needed) and return existing file' |
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184 for ext in pathexts: |
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185 executable = pathcommand + ext |
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186 if os.path.exists(executable): |
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187 return executable |
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188 return None |
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189 |
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190 if os.sep in command: |
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191 return findexisting(command) |
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192 |
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193 for path in os.environ.get('PATH', '').split(os.pathsep): |
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194 executable = findexisting(os.path.join(path, command)) |
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195 if executable is not None: |
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196 return executable |
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197 return None |
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198 |
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199 def set_signal_handler(): |
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200 try: |
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201 set_signal_handler_win32() |
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202 except NameError: |
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203 pass |
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204 |
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205 def statfiles(files): |
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206 '''Stat each file in files and yield stat or None if file does not exist. |
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207 Cluster and cache stat per directory to minimize number of OS stat calls.''' |
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208 ncase = os.path.normcase |
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209 sep = os.sep |
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210 dircache = {} # dirname -> filename -> status | None if file does not exist |
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211 for nf in files: |
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212 nf = ncase(nf) |
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213 dir, base = os.path.split(nf) |
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214 if not dir: |
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215 dir = '.' |
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216 cache = dircache.get(dir, None) |
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217 if cache is None: |
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218 try: |
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219 dmap = dict([(ncase(n), s) |
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220 for n, k, s in osutil.listdir(dir, True)]) |
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221 except OSError, err: |
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222 # handle directory not found in Python version prior to 2.5 |
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223 # Python <= 2.4 returns native Windows code 3 in errno |
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224 # Python >= 2.5 returns ENOENT and adds winerror field |
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225 # EINVAL is raised if dir is not a directory. |
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226 if err.errno not in (3, errno.ENOENT, errno.EINVAL, |
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227 errno.ENOTDIR): |
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228 raise |
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229 dmap = {} |
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230 cache = dircache.setdefault(dir, dmap) |
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231 yield cache.get(base, None) |
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232 |
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233 def getuser(): |
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234 '''return name of current user''' |
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235 raise error.Abort(_('user name not available - set USERNAME ' |
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236 'environment variable')) |
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237 |
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238 def username(uid=None): |
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239 """Return the name of the user with the given uid. |
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240 |
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241 If uid is None, return the name of the current user.""" |
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242 return None |
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243 |
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244 def groupname(gid=None): |
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245 """Return the name of the group with the given gid. |
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246 |
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247 If gid is None, return the name of the current group.""" |
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248 return None |
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249 |
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250 def _removedirs(name): |
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251 """special version of os.removedirs that does not remove symlinked |
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252 directories or junction points if they actually contain files""" |
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253 if osutil.listdir(name): |
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254 return |
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255 os.rmdir(name) |
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256 head, tail = os.path.split(name) |
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257 if not tail: |
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258 head, tail = os.path.split(head) |
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259 while head and tail: |
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260 try: |
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261 if osutil.listdir(name): |
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262 return |
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263 os.rmdir(head) |
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264 except: |
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265 break |
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266 head, tail = os.path.split(head) |
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267 |
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268 def unlink(f): |
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269 """unlink and remove the directory if it is empty""" |
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270 os.unlink(f) |
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271 # try removing directories that might now be empty |
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272 try: |
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273 _removedirs(os.path.dirname(f)) |
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274 except OSError: |
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275 pass |
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276 |
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277 try: |
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278 # override functions with win32 versions if possible |
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279 from win32 import * |
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280 except ImportError: |
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281 pass |
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282 |
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283 expandglobs = True |