Mercurial > hg
annotate mercurial/windows.py @ 17817:b17be267b59c
scmutil: add function to validate new branch, tag, and bookmark names
For now the new function only checks to make sure the new label name
isn't a reserved name ('tip', '.', or 'null'). Eventually more of the
checks will be unified between the different types of labels.
The `tag` command is trivially updated to use it. Updating branches and
bookmarks to use it is slightly more invasive and thus reserved for
later patches.
author | Kevin Bullock <kbullock@ringworld.org> |
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date | Wed, 17 Oct 2012 16:34:46 -0500 |
parents | 9ee25d7b1aed |
children | 74912fe3d718 |
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, encoding |
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10 import errno, msvcrt, os, re, sys, _winreg |
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11 |
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12 import win32 |
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13 executablepath = win32.executablepath |
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14 getuser = win32.getuser |
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15 hidewindow = win32.hidewindow |
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16 makedir = win32.makedir |
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17 nlinks = win32.nlinks |
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18 oslink = win32.oslink |
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19 samedevice = win32.samedevice |
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20 samefile = win32.samefile |
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21 setsignalhandler = win32.setsignalhandler |
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22 spawndetached = win32.spawndetached |
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23 split = os.path.split |
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24 termwidth = win32.termwidth |
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25 testpid = win32.testpid |
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26 unlink = win32.unlink |
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27 |
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28 umask = 0022 |
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29 |
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30 # wrap osutil.posixfile to provide friendlier exceptions |
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31 def posixfile(name, mode='r', buffering=-1): |
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32 try: |
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33 return osutil.posixfile(name, mode, buffering) |
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34 except WindowsError, err: |
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35 raise IOError(err.errno, '%s: %s' % (name, err.strerror)) |
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36 posixfile.__doc__ = osutil.posixfile.__doc__ |
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37 |
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38 class winstdout(object): |
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39 '''stdout on windows misbehaves if sent through a pipe''' |
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40 |
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41 def __init__(self, fp): |
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42 self.fp = fp |
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43 |
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44 def __getattr__(self, key): |
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45 return getattr(self.fp, key) |
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46 |
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47 def close(self): |
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48 try: |
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49 self.fp.close() |
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50 except IOError: |
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51 pass |
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52 |
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53 def write(self, s): |
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54 try: |
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55 # This is workaround for "Not enough space" error on |
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56 # writing large size of data to console. |
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57 limit = 16000 |
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58 l = len(s) |
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59 start = 0 |
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60 self.softspace = 0 |
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61 while start < l: |
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62 end = start + limit |
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63 self.fp.write(s[start:end]) |
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64 start = end |
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65 except IOError, inst: |
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66 if inst.errno != 0: |
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67 raise |
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68 self.close() |
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69 raise IOError(errno.EPIPE, 'Broken pipe') |
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70 |
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71 def flush(self): |
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72 try: |
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73 return self.fp.flush() |
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74 except IOError, inst: |
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75 if inst.errno != errno.EINVAL: |
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76 raise |
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77 self.close() |
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78 raise IOError(errno.EPIPE, 'Broken pipe') |
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79 |
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80 sys.__stdout__ = sys.stdout = winstdout(sys.stdout) |
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81 |
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82 def _is_win_9x(): |
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83 '''return true if run on windows 95, 98 or me.''' |
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84 try: |
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85 return sys.getwindowsversion()[3] == 1 |
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86 except AttributeError: |
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87 return 'command' in os.environ.get('comspec', '') |
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88 |
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89 def openhardlinks(): |
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90 return not _is_win_9x() |
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91 |
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92 def parsepatchoutput(output_line): |
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93 """parses the output produced by patch and returns the filename""" |
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94 pf = output_line[14:] |
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95 if pf[0] == '`': |
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96 pf = pf[1:-1] # Remove the quotes |
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97 return pf |
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98 |
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99 def sshargs(sshcmd, host, user, port): |
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100 '''Build argument list for ssh or Plink''' |
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101 pflag = 'plink' in sshcmd.lower() and '-P' or '-p' |
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102 args = user and ("%s@%s" % (user, host)) or host |
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103 return port and ("%s %s %s" % (args, pflag, port)) or args |
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104 |
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105 def setflags(f, l, x): |
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106 pass |
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107 |
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108 def copymode(src, dst, mode=None): |
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109 pass |
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110 |
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111 def checkexec(path): |
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112 return False |
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113 |
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114 def checklink(path): |
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115 return False |
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116 |
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117 def setbinary(fd): |
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118 # When run without console, pipes may expose invalid |
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119 # fileno(), usually set to -1. |
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120 fno = getattr(fd, 'fileno', None) |
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121 if fno is not None and fno() >= 0: |
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122 msvcrt.setmode(fno(), os.O_BINARY) |
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123 |
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124 def pconvert(path): |
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125 return path.replace(os.sep, '/') |
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126 |
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127 def localpath(path): |
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128 return path.replace('/', '\\') |
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129 |
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130 def normpath(path): |
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131 return pconvert(os.path.normpath(path)) |
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132 |
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133 def normcase(path): |
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134 return encoding.upper(path) |
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135 |
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136 def realpath(path): |
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137 ''' |
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138 Returns the true, canonical file system path equivalent to the given |
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139 path. |
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140 ''' |
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141 # TODO: There may be a more clever way to do this that also handles other, |
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142 # less common file systems. |
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143 return os.path.normpath(normcase(os.path.realpath(path))) |
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144 |
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145 def samestat(s1, s2): |
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146 return False |
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147 |
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148 # A sequence of backslashes is special iff it precedes a double quote: |
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149 # - if there's an even number of backslashes, the double quote is not |
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150 # quoted (i.e. it ends the quoted region) |
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151 # - if there's an odd number of backslashes, the double quote is quoted |
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152 # - in both cases, every pair of backslashes is unquoted into a single |
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153 # backslash |
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154 # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) |
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155 # So, to quote a string, we must surround it in double quotes, double |
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157 # backslash before every double quote (being careful with the double |
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158 # quote we've appended to the end) |
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159 _quotere = None |
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160 def shellquote(s): |
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161 global _quotere |
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162 if _quotere is None: |
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163 _quotere = re.compile(r'(\\*)("|\\$)') |
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164 return '"%s"' % _quotere.sub(r'\1\1\\\2', s) |
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165 |
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166 def quotecommand(cmd): |
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167 """Build a command string suitable for os.popen* calls.""" |
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168 if sys.version_info < (2, 7, 1): |
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169 # Python versions since 2.7.1 do this extra quoting themselves |
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170 return '"' + cmd + '"' |
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171 return cmd |
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172 |
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173 def popen(command, mode='r'): |
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174 # Work around "popen spawned process may not write to stdout |
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175 # under windows" |
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176 # http://bugs.python.org/issue1366 |
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177 command += " 2> %s" % os.devnull |
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178 return os.popen(quotecommand(command), mode) |
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179 |
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180 def explainexit(code): |
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181 return _("exited with status %d") % code, code |
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182 |
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183 # if you change this stub into a real check, please try to implement the |
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184 # username and groupname functions above, too. |
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185 def isowner(st): |
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186 return True |
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187 |
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188 def findexe(command): |
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189 '''Find executable for command searching like cmd.exe does. |
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190 If command is a basename then PATH is searched for command. |
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191 PATH isn't searched if command is an absolute or relative path. |
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192 An extension from PATHEXT is found and added if not present. |
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193 If command isn't found None is returned.''' |
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194 pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') |
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195 pathexts = [ext for ext in pathext.lower().split(os.pathsep)] |
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196 if os.path.splitext(command)[1].lower() in pathexts: |
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197 pathexts = [''] |
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198 |
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199 def findexisting(pathcommand): |
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200 'Will append extension (if needed) and return existing file' |
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201 for ext in pathexts: |
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202 executable = pathcommand + ext |
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203 if os.path.exists(executable): |
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204 return executable |
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205 return None |
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206 |
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207 if os.sep in command: |
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208 return findexisting(command) |
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209 |
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210 for path in os.environ.get('PATH', '').split(os.pathsep): |
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211 executable = findexisting(os.path.join(path, command)) |
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212 if executable is not None: |
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213 return executable |
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214 return findexisting(os.path.expanduser(os.path.expandvars(command))) |
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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 dircache = {} # dirname -> filename -> status | None if file does not exist |
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220 for nf in files: |
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221 nf = normcase(nf) |
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222 dir, base = os.path.split(nf) |
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223 if not dir: |
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224 dir = '.' |
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225 cache = dircache.get(dir, None) |
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226 if cache is None: |
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227 try: |
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228 dmap = dict([(normcase(n), s) |
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229 for n, k, s in osutil.listdir(dir, True)]) |
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230 except OSError, err: |
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231 # handle directory not found in Python version prior to 2.5 |
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232 # Python <= 2.4 returns native Windows code 3 in errno |
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233 # Python >= 2.5 returns ENOENT and adds winerror field |
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234 # EINVAL is raised if dir is not a directory. |
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235 if err.errno not in (3, errno.ENOENT, errno.EINVAL, |
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236 errno.ENOTDIR): |
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237 raise |
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238 dmap = {} |
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239 cache = dircache.setdefault(dir, dmap) |
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240 yield cache.get(base, None) |
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241 |
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242 def username(uid=None): |
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243 """Return the name of the user with the given uid. |
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244 |
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245 If uid is None, return the name of the current user.""" |
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246 return None |
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247 |
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248 def groupname(gid=None): |
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249 """Return the name of the group with the given gid. |
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250 |
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251 If gid is None, return the name of the current group.""" |
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252 return None |
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253 |
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254 def _removedirs(name): |
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255 """special version of os.removedirs that does not remove symlinked |
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256 directories or junction points if they actually contain files""" |
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257 if osutil.listdir(name): |
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258 return |
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259 os.rmdir(name) |
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260 head, tail = os.path.split(name) |
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261 if not tail: |
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262 head, tail = os.path.split(head) |
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263 while head and tail: |
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264 try: |
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265 if osutil.listdir(head): |
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266 return |
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267 os.rmdir(head) |
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268 except (ValueError, OSError): |
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269 break |
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270 head, tail = os.path.split(head) |
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271 |
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272 def unlinkpath(f): |
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273 """unlink and remove the directory if it is empty""" |
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274 unlink(f) |
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275 # try removing directories that might now be empty |
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276 try: |
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277 _removedirs(os.path.dirname(f)) |
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278 except OSError: |
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279 pass |
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280 |
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281 def rename(src, dst): |
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282 '''atomically rename file src to dst, replacing dst if it exists''' |
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283 try: |
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284 os.rename(src, dst) |
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285 except OSError, e: |
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286 if e.errno != errno.EEXIST: |
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287 raise |
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288 unlink(dst) |
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289 os.rename(src, dst) |
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290 |
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291 def gethgcmd(): |
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292 return [sys.executable] + sys.argv[:1] |
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293 |
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294 def groupmembers(name): |
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295 # Don't support groups on Windows for now |
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296 raise KeyError |
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297 |
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298 def isexec(f): |
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299 return False |
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300 |
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301 class cachestat(object): |
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302 def __init__(self, path): |
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303 pass |
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304 |
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305 def cacheable(self): |
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306 return False |
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307 |
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308 def lookupreg(key, valname=None, scope=None): |
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309 ''' Look up a key/value name in the Windows registry. |
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310 |
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311 valname: value name. If unspecified, the default value for the key |
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312 is used. |
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313 scope: optionally specify scope for registry lookup, this can be |
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314 a sequence of scopes to look up in order. Default (CURRENT_USER, |
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315 LOCAL_MACHINE). |
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316 ''' |
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317 if scope is None: |
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318 scope = (_winreg.HKEY_CURRENT_USER, _winreg.HKEY_LOCAL_MACHINE) |
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319 elif not isinstance(scope, (list, tuple)): |
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320 scope = (scope,) |
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321 for s in scope: |
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322 try: |
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323 val = _winreg.QueryValueEx(_winreg.OpenKey(s, key), valname)[0] |
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324 # never let a Unicode string escape into the wild |
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325 return encoding.tolocal(val.encode('UTF-8')) |
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326 except EnvironmentError: |
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327 pass |
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328 |
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329 expandglobs = True |