Mercurial > hg
annotate mercurial/windows.py @ 24283:ef22cfff7052
transaction: add a validation stage
The 'transaction' object can now be fed a 'validator' function. This function
will be run right before the transaction is closed to validate its content. The
target usage is hooks. The validation function is expected to raise an exception
when it wants to abort the transaction.
This only introduce the idea with a default no-op validator. Actual usage is in
the next changeset.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Mon, 09 Mar 2015 22:43:36 -0700 |
parents | 7a2194473155 |
children | 22f49c7dd11b |
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, stat, 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 _SEEK_END = 2 # os.SEEK_END was introduced in Python 2.5 |
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30 |
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31 def posixfile(name, mode='r', buffering=-1): |
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32 '''Open a file with even more POSIX-like semantics''' |
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33 try: |
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34 fp = osutil.posixfile(name, mode, buffering) # may raise WindowsError |
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35 |
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36 # The position when opening in append mode is implementation defined, so |
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37 # make it consistent with other platforms, which position at EOF. |
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38 if 'a' in mode: |
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39 fp.seek(0, _SEEK_END) |
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40 |
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41 return fp |
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42 except WindowsError, err: |
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43 # convert to a friendlier exception |
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44 raise IOError(err.errno, '%s: %s' % (name, err.strerror)) |
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45 |
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46 class winstdout(object): |
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47 '''stdout on windows misbehaves if sent through a pipe''' |
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48 |
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49 def __init__(self, fp): |
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50 self.fp = fp |
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51 |
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52 def __getattr__(self, key): |
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53 return getattr(self.fp, key) |
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54 |
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55 def close(self): |
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56 try: |
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57 self.fp.close() |
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58 except IOError: |
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59 pass |
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60 |
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61 def write(self, s): |
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62 try: |
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63 # This is workaround for "Not enough space" error on |
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64 # writing large size of data to console. |
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65 limit = 16000 |
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66 l = len(s) |
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67 start = 0 |
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68 self.softspace = 0 |
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69 while start < l: |
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70 end = start + limit |
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71 self.fp.write(s[start:end]) |
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72 start = end |
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73 except IOError, inst: |
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74 if inst.errno != 0: |
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75 raise |
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76 self.close() |
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77 raise IOError(errno.EPIPE, 'Broken pipe') |
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78 |
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79 def flush(self): |
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80 try: |
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81 return self.fp.flush() |
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82 except IOError, inst: |
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83 if inst.errno != errno.EINVAL: |
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84 raise |
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85 self.close() |
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86 raise IOError(errno.EPIPE, 'Broken pipe') |
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87 |
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88 sys.__stdout__ = sys.stdout = winstdout(sys.stdout) |
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89 |
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90 def _is_win_9x(): |
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91 '''return true if run on windows 95, 98 or me.''' |
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92 try: |
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93 return sys.getwindowsversion()[3] == 1 |
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94 except AttributeError: |
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95 return 'command' in os.environ.get('comspec', '') |
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96 |
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97 def openhardlinks(): |
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98 return not _is_win_9x() |
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99 |
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100 def parsepatchoutput(output_line): |
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101 """parses the output produced by patch and returns the filename""" |
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102 pf = output_line[14:] |
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103 if pf[0] == '`': |
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104 pf = pf[1:-1] # Remove the quotes |
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105 return pf |
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106 |
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107 def sshargs(sshcmd, host, user, port): |
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108 '''Build argument list for ssh or Plink''' |
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109 pflag = 'plink' in sshcmd.lower() and '-P' or '-p' |
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110 args = user and ("%s@%s" % (user, host)) or host |
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111 return port and ("%s %s %s" % (args, pflag, port)) or args |
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112 |
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113 def setflags(f, l, x): |
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114 pass |
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115 |
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116 def copymode(src, dst, mode=None): |
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117 pass |
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118 |
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119 def checkexec(path): |
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120 return False |
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121 |
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122 def checklink(path): |
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123 return False |
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124 |
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125 def setbinary(fd): |
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126 # When run without console, pipes may expose invalid |
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127 # fileno(), usually set to -1. |
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128 fno = getattr(fd, 'fileno', None) |
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129 if fno is not None and fno() >= 0: |
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130 msvcrt.setmode(fno(), os.O_BINARY) |
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131 |
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132 def pconvert(path): |
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133 return path.replace(os.sep, '/') |
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134 |
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135 def localpath(path): |
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136 return path.replace('/', '\\') |
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137 |
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138 def normpath(path): |
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139 return pconvert(os.path.normpath(path)) |
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140 |
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141 def normcase(path): |
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142 return encoding.upper(path) |
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143 |
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144 def samestat(s1, s2): |
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145 return False |
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146 |
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147 # A sequence of backslashes is special iff it precedes a double quote: |
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148 # - if there's an even number of backslashes, the double quote is not |
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149 # quoted (i.e. it ends the quoted region) |
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150 # - if there's an odd number of backslashes, the double quote is quoted |
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151 # - in both cases, every pair of backslashes is unquoted into a single |
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152 # backslash |
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153 # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) |
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154 # So, to quote a string, we must surround it in double quotes, double |
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156 # backslash before every double quote (being careful with the double |
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157 # quote we've appended to the end) |
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158 _quotere = None |
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159 _needsshellquote = 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 global _needsshellquote |
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165 if _needsshellquote is None: |
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166 # ":" and "\\" are also treated as "safe character", because |
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167 # they are used as a part of path name (and the latter doesn't |
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168 # work as "escape character", like one on posix) on Windows |
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169 _needsshellquote = re.compile(r'[^a-zA-Z0-9._:/\\-]').search |
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170 if s and not _needsshellquote(s) and not _quotere.search(s): |
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171 # "s" shouldn't have to be quoted |
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172 return s |
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173 return '"%s"' % _quotere.sub(r'\1\1\\\2', s) |
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174 |
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175 def quotecommand(cmd): |
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176 """Build a command string suitable for os.popen* calls.""" |
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177 if sys.version_info < (2, 7, 1): |
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178 # Python versions since 2.7.1 do this extra quoting themselves |
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179 return '"' + cmd + '"' |
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180 return cmd |
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181 |
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182 def popen(command, mode='r'): |
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183 # Work around "popen spawned process may not write to stdout |
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184 # under windows" |
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185 # http://bugs.python.org/issue1366 |
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186 command += " 2> %s" % os.devnull |
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187 return os.popen(quotecommand(command), mode) |
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188 |
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189 def explainexit(code): |
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190 return _("exited with status %d") % code, code |
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191 |
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192 # if you change this stub into a real check, please try to implement the |
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193 # username and groupname functions above, too. |
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194 def isowner(st): |
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195 return True |
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196 |
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197 def findexe(command): |
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198 '''Find executable for command searching like cmd.exe does. |
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199 If command is a basename then PATH is searched for command. |
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200 PATH isn't searched if command is an absolute or relative path. |
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201 An extension from PATHEXT is found and added if not present. |
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202 If command isn't found None is returned.''' |
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203 pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') |
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204 pathexts = [ext for ext in pathext.lower().split(os.pathsep)] |
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205 if os.path.splitext(command)[1].lower() in pathexts: |
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206 pathexts = [''] |
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207 |
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208 def findexisting(pathcommand): |
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209 'Will append extension (if needed) and return existing file' |
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210 for ext in pathexts: |
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211 executable = pathcommand + ext |
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212 if os.path.exists(executable): |
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213 return executable |
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214 return None |
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215 |
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216 if os.sep in command: |
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217 return findexisting(command) |
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218 |
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219 for path in os.environ.get('PATH', '').split(os.pathsep): |
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220 executable = findexisting(os.path.join(path, command)) |
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221 if executable is not None: |
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222 return executable |
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223 return findexisting(os.path.expanduser(os.path.expandvars(command))) |
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224 |
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225 _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) |
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226 |
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227 def statfiles(files): |
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228 '''Stat each file in files. Yield each stat, or None if a file |
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229 does not exist or has a type we don't care about. |
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230 |
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231 Cluster and cache stat per directory to minimize number of OS stat calls.''' |
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232 dircache = {} # dirname -> filename -> status | None if file does not exist |
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233 getkind = stat.S_IFMT |
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234 for nf in files: |
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235 nf = normcase(nf) |
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Use os.path.split() for MBCS with win32mbcs extension.
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236 dir, base = os.path.split(nf) |
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Use os.path.split() for MBCS with win32mbcs extension.
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237 if not dir: |
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Use os.path.split() for MBCS with win32mbcs extension.
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238 dir = '.' |
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239 cache = dircache.get(dir, None) |
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240 if cache is None: |
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241 try: |
15637
7f01ad702405
icasefs: use util.normcase() instead of str.lower() or os.path.normpath()
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242 dmap = dict([(normcase(n), s) |
18017
74912fe3d718
dirstate: move file type filtering to its source
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243 for n, k, s in osutil.listdir(dir, True) |
18041
f0cfa27c712a
windows: correctly pass a mode to S_IFMT in statfiles
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244 if getkind(s.st_mode) in _wantedkinds]) |
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245 except OSError, err: |
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246 # handle directory not found in Python version prior to 2.5 |
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247 # Python <= 2.4 returns native Windows code 3 in errno |
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248 # Python >= 2.5 returns ENOENT and adds winerror field |
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249 # EINVAL is raised if dir is not a directory. |
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250 if err.errno not in (3, errno.ENOENT, errno.EINVAL, |
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251 errno.ENOTDIR): |
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252 raise |
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253 dmap = {} |
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254 cache = dircache.setdefault(dir, dmap) |
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255 yield cache.get(base, None) |
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256 |
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257 def username(uid=None): |
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258 """Return the name of the user with the given uid. |
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259 |
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260 If uid is None, return the name of the current user.""" |
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261 return None |
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262 |
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263 def groupname(gid=None): |
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264 """Return the name of the group with the given gid. |
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265 |
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266 If gid is None, return the name of the current group.""" |
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267 return None |
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268 |
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269 def _removedirs(name): |
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270 """special version of os.removedirs that does not remove symlinked |
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271 directories or junction points if they actually contain files""" |
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272 if osutil.listdir(name): |
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273 return |
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274 os.rmdir(name) |
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275 head, tail = os.path.split(name) |
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276 if not tail: |
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277 head, tail = os.path.split(head) |
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278 while head and tail: |
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|
279 try: |
9572
1f665246dab3
windows: fix unlink() not dropping empty tree (issue1861)
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280 if osutil.listdir(head): |
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281 return |
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|
282 os.rmdir(head) |
14004
97ed99d1f419
eliminate various naked except clauses
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283 except (ValueError, OSError): |
8364
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|
284 break |
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285 head, tail = os.path.split(head) |
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286 |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
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287 def unlinkpath(f, ignoremissing=False): |
8364
fa901423ac23
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288 """unlink and remove the directory if it is empty""" |
18143
242d2f4ec01c
util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
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289 try: |
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util: fold ENOENT check into unlinkpath, controlled by new ignoremissing flag
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290 unlink(f) |
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291 except OSError, e: |
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|
292 if not (ignoremissing and e.errno == errno.ENOENT): |
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|
293 raise |
8364
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|
294 # try removing directories that might now be empty |
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295 try: |
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|
296 _removedirs(os.path.dirname(f)) |
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|
297 except OSError: |
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|
298 pass |
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|
299 |
9549
8b8920209317
util: move rename into posix.py and windows.py
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parents:
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|
300 def rename(src, dst): |
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301 '''atomically rename file src to dst, replacing dst if it exists''' |
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302 try: |
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|
303 os.rename(src, dst) |
13278
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windows.rename: check OSError for EEXIST
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parents:
13235
diff
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|
304 except OSError, e: |
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windows.rename: check OSError for EEXIST
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diff
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|
305 if e.errno != errno.EEXIST: |
e9a52ed28157
windows.rename: check OSError for EEXIST
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|
306 raise |
13280
6052bbc7aabd
reintroduces util.unlink, for POSIX and Windows.
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diff
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|
307 unlink(dst) |
9549
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|
308 os.rename(src, dst) |
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|
309 |
10239
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
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diff
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|
310 def gethgcmd(): |
8e4be44a676f
Find right hg command for detached process
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|
311 return [sys.executable] + sys.argv[:1] |
8e4be44a676f
Find right hg command for detached process
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|
312 |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
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diff
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|
313 def groupmembers(name): |
99eee847beaa
acl: grp module is not available on windows
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|
314 # Don't support groups on Windows for now |
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e34106fa0dc3
cleanup: "raise SomeException()" -> "raise SomeException"
Brodie Rao <brodie@sf.io>
parents:
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diff
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|
315 raise KeyError |
11138
99eee847beaa
acl: grp module is not available on windows
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parents:
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|
316 |
14926
4e7e63fc685a
util: eliminate wildcard imports
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diff
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|
317 def isexec(f): |
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util: eliminate wildcard imports
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|
318 return False |
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util: eliminate wildcard imports
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diff
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|
319 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
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|
320 class cachestat(object): |
2aa3e07b2f07
posix, windows: introduce cachestat
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diff
changeset
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321 def __init__(self, path): |
2aa3e07b2f07
posix, windows: introduce cachestat
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diff
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322 pass |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
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diff
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|
323 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
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diff
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|
324 def cacheable(self): |
2aa3e07b2f07
posix, windows: introduce cachestat
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325 return False |
2aa3e07b2f07
posix, windows: introduce cachestat
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diff
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|
326 |
16807
80142f385af9
win32: move lookupreg() to windows.py
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|
327 def lookupreg(key, valname=None, scope=None): |
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changeset
|
328 ''' Look up a key/value name in the Windows registry. |
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329 |
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|
330 valname: value name. If unspecified, the default value for the key |
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|
331 is used. |
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|
332 scope: optionally specify scope for registry lookup, this can be |
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diff
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|
333 a sequence of scopes to look up in order. Default (CURRENT_USER, |
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changeset
|
334 LOCAL_MACHINE). |
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|
335 ''' |
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|
336 if scope is None: |
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|
337 scope = (_winreg.HKEY_CURRENT_USER, _winreg.HKEY_LOCAL_MACHINE) |
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|
338 elif not isinstance(scope, (list, tuple)): |
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|
339 scope = (scope,) |
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|
340 for s in scope: |
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341 try: |
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|
342 val = _winreg.QueryValueEx(_winreg.OpenKey(s, key), valname)[0] |
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|
343 # never let a Unicode string escape into the wild |
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|
344 return encoding.tolocal(val.encode('UTF-8')) |
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|
345 except EnvironmentError: |
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|
346 pass |
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diff
changeset
|
347 |
8614
573734e7e6d0
cmdutils: Take over glob expansion duties from util
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8559
diff
changeset
|
348 expandglobs = True |
18868
cafa447a7d3b
util: add functions to check symlink/exec bits
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parents:
18143
diff
changeset
|
349 |
cafa447a7d3b
util: add functions to check symlink/exec bits
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diff
changeset
|
350 def statislink(st): |
cafa447a7d3b
util: add functions to check symlink/exec bits
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diff
changeset
|
351 '''check whether a stat result is a symlink''' |
cafa447a7d3b
util: add functions to check symlink/exec bits
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diff
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|
352 return False |
cafa447a7d3b
util: add functions to check symlink/exec bits
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parents:
18143
diff
changeset
|
353 |
cafa447a7d3b
util: add functions to check symlink/exec bits
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parents:
18143
diff
changeset
|
354 def statisexec(st): |
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util: add functions to check symlink/exec bits
Bryan O'Sullivan <bryano@fb.com>
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355 '''check whether a stat result is an executable file''' |
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util: add functions to check symlink/exec bits
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356 return False |
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platform: implement readpipe()
Gregory Szorc <gregory.szorc@gmail.com>
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357 |
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358 def readpipe(pipe): |
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359 """Read all available data from a pipe.""" |
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360 chunks = [] |
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361 while True: |
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362 size = os.fstat(pipe.fileno()).st_size |
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363 if not size: |
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364 break |
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365 |
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366 s = pipe.read(size) |
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Gregory Szorc <gregory.szorc@gmail.com>
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367 if not s: |
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368 break |
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369 chunks.append(s) |
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370 |
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371 return ''.join(chunks) |