Mercurial > hg
annotate mercurial/windows.py @ 10092:f1bf64abcb1b stable
doc/Makefile: Fix rst2html detection
Displaying the output from the failing call to "which" didn't prevent
make from doing stupid things later. We now only search for "rst2html"
and fallback to "rst2html.py". If neither name is found, make will
eventually abort when we try to use $(RST2HTML).
author | Mads Kiilerich <mads@kiilerich.com> |
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date | Wed, 16 Dec 2009 23:59:50 +0100 |
parents | f0c5c59d878d |
children | c31ac3f7fd8f 25e572394f5c |
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, random |
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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: 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 realpath(path): |
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130 ''' |
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131 Returns the true, canonical file system path equivalent to the given |
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132 path. |
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133 ''' |
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134 # TODO: There may be a more clever way to do this that also handles other, |
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135 # less common file systems. |
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136 return os.path.normpath(os.path.normcase(os.path.realpath(path))) |
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137 |
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138 def samestat(s1, s2): |
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139 return False |
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140 |
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141 # A sequence of backslashes is special iff it precedes a double quote: |
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142 # - if there's an even number of backslashes, the double quote is not |
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143 # quoted (i.e. it ends the quoted region) |
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144 # - if there's an odd number of backslashes, the double quote is quoted |
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145 # - in both cases, every pair of backslashes is unquoted into a single |
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146 # backslash |
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147 # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) |
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148 # So, to quote a string, we must surround it in double quotes, double |
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149 # the number of backslashes that preceed double quotes and add another |
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150 # backslash before every double quote (being careful with the double |
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151 # quote we've appended to the end) |
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152 _quotere = None |
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153 def shellquote(s): |
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154 global _quotere |
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155 if _quotere is None: |
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156 _quotere = re.compile(r'(\\*)("|\\$)') |
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157 return '"%s"' % _quotere.sub(r'\1\1\\\2', s) |
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158 |
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159 def quotecommand(cmd): |
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160 """Build a command string suitable for os.popen* calls.""" |
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161 # The extra quotes are needed because popen* runs the command |
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162 # through the current COMSPEC. cmd.exe suppress enclosing quotes. |
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163 return '"' + cmd + '"' |
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164 |
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165 def popen(command, mode='r'): |
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166 # Work around "popen spawned process may not write to stdout |
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167 # under windows" |
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168 # http://bugs.python.org/issue1366 |
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169 command += " 2> %s" % nulldev |
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170 return os.popen(quotecommand(command), mode) |
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171 |
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172 def explain_exit(code): |
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173 return _("exited with status %d") % code, code |
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174 |
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175 # if you change this stub into a real check, please try to implement the |
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176 # username and groupname functions above, too. |
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177 def isowner(st): |
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178 return True |
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179 |
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180 def find_exe(command): |
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181 '''Find executable for command searching like cmd.exe does. |
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182 If command is a basename then PATH is searched for command. |
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183 PATH isn't searched if command is an absolute or relative path. |
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184 An extension from PATHEXT is found and added if not present. |
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185 If command isn't found None is returned.''' |
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186 pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') |
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187 pathexts = [ext for ext in pathext.lower().split(os.pathsep)] |
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188 if os.path.splitext(command)[1].lower() in pathexts: |
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189 pathexts = [''] |
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190 |
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191 def findexisting(pathcommand): |
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192 'Will append extension (if needed) and return existing file' |
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193 for ext in pathexts: |
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194 executable = pathcommand + ext |
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195 if os.path.exists(executable): |
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196 return executable |
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197 return None |
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198 |
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199 if os.sep in command: |
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200 return findexisting(command) |
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201 |
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202 for path in os.environ.get('PATH', '').split(os.pathsep): |
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203 executable = findexisting(os.path.join(path, command)) |
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204 if executable is not None: |
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205 return executable |
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206 return None |
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207 |
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208 def set_signal_handler(): |
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209 try: |
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210 set_signal_handler_win32() |
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211 except NameError: |
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212 pass |
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213 |
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214 def statfiles(files): |
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215 '''Stat each file in files and yield stat or None if file does not exist. |
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216 Cluster and cache stat per directory to minimize number of OS stat calls.''' |
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217 ncase = os.path.normcase |
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218 sep = os.sep |
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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 = ncase(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([(ncase(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 getuser(): |
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243 '''return name of current user''' |
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244 raise error.Abort(_('user name not available - set USERNAME ' |
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245 'environment variable')) |
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246 |
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247 def username(uid=None): |
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248 """Return the name of the user with the given uid. |
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249 |
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250 If uid is None, return the name of the current user.""" |
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251 return None |
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252 |
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253 def groupname(gid=None): |
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254 """Return the name of the group with the given gid. |
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255 |
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256 If gid is None, return the name of the current group.""" |
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257 return None |
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258 |
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259 def _removedirs(name): |
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260 """special version of os.removedirs that does not remove symlinked |
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261 directories or junction points if they actually contain files""" |
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262 if osutil.listdir(name): |
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263 return |
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264 os.rmdir(name) |
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265 head, tail = os.path.split(name) |
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266 if not tail: |
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267 head, tail = os.path.split(head) |
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268 while head and tail: |
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269 try: |
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270 if osutil.listdir(head): |
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271 return |
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272 os.rmdir(head) |
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273 except: |
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274 break |
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275 head, tail = os.path.split(head) |
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276 |
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277 def unlink(f): |
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278 """unlink and remove the directory if it is empty""" |
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279 os.unlink(f) |
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280 # try removing directories that might now be empty |
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281 try: |
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282 _removedirs(os.path.dirname(f)) |
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283 except OSError: |
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284 pass |
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285 |
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286 def rename(src, dst): |
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287 '''atomically rename file src to dst, replacing dst if it exists''' |
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288 try: |
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289 os.rename(src, dst) |
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290 except OSError, err: # FIXME: check err (EEXIST ?) |
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291 |
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292 # On windows, rename to existing file is not allowed, so we |
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293 # must delete destination first. But if a file is open, unlink |
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294 # schedules it for delete but does not delete it. Rename |
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295 # happens immediately even for open files, so we rename |
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296 # destination to a temporary name, then delete that. Then |
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297 # rename is safe to do. |
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298 # The temporary name is chosen at random to avoid the situation |
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299 # where a file is left lying around from a previous aborted run. |
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300 # The usual race condition this introduces can't be avoided as |
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301 # we need the name to rename into, and not the file itself. Due |
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302 # to the nature of the operation however, any races will at worst |
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303 # lead to the rename failing and the current operation aborting. |
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304 |
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305 def tempname(prefix): |
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306 for tries in xrange(10): |
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307 temp = '%s-%08x' % (prefix, random.randint(0, 0xffffffff)) |
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308 if not os.path.exists(temp): |
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309 return temp |
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310 raise IOError, (errno.EEXIST, "No usable temporary filename found") |
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311 |
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312 temp = tempname(dst) |
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313 os.rename(dst, temp) |
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314 try: |
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315 os.unlink(temp) |
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316 except: |
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317 # Some rude AV-scanners on Windows may cause the unlink to |
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318 # fail. Not aborting here just leaks the temp file, whereas |
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319 # aborting at this point may leave serious inconsistencies. |
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320 # Ideally, we would notify the user here. |
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321 pass |
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322 os.rename(src, dst) |
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323 |
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324 try: |
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325 # override functions with win32 versions if possible |
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326 from win32 import * |
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327 except ImportError: |
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328 pass |
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329 |
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330 expandglobs = True |