Mercurial > hg
annotate mercurial/win32.py @ 9439:f2acc0c00bec
Backed out premature qprev/qnext removal
author | Matt Mackall <mpm@selenic.com> |
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date | Mon, 14 Sep 2009 16:39:24 -0500 |
parents | 061eeb602354 |
children | 750b7a4f01f6 |
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1 # win32.py - utility functions that use win32 API |
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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 """Utility functions that use win32 API. |
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9 |
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10 Mark Hammond's win32all package allows better functionality on |
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11 Windows. This module overrides definitions in util.py. If not |
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12 available, import of this module will fail, and generic code will be |
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13 used. |
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14 """ |
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15 |
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16 import win32api |
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17 |
6216 | 18 import errno, os, sys, pywintypes, win32con, win32file, win32process |
8656 | 19 import winerror |
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20 import osutil, encoding |
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21 from win32com.shell import shell, shellcon |
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22 |
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23 def os_link(src, dst): |
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24 try: |
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25 win32file.CreateHardLink(dst, src) |
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26 # CreateHardLink sometimes succeeds on mapped drives but |
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27 # following nlinks() returns 1. Check it now and bail out. |
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28 if nlinks(src) < 2: |
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29 try: |
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30 win32file.DeleteFile(dst) |
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31 except: |
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32 pass |
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33 # Fake hardlinking error |
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34 raise OSError(errno.EINVAL, 'Hardlinking not supported') |
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35 except pywintypes.error, details: |
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36 raise OSError(errno.EINVAL, 'target implements hardlinks improperly') |
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37 except NotImplementedError: # Another fake error win Win98 |
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38 raise OSError(errno.EINVAL, 'Hardlinking not supported') |
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39 |
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40 def nlinks(pathname): |
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41 """Return number of hardlinks for the given file.""" |
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42 try: |
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43 fh = win32file.CreateFile(pathname, |
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44 win32file.GENERIC_READ, win32file.FILE_SHARE_READ, |
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45 None, win32file.OPEN_EXISTING, 0, None) |
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46 res = win32file.GetFileInformationByHandle(fh) |
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47 fh.Close() |
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48 return res[7] |
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49 except pywintypes.error: |
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50 return os.lstat(pathname).st_nlink |
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51 |
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52 def testpid(pid): |
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53 '''return True if pid is still running or unable to |
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54 determine, False otherwise''' |
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55 try: |
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56 handle = win32api.OpenProcess( |
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57 win32con.PROCESS_QUERY_INFORMATION, False, pid) |
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58 if handle: |
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59 status = win32process.GetExitCodeProcess(handle) |
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60 return status == win32con.STILL_ACTIVE |
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61 except pywintypes.error, details: |
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62 return details[0] != winerror.ERROR_INVALID_PARAMETER |
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63 return True |
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64 |
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65 def lookup_reg(key, valname=None, scope=None): |
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66 ''' Look up a key/value name in the Windows registry. |
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67 |
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68 valname: value name. If unspecified, the default value for the key |
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69 is used. |
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70 scope: optionally specify scope for registry lookup, this can be |
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71 a sequence of scopes to look up in order. Default (CURRENT_USER, |
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72 LOCAL_MACHINE). |
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73 ''' |
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74 try: |
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75 from _winreg import HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, \ |
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76 QueryValueEx, OpenKey |
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77 except ImportError: |
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78 return None |
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79 |
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80 if scope is None: |
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81 scope = (HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE) |
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82 elif not isinstance(scope, (list, tuple)): |
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83 scope = (scope,) |
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84 for s in scope: |
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85 try: |
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86 val = QueryValueEx(OpenKey(s, key), valname)[0] |
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87 # never let a Unicode string escape into the wild |
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88 return encoding.tolocal(val.encode('UTF-8')) |
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89 except EnvironmentError: |
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90 pass |
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91 |
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93 '''return default os-specific hgrc search path''' |
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94 proc = win32api.GetCurrentProcess() |
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95 try: |
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96 # This will fail on windows < NT |
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97 filename = win32process.GetModuleFileNameEx(proc, 0) |
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98 except: |
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99 filename = win32api.GetModuleFileName(0) |
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100 # Use mercurial.ini found in directory with hg.exe |
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101 progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini') |
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102 if os.path.isfile(progrc): |
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103 return [progrc] |
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104 # else look for a system rcpath in the registry |
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105 try: |
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106 value = win32api.RegQueryValue( |
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107 win32con.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Mercurial') |
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108 rcpath = [] |
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109 for p in value.split(os.pathsep): |
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110 if p.lower().endswith('mercurial.ini'): |
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111 rcpath.append(p) |
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112 elif os.path.isdir(p): |
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113 for f, kind in osutil.listdir(p): |
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114 if f.endswith('.rc'): |
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115 rcpath.append(os.path.join(p, f)) |
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116 return rcpath |
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117 except pywintypes.error: |
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118 return [] |
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119 |
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120 def user_rcpath_win32(): |
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121 '''return os-specific hgrc search path to the user dir''' |
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122 userdir = os.path.expanduser('~') |
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123 if sys.getwindowsversion()[3] != 2 and userdir == '~': |
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124 # We are on win < nt: fetch the APPDATA directory location and use |
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125 # the parent directory as the user home dir. |
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126 appdir = shell.SHGetPathFromIDList( |
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127 shell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_APPDATA)) |
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128 userdir = os.path.dirname(appdir) |
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129 return [os.path.join(userdir, 'mercurial.ini'), |
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130 os.path.join(userdir, '.hgrc')] |
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131 |
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132 def getuser(): |
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133 '''return name of current user''' |
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134 return win32api.GetUserName() |
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135 |
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136 def set_signal_handler_win32(): |
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137 """Register a termination handler for console events including |
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138 CTRL+C. python signal handlers do not work well with socket |
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139 operations. |
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140 """ |
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141 def handler(event): |
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142 win32process.ExitProcess(1) |
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143 win32api.SetConsoleCtrlHandler(handler) |
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144 |