Mercurial > hg
annotate mercurial/win32.py @ 14605:9f1139cf5c76
hg: rearrange peer scheme lookup
There is now only peer scheme lookup. Repository lookup goes through
peer scheme lookup. When peer and repo types are finally separated,
repo lookup will use peer.local() to get a repository object.
The underbar is dropped so that extensions can patch the table.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Mon, 13 Jun 2011 14:53:23 -0500 |
parents | bf9a105aed0a |
children | ec222a29bdf0 |
rev | line source |
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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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import encoding |
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9 import ctypes, errno, os, struct, subprocess, random |
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10 |
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11 _kernel32 = ctypes.windll.kernel32 |
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12 _advapi32 = ctypes.windll.advapi32 |
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13 _user32 = ctypes.windll.user32 |
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14 |
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15 _BOOL = ctypes.c_long |
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16 _WORD = ctypes.c_ushort |
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17 _DWORD = ctypes.c_ulong |
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18 _UINT = ctypes.c_uint |
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19 _LONG = ctypes.c_long |
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20 _LPCSTR = _LPSTR = ctypes.c_char_p |
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21 _HANDLE = ctypes.c_void_p |
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22 _HWND = _HANDLE |
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23 |
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24 _INVALID_HANDLE_VALUE = _HANDLE(-1).value |
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25 |
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26 # GetLastError |
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27 _ERROR_SUCCESS = 0 |
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28 _ERROR_INVALID_PARAMETER = 87 |
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29 _ERROR_INSUFFICIENT_BUFFER = 122 |
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30 |
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31 # WPARAM is defined as UINT_PTR (unsigned type) |
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32 # LPARAM is defined as LONG_PTR (signed type) |
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33 if ctypes.sizeof(ctypes.c_long) == ctypes.sizeof(ctypes.c_void_p): |
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34 _WPARAM = ctypes.c_ulong |
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35 _LPARAM = ctypes.c_long |
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36 elif ctypes.sizeof(ctypes.c_longlong) == ctypes.sizeof(ctypes.c_void_p): |
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37 _WPARAM = ctypes.c_ulonglong |
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38 _LPARAM = ctypes.c_longlong |
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39 |
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40 class _FILETIME(ctypes.Structure): |
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41 _fields_ = [('dwLowDateTime', _DWORD), |
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42 ('dwHighDateTime', _DWORD)] |
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43 |
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44 class _BY_HANDLE_FILE_INFORMATION(ctypes.Structure): |
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45 _fields_ = [('dwFileAttributes', _DWORD), |
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46 ('ftCreationTime', _FILETIME), |
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47 ('ftLastAccessTime', _FILETIME), |
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48 ('ftLastWriteTime', _FILETIME), |
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49 ('dwVolumeSerialNumber', _DWORD), |
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50 ('nFileSizeHigh', _DWORD), |
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51 ('nFileSizeLow', _DWORD), |
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52 ('nNumberOfLinks', _DWORD), |
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53 ('nFileIndexHigh', _DWORD), |
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54 ('nFileIndexLow', _DWORD)] |
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55 |
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56 # CreateFile |
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57 _FILE_SHARE_READ = 0x00000001 |
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58 _FILE_SHARE_WRITE = 0x00000002 |
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59 _FILE_SHARE_DELETE = 0x00000004 |
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60 |
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61 _OPEN_EXISTING = 3 |
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62 |
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63 # SetFileAttributes |
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64 _FILE_ATTRIBUTE_NORMAL = 0x80 |
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65 _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000 |
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66 |
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67 # Process Security and Access Rights |
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68 _PROCESS_QUERY_INFORMATION = 0x0400 |
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69 |
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70 # GetExitCodeProcess |
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71 _STILL_ACTIVE = 259 |
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72 |
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73 # registry |
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74 _HKEY_CURRENT_USER = 0x80000001L |
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75 _HKEY_LOCAL_MACHINE = 0x80000002L |
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76 _KEY_READ = 0x20019 |
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77 _REG_SZ = 1 |
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78 _REG_DWORD = 4 |
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79 |
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80 class _STARTUPINFO(ctypes.Structure): |
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81 _fields_ = [('cb', _DWORD), |
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82 ('lpReserved', _LPSTR), |
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83 ('lpDesktop', _LPSTR), |
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84 ('lpTitle', _LPSTR), |
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85 ('dwX', _DWORD), |
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86 ('dwY', _DWORD), |
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87 ('dwXSize', _DWORD), |
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88 ('dwYSize', _DWORD), |
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89 ('dwXCountChars', _DWORD), |
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90 ('dwYCountChars', _DWORD), |
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91 ('dwFillAttribute', _DWORD), |
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92 ('dwFlags', _DWORD), |
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93 ('wShowWindow', _WORD), |
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94 ('cbReserved2', _WORD), |
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95 ('lpReserved2', ctypes.c_char_p), |
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96 ('hStdInput', _HANDLE), |
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97 ('hStdOutput', _HANDLE), |
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98 ('hStdError', _HANDLE)] |
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99 |
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100 class _PROCESS_INFORMATION(ctypes.Structure): |
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101 _fields_ = [('hProcess', _HANDLE), |
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102 ('hThread', _HANDLE), |
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103 ('dwProcessId', _DWORD), |
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104 ('dwThreadId', _DWORD)] |
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105 |
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106 _DETACHED_PROCESS = 0x00000008 |
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107 _STARTF_USESHOWWINDOW = 0x00000001 |
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108 _SW_HIDE = 0 |
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109 |
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110 class _COORD(ctypes.Structure): |
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111 _fields_ = [('X', ctypes.c_short), |
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112 ('Y', ctypes.c_short)] |
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113 |
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114 class _SMALL_RECT(ctypes.Structure): |
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115 _fields_ = [('Left', ctypes.c_short), |
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116 ('Top', ctypes.c_short), |
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117 ('Right', ctypes.c_short), |
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118 ('Bottom', ctypes.c_short)] |
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119 |
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120 class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure): |
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121 _fields_ = [('dwSize', _COORD), |
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122 ('dwCursorPosition', _COORD), |
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123 ('wAttributes', _WORD), |
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124 ('srWindow', _SMALL_RECT), |
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125 ('dwMaximumWindowSize', _COORD)] |
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126 |
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127 _STD_ERROR_HANDLE = _DWORD(-12).value |
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128 |
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129 # types of parameters of C functions used (required by pypy) |
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130 |
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131 _kernel32.CreateFileA.argtypes = [_LPCSTR, _DWORD, _DWORD, ctypes.c_void_p, |
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132 _DWORD, _DWORD, _HANDLE] |
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133 _kernel32.CreateFileA.restype = _HANDLE |
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134 |
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135 _kernel32.GetFileInformationByHandle.argtypes = [_HANDLE, ctypes.c_void_p] |
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136 _kernel32.GetFileInformationByHandle.restype = _BOOL |
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137 |
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138 _kernel32.CloseHandle.argtypes = [_HANDLE] |
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139 _kernel32.CloseHandle.restype = _BOOL |
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140 |
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141 _kernel32.CreateHardLinkA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p] |
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142 _kernel32.CreateHardLinkA.restype = _BOOL |
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143 |
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144 _kernel32.SetFileAttributesA.argtypes = [_LPCSTR, _DWORD] |
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145 _kernel32.SetFileAttributesA.restype = _BOOL |
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146 |
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147 _kernel32.OpenProcess.argtypes = [_DWORD, _BOOL, _DWORD] |
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148 _kernel32.OpenProcess.restype = _HANDLE |
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149 |
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150 _kernel32.GetExitCodeProcess.argtypes = [_HANDLE, ctypes.c_void_p] |
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151 _kernel32.GetExitCodeProcess.restype = _BOOL |
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152 |
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153 _kernel32.GetLastError.argtypes = [] |
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154 _kernel32.GetLastError.restype = _DWORD |
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155 |
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156 _kernel32.GetModuleFileNameA.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD] |
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157 _kernel32.GetModuleFileNameA.restype = _DWORD |
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158 |
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159 _kernel32.CreateProcessA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p, |
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160 ctypes.c_void_p, _BOOL, _DWORD, ctypes.c_void_p, _LPCSTR, ctypes.c_void_p, |
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161 ctypes.c_void_p] |
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162 _kernel32.CreateProcessA.restype = _BOOL |
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163 |
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164 _kernel32.ExitProcess.argtypes = [_UINT] |
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165 _kernel32.ExitProcess.restype = None |
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166 |
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167 _kernel32.GetCurrentProcessId.argtypes = [] |
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168 _kernel32.GetCurrentProcessId.restype = _DWORD |
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169 |
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170 _SIGNAL_HANDLER = ctypes.WINFUNCTYPE(_BOOL, _DWORD) |
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171 _kernel32.SetConsoleCtrlHandler.argtypes = [_SIGNAL_HANDLER, _BOOL] |
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172 _kernel32.SetConsoleCtrlHandler.restype = _BOOL |
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173 |
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174 _kernel32.GetStdHandle.argtypes = [_DWORD] |
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175 _kernel32.GetStdHandle.restype = _HANDLE |
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176 |
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177 _kernel32.GetConsoleScreenBufferInfo.argtypes = [_HANDLE, ctypes.c_void_p] |
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178 _kernel32.GetConsoleScreenBufferInfo.restype = _BOOL |
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179 |
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180 _advapi32.RegOpenKeyExA.argtypes = [_HANDLE, _LPCSTR, _DWORD, _DWORD, |
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181 ctypes.c_void_p] |
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182 _advapi32.RegOpenKeyExA.restype = _LONG |
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183 |
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184 _advapi32.RegQueryValueExA.argtypes = [_HANDLE, _LPCSTR, ctypes.c_void_p, |
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185 ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p] |
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186 _advapi32.RegQueryValueExA.restype = _LONG |
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187 |
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188 _advapi32.RegCloseKey.argtypes = [_HANDLE] |
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189 _advapi32.RegCloseKey.restype = _LONG |
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190 |
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191 _advapi32.GetUserNameA.argtypes = [ctypes.c_void_p, ctypes.c_void_p] |
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192 _advapi32.GetUserNameA.restype = _BOOL |
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193 |
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194 _user32.GetWindowThreadProcessId.argtypes = [_HANDLE, ctypes.c_void_p] |
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195 _user32.GetWindowThreadProcessId.restype = _DWORD |
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196 |
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197 _user32.ShowWindow.argtypes = [_HANDLE, ctypes.c_int] |
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198 _user32.ShowWindow.restype = _BOOL |
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199 |
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200 _WNDENUMPROC = ctypes.WINFUNCTYPE(_BOOL, _HWND, _LPARAM) |
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201 _user32.EnumWindows.argtypes = [_WNDENUMPROC, _LPARAM] |
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202 _user32.EnumWindows.restype = _BOOL |
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203 |
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204 def _raiseoserror(name): |
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205 err = ctypes.WinError() |
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206 raise OSError(err.errno, '%s: %s' % (name, err.strerror)) |
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207 |
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208 def _getfileinfo(name): |
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209 fh = _kernel32.CreateFileA(name, 0, |
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210 _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE, |
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211 None, _OPEN_EXISTING, 0, None) |
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212 if fh == _INVALID_HANDLE_VALUE: |
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213 _raiseoserror(name) |
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214 try: |
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215 fi = _BY_HANDLE_FILE_INFORMATION() |
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216 if not _kernel32.GetFileInformationByHandle(fh, ctypes.byref(fi)): |
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217 _raiseoserror(name) |
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218 return fi |
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219 finally: |
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220 _kernel32.CloseHandle(fh) |
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221 |
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222 def oslink(src, dst): |
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223 try: |
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224 if not _kernel32.CreateHardLinkA(dst, src, None): |
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225 _raiseoserror(src) |
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226 except AttributeError: # Wine doesn't support this function |
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227 _raiseoserror(src) |
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228 |
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229 def nlinks(name): |
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230 '''return number of hardlinks for the given file''' |
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231 return _getfileinfo(name).nNumberOfLinks |
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232 |
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233 def samefile(fpath1, fpath2): |
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234 '''Returns whether fpath1 and fpath2 refer to the same file. This is only |
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235 guaranteed to work for files, not directories.''' |
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236 res1 = _getfileinfo(fpath1) |
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237 res2 = _getfileinfo(fpath2) |
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238 return (res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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239 and res1.nFileIndexHigh == res2.nFileIndexHigh |
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240 and res1.nFileIndexLow == res2.nFileIndexLow) |
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241 |
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242 def samedevice(fpath1, fpath2): |
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243 '''Returns whether fpath1 and fpath2 are on the same device. This is only |
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244 guaranteed to work for files, not directories.''' |
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245 res1 = _getfileinfo(fpath1) |
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246 res2 = _getfileinfo(fpath2) |
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247 return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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248 |
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249 def testpid(pid): |
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250 '''return True if pid is still running or unable to |
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251 determine, False otherwise''' |
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252 h = _kernel32.OpenProcess(_PROCESS_QUERY_INFORMATION, False, pid) |
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253 if h: |
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254 try: |
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255 status = _DWORD() |
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256 if _kernel32.GetExitCodeProcess(h, ctypes.byref(status)): |
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257 return status.value == _STILL_ACTIVE |
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258 finally: |
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259 _kernel32.CloseHandle(h) |
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260 return _kernel32.GetLastError() != _ERROR_INVALID_PARAMETER |
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261 |
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262 def lookupreg(key, valname=None, scope=None): |
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263 ''' Look up a key/value name in the Windows registry. |
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264 |
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265 valname: value name. If unspecified, the default value for the key |
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266 is used. |
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267 scope: optionally specify scope for registry lookup, this can be |
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268 a sequence of scopes to look up in order. Default (CURRENT_USER, |
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269 LOCAL_MACHINE). |
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270 ''' |
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271 byref = ctypes.byref |
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272 if scope is None: |
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273 scope = (_HKEY_CURRENT_USER, _HKEY_LOCAL_MACHINE) |
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274 elif not isinstance(scope, (list, tuple)): |
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275 scope = (scope,) |
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276 for s in scope: |
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277 kh = _HANDLE() |
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278 res = _advapi32.RegOpenKeyExA(s, key, 0, _KEY_READ, ctypes.byref(kh)) |
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279 if res != _ERROR_SUCCESS: |
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280 continue |
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281 try: |
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282 size = _DWORD(600) |
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283 type = _DWORD() |
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284 buf = ctypes.create_string_buffer(size.value + 1) |
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285 res = _advapi32.RegQueryValueExA(kh.value, valname, None, |
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286 byref(type), buf, byref(size)) |
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287 if res != _ERROR_SUCCESS: |
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288 continue |
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289 if type.value == _REG_SZ: |
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290 # never let a Unicode string escape into the wild |
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291 return encoding.tolocal(buf.value.encode('UTF-8')) |
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292 elif type.value == _REG_DWORD: |
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293 fmt = '<L' |
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294 s = ctypes.string_at(byref(buf), struct.calcsize(fmt)) |
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295 return struct.unpack(fmt, s)[0] |
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296 finally: |
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297 _advapi32.RegCloseKey(kh.value) |
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298 |
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299 def executablepath(): |
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300 '''return full path of hg.exe''' |
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301 size = 600 |
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302 buf = ctypes.create_string_buffer(size + 1) |
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303 len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size) |
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304 if len == 0: |
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305 raise ctypes.WinError() |
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306 elif len == size: |
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307 raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER) |
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308 return buf.value |
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309 |
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310 def getuser(): |
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311 '''return name of current user''' |
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312 size = _DWORD(300) |
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313 buf = ctypes.create_string_buffer(size.value + 1) |
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314 if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)): |
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315 raise ctypes.WinError() |
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316 return buf.value |
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317 |
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318 _signalhandler = [] |
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319 |
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320 def setsignalhandler(): |
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321 '''Register a termination handler for console events including |
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322 CTRL+C. python signal handlers do not work well with socket |
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323 operations. |
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324 ''' |
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325 def handler(event): |
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326 _kernel32.ExitProcess(1) |
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327 |
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328 if _signalhandler: |
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329 return # already registered |
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330 h = _SIGNAL_HANDLER(handler) |
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331 _signalhandler.append(h) # needed to prevent garbage collection |
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332 if not _kernel32.SetConsoleCtrlHandler(h, True): |
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333 raise ctypes.WinError() |
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334 |
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335 def hidewindow(): |
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336 |
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337 def callback(hwnd, pid): |
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338 wpid = _DWORD() |
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339 _user32.GetWindowThreadProcessId(hwnd, ctypes.byref(wpid)) |
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340 if pid == wpid.value: |
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341 _user32.ShowWindow(hwnd, _SW_HIDE) |
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342 return False # stop enumerating windows |
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343 return True |
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344 |
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345 pid = _kernel32.GetCurrentProcessId() |
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346 _user32.EnumWindows(_WNDENUMPROC(callback), pid) |
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347 |
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348 def termwidth(): |
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349 # cmd.exe does not handle CR like a unix console, the CR is |
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350 # counted in the line length. On 80 columns consoles, if 80 |
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351 # characters are written, the following CR won't apply on the |
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352 # current line but on the new one. Keep room for it. |
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353 width = 79 |
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354 # Query stderr to avoid problems with redirections |
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355 screenbuf = _kernel32.GetStdHandle( |
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356 _STD_ERROR_HANDLE) # don't close the handle returned |
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357 if screenbuf is None or screenbuf == _INVALID_HANDLE_VALUE: |
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358 return width |
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359 csbi = _CONSOLE_SCREEN_BUFFER_INFO() |
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360 if not _kernel32.GetConsoleScreenBufferInfo( |
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361 screenbuf, ctypes.byref(csbi)): |
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362 return width |
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363 width = csbi.srWindow.Right - csbi.srWindow.Left |
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364 return width |
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365 |
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366 def spawndetached(args): |
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367 # No standard library function really spawns a fully detached |
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368 # process under win32 because they allocate pipes or other objects |
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369 # to handle standard streams communications. Passing these objects |
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370 # to the child process requires handle inheritance to be enabled |
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371 # which makes really detached processes impossible. |
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372 si = _STARTUPINFO() |
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373 si.cb = ctypes.sizeof(_STARTUPINFO) |
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374 si.dwFlags = _STARTF_USESHOWWINDOW |
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375 si.wShowWindow = _SW_HIDE |
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376 |
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377 pi = _PROCESS_INFORMATION() |
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378 |
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379 env = '' |
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380 for k in os.environ: |
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381 env += "%s=%s\0" % (k, os.environ[k]) |
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382 if not env: |
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383 env = '\0' |
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384 env += '\0' |
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385 |
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386 args = subprocess.list2cmdline(args) |
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387 # Not running the command in shell mode makes python26 hang when |
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388 # writing to hgweb output socket. |
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389 comspec = os.environ.get("COMSPEC", "cmd.exe") |
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390 args = comspec + " /c " + args |
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391 |
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392 res = _kernel32.CreateProcessA( |
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393 None, args, None, None, False, _DETACHED_PROCESS, |
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394 env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi)) |
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395 if not res: |
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396 raise ctypes.WinError() |
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397 |
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398 return pi.dwProcessId |
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399 |
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400 def unlink(f): |
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401 '''try to implement POSIX' unlink semantics on Windows''' |
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402 |
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403 # POSIX allows to unlink and rename open files. Windows has serious |
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404 # problems with doing that: |
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405 # - Calling os.unlink (or os.rename) on a file f fails if f or any |
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406 # hardlinked copy of f has been opened with Python's open(). There is no |
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407 # way such a file can be deleted or renamed on Windows (other than |
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408 # scheduling the delete or rename for the next reboot). |
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409 # - Calling os.unlink on a file that has been opened with Mercurial's |
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410 # posixfile (or comparable methods) will delay the actual deletion of |
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411 # the file for as long as the file is held open. The filename is blocked |
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412 # during that time and cannot be used for recreating a new file under |
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413 # that same name ("zombie file"). Directories containing such zombie files |
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414 # cannot be removed or moved. |
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415 # A file that has been opened with posixfile can be renamed, so we rename |
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416 # f to a random temporary name before calling os.unlink on it. This allows |
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417 # callers to recreate f immediately while having other readers do their |
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418 # implicit zombie filename blocking on a temporary name. |
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419 |
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420 for tries in xrange(10): |
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421 temp = '%s-%08x' % (f, random.randint(0, 0xffffffff)) |
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422 try: |
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423 os.rename(f, temp) # raises OSError EEXIST if temp exists |
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424 break |
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425 except OSError, e: |
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426 if e.errno != errno.EEXIST: |
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427 raise |
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428 else: |
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429 raise IOError, (errno.EEXIST, "No usable temporary filename found") |
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430 |
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431 try: |
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432 os.unlink(temp) |
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433 except OSError: |
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434 # The unlink might have failed because the READONLY attribute may heave |
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435 # been set on the original file. Rename works fine with READONLY set, |
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436 # but not os.unlink. Reset all attributes and try again. |
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437 _kernel32.SetFileAttributesA(temp, _FILE_ATTRIBUTE_NORMAL) |
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438 try: |
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439 os.unlink(temp) |
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win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
13775
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440 except OSError: |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
13775
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441 # The unlink might have failed due to some very rude AV-Scanners. |
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win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
13775
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442 # Leaking a tempfile is the lesser evil than aborting here and |
a2f0fdb1e488
win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
13775
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443 # leaving some potentially serious inconsistencies. |
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win32: remove READONLY attribute on unlink
Adrian Buehlmann <adrian@cadifra.com>
parents:
13775
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444 pass |
13795
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
13776
diff
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445 |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
13776
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446 def makedir(path, notindexed): |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
13776
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447 os.mkdir(path) |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
13776
diff
changeset
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448 if notindexed: |
43b5fe18ea6c
set NOT_CONTENT_INDEXED on .hg dir (issue2694)
Adrian Buehlmann <adrian@cadifra.com>
parents:
13776
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449 _kernel32.SetFileAttributesA(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) |