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@@ -1,396 +1,396 b'' | |||
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1 | 1 | # win32.py - utility functions that use win32 API |
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2 | 2 | # |
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3 | 3 | # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | import ctypes, errno, os, subprocess, random |
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9 | 9 | |
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10 | 10 | _kernel32 = ctypes.windll.kernel32 |
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11 | 11 | _advapi32 = ctypes.windll.advapi32 |
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12 | 12 | _user32 = ctypes.windll.user32 |
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13 | 13 | |
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14 | 14 | _BOOL = ctypes.c_long |
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15 | 15 | _WORD = ctypes.c_ushort |
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16 | 16 | _DWORD = ctypes.c_ulong |
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17 | 17 | _UINT = ctypes.c_uint |
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18 | 18 | _LONG = ctypes.c_long |
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19 | 19 | _LPCSTR = _LPSTR = ctypes.c_char_p |
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20 | 20 | _HANDLE = ctypes.c_void_p |
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21 | 21 | _HWND = _HANDLE |
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22 | 22 | |
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23 | 23 | _INVALID_HANDLE_VALUE = _HANDLE(-1).value |
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24 | 24 | |
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25 | 25 | # GetLastError |
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26 | 26 | _ERROR_SUCCESS = 0 |
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27 | 27 | _ERROR_INVALID_PARAMETER = 87 |
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28 | 28 | _ERROR_INSUFFICIENT_BUFFER = 122 |
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29 | 29 | |
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30 | 30 | # WPARAM is defined as UINT_PTR (unsigned type) |
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31 | 31 | # LPARAM is defined as LONG_PTR (signed type) |
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32 | 32 | if ctypes.sizeof(ctypes.c_long) == ctypes.sizeof(ctypes.c_void_p): |
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33 | 33 | _WPARAM = ctypes.c_ulong |
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34 | 34 | _LPARAM = ctypes.c_long |
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35 | 35 | elif ctypes.sizeof(ctypes.c_longlong) == ctypes.sizeof(ctypes.c_void_p): |
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36 | 36 | _WPARAM = ctypes.c_ulonglong |
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37 | 37 | _LPARAM = ctypes.c_longlong |
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38 | 38 | |
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39 | 39 | class _FILETIME(ctypes.Structure): |
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40 | 40 | _fields_ = [('dwLowDateTime', _DWORD), |
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41 | 41 | ('dwHighDateTime', _DWORD)] |
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42 | 42 | |
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43 | 43 | class _BY_HANDLE_FILE_INFORMATION(ctypes.Structure): |
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44 | 44 | _fields_ = [('dwFileAttributes', _DWORD), |
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45 | 45 | ('ftCreationTime', _FILETIME), |
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46 | 46 | ('ftLastAccessTime', _FILETIME), |
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47 | 47 | ('ftLastWriteTime', _FILETIME), |
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48 | 48 | ('dwVolumeSerialNumber', _DWORD), |
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49 | 49 | ('nFileSizeHigh', _DWORD), |
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50 | 50 | ('nFileSizeLow', _DWORD), |
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51 | 51 | ('nNumberOfLinks', _DWORD), |
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52 | 52 | ('nFileIndexHigh', _DWORD), |
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53 | 53 | ('nFileIndexLow', _DWORD)] |
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54 | 54 | |
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55 | 55 | # CreateFile |
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56 | 56 | _FILE_SHARE_READ = 0x00000001 |
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57 | 57 | _FILE_SHARE_WRITE = 0x00000002 |
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58 | 58 | _FILE_SHARE_DELETE = 0x00000004 |
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59 | 59 | |
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60 | 60 | _OPEN_EXISTING = 3 |
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61 | 61 | |
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62 | _FILE_FLAG_BACKUP_SEMANTICS = 0x02000000 | |
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63 | ||
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62 | 64 | # SetFileAttributes |
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63 | 65 | _FILE_ATTRIBUTE_NORMAL = 0x80 |
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64 | 66 | _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000 |
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65 | 67 | |
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66 | 68 | # Process Security and Access Rights |
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67 | 69 | _PROCESS_QUERY_INFORMATION = 0x0400 |
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68 | 70 | |
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69 | 71 | # GetExitCodeProcess |
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70 | 72 | _STILL_ACTIVE = 259 |
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71 | 73 | |
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72 | 74 | class _STARTUPINFO(ctypes.Structure): |
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73 | 75 | _fields_ = [('cb', _DWORD), |
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74 | 76 | ('lpReserved', _LPSTR), |
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75 | 77 | ('lpDesktop', _LPSTR), |
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76 | 78 | ('lpTitle', _LPSTR), |
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77 | 79 | ('dwX', _DWORD), |
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78 | 80 | ('dwY', _DWORD), |
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79 | 81 | ('dwXSize', _DWORD), |
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80 | 82 | ('dwYSize', _DWORD), |
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81 | 83 | ('dwXCountChars', _DWORD), |
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82 | 84 | ('dwYCountChars', _DWORD), |
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83 | 85 | ('dwFillAttribute', _DWORD), |
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84 | 86 | ('dwFlags', _DWORD), |
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85 | 87 | ('wShowWindow', _WORD), |
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86 | 88 | ('cbReserved2', _WORD), |
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87 | 89 | ('lpReserved2', ctypes.c_char_p), |
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88 | 90 | ('hStdInput', _HANDLE), |
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89 | 91 | ('hStdOutput', _HANDLE), |
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90 | 92 | ('hStdError', _HANDLE)] |
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91 | 93 | |
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92 | 94 | class _PROCESS_INFORMATION(ctypes.Structure): |
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93 | 95 | _fields_ = [('hProcess', _HANDLE), |
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94 | 96 | ('hThread', _HANDLE), |
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95 | 97 | ('dwProcessId', _DWORD), |
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96 | 98 | ('dwThreadId', _DWORD)] |
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97 | 99 | |
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98 | 100 | _DETACHED_PROCESS = 0x00000008 |
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99 | 101 | _STARTF_USESHOWWINDOW = 0x00000001 |
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100 | 102 | _SW_HIDE = 0 |
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101 | 103 | |
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102 | 104 | class _COORD(ctypes.Structure): |
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103 | 105 | _fields_ = [('X', ctypes.c_short), |
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104 | 106 | ('Y', ctypes.c_short)] |
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105 | 107 | |
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106 | 108 | class _SMALL_RECT(ctypes.Structure): |
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107 | 109 | _fields_ = [('Left', ctypes.c_short), |
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108 | 110 | ('Top', ctypes.c_short), |
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109 | 111 | ('Right', ctypes.c_short), |
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110 | 112 | ('Bottom', ctypes.c_short)] |
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111 | 113 | |
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112 | 114 | class _CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure): |
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113 | 115 | _fields_ = [('dwSize', _COORD), |
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114 | 116 | ('dwCursorPosition', _COORD), |
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115 | 117 | ('wAttributes', _WORD), |
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116 | 118 | ('srWindow', _SMALL_RECT), |
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117 | 119 | ('dwMaximumWindowSize', _COORD)] |
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118 | 120 | |
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119 | 121 | _STD_ERROR_HANDLE = _DWORD(-12).value |
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120 | 122 | |
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121 | 123 | # types of parameters of C functions used (required by pypy) |
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122 | 124 | |
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123 | 125 | _kernel32.CreateFileA.argtypes = [_LPCSTR, _DWORD, _DWORD, ctypes.c_void_p, |
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124 | 126 | _DWORD, _DWORD, _HANDLE] |
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125 | 127 | _kernel32.CreateFileA.restype = _HANDLE |
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126 | 128 | |
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127 | 129 | _kernel32.GetFileInformationByHandle.argtypes = [_HANDLE, ctypes.c_void_p] |
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128 | 130 | _kernel32.GetFileInformationByHandle.restype = _BOOL |
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129 | 131 | |
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130 | 132 | _kernel32.CloseHandle.argtypes = [_HANDLE] |
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131 | 133 | _kernel32.CloseHandle.restype = _BOOL |
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132 | 134 | |
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133 | 135 | try: |
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134 | 136 | _kernel32.CreateHardLinkA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p] |
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135 | 137 | _kernel32.CreateHardLinkA.restype = _BOOL |
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136 | 138 | except AttributeError: |
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137 | 139 | pass |
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138 | 140 | |
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139 | 141 | _kernel32.SetFileAttributesA.argtypes = [_LPCSTR, _DWORD] |
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140 | 142 | _kernel32.SetFileAttributesA.restype = _BOOL |
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141 | 143 | |
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142 | 144 | _kernel32.OpenProcess.argtypes = [_DWORD, _BOOL, _DWORD] |
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143 | 145 | _kernel32.OpenProcess.restype = _HANDLE |
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144 | 146 | |
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145 | 147 | _kernel32.GetExitCodeProcess.argtypes = [_HANDLE, ctypes.c_void_p] |
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146 | 148 | _kernel32.GetExitCodeProcess.restype = _BOOL |
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147 | 149 | |
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148 | 150 | _kernel32.GetLastError.argtypes = [] |
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149 | 151 | _kernel32.GetLastError.restype = _DWORD |
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150 | 152 | |
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151 | 153 | _kernel32.GetModuleFileNameA.argtypes = [_HANDLE, ctypes.c_void_p, _DWORD] |
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152 | 154 | _kernel32.GetModuleFileNameA.restype = _DWORD |
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153 | 155 | |
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154 | 156 | _kernel32.CreateProcessA.argtypes = [_LPCSTR, _LPCSTR, ctypes.c_void_p, |
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155 | 157 | ctypes.c_void_p, _BOOL, _DWORD, ctypes.c_void_p, _LPCSTR, ctypes.c_void_p, |
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156 | 158 | ctypes.c_void_p] |
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157 | 159 | _kernel32.CreateProcessA.restype = _BOOL |
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158 | 160 | |
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159 | 161 | _kernel32.ExitProcess.argtypes = [_UINT] |
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160 | 162 | _kernel32.ExitProcess.restype = None |
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161 | 163 | |
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162 | 164 | _kernel32.GetCurrentProcessId.argtypes = [] |
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163 | 165 | _kernel32.GetCurrentProcessId.restype = _DWORD |
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164 | 166 | |
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165 | 167 | _SIGNAL_HANDLER = ctypes.WINFUNCTYPE(_BOOL, _DWORD) |
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166 | 168 | _kernel32.SetConsoleCtrlHandler.argtypes = [_SIGNAL_HANDLER, _BOOL] |
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167 | 169 | _kernel32.SetConsoleCtrlHandler.restype = _BOOL |
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168 | 170 | |
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169 | 171 | _kernel32.GetStdHandle.argtypes = [_DWORD] |
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170 | 172 | _kernel32.GetStdHandle.restype = _HANDLE |
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171 | 173 | |
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172 | 174 | _kernel32.GetConsoleScreenBufferInfo.argtypes = [_HANDLE, ctypes.c_void_p] |
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173 | 175 | _kernel32.GetConsoleScreenBufferInfo.restype = _BOOL |
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174 | 176 | |
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175 | 177 | _advapi32.GetUserNameA.argtypes = [ctypes.c_void_p, ctypes.c_void_p] |
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176 | 178 | _advapi32.GetUserNameA.restype = _BOOL |
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177 | 179 | |
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178 | 180 | _user32.GetWindowThreadProcessId.argtypes = [_HANDLE, ctypes.c_void_p] |
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179 | 181 | _user32.GetWindowThreadProcessId.restype = _DWORD |
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180 | 182 | |
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181 | 183 | _user32.ShowWindow.argtypes = [_HANDLE, ctypes.c_int] |
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182 | 184 | _user32.ShowWindow.restype = _BOOL |
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183 | 185 | |
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184 | 186 | _WNDENUMPROC = ctypes.WINFUNCTYPE(_BOOL, _HWND, _LPARAM) |
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185 | 187 | _user32.EnumWindows.argtypes = [_WNDENUMPROC, _LPARAM] |
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186 | 188 | _user32.EnumWindows.restype = _BOOL |
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187 | 189 | |
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188 | 190 | def _raiseoserror(name): |
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189 | 191 | err = ctypes.WinError() |
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190 | 192 | raise OSError(err.errno, '%s: %s' % (name, err.strerror)) |
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191 | 193 | |
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192 | 194 | def _getfileinfo(name): |
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193 | 195 | fh = _kernel32.CreateFileA(name, 0, |
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194 | 196 | _FILE_SHARE_READ | _FILE_SHARE_WRITE | _FILE_SHARE_DELETE, |
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195 |
None, _OPEN_EXISTING, |
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197 | None, _OPEN_EXISTING, _FILE_FLAG_BACKUP_SEMANTICS, None) | |
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196 | 198 | if fh == _INVALID_HANDLE_VALUE: |
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197 | 199 | _raiseoserror(name) |
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198 | 200 | try: |
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199 | 201 | fi = _BY_HANDLE_FILE_INFORMATION() |
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200 | 202 | if not _kernel32.GetFileInformationByHandle(fh, ctypes.byref(fi)): |
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201 | 203 | _raiseoserror(name) |
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202 | 204 | return fi |
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203 | 205 | finally: |
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204 | 206 | _kernel32.CloseHandle(fh) |
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205 | 207 | |
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206 | 208 | def oslink(src, dst): |
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207 | 209 | try: |
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208 | 210 | if not _kernel32.CreateHardLinkA(dst, src, None): |
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209 | 211 | _raiseoserror(src) |
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210 | 212 | except AttributeError: # Wine doesn't support this function |
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211 | 213 | _raiseoserror(src) |
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212 | 214 | |
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213 | 215 | def nlinks(name): |
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214 | 216 | '''return number of hardlinks for the given file''' |
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215 | 217 | return _getfileinfo(name).nNumberOfLinks |
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216 | 218 | |
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217 |
def samefile( |
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|
218 |
'''Returns whether |
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219 | guaranteed to work for files, not directories.''' | |
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220 |
res |
|
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221 | res2 = _getfileinfo(fpath2) | |
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219 | def samefile(path1, path2): | |
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220 | '''Returns whether path1 and path2 refer to the same file or directory.''' | |
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221 | res1 = _getfileinfo(path1) | |
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222 | res2 = _getfileinfo(path2) | |
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222 | 223 | return (res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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223 | 224 | and res1.nFileIndexHigh == res2.nFileIndexHigh |
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224 | 225 | and res1.nFileIndexLow == res2.nFileIndexLow) |
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225 | 226 | |
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226 |
def samedevice( |
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|
227 |
'''Returns whether |
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228 | guaranteed to work for files, not directories.''' | |
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229 |
res |
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230 | res2 = _getfileinfo(fpath2) | |
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227 | def samedevice(path1, path2): | |
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228 | '''Returns whether path1 and path2 are on the same device.''' | |
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229 | res1 = _getfileinfo(path1) | |
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230 | res2 = _getfileinfo(path2) | |
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231 | 231 | return res1.dwVolumeSerialNumber == res2.dwVolumeSerialNumber |
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232 | 232 | |
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233 | 233 | def testpid(pid): |
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234 | 234 | '''return True if pid is still running or unable to |
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235 | 235 | determine, False otherwise''' |
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236 | 236 | h = _kernel32.OpenProcess(_PROCESS_QUERY_INFORMATION, False, pid) |
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237 | 237 | if h: |
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238 | 238 | try: |
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239 | 239 | status = _DWORD() |
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240 | 240 | if _kernel32.GetExitCodeProcess(h, ctypes.byref(status)): |
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241 | 241 | return status.value == _STILL_ACTIVE |
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242 | 242 | finally: |
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243 | 243 | _kernel32.CloseHandle(h) |
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244 | 244 | return _kernel32.GetLastError() != _ERROR_INVALID_PARAMETER |
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245 | 245 | |
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246 | 246 | def executablepath(): |
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247 | 247 | '''return full path of hg.exe''' |
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248 | 248 | size = 600 |
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249 | 249 | buf = ctypes.create_string_buffer(size + 1) |
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250 | 250 | len = _kernel32.GetModuleFileNameA(None, ctypes.byref(buf), size) |
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251 | 251 | if len == 0: |
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252 | 252 | raise ctypes.WinError |
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253 | 253 | elif len == size: |
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254 | 254 | raise ctypes.WinError(_ERROR_INSUFFICIENT_BUFFER) |
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255 | 255 | return buf.value |
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256 | 256 | |
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257 | 257 | def getuser(): |
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258 | 258 | '''return name of current user''' |
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259 | 259 | size = _DWORD(300) |
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260 | 260 | buf = ctypes.create_string_buffer(size.value + 1) |
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261 | 261 | if not _advapi32.GetUserNameA(ctypes.byref(buf), ctypes.byref(size)): |
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262 | 262 | raise ctypes.WinError |
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263 | 263 | return buf.value |
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264 | 264 | |
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265 | 265 | _signalhandler = [] |
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266 | 266 | |
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267 | 267 | def setsignalhandler(): |
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268 | 268 | '''Register a termination handler for console events including |
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269 | 269 | CTRL+C. python signal handlers do not work well with socket |
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270 | 270 | operations. |
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271 | 271 | ''' |
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272 | 272 | def handler(event): |
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273 | 273 | _kernel32.ExitProcess(1) |
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274 | 274 | |
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275 | 275 | if _signalhandler: |
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276 | 276 | return # already registered |
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277 | 277 | h = _SIGNAL_HANDLER(handler) |
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278 | 278 | _signalhandler.append(h) # needed to prevent garbage collection |
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279 | 279 | if not _kernel32.SetConsoleCtrlHandler(h, True): |
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280 | 280 | raise ctypes.WinError |
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281 | 281 | |
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282 | 282 | def hidewindow(): |
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283 | 283 | |
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284 | 284 | def callback(hwnd, pid): |
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285 | 285 | wpid = _DWORD() |
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286 | 286 | _user32.GetWindowThreadProcessId(hwnd, ctypes.byref(wpid)) |
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287 | 287 | if pid == wpid.value: |
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288 | 288 | _user32.ShowWindow(hwnd, _SW_HIDE) |
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289 | 289 | return False # stop enumerating windows |
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290 | 290 | return True |
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291 | 291 | |
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292 | 292 | pid = _kernel32.GetCurrentProcessId() |
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293 | 293 | _user32.EnumWindows(_WNDENUMPROC(callback), pid) |
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294 | 294 | |
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295 | 295 | def termwidth(): |
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296 | 296 | # cmd.exe does not handle CR like a unix console, the CR is |
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297 | 297 | # counted in the line length. On 80 columns consoles, if 80 |
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298 | 298 | # characters are written, the following CR won't apply on the |
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299 | 299 | # current line but on the new one. Keep room for it. |
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300 | 300 | width = 79 |
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301 | 301 | # Query stderr to avoid problems with redirections |
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302 | 302 | screenbuf = _kernel32.GetStdHandle( |
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303 | 303 | _STD_ERROR_HANDLE) # don't close the handle returned |
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304 | 304 | if screenbuf is None or screenbuf == _INVALID_HANDLE_VALUE: |
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305 | 305 | return width |
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306 | 306 | csbi = _CONSOLE_SCREEN_BUFFER_INFO() |
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307 | 307 | if not _kernel32.GetConsoleScreenBufferInfo( |
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308 | 308 | screenbuf, ctypes.byref(csbi)): |
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309 | 309 | return width |
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310 | 310 | width = csbi.srWindow.Right - csbi.srWindow.Left |
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311 | 311 | return width |
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312 | 312 | |
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313 | 313 | def spawndetached(args): |
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314 | 314 | # No standard library function really spawns a fully detached |
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315 | 315 | # process under win32 because they allocate pipes or other objects |
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316 | 316 | # to handle standard streams communications. Passing these objects |
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317 | 317 | # to the child process requires handle inheritance to be enabled |
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318 | 318 | # which makes really detached processes impossible. |
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319 | 319 | si = _STARTUPINFO() |
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320 | 320 | si.cb = ctypes.sizeof(_STARTUPINFO) |
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321 | 321 | si.dwFlags = _STARTF_USESHOWWINDOW |
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322 | 322 | si.wShowWindow = _SW_HIDE |
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323 | 323 | |
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324 | 324 | pi = _PROCESS_INFORMATION() |
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325 | 325 | |
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326 | 326 | env = '' |
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327 | 327 | for k in os.environ: |
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328 | 328 | env += "%s=%s\0" % (k, os.environ[k]) |
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329 | 329 | if not env: |
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330 | 330 | env = '\0' |
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331 | 331 | env += '\0' |
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332 | 332 | |
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333 | 333 | args = subprocess.list2cmdline(args) |
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334 | 334 | # Not running the command in shell mode makes python26 hang when |
|
335 | 335 | # writing to hgweb output socket. |
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336 | 336 | comspec = os.environ.get("COMSPEC", "cmd.exe") |
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337 | 337 | args = comspec + " /c " + args |
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338 | 338 | |
|
339 | 339 | res = _kernel32.CreateProcessA( |
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340 | 340 | None, args, None, None, False, _DETACHED_PROCESS, |
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341 | 341 | env, os.getcwd(), ctypes.byref(si), ctypes.byref(pi)) |
|
342 | 342 | if not res: |
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343 | 343 | raise ctypes.WinError |
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344 | 344 | |
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345 | 345 | return pi.dwProcessId |
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346 | 346 | |
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347 | 347 | def unlink(f): |
|
348 | 348 | '''try to implement POSIX' unlink semantics on Windows''' |
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349 | 349 | |
|
350 | 350 | # POSIX allows to unlink and rename open files. Windows has serious |
|
351 | 351 | # problems with doing that: |
|
352 | 352 | # - Calling os.unlink (or os.rename) on a file f fails if f or any |
|
353 | 353 | # hardlinked copy of f has been opened with Python's open(). There is no |
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354 | 354 | # way such a file can be deleted or renamed on Windows (other than |
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355 | 355 | # scheduling the delete or rename for the next reboot). |
|
356 | 356 | # - Calling os.unlink on a file that has been opened with Mercurial's |
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357 | 357 | # posixfile (or comparable methods) will delay the actual deletion of |
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358 | 358 | # the file for as long as the file is held open. The filename is blocked |
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359 | 359 | # during that time and cannot be used for recreating a new file under |
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360 | 360 | # that same name ("zombie file"). Directories containing such zombie files |
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361 | 361 | # cannot be removed or moved. |
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362 | 362 | # A file that has been opened with posixfile can be renamed, so we rename |
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363 | 363 | # f to a random temporary name before calling os.unlink on it. This allows |
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364 | 364 | # callers to recreate f immediately while having other readers do their |
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365 | 365 | # implicit zombie filename blocking on a temporary name. |
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366 | 366 | |
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367 | 367 | for tries in xrange(10): |
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368 | 368 | temp = '%s-%08x' % (f, random.randint(0, 0xffffffff)) |
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369 | 369 | try: |
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370 | 370 | os.rename(f, temp) # raises OSError EEXIST if temp exists |
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371 | 371 | break |
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372 | 372 | except OSError, e: |
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373 | 373 | if e.errno != errno.EEXIST: |
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374 | 374 | raise |
|
375 | 375 | else: |
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376 | 376 | raise IOError, (errno.EEXIST, "No usable temporary filename found") |
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377 | 377 | |
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378 | 378 | try: |
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379 | 379 | os.unlink(temp) |
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380 | 380 | except OSError: |
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381 | 381 | # The unlink might have failed because the READONLY attribute may heave |
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382 | 382 | # been set on the original file. Rename works fine with READONLY set, |
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383 | 383 | # but not os.unlink. Reset all attributes and try again. |
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384 | 384 | _kernel32.SetFileAttributesA(temp, _FILE_ATTRIBUTE_NORMAL) |
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385 | 385 | try: |
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386 | 386 | os.unlink(temp) |
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387 | 387 | except OSError: |
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388 | 388 | # The unlink might have failed due to some very rude AV-Scanners. |
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389 | 389 | # Leaking a tempfile is the lesser evil than aborting here and |
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390 | 390 | # leaving some potentially serious inconsistencies. |
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391 | 391 | pass |
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392 | 392 | |
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393 | 393 | def makedir(path, notindexed): |
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394 | 394 | os.mkdir(path) |
|
395 | 395 | if notindexed: |
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396 | 396 | _kernel32.SetFileAttributesA(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED) |
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