Mercurial > hg
annotate mercurial/exewrapper.c @ 28501:66513f6ca038
commands: centralize code to update with extra care for non-file components
This patch centralizes similar code paths to update the working
directory with extra care for non-file components (e.g. bookmark) into
newly added function updatetotally().
'if True' at the beginning of updatetotally() is redundant at this
patch, but useful to reduce amount of changes in subsequent patch.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Sat, 12 Mar 2016 04:35:42 +0900 |
parents | 640b807dcce0 |
children | 210bb28ca4fb |
rev | line source |
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1 /* |
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2 exewrapper.c - wrapper for calling a python script on Windows |
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3 |
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4 Copyright 2012 Adrian Buehlmann <adrian@cadifra.com> and others |
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5 |
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6 This software may be used and distributed according to the terms of the |
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7 GNU General Public License version 2 or any later version. |
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8 */ |
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9 |
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10 #include <stdio.h> |
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11 #include <windows.h> |
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12 |
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13 #include "hgpythonlib.h" |
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14 |
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15 #ifdef __GNUC__ |
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16 int strcat_s(char *d, size_t n, const char *s) |
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17 { |
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18 return !strncat(d, s, n); |
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19 } |
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20 int strcpy_s(char *d, size_t n, const char *s) |
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21 { |
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22 return !strncpy(d, s, n); |
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23 } |
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24 #endif |
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25 |
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26 |
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27 static char pyscript[MAX_PATH + 10]; |
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28 static char pyhome[MAX_PATH + 10]; |
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29 static char envpyhome[MAX_PATH + 10]; |
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30 static char pydllfile[MAX_PATH + 10]; |
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31 |
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32 int main(int argc, char *argv[]) |
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33 { |
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34 char *p; |
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35 int ret; |
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36 int i; |
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37 int n; |
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38 char **pyargv; |
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39 WIN32_FIND_DATA fdata; |
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40 HANDLE hfind; |
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41 const char *err; |
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42 HMODULE pydll; |
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43 void (__cdecl *Py_SetPythonHome)(char *home); |
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44 int (__cdecl *Py_Main)(int argc, char *argv[]); |
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45 |
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46 if (GetModuleFileName(NULL, pyscript, sizeof(pyscript)) == 0) |
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47 { |
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48 err = "GetModuleFileName failed"; |
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49 goto bail; |
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50 } |
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51 |
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52 p = strrchr(pyscript, '.'); |
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53 if (p == NULL) { |
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54 err = "malformed module filename"; |
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55 goto bail; |
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56 } |
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57 *p = 0; /* cut trailing ".exe" */ |
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58 strcpy_s(pyhome, sizeof(pyhome), pyscript); |
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59 |
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60 hfind = FindFirstFile(pyscript, &fdata); |
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61 if (hfind != INVALID_HANDLE_VALUE) { |
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62 /* pyscript exists, close handle */ |
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63 FindClose(hfind); |
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64 } else { |
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65 /* file pyscript isn't there, take <pyscript>exe.py */ |
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66 strcat_s(pyscript, sizeof(pyscript), "exe.py"); |
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67 } |
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68 |
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69 pydll = NULL; |
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70 /* |
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71 We first check, that environment variable PYTHONHOME is *not* set. |
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72 This just mimicks the behavior of the regular python.exe, which uses |
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73 PYTHONHOME to find its installation directory (if it has been set). |
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74 Note: Users of HackableMercurial are expected to *not* set PYTHONHOME! |
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75 */ |
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76 if (GetEnvironmentVariable("PYTHONHOME", envpyhome, |
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77 sizeof(envpyhome)) == 0) |
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78 { |
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79 /* |
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80 Environment var PYTHONHOME is *not* set. Let's see if we are |
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81 running inside a HackableMercurial. |
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82 */ |
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83 |
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84 p = strrchr(pyhome, '\\'); |
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85 if (p == NULL) { |
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86 err = "can't find backslash in module filename"; |
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87 goto bail; |
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88 } |
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89 *p = 0; /* cut at directory */ |
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90 |
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91 /* check for private Python of HackableMercurial */ |
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92 strcat_s(pyhome, sizeof(pyhome), "\\hg-python"); |
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93 |
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94 hfind = FindFirstFile(pyhome, &fdata); |
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95 if (hfind != INVALID_HANDLE_VALUE) { |
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96 /* path pyhome exists, let's use it */ |
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97 FindClose(hfind); |
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98 strcpy_s(pydllfile, sizeof(pydllfile), pyhome); |
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99 strcat_s(pydllfile, sizeof(pydllfile), "\\" HGPYTHONLIB); |
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100 pydll = LoadLibrary(pydllfile); |
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101 if (pydll == NULL) { |
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102 err = "failed to load private Python DLL " |
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103 HGPYTHONLIB ".dll"; |
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104 goto bail; |
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105 } |
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106 Py_SetPythonHome = (void*)GetProcAddress(pydll, |
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107 "Py_SetPythonHome"); |
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108 if (Py_SetPythonHome == NULL) { |
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109 err = "failed to get Py_SetPythonHome"; |
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110 goto bail; |
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111 } |
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112 Py_SetPythonHome(pyhome); |
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113 } |
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114 } |
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115 |
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116 if (pydll == NULL) { |
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117 pydll = LoadLibrary(HGPYTHONLIB); |
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118 if (pydll == NULL) { |
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119 err = "failed to load Python DLL " HGPYTHONLIB ".dll"; |
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120 goto bail; |
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121 } |
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122 } |
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123 |
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124 Py_Main = (void*)GetProcAddress(pydll, "Py_Main"); |
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125 if (Py_Main == NULL) { |
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126 err = "failed to get Py_Main"; |
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127 goto bail; |
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128 } |
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129 |
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130 /* |
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131 Only add the pyscript to the args, if it's not already there. It may |
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132 already be there, if the script spawned a child process of itself, in |
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133 the same way as it got called, that is, with the pyscript already in |
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134 place. So we optionally accept the pyscript as the first argument |
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135 (argv[1]), letting our exe taking the role of the python interpreter. |
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136 */ |
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137 if (argc >= 2 && strcmp(argv[1], pyscript) == 0) { |
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138 /* |
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139 pyscript is already in the args, so there is no need to copy |
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140 the args and we can directly call the python interpreter with |
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141 the original args. |
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142 */ |
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143 return Py_Main(argc, argv); |
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144 } |
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145 |
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146 /* |
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147 Start assembling the args for the Python interpreter call. We put the |
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148 name of our exe (argv[0]) in the position where the python.exe |
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149 canonically is, and insert the pyscript next. |
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150 */ |
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151 pyargv = malloc((argc + 5) * sizeof(char*)); |
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152 if (pyargv == NULL) { |
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153 err = "not enough memory"; |
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154 goto bail; |
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155 } |
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156 n = 0; |
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157 pyargv[n++] = argv[0]; |
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158 pyargv[n++] = pyscript; |
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159 |
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160 /* copy remaining args from the command line */ |
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161 for (i = 1; i < argc; i++) |
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162 pyargv[n++] = argv[i]; |
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163 /* argv[argc] is guaranteed to be NULL, so we forward that guarantee */ |
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164 pyargv[n] = NULL; |
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165 |
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166 ret = Py_Main(n, pyargv); /* The Python interpreter call */ |
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167 |
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168 free(pyargv); |
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169 return ret; |
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170 |
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171 bail: |
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172 fprintf(stderr, "abort: %s\n", err); |
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173 return 255; |
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174 } |