annotate mercurial/exewrapper.c @ 39583:ee1e74ee037c

formatter: fill missing resources by formatter, not by resource mapper While working on demand loading of ctx/fctx objects, I found it's weird to support lookup in both directions. For instance, fctx can be loaded from (ctx, path) pair, but ctx may also be derived from fctx.changectx() in the original mapping. If the original mapping has had fctx but no ctx, and if the new mapping provides {path}, we can't be sure if fctx should be updated by fctx'.changectx()[path] or not. This patch simply drops the support for the resolution in fctx -> ctx -> repo direction.
author Yuya Nishihara <yuya@tcha.org>
date Sat, 01 Sep 2018 13:21:45 +0900
parents 31c6c4d27be7
children aca727359ec5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 static char pyscript[MAX_PATH + 10];
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27 static char pyhome[MAX_PATH + 10];
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28 static char envpyhome[MAX_PATH + 10];
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29 static char pydllfile[MAX_PATH + 10];
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30
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31 int main(int argc, char *argv[])
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32 {
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33 char *p;
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34 int ret;
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35 int i;
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36 int n;
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37 char **pyargv;
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38 WIN32_FIND_DATA fdata;
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39 HANDLE hfind;
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40 const char *err;
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41 HMODULE pydll;
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42 void(__cdecl * Py_SetPythonHome)(char *home);
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43 int(__cdecl * Py_Main)(int argc, char *argv[]);
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44
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45 if (GetModuleFileName(NULL, pyscript, sizeof(pyscript)) == 0) {
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46 err = "GetModuleFileName failed";
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47 goto bail;
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48 }
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49
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50 p = strrchr(pyscript, '.');
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51 if (p == NULL) {
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52 err = "malformed module filename";
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53 goto bail;
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54 }
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55 *p = 0; /* cut trailing ".exe" */
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56 strcpy_s(pyhome, sizeof(pyhome), pyscript);
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57
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58 hfind = FindFirstFile(pyscript, &fdata);
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59 if (hfind != INVALID_HANDLE_VALUE) {
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60 /* pyscript exists, close handle */
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61 FindClose(hfind);
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62 } else {
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63 /* file pyscript isn't there, take <pyscript>exe.py */
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64 strcat_s(pyscript, sizeof(pyscript), "exe.py");
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65 }
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66
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67 pydll = NULL;
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68
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69 p = strrchr(pyhome, '\\');
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70 if (p == NULL) {
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71 err = "can't find backslash in module filename";
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72 goto bail;
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73 }
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74 *p = 0; /* cut at directory */
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75
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76 /* check for private Python of HackableMercurial */
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77 strcat_s(pyhome, sizeof(pyhome), "\\hg-python");
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78
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79 hfind = FindFirstFile(pyhome, &fdata);
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80 if (hfind != INVALID_HANDLE_VALUE) {
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81 /* Path .\hg-python exists. We are probably in HackableMercurial
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82 scenario, so let's load python dll from this dir. */
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83 FindClose(hfind);
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84 strcpy_s(pydllfile, sizeof(pydllfile), pyhome);
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85 strcat_s(pydllfile, sizeof(pydllfile), "\\" HGPYTHONLIB ".dll");
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86 pydll = LoadLibrary(pydllfile);
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87 if (pydll == NULL) {
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88 err = "failed to load private Python DLL " HGPYTHONLIB
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89 ".dll";
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90 goto bail;
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91 }
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92 Py_SetPythonHome =
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93 (void *)GetProcAddress(pydll, "Py_SetPythonHome");
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94 if (Py_SetPythonHome == NULL) {
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95 err = "failed to get Py_SetPythonHome";
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96 goto bail;
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97 }
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98 Py_SetPythonHome(pyhome);
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99 }
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100
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101 if (pydll == NULL) {
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102 pydll = LoadLibrary(HGPYTHONLIB ".dll");
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103 if (pydll == NULL) {
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104 err = "failed to load Python DLL " HGPYTHONLIB ".dll";
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105 goto bail;
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106 }
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107 }
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108
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109 Py_Main = (void *)GetProcAddress(pydll, "Py_Main");
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110 if (Py_Main == NULL) {
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111 err = "failed to get Py_Main";
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112 goto bail;
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113 }
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114
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115 /*
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116 Only add the pyscript to the args, if it's not already there. It may
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117 already be there, if the script spawned a child process of itself, in
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118 the same way as it got called, that is, with the pyscript already in
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119 place. So we optionally accept the pyscript as the first argument
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120 (argv[1]), letting our exe taking the role of the python interpreter.
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121 */
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122 if (argc >= 2 && strcmp(argv[1], pyscript) == 0) {
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123 /*
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124 pyscript is already in the args, so there is no need to copy
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125 the args and we can directly call the python interpreter with
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126 the original args.
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127 */
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128 return Py_Main(argc, argv);
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129 }
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130
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131 /*
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Adrian Buehlmann <adrian@cadifra.com>
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132 Start assembling the args for the Python interpreter call. We put the
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
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133 name of our exe (argv[0]) in the position where the python.exe
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134 canonically is, and insert the pyscript next.
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Adrian Buehlmann <adrian@cadifra.com>
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135 */
34636
31c6c4d27be7 exewrapper: format with clang-format
Augie Fackler <augie@google.com>
parents: 31443
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136 pyargv = malloc((argc + 5) * sizeof(char *));
17058
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137 if (pyargv == NULL) {
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
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138 err = "not enough memory";
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Adrian Buehlmann <adrian@cadifra.com>
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139 goto bail;
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Adrian Buehlmann <adrian@cadifra.com>
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140 }
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Adrian Buehlmann <adrian@cadifra.com>
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141 n = 0;
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Adrian Buehlmann <adrian@cadifra.com>
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142 pyargv[n++] = argv[0];
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143 pyargv[n++] = pyscript;
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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144
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145 /* copy remaining args from the command line */
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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146 for (i = 1; i < argc; i++)
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Adrian Buehlmann <adrian@cadifra.com>
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147 pyargv[n++] = argv[i];
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148 /* argv[argc] is guaranteed to be NULL, so we forward that guarantee */
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parents:
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149 pyargv[n] = NULL;
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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150
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Adrian Buehlmann <adrian@cadifra.com>
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151 ret = Py_Main(n, pyargv); /* The Python interpreter call */
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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152
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
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153 free(pyargv);
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Adrian Buehlmann <adrian@cadifra.com>
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154 return ret;
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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155
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
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156 bail:
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
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157 fprintf(stderr, "abort: %s\n", err);
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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158 return 255;
d5422faf648c exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
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159 }