author | Pierre-Yves David <pierre-yves.david@octobus.net> |
Tue, 06 Apr 2021 10:38:27 +0200 | |
changeset 46897 | 1c52d77d7861 |
parent 40976 | ef7119cd4965 |
child 47315 | 825d5a5907b4 |
permissions | -rw-r--r-- |
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/* |
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exewrapper.c - wrapper for calling a python script on Windows |
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|
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Copyright 2012 Adrian Buehlmann <adrian@cadifra.com> and others |
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|
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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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*/ |
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9 |
|
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#include <Python.h> |
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#include <stdio.h> |
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#include <tchar.h> |
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#include <windows.h> |
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|
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#include "hgpythonlib.h" |
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|
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17 |
#ifdef __GNUC__ |
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18 |
int strcat_s(char *d, size_t n, const char *s) |
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{ |
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return !strncat(d, s, n); |
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} |
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int strcpy_s(char *d, size_t n, const char *s) |
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{ |
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return !strncpy(d, s, n); |
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} |
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|
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27 |
#define _tcscpy_s strcpy_s |
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#define _tcscat_s strcat_s |
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#define _countof(array) (sizeof(array) / sizeof(array[0])) |
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#endif |
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31 |
|
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static TCHAR pyscript[MAX_PATH + 10]; |
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static TCHAR pyhome[MAX_PATH + 10]; |
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static TCHAR pydllfile[MAX_PATH + 10]; |
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35 |
|
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int _tmain(int argc, TCHAR *argv[]) |
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37 |
{ |
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TCHAR *p; |
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int ret; |
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40 |
int i; |
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41 |
int n; |
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42 |
TCHAR **pyargv; |
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WIN32_FIND_DATA fdata; |
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HANDLE hfind; |
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const char *err; |
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HMODULE pydll; |
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void(__cdecl * Py_SetPythonHome)(TCHAR * home); |
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int(__cdecl * Py_Main)(int argc, TCHAR *argv[]); |
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49 |
|
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50 |
#if PY_MAJOR_VERSION >= 3 |
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Py_LegacyWindowsStdioFlag = 1; |
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52 |
#endif |
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53 |
|
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54 |
if (GetModuleFileName(NULL, pyscript, _countof(pyscript)) == 0) { |
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55 |
err = "GetModuleFileName failed"; |
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56 |
goto bail; |
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57 |
} |
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58 |
|
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59 |
p = _tcsrchr(pyscript, '.'); |
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60 |
if (p == NULL) { |
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61 |
err = "malformed module filename"; |
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62 |
goto bail; |
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63 |
} |
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64 |
*p = 0; /* cut trailing ".exe" */ |
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65 |
_tcscpy_s(pyhome, _countof(pyhome), pyscript); |
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66 |
|
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67 |
hfind = FindFirstFile(pyscript, &fdata); |
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68 |
if (hfind != INVALID_HANDLE_VALUE) { |
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69 |
/* pyscript exists, close handle */ |
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70 |
FindClose(hfind); |
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71 |
} else { |
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72 |
/* file pyscript isn't there, take <pyscript>exe.py */ |
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73 |
_tcscat_s(pyscript, _countof(pyscript), _T("exe.py")); |
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74 |
} |
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75 |
|
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76 |
pydll = NULL; |
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77 |
|
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78 |
p = _tcsrchr(pyhome, _T('\\')); |
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79 |
if (p == NULL) { |
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80 |
err = "can't find backslash in module filename"; |
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81 |
goto bail; |
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82 |
} |
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83 |
*p = 0; /* cut at directory */ |
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84 |
|
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85 |
/* check for private Python of HackableMercurial */ |
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86 |
_tcscat_s(pyhome, _countof(pyhome), _T("\\hg-python")); |
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87 |
|
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88 |
hfind = FindFirstFile(pyhome, &fdata); |
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89 |
if (hfind != INVALID_HANDLE_VALUE) { |
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90 |
/* Path .\hg-python exists. We are probably in HackableMercurial |
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91 |
scenario, so let's load python dll from this dir. */ |
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92 |
FindClose(hfind); |
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93 |
_tcscpy_s(pydllfile, _countof(pydllfile), pyhome); |
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|
94 |
_tcscat_s(pydllfile, _countof(pydllfile), |
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|
95 |
_T("\\") _T(HGPYTHONLIB) _T(".dll")); |
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|
96 |
pydll = LoadLibrary(pydllfile); |
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Kostia Balytskyi <ikostia@fb.com>
parents:
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|
97 |
if (pydll == NULL) { |
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Yuya Nishihara <yuya@tcha.org>
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|
98 |
err = "failed to load private Python DLL " HGPYTHONLIB |
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|
99 |
".dll"; |
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100 |
goto bail; |
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|
101 |
} |
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Augie Fackler <augie@google.com>
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|
102 |
Py_SetPythonHome = |
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Augie Fackler <augie@google.com>
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103 |
(void *)GetProcAddress(pydll, "Py_SetPythonHome"); |
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Kostia Balytskyi <ikostia@fb.com>
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|
104 |
if (Py_SetPythonHome == NULL) { |
0241dd94ed38
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Kostia Balytskyi <ikostia@fb.com>
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|
105 |
err = "failed to get Py_SetPythonHome"; |
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Kostia Balytskyi <ikostia@fb.com>
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|
106 |
goto bail; |
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Adrian Buehlmann <adrian@cadifra.com>
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|
107 |
} |
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0241dd94ed38
exewrapper: prefer HackableMercurial python if availbale
Kostia Balytskyi <ikostia@fb.com>
parents:
29019
diff
changeset
|
108 |
Py_SetPythonHome(pyhome); |
17732
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
109 |
} |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
110 |
|
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
111 |
if (pydll == NULL) { |
40396
973ff03d9bc0
exewrapper: convert to _tcsxxx functions for Unicode compatability
Matt Harbison <matt_harbison@yahoo.com>
parents:
40395
diff
changeset
|
112 |
pydll = LoadLibrary(_T(HGPYTHONLIB) _T(".dll")); |
17732
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
113 |
if (pydll == NULL) { |
26662
d215def59c3b
exewrapper: report name of failed DLL in error message
Adrian Buehlmann <adrian@cadifra.com>
parents:
17732
diff
changeset
|
114 |
err = "failed to load Python DLL " HGPYTHONLIB ".dll"; |
17732
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
115 |
goto bail; |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
116 |
} |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
117 |
} |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
118 |
|
34636
31c6c4d27be7
exewrapper: format with clang-format
Augie Fackler <augie@google.com>
parents:
31443
diff
changeset
|
119 |
Py_Main = (void *)GetProcAddress(pydll, "Py_Main"); |
17732
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
120 |
if (Py_Main == NULL) { |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
121 |
err = "failed to get Py_Main"; |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
122 |
goto bail; |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
123 |
} |
93d97a212559
exewrapper: adapt for legacy HackableMercurial
Adrian Buehlmann <adrian@cadifra.com>
parents:
17063
diff
changeset
|
124 |
|
17058
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
125 |
/* |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
126 |
Only add the pyscript to the args, if it's not already there. It may |
17063
3fbc6e3abdbd
exewrapper: use generic term script
Adrian Buehlmann <adrian@cadifra.com>
parents:
17058
diff
changeset
|
127 |
already be there, if the script spawned a child process of itself, in |
17058
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
128 |
the same way as it got called, that is, with the pyscript already in |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
129 |
place. So we optionally accept the pyscript as the first argument |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
130 |
(argv[1]), letting our exe taking the role of the python interpreter. |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
131 |
*/ |
40396
973ff03d9bc0
exewrapper: convert to _tcsxxx functions for Unicode compatability
Matt Harbison <matt_harbison@yahoo.com>
parents:
40395
diff
changeset
|
132 |
if (argc >= 2 && _tcscmp(argv[1], pyscript) == 0) { |
17058
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
133 |
/* |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
134 |
pyscript is already in the args, so there is no need to copy |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
135 |
the args and we can directly call the python interpreter with |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
136 |
the original args. |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
137 |
*/ |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
138 |
return Py_Main(argc, argv); |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
139 |
} |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
140 |
|
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
141 |
/* |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
142 |
Start assembling the args for the Python interpreter call. We put the |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
143 |
name of our exe (argv[0]) in the position where the python.exe |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
144 |
canonically is, and insert the pyscript next. |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
145 |
*/ |
40396
973ff03d9bc0
exewrapper: convert to _tcsxxx functions for Unicode compatability
Matt Harbison <matt_harbison@yahoo.com>
parents:
40395
diff
changeset
|
146 |
pyargv = malloc((argc + 5) * sizeof(TCHAR *)); |
17058
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
147 |
if (pyargv == NULL) { |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
148 |
err = "not enough memory"; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
149 |
goto bail; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
150 |
} |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
151 |
n = 0; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
152 |
pyargv[n++] = argv[0]; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
153 |
pyargv[n++] = pyscript; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
154 |
|
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
155 |
/* copy remaining args from the command line */ |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
156 |
for (i = 1; i < argc; i++) |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
157 |
pyargv[n++] = argv[i]; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
158 |
/* argv[argc] is guaranteed to be NULL, so we forward that guarantee */ |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
159 |
pyargv[n] = NULL; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
160 |
|
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
161 |
ret = Py_Main(n, pyargv); /* The Python interpreter call */ |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
162 |
|
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
163 |
free(pyargv); |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
164 |
return ret; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
165 |
|
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
166 |
bail: |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
167 |
fprintf(stderr, "abort: %s\n", err); |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
168 |
return 255; |
d5422faf648c
exewrapper: adding new exewrapper.c
Adrian Buehlmann <adrian@cadifra.com>
parents:
diff
changeset
|
169 |
} |