OpenSlides/extras/win32-portable/openslides.c

131 lines
2.4 KiB
C

/*
:copyright: 2012 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#define _WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <Python.h>
static const char *site_code =
"import sys;"
"import os;"
"import site;"
"path = os.path.dirname(sys.executable);"
"site_dir = os.path.join(path, \"site-packages\");"
"site.addsitedir(site_dir);"
"sys.path.append(path)";
static const char *run_openslides_code =
"import openslides.main;"
"openslides.main.win32_portable_main()";
/* determine the path to the executable
* NOTE: Py_GetFullProgramPath() can't be used because
* this would trigger pythons search-path initialization
* But we need this to initialize PYTHONHOME before this happens
*/
static char *
_get_module_name()
{
size_t size = 1;
char *name = NULL;
int i;
/* a path > 40k would be insane, it is more likely something
* else has gone very wrong on the system
*/
for (i = 0;i < 10; i++)
{
DWORD res;
char *n;
n = realloc(name, size);
if (!n)
{
free(name);
return NULL;
}
name = n;
res = GetModuleFileNameA(NULL, name, size);
if (res != 0 && res < size)
{
return name;
}
else if (res == size)
{
/* NOTE: Don't check GetLastError() == ERROR_INSUFFICIENT_BUFFER
* here, it isn't set consisntently across all platforms
*/
size += 4096;
}
else
{
DWORD err = GetLastError();
fprintf(stderr, "WARNING: GetModuleFileName() failed "
"(res = %d, err = %d)", res, err);
free(name);
return NULL;
}
}
return NULL;
}
static int
_run()
{
if (PyRun_SimpleString(site_code) != 0)
{
fprintf(stderr, "ERROR: failed to initialize site path\n");
return 1;
}
if (PyRun_SimpleString(run_openslides_code) != 0)
{
fprintf(stderr, "ERROR: failed to execute openslides\n");
return 1;
}
return 0;
}
int
main(int argc, char *argv[])
{
int returncode;
char *py_home, *sep = NULL;
Py_SetProgramName(argv[0]);
py_home = _get_module_name();
if (py_home)
sep = strrchr(py_home, '\\');
/* should always be the true */
if (sep)
{
*sep = '\0';
Py_SetPythonHome(py_home);
}
Py_Initialize();
PySys_SetArgvEx(argc, argv, 0);
returncode = _run();
Py_Finalize();
free(py_home);
return returncode;
}