cosmopolitan/third_party/python/Python/pythonhome.c

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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi
Python 3
https://docs.python.org/3/license.html │
*/
#include "libc/str/str.h"
#include "third_party/python/Include/osdefs.h"
#include "third_party/python/Include/pydebug.h"
#include "third_party/python/Include/pylifecycle.h"
#include "third_party/python/Include/pymacro.h"
/* clang-format off */
static wchar_t *default_home = NULL;
static wchar_t env_home[MAXPATHLEN+1];
void
Py_SetPythonHome(wchar_t *home)
{
default_home = home;
}
wchar_t *
Py_GetPythonHome(void)
{
wchar_t *home = default_home;
if (home == NULL && !Py_IgnoreEnvironmentFlag) {
char* chome = Py_GETENV("PYTHONHOME");
if (chome) {
size_t size = Py_ARRAY_LENGTH(env_home);
size_t r = mbstowcs(env_home, chome, size);
if (r != (size_t)-1 && r < size)
home = env_home;
}
}
return home;
}