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/* Main program when embedded in a UWP application on Windows */

#include "Python.h"

#include <string.h>

#define WIN32_LEAN_AND_MEAN

#include <Windows.h>

#include <shellapi.h>

#include <winrt\Windows.ApplicationModel.h>

#include <winrt\Windows.Storage.h>

#ifdef PYTHONW

#ifdef _DEBUG

const wchar_t *PROGNAME = L"pythonw_d.exe";

#else

const wchar_t *PROGNAME = L"pythonw.exe";

#endif

#else

#ifdef _DEBUG

const wchar_t *PROGNAME = L"python_d.exe";

#else

const wchar_t *PROGNAME = L"python.exe";

#endif

static void

set_user_base()

{

wchar_t envBuffer[2048];

try {

const auto appData = winrt::Windows::Storage::ApplicationData::Current();

if (appData) {

const auto localCache = appData.LocalCacheFolder();

if (localCache) {

auto path = localCache.Path();

if (!path.empty() &&

!wcscpy_s(envBuffer, path.c_str()) &&

!wcscat_s(envBuffer, L"\\local-packages")

) {

_wputenv_s(L"PYTHONUSERBASE", envBuffer);

}

} catch (...) {

}

static const wchar_t *

get_argv0(const wchar_t *argv0)

{

winrt::hstring installPath;

const wchar_t *launcherPath;

wchar_t *buffer;

size_t len;

launcherPath = _wgetenv(L"__PYVENV_LAUNCHER__");

if (launcherPath && launcherPath[0]) {

len = wcslen(launcherPath) + 1;

buffer = (wchar_t *)malloc(sizeof(wchar_t) * len);

if (!buffer) {

Py_FatalError("out of memory");

return NULL;

}

if (wcscpy_s(buffer, len, launcherPath)) {

Py_FatalError("failed to copy to buffer");

return NULL;

}

return buffer;

}

try {

const auto package = winrt::Windows::ApplicationModel::Package::Current();

if (package) {

const auto install = package.InstalledLocation();

if (install) {

installPath = install.Path();

}

catch (...) {

}

if (!installPath.empty()) {

len = installPath.size() + wcslen(PROGNAME) + 2;

} else {

len = wcslen(argv0) + wcslen(PROGNAME) + 1;

}

buffer = (wchar_t *)malloc(sizeof(wchar_t) * len);

if (!buffer) {

Py_FatalError("out of memory");

return NULL;

}

if (!installPath.empty()) {

if (wcscpy_s(buffer, len, installPath.c_str())) {

Py_FatalError("failed to copy to buffer");

return NULL;

}

if (wcscat_s(buffer, len, L"\\")) {

Py_FatalError("failed to concatenate backslash");

return NULL;

}

} else {

if (wcscpy_s(buffer, len, argv0)) {

Py_FatalError("failed to copy argv[0]");

return NULL;

}

wchar_t *name = wcsrchr(buffer, L'\\');

if (name) {

name[1] = L'\0';

} else {

buffer[0] = L'\0';

}

if (wcscat_s(buffer, len, PROGNAME)) {

Py_FatalError("failed to concatenate program name");

return NULL;

}

return buffer;

}

static wchar_t *

get_process_name()

{

DWORD bufferLen = MAX_PATH;

DWORD len = bufferLen;

wchar_t *r = NULL;

while (!r) {

r = (wchar_t *)malloc(bufferLen * sizeof(wchar_t));

if (!r) {

Py_FatalError("out of memory");

return NULL;

}

len = GetModuleFileNameW(NULL, r, bufferLen);

if (len == 0) {

free((void *)r);

return NULL;

} else if (len == bufferLen &&

GetLastError() == ERROR_INSUFFICIENT_BUFFER) {

free(r);

r = NULL;

bufferLen *= 2;

}

return r;

}

int

wmain(int argc, wchar_t **argv)

{

const wchar_t **new_argv;

int new_argc;

const wchar_t *exeName;

new_argc = argc;

new_argv = (const wchar_t**)malloc(sizeof(wchar_t *) * (argc + 2));

if (new_argv == NULL) {

Py_FatalError("out of memory");

return -1;

}

exeName = get_process_name();

new_argv[0] = get_argv0(exeName ? exeName : argv[0]);

for (int i = 1; i < argc; ++i) {

new_argv[i] = argv[i];

}

set_user_base();

if (exeName) {

const wchar_t *p = wcsrchr(exeName, L'\\');

if (p) {

const wchar_t *moduleName = NULL;

if (*p++ == L'\\') {

if (wcsnicmp(p, L"pip", 3) == 0) {

moduleName = L"pip";

_wputenv_s(L"PIP_USER", L"true");

}

else if (wcsnicmp(p, L"idle", 4) == 0) {

moduleName = L"idlelib";

}

if (moduleName) {

new_argc += 2;

for (int i = argc; i >= 1; --i) {

new_argv[i + 2] = new_argv[i];

}

new_argv[1] = L"-m";

new_argv[2] = moduleName;

}

/* Override program_full_path from here so that

sys.executable is set correctly. */

_Py_SetProgramFullPath(new_argv[0]);

int result = Py_Main(new_argc, (wchar_t **)new_argv);

free((void *)exeName);

free((void *)new_argv);

return result;

}

#ifdef PYTHONW

int WINAPI wWinMain(

HINSTANCE hInstance, /* handle to current instance */

HINSTANCE hPrevInstance, /* handle to previous instance */

LPWSTR lpCmdLine, /* pointer to command line */

int nCmdShow /* show state of window */

)

{

return wmain(__argc, __wargv);

}

#endif

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