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python_uwp.cpp
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226 lines (196 loc) · 5.51 KB
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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
#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