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cpython/PC/python_uwp.cpp at startup_debug · native-api/cpython · GitHub
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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
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