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cpython/PC/python_uwp.cpp at fix-enum-docs · sobolevn/cpython · GitHub
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python_uwp.cpp
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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
<
shlobj.h
>
#
include
<
string
>
#
include
<
appmodel.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
std::wstring
get_package_family
()
{
try
{
UINT32
nameLength =
MAX_PATH
;
std::wstring name;
name.
resize
(nameLength);
DWORD
rc =
GetCurrentPackageFamilyName
(&nameLength, name.
data
());
if
(rc ==
ERROR_SUCCESS
) {
name.
resize
(nameLength -
1
);
return
name;
}
else
if
(rc !=
ERROR_INSUFFICIENT_BUFFER
) {
throw
rc;
}
name.
resize
(nameLength);
rc =
GetCurrentPackageFamilyName
(&nameLength, name.
data
());
if
(rc !=
ERROR_SUCCESS
) {
throw
rc;
}
name.
resize
(nameLength -
1
);
return
name;
}
catch
(...) {
}
return
std::wstring
();
}
static
std::wstring
get_user_base
()
{
try
{
const
auto
appData =
winrt::Windows::Storage::ApplicationData::Current
();
if
(appData) {
const
auto
localCache = appData.
LocalCacheFolder
();
if
(localCache) {
std::wstring path { localCache.
Path
().
c_str
() };
if
(!path.
empty
()) {
return
path +
L"
\\
local-packages
"
;
}
}
}
}
catch
(...) {
}
return
std::wstring
();
}
static
std::wstring
get_package_home
()
{
try
{
UINT32
pathLength =
MAX_PATH
;
std::wstring path;
path.
resize
(pathLength);
DWORD
rc =
GetCurrentPackagePath
(&pathLength, path.
data
());
if
(rc ==
ERROR_SUCCESS
) {
path.
resize
(pathLength -
1
);
return
path;
}
else
if
(rc !=
ERROR_INSUFFICIENT_BUFFER
) {
throw
rc;
}
path.
resize
(pathLength);
rc =
GetCurrentPackagePath
(&pathLength, path.
data
());
if
(rc !=
ERROR_SUCCESS
) {
throw
rc;
}
path.
resize
(pathLength -
1
);
return
path;
}
catch
(...) {
}
return
std::wstring
();
}
static
PyStatus
set_process_name
(PyConfig *config)
{
PyStatus status =
PyStatus_Ok
();
std::wstring executable;
const
auto
home =
get_package_home
();
const
auto
family =
get_package_family
();
if
(!family.
empty
()) {
PWSTR
localAppData;
if
(
SUCCEEDED
(
SHGetKnownFolderPath
(FOLDERID_LocalAppData,
0
,
NULL
, &localAppData))) {
executable =
std::wstring
(localAppData)
+
L"
\\
Microsoft
\\
WindowsApps
\\
"
+ family
+
L"
\\
"
+
PROGNAME
;
CoTaskMemFree
(localAppData);
}
}
/*
Only use module filename if we don't have a home
*/
if
(home.
empty
() && executable.
empty
()) {
executable.
resize
(
MAX_PATH
);
while
(
true
) {
DWORD
len =
GetModuleFileNameW
(
NULL
, executable.
data
(), (
DWORD
)executable.
size
());
if
(len ==
0
) {
executable.
clear
();
break
;
}
else
if
(len == executable.
size
() &&
GetLastError
() ==
ERROR_INSUFFICIENT_BUFFER
) {
executable.
resize
(len *
2
);
}
else
{
executable.
resize
(len);
break
;
}
}
size_t
i = executable.
find_last_of
(
L"
/
\\
"
);
if
(i == std::wstring::npos) {
executable =
PROGNAME
;
}
else
{
executable.
replace
(i +
1
, std::wstring::npos,
PROGNAME
);
}
}
if
(!home.
empty
()) {
status =
PyConfig_SetString
(config, &config->
home
, home.
c_str
());
if
(
PyStatus_Exception
(status)) {
return
status;
}
}
const
wchar_t
*launcherPath =
_wgetenv
(
L"
__PYVENV_LAUNCHER__
"
);
if
(launcherPath) {
if
(!executable.
empty
()) {
status =
PyConfig_SetString
(config, &config->
base_executable
,
executable.
c_str
());
if
(
PyStatus_Exception
(status)) {
return
status;
}
}
status =
PyConfig_SetString
(
config, &config->
executable
, launcherPath);
/*
bpo-35873: Clear the environment variable to avoid it being
* inherited by child processes.
*/
_wputenv_s
(
L"
__PYVENV_LAUNCHER__
"
,
L"
"
);
}
else
if
(!executable.
empty
()) {
status =
PyConfig_SetString
(
config, &config->
executable
, executable.
c_str
());
}
return
status;
}
int
wmain
(
int
argc,
wchar_t
**argv)
{
PyStatus status;
PyPreConfig preconfig;
PyConfig config;
const
wchar_t
*moduleName =
NULL
;
const
wchar_t
*p =
wcsrchr
(argv[
0
], L
'
\\
'
);
if
(!p) {
p = argv[
0
];
}
if
(p) {
if
(*p == L
'
\\
'
) {
p++;
}
if
(
wcsnicmp
(p,
L"
pip
"
,
3
) ==
0
) {
moduleName =
L"
pip
"
;
}
else
if
(
wcsnicmp
(p,
L"
idle
"
,
4
) ==
0
) {
moduleName =
L"
idlelib
"
;
}
}
PyPreConfig_InitPythonConfig
(&preconfig);
if
(!moduleName) {
status =
Py_PreInitializeFromArgs
(&preconfig, argc, argv);
if
(
PyStatus_Exception
(status)) {
goto
fail_without_config;
}
}
PyConfig_InitPythonConfig
(&config);
status =
PyConfig_SetArgv
(&config, argc, argv);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
if
(moduleName) {
config.
parse_argv
=
0
;
}
status =
set_process_name
(&config);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
p =
_wgetenv
(
L"
PYTHONUSERBASE
"
);
if
(!p || !*p) {
_wputenv_s
(
L"
PYTHONUSERBASE
"
,
get_user_base
().
c_str
());
}
if
(moduleName) {
status =
PyConfig_SetString
(&config, &config.
run_module
, moduleName);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
status =
PyConfig_SetString
(&config, &config.
run_filename
,
NULL
);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
status =
PyConfig_SetString
(&config, &config.
run_command
,
NULL
);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
}
status =
Py_InitializeFromConfig
(&config);
if
(
PyStatus_Exception
(status)) {
goto
fail;
}
PyConfig_Clear
(&config);
return
Py_RunMain
();
fail:
PyConfig_Clear
(&config);
fail_without_config:
if
(
PyStatus_IsExit
(status)) {
return
status.
exitcode
;
}
assert
(
PyStatus_Exception
(status));
Py_ExitStatusException
(status);
/*
Unreachable code
*/
return
0
;
}
#
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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