pythongh-133711: Log Windows OEM code page in test.pythoninfo (python#134840)

Add _winapi.GetOEMCP() function.

Author: vstinner

Lib/test/pythoninfo.py

@@ -920,10 +920,17 @@ def collect_windows(info_add):
 
     try:
         import _winapi
-        dll_path = _winapi.GetModuleFileName(sys.dllhandle)
-        info_add('windows.dll_path', dll_path)
-    except (ImportError, AttributeError):
+    except ImportError:
         pass
+    else:
+        try:
+            dll_path = _winapi.GetModuleFileName(sys.dllhandle)
+            info_add('windows.dll_path', dll_path)
+        except AttributeError:
+            pass
+
+        call_func(info_add, 'windows.ansi_code_page', _winapi, 'GetACP')
+        call_func(info_add, 'windows.oem_code_page', _winapi, 'GetOEMCP')
 
     # windows.version_caption: "wmic os get Caption,Version /value" command
     import subprocess

Modules/_winapi.c

@@ -2747,6 +2747,19 @@ _winapi_GetACP_impl(PyObject *module)
     return PyLong_FromUnsignedLong(GetACP());
 }
 
+/*[clinic input]
+_winapi.GetOEMCP
+
+Get the current Windows ANSI code page identifier.
+[clinic start generated code]*/
+
+static PyObject *
+_winapi_GetOEMCP_impl(PyObject *module)
+/*[clinic end generated code: output=4def5b07a8be1b3b input=e8caf4353a28e28e]*/
+{
+    return PyLong_FromUnsignedLong(GetOEMCP());
+}
+
 /*[clinic input]
 _winapi.GetFileType -> DWORD
 
@@ -3007,6 +3020,7 @@ static PyMethodDef winapi_functions[] = {
     _WINAPI_WAITFORSINGLEOBJECT_METHODDEF
     _WINAPI_WRITEFILE_METHODDEF
     _WINAPI_GETACP_METHODDEF
+    _WINAPI_GETOEMCP_METHODDEF
     _WINAPI_GETFILETYPE_METHODDEF
     _WINAPI__MIMETYPES_READ_WINDOWS_REGISTRY_METHODDEF
     _WINAPI_NEEDCURRENTDIRECTORYFOREXEPATH_METHODDEF