Avoid conflicts of embedded vfs with Qt.

Author: Maxwell175

Include/np_embed.h

@@ -8,6 +8,10 @@
 
 #ifndef __ASSEMBLER__
 #ifdef __cplusplus
+#if __has_include (<QtCore>)
+#  include <QtCore>
+#endif
+
 extern "C" {
 #endif
 
@@ -129,13 +133,76 @@ NP_DECL(void) np_flockfile(void *e);
 NP_DECL(void) np_funlockfile(void *e);
 NP_DECL(int) np_ftrylockfile(void *e);
 
-#if !defined(NUITKAPYTHON_EMBED_BUILD) && !defined(__cplusplus)
+#ifndef NUITKAPYTHON_EMBED_BUILD
+
+/* Using a bunch of macros from
+ * https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,-tips,-and-idioms
+ */
+
+#define CAT(a, ...) PRIMITIVE_CAT(a, __VA_ARGS__)
+#define PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
+
+#define IIF(c) PRIMITIVE_CAT(IIF_, c)
+#define IIF_0(t, ...) __VA_ARGS__
+#define IIF_1(t, ...) t
+
+#define COMPL(b) PRIMITIVE_CAT(COMPL_, b)
+#define COMPL_0 1
+#define COMPL_1 0
+
+#define DEC(x) PRIMITIVE_CAT(DEC_, x)
+#define DEC_0 0
+#define DEC_1 0
+#define DEC_2 1
+#define DEC_3 2
+#define DEC_4 3
+#define DEC_5 4
+#define DEC_6 5
+#define DEC_7 6
+#define DEC_8 7
+#define DEC_9 8
+#define DEC_10 9
+#define DEC_11 10
+#define DEC_12 11
+#define DEC_13 12
+#define DEC_14 13
+#define DEC_15 14
+#define DEC_16 15
+#define DEC_17 16
+#define DEC_18 17
+#define DEC_19 18
+#define DEC_20 19
+
+#define CHECK_N(x, n, ...) n
+#define CHECK(...) CHECK_N(__VA_ARGS__, 0,)
+#define PROBE(x) x, 1,
+
+#define IS_PAREN(x) CHECK(IS_PAREN_PROBE x)
+#define IS_PAREN_PROBE(...) PROBE(~)
+
+#define NOT(x) CHECK(PRIMITIVE_CAT(NOT_, x))
+#define NOT_0 PROBE(~)
+
+#define BOOL(x) COMPL(NOT(x))
+#define IF(c) IIF(BOOL(c))
+
+#define EAT(...)
+#define EXPAND(...) __VA_ARGS__
+#define WHEN(c) IF(c)(EXPAND, EAT)
+
+#define EXPAND(...) __VA_ARGS__
+
+#define NUM_ARGS1(_20,_19,_18,_17,_16,_15,_14,_13,_12,_11,_10,_9,_8,_7,_6,_5,_4,_3,_2,_1, n, ...) n
+#define NUM_ARGS0(...) NUM_ARGS1(__VA_ARGS__,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)
+#define NUM_ARGS(...) IF(DEC(NUM_ARGS0(__VA_ARGS__)))(NUM_ARGS0(__VA_ARGS__),IF(IS_PAREN(__VA_ARGS__ ()))(0,1))
+
 // Preprocessor Translation
 #define FILE EFILE
 /* File Opening and Closing */
 #define fopen np_fopen
 #define _fopen np_fopen
-#define open np_open
+// Basically this very complicated macro overrides only calls to open() functions that have 2 or more arguments to avoid compatibility issues.
+#define open(...) WHEN(DEC(NUM_ARGS( __VA_ARGS__ )))(np_open(__VA_ARGS__))WHEN(NOT(DEC(NUM_ARGS( __VA_ARGS__ ))))(open(__VA_ARGS__))
 #define _open np_open
 #define fdopen np_fdopen
 #define _fdopen np_fdopen