Add getcodepage() which returns the codepage associated with font zero.

src/conio/ciolib.c

@@ -139,6 +139,7 @@ CIOLIBEXPORT void CIOLIBCALL ciolib_set_vmem(struct vmem_cell *cell, uint8_t ch,
 CIOLIBEXPORT void CIOLIBCALL ciolib_set_vmem_attr(struct vmem_cell *cell, uint8_t attr);
 CIOLIBEXPORT void CIOLIBCALL ciolib_setwinsize(int width, int height);
 CIOLIBEXPORT void CIOLIBCALL ciolib_setwinposition(int x, int y);
+CIOLIBEXPORT enum ciolib_codepage CIOLIBCALL ciolib_getcodepage(void);
 
 #if defined(WITH_SDL) || defined(WITH_SDL_AUDIO)
 int sdl_video_initialized = 0;
@@ -1868,3 +1869,14 @@ CIOLIBEXPORT void CIOLIBCALL ciolib_setwinposition(int x, int y)
 	if(cio_api.setwinposition)
 		cio_api.setwinposition(x, y);
 }
+
+CIOLIBEXPORT enum ciolib_codepage CIOLIBCALL ciolib_getcodepage(void)
+{
+	int font = ciolib_getfont(0);
+
+	if (font < 0)
+		return CIOLIB_CP437;
+	if (font >= sizeof(conio_fontdata) / sizeof(conio_fontdata[0]))
+		return CIOLIB_CP437;
+	return conio_fontdata[font].cp;
+}

src/conio/ciolib.h

@@ -457,6 +457,7 @@ CIOLIBEXPORT void CIOLIBCALL ciolib_set_vmem(struct vmem_cell *cell, uint8_t ch,
 CIOLIBEXPORT void CIOLIBCALL ciolib_set_vmem_attr(struct vmem_cell *cell, uint8_t attr);
 CIOLIBEXPORT void CIOLIBCALL ciolib_setwinsize(int width, int height);
 CIOLIBEXPORT void CIOLIBCALL ciolib_setwinposition(int x, int y);
+CIOLIBEXPORT enum ciolib_codepage CIOLIBCALL ciolib_getcodepage(void);
 
 /* DoorWay specific stuff that's only applicable to ANSI mode. */
 CIOLIBEXPORT void CIOLIBCALL ansi_ciolib_setdoorway(int enable);
@@ -540,6 +541,7 @@ CIOLIBEXPORT void CIOLIBCALL ansi_ciolib_setdoorway(int enable);
 	#define set_vmem_attr(a, b)		ciolib_set_vmem_attr(a, b)
 	#define setwinsize(a,b)			ciolib_setwinsize(a,b)
 	#define setwinposition(a,b)		ciolib_setwinposition(a,b)
+	#define getcodepage()			ciolib_getcodepage()
 #endif
 
 #ifdef WITH_SDL