Libretro: Add Game Boy cheat support

CHANGES

@@ -99,6 +99,8 @@ Misc:
  - FFmpeg: Support lossless VP9 encoding
  - mGUI: Add fast forward toggle
 Changes from beta 1:
+Features:
+ - Libretro: Add Game Boy cheat support
 Bugfixes:
  - PSP2: Fix audio crackling after fast forward
  - PSP2: Fix audio crackling when buffer is full

src/platform/libretro/libretro.c

@@ -605,7 +605,9 @@ void retro_cheat_set(unsigned index, bool enabled, const char* code) {
 		cheatSet = device->createSet(device, NULL);
 		mCheatAddSet(device, cheatSet);
 	}
-	// Convert the super wonky unportable libretro format to something normal
+// Convert the super wonky unportable libretro format to something normal
+#ifdef M_CORE_GBA
+	if (core->platform(core) == PLATFORM_GBA) {
 		char realCode[] = "XXXXXXXX XXXXXXXX";
 		size_t len = strlen(code) + 1; // Include null terminator
 		size_t i, pos;
@@ -623,6 +625,29 @@ void retro_cheat_set(unsigned index, bool enabled, const char* code) {
 			}
 			++pos;
 		}
+	}
+#endif
+#ifdef M_CORE_GB
+	if (core->platform(core) == PLATFORM_GB) {
+		char realCode[] = "XXX-XXX-XXX";
+		size_t len = strlen(code) + 1; // Include null terminator
+		size_t i, pos;
+		for (i = 0, pos = 0; i < len; ++i) {
+			if (isspace((int) code[i]) || code[i] == '+') {
+				realCode[pos] = '\0';
+			} else {
+				realCode[pos] = code[i];
+			}
+			if (pos == 11 || !realCode[pos]) {
+				realCode[pos] = '\0';
+				mCheatAddLine(cheatSet, realCode, 0);
+				pos = 0;
+				continue;
+			}
+			++pos;
+		}
+	}
+#endif
 }
 
 unsigned retro_get_region(void) {