Select mapping platform name at runtime

This is done in preparation for runtime platform selection.

src/cocoa_joystick.h

@@ -32,7 +32,6 @@
 #define _GLFW_PLATFORM_JOYSTICK_STATE         _GLFWjoystickNS ns
 #define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE struct { int dummyJoystick; }
 
-#define _GLFW_PLATFORM_MAPPING_NAME "Mac OS X"
 #define GLFW_BUILD_COCOA_MAPPINGS
 
 // Cocoa-specific per-joystick data

src/cocoa_joystick.m

@@ -469,6 +469,11 @@ int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
     return js->present;
 }
 
+const char* _glfwPlatformGetMappingName(void)
+{
+    return "Mac OS X";
+}
+
 void _glfwPlatformUpdateGamepadGUID(char* guid)
 {
     if ((strncmp(guid + 4, "000000000000", 12) == 0) &&

src/input.c

@@ -234,8 +234,9 @@ static GLFWbool parseMapping(_GLFWmapping* mapping, const char* string)
             }
             else
             {
-                length = strlen(_GLFW_PLATFORM_MAPPING_NAME);
-                if (strncmp(c, _GLFW_PLATFORM_MAPPING_NAME, length) != 0)
+                const char* name = _glfwPlatformGetMappingName();
+                length = strlen(name);
+                if (strncmp(c, name, length) != 0)
                     return GLFW_FALSE;
             }
 

src/internal.h

@@ -642,6 +642,7 @@ GLFWbool _glfwPlatformInitJoysticks(void);
 void _glfwPlatformTerminateJoysticks(void);
 int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode);
 void _glfwPlatformUpdateGamepadGUID(char* guid);
+const char* _glfwPlatformGetMappingName(void);
 
 uint64_t _glfwPlatformGetTimerValue(void);
 uint64_t _glfwPlatformGetTimerFrequency(void);

src/linux_joystick.c

@@ -422,6 +422,11 @@ int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
     return js->present;
 }
 
+const char* _glfwPlatformGetMappingName(void)
+{
+    return "Linux";
+}
+
 void _glfwPlatformUpdateGamepadGUID(char* guid)
 {
 }

src/linux_joystick.h

@@ -31,7 +31,6 @@
 #define _GLFW_PLATFORM_JOYSTICK_STATE         _GLFWjoystickLinux linjs
 #define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE _GLFWlibraryLinux  linjs
 
-#define _GLFW_PLATFORM_MAPPING_NAME "Linux"
 #define GLFW_BUILD_LINUX_MAPPINGS
 
 // Linux-specific joystick data

src/null_joystick.c

@@ -47,6 +47,11 @@ int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
     return GLFW_FALSE;
 }
 
+const char* _glfwPlatformGetMappingName(void)
+{
+    return "";
+}
+
 void _glfwPlatformUpdateGamepadGUID(char* guid)
 {
 }

src/null_joystick.h

@@ -27,5 +27,3 @@
 #define _GLFW_PLATFORM_JOYSTICK_STATE         struct { int dummyJoystick; }
 #define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE struct { int dummyLibraryJoystick; }
 
-#define _GLFW_PLATFORM_MAPPING_NAME ""
-

src/win32_joystick.c

@@ -740,6 +740,11 @@ int _glfwPlatformPollJoystick(_GLFWjoystick* js, int mode)
     return GLFW_TRUE;
 }
 
+const char* _glfwPlatformGetMappingName(void)
+{
+    return "Windows";
+}
+
 void _glfwPlatformUpdateGamepadGUID(char* guid)
 {
     if (strcmp(guid + 20, "504944564944") == 0)

src/win32_joystick.h

@@ -27,7 +27,6 @@
 #define _GLFW_PLATFORM_JOYSTICK_STATE         _GLFWjoystickWin32 win32
 #define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE struct { int dummyLibraryJoystick; }
 
-#define _GLFW_PLATFORM_MAPPING_NAME "Windows"
 #define GLFW_BUILD_WIN32_MAPPINGS
 
 // Joystick element (axis, button or slider)