here i did a quick code how i mean it. Should work, but I didn't test it:

Code:

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#define keyForward 0
#define keyBackward 1
#define keyStrafeLeft 2
#define keyStrafeRight 3
#define keyRun 4
#define keyJump 5
#define keyStrafe 6

#define numberOfKeys 7

STRING* keyMappingStr[numberOfKeys];

void mappingInit()
{
	int i;
	int fileHandle;
	fileHandle = file_open_read("keyMapping");
	for(i=0;i<numberOfKeys;i++)
	{
		keyMappingStr[i] = file_str_read(fileHandle);
	}
	file_close(fileHandle);
}

int getKey(key)
{
	return (key_pressed(key_for_str(keyMappingStr[key])));
}

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