獲取ios設備名稱方法，比較全面

因爲我的項目是unity的，所以把NSString轉成char，這個獲取方法包含比較新的iPhone XR，XS，XS Max等
具體可以參考https://www.theiphonewiki.com/wiki/Models
char* nmg_util_getDeviceModelName()
{

    struct utsname systemInfo;
    
    uname(&systemInfo);
    
    NSString*platform = [NSString stringWithCString: systemInfo.machine encoding:NSASCIIStringEncoding];
    NSString *sysDeviceModelName = @"";
    if([platform isEqualToString:@"iPhone1,1"])  sysDeviceModelName = @"iPhone 2G";
    
    if([platform isEqualToString:@"iPhone1,2"])  sysDeviceModelName = @"iPhone 3G";
    
    if([platform isEqualToString:@"iPhone2,1"])  sysDeviceModelName = @"iPhone 3GS";
    
    if([platform isEqualToString:@"iPhone3,1"])  sysDeviceModelName = @"iPhone 4";
    
    if([platform isEqualToString:@"iPhone3,2"])  sysDeviceModelName = @"iPhone 4";
    
    if([platform isEqualToString:@"iPhone3,3"])  sysDeviceModelName = @"iPhone 4";
    
    if([platform isEqualToString:@"iPhone4,1"])  sysDeviceModelName = @"iPhone 4S";
    
    if([platform isEqualToString:@"iPhone5,1"])  sysDeviceModelName = @"iPhone 5";
    
    if([platform isEqualToString:@"iPhone5,2"])  sysDeviceModelName = @"iPhone 5";
    
    if([platform isEqualToString:@"iPhone5,3"])  sysDeviceModelName = @"iPhone 5c";
    
    if([platform isEqualToString:@"iPhone5,4"])  sysDeviceModelName = @"iPhone 5c";
    
    if([platform isEqualToString:@"iPhone6,1"])  sysDeviceModelName = @"iPhone 5s";
    
    if([platform isEqualToString:@"iPhone6,2"])  sysDeviceModelName = @"iPhone 5s";
    
    if([platform isEqualToString:@"iPhone7,1"])  sysDeviceModelName = @"iPhone 6 Plus";
    
    if([platform isEqualToString:@"iPhone7,2"])  sysDeviceModelName = @"iPhone 6";
    
    if([platform isEqualToString:@"iPhone8,1"])  sysDeviceModelName = @"iPhone 6s";
    
    if([platform isEqualToString:@"iPhone8,2"])  sysDeviceModelName = @"iPhone 6s Plus";
    
    if([platform isEqualToString:@"iPhone8,4"])  sysDeviceModelName = @"iPhone SE";
    
    if([platform isEqualToString:@"iPhone9,1"])  sysDeviceModelName = @"iPhone 7";
    
    if([platform isEqualToString:@"iPhone9,3"])  sysDeviceModelName = @"iPhone 7";
    
    if([platform isEqualToString:@"iPhone9,2"])  sysDeviceModelName = @"iPhone 7 Plus";
    
    if([platform isEqualToString:@"iPhone9,4"])  sysDeviceModelName = @"iPhone 7 Plus";
    
    if([platform isEqualToString:@"iPhone10,1"]) sysDeviceModelName = @"iPhone 8";
    
    if([platform isEqualToString:@"iPhone10,4"]) sysDeviceModelName = @"iPhone 8";
    
    if([platform isEqualToString:@"iPhone10,2"]) sysDeviceModelName = @"iPhone 8 Plus";
    
    if([platform isEqualToString:@"iPhone10,5"]) sysDeviceModelName = @"iPhone 8 Plus";
    
    if([platform isEqualToString:@"iPhone10,3"]) sysDeviceModelName = @"iPhone X";
    
    if([platform isEqualToString:@"iPhone10,6"]) sysDeviceModelName = @"iPhone X";
	
	if([platform isEqualToString:@"iPhone11,8"]) sysDeviceModelName = @"iPhone XR";
    
    if([platform isEqualToString:@"iPhone11,2"]) sysDeviceModelName = @"iPhone XS";
	
	if([platform isEqualToString:@"iPhone11,6"]) sysDeviceModelName = @"iPhone XS Max";
    
    if([platform isEqualToString:@"iPod1,1"])  sysDeviceModelName = @"iPod Touch 1G";
    
    if([platform isEqualToString:@"iPod2,1"])  sysDeviceModelName = @"iPod Touch 2G";
    
    if([platform isEqualToString:@"iPod3,1"])  sysDeviceModelName = @"iPod Touch 3G";
    
    if([platform isEqualToString:@"iPod4,1"])  sysDeviceModelName = @"iPod Touch 4G";
    
    if([platform isEqualToString:@"iPod5,1"])  sysDeviceModelName = @"iPod Touch 5G";
    
    if([platform isEqualToString:@"iPad1,1"])  sysDeviceModelName = @"iPad 1G";
    
    if([platform isEqualToString:@"iPad2,1"])  sysDeviceModelName = @"iPad 2";
    
    if([platform isEqualToString:@"iPad2,2"])  sysDeviceModelName = @"iPad 2";
    
    if([platform isEqualToString:@"iPad2,3"])  sysDeviceModelName = @"iPad 2";
    
    if([platform isEqualToString:@"iPad2,4"])  sysDeviceModelName = @"iPad 2";
    
    if([platform isEqualToString:@"iPad2,5"])  sysDeviceModelName = @"iPad Mini 1G";
    
    if([platform isEqualToString:@"iPad2,6"])  sysDeviceModelName = @"iPad Mini 1G";
    
    if([platform isEqualToString:@"iPad2,7"])  sysDeviceModelName = @"iPad Mini 1G";
    
    if([platform isEqualToString:@"iPad3,1"])  sysDeviceModelName = @"iPad 3";
    
    if([platform isEqualToString:@"iPad3,2"])  sysDeviceModelName = @"iPad 3";
    
    if([platform isEqualToString:@"iPad3,3"])  sysDeviceModelName = @"iPad 3";
    
    if([platform isEqualToString:@"iPad3,4"])  sysDeviceModelName = @"iPad 4";
    
    if([platform isEqualToString:@"iPad3,5"])  sysDeviceModelName = @"iPad 4";
    
    if([platform isEqualToString:@"iPad3,6"])  sysDeviceModelName = @"iPad 4";
    
    if([platform isEqualToString:@"iPad4,1"])  sysDeviceModelName = @"iPad Air";
    
    if([platform isEqualToString:@"iPad4,2"])  sysDeviceModelName = @"iPad Air";
    
    if([platform isEqualToString:@"iPad4,3"])  sysDeviceModelName = @"iPad Air";
    
    if([platform isEqualToString:@"iPad4,4"])  sysDeviceModelName = @"iPad Mini 2G";
    
    if([platform isEqualToString:@"iPad4,5"])  sysDeviceModelName = @"iPad Mini 2G";
    
    if([platform isEqualToString:@"iPad4,6"])  sysDeviceModelName = @"iPad Mini 2G";
    
    if([platform isEqualToString:@"iPad4,7"])  sysDeviceModelName = @"iPad Mini 3";
    
    if([platform isEqualToString:@"iPad4,8"])  sysDeviceModelName = @"iPad Mini 3";
    
    if([platform isEqualToString:@"iPad4,9"])  sysDeviceModelName = @"iPad Mini 3";
    
    if([platform isEqualToString:@"iPad5,1"])  sysDeviceModelName = @"iPad Mini 4";
    
    if([platform isEqualToString:@"iPad5,2"])  sysDeviceModelName = @"iPad Mini 4";
    
    if([platform isEqualToString:@"iPad5,3"])  sysDeviceModelName = @"iPad Air 2";
    
    if([platform isEqualToString:@"iPad5,4"])  sysDeviceModelName = @"iPad Air 2";
    
    if([platform isEqualToString:@"iPad6,3"])  sysDeviceModelName = @"iPad Pro 9.7";
    
    if([platform isEqualToString:@"iPad6,4"])  sysDeviceModelName = @"iPad Pro 9.7";
    
    if([platform isEqualToString:@"iPad6,7"])  sysDeviceModelName = @"iPad Pro 12.9";
    
    if([platform isEqualToString:@"iPad6,8"])  sysDeviceModelName = @"iPad Pro 12.9";
	
	if([platform isEqualToString:@"iPad6,11"])  sysDeviceModelName = @"iPad 5";
    
    if([platform isEqualToString:@"iPad6,12"])  sysDeviceModelName = @"iPad 5";
	
	if([platform isEqualToString:@"iPad7,1"])  sysDeviceModelName = @"iPad Pro 12.9";
    
    if([platform isEqualToString:@"iPad7,2"])  sysDeviceModelName = @"iPad Pro 12.9";
	
	if([platform isEqualToString:@"iPad7,3"])  sysDeviceModelName = @"iPad Pro 10.5";
    
    if([platform isEqualToString:@"iPad7,4"])  sysDeviceModelName = @"iPad Pro 10.5";
			
	if([platform isEqualToString:@"iPad7,5"])  sysDeviceModelName = @"iPad 6";
    
    if([platform isEqualToString:@"iPad7,6"])  sysDeviceModelName = @"iPad 6";
			
	if([platform isEqualToString:@"iPad8,1"])  sysDeviceModelName = @"iPad Pro 11";
    
    if([platform isEqualToString:@"iPad8,2"])  sysDeviceModelName = @"iPad Pro 11";
			
	if([platform isEqualToString:@"iPad8,3"])  sysDeviceModelName = @"iPad Pro 11";
    
    if([platform isEqualToString:@"iPad8,4"])  sysDeviceModelName = @"iPad Pro 11";
			
	if([platform isEqualToString:@"iPad8,5"])  sysDeviceModelName = @"iPad Pro 12.9";
    
    if([platform isEqualToString:@"iPad8,6"])  sysDeviceModelName = @"iPad Pro 12.9";
					
	if([platform isEqualToString:@"iPad8,7"])  sysDeviceModelName = @"iPad Pro 12.9";
    
    if([platform isEqualToString:@"iPad8,8"])  sysDeviceModelName = @"iPad Pro 12.9";
	        
    if([platform isEqualToString:@"iPad11,3"])  sysDeviceModelName = @"iPad Air 3";
    
    if([platform isEqualToString:@"iPad11,4"])  sysDeviceModelName = @"iPad Air 3";
    
    if([platform isEqualToString:@"i386"])  sysDeviceModelName = @"iPhone Simulator";
    
    if([platform isEqualToString:@"x86_64"])  sysDeviceModelName = @"iPhone Simulator";
    
    NSLog(@"[NMGUtilUnity] nmg_util_getDeviceModelName:%@",sysDeviceModelName);
    return (char*)[sysDeviceModelName UTF8String];
}