/**
* @brief Reads from a buffer according to format; version without syntactic sugar for variable arguments, to call it from other functions with variable arguments
* @sa SV_ReadFormat
* @param[in] buf The buffer we read the data from
* @param[in] format The format string may not be nullptr
* @param ap The variadic function argument list corresponding to the format string
*/
void NET_vReadFormat (dbuffer* buf, const char* format, va_list ap)
{
while (*format) {
const char typeID = *format++;
switch (typeID) {
case 'c':
*va_arg(ap, int*) = NET_ReadChar(buf);
break;
case 'b':
*va_arg(ap, int*) = NET_ReadByte(buf);
break;
case 's':
*va_arg(ap, int*) = NET_ReadShort(buf);
break;
case 'l':
*va_arg(ap, int*) = NET_ReadLong(buf);
break;
case 'p':
NET_ReadPos(buf, *va_arg(ap, vec3_t*));
break;
case 'g':
NET_ReadGPos(buf, *va_arg(ap, pos3_t*));
break;
case 'd':
NET_ReadDir(buf, *va_arg(ap, vec3_t*));
break;
case 'a':
*va_arg(ap, float*) = NET_ReadAngle(buf);
break;
case '!':
format++;
break;
case '&': {
char* str = va_arg(ap, char*);
const size_t length = va_arg(ap, size_t);
NET_ReadString(buf, str, length);
break;
}
case '*':
{
const int n = NET_ReadShort(buf);
*va_arg(ap, int*) = n;
byte* p = va_arg(ap, byte*);
for (int i = 0; i < n; i++)
*p++ = NET_ReadByte(buf);
}
break;
default:
Com_Error(ERR_DROP, "ReadFormat: Unknown type!");
}
}
/* Too many arguments for the given format; too few cause crash above */
#ifdef PARANOID
if (!ap)
Com_Error(ERR_DROP, "ReadFormat: Too many arguments!");
#endif
}
void NET_SkipFormat (dbuffer* buf, const char* format)
{
while (*format) {
const char typeID = *format++;
switch (typeID) {
case 'c':
NET_ReadChar(buf);
break;
case 'b':
NET_ReadByte(buf);
break;
case 's':
NET_ReadShort(buf);
break;
case 'l':
NET_ReadLong(buf);
break;
case 'p': {
vec3_t v;
NET_ReadPos(buf, v);
break;
}
case 'g': {
pos3_t p;
NET_ReadGPos(buf, p);
break;
}
case 'd': {
vec3_t v;
NET_ReadDir(buf, v);
break;
}
case 'a':
NET_ReadAngle(buf);
break;
case '!':
format++;
break;
case '&':
NET_ReadString(buf, nullptr, 0);
break;
case '*': {
const int n = NET_ReadShort(buf);
for (int i = 0; i < n; i++)
NET_ReadByte(buf);
break;
}
default:
Com_Error(ERR_DROP, "ReadFormat: Unknown type!");
}
}
}
static int SV_ReadChar (void)
{
return NET_ReadChar(sv->messageBuffer);
}
float NET_ReadAngle (dbuffer* buf)
{
return (float) NET_ReadChar(buf) * (360.0f / 256);
}
