CUtlBuffer::SetExternalBuffer

/* CUtlBuffer::SetExternalBuffer(void*, int, int, int) */

void __thiscall
CUtlBuffer::SetExternalBuffer(CUtlBuffer *this,void *param_1,int param_2,int param_3,int param_4)

{
  CUtlMemory<unsigned_char,int>::Purge((CUtlMemory<unsigned_char,int> *)this);
  *(int *)(this + 4) = param_2;
  *(undefined4 *)(this + 8) = 0xffffffff;
  *(undefined4 *)(this + 0xc) = 0;
  *(void **)this = param_1;
  *(int *)(this + 0x10) = param_3;
  *(undefined4 *)(this + 0x18) = 0;
  this[0x14] = (CUtlBuffer)0x0;
  *(undefined4 *)(this + 0x20) = 0;
  this[0x15] = SUB41(param_4,0);
  *(undefined4 *)(this + 0x1c) = 0xffffffff;
  if (-1 < param_3) {
    AddNullTermination(this);
    return;
  }
  return;
}