/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x14000dda0 FUN_14000dda0
 * Pseudocode, not original source. */

ulonglong FUN_14000dda0(char *param_1,char *param_2,char param_3,int param_4)

{
  char cVar1;
  uint _C;
  int iVar2;
  ulonglong in_RAX;
  undefined4 extraout_var;
  ulonglong uVar3;
  int _C_00;
  longlong lVar4;
  
  if ((param_1 == (char *)0x0) || (*param_1 == '\0')) {
    return in_RAX & 0xffffffffffffff00;
  }
  if (param_3 == '\0') {
    do {
      in_RAX = 0;
      if (*param_2 == '\0') goto LAB_14000de20;
      if (*param_1 != *param_2) break;
      param_1 = param_1 + 1;
      param_2 = param_2 + 1;
    } while (*param_1 != '\0');
    cVar1 = *param_2;
  }
  else {
    lVar4 = (longlong)param_1 - (longlong)param_2;
    do {
      if (*param_2 == '\0') goto LAB_14000de20;
      _C_00 = (int)param_2[lVar4];
      if ((param_4 != 1) || (_C_00 < 0x80)) {
        _C_00 = tolower(_C_00);
      }
      _C = (uint)*param_2;
      in_RAX = (ulonglong)_C;
      if ((param_4 != 1) || ((int)_C < 0x80)) {
        iVar2 = tolower(_C);
        in_RAX = CONCAT44(extraout_var,iVar2);
      }
    } while ((_C_00 == (int)in_RAX) && (param_2 = param_2 + 1, param_2[lVar4] != '\0'));
    cVar1 = *param_2;
  }
  if (cVar1 == '\0') {
LAB_14000de20:
    uVar3 = CONCAT71((int7)(in_RAX >> 8),1);
  }
  else {
    uVar3 = in_RAX & 0xffffffffffffff00;
  }
  return uVar3;
}