$file = "UIrrigation_Impl.inc"
$content = Get-Content $file -Encoding UTF8 -Raw

$oldEval = @"
  function EvalIrriConditions(const AConds: array of TAutoCondItem): Boolean;
  var i: Integer;
  begin
    if Length(AConds) = 0 then Exit(True);
    for i := 0 to High(AConds) do
      if not frmMain.EvalOneCondition(AConds[i]) then
        Exit(False);
    Result := True;
  end;
"@

$newEval = @"
  function EvalIrriConditions(const AConds: array of TAutoCondItem; AMode: TAutoCondMode): Boolean;
  var i: Integer;
  begin
    if Length(AConds) = 0 then Exit(True);
    if AMode = acmOR then
    begin
      for i := 0 to High(AConds) do
        if frmMain.EvalOneCondition(AConds[i]) then Exit(True);
      Result := False;
    end
    else
    begin
      for i := 0 to High(AConds) do
        if not frmMain.EvalOneCondition(AConds[i]) then Exit(False);
      Result := True;
    end;
  end;
"@

$content = $content.Replace($oldEval, $newEval)
$content = $content.Replace("EvalIrriConditions(CurAct.EndConds)", "EvalIrriConditions(CurAct.EndConds, CurAct.EndCondMode)")
$content = $content.Replace("EvalIrriConditions(CurAct.StartConds)", "EvalIrriConditions(CurAct.StartConds, CurAct.StartCondMode)")
$content = $content.Replace("EvalIrriConditions(CurAct.StopConds)", "EvalIrriConditions(CurAct.StopConds, CurAct.StopCondMode)")

Set-Content -Path $file -Value $content -Encoding UTF8