terminal_interface-curses-forms-field_types-enumeration.adb [plain text]
with Ada.Unchecked_Deallocation;
with Interfaces.C; use Interfaces.C;
with Interfaces.C.Strings; use Interfaces.C.Strings;
with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux;
package body Terminal_Interface.Curses.Forms.Field_Types.Enumeration is
function Create (Info : Enumeration_Info;
Auto_Release_Names : Boolean := False)
return Enumeration_Field
is
procedure Release_String is
new Ada.Unchecked_Deallocation (String,
String_Access);
E : Enumeration_Field;
L : constant size_t := 1 + size_t (Info.C);
S : String_Access;
begin
E.Case_Sensitive := Info.Case_Sensitive;
E.Match_Must_Be_Unique := Info.Match_Must_Be_Unique;
E.Arr := new chars_ptr_array (size_t (1) .. L);
for I in 1 .. Positive (L - 1) loop
if Info.Names (I) = null then
raise Form_Exception;
end if;
E.Arr (size_t (I)) := New_String (Info.Names (I).all);
if Auto_Release_Names then
S := Info.Names (I);
Release_String (S);
end if;
end loop;
E.Arr (L) := Null_Ptr;
return E;
end Create;
procedure Release (Enum : in out Enumeration_Field)
is
I : size_t := 0;
P : chars_ptr;
begin
loop
P := Enum.Arr (I);
exit when P = Null_Ptr;
Free (P);
Enum.Arr (I) := Null_Ptr;
I := I + 1;
end loop;
Enum.Arr := null;
end Release;
procedure Set_Field_Type (Fld : in Field;
Typ : in Enumeration_Field)
is
C_Enum_Type : C_Field_Type;
pragma Import (C, C_Enum_Type, "TYPE_ENUM");
function Set_Fld_Type (F : Field := Fld;
Cft : C_Field_Type := C_Enum_Type;
Arg1 : chars_ptr_array;
Arg2 : C_Int;
Arg3 : C_Int) return C_Int;
pragma Import (C, Set_Fld_Type, "set_field_type");
Res : Eti_Error;
begin
if Typ.Arr = null then
raise Form_Exception;
end if;
Res := Set_Fld_Type (Arg1 => Typ.Arr.all,
Arg2 => C_Int (Boolean'Pos (Typ.Case_Sensitive)),
Arg3 => C_Int (Boolean'Pos
(Typ.Match_Must_Be_Unique)));
if Res /= E_Ok then
Eti_Exception (Res);
end if;
Wrap_Builtin (Fld, Typ, C_Choice_Router);
end Set_Field_Type;
end Terminal_Interface.Curses.Forms.Field_Types.Enumeration;