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-------------------------------------------------------------------------------
-- --
-- Ada Interface to the X Window System and Motif(tm)/Lesstif --
-- Copyright (c) 1996-2000 Hans-Frieder Vogt --
-- --
-- Adabindx is free software; you can redistribute it and/or modify it --
-- under the terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 2 of the License, or (at your --
-- option) any later version. --
-- --
-- This program is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- See the GNU General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this program; if not, write to the --
-- Free Software Foundation, Inc., --
-- 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU General Public License. --
-- --
-- X Window System is copyrighted by the X Consortium --
-- Motif(tm) is copyrighted by the Open Software Foundation, Inc. --
-- and by The Open Group --
-- --
-- --
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
--
-- HISTORY:
-- June 20, 1998 begin of history
--
-------------------------------------------------------------------------------
package body String_List_Conversion is
use Interfaces.C,
Interfaces.C.Strings;
function To_Chars_Ptr_Array (Str_List : in String_List.Element_Access_List;
Append_Null : in Boolean := False)
return Chars_Ptr_Array is
Str_Array : constant String_List.Element_Array := String_List.To_Element_Array (Str_List);
Last_Idx : Natural;
begin
if Append_Null then
Last_Idx := Str_Array'Last + 1;
else
Last_Idx := Str_Array'Last;
end if;
declare
Ret : Chars_Ptr_Array (Index_Type (Str_Array'First) .. Index_Type (Last_Idx));
begin
for I in Str_Array'Range loop
Ret (Index_Type (I)) := New_String (Str_Array (I).all);
end loop;
if Append_Null then
Ret (Index_Type (Last_Idx)) := Null_Ptr;
end if;
return Ret;
end;
end To_Chars_Ptr_Array;
function To_Chars_Ptr_List (Str_List : in String_List.Element_Access_List;
Append_Null : in Boolean := False)
return Chars_Ptr_List_Type is
Ch_Arry : Chars_Ptr_Array := To_Chars_Ptr_Array (Str_List, Append_Null);
begin
return Interfaces.C.Strings.String_Lists.New_Chars_Ptr_Array (Ch_Arry, Append_Null => False);
end To_Chars_Ptr_List;
pragma Inline (To_Chars_Ptr_List);
function To_String_Access_List (Item : in Chars_Ptr_Array)
return String_List.Element_Access_List is
Last_Idx : Index_Type;
begin
-- look if NULL_PTR-Terminated, if yes, remove NULL_PTR
Last_Idx := Item'Last;
for I in Item'Range loop
if Item (I) = Null_Ptr then
Last_Idx := Index_Type (I) - 1;
exit;
end if;
end loop;
declare
Ret : String_List.Element_Array (Natural (Item'First) .. Natural (Last_Idx));
begin
for I in Ret'Range loop
Ret (I) := new String'(Value (Item (Index_Type (I))));
end loop;
return String_List.To_Element_Access_List (Ret);
end;
end To_String_Access_List;
-- if we only have a C-style pointer to the first element of a
-- Null-terminated array
function To_String_Access_List (Ref : in Chars_Ptr_List_Type) return
String_List.Element_Access_List is
begin
return To_String_Access_List (Interfaces.C.Strings.String_Lists.Value (Ref));
end To_String_Access_List;
procedure Free (Ref : in out Chars_Ptr_List_Type) is
begin
Interfaces.C.Strings.String_Lists.Free (Ref);
end Free;
pragma Inline (Free);
-- if we only have a C-style pointer to the first element of a
-- not terminated array, which size is known
function To_String_Access_List (Ref : in Chars_Ptr_List_Type;
Length : in Index_Type)
return String_List.Element_Access_List is
begin
-- we need to prevent exception Dereference_Error
if Length <= 0 then
return String_List.Null_Element_Access_List;
else
return To_String_Access_List (Interfaces.C.Strings.String_Lists.Value (Ref, Length));
end if;
end To_String_Access_List;
procedure Free
(Ref : in out Chars_Ptr_List_Type;
Length : in Index_Type) is
begin
Interfaces.C.Strings.String_Lists.Free (Ref, Length);
end Free;
pragma Inline (Free);
end String_List_Conversion;
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