File : terminal_interface-curses-termcap.adb
------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding --
-- --
-- Terminal_Interface.Curses.Termcap --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000,2004 Free Software Foundation, Inc. --
-- --
-- Permission is hereby granted, free of charge, to any person obtaining a --
-- copy of this software and associated documentation files (the --
-- "Software"), to deal in the Software without restriction, including --
-- without limitation the rights to use, copy, modify, merge, publish, --
-- distribute, distribute with modifications, sublicense, and/or sell --
-- copies of the Software, and to permit persons to whom the Software is --
-- furnished to do so, subject to the following conditions: --
-- --
-- The above copyright notice and this permission notice shall be included --
-- in all copies or substantial portions of the Software. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
-- --
-- Except as contained in this notice, the name(s) of the above copyright --
-- holders shall not be used in advertising or otherwise to promote the --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
-- Author: Juergen Pfeifer, 1996
-- Version Control:
-- @Revision: 1.9 @
-- @Date: 2004/08/21 21:37:00 @
-- Binding Version 01.00
------------------------------------------------------------------------------
with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux;
with Interfaces.C; use Interfaces.C;
with Interfaces.C.Strings; use Interfaces.C.Strings;
package body Terminal_Interface.Curses.Termcap is
function Get_Entry (Name : String) return Boolean
is
function tgetent (name : char_array; val : char_array)
return C_Int;
pragma Import (C, tgetent, "tgetent");
NameTxt : char_array (0 .. Name'Length);
Length : size_t;
ignored : constant char_array (0 .. 0) := (0 => nul);
result : C_Int;
begin
To_C (Name, NameTxt, Length);
result := tgetent (char_array (ignored), NameTxt);
if result = -1 then
raise Curses_Exception;
else
return Boolean'Val (result);
end if;
end Get_Entry;
------------------------------------------------------------------------------
function Get_Flag (Name : String) return Boolean
is
function tgetflag (id : char_array) return C_Int;
pragma Import (C, tgetflag, "tgetflag");
Txt : char_array (0 .. Name'Length);
Length : size_t;
begin
To_C (Name, Txt, Length);
if tgetflag (Txt) = 0 then
return False;
else
return True;
end if;
end Get_Flag;
------------------------------------------------------------------------------
procedure Get_Number (Name : in String;
Value : out Integer;
Result : out Boolean)
is
function tgetnum (id : char_array) return C_Int;
pragma Import (C, tgetnum, "tgetnum");
Txt : char_array (0 .. Name'Length);
Length : size_t;
begin
To_C (Name, Txt, Length);
Value := Integer (tgetnum (Txt));
if Value = -1 then
Result := False;
else
Result := True;
end if;
end Get_Number;
------------------------------------------------------------------------------
procedure Get_String (Name : String;
Value : out String;
Result : out Boolean)
is
function tgetstr (id : char_array;
buf : char_array) return chars_ptr;
pragma Import (C, tgetstr, "tgetstr");
Txt : char_array (0 .. Name'Length);
Length : size_t;
Txt2 : chars_ptr;
type t is new char_array (0 .. 1024); -- does it need to be 1024?
Return_Buffer : constant t := (others => nul);
begin
To_C (Name, Txt, Length);
Txt2 := tgetstr (Txt, char_array (Return_Buffer));
if Txt2 = Null_Ptr then
Result := False;
else
Value := Fill_String (Txt2);
Result := True;
end if;
end Get_String;
function Get_String (Name : String) return Boolean
is
function tgetstr (Id : char_array;
buf : char_array) return chars_ptr;
pragma Import (C, tgetstr, "tgetstr");
Txt : char_array (0 .. Name'Length);
Length : size_t;
Txt2 : chars_ptr;
type t is new char_array (0 .. 1024); -- does it need to be 1024?
Phony_Txt : constant t := (others => nul);
begin
To_C (Name, Txt, Length);
Txt2 := tgetstr (Txt, char_array (Phony_Txt));
if Txt2 = Null_Ptr then
return False;
else
return True;
end if;
end Get_String;
------------------------------------------------------------------------------
function TGoto (Cap : String;
Col : Column_Position;
Row : Line_Position) return Termcap_String is
function tgoto (cap : char_array;
col : C_Int;
row : C_Int) return chars_ptr;
pragma Import (C, tgoto);
Txt : char_array (0 .. Cap'Length);
Length : size_t;
begin
To_C (Cap, Txt, Length);
return Termcap_String (Fill_String
(tgoto (Txt, C_Int (Col), C_Int (Row))));
end TGoto;
end Terminal_Interface.Curses.Termcap;