------------------------------------------------------------------------------ -- -- -- GNAT ncurses Binding -- -- -- -- Terminal_Interface.Curses.Terminfo -- -- -- -- B O D Y -- -- -- ------------------------------------------------------------------------------ -- Copyright (c) 1998-2000,2006 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: 1.5 $ -- $Date: 2006/06/25 14:30:22 $ -- 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; with Ada.Unchecked_Conversion; package body Terminal_Interface.Curses.Terminfo is function Is_MinusOne_Pointer (P : in chars_ptr) return Boolean; function Is_MinusOne_Pointer (P : in chars_ptr) return Boolean is type Weird_Address is new System.Storage_Elements.Integer_Address; Invalid_Pointer : constant Weird_Address := -1; function To_Weird is new Ada.Unchecked_Conversion (Source => chars_ptr, Target => Weird_Address); begin if To_Weird (P) = Invalid_Pointer then return True; else return False; end if; end Is_MinusOne_Pointer; pragma Inline (Is_MinusOne_Pointer); ------------------------------------------------------------------------------ function Get_Flag (Name : String) return Boolean is function tigetflag (id : char_array) return Curses_Bool; pragma Import (C, tigetflag); Txt : char_array (0 .. Name'Length); Length : size_t; begin To_C (Name, Txt, Length); if tigetflag (Txt) = Curses_Bool (Curses_True) then return True; else return False; end if; end Get_Flag; ------------------------------------------------------------------------------ procedure Get_String (Name : String; Value : out Terminfo_String; Result : out Boolean) is function tigetstr (id : char_array) return chars_ptr; pragma Import (C, tigetstr, "tigetstr"); Txt : char_array (0 .. Name'Length); Length : size_t; Txt2 : chars_ptr; begin To_C (Name, Txt, Length); Txt2 := tigetstr (Txt); if Txt2 = Null_Ptr then Result := False; elsif Is_MinusOne_Pointer (Txt2) then raise Curses_Exception; else Value := Terminfo_String (Fill_String (Txt2)); Result := True; end if; end Get_String; ------------------------------------------------------------------------------ function Has_String (Name : String) return Boolean is function tigetstr (id : char_array) return chars_ptr; pragma Import (C, tigetstr, "tigetstr"); Txt : char_array (0 .. Name'Length); Length : size_t; Txt2 : chars_ptr; begin To_C (Name, Txt, Length); Txt2 := tigetstr (Txt); if Txt2 = Null_Ptr then return False; elsif Is_MinusOne_Pointer (Txt2) then raise Curses_Exception; else return True; end if; end Has_String; ------------------------------------------------------------------------------ function Get_Number (Name : String) return Integer is function tigetstr (s : char_array) return C_Int; pragma Import (C, tigetstr); Txt : char_array (0 .. Name'Length); Length : size_t; begin To_C (Name, Txt, Length); return Integer (tigetstr (Txt)); end Get_Number; ------------------------------------------------------------------------------ procedure Put_String (Str : Terminfo_String; affcnt : Natural := 1; putc : putctype := null) is function tputs (str : char_array; affcnt : C_Int; putc : putctype) return C_Int; function putp (str : char_array) return C_Int; pragma Import (C, tputs); pragma Import (C, putp); Txt : char_array (0 .. Str'Length); Length : size_t; Err : C_Int; begin To_C (String (Str), Txt, Length); if putc = null then Err := putp (Txt); else Err := tputs (Txt, C_Int (affcnt), putc); end if; if Err = Curses_Err then raise Curses_Exception; end if; end Put_String; end Terminal_Interface.Curses.Terminfo;