1------------------------------------------------------------------------------ 2-- -- 3-- GNAT ncurses Binding -- 4-- -- 5-- Terminal_Interface.Curses.Termcap -- 6-- -- 7-- B O D Y -- 8-- -- 9------------------------------------------------------------------------------ 10-- Copyright 2020 Thomas E. Dickey -- 11-- Copyright 2000-2006,2009 Free Software Foundation, Inc. -- 12-- -- 13-- Permission is hereby granted, free of charge, to any person obtaining a -- 14-- copy of this software and associated documentation files (the -- 15-- "Software"), to deal in the Software without restriction, including -- 16-- without limitation the rights to use, copy, modify, merge, publish, -- 17-- distribute, distribute with modifications, sublicense, and/or sell -- 18-- copies of the Software, and to permit persons to whom the Software is -- 19-- furnished to do so, subject to the following conditions: -- 20-- -- 21-- The above copyright notice and this permission notice shall be included -- 22-- in all copies or substantial portions of the Software. -- 23-- -- 24-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -- 25-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -- 26-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -- 27-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -- 28-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -- 29-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR -- 30-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. -- 31-- -- 32-- Except as contained in this notice, the name(s) of the above copyright -- 33-- holders shall not be used in advertising or otherwise to promote the -- 34-- sale, use or other dealings in this Software without prior written -- 35-- authorization. -- 36------------------------------------------------------------------------------ 37-- Author: Juergen Pfeifer, 1996 38-- Version Control: 39-- $Revision: 1.13 $ 40-- $Date: 2020/02/02 23:34:34 $ 41-- Binding Version 01.00 42------------------------------------------------------------------------------ 43 44with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux; 45with Interfaces.C; use Interfaces.C; 46with Interfaces.C.Strings; use Interfaces.C.Strings; 47 48package body Terminal_Interface.Curses.Termcap is 49 50 function Get_Entry (Name : String) return Boolean 51 is 52 function tgetent (name : char_array; val : char_array) 53 return C_Int; 54 pragma Import (C, tgetent, "tgetent"); 55 NameTxt : char_array (0 .. Name'Length); 56 Length : size_t; 57 ignored : constant char_array (0 .. 0) := (0 => nul); 58 result : C_Int; 59 begin 60 To_C (Name, NameTxt, Length); 61 result := tgetent (char_array (ignored), NameTxt); 62 if result = -1 then 63 raise Curses_Exception; 64 else 65 return Boolean'Val (result); 66 end if; 67 end Get_Entry; 68 69------------------------------------------------------------------------------ 70 function Get_Flag (Name : String) return Boolean 71 is 72 function tgetflag (id : char_array) return C_Int; 73 pragma Import (C, tgetflag, "tgetflag"); 74 Txt : char_array (0 .. Name'Length); 75 Length : size_t; 76 begin 77 To_C (Name, Txt, Length); 78 if tgetflag (Txt) = 0 then 79 return False; 80 else 81 return True; 82 end if; 83 end Get_Flag; 84 85------------------------------------------------------------------------------ 86 procedure Get_Number (Name : String; 87 Value : out Integer; 88 Result : out Boolean) 89 is 90 function tgetnum (id : char_array) return C_Int; 91 pragma Import (C, tgetnum, "tgetnum"); 92 Txt : char_array (0 .. Name'Length); 93 Length : size_t; 94 begin 95 To_C (Name, Txt, Length); 96 Value := Integer (tgetnum (Txt)); 97 if Value = -1 then 98 Result := False; 99 else 100 Result := True; 101 end if; 102 end Get_Number; 103 104------------------------------------------------------------------------------ 105 procedure Get_String (Name : String; 106 Value : out String; 107 Result : out Boolean) 108 is 109 function tgetstr (id : char_array; 110 buf : char_array) return chars_ptr; 111 pragma Import (C, tgetstr, "tgetstr"); 112 Txt : char_array (0 .. Name'Length); 113 Length : size_t; 114 Txt2 : chars_ptr; 115 type t is new char_array (0 .. 1024); -- does it need to be 1024? 116 Return_Buffer : constant t := (others => nul); 117 begin 118 To_C (Name, Txt, Length); 119 Txt2 := tgetstr (Txt, char_array (Return_Buffer)); 120 if Txt2 = Null_Ptr then 121 Result := False; 122 else 123 Value := Fill_String (Txt2); 124 Result := True; 125 end if; 126 end Get_String; 127 128 function Get_String (Name : String) return Boolean 129 is 130 function tgetstr (Id : char_array; 131 buf : char_array) return chars_ptr; 132 pragma Import (C, tgetstr, "tgetstr"); 133 Txt : char_array (0 .. Name'Length); 134 Length : size_t; 135 Txt2 : chars_ptr; 136 type t is new char_array (0 .. 1024); -- does it need to be 1024? 137 Phony_Txt : constant t := (others => nul); 138 begin 139 To_C (Name, Txt, Length); 140 Txt2 := tgetstr (Txt, char_array (Phony_Txt)); 141 if Txt2 = Null_Ptr then 142 return False; 143 else 144 return True; 145 end if; 146 end Get_String; 147 148------------------------------------------------------------------------------ 149 function TGoto (Cap : String; 150 Col : Column_Position; 151 Row : Line_Position) return Termcap_String is 152 function tgoto (cap : char_array; 153 col : C_Int; 154 row : C_Int) return chars_ptr; 155 pragma Import (C, tgoto); 156 Txt : char_array (0 .. Cap'Length); 157 Length : size_t; 158 begin 159 To_C (Cap, Txt, Length); 160 return Termcap_String (Fill_String 161 (tgoto (Txt, C_Int (Col), C_Int (Row)))); 162 end TGoto; 163 164end Terminal_Interface.Curses.Termcap; 165