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Diffstat (limited to 'ncurses-5.3/Ada95/src/terminal_interface-curses-terminfo.adb')
| -rw-r--r-- | ncurses-5.3/Ada95/src/terminal_interface-curses-terminfo.adb | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/ncurses-5.3/Ada95/src/terminal_interface-curses-terminfo.adb b/ncurses-5.3/Ada95/src/terminal_interface-curses-terminfo.adb new file mode 100644 index 0000000..004e387 --- /dev/null +++ b/ncurses-5.3/Ada95/src/terminal_interface-curses-terminfo.adb @@ -0,0 +1,162 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT ncurses Binding -- +-- -- +-- Terminal_Interface.Curses.Terminfo -- +-- -- +-- B O D Y -- +-- -- +------------------------------------------------------------------------------ +-- Copyright (c) 2000 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 +-- Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en +-- Version Control: +-- $Revision$ +-- 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; |