-- B O D Y --
-- --
------------------------------------------------------------------------------
--- Copyright (c) 1998 Free Software Foundation, Inc. --
+-- Copyright (c) 1998-2009,2011 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 --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
--- Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1996
+-- Author: Juergen Pfeifer, 1996
-- Version Control
--- $Revision: 1.12 $
+-- $Revision: 1.26 $
+-- $Date: 2011/03/26 22:33:29 $
-- Binding Version 01.00
------------------------------------------------------------------------------
-- Poor mans help system. This scans a sequential file for key lines and
Help_Keys : constant String := "HELPKEYS";
In_Help : constant String := "INHELP";
- File_Name : String := "explain.msg";
+ File_Name : constant String := "explain.txt";
F : File_Type;
type Help_Line;
Line : String_Access;
end record;
- procedure Explain (Key : in String;
- Win : in Window);
+ procedure Explain (Key : String;
+ Win : Window);
procedure Release_String is
new Ada.Unchecked_Deallocation (String,
function Search (Key : String) return Help_Line_Access;
procedure Release_Help (Root : in out Help_Line_Access);
- procedure Explain (Key : in String)
+ function Check_File (Name : String) return Boolean;
+
+ procedure Explain (Key : String)
is
begin
Explain (Key, Null_Window);
end Explain;
- procedure Explain (Key : in String;
- Win : in Window)
+ procedure Explain (Key : String;
+ Win : Window)
is
-- Retrieve the text associated with this key and display it in this
-- window. If no window argument is passed, the routine will create
Current : Help_Line_Access;
Top_Line : Help_Line_Access;
- Has_More : Boolean;
+ Has_More : Boolean := True;
procedure Unknown_Key
is
Add (W, Key);
Add (W, " not found.");
Add (W, Character'Val (10));
- Add (W, "Press the Function key labelled 'Quit' key to continue.");
+ Add (W, "Press the Function key labeled 'Quit' key to continue.");
end Unknown_Key;
procedure Redo
begin
if Top_Line /= null then
for L in 0 .. (Height - 1) loop
- Add (W, L, 0, H.Line.all);
- exit when H.Next = null;
- H := H.Next;
+ Add (W, L, 0, H.all.Line.all);
+ exit when H.all.Next = null;
+ H := H.all.Next;
end loop;
else
Unknown_Key;
L : Line_Position := 0;
begin
loop
- Add (W, L, 0, C.Line.all);
+ Add (W, L, 0, C.all.Line.all);
L := L + 1;
- exit when C.Next = null or else L = Height;
- C := C.Next;
+ exit when C.all.Next = null or else L = Height;
+ C := C.all.Next;
end loop;
- if C.Next /= null then
+ if C.all.Next /= null then
pragma Assert (L = Height);
More := True;
else
if K in Special_Key_Code'Range then
case K is
when Key_Cursor_Down =>
- if Current.Next /= null then
+ if Current.all.Next /= null then
Move_Cursor (W, Height - 1, 0);
Scroll (W, 1);
- Current := Current.Next;
- Top_Line := Top_Line.Next;
- Add (W, Current.Line.all);
+ Current := Current.all.Next;
+ Top_Line := Top_Line.all.Next;
+ Add (W, Current.all.Line.all);
end if;
when Key_Cursor_Up =>
- if Top_Line.Prev /= null then
+ if Top_Line.all.Prev /= null then
Move_Cursor (W, 0, 0);
Scroll (W, -1);
- Top_Line := Top_Line.Prev;
- Current := Current.Prev;
- Add (W, Top_Line.Line.all);
+ Top_Line := Top_Line.all.Prev;
+ Current := Current.all.Prev;
+ Add (W, Top_Line.all.Line.all);
end if;
when QUIT_CODE => exit;
when others => null;
Reset (F);
Outer :
loop
- exit when not Next_Line;
+ exit Outer when not Next_Line;
if Last = (1 + Key'Length) and then Key = Buffer (2 .. Last)
and then Buffer (1) = '#' then
loop
Release_Help (Root);
Root := Current;
else
- Tail.Next := Current;
- Current.Prev := Tail;
+ Tail.all.Next := Current;
+ Current.all.Prev := Tail;
end if;
Tail := Current;
end loop;
begin
loop
exit when Root = null;
- Next := Root.Next;
- Release_String (Root.Line);
+ Next := Root.all.Next;
+ Release_String (Root.all.Line);
Release_Help_Line (Root);
Root := Next;
end loop;
Explain (Context);
end Explain_Context;
- procedure Notepad (Key : in String)
+ procedure Notepad (Key : String)
is
H : constant Help_Line_Access := Search (Key);
T : Help_Line_Access := H;
begin
if H /= null then
loop
- T := T.Next;
+ T := T.all.Next;
exit when T = null;
N := N + 1;
end loop;
P := New_Panel (W);
T := H;
loop
- Add (W, L + 1, 1, T.Line.all, Integer (Columns - 2));
+ Add (W, L + 1, 1, T.all.Line.all, Integer (Columns - 2));
L := L + 1;
- T := T.Next;
+ T := T.all.Next;
exit when T = null;
end loop;
T := H;
end if;
end Notepad;
+ function Check_File (Name : String) return Boolean is
+ The_File : File_Type;
+ begin
+ Open (The_File, In_File, Name);
+ Close (The_File);
+ return True;
+ exception
+ when Name_Error =>
+ return False;
+ end Check_File;
+
begin
- Open (F, In_File, File_Name);
+ if Check_File ("/usr/share/AdaCurses/" & File_Name) then
+ Open (F, In_File, "/usr/share/AdaCurses/" & File_Name);
+ elsif Check_File (File_Name) then
+ Open (F, In_File, File_Name);
+ else
+ Put_Line (Standard_Error,
+ "The file explain.txt was not found in the current directory."
+ );
+ raise Name_Error;
+ end if;
end Sample.Explanation;
-
projects / ncurses.git / blobdiff