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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- L I B . U T I L --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Hostparm;
with Namet; use Namet;
with Osint.C; use Osint.C;
package body Lib.Util is
Max_Line : constant Natural := 2 * Hostparm.Max_Name_Length + 64;
Max_Buffer : constant Natural := 1000 * Max_Line;
Info_Buffer : String (1 .. Max_Buffer);
-- Info_Buffer used to prepare lines of library output
Info_Buffer_Len : Natural := 0;
-- Number of characters stored in Info_Buffer
Info_Buffer_Col : Natural := 1;
-- Column number of next character to be written.
-- Can be different from Info_Buffer_Len + 1
-- because of tab characters written by Write_Info_Tab.
---------------------
-- Write_Info_Char --
---------------------
procedure Write_Info_Char (C : Character) is
begin
Info_Buffer_Len := Info_Buffer_Len + 1;
Info_Buffer (Info_Buffer_Len) := C;
Info_Buffer_Col := Info_Buffer_Col + 1;
end Write_Info_Char;
--------------------------
-- Write_Info_Char_Code --
--------------------------
procedure Write_Info_Char_Code (Code : Char_Code) is
procedure Write_Info_Hex_Byte (J : Natural);
-- Write single hex digit
procedure Write_Info_Hex_Byte (J : Natural) is
Hexd : constant String := "0123456789abcdef";
begin
Write_Info_Char (Hexd (J / 16 + 1));
Write_Info_Char (Hexd (J mod 16 + 1));
end Write_Info_Hex_Byte;
-- Start of processing for Write_Info_Char_Code
begin
if Code in 16#00# .. 16#7F# then
Write_Info_Char (Character'Val (Code));
elsif Code in 16#80# .. 16#FF# then
Write_Info_Char ('U');
Write_Info_Hex_Byte (Natural (Code));
else
Write_Info_Char ('W');
Write_Info_Hex_Byte (Natural (Code / 256));
Write_Info_Hex_Byte (Natural (Code mod 256));
end if;
end Write_Info_Char_Code;
--------------------
-- Write_Info_Col --
--------------------
function Write_Info_Col return Positive is
begin
return Info_Buffer_Col;
end Write_Info_Col;
--------------------
-- Write_Info_EOL --
--------------------
procedure Write_Info_EOL is
begin
if Hostparm.OpenVMS
or else Info_Buffer_Len + Max_Line + 1 > Max_Buffer
then
Write_Info_Terminate;
else
-- Delete any trailing blanks
while Info_Buffer_Len > 0
and then Info_Buffer (Info_Buffer_Len) = ' '
loop
Info_Buffer_Len := Info_Buffer_Len - 1;
end loop;
Info_Buffer_Len := Info_Buffer_Len + 1;
Info_Buffer (Info_Buffer_Len) := ASCII.LF;
Info_Buffer_Col := 1;
end if;
end Write_Info_EOL;
-------------------------
-- Write_Info_Initiate --
-------------------------
procedure Write_Info_Initiate (Key : Character) renames Write_Info_Char;
---------------------
-- Write_Info_Name --
---------------------
procedure Write_Info_Name (Name : Name_Id) is
begin
Get_Name_String (Name);
Info_Buffer (Info_Buffer_Len + 1 .. Info_Buffer_Len + Name_Len) :=
Name_Buffer (1 .. Name_Len);
Info_Buffer_Len := Info_Buffer_Len + Name_Len;
Info_Buffer_Col := Info_Buffer_Col + Name_Len;
end Write_Info_Name;
--------------------
-- Write_Info_Nat --
--------------------
procedure Write_Info_Nat (N : Nat) is
begin
if N > 9 then
Write_Info_Nat (N / 10);
end if;
Write_Info_Char (Character'Val (N mod 10 + Character'Pos ('0')));
end Write_Info_Nat;
--------------------
-- Write_Info_Str --
--------------------
procedure Write_Info_Str (Val : String) is
begin
Info_Buffer (Info_Buffer_Len + 1 .. Info_Buffer_Len + Val'Length)
:= Val;
Info_Buffer_Len := Info_Buffer_Len + Val'Length;
Info_Buffer_Col := Info_Buffer_Col + Val'Length;
end Write_Info_Str;
--------------------
-- Write_Info_Tab --
--------------------
procedure Write_Info_Tab (Col : Positive) is
Next_Tab : Positive;
begin
if Col <= Info_Buffer_Col then
Write_Info_Str (" ");
else
loop
Next_Tab := 8 * ((Info_Buffer_Col - 1) / 8) + 8 + 1;
exit when Col < Next_Tab;
Write_Info_Char (ASCII.HT);
Info_Buffer_Col := Next_Tab;
end loop;
while Info_Buffer_Col < Col loop
Write_Info_Char (' ');
end loop;
end if;
end Write_Info_Tab;
--------------------------
-- Write_Info_Terminate --
--------------------------
procedure Write_Info_Terminate is
begin
-- Delete any trailing blanks
while Info_Buffer_Len > 0
and then Info_Buffer (Info_Buffer_Len) = ' '
loop
Info_Buffer_Len := Info_Buffer_Len - 1;
end loop;
-- Write_Library_Info adds the EOL
Write_Library_Info (Info_Buffer (1 .. Info_Buffer_Len));
Info_Buffer_Len := 0;
Info_Buffer_Col := 1;
end Write_Info_Terminate;
end Lib.Util;
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