218 lines
6.9 KiB
Ada
218 lines
6.9 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- L I B . U T I L --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Hostparm;
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with Namet; use Namet;
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with Osint.C; use Osint.C;
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package body Lib.Util is
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Max_Line : constant Natural := 2 * Hostparm.Max_Name_Length + 64;
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Max_Buffer : constant Natural := 1000 * Max_Line;
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Info_Buffer : String (1 .. Max_Buffer);
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-- Info_Buffer used to prepare lines of library output
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Info_Buffer_Len : Natural := 0;
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-- Number of characters stored in Info_Buffer
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Info_Buffer_Col : Natural := 1;
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-- Column number of next character to be written.
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-- Can be different from Info_Buffer_Len + 1
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-- because of tab characters written by Write_Info_Tab.
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---------------------
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-- Write_Info_Char --
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---------------------
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procedure Write_Info_Char (C : Character) is
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begin
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Info_Buffer_Len := Info_Buffer_Len + 1;
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Info_Buffer (Info_Buffer_Len) := C;
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Info_Buffer_Col := Info_Buffer_Col + 1;
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end Write_Info_Char;
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--------------------------
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-- Write_Info_Char_Code --
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--------------------------
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procedure Write_Info_Char_Code (Code : Char_Code) is
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procedure Write_Info_Hex_Byte (J : Natural);
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-- Write single hex digit
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procedure Write_Info_Hex_Byte (J : Natural) is
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Hexd : constant String := "0123456789abcdef";
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begin
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Write_Info_Char (Hexd (J / 16 + 1));
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Write_Info_Char (Hexd (J mod 16 + 1));
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end Write_Info_Hex_Byte;
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-- Start of processing for Write_Info_Char_Code
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begin
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if Code in 16#00# .. 16#7F# then
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Write_Info_Char (Character'Val (Code));
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elsif Code in 16#80# .. 16#FF# then
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Write_Info_Char ('U');
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Write_Info_Hex_Byte (Natural (Code));
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else
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Write_Info_Char ('W');
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Write_Info_Hex_Byte (Natural (Code / 256));
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Write_Info_Hex_Byte (Natural (Code mod 256));
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end if;
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end Write_Info_Char_Code;
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--------------------
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-- Write_Info_Col --
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--------------------
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function Write_Info_Col return Positive is
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begin
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return Info_Buffer_Col;
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end Write_Info_Col;
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--------------------
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-- Write_Info_EOL --
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--------------------
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procedure Write_Info_EOL is
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begin
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if Hostparm.OpenVMS
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or else Info_Buffer_Len + Max_Line + 1 > Max_Buffer
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then
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Write_Info_Terminate;
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else
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-- Delete any trailing blanks
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while Info_Buffer_Len > 0
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and then Info_Buffer (Info_Buffer_Len) = ' '
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loop
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Info_Buffer_Len := Info_Buffer_Len - 1;
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end loop;
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Info_Buffer_Len := Info_Buffer_Len + 1;
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Info_Buffer (Info_Buffer_Len) := ASCII.LF;
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Info_Buffer_Col := 1;
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end if;
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end Write_Info_EOL;
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-------------------------
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-- Write_Info_Initiate --
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-------------------------
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procedure Write_Info_Initiate (Key : Character) renames Write_Info_Char;
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---------------------
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-- Write_Info_Name --
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---------------------
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procedure Write_Info_Name (Name : Name_Id) is
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begin
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Get_Name_String (Name);
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Info_Buffer (Info_Buffer_Len + 1 .. Info_Buffer_Len + Name_Len) :=
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Name_Buffer (1 .. Name_Len);
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Info_Buffer_Len := Info_Buffer_Len + Name_Len;
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Info_Buffer_Col := Info_Buffer_Col + Name_Len;
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end Write_Info_Name;
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--------------------
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-- Write_Info_Nat --
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--------------------
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procedure Write_Info_Nat (N : Nat) is
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begin
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if N > 9 then
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Write_Info_Nat (N / 10);
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end if;
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Write_Info_Char (Character'Val (N mod 10 + Character'Pos ('0')));
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end Write_Info_Nat;
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--------------------
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-- Write_Info_Str --
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--------------------
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procedure Write_Info_Str (Val : String) is
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begin
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Info_Buffer (Info_Buffer_Len + 1 .. Info_Buffer_Len + Val'Length)
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:= Val;
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Info_Buffer_Len := Info_Buffer_Len + Val'Length;
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Info_Buffer_Col := Info_Buffer_Col + Val'Length;
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end Write_Info_Str;
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--------------------
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-- Write_Info_Tab --
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--------------------
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procedure Write_Info_Tab (Col : Positive) is
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Next_Tab : Positive;
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begin
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if Col <= Info_Buffer_Col then
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Write_Info_Str (" ");
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else
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loop
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Next_Tab := 8 * ((Info_Buffer_Col - 1) / 8) + 8 + 1;
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exit when Col < Next_Tab;
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Write_Info_Char (ASCII.HT);
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Info_Buffer_Col := Next_Tab;
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end loop;
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while Info_Buffer_Col < Col loop
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Write_Info_Char (' ');
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end loop;
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end if;
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end Write_Info_Tab;
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--------------------------
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-- Write_Info_Terminate --
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--------------------------
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procedure Write_Info_Terminate is
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begin
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-- Delete any trailing blanks
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while Info_Buffer_Len > 0
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and then Info_Buffer (Info_Buffer_Len) = ' '
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loop
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Info_Buffer_Len := Info_Buffer_Len - 1;
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end loop;
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-- Write_Library_Info adds the EOL
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Write_Library_Info (Info_Buffer (1 .. Info_Buffer_Len));
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Info_Buffer_Len := 0;
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Info_Buffer_Col := 1;
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end Write_Info_Terminate;
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end Lib.Util;
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