ac36caab6b
2006-10-31 Vincent Celier <celier@adacore.com>
* gnatls.adb: Take into account GPR_PROJECT_PATH, when it is defined,
instead of ADA_PROJECT_PATH, for the project path.
(Gnatls): When displaying the project path directories, use host dir
specs.
* prj-ext.adb (Prj.Ext elaboration): On VMS, only expand relative path
names in the project path, as absolute paths may correspond to
multi-valued VMS logical names.
From-SVN: r118278
299 lines
10 KiB
Ada
299 lines
10 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- P R J . E X T --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2000-2006, 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 Output; use Output;
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with Osint; use Osint;
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with Sdefault;
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with GNAT.HTable;
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package body Prj.Ext is
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Gpr_Project_Path : constant String := "GPR_PROJECT_PATH";
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Ada_Project_Path : constant String := "ADA_PROJECT_PATH";
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-- Name of the env. variables that contain path name(s) of directories
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-- where project files may reside. GPR_PROJECT_PATH has precedence over
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-- ADA_PROJECT_PATH.
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Gpr_Prj_Path : constant String_Access := Getenv (Gpr_Project_Path);
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Ada_Prj_Path : constant String_Access := Getenv (Ada_Project_Path);
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-- The path name(s) of directories where project files may reside.
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-- May be empty.
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No_Project_Default_Dir : constant String := "-";
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Current_Project_Path : String_Access;
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-- The project path. Initialized during elaboration of package Contains at
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-- least the current working directory.
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package Htable is new GNAT.HTable.Simple_HTable
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(Header_Num => Header_Num,
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Element => Name_Id,
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No_Element => No_Name,
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Key => Name_Id,
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Hash => Hash,
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Equal => "=");
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-- External references are stored in this hash table, either by procedure
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-- Add (directly or through a call to function Check) or by function
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-- Value_Of when an environment variable is found non empty. Value_Of
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-- first for external reference in this table, before checking the
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-- environment. Htable is emptied (reset) by procedure Reset.
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---------
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-- Add --
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---------
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procedure Add
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(External_Name : String;
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Value : String)
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is
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The_Key : Name_Id;
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The_Value : Name_Id;
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begin
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Name_Len := Value'Length;
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Name_Buffer (1 .. Name_Len) := Value;
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The_Value := Name_Find;
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Name_Len := External_Name'Length;
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Name_Buffer (1 .. Name_Len) := External_Name;
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Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
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The_Key := Name_Find;
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Htable.Set (The_Key, The_Value);
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end Add;
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-----------
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-- Check --
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-----------
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function Check (Declaration : String) return Boolean is
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begin
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for Equal_Pos in Declaration'Range loop
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if Declaration (Equal_Pos) = '=' then
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exit when Equal_Pos = Declaration'First;
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exit when Equal_Pos = Declaration'Last;
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Add
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(External_Name =>
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Declaration (Declaration'First .. Equal_Pos - 1),
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Value =>
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Declaration (Equal_Pos + 1 .. Declaration'Last));
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return True;
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end if;
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end loop;
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return False;
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end Check;
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------------------
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-- Project_Path --
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------------------
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function Project_Path return String is
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begin
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return Current_Project_Path.all;
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end Project_Path;
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-----------
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-- Reset --
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-----------
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procedure Reset is
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begin
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Htable.Reset;
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end Reset;
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----------------------
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-- Set_Project_Path --
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----------------------
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procedure Set_Project_Path (New_Path : String) is
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begin
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Free (Current_Project_Path);
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Current_Project_Path := new String'(New_Path);
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end Set_Project_Path;
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--------------
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-- Value_Of --
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--------------
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function Value_Of
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(External_Name : Name_Id;
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With_Default : Name_Id := No_Name)
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return Name_Id
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is
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The_Value : Name_Id;
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Name : String := Get_Name_String (External_Name);
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begin
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Canonical_Case_File_Name (Name);
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Name_Len := Name'Length;
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Name_Buffer (1 .. Name_Len) := Name;
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The_Value := Htable.Get (Name_Find);
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if The_Value /= No_Name then
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return The_Value;
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end if;
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-- Find if it is an environment, if it is, put value in the hash table
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declare
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Env_Value : String_Access := Getenv (Name);
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begin
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if Env_Value /= null and then Env_Value'Length > 0 then
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Name_Len := Env_Value'Length;
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Name_Buffer (1 .. Name_Len) := Env_Value.all;
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The_Value := Name_Find;
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Htable.Set (External_Name, The_Value);
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Free (Env_Value);
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return The_Value;
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else
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Free (Env_Value);
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return With_Default;
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end if;
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end;
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end Value_Of;
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begin
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-- Initialize Current_Project_Path during package elaboration
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declare
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Add_Default_Dir : Boolean := True;
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First : Positive;
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Last : Positive;
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New_Len : Positive;
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New_Last : Positive;
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Prj_Path : String_Access := Gpr_Prj_Path;
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begin
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if Gpr_Prj_Path.all /= "" then
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-- Warn if both environment variables are defined
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if Ada_Prj_Path.all /= "" then
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Write_Line ("Warning: ADA_PROJECT_PATH is not taken into account");
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Write_Line (" when GPR_PROJECT_PATH is defined");
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end if;
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else
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Prj_Path := Ada_Prj_Path;
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end if;
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-- The current directory is always first
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Name_Len := 1;
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Name_Buffer (Name_Len) := '.';
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-- If environment variable is defined and not empty, add its content
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if Prj_Path.all /= "" then
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Name_Len := Name_Len + 1;
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Name_Buffer (Name_Len) := Path_Separator;
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Add_Str_To_Name_Buffer (Prj_Path.all);
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-- Scan the directory path to see if "-" is one of the directories.
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-- Remove each occurence of "-" and set Add_Default_Dir to False.
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-- Also resolve relative paths and symbolic links.
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First := 3;
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loop
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while First <= Name_Len
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and then (Name_Buffer (First) = Path_Separator)
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loop
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First := First + 1;
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end loop;
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exit when First > Name_Len;
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Last := First;
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while Last < Name_Len
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and then Name_Buffer (Last + 1) /= Path_Separator
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loop
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Last := Last + 1;
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end loop;
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-- If the directory is "-", set Add_Default_Dir to False and
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-- remove from path.
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if Name_Buffer (First .. Last) = No_Project_Default_Dir then
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Add_Default_Dir := False;
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for J in Last + 1 .. Name_Len loop
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Name_Buffer (J - No_Project_Default_Dir'Length - 1) :=
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Name_Buffer (J);
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end loop;
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Name_Len := Name_Len - No_Project_Default_Dir'Length - 1;
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elsif not Hostparm.OpenVMS
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or else not Is_Absolute_Path (Name_Buffer (First .. Last))
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then
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-- On VMS, only expand relative path names, as absolute paths
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-- may correspond to multi-valued VMS logical names.
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declare
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New_Dir : constant String :=
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Normalize_Pathname (Name_Buffer (First .. Last));
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begin
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-- If the absolute path was resolved and is different from
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-- the original, replace original with the resolved path.
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if New_Dir /= Name_Buffer (First .. Last)
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and then New_Dir'Length /= 0
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then
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New_Len := Name_Len + New_Dir'Length - (Last - First + 1);
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New_Last := First + New_Dir'Length - 1;
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Name_Buffer (New_Last + 1 .. New_Len) :=
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Name_Buffer (Last + 1 .. Name_Len);
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Name_Buffer (First .. New_Last) := New_Dir;
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Name_Len := New_Len;
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Last := New_Last;
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end if;
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end;
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end if;
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First := Last + 1;
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end loop;
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end if;
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-- Set the initial value of Current_Project_Path
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if Add_Default_Dir then
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Current_Project_Path :=
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new String'(Name_Buffer (1 .. Name_Len) & Path_Separator &
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Sdefault.Search_Dir_Prefix.all & ".." &
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Directory_Separator & ".." & Directory_Separator &
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".." & Directory_Separator & "gnat");
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else
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Current_Project_Path := new String'(Name_Buffer (1 .. Name_Len));
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end if;
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end;
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end Prj.Ext;
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