------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- P R J . E X T -- -- -- -- B o d y -- -- -- -- Copyright (C) 2000-2009, 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 3, 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 COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with System.OS_Lib; use System.OS_Lib; with Hostparm; with Makeutl; use Makeutl; with Opt; with Osint; use Osint; with Prj.Tree; use Prj.Tree; with Sdefault; package body Prj.Ext is No_Project_Default_Dir : constant String := "-"; -- Indicator in the project path to indicate that the default search -- directories should not be added to the path Uninitialized_Prefix : constant String := '#' & Path_Separator; -- Prefix to indicate that the project path has not been initilized yet. -- Must be two characters long procedure Initialize_Project_Path (Tree : Prj.Tree.Project_Node_Tree_Ref); -- Initialize Current_Project_Path --------- -- Add -- --------- procedure Add (Tree : Prj.Tree.Project_Node_Tree_Ref; External_Name : String; Value : String) is The_Key : Name_Id; The_Value : Name_Id; begin Name_Len := Value'Length; Name_Buffer (1 .. Name_Len) := Value; The_Value := Name_Find; Name_Len := External_Name'Length; Name_Buffer (1 .. Name_Len) := External_Name; Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len)); The_Key := Name_Find; Name_To_Name_HTable.Set (Tree.External_References, The_Key, The_Value); end Add; ---------------------------------- -- Add_Search_Project_Directory -- ---------------------------------- procedure Add_Search_Project_Directory (Tree : Prj.Tree.Project_Node_Tree_Ref; Path : String) is Tmp : String_Access; begin if Tree.Project_Path = null then Tree.Project_Path := new String'(Uninitialized_Prefix & Path); else Tmp := Tree.Project_Path; Tree.Project_Path := new String'(Tmp.all & Path_Separator & Path); Free (Tmp); end if; end Add_Search_Project_Directory; ----------- -- Check -- ----------- function Check (Tree : Prj.Tree.Project_Node_Tree_Ref; Declaration : String) return Boolean is begin for Equal_Pos in Declaration'Range loop if Declaration (Equal_Pos) = '=' then exit when Equal_Pos = Declaration'First; Add (Tree => Tree, External_Name => Declaration (Declaration'First .. Equal_Pos - 1), Value => Declaration (Equal_Pos + 1 .. Declaration'Last)); return True; end if; end loop; return False; end Check; ----------------------------- -- Initialize_Project_Path -- ----------------------------- procedure Initialize_Project_Path (Tree : Prj.Tree.Project_Node_Tree_Ref) is Add_Default_Dir : Boolean := True; First : Positive; Last : Positive; New_Len : Positive; New_Last : Positive; Ada_Project_Path : constant String := "ADA_PROJECT_PATH"; Gpr_Project_Path : constant String := "GPR_PROJECT_PATH"; -- Name of alternate env. variable that contain path name(s) of -- directories where project files may reside. GPR_PROJECT_PATH has -- precedence over ADA_PROJECT_PATH. Gpr_Prj_Path : String_Access := Getenv (Gpr_Project_Path); Ada_Prj_Path : String_Access := Getenv (Ada_Project_Path); -- The path name(s) of directories where project files may reside. -- May be empty. begin -- The current directory is always first in the search path. Since the -- Project_Path currently starts with '#:' as a sign that it isn't -- initialized, we simply replace '#' with '.' if Tree.Project_Path = null then Tree.Project_Path := new String'('.' & Path_Separator); else Tree.Project_Path (Tree.Project_Path'First) := '.'; end if; -- Then the reset of the project path (if any) currently contains the -- directories added through Add_Search_Project_Directory -- If environment variables are defined and not empty, add their content if Gpr_Prj_Path.all /= "" then Add_Search_Project_Directory (Tree, Gpr_Prj_Path.all); end if; Free (Gpr_Prj_Path); if Ada_Prj_Path.all /= "" then Add_Search_Project_Directory (Tree, Ada_Prj_Path.all); end if; Free (Ada_Prj_Path); -- Copy to Name_Buffer, since we will need to manipulate the path Name_Len := Tree.Project_Path'Length; Name_Buffer (1 .. Name_Len) := Tree.Project_Path.all; -- Scan the directory path to see if "-" is one of the directories. -- Remove each occurrence of "-" and set Add_Default_Dir to False. -- Also resolve relative paths and symbolic links. First := 3; loop while First <= Name_Len and then (Name_Buffer (First) = Path_Separator) loop First := First + 1; end loop; exit when First > Name_Len; Last := First; while Last < Name_Len and then Name_Buffer (Last + 1) /= Path_Separator loop Last := Last + 1; end loop; -- If the directory is "-", set Add_Default_Dir to False and -- remove from path. if Name_Buffer (First .. Last) = No_Project_Default_Dir then Add_Default_Dir := False; for J in Last + 1 .. Name_Len loop Name_Buffer (J - No_Project_Default_Dir'Length - 1) := Name_Buffer (J); end loop; Name_Len := Name_Len - No_Project_Default_Dir'Length - 1; -- After removing the '-', go back one character to get the next -- directory correctly. Last := Last - 1; elsif not Hostparm.OpenVMS or else not Is_Absolute_Path (Name_Buffer (First .. Last)) then -- On VMS, only expand relative path names, as absolute paths -- may correspond to multi-valued VMS logical names. declare New_Dir : constant String := Normalize_Pathname (Name_Buffer (First .. Last), Resolve_Links => Opt.Follow_Links_For_Dirs); begin -- If the absolute path was resolved and is different from -- the original, replace original with the resolved path. if New_Dir /= Name_Buffer (First .. Last) and then New_Dir'Length /= 0 then New_Len := Name_Len + New_Dir'Length - (Last - First + 1); New_Last := First + New_Dir'Length - 1; Name_Buffer (New_Last + 1 .. New_Len) := Name_Buffer (Last + 1 .. Name_Len); Name_Buffer (First .. New_Last) := New_Dir; Name_Len := New_Len; Last := New_Last; end if; end; end if; First := Last + 1; end loop; Free (Tree.Project_Path); -- Set the initial value of Current_Project_Path if Add_Default_Dir then declare Prefix : String_Ptr := Sdefault.Search_Dir_Prefix; begin if Prefix = null then Prefix := new String'(Executable_Prefix_Path); if Prefix.all /= "" then Add_Str_To_Name_Buffer (Path_Separator & Prefix.all & "share" & Directory_Separator & "gpr"); Add_Str_To_Name_Buffer (Path_Separator & Prefix.all & Directory_Separator & "lib" & Directory_Separator & "gnat"); end if; else Tree.Project_Path := new String'(Name_Buffer (1 .. Name_Len) & Path_Separator & Prefix.all & ".." & Directory_Separator & ".." & Directory_Separator & ".." & Directory_Separator & "gnat"); end if; Free (Prefix); end; end if; if Tree.Project_Path = null then Tree.Project_Path := new String'(Name_Buffer (1 .. Name_Len)); end if; end Initialize_Project_Path; ------------------ -- Project_Path -- ------------------ function Project_Path (Tree : Project_Node_Tree_Ref) return String is begin if Tree.Project_Path = null or else Tree.Project_Path (Tree.Project_Path'First) = '#' then Initialize_Project_Path (Tree); end if; return Tree.Project_Path.all; end Project_Path; ----------- -- Reset -- ----------- procedure Reset (Tree : Prj.Tree.Project_Node_Tree_Ref) is begin Name_To_Name_HTable.Reset (Tree.External_References); end Reset; ---------------------- -- Set_Project_Path -- ---------------------- procedure Set_Project_Path (Tree : Project_Node_Tree_Ref; New_Path : String) is begin Free (Tree.Project_Path); Tree.Project_Path := new String'(New_Path); end Set_Project_Path; -------------- -- Value_Of -- -------------- function Value_Of (Tree : Prj.Tree.Project_Node_Tree_Ref; External_Name : Name_Id; With_Default : Name_Id := No_Name) return Name_Id is The_Value : Name_Id; Name : String := Get_Name_String (External_Name); begin Canonical_Case_File_Name (Name); Name_Len := Name'Length; Name_Buffer (1 .. Name_Len) := Name; The_Value := Name_To_Name_HTable.Get (Tree.External_References, Name_Find); if The_Value /= No_Name then return The_Value; end if; -- Find if it is an environment, if it is, put value in the hash table declare Env_Value : String_Access := Getenv (Name); begin if Env_Value /= null and then Env_Value'Length > 0 then Name_Len := Env_Value'Length; Name_Buffer (1 .. Name_Len) := Env_Value.all; The_Value := Name_Find; Name_To_Name_HTable.Set (Tree.External_References, External_Name, The_Value); Free (Env_Value); return The_Value; else Free (Env_Value); return With_Default; end if; end; end Value_Of; end Prj.Ext;