-- --
-- B o d y --
-- --
--- Copyright (C) 2002-2003, Free Software Foundation, Inc. --
+-- Copyright (C) 2002-2011, 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- --
+-- 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 COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- 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 Ada.Text_IO; use Ada.Text_IO;
-
with Csets;
with Err_Vars; use Err_Vars;
with Errutil;
-with Gnatvsn;
with Namet; use Namet;
with Opt;
with Osint; use Osint;
with Sinput.C;
with Snames;
with Stringt; use Stringt;
+with Switch; use Switch;
with Types; use Types;
+with Ada.Text_IO; use Ada.Text_IO;
+
+with GNAT.Case_Util; use GNAT.Case_Util;
with GNAT.Command_Line;
-with GNAT.OS_Lib; use GNAT.OS_Lib;
+with GNAT.Directory_Operations; use GNAT.Directory_Operations;
+
+with System.OS_Lib; use System.OS_Lib;
package body GPrep is
-- Argument Line Data --
------------------------
- Infile_Name : String_Access;
- Outfile_Name : String_Access;
- Deffile_Name : String_Access;
+ Unix_Line_Terminators : Boolean := False;
+ -- Set to True with option -T
+
+ type String_Array is array (Boolean) of String_Access;
+ Yes_No : constant String_Array :=
+ (False => new String'("YES"),
+ True => new String'("NO"));
+
+ Infile_Name : Name_Id := No_Name;
+ Outfile_Name : Name_Id := No_Name;
+ Deffile_Name : Name_Id := No_Name;
+
+ Output_Directory : Name_Id := No_Name;
+ -- Used when the specified output is an existing directory
- Source_Ref_Pragma : Boolean := False; -- Set if -r switch set
- -- Record command line options
+ Input_Directory : Name_Id := No_Name;
+ -- Used when the specified input and output are existing directories
+
+ Source_Ref_Pragma : Boolean := False;
+ -- Record command line options (set if -r switch set)
Text_Outfile : aliased Ada.Text_IO.File_Type;
- Outfile : File_Access := Text_Outfile'Access;
+ Outfile : constant File_Access := Text_Outfile'Access;
+
+ File_Name_Buffer_Initial_Size : constant := 50;
+ File_Name_Buffer : String_Access :=
+ new String (1 .. File_Name_Buffer_Initial_Size);
+ -- A buffer to build output file names from input file names
-----------------
-- Subprograms --
Errutil.Style);
-- The scanner for the preprocessor
+ function Is_ASCII_Letter (C : Character) return Boolean;
+ -- True if C is in 'a' .. 'z' or in 'A' .. 'Z'
+
+ procedure Double_File_Name_Buffer;
+ -- Double the size of the file name buffer
+
+ procedure Preprocess_Infile_Name;
+ -- When the specified output is a directory, preprocess the infile name
+ -- for symbol substitution, to get the output file name.
+
+ procedure Process_Files;
+ -- Process the single input file or all the files in the directory tree
+ -- rooted at the input directory.
+
procedure Process_Command_Line_Symbol_Definition (S : String);
- -- Process a -D switch on ther command line
+ -- Process a -D switch on the command line
procedure Put_Char_To_Outfile (C : Character);
- -- Output one character to the output file.
- -- Used to initialize the preprocessor..
+ -- Output one character to the output file. Used to initialize the
+ -- preprocessor.
procedure New_EOL_To_Outfile;
- -- Output a new line to the output file.
- -- used to initialize the preprocessor.
+ -- Output a new line to the output file. Used to initialize the
+ -- preprocessor.
procedure Scan_Command_Line;
-- Scan the switches and the file names
procedure Display_Copyright is
begin
if not Copyright_Displayed then
- Write_Line ("GNAT Preprocessor " &
- Gnatvsn.Gnat_Version_String &
- " Copyright 1996-2003 Free Software Foundation, Inc.");
+ Display_Version ("GNAT Preprocessor", "1996");
Copyright_Displayed := True;
end if;
end Display_Copyright;
+ -----------------------------
+ -- Double_File_Name_Buffer --
+ -----------------------------
+
+ procedure Double_File_Name_Buffer is
+ New_Buffer : constant String_Access :=
+ new String (1 .. 2 * File_Name_Buffer'Length);
+ begin
+ New_Buffer (File_Name_Buffer'Range) := File_Name_Buffer.all;
+ Free (File_Name_Buffer);
+ File_Name_Buffer := New_Buffer;
+ end Double_File_Name_Buffer;
+
--------------
-- Gnatprep --
--------------
procedure Gnatprep is
- Infile : Source_File_Index;
-
begin
-- Do some initializations (order is important here!)
Csets.Initialize;
- Namet.Initialize;
Snames.Initialize;
Stringt.Initialize;
+ Prep.Initialize;
-- Initialize the preprocessor
- Prep.Initialize
+ Prep.Setup_Hooks
(Error_Msg => Errutil.Error_Msg'Access,
Scan => Scanner.Scan'Access,
Set_Ignore_Errors => Errutil.Set_Ignore_Errors'Access,
-- Test we had all the arguments needed
- if Infile_Name = null then
+ if Infile_Name = No_Name then
+
-- No input file specified, just output the usage and exit
Usage;
return;
- elsif Outfile_Name = null then
+
+ elsif Outfile_Name = No_Name then
+
-- No output file specified, just output the usage and exit
Usage;
return;
end if;
- -- If a pragma Source_File_Name, we need to keep line numbers.
- -- So, if the deleted lines are not put as comment, we must output them
- -- as blank lines.
+ -- If a pragma Source_File_Name, we need to keep line numbers. So, if
+ -- the deleted lines are not put as comment, we must output them as
+ -- blank lines.
if Source_Ref_Pragma and (not Opt.Comment_Deleted_Lines) then
Opt.Blank_Deleted_Lines := True;
-- If we have a definition file, parse it
- if Deffile_Name /= null then
+ if Deffile_Name /= No_Name then
declare
Deffile : Source_File_Index;
begin
Errutil.Initialize;
- Deffile := Sinput.C.Load_File (Deffile_Name.all);
+ Deffile := Sinput.C.Load_File (Get_Name_String (Deffile_Name));
-- Set Main_Source_File to the definition file for the benefit of
-- Errutil.Finalize.
Sinput.Main_Source_File := Deffile;
if Deffile = No_Source_File then
- Fail ("unable to find definition file """,
- Deffile_Name.all,
- """");
+ Fail ("unable to find definition file """
+ & Get_Name_String (Deffile_Name)
+ & """");
end if;
- Scanner.Initialize_Scanner (No_Unit, Deffile);
+ Scanner.Initialize_Scanner (Deffile);
Prep.Parse_Def_File;
end;
end if;
- -- If there are errors in the definition file, output these errors
- -- and exit.
+ -- If there are errors in the definition file, output them and exit
if Total_Errors_Detected > 0 then
Errutil.Finalize (Source_Type => "definition");
- Fail ("errors in definition file """, Deffile_Name.all, """");
+ Fail ("errors in definition file """
+ & Get_Name_String (Deffile_Name)
+ & """");
end if;
-- If -s switch was specified, print a sorted list of symbol names and
Prep.List_Symbols (Foreword => "");
end if;
- -- Load the input file
-
- Infile := Sinput.C.Load_File (Infile_Name.all);
-
- if Infile = No_Source_File then
- Fail ("unable to find input file """, Infile_Name.all, """");
- end if;
+ Output_Directory := No_Name;
+ Input_Directory := No_Name;
- -- Set Main_Source_File to the input file for the benefit of
- -- Errutil.Finalize.
+ -- Check if the specified output is an existing directory
- Sinput.Main_Source_File := Infile;
+ if Is_Directory (Get_Name_String (Outfile_Name)) then
+ Output_Directory := Outfile_Name;
- Scanner.Initialize_Scanner (No_Unit, Infile);
+ -- As the output is an existing directory, check if the input too
+ -- is a directory.
- -- If an output file were specified, create it; fails if this did not
- -- work.
-
- if Outfile_Name /= null then
- begin
- Create (Text_Outfile, Out_File, Outfile_Name.all);
-
- exception
- when others =>
- Fail
- ("unable to create output file """, Outfile_Name.all, """");
- end;
- end if;
-
- -- Output the SFN pragma if asked to
-
- if Source_Ref_Pragma then
- Put_Line (Outfile.all, "pragma Source_Reference (1, """ &
- Get_Name_String (Sinput.File_Name (Infile)) &
- """);");
- end if;
-
- -- Preprocess the input file
-
- Prep.Preprocess;
-
- -- In verbose mode, if there is no error, report it
-
- if Opt.Verbose_Mode and then Err_Vars.Total_Errors_Detected = 0 then
- Errutil.Finalize (Source_Type => "input");
+ if Is_Directory (Get_Name_String (Infile_Name)) then
+ Input_Directory := Infile_Name;
+ end if;
end if;
- -- If we had some errors, delete the output file, and report the errors,
+ -- And process the single input or the files in the directory tree
+ -- rooted at the input directory.
- if Err_Vars.Total_Errors_Detected > 0 then
- if Outfile /= Standard_Output then
- Delete (Text_Outfile);
- end if;
-
- Errutil.Finalize (Source_Type => "input");
+ Process_Files;
+ end Gnatprep;
- -- otherwise, close the output file, and we are done.
+ ---------------------
+ -- Is_ASCII_Letter --
+ ---------------------
- elsif Outfile /= Standard_Output then
- Close (Text_Outfile);
- end if;
- end Gnatprep;
+ function Is_ASCII_Letter (C : Character) return Boolean is
+ begin
+ return C in 'A' .. 'Z' or else C in 'a' .. 'z';
+ end Is_ASCII_Letter;
------------------------
-- New_EOL_To_Outfile --
null;
end Post_Scan;
+ ----------------------------
+ -- Preprocess_Infile_Name --
+ ----------------------------
+
+ procedure Preprocess_Infile_Name is
+ Len : Natural;
+ First : Positive;
+ Last : Natural;
+ Symbol : Name_Id;
+ Data : Symbol_Data;
+
+ begin
+ -- Initialize the buffer with the name of the input file
+
+ Get_Name_String (Infile_Name);
+ Len := Name_Len;
+
+ while File_Name_Buffer'Length < Len loop
+ Double_File_Name_Buffer;
+ end loop;
+
+ File_Name_Buffer (1 .. Len) := Name_Buffer (1 .. Len);
+
+ -- Look for possible symbols in the file name
+
+ First := 1;
+ while First < Len loop
+
+ -- A symbol starts with a dollar sign followed by a letter
+
+ if File_Name_Buffer (First) = '$' and then
+ Is_ASCII_Letter (File_Name_Buffer (First + 1))
+ then
+ Last := First + 1;
+
+ -- Find the last letter of the symbol
+
+ while Last < Len and then
+ Is_ASCII_Letter (File_Name_Buffer (Last + 1))
+ loop
+ Last := Last + 1;
+ end loop;
+
+ -- Get the symbol name id
+
+ Name_Len := Last - First;
+ Name_Buffer (1 .. Name_Len) :=
+ File_Name_Buffer (First + 1 .. Last);
+ To_Lower (Name_Buffer (1 .. Name_Len));
+ Symbol := Name_Find;
+
+ -- And look for this symbol name in the symbol table
+
+ for Index in 1 .. Symbol_Table.Last (Mapping) loop
+ Data := Mapping.Table (Index);
+
+ if Data.Symbol = Symbol then
+
+ -- We found the symbol. If its value is not a string,
+ -- replace the symbol in the file name with the value of
+ -- the symbol.
+
+ if not Data.Is_A_String then
+ String_To_Name_Buffer (Data.Value);
+
+ declare
+ Sym_Len : constant Positive := Last - First + 1;
+ Offset : constant Integer := Name_Len - Sym_Len;
+ New_Len : constant Natural := Len + Offset;
+
+ begin
+ while New_Len > File_Name_Buffer'Length loop
+ Double_File_Name_Buffer;
+ end loop;
+
+ File_Name_Buffer (Last + 1 + Offset .. New_Len) :=
+ File_Name_Buffer (Last + 1 .. Len);
+ Len := New_Len;
+ Last := Last + Offset;
+ File_Name_Buffer (First .. Last) :=
+ Name_Buffer (1 .. Name_Len);
+ end;
+ end if;
+
+ exit;
+ end if;
+ end loop;
+
+ -- Skip over the symbol name or its value: we are not checking
+ -- for another symbol name in the value.
+
+ First := Last + 1;
+
+ else
+ First := First + 1;
+ end if;
+ end loop;
+
+ -- We now have the output file name in the buffer. Get the output
+ -- path and put it in Outfile_Name.
+
+ Get_Name_String (Output_Directory);
+ Add_Char_To_Name_Buffer (Directory_Separator);
+ Add_Str_To_Name_Buffer (File_Name_Buffer (1 .. Len));
+ Outfile_Name := Name_Find;
+ end Preprocess_Infile_Name;
+
--------------------------------------------
-- Process_Command_Line_Symbol_Definition --
--------------------------------------------
Symbol := Index_Of (Data.Symbol);
- -- If symbol does not alrady exist, create a new entry in the mapping
+ -- If symbol does not already exist, create a new entry in the mapping
-- table.
if Symbol = No_Symbol then
Mapping.Table (Symbol) := Data;
end Process_Command_Line_Symbol_Definition;
+ -------------------
+ -- Process_Files --
+ -------------------
+
+ procedure Process_Files is
+
+ procedure Process_One_File;
+ -- Process input file Infile_Name and put the result in file
+ -- Outfile_Name.
+
+ procedure Recursive_Process (In_Dir : String; Out_Dir : String);
+ -- Process recursively files in In_Dir. Results go to Out_Dir
+
+ ----------------------
+ -- Process_One_File --
+ ----------------------
+
+ procedure Process_One_File is
+ Infile : Source_File_Index;
+
+ Modified : Boolean;
+ pragma Warnings (Off, Modified);
+
+ begin
+ -- Create the output file (fails if this does not work)
+
+ begin
+ Create
+ (File => Text_Outfile,
+ Mode => Out_File,
+ Name => Get_Name_String (Outfile_Name),
+ Form => "Text_Translation=" &
+ Yes_No (Unix_Line_Terminators).all);
+
+ exception
+ when others =>
+ Fail
+ ("unable to create output file """
+ & Get_Name_String (Outfile_Name)
+ & """");
+ end;
+
+ -- Load the input file
+
+ Infile := Sinput.C.Load_File (Get_Name_String (Infile_Name));
+
+ if Infile = No_Source_File then
+ Fail ("unable to find input file """
+ & Get_Name_String (Infile_Name)
+ & """");
+ end if;
+
+ -- Set Main_Source_File to the input file for the benefit of
+ -- Errutil.Finalize.
+
+ Sinput.Main_Source_File := Infile;
+
+ Scanner.Initialize_Scanner (Infile);
+
+ -- Output the pragma Source_Reference if asked to
+
+ if Source_Ref_Pragma then
+ Put_Line
+ (Outfile.all,
+ "pragma Source_Reference (1, """ &
+ Get_Name_String (Sinput.Full_File_Name (Infile)) & """);");
+ end if;
+
+ -- Preprocess the input file
+
+ Prep.Preprocess (Modified);
+
+ -- In verbose mode, if there is no error, report it
+
+ if Opt.Verbose_Mode and then Err_Vars.Total_Errors_Detected = 0 then
+ Errutil.Finalize (Source_Type => "input");
+ end if;
+
+ -- If we had some errors, delete the output file, and report them
+
+ if Err_Vars.Total_Errors_Detected > 0 then
+ if Outfile /= Standard_Output then
+ Delete (Text_Outfile);
+ end if;
+
+ Errutil.Finalize (Source_Type => "input");
+
+ OS_Exit (0);
+
+ -- Otherwise, close the output file, and we are done
+
+ elsif Outfile /= Standard_Output then
+ Close (Text_Outfile);
+ end if;
+ end Process_One_File;
+
+ -----------------------
+ -- Recursive_Process --
+ -----------------------
+
+ procedure Recursive_Process (In_Dir : String; Out_Dir : String) is
+ Dir_In : Dir_Type;
+ Name : String (1 .. 255);
+ Last : Natural;
+ In_Dir_Name : Name_Id;
+ Out_Dir_Name : Name_Id;
+
+ procedure Set_Directory_Names;
+ -- Establish or reestablish the current input and output directories
+
+ -------------------------
+ -- Set_Directory_Names --
+ -------------------------
+
+ procedure Set_Directory_Names is
+ begin
+ Input_Directory := In_Dir_Name;
+ Output_Directory := Out_Dir_Name;
+ end Set_Directory_Names;
+
+ -- Start of processing for Recursive_Process
+
+ begin
+ -- Open the current input directory
+
+ begin
+ Open (Dir_In, In_Dir);
+
+ exception
+ when Directory_Error =>
+ Fail ("could not read directory " & In_Dir);
+ end;
+
+ -- Set the new input and output directory names
+
+ Name_Len := In_Dir'Length;
+ Name_Buffer (1 .. Name_Len) := In_Dir;
+ In_Dir_Name := Name_Find;
+ Name_Len := Out_Dir'Length;
+ Name_Buffer (1 .. Name_Len) := Out_Dir;
+ Out_Dir_Name := Name_Find;
+
+ Set_Directory_Names;
+
+ -- Traverse the input directory
+ loop
+ Read (Dir_In, Name, Last);
+ exit when Last = 0;
+
+ if Name (1 .. Last) /= "." and then Name (1 .. Last) /= ".." then
+ declare
+ Input : constant String :=
+ In_Dir & Directory_Separator & Name (1 .. Last);
+ Output : constant String :=
+ Out_Dir & Directory_Separator & Name (1 .. Last);
+
+ begin
+ -- If input is an ordinary file, process it
+
+ if Is_Regular_File (Input) then
+ -- First get the output file name
+
+ Name_Len := Last;
+ Name_Buffer (1 .. Name_Len) := Name (1 .. Last);
+ Infile_Name := Name_Find;
+ Preprocess_Infile_Name;
+
+ -- Set the input file name and process the file
+
+ Name_Len := Input'Length;
+ Name_Buffer (1 .. Name_Len) := Input;
+ Infile_Name := Name_Find;
+ Process_One_File;
+
+ elsif Is_Directory (Input) then
+ -- Input is a directory. If the corresponding output
+ -- directory does not already exist, create it.
+
+ if not Is_Directory (Output) then
+ begin
+ Make_Dir (Dir_Name => Output);
+
+ exception
+ when Directory_Error =>
+ Fail ("could not create directory """
+ & Output
+ & """");
+ end;
+ end if;
+
+ -- And process this new input directory
+
+ Recursive_Process (Input, Output);
+
+ -- Reestablish the input and output directory names
+ -- that have been modified by the recursive call.
+
+ Set_Directory_Names;
+ end if;
+ end;
+ end if;
+ end loop;
+ end Recursive_Process;
+
+ -- Start of processing for Process_Files
+
+ begin
+ if Output_Directory = No_Name then
+
+ -- If the output is not a directory, fail if the input is
+ -- an existing directory, to avoid possible problems.
+
+ if Is_Directory (Get_Name_String (Infile_Name)) then
+ Fail ("input file """ & Get_Name_String (Infile_Name) &
+ """ is a directory");
+ end if;
+
+ -- Just process the single input file
+
+ Process_One_File;
+
+ elsif Input_Directory = No_Name then
+
+ -- Get the output file name from the input file name, and process
+ -- the single input file.
+
+ Preprocess_Infile_Name;
+ Process_One_File;
+
+ else
+ -- Recursively process files in the directory tree rooted at the
+ -- input directory.
+
+ Recursive_Process
+ (In_Dir => Get_Name_String (Input_Directory),
+ Out_Dir => Get_Name_String (Output_Directory));
+ end if;
+ end Process_Files;
+
-------------------------
-- Put_Char_To_Outfile --
-------------------------
procedure Scan_Command_Line is
Switch : Character;
+ procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
+
+ -- Start of processing for Scan_Command_Line
+
begin
- -- Parse the switches
+ -- First check for --version or --help
+
+ Check_Version_And_Help ("GNATPREP", "1996");
+
+ -- Now scan the other switches
+
+ GNAT.Command_Line.Initialize_Option_Scan;
loop
begin
- Switch := GNAT.Command_Line.Getopt ("D: b c r s u v");
+ Switch := GNAT.Command_Line.Getopt ("D: b c C r s T u v");
+
case Switch is
when ASCII.NUL =>
when 'c' =>
Opt.Comment_Deleted_Lines := True;
+ when 'C' =>
+ Opt.Replace_In_Comments := True;
+
when 'r' =>
Source_Ref_Pragma := True;
when 's' =>
Opt.List_Preprocessing_Symbols := True;
+ when 'T' =>
+ Unix_Line_Terminators := True;
+
when 'u' =>
Opt.Undefined_Symbols_Are_False := True;
begin
exit when S'Length = 0;
- if Infile_Name = null then
- Infile_Name := new String'(S);
- elsif Outfile_Name = null then
- Outfile_Name := new String'(S);
- elsif Deffile_Name = null then
- Deffile_Name := new String'(S);
+ Name_Len := S'Length;
+ Name_Buffer (1 .. Name_Len) := S;
+
+ if Infile_Name = No_Name then
+ Infile_Name := Name_Find;
+ elsif Outfile_Name = No_Name then
+ Outfile_Name := Name_Find;
+ elsif Deffile_Name = No_Name then
+ Deffile_Name := Name_Find;
else
- Fail ("too many arguments specifed");
+ Fail ("too many arguments specified");
end if;
end;
end loop;
Write_Line (" deffile Name of the definition file");
Write_Eol;
Write_Line ("gnatprep switches:");
+ Display_Usage_Version_And_Help;
Write_Line (" -b Replace preprocessor lines by blank lines");
Write_Line (" -c Keep preprocessor lines as comments");
+ Write_Line (" -C Do symbol replacements within comments");
Write_Line (" -D Associate symbol with value");
Write_Line (" -r Generate Source_Reference pragma");
Write_Line (" -s Print a sorted list of symbol names and values");
+ Write_Line (" -T Use LF as line terminators");
Write_Line (" -u Treat undefined symbols as FALSE");
Write_Line (" -v Verbose mode");
Write_Eol;
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