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(* M2DriverOptions.mod provides procedures to handle driver options.
Copyright (C) 2011-2025 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT 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
along with GNU Modula-2; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. *)
IMPLEMENTATION MODULE M2DriverOptions ;
FROM DynamicStrings IMPORT String, Length, InitString, Mark, Slice, EqualArray,
InitStringCharStar, ConCatChar, ConCat, KillString,
PushAllocation, PopAllocationExemption, char ;
FROM SArgs IMPORT GetArg, Narg ;
FROM M2Options IMPORT CppRemember ;
(*
CppArgument - some options might have arguments, remember these as well.
*)
PROCEDURE CppArgument (i: CARDINAL; option: String) : CARDINAL ;
VAR
arg: String ;
BEGIN
IF GetArg (arg, i+1) AND (char (arg, 0) # '-')
THEN
(* arg exists and is not an option and might be an argument to a specific option. *)
IF EqualArray (option, '-I')
THEN
INC (i) ;
CppRemember (arg) (* arg will be a path for -I. *)
ELSIF EqualArray (option, '-D')
THEN
INC (i) ;
CppRemember (arg) (* arg will be define for -D. *)
ELSIF EqualArray (option, '-isystem')
THEN
INC (i) ;
CppRemember (arg) (* arg will be a path for -isystem. *)
ELSIF EqualArray (option, '-imultiarch')
THEN
INC (i) ;
CppRemember (arg) (* arg will be a definition for -imultiarch. *)
END
END ;
RETURN i
END CppArgument ;
(*
ScanCppArgs - scans the cpp arguments and builds up the cpp command line.
*)
PROCEDURE ScanCppArgs (i: CARDINAL) : CARDINAL ;
VAR
option: String ;
BEGIN
IF GetArg (option, i) AND EqualArray (option, '-fcpp-begin')
THEN
INC (i) ;
WHILE GetArg (option, i) DO
IF EqualArray (option, '-fcpp-end')
THEN
RETURN i
ELSE
(* do not remember the filename. *)
IF char (option, 0)='-'
THEN
CppRemember (option) ;
i := CppArgument (i, option)
END
END ;
INC (i)
END
END ;
RETURN i
END ScanCppArgs ;
END M2DriverOptions.
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