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########################################################################
#
# cpp 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; see the file COPYING. If not, write to
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
#
########################################################################
#
# Project : File Preprocessor - cpp module
# Filename : $RCSfile: cpp.pm,v $
# Author : $Author: darren $
# Maintainer : Darren Miller: darren@cabaret.demon.co.uk
# File version : $Revision: 1.4 $
# Last changed : $Date: 2003/06/23 22:05:58 $
# Description : Makes filepp behave similar to cpp
# Licence : GNU copyleft
#
########################################################################
# THIS IS A FILEPP MODULE, YOU NEED FILEPP TO USE IT!!!
# usage: filepp -m cpp.pm <files>
########################################################################
package Cpp;
use strict;
# version number of module
my $VERSION = '0.2.0';
my $last_file = "";
my $last_line = "";
my $last_include = -1;
my @SystemIncludes = ("/usr/include");
{
my $include;
foreach $include (@SystemIncludes) {
Filepp::AddIncludePath($include);
}
}
# This will remove all C and C++ comments (done after AddFileInfo)
Filepp::Define("REMOVE_C_COMMENTS_FIRST");
require "c-comment.pm";
########################################################################
# This function adds cpp style information whenever the current file
# being processed changes
########################################################################
sub AddFileInfo
{
# take in next line
my $input = shift;
# get name of current file
my $current_file = Filepp::ReplaceDefines("__FILE__");
my $current_line = Filepp::ReplaceDefines("__LINE__");
my $current_include = Filepp::ReplaceDefines("__INCLUDE_LEVEL__");
# check if file has changed
if($current_file ne $last_file) {
# gcc cpp flags:
# `1' This indicates the start of a new file.
# `2' This indicates returning to a file (after having included
# another file).
# `3' This indicates that the following text comes from a system
# header file, so certain warnings should be suppressed.
# `4' This indicates that the following text should be treated as C. ?
my $flags = "";
my $last_flags = "";
if($last_file ne "") {
# check for start of new file
if($current_include > $last_include) {
$flags = " 1";
}
else { # returning
$flags = " 2";
}
}
my $inc;
foreach $inc (@SystemIncludes) {
if($current_file =~ /\A\"$inc/) { $flags = $flags." 3"; }
if($last_file =~ /\A\"$inc/) { $last_flags = " 3"; }
}
if($last_file ne "") {
Filepp::Write("# ".$last_line." ".$last_file.$last_flags."\n");
}
Filepp::Write("# ".$current_line." ".$current_file.$flags."\n");
$last_file = $current_file;
}
# updated number of lines processed
$last_line = $current_line;
$last_include = $current_include;
# return the unmodified line
return $input;
}
Filepp::AddProcessor("Cpp::AddFileInfo", 1);
Filepp::AddCloseInputFunc("Cpp::AddFileInfo");
# This will quote macros such as __FILE__
require "cmacros.pm";
# This will make macro replacement more cpp line
Filepp::SetWordBoundaries(1);
return 1;
########################################################################
# End of file
########################################################################
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