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########################################################################
#
# comment 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 - comment module
# Filename : $RCSfile: comment.pm,v $
# Author : $Author: darren $
# Maintainer : Darren Miller: darren@cabaret.demon.co.uk
# File version : $Revision: 1.3 $
# Last changed : $Date: 2002/11/08 19:46:06 $
# Description : This module contains a function to remove all
# comments where the comment is defined as all
# characters on a line following the string $comment
# Licence : GNU copyleft
#
########################################################################
# THIS IS A FILEPP MODULE, YOU NEED FILEPP TO USE IT!!!
# usage: normally called from within another module, see
# hash-comment.pm and c-comment.pm
########################################################################
package Comment;
use strict;
# version number of module
my $VERSION = '1.0.0';
my $string;
# remove all comments from string
# inputs:
# comment - the comment, a string or char
# string - the input string which may contain comments to be removed
# outputs:
# output - the string with the comment removed
sub RemoveComments
{
my $comment = shift;
$string = shift;
my $search = 1;
my $addnewline = 0;
my $output = "";
while($search) {
# check for comment in string
if($string =~ /$comment/) {
# keep everything before first comment
$output = $output.$`;
# set string to everything after comment
$string = $'; # one more quote for emacs '
# make note of removed part of string
my $removed = $&;
# check comment is not enclosed in quotes eg: "#",
# count number of '"' in string and if odd then comment in quotes
my @Count = ($output =~ /[^\\]\"/g);
if($#Count % 2 != 0) { # if true comment is NOT in quotes
$search = 0;
# check if last char of string is a newline
if($string =~ /\n$/) { $addnewline = 1; }
}
# put comment back onto string
else { $output = $output.$removed; }
}
else {
$output = $output.$string;
$search = 0;
}
}
# put newline back if needed
if($addnewline) { $output = $output."\n"; }
return $output;
}
# return whatever is left of the last line processed after comment removal
sub GetLineEnd
{
return $string;
}
return 1;
########################################################################
# End of file
########################################################################
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