File: conf_string.c

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/*
**	SWISH++
**	conf_string.c
**
**	Copyright (C) 1998  Paul J. Lucas
**
**	This program 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; if not, write to the Free Software
**	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

// standard
#include <cstring>
#include <iostream>

// local
#include "conf_string.h"
#include "exit_codes.h"
#include "platform.h"
#include "util.h"			/* for error() */

using namespace std;

extern char const*	me;

//*****************************************************************************
//
// SYNOPSIS
//
	conf<std::string>::conf( char const *name, char const *default_value ) :
//
// DESCRIPTION
//
//	Construct a conf<std::string> setting its name and default value.
//
// PARAMETERS
//
//	name		The name of the configuration variable.
//
//	default_value	Its default value.
//
//*****************************************************************************
	conf_var( name ),
	default_value_( default_value ),
	value_( default_value )
{
	// do nothing else
}

//*****************************************************************************
//
// SYNOPSIS
//
	/* virtual */ void conf<std::string>::parse_value( char *line )
//
// DESCRIPTION
//
//	Parse a single string value from the line of text.
//
// PARAMETERS
//
//	line	The line of text to be parsed.
//
//*****************************************************************************
{
	if ( !line || !*line ) {
		error() << '"' << name() << "\" has no value\n";
		::exit( Exit_Config_File );
	}

	//
	// If the first non-whitespace character is a quote and the last
	// non-whitespace character is the SAME quote, strip the quotes.
	//
	if ( *line == '\'' || *line == '"' ) {
		char *const last = line + ::strlen( line ) - 1;
		if ( *line == *last )
			++line, *last = '\0';
	}

	value_ = line;
}