/* 
 * This file part of sdcv - console version of Stardict program
 * http://sdcv.sourceforge.net
 * Copyright (C) 2005 Evgeniy <dushistov@mail.ru>
 *
 * 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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <cstdio>
#ifdef WITH_READLINE
#  include <readline/readline.h>
#  include <readline/history.h>
#endif
#include <glib.h>

#include "utils.hpp"

#include "readline.hpp"

#ifndef WITH_READLINE
 
class dummy_readline : public read_line {
public:
	bool read(const string& banner, string& line) {
		printf(banner.c_str());
		return stdio_getline(stdin, line);
	}
};

#else

class real_readline : public read_line {
public:
	real_readline()
	{
		using_history();
		string histname=(string(g_get_home_dir())+G_DIR_SEPARATOR+".sdcv_history");
		read_history(histname.c_str());;
	}
	~real_readline() 
	{
		string histname=(string(g_get_home_dir())+G_DIR_SEPARATOR+".sdcv_history");
		write_history(histname.c_str());
		const gchar *hist_size_str=g_getenv("SDCV_HISTSIZE");
		int hist_size;
		if (!hist_size_str || sscanf(hist_size_str, "%d", &hist_size)<1)
			hist_size=2000;
		history_truncate_file(histname.c_str(), hist_size);
	}
	bool read(const string &banner, string& line)
	{
    char *phrase=NULL;
		phrase=readline(banner.c_str());
		if (phrase) {
			line=phrase;
			free(phrase);
			return true;
		}
		return false;
	}
	void add_to_history(const std::string& phrase) { add_history(phrase.c_str()); }
};

#endif//WITH_READLINE

read_line *create_readline_object()
{
#ifdef WITH_READLINE
	return new real_readline;
#else
	return new dummy_readline;
#endif
}