/*
 * Copyright (C) 2002-2007 The Warp Rogue Team
 * Part of the Warp Rogue Project
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License.
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY.
 *
 * See the license.txt file for more details.
 */

/*
 * Module Name: Util
 * Description: Misc. utility functions
 */


#define ASCII_LF			0x0A
#define ASCII_CR			0x0D

#define ascii_to_integer(c)		((c) - '0')

#define strings_equal(s1,s2)		(strcmp((s1),(s2)) == 0)
#define is_empty_string(s)		((s)[0] == '\0')
#define clear_string(s)			((s)[0] = '\0')

#define random_choice(p)		(random_int(1, 100) <= (p))

#define sgn(x)				((x) == 0 ? 0 :((x) > 0 ? 1 : -1))



typedef int	COORD_MODIFIER;

typedef enum {
	
	COORD_Y,
	COORD_X

} COORD_TYPE;


COORD_MODIFIER	direction_modifier(COORD_TYPE, DIRECTION);
DIRECTION	name_to_direction(const char *);
DIRECTION *	randomised_directions(DIRECTION *);

void *		checked_malloc(size_t);
void *		checked_realloc(void *, size_t);

int		divide_and_round_up(int, int);
int		percent(int, int);

char *		string_to_lowercase(char *);

bool		menu_key_to_index(int *, KEY_CODE, int);

FILE *		open_file(const char *, const char *);
void		close_file(FILE *);
bool		file_exists(const char *);
long int	file_length(FILE *);

char *		read_text_file(char *, PROGRAM_DIRECTORY, const char *);