/*
 * Copyright (C) 2012-2013 Andy Spencer <andy753421@gmail.com>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

/* Macros */
#define ABS(a)   ((a) > 0 ? (a) : -(a))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define CLAMP(x,l,h) MIN(MAX(x,l),h)
#define ROUND(x) ((int)((x)+0.5))
#define N_ELEMENTS(x) (sizeof(x)/sizeof((x)[0]))

#define new0(type) alloc0(sizeof(type))

/* Types */
typedef void (*cb_t)(void *data);

typedef struct {
	char *data;
	int   len;
	int   max;
} buf_t;

typedef struct {
	int   fd;
	cb_t  cb;
	void *data;
} poll_t;

/* Debug functions */
void util_init(void);

/* Stirng functions */
void strsub(char *str, char find, char repl);
char *strcopy(const char *str);
void strset(char **old, const char *str);
int match(const char *a, const char *b);
int prefix(const char *str, const char *prefix, const char **suffix);
char *despace(char *text);
void escape(char *dst, const char *src, int len);

/* Memory functions */
void *alloc0(int size);
void append(buf_t *buf, const char *data, int len);
void release(buf_t *buf);
const char *reset(buf_t *buf);

/* Data functions */
int base64(const void *in, int ilen, void *out, int olen);

/* File functions */
char *read_file(const char *path, int *len);

/* Polling functions */
int poll_add(poll_t *poll, int fd, cb_t cb, void *data);
int poll_ctl(poll_t *poll, int in, int out, int err);
int poll_del(poll_t *poll);
int poll_run(int timeout);
void poll_quit(void);

/* Debug functions */
void debug(char *fmt, ...);
void error(char *fmt, ...);