#ifndef __BTS__H
#define __BTS__H
#include <stdio.h>

typedef enum { BTS_INPUT, BTS_OUTPUT, BTS_FREE } btsIo;
struct btStream;
typedef struct btStream {
    int type;
    btsIo iodir;
    int (*read)(struct btStream* bts, char *buf, int len);
    int (*write)(struct btStream* bts, char *buf, int len);
    int (*peek)(struct btStream* bts);
    int (*rewind)(struct btStream* bts, btsIo iodir);
    void (*destroy)(struct btStream* bts);
} btStream;

struct btstrbuf {
    char *buf;
    int len;
};

btStream* bts_create_strstream() ;
btStream* bts_create_filestream_fp( FILE *fp, btsIo iodir) ;
btStream* bts_create_filestream( char *fname, btsIo iodir) ;
void bts_destroy( btStream* bts);
int bts_rewind( btStream* bts, btsIo iodir);

struct btstrbuf bts_get_buf( btStream *bts) ;

int bts_read( btStream* bts, char *buf, int len) ;
int bts_write( btStream* bts, char *buf, int len) ;
size_t writebts( void *buf, size_t size, size_t nmemb, void* stream );
int bts_peek( btStream* bts) ;
int bts_printf( btStream* bts, char *fmt, ...) ;

int bts_scanbreak( btStream* bts, char *cset, char *bset, char *buf, int bufsz);
#endif