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#ifndef BUFFER_H
#define BUFFER_H
#include <sys/types.h> /* need type: ssize_t */
typedef struct buffer {
char *x;
unsigned int p;
size_t n;
int fd;
ssize_t (*op)();
} buffer;
#define BUFFER_INIT(op, fd, buf, len) {(buf), 0, (len), (fd), (op)}
#define BUFFER_SMALL 256
#define BUFFER_INSIZE 8192
#define BUFFER_OUTSIZE 8192
#define BUFFER_MTUSIZE 1450
extern void buffer_init(buffer *, ssize_t (*op)(), int, char *, size_t);
extern int buffer_flush(buffer *);
extern int buffer_put(buffer *, const char *, size_t);
extern int buffer_putalign(buffer *, const char *, size_t);
extern int buffer_putflush(buffer *, const char *, size_t);
extern int buffer_puts(buffer *, const char *);
extern int buffer_putsalign(buffer *, const char *);
extern int buffer_putsflush(buffer *, const char *);
#define buffer_PUTC(s, c) (((s)->n != (s)->p) ? ((s)->x[(s)->p++] = (c), 0) : buffer_put((s), &(c), 1))
extern int buffer_get(buffer *, char *, size_t);
extern int buffer_bget(buffer *, char *, size_t);
extern int buffer_feed(buffer *);
extern char *buffer_peek(buffer *);
extern void buffer_seek(buffer *, size_t);
#define buffer_PEEK(s) ((s)->x + (s)->n)
#define buffer_SEEK(s, len) (((s)->p -= (len)), ((s)->n += (len)))
#define buffer_GETC(s, c) \
(((s)->p > 0) ? (*(c) = (s)->x[(s)->n], buffer_SEEK((s), 1), 1) : buffer_get((s), (c), 1))
extern int buffer_copy(buffer *, buffer *);
extern ssize_t buffer_unixread(int, char *, size_t);
extern ssize_t buffer_unixwrite(int, char *, size_t);
extern buffer *buffer_0;
extern buffer *buffer_1;
extern buffer *buffer_2;
extern buffer *buffer_0small;
extern buffer *buffer_1small;
extern buffer *buffer_2small;
#endif
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