#pragma once
#include <stddef.h>

typedef struct { char *data; size_t len; size_t cap; } Buf;

void buf_init(Buf *b);
void buf_free(Buf *b);
void buf_append(Buf *b, const char *s, size_t n);
void buf_str(Buf *b, const char *s);
void buf_fmt(Buf *b, const char *fmt, ...) __attribute__((format(printf,2,3)));