#ifndef _GAPBUFFER_H
#define _GAPBUFFER_H

#include <stddef.h>

struct gapbuffer {
  char* buffer;
  size_t size;
  size_t gap_start;
  size_t gap_end;
};

void gapbuffer_init (struct gapbuffer* gb, size_t capacity);

void gapbuffer_fini (struct gapbuffer* gb);

void gapbuffer_move (struct gapbuffer* gb, size_t pos);

void gapbuffer_insert (struct gapbuffer* gb, char c);

void gapbuffer_backspace (struct gapbuffer* gb);

void gapbuffer_grow (struct gapbuffer* gb);

char* gapbuffer_get_string (struct gapbuffer* gb);

size_t gapbuffer_length (struct gapbuffer* gb);

char* gapbuffer_string_at (struct gapbuffer* gb, size_t pos);

#endif // _GAPBUFFER_H