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#include <sys/mman.h>
#include <stddef.h>
#include <assert.h>
#include "mem.h"
#include "slice.h"
#include "vector.h"
#define SEGMENT_LEN 8192
DEFINE_VECTOR(Vec_voidp, void *);
struct add_buf {
Vec_voidp *segments;
size_t size;
};
static void ab_init(struct add_buf **ab)
{
struct add_buf *nab = mem_malloc(sizeof *nab);
Vec_voidp_init(&nab->segments);
nab->size = 0;
*ab = nab;
}
static void ab_free(struct add_buf *ab)
{
size_t len = Vec_voidp_len(ab->segments);
for (size_t i = 0; i < len; i++)
munmap(Vec_voidp_get(ab->segments, i), SEGMENT_LEN);
Vec_voidp_free(ab->segments);
mem_free(ab);
}
inline static char *new_segment()
{
return mmap(NULL, SEGMENT_LEN, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
}
static void ab_push(struct add_buf *ab, char ch)
{
if (++ab->size > Vec_voidp_len(ab->segments) * SEGMENT_LEN)
Vec_voidp_push(ab->segments, new_segment());
char *seg = (char *)Vec_voidp_get(ab->segments, ab->size / SEGMENT_LEN);
seg[ab->size % SEGMENT_LEN] = ch;
}
struct piece {
size_t is_origin:1;
/* padding */
size_t start_index;
size_t length;
};
struct ed_buf {
Vec_voidp *ptab;
const char *origin;
struct add_buf *add;
};
void eb_init(struct ed_buf **eb)
{
Vec_voidp *ptab;
Vec_voidp_init(&ptab);
struct ed_buf *neb = mem_malloc(sizeof *neb);
neb->ptab = ptab;
neb->origin = NULL;
ab_init(&neb->add);
*eb = neb;
}
void eb_free(struct ed_buf *eb)
{
Vec_voidp_free(eb->ptab);
ab_free(eb->add);
free(eb);
}
void eb_insert(struct ed_buf *eb, int ch)
{
assert("TODO" == 0);
}
void eb_backspace(struct ed_buf *eb)
{
assert("TODO" == 0);
}
void eb_newline(struct ed_buf *eb)
{
assert("TODO" == 0);
}
/* set cursor */
void eb_set_cur_prev_line(struct ed_buf *eb)
{
assert("TODO" == 0);
}
void eb_set_cur_backward(struct ed_buf *eb)
{
assert("TODO" == 0);
}
void eb_set_cur_next_line(struct ed_buf *eb)
{
assert("TODO" == 0);
}
void eb_set_cur_forward(struct ed_buf *eb)
{
assert("TODO" == 0);
}
/* get */
void eb_get_line_slice(const struct ed_buf *eb, size_t pos, struct slice *sl)
{
assert("TODO" == 0);
}
size_t eb_get_cur_col(const struct ed_buf *eb)
{
assert("TODO" == 0);
}
size_t eb_get_cur_row(const struct ed_buf *eb)
{
assert("TODO" == 0);
}
size_t eb_get_line_num(const struct ed_buf *eb)
{
assert("TODO" == 0);
}
/* io */
void eb_bind(struct ed_buf *eb, const char *path)
{
assert("TODO" == 0);
}
void eb_load_file(struct ed_buf *eb)
{
assert("TODO" == 0);
}
void eb_save_file(struct ed_buf *eb)
{
assert("TODO" == 0);
}
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