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#include "history.h"
#include "util.h"
#include <string.h>
#include <wchar.h>
void
history_init(struct history *history)
{
history->list = LIST_HEAD;
history->input = inputln_alloc();
history->sel = history->input;
}
void
history_submit(struct history *history)
{
/* if chose from history free input */
if (history->sel != history->input) {
link_pop(LINK(history->input));
inputln_free(history->input);
}
/* pop first in case already in history */
link_pop(LINK(history->sel));
history_add(history, history->sel);
/* create new input buf and add to hist */
history->input = inputln_alloc();
history->sel = history->input;
history_add(history, history->sel);
}
void
history_free(struct history *history)
{
struct link *iter, *next;
struct link *ln;
ln = link_pop(LINK(history->input));
inputln_free(UPCAST(ln, struct inputln));
for (iter = history->list.next; iter; ) {
next = iter->next;
inputln_free(UPCAST(iter, struct inputln));
iter = next;
}
history->list = LIST_HEAD;
history->input = NULL;
history->sel = NULL;
}
struct inputln *
history_list_prev(struct inputln *cur, const wchar_t *search)
{
struct link *iter;
struct inputln *ln;
for (iter = cur->link.prev; iter && iter->prev; iter = iter->prev) {
ln = UPCAST(iter, struct inputln);
if (!search || !*search || wcsstr(ln->buf, search))
return ln;
}
return cur;
}
struct inputln *
history_list_next(struct inputln *cur, const wchar_t *search)
{
struct link *iter;
struct inputln *ln;
for (iter = cur->link.next; iter; iter = iter->next) {
ln = UPCAST(iter, struct inputln);
if (!search || !*search || wcsstr(ln->buf, search))
return ln;
}
return cur;
}
void
history_prev(struct history *history)
{
history->sel = history_list_prev(history->sel, history->input->buf);
}
void
history_next(struct history *history)
{
history->sel = history_list_next(history->sel, history->input->buf);
}
void
history_add(struct history *history, struct inputln *line)
{
struct inputln *ln;
struct link *back;
if (list_len(&history->list) == HISTORY_MAX) {
/* pop last item to make space */
back = link_pop(link_back(&history->list));
inputln_free(UPCAST(back, struct inputln));
}
list_push_front(&history->list, LINK(line));
}
void
inputln_init(struct inputln *ln)
{
ln->buf = NULL;
ln->len = 0;
ln->cap = 0;
ln->cur = 0;
ln->link = LINK_EMPTY;
}
struct inputln *
inputln_alloc(void)
{
struct inputln *ln;
ln = malloc(sizeof(struct inputln));
ASSERT(ln != NULL);
inputln_init(ln);
inputln_resize(ln, 128);
return ln;
}
void
inputln_free(struct inputln *ln)
{
free(ln->buf);
free(ln);
}
void
inputln_left(struct inputln *ln)
{
ln->cur = MAX(0, ln->cur-1);
}
void
inputln_right(struct inputln *ln)
{
ln->cur = MIN(ln->len, ln->cur+1);
}
void
inputln_addch(struct inputln *line, wchar_t c)
{
int i;
if (line->len + 1 >= line->cap) {
line->cap *= 2;
line->buf = realloc(line->buf,
line->cap * sizeof(wchar_t));
}
for (i = line->len; i > line->cur; i--)
line->buf[i] = line->buf[i-1];
line->buf[line->cur] = c;
line->len++;
line->cur++;
line->buf[line->len] = '\0';
}
void
inputln_del(struct inputln *line, int n)
{
int i;
if (!line->cur) return;
n = MIN(n, line->cur);
for (i = line->cur; i <= line->len; i++)
line->buf[i-n] = line->buf[i];
for (i = line->len - n; i <= line->len; i++)
line->buf[i] = 0;
line->len -= n;
line->cur -= n;
}
void
inputln_copy(struct inputln *dst, struct inputln *src)
{
if (dst->buf) {
free(dst->buf);
dst->buf = NULL;
}
dst->len = src->len;
dst->buf = wcsdup(src->buf);
ASSERT(dst->buf != NULL);
dst->cap = src->len + 1;
dst->cur = dst->len;
}
void
inputln_replace(struct inputln *line, const wchar_t *str)
{
free(line->buf);
line->buf = wcsdup(str);
ASSERT(line->buf != NULL);
line->len = wcslen(str);
line->cap = line->len + 1;
line->cur = line->len;
}
void
inputln_resize(struct inputln *ln, size_t size)
{
ASSERT(size != 0);
ln->cap = size;
ln->buf = realloc(ln->buf, ln->cap * sizeof(wchar_t));
ASSERT(ln->buf != NULL);
ln->len = MIN(ln->len, ln->cap-1);
ln->buf[ln->len] = '\0';
}
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