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/* Projekt: Transport
* Autor: Franciszek Malinka 316093
*/
#include "window.h"
#include <stdlib.h>
#include <strings.h>
void init_window(window_t *w, int window_size, int window_width) {
w->ar = malloc(window_size * sizeof(char *));
for (int i = 0; i < window_size; i++)
w->ar[i] = malloc(window_width * sizeof(char));
w->uptodate = malloc(window_size);
bzero (w->uptodate, window_size);
w->first_pos = 0;
w->size = window_size;
}
void destroy_window(window_t *w) {
for (int i = 0; i < w->size; i++)
free(w->ar[i]);
free(w->ar);
free(w->uptodate);
}
void shift_while_uptodate(window_t *w) {
while (w->uptodate[w->first_pos]) {
w->uptodate[w->first_pos] = false;
w->first_pos = (w->first_pos + 1) % w->size;
}
}
void shift(window_t *w) {
w->uptodate[w->first_pos] = false;
w->first_pos = (w->first_pos + 1) % w->size;
}
void update(window_t *w, int pos, char *buffer, size_t buf_size) {
pos = (w->first_pos + pos) % w->size;
for (int i = 0; i < buf_size; i++) w->ar[pos][i] = buffer[i];
w->uptodate[pos] = true;
}
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