+ char buf[MAX_WINSIZE + 1];
+ time_t now;
+ off_t transferred;
+ double elapsed;
+ int percent;
+ off_t bytes_left;
+ int cur_speed;
+ int hours, minutes, seconds;
+ int i, len;
+ int file_len;
+
+ transferred = *counter - cur_pos;
+ cur_pos = *counter;
+ now = time(NULL);
+ bytes_left = end_pos - cur_pos;
+
+ if (bytes_left > 0)
+ elapsed = now - last_update;
+ else {
+ elapsed = now - start;
+ /* Calculate true total speed when done */
+ transferred = end_pos;
+ bytes_per_second = 0;
+ }
+
+ /* calculate speed */
+ if (elapsed != 0)
+ cur_speed = (transferred / elapsed);
+ else
+ cur_speed = transferred;
+
+#define AGE_FACTOR 0.9
+ if (bytes_per_second != 0) {
+ bytes_per_second = (bytes_per_second * AGE_FACTOR) +
+ (cur_speed * (1.0 - AGE_FACTOR));
+ } else
+ bytes_per_second = cur_speed;
+
+ /* filename */
+ buf[0] = '\0';
+ file_len = win_size - 35;
+ if (file_len > 0) {
+ len = snprintf(buf, file_len + 1, "\r%s", file);
+ if (len < 0)
+ len = 0;
+ if (len >= file_len + 1)
+ len = file_len;
+ for (i = len; i < file_len; i++)
+ buf[i] = ' ';
+ buf[file_len] = '\0';
+ }
+
+ /* percent of transfer done */
+ if (end_pos != 0)
+ percent = ((float)cur_pos / end_pos) * 100;
+ else
+ percent = 100;
+ snprintf(buf + strlen(buf), win_size - strlen(buf),
+ " %3d%% ", percent);
+
+ /* amount transferred */
+ format_size(buf + strlen(buf), win_size - strlen(buf),
+ cur_pos);
+ strlcat(buf, " ", win_size);
+
+ /* bandwidth usage */
+ format_rate(buf + strlen(buf), win_size - strlen(buf),
+ (off_t)bytes_per_second);
+ strlcat(buf, "/s ", win_size);
+
+ /* ETA */
+ if (!transferred)
+ stalled += elapsed;
+ else
+ stalled = 0;
+
+ if (stalled >= STALL_TIME)
+ strlcat(buf, "- stalled -", win_size);
+ else if (bytes_per_second == 0 && bytes_left)
+ strlcat(buf, " --:-- ETA", win_size);
+ else {
+ if (bytes_left > 0)
+ seconds = bytes_left / bytes_per_second;
+ else
+ seconds = elapsed;
+
+ hours = seconds / 3600;
+ seconds -= hours * 3600;
+ minutes = seconds / 60;
+ seconds -= minutes * 60;
+
+ if (hours != 0)
+ snprintf(buf + strlen(buf), win_size - strlen(buf),
+ "%d:%02d:%02d", hours, minutes, seconds);
+ else
+ snprintf(buf + strlen(buf), win_size - strlen(buf),
+ " %02d:%02d", minutes, seconds);
+
+ if (bytes_left > 0)
+ strlcat(buf, " ETA", win_size);
+ else
+ strlcat(buf, " ", win_size);
+ }
+
+ atomicio(vwrite, STDOUT_FILENO, buf, win_size - 1);
+ last_update = now;