struct progress_implementation {
char *name;
- void *(*create) (long, long);
- void (*update) (void *, long, long);
- void (*finish) (void *, long);
- void (*set_params) (const char *);
+ void *(*create) PARAMS ((long, long));
+ void (*update) PARAMS ((void *, long, long));
+ void (*finish) PARAMS ((void *, long));
+ void (*set_params) PARAMS ((const char *));
};
/* Necessary forward declarations. */
memset (bp, 0, sizeof (*bp));
+ /* In theory, our callers should take care of this pathological
+ case, but it can sometimes happen. */
+ if (initial > total)
+ total = initial;
+
bp->initial_length = initial;
bp->total_length = total;
adjust bp->total_length to the new reality, so that the code in
create_image() that depends on total size being smaller or
equal to the expected size doesn't abort. */
- bp->total_length = bp->count + bp->initial_length;
+ bp->total_length = bp->initial_length + bp->count;
/* This code attempts to determine the current download speed. We
measure the speed over the interval of approximately three
{
struct bar_progress *bp = progress;
- /* If the download was faster than the granularity of the timer,
- fake some output so that we don't get the ugly "----.--" rate at
- the download finish. */
- if (bp->hist.summed_times == 0)
- bp->hist.summed_times = 1;
- if (dltime == 0)
- dltime = 1;
+ if (bp->total_length > 0
+ && bp->count + bp->initial_length > bp->total_length)
+ /* See bar_update() for explanation. */
+ bp->total_length = bp->initial_length + bp->count;
create_image (bp, dltime);
display_image (bp->buffer);
char *size_legible = legible (size);
int size_legible_len = strlen (size_legible);
- long recent_time = bp->hist.summed_times;
- long recent_bytes = bp->hist.summed_bytes;
+ struct bar_progress_hist *hist = &bp->hist;
/* The progress bar should look like this:
xx% [=======> ] nn,nnn 12.34K/s ETA 00:00
p += strlen (p);
/* " 1012.45K/s" */
- if (recent_time && recent_bytes)
+ if (hist->summed_times && hist->summed_bytes)
{
static char *short_units[] = { "B/s", "K/s", "M/s", "G/s" };
int units = 0;
- double dlrate = calc_rate (recent_bytes, recent_time, &units);
+ double dlrate;
+ dlrate = calc_rate (hist->summed_bytes, hist->summed_times, &units);
sprintf (p, " %7.2f%s", dlrate, short_units[units]);
p += strlen (p);
}
APPEND_LITERAL (" --.--K/s");
/* " ETA xx:xx:xx" */
- if (bp->total_length > 0 && recent_bytes > 0)
+ if (bp->total_length > 0 && dl_total_time > 3000)
{
long eta;
int eta_hrs, eta_min, eta_sec;
/* Don't change the value of ETA more than approximately once
per second; doing so would cause flashing without providing
- any value to the user. */
+ any value to the user. */
if (dl_total_time - bp->last_eta_time < 900
&& bp->last_eta_value != 0)
eta = bp->last_eta_value;
else
{
- double tm_sofar = (double)recent_time / 1000;
+ /* Calculate ETA using the average download speed to predict
+ the future speed. If you want to use the current speed
+ instead, replace dl_total_time with hist->summed_times
+ and bp->count with hist->summed_bytes. I found that
+ doing that results in a very jerky and ultimately
+ unreliable ETA. */
+ double time_sofar = (double)dl_total_time / 1000;
long bytes_remaining = bp->total_length - size;
- eta = (long) (tm_sofar * bytes_remaining / recent_bytes);
+ eta = (long) (time_sofar * bytes_remaining / bp->count);
bp->last_eta_value = eta;
bp->last_eta_time = dl_total_time;
}
eta_min = eta / 60, eta %= 60;
eta_sec = eta;
- /* Pad until the end of screen. The padding is dependent on the
- hour value. */
- if (eta_hrs == 0 || eta_hrs > 99)
- /* Hours not printed: pad with three spaces (two digits and
- colon). */
- APPEND_LITERAL (" ");
- else if (eta_hrs < 10)
- /* Hours printed with one digit: pad with one space. */
- *p++ = ' ';
- else
- /* Hours printed with two digits: we're using maximum width,
- don't pad. */
- ;
-
- APPEND_LITERAL (" ETA ");
-
if (eta_hrs > 99)
- /* Bogus value, probably due to a calculation overflow. Print
- something safe to avoid overstepping the buffer bounds. */
- sprintf (p, "--:--");
- else if (eta_hrs > 0)
- sprintf (p, "%d:%02d:%02d", eta_hrs, eta_min, eta_sec);
+ goto no_eta;
+
+ if (eta_hrs == 0)
+ {
+ /* Hours not printed: pad with three spaces. */
+ APPEND_LITERAL (" ");
+ sprintf (p, " ETA %02d:%02d", eta_min, eta_sec);
+ }
else
- sprintf (p, "%02d:%02d", eta_min, eta_sec);
+ {
+ if (eta_hrs < 10)
+ /* Hours printed with one digit: pad with one space. */
+ *p++ = ' ';
+ sprintf (p, " ETA %d:%02d:%02d", eta_hrs, eta_min, eta_sec);
+ }
p += strlen (p);
}
else if (bp->total_length > 0)
- APPEND_LITERAL (" ETA --:--");
+ {
+ no_eta:
+ APPEND_LITERAL (" ");
+ }
assert (p - bp->buffer <= bp->width);
projects / wget / blobdiff