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/* Copyright (C) 2001-2005 by Hans Reiser, licensing governed by
reiser4progs/COPYING.
gauge.c -- common for all progs gauge fucntions. */
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <aal/libaal.h>
#include <misc/misc.h>
#define GAUGE_BITS_SIZE 4
aal_gauge_t *current_gauge = NULL;
static int misc_gauge_time(aal_gauge_time_t *time) {
struct timeval t;
uint64_t delta;
uint64_t usec;
if (!time->gap)
return 1;
gettimeofday(&t, NULL);
usec = t.tv_usec / 1000;
if ((uint64_t)t.tv_sec < time->sec)
goto next;
if (((uint64_t)t.tv_sec == time->sec) && (usec < time->misec))
goto next;
delta = (t.tv_sec - time->sec) * 1000 + (usec - time->misec);
if (delta > time->gap)
goto next;
return 0;
next:
time->sec = t.tv_sec;
time->misec = usec;
return 1;
}
static inline void misc_gauge_blit(void) {
static short bitc = 0;
static const char bits[] = "|/-\\";
fprintf(stderr, "%c", bits[bitc]);
bitc++;
bitc %= GAUGE_BITS_SIZE;
}
void misc_progress_handler(aal_gauge_t *gauge) {
if (!isatty(2))
return;
setlinebuf(stderr);
if (gauge->state == GS_ACTIVE ||
gauge->state == GS_RESUME)
{
/* Show gauge once per rate->time.interval. */
if (!misc_gauge_time(&gauge->time))
return;
}
misc_wipe_line(stderr);
if (gauge->state == GS_PAUSE)
goto done;
if (gauge->label[0] != '\0')
fprintf(stderr, "\r%s", gauge->label);
if (gauge->state == GS_DONE) {
current_gauge = NULL;
if (gauge->label[0] != '\0')
fprintf(stderr, "done\n");
goto done;
}
if (gauge->state == GS_START) {
current_gauge = gauge;
misc_gauge_time(&gauge->time);
goto done;
}
if (gauge->value_func)
gauge->value_func(gauge);
if (gauge->value != -1) {
uint32_t width, count;
width = misc_screen_width();
if (width < 10)
goto done;
width -= 10;
if (width > 50)
width = 50;
fprintf(stderr, "[");
count = width * gauge->value / 100;
width -= count;
while (count--) {
fprintf(stderr, "=");
}
misc_gauge_blit();
while(width--) {
fprintf(stderr, " ");
}
fprintf(stderr, "] %lld%%", gauge->value);
} else {
misc_gauge_blit();
}
done:
fflush(stderr);
}
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