progressbar.c

来自「SMDK2440 boot code, base on vivi」· C语言 代码 · 共 52 行

#include <config.h>
#include <vstring.h>
#include <progressbar.h>

static int total;

void
progressbar_set_total(int v)
{
	total = v;
}

void
progressbar(int done, int flag)
{
	static int bar_step = 0;
	int percent;
	unsigned long long d;

	if (total != 0) {
		if (flag == BAR_DECREASE) d = (total - done) * 100ULL;
		else d = done * 100;

		if (done < 0) percent = 100;
		else percent = (int)(d/(unsigned long long)total);

		if (percent > 100) percent = 100;
	} else {
		percent = 0;
	}

	switch (bar_step++ % 4) {
	case 0:
		printk("  %c %3d%%", '-', percent);
		break;
	case 1:
		printk("  %c %3d%%", '\\', percent);
		break;
	case 2:
		printk("  %c %3d%%", '|', percent);
		break;
	case 3:
		printk("  %c %3d%%", '/', percent);
		break;
	}
	printk("\b\b\b\b\b\b\b\b");
	if (percent == 100) {
		printk("        ");
		printk("\b\b\b\b\b\b\b\b");
	}
}