49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include "kprintf.h"
|
|
#include "util.h"
|
|
|
|
char *util_get_filename(char *path) {
|
|
char *lastslash = path;
|
|
char *p = path;
|
|
|
|
while (*p) {
|
|
if (*p == '/') {
|
|
lastslash = p + 1;
|
|
}
|
|
p++;
|
|
}
|
|
return lastslash;
|
|
}
|
|
|
|
const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
|
|
static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
|
|
int unit = 0;
|
|
|
|
// Scale down until value fits nicely
|
|
uint64_t rem = 0;
|
|
while (bytes >= 1024 && unit < (int)(sizeof(units)/sizeof(units[0])) - 1) {
|
|
rem = bytes % 1024;
|
|
bytes /= 1024;
|
|
unit++;
|
|
}
|
|
|
|
if (unit == 0) {
|
|
// Just bytes
|
|
ksnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
|
|
} else {
|
|
// Show one decimal place without using floats
|
|
// Multiply remainder by 10 to get first decimal digit
|
|
uint64_t frac = (rem * 10 + 512) / 1024; // rounded
|
|
if (frac == 10) { // handle carry, e.g. 1023.9 -> 1024.0
|
|
bytes++;
|
|
frac = 0;
|
|
}
|
|
|
|
if (frac > 0) ksnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
|
|
else ksnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
|
|
}
|
|
|
|
return buf;
|
|
}
|