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This commit is contained in:
Kamil Kowalczyk
2025-10-02 22:29:20 +02:00
parent 91d648ade4
commit bc2b115cb3
9 changed files with 115 additions and 32 deletions
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31
ulib/string/conv.c
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@ -157,3 +157,34 @@ long string_conv_strtol(const char *nptr, char **endptr, int base)
*endptr = (char *) (any ? s - 1 : nptr);
return (acc);
}
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
usnprintf(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) usnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
else usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
}
return buf;
}

1
ulib/string/conv.h
View File

@ -3,5 +3,6 @@
unsigned long string_conv_strtoul(const char *nptr, char **endptr, int base);
long string_conv_strtol(const char *nptr, char **endptr, int base);
const char *human_size(uint64_t bytes, char *buf, size_t bufsize);
#endif // ULIB_STRING_CONV_H_