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//! Byte size formatting
const int = @import("int.zig");
pub fn format(bytes: u64, buf: []u8) []const u8 {
const kb = bytes / 1024;
const mb = kb / 1024;
if (mb >= 1024) {
// Round: add 512 (half of 1024) before dividing
const gb_tenths = (mb * 10 + 512) / 1024;
const gb_whole = gb_tenths / 10;
const gb_frac = gb_tenths % 10;
var pos: usize = 0;
const whole_str = int.toStr(gb_whole, buf[pos..]);
pos += whole_str.len;
buf[pos] = '.';
pos += 1;
buf[pos] = '0' + @as(u8, @intCast(gb_frac));
pos += 1;
buf[pos] = ' ';
pos += 1;
buf[pos] = 'G';
pos += 1;
buf[pos] = 'B';
pos += 1;
return buf[0..pos];
} else if (mb > 0) {
const num_str = int.toStr(mb, buf);
buf[num_str.len] = ' ';
buf[num_str.len + 1] = 'M';
buf[num_str.len + 2] = 'B';
return buf[0 .. num_str.len + 3];
} else if (kb > 0) {
const num_str = int.toStr(kb, buf);
buf[num_str.len] = ' ';
buf[num_str.len + 1] = 'K';
buf[num_str.len + 2] = 'B';
return buf[0 .. num_str.len + 3];
} else {
const num_str = int.toStr(bytes, buf);
buf[num_str.len] = ' ';
buf[num_str.len + 1] = 'B';
return buf[0 .. num_str.len + 2];
}
}
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