byte-size

A class for easily displaying byte quantities in different formats

ByteSize (and the accompanying class, BitSize) was inspired by Omar's ByteSize class for C#.

Use the ByteSize class to represent amounts in bytes, kilobytes, megabytes, gigabytes, and so on (up to petabytes):

ByteSize bs(1024);
std::cout << bs.Bits(); // outputs 8192
std::cout << bs.Bytes(); // outputs 1024
std::cout << bs.Kilobytes(); // outputs 1
std::cout << bs; // outputs 1.00 KiB

By default, the binary prefix is used (1 kilobyte = 1024 bytes). The decimal prefix can be used by providing it in the constructor:

ByteSize bs(1024, BytePrefix::Decimal); // 1 kilobyte = 1000 bytes
std::cout << bs; // outputs 1.02 kB

The BitSize class works similarly, but is used to represent amounts in kilobits, megabits, gigabits, and so on (up to petabits):

BitSize bs_binary(1024);
BitSize bs_decimal(1024, BytePrefix::Decimal);
std::cout << bs_binary; // outputs 8.00 Kibit
std::cout << bs_decimal; // outputs 8.19 kbit

You can also create an instance of either class from a string, and the correct prefix will be deduced:

ByteSize bs = ByteSize::Parse("1kB");
std::cout << bs.ToString(1); // outputs 1.0 kB

Various methods exist to create an instance of either class from a given unit:

ByteSize bs = ByteSize::FromMegabytes(0.5);
std::cout << bs; // outputs 512 KiB

License

Released under MIT License.