ByteSizeCPP

ByteSizeCPP is a C++11 library that handles how byte sizes are represented while adopting the International Electrotechnical Commission (IEC) proposed standard (kibi, mebi, gibi etc.) and also providing an easy to use interface for conversion from one form of representation to the other.

The ToString Function

There are two functions that can help you convert ByteSize objects to string:

> ToString(ByteSizeUnit unit_repr = BinaryUnit, int precision = 2)
> ToString(string unit, int precision = 2)

Both functions throw the FormatException if the precision is a negetive value. Also, if the input string unit is incorrectly formatted.

Where:
	ByteSizeUnit representation is an enum { BinaryUnit, DecimalUnit }
	also,
	precision > 0, returns a decimal value 
	precision == 0, returns a non decimal value
	precision < 0, throws the `FormatException`

The Parse and TryParse Function

These are two static functions for parsing of input string to ByteSize objects:

> ByteSize Parse(string s);

Throws the FormatException if input string is incorrectly formatted.

> bool TryParse(string s, ByteSize &bs)

Returns false if input string is incorrectly formatted and true if good and stores the newly created ByteSize object in bs, which is passed by reference to the function.

All The Acceptable Input String Unit Formats

Here are all the acceptable input string unit formats:

"b" => Bit
"B" => Byte 
"KiB" => KibiByte 
"KB" => KiloByte
"MiB" => MebiByte 
"MB" => MegaByte
"GiB" => GibiByte 
"GB" => GigaByte
"TiB" => TebiByte
"TB" => TeraByte
"PiB" => PebiByte 
"PB" => PetaByte
"EiB" => ExbiByte
"EB" => ExaByte

All symbols between parenthesis are good. Also, be careful about the case-sentivity when it comes to b and B.

Example

#include "ByteSize.h"
#include <iostream>

using namespace std;

int main()
{
  ByteSize b1 = ByteSize::FromBits(1200);
  ByteSize b2 = ByteSize::FromBytes(1200);

  ByteSize b3 = b1 + b2;

  ByteSize b4 = b3.AddMebiBytes(10.04);

  ByteSize b5 = ByteSize::Parse("13.5MiB");

  int check = b4.CompareTo(b5); // -1

  cout << b4.ToString("mb", 0) << endl; // 11 MB
  cout << b5.ToString("GB", 5) << endl; // 0.01416 GB

  return 0;
}

Tested Enviroments:

Visual Studio 2019.

Unit Tests:

To run the unit tests, you should have boost library installed in your workstation. You can also follow this guide to help install boost library properly on your computer.

License

Copyright (c) 2018 - 2022 Mbadiwe Nnaemeka Ronald ron2tele@gmail.com

This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation must be
specified.

2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Tip Jar

• 💵 Bitcoin: 1Mcci95WffSJnV6PsYG7KD1af1gDfUvLe6

Conclusion

Special thanks to Xor-el for making this library available in the first place.