/
numbers.h
50 lines (46 loc) · 2.09 KB
/
numbers.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
/**************************************************************************/
/* */
/* WWIV Version 5.x */
/* Copyright (C)2020-2022, WWIV Software Services */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, */
/* software distributed under the License is distributed on an */
/* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, */
/* either express or implied. See the License for the specific */
/* language governing permissions and limitations under the License. */
/* */
/**************************************************************************/
#ifndef INCLUDED_WWIV_CORE_NUMBERS_H
#define INCLUDED_WWIV_CORE_NUMBERS_H
#include "core/strings.h"
#include <string>
template<typename T>
T bytes_to_k(T b) {
if (b <= 0) {
return static_cast<T>(0);
}
return static_cast<T>((b + 1023) / 1024);
}
template<typename T>
std::string humanize(T num) {
static constexpr T KB = 1024;
static constexpr T MB = KB * 1024;
static constexpr T GB = MB * 1024;
if (num >= GB) {
return wwiv::strings::StrCat(std::to_string(num / GB), "G");
}
if (num >= MB) {
return wwiv::strings::StrCat(std::to_string(num / MB), "M");
}
if (num >= KB) {
return wwiv::strings::StrCat(std::to_string(num / KB), "k");
}
return wwiv::strings::StrCat(std::to_string(bytes_to_k(num)), "k");
}
#endif