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#pragma once
#include <cctype>
#include <algorithm>
#include <cstdlib>
#include <vector>
#include <functional>
#include <iterator>
#include <sstream>
#include <string>
#include <iomanip>
template<typename T>
struct Bitwise {
static const bool enable = false;
};
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator|(T a, T b) {
using x = typename std::underlying_type<T>::type;
return static_cast<T>(static_cast<x>(a) | static_cast<x>(b));
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator|=(T &a, T b) {
using x = typename std::underlying_type<T>::type;
a = static_cast<T>(static_cast<x>(a) | static_cast<x>(b));
return a;
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator&(T a, T b) {
using x = typename std::underlying_type<T>::type;
return static_cast<T>(static_cast<x>(a) & static_cast<x>(b));
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator&=(T &a, T b) {
using x = typename std::underlying_type<T>::type;
a = static_cast<T>(static_cast<x>(a) & static_cast<x>(b));
return a;
}
template<typename T>
typename std::enable_if<Bitwise<T>::enable, T>::type operator~(T a) {
return static_cast<T>(~static_cast<std::underlying_type<T>::type>(a));
}
template<typename T>
inline void AlphabeticalSort(T start, T end, std::function<std::string(const typename std::iterator_traits<T>::value_type &)> get_string) {
std::sort(start, end, [&](const auto &a, const auto &b) -> bool {
const std::string &s1 = get_string(a);
const std::string &s2 = get_string(b);
if (s1.empty() || s2.empty())
return s1 < s2;
bool ac[] = {
!isalnum(s1[0]),
!isalnum(s2[0]),
!!isdigit(s1[0]),
!!isdigit(s2[0]),
!!isalpha(s1[0]),
!!isalpha(s2[0]),
};
if ((ac[0] && ac[1]) || (ac[2] && ac[3]) || (ac[4] && ac[5]))
return s1 < s2;
return ac[0] || ac[5];
});
}
inline std::string IntToCSSColor(int color) {
int r = (color & 0xFF0000) >> 16;
int g = (color & 0x00FF00) >> 8;
int b = (color & 0x0000FF) >> 0;
std::stringstream ss;
ss << std::hex << std::setw(2) << std::setfill('0') << r
<< std::hex << std::setw(2) << std::setfill('0') << g
<< std::hex << std::setw(2) << std::setfill('0') << b;
return ss.str();
}
// https://www.compuphase.com/cmetric.htm
inline double ColorDistance(int c1, int c2) {
int r1 = (c1 & 0xFF0000) >> 16;
int g1 = (c1 & 0x00FF00) >> 8;
int b1 = (c1 & 0x0000FF) >> 0;
int r2 = (c2 & 0xFF0000) >> 16;
int g2 = (c2 & 0x00FF00) >> 8;
int b2 = (c2 & 0x0000FF) >> 0;
int rmean = (r1 - r2) / 2;
int r = r1 - r2;
int g = g1 - g2;
int b = b1 - b2;
return sqrt((((512 + rmean) * r * r) >> 8) + 4 * g * g + (((767 - rmean) * b * b) >> 8));
}
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