Utilities.h

#include <algorithm>
#include <cctype>
#include <locale>

// trim from start (in place)
static inline void ltrim(std::string &s)
{
	s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int ch) { return !std::isspace(ch); }));
}

// trim from end (in place)
static inline void rtrim(std::string &s)
{
	s.erase(std::find_if(s.rbegin(), s.rend(), [](int ch) { return !std::isspace(ch); }).base(), s.end());
}

// trim from both ends (in place)
static inline void trim(std::string &s)
{
	ltrim(s);
	rtrim(s);
}

// trim from start (copying)
static inline std::string ltrim_copy(std::string s)
{
	ltrim(s);
	return s;
}

// trim from end (copying)
static inline std::string rtrim_copy(std::string s)
{
	rtrim(s);
	return s;
}

// trim from both ends (copying)
static inline std::string trim_copy(std::string s)
{
	trim(s);
	return s;
}