trim.hpp

/*
 * trim.hpp
 * Author: Evan Teran
 * https://stackoverflow.com/a/217605
 */

#ifndef INCLUDE_TRIM_HPP_
#define INCLUDE_TRIM_HPP_

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

// trim from start
static inline std::wstring& ltrim(std::wstring& s) {
    s.erase(
        s.begin(),
        std::find_if(
            s.begin(),
            s.end(),
            std::not1(std::ptr_fun<int, int>(std::isspace))
        )
    );
    return s;
}

// trim from end
static inline std::wstring& rtrim(std::wstring& s) {
    s.erase(
        std::find_if(
            s.rbegin(),
            s.rend(),
            std::not1(std::ptr_fun<int, int>(std::isspace))
        ).base(),
        s.end()
    );
    return s;
}

// trim from both ends
static inline std::wstring& trim(std::wstring& s) {
    return ltrim(rtrim(s));
}



// trim from start
static inline std::string& ltrim(std::string& s) {
    s.erase(
        s.begin(),
        std::find_if(
            s.begin(),
            s.end(),
            std::not1(std::ptr_fun<int, int>(std::isspace))
        )
    );
    return s;
}

// trim from end
static inline std::string& rtrim(std::string& s) {
    s.erase(
        std::find_if(
            s.rbegin(),
            s.rend(),
            std::not1(std::ptr_fun<int, int>(std::isspace))
        ).base(),
        s.end()
    );
    return s;
}

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

#endif /* INCLUDE_TRIM_HPP_ */