#pragma once

#include <algorithm>
#include <cctype>
#include <string>


class StringUtil
{
public:
    // 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(std::string s) {
        ltrim(&s);
        return std::move(s);
    }

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

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


extern
int vasprintf(char** strp, const char* fmt, va_list ap);

extern
int asprintf(char** strp, const char* fmt, ...);