util.h

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#pragma once
#include <algorithm>
#include <functional>
#include <iostream>
#include <iterator>
#include <locale>
#include <sstream>
#include <vector>
 
namespace ga {
 
// string utilities
// ----------------------
 
inline std::vector<std::string> splitString( const std::string& str, char delim = ' ' )
{
    std::vector<std::string> result;
    std::stringstream ss( str );
    std::string token;
    while ( std::getline( ss, token, delim ) ) {
        result.push_back( token );
    }
    return result;
}
 
inline std::string toLower( std::string str )
{
    std::transform( str.begin(), str.end(), str.begin(), []( char c ) { return std::tolower( c, std::locale() ); } );
    return str;
}
 
inline std::string toUpper( std::string str )
{
    std::transform( str.begin(), str.end(), str.begin(), []( char c ) { return std::toupper( c, std::locale() ); } );
 
    return str;
}
 
// Helper RAII class to auto cleanup / do something on early return
struct scope_guard
{
    scope_guard( const std::function<void()>& f )
        : _f( f )
    {
    }
    ~scope_guard()
    {
        if ( _f )
            _f();
    }
 
protected:
    std::function<void()> _f;
};
 
}  // namespace ga