string_format.h

/*
**  UICore
**  Copyright (c) 1997-2015 The UICore Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries UICore may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#pragma once

#include <vector>
#include <string>

namespace uicore
{
    class StringFormat
    {
    public:
        StringFormat(const std::string &format_string);

        const std::string &result() const;

        void set_arg(int index, const std::string &text);

        void set_arg(int index, int value, int min_length = 0);

        void set_arg(int index, unsigned int value, int min_length = 0);

        void set_arg(int index, long long value, int min_length = 0);

        void set_arg(int index, unsigned long long value, int min_length = 0);

        void set_arg(int index, float value);

        void set_arg(int index, double value);

    private:
        void create_arg(int index, int start, int length);

        std::string string;

        struct ArgPosition
        {
            ArgPosition() : start(0), length(-1) { }
            ArgPosition(int s, int l) : start(s), length(l) {}
            int start;
            int length;
        };

        std::vector<ArgPosition> args;
    };

    inline std::string string_format(const std::string &format)
    {
        return format;
    }

    template <class Arg1>
    std::string string_format(const std::string &format, Arg1 arg1)
    {
        StringFormat f(format); f.set_arg(1, arg1); return f.result();
    }

    template <class Arg1, class Arg2>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); return f.result();
    }

    template <class Arg1, class Arg2, class Arg3>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2, Arg3 arg3)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); f.set_arg(3, arg3); return f.result();
    }

    template <class Arg1, class Arg2, class Arg3, class Arg4>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); f.set_arg(3, arg3); f.set_arg(4, arg4); return f.result();
    }

    template <class Arg1, class Arg2, class Arg3, class Arg4, class Arg5>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4, Arg5 arg5)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); f.set_arg(3, arg3); f.set_arg(4, arg4); f.set_arg(5, arg5); return f.result();
    }

    template <class Arg1, class Arg2, class Arg3, class Arg4, class Arg5, class Arg6>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4, Arg5 arg5, Arg6 arg6)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); f.set_arg(3, arg3); f.set_arg(4, arg4); f.set_arg(5, arg5); f.set_arg(6, arg6); return f.result();
    }

    template <class Arg1, class Arg2, class Arg3, class Arg4, class Arg5, class Arg6, class Arg7>
    std::string string_format(const std::string &format, Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4, Arg5 arg5, Arg6 arg6, Arg7 arg7)
    {
        StringFormat f(format); f.set_arg(1, arg1); f.set_arg(2, arg2); f.set_arg(3, arg3); f.set_arg(4, arg4); f.set_arg(5, arg5); f.set_arg(6, arg6); f.set_arg(7, arg7); return f.result();
    }
}