// Copyright 2013-2023 Daniel Parker
// Distributed under the Boost license, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// See https://github.com/danielaparker/jsoncons for latest version

#ifndef JSONCONS_JSONPATH_UTILITIES_HPP
#define JSONCONS_JSONPATH_UTILITIES_HPP

#include <string>
#include <vector>
#include <memory>
#include <type_traits> // std::is_const
#include <limits> // std::numeric_limits
#include <utility> // std::move
#include <algorithm> // std::copy
#include <iterator> // std::back_inserter

namespace jsoncons { namespace jsonpath {

    template <class CharT, class Sink>
    std::size_t escape_string(const CharT* s, std::size_t length, Sink& sink)
    {
        std::size_t count = 0;
        const CharT* begin = s;
        const CharT* end = s + length;
        for (const CharT* it = begin; it != end; ++it)
        {
            CharT c = *it;
            switch (c)
            {
                case '\\':
                    sink.push_back('\\');
                    sink.push_back('\\');
                    count += 2;
                    break;
                case '\'':
                    sink.push_back('\\');
                    sink.push_back('\'');
                    count += 2;
                    break;
                case '\b':
                    sink.push_back('\\');
                    sink.push_back('b');
                    count += 2;
                    break;
                case '\f':
                    sink.push_back('\\');
                    sink.push_back('f');
                    count += 2;
                    break;
                case '\n':
                    sink.push_back('\\');
                    sink.push_back('n');
                    count += 2;
                    break;
                case '\r':
                    sink.push_back('\\');
                    sink.push_back('r');
                    count += 2;
                    break;
                case '\t':
                    sink.push_back('\\');
                    sink.push_back('t');
                    count += 2;
                    break;
                default:
                    sink.push_back(c);
                    ++count;
                    break;
            }
        }
        return count;
    }
}}

#endif