64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
/**
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This file is a part of rexy's matrix client
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Copyright (C) 2019-2020 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef RAII_UTIL_HPP
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#define RAII_UTIL_HPP
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#include <rexy/string.hpp>
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namespace raii{
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namespace detail{
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size_t _calc_escaped_len(const char* str);
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char _escape_to_letter(char escape);
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size_t _sanitize_json_copy(char* dest, const char* in);
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template<class Tup, size_t I = 0>
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void _js_assign(char* dest, Tup&& t, size_t offset){
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size_t written = _sanitize_json_copy(dest+offset, std::get<I>(t));
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if constexpr(I+2 < std::tuple_size<std::remove_reference_t<Tup>>::value){
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_js_assign<Tup,I+2>(dest, std::forward<Tup>(t), offset+written);
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}
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}
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template<class T, size_t I = 0>
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size_t _calc_escaped_len_all(T&& t){
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size_t len = _calc_escaped_len(std::get<I>(t));
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if constexpr(I+2 < std::tuple_size<std::remove_reference_t<T>>::value){
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len += _calc_escaped_len_all<T,I+2>(std::forward<T>(t));
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}
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return len;
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}
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}
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template<class T, typename std::enable_if<rexy::detail::is_string<T>::value && !rexy::detail::is_concrete_string<T>::value,void>::type* = nullptr>
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rexy::string json_escape(T&& t){
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auto tup = t.get();
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size_t len = detail::_calc_escaped_len_all(tup);
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char* tmp = reinterpret_cast<char*>(rexy::string::allocator_type::allocate(len+1));
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detail::_js_assign(tmp, tup, 0);
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tmp[len] = 0;
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return rexy::string(tmp, len);
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}
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rexy::string json_escape(const rexy::string_base& str);
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size_t intlen(int i);
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rexy::string itostr(int i);
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}
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#endif
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