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1471 lines
46 KiB
C++
1471 lines
46 KiB
C++
// Copyright 2013 Daniel Parker
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// Distributed under the Boost license, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See https://github.com/danielaparker/jsoncons for latest version
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#ifndef JSONCONS_JSON_ENCODER_HPP
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#define JSONCONS_JSON_ENCODER_HPP
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#include <array> // std::array
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#include <string>
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#include <vector>
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#include <cmath> // std::isfinite, std::isnan
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#include <limits> // std::numeric_limits
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#include <memory>
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#include <utility> // std::move
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#include <jsoncons/json_exception.hpp>
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#include <jsoncons/byte_string.hpp>
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#include <jsoncons/bignum.hpp>
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#include <jsoncons/json_options.hpp>
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#include <jsoncons/json_error.hpp>
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#include <jsoncons/json_content_handler.hpp>
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#include <jsoncons/result.hpp>
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#include <jsoncons/detail/print_number.hpp>
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namespace jsoncons { namespace detail {
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template <class CharT, class Result>
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size_t escape_string(const CharT* s, size_t length,
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bool escape_all_non_ascii, bool escape_solidus,
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Result& result)
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{
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size_t count = 0;
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const CharT* begin = s;
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const CharT* end = s + length;
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for (const CharT* it = begin; it != end; ++it)
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{
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CharT c = *it;
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switch (c)
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{
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case '\\':
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result.push_back('\\');
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result.push_back('\\');
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count += 2;
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break;
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case '"':
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result.push_back('\\');
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result.push_back('\"');
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count += 2;
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break;
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case '\b':
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result.push_back('\\');
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result.push_back('b');
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count += 2;
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break;
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case '\f':
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result.push_back('\\');
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result.push_back('f');
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count += 2;
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break;
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case '\n':
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result.push_back('\\');
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result.push_back('n');
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count += 2;
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break;
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case '\r':
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result.push_back('\\');
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result.push_back('r');
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count += 2;
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break;
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case '\t':
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result.push_back('\\');
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result.push_back('t');
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count += 2;
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break;
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default:
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if (escape_solidus && c == '/')
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{
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result.push_back('\\');
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result.push_back('/');
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count += 2;
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}
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else if (is_control_character(c) || escape_all_non_ascii)
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{
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// convert utf8 to codepoint
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unicons::sequence_generator<const CharT*> g(it, end, unicons::conv_flags::strict);
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if (g.done() || g.status() != unicons::conv_errc())
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{
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throw ser_error(json_errc::illegal_codepoint);
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}
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uint32_t cp = g.get().codepoint();
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it += (g.get().length() - 1);
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if (is_non_ascii_codepoint(cp) || is_control_character(c))
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{
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if (cp > 0xFFFF)
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{
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cp -= 0x10000;
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uint32_t first = (cp >> 10) + 0xD800;
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uint32_t second = ((cp & 0x03FF) + 0xDC00);
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result.push_back('\\');
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result.push_back('u');
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result.push_back(to_hex_character(first >> 12 & 0x000F));
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result.push_back(to_hex_character(first >> 8 & 0x000F));
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result.push_back(to_hex_character(first >> 4 & 0x000F));
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result.push_back(to_hex_character(first & 0x000F));
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result.push_back('\\');
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result.push_back('u');
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result.push_back(to_hex_character(second >> 12 & 0x000F));
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result.push_back(to_hex_character(second >> 8 & 0x000F));
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result.push_back(to_hex_character(second >> 4 & 0x000F));
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result.push_back(to_hex_character(second & 0x000F));
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count += 12;
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}
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else
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{
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result.push_back('\\');
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result.push_back('u');
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result.push_back(to_hex_character(cp >> 12 & 0x000F));
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result.push_back(to_hex_character(cp >> 8 & 0x000F));
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result.push_back(to_hex_character(cp >> 4 & 0x000F));
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result.push_back(to_hex_character(cp & 0x000F));
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count += 6;
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}
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}
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else
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{
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result.push_back(c);
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++count;
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}
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}
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else
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{
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result.push_back(c);
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++count;
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}
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break;
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}
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}
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return count;
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}
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inline
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byte_string_chars_format resolve_byte_string_chars_format(byte_string_chars_format format1,
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byte_string_chars_format format2,
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byte_string_chars_format default_format = byte_string_chars_format::base64url)
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{
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byte_string_chars_format result;
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switch (format1)
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{
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case byte_string_chars_format::base16:
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case byte_string_chars_format::base64:
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case byte_string_chars_format::base64url:
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result = format1;
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break;
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default:
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switch (format2)
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{
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case byte_string_chars_format::base64url:
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case byte_string_chars_format::base64:
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case byte_string_chars_format::base16:
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result = format2;
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break;
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default: // base64url
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{
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result = default_format;
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break;
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}
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}
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break;
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}
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return result;
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}
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}}
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namespace jsoncons {
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template<class CharT,class Result=jsoncons::stream_result<CharT>>
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class basic_json_encoder final : public basic_json_content_handler<CharT>
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{
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static const std::array<CharT, 4>& null_k()
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{
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static constexpr std::array<CharT,4> k{'n','u','l','l'};
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return k;
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}
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static const std::array<CharT, 4>& true_k()
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{
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static constexpr std::array<CharT,4> k{'t','r','u','e'};
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return k;
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}
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static const std::array<CharT, 5>& false_k()
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{
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static constexpr std::array<CharT,5> k{'f','a','l','s','e'};
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return k;
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}
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public:
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typedef CharT char_type;
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using typename basic_json_content_handler<CharT>::string_view_type;
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typedef Result result_type;
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typedef typename basic_json_options<CharT>::string_type string_type;
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private:
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enum class container_type {object, array};
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class encoding_context
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{
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container_type type_;
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size_t count_;
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line_split_kind line_splits_;
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bool indent_before_;
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bool new_line_after_;
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size_t begin_pos_;
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size_t data_pos_;
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public:
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encoding_context(container_type type, line_split_kind split_lines, bool indent_once,
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size_t begin_pos, size_t data_pos)
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: type_(type), count_(0), line_splits_(split_lines), indent_before_(indent_once), new_line_after_(false),
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begin_pos_(begin_pos), data_pos_(data_pos)
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{
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}
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void set_position(size_t pos)
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{
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data_pos_ = pos;
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}
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size_t begin_pos() const
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{
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return begin_pos_;
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}
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size_t data_pos() const
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{
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return data_pos_;
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}
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size_t count() const
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{
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return count_;
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}
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void increment_count()
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{
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++count_;
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}
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bool new_line_after() const
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{
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return new_line_after_;
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}
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void new_line_after(bool value)
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{
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new_line_after_ = value;
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}
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bool is_object() const
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{
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return type_ == container_type::object;
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}
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bool is_array() const
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{
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return type_ == container_type::array;
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}
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bool is_same_line() const
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{
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return line_splits_ == line_split_kind::same_line;
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}
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bool is_new_line() const
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{
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return line_splits_ == line_split_kind::new_line;
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}
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bool is_multi_line() const
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{
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return line_splits_ == line_split_kind::multi_line;
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}
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bool is_indent_once() const
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{
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return count_ == 0 ? indent_before_ : false;
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}
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};
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size_t indent_size_;
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const basic_json_encode_options<CharT>& options_;
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jsoncons::detail::print_double fp_;
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Result result_;
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std::vector<encoding_context> stack_;
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int indent_amount_;
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size_t column_;
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std::basic_string<CharT> colon_str_;
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std::basic_string<CharT> comma_str_;
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std::basic_string<CharT> open_object_brace_str_;
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std::basic_string<CharT> close_object_brace_str_;
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std::basic_string<CharT> open_array_bracket_str_;
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std::basic_string<CharT> close_array_bracket_str_;
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// Noncopyable and nonmoveable
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basic_json_encoder(const basic_json_encoder&) = delete;
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basic_json_encoder& operator=(const basic_json_encoder&) = delete;
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public:
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basic_json_encoder(result_type result)
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: basic_json_encoder(std::move(result), basic_json_options<CharT>::default_options())
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{
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}
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basic_json_encoder(result_type result,
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const basic_json_encode_options<CharT>& options)
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: options_(options),
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fp_(floating_point_options(options.floating_point_format(),
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options.precision(),
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0)),
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result_(std::move(result)),
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indent_amount_(0),
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column_(0)
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{
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switch (options.spaces_around_colon())
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{
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case spaces_option::space_after:
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colon_str_ = std::basic_string<CharT>({':',' '});
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break;
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case spaces_option::space_before:
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colon_str_ = std::basic_string<CharT>({' ',':'});
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break;
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case spaces_option::space_before_and_after:
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colon_str_ = std::basic_string<CharT>({' ',':',' '});
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break;
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default:
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colon_str_.push_back(':');
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break;
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}
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switch (options.spaces_around_comma())
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{
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case spaces_option::space_after:
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comma_str_ = std::basic_string<CharT>({',',' '});
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break;
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case spaces_option::space_before:
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comma_str_ = std::basic_string<CharT>({' ',','});
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break;
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case spaces_option::space_before_and_after:
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comma_str_ = std::basic_string<CharT>({' ',',',' '});
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break;
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default:
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comma_str_.push_back(',');
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break;
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}
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if (options.pad_inside_object_braces())
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{
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open_object_brace_str_ = std::basic_string<CharT>({'{', ' '});
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close_object_brace_str_ = std::basic_string<CharT>({' ', '}'});
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}
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else
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{
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open_object_brace_str_.push_back('{');
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close_object_brace_str_.push_back('}');
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}
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if (options.pad_inside_array_brackets())
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{
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open_array_bracket_str_ = std::basic_string<CharT>({'[', ' '});
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close_array_bracket_str_ = std::basic_string<CharT>({' ', ']'});
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}
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else
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{
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open_array_bracket_str_.push_back('[');
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close_array_bracket_str_.push_back(']');
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}
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}
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~basic_json_encoder()
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{
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try
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{
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result_.flush();
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}
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catch (...)
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{
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}
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}
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private:
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// Implementing methods
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void do_flush() override
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{
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result_.flush();
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}
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bool do_begin_object(semantic_tag, const ser_context&) override
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{
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if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
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{
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result_.append(comma_str_.data(),comma_str_.length());
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column_ += comma_str_.length();
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}
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if (!stack_.empty()) // object or array
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{
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if (stack_.back().is_object())
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{
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switch (options_.object_object_line_splits())
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{
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case line_split_kind::same_line:
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if (column_ >= options_.line_length_limit())
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{
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break_line();
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}
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break;
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case line_split_kind::new_line:
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if (column_ >= options_.line_length_limit())
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{
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break_line();
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}
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break;
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default: // multi_line
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break;
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}
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stack_.emplace_back(container_type::object,options_.object_object_line_splits(), false,
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column_, column_+open_object_brace_str_.length());
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}
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else // array
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{
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switch (options_.array_object_line_splits())
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{
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case line_split_kind::same_line:
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if (column_ >= options_.line_length_limit())
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{
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//stack_.back().new_line_after(true);
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new_line();
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}
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break;
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case line_split_kind::new_line:
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stack_.back().new_line_after(true);
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new_line();
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break;
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default: // multi_line
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stack_.back().new_line_after(true);
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new_line();
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break;
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}
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stack_.emplace_back(container_type::object,options_.array_object_line_splits(), false,
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column_, column_+open_object_brace_str_.length());
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}
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}
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else
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{
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stack_.emplace_back(container_type::object, line_split_kind::multi_line, false,
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column_, column_+open_object_brace_str_.length());
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}
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indent();
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result_.append(open_object_brace_str_.data(), open_object_brace_str_.length());
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column_ += open_object_brace_str_.length();
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return true;
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}
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bool do_end_object(const ser_context&) override
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{
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JSONCONS_ASSERT(!stack_.empty());
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unindent();
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if (stack_.back().new_line_after())
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{
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new_line();
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}
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stack_.pop_back();
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result_.append(close_object_brace_str_.data(), close_object_brace_str_.length());
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column_ += close_object_brace_str_.length();
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end_value();
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return true;
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}
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bool do_begin_array(semantic_tag, const ser_context&) override
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{
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if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
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{
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result_.append(comma_str_.data(),comma_str_.length());
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column_ += comma_str_.length();
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}
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if (!stack_.empty())
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{
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if (stack_.back().is_object())
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{
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switch (options_.object_array_line_splits())
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{
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case line_split_kind::same_line:
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stack_.emplace_back(container_type::array,options_.object_array_line_splits(),false,
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column_, column_ + open_array_bracket_str_.length());
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break;
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case line_split_kind::new_line:
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{
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stack_.emplace_back(container_type::array,options_.object_array_line_splits(),true,
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column_, column_+open_array_bracket_str_.length());
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break;
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}
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default: // multi_line
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stack_.emplace_back(container_type::array,options_.object_array_line_splits(),true,
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column_, column_+open_array_bracket_str_.length());
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break;
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}
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}
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else // array
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{
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switch (options_.array_array_line_splits())
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{
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case line_split_kind::same_line:
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if (stack_.back().is_multi_line())
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{
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stack_.back().new_line_after(true);
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new_line();
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}
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stack_.emplace_back(container_type::array,options_.array_array_line_splits(), false,
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column_, column_+open_array_bracket_str_.length());
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break;
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case line_split_kind::new_line:
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stack_.back().new_line_after(true);
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new_line();
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stack_.emplace_back(container_type::array,options_.array_array_line_splits(), false,
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column_, column_+open_array_bracket_str_.length());
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break;
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default: // multi_line
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stack_.back().new_line_after(true);
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new_line();
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stack_.emplace_back(container_type::array,options_.array_array_line_splits(), false,
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column_, column_+open_array_bracket_str_.length());
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//new_line();
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break;
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}
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}
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}
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else
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{
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stack_.emplace_back(container_type::array, line_split_kind::multi_line, false,
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column_, column_+open_array_bracket_str_.length());
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}
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indent();
|
|
result_.append(open_array_bracket_str_.data(), open_array_bracket_str_.length());
|
|
column_ += open_array_bracket_str_.length();
|
|
return true;
|
|
}
|
|
|
|
bool do_end_array(const ser_context&) override
|
|
{
|
|
JSONCONS_ASSERT(!stack_.empty());
|
|
unindent();
|
|
if (stack_.back().new_line_after())
|
|
{
|
|
new_line();
|
|
}
|
|
stack_.pop_back();
|
|
result_.append(close_array_bracket_str_.data(), close_array_bracket_str_.length());
|
|
column_ += close_array_bracket_str_.length();
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_name(const string_view_type& name, const ser_context&) override
|
|
{
|
|
JSONCONS_ASSERT(!stack_.empty());
|
|
if (stack_.back().count() > 0)
|
|
{
|
|
result_.append(comma_str_.data(),comma_str_.length());
|
|
column_ += comma_str_.length();
|
|
}
|
|
|
|
if (stack_.back().is_multi_line())
|
|
{
|
|
stack_.back().new_line_after(true);
|
|
new_line();
|
|
}
|
|
else if (stack_.back().count() > 0 && column_ >= options_.line_length_limit())
|
|
{
|
|
//stack_.back().new_line_after(true);
|
|
new_line(stack_.back().data_pos());
|
|
}
|
|
|
|
if (stack_.back().count() == 0)
|
|
{
|
|
stack_.back().set_position(column_);
|
|
}
|
|
result_.push_back('\"');
|
|
size_t length = jsoncons::detail::escape_string(name.data(), name.length(),options_.escape_all_non_ascii(),options_.escape_solidus(),result_);
|
|
result_.push_back('\"');
|
|
result_.append(colon_str_.data(),colon_str_.length());
|
|
column_ += (length+2+colon_str_.length());
|
|
return true;
|
|
}
|
|
|
|
bool do_null_value(semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
|
|
result_.append(null_k().data(), null_k().size());
|
|
column_ += null_k().size();
|
|
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_string_value(const string_view_type& sv, semantic_tag tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
|
|
switch (tag)
|
|
{
|
|
case semantic_tag::bigint:
|
|
write_bigint_value(sv);
|
|
break;
|
|
default:
|
|
{
|
|
result_.push_back('\"');
|
|
size_t length = jsoncons::detail::escape_string(sv.data(), sv.length(),options_.escape_all_non_ascii(),options_.escape_solidus(),result_);
|
|
result_.push_back('\"');
|
|
column_ += (length+2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_byte_string_value(const byte_string_view& b,
|
|
semantic_tag tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
|
|
byte_string_chars_format encoding_hint;
|
|
switch (tag)
|
|
{
|
|
case semantic_tag::base16:
|
|
encoding_hint = byte_string_chars_format::base16;
|
|
break;
|
|
case semantic_tag::base64:
|
|
encoding_hint = byte_string_chars_format::base64;
|
|
break;
|
|
case semantic_tag::base64url:
|
|
encoding_hint = byte_string_chars_format::base64url;
|
|
break;
|
|
default:
|
|
encoding_hint = byte_string_chars_format::none;
|
|
break;
|
|
}
|
|
|
|
byte_string_chars_format format = jsoncons::detail::resolve_byte_string_chars_format(options_.byte_string_format(),
|
|
encoding_hint,
|
|
byte_string_chars_format::base64url);
|
|
switch (format)
|
|
{
|
|
case byte_string_chars_format::base16:
|
|
{
|
|
result_.push_back('\"');
|
|
size_t length = encode_base16(b.begin(),b.end(),result_);
|
|
result_.push_back('\"');
|
|
column_ += (length + 2);
|
|
break;
|
|
}
|
|
case byte_string_chars_format::base64:
|
|
{
|
|
result_.push_back('\"');
|
|
size_t length = encode_base64(b.begin(), b.end(), result_);
|
|
result_.push_back('\"');
|
|
column_ += (length + 2);
|
|
break;
|
|
}
|
|
case byte_string_chars_format::base64url:
|
|
{
|
|
result_.push_back('\"');
|
|
size_t length = encode_base64url(b.begin(),b.end(),result_);
|
|
result_.push_back('\"');
|
|
column_ += (length + 2);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
JSONCONS_UNREACHABLE();
|
|
}
|
|
}
|
|
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_double_value(double value,
|
|
semantic_tag,
|
|
const ser_context& context) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
|
|
if (!std::isfinite(value))
|
|
{
|
|
if ((std::isnan)(value))
|
|
{
|
|
if (options_.is_nan_to_num())
|
|
{
|
|
result_.append(options_.nan_to_num().data(), options_.nan_to_num().length());
|
|
column_ += options_.nan_to_num().length();
|
|
}
|
|
else if (options_.is_nan_to_str())
|
|
{
|
|
do_string_value(options_.nan_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
column_ += null_k().size();
|
|
}
|
|
}
|
|
else if (value == std::numeric_limits<double>::infinity())
|
|
{
|
|
if (options_.is_inf_to_num())
|
|
{
|
|
result_.append(options_.inf_to_num().data(), options_.inf_to_num().length());
|
|
column_ += options_.inf_to_num().length();
|
|
}
|
|
else if (options_.is_inf_to_str())
|
|
{
|
|
do_string_value(options_.inf_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
column_ += null_k().size();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (options_.is_neginf_to_num())
|
|
{
|
|
result_.append(options_.neginf_to_num().data(), options_.neginf_to_num().length());
|
|
column_ += options_.neginf_to_num().length();
|
|
}
|
|
else if (options_.is_neginf_to_str())
|
|
{
|
|
do_string_value(options_.neginf_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
column_ += null_k().size();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t length = fp_(value, result_);
|
|
column_ += length;
|
|
}
|
|
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_int64_value(int64_t value,
|
|
semantic_tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
size_t length = jsoncons::detail::print_integer(value, result_);
|
|
column_ += length;
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_uint64_value(uint64_t value,
|
|
semantic_tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
size_t length = jsoncons::detail::print_uinteger(value, result_);
|
|
column_ += length;
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
bool do_bool_value(bool value, semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().is_array())
|
|
{
|
|
begin_scalar_value();
|
|
}
|
|
if (!stack_.back().is_multi_line() && column_ >= options_.line_length_limit())
|
|
{
|
|
break_line();
|
|
}
|
|
}
|
|
|
|
if (value)
|
|
{
|
|
result_.append(true_k().data(), true_k().size());
|
|
column_ += true_k().size();
|
|
}
|
|
else
|
|
{
|
|
result_.append(false_k().data(), false_k().size());
|
|
column_ += false_k().size();
|
|
}
|
|
|
|
end_value();
|
|
return true;
|
|
}
|
|
|
|
void begin_scalar_value()
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
if (stack_.back().count() > 0)
|
|
{
|
|
result_.append(comma_str_.data(),comma_str_.length());
|
|
column_ += comma_str_.length();
|
|
}
|
|
if (stack_.back().is_multi_line() || stack_.back().is_indent_once())
|
|
{
|
|
stack_.back().new_line_after(true);
|
|
new_line();
|
|
}
|
|
}
|
|
}
|
|
|
|
void write_bigint_value(const string_view_type& sv)
|
|
{
|
|
switch (options_.bigint_format())
|
|
{
|
|
case bigint_chars_format::number:
|
|
{
|
|
result_.append(sv.data(),sv.size());
|
|
column_ += sv.size();
|
|
break;
|
|
}
|
|
case bigint_chars_format::base64:
|
|
{
|
|
bignum n(sv.data(), sv.length());
|
|
int signum;
|
|
std::vector<uint8_t> v;
|
|
n.dump(signum, v);
|
|
|
|
result_.push_back('\"');
|
|
if (signum == -1)
|
|
{
|
|
result_.push_back('~');
|
|
++column_;
|
|
}
|
|
size_t length = encode_base64(v.begin(), v.end(), result_);
|
|
result_.push_back('\"');
|
|
column_ += (length+2);
|
|
break;
|
|
}
|
|
case bigint_chars_format::base64url:
|
|
{
|
|
bignum n(sv.data(), sv.length());
|
|
int signum;
|
|
std::vector<uint8_t> v;
|
|
n.dump(signum, v);
|
|
|
|
result_.push_back('\"');
|
|
if (signum == -1)
|
|
{
|
|
result_.push_back('~');
|
|
++column_;
|
|
}
|
|
size_t length = encode_base64url(v.begin(), v.end(), result_);
|
|
result_.push_back('\"');
|
|
column_ += (length+2);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
result_.push_back('\"');
|
|
result_.append(sv.data(),sv.size());
|
|
result_.push_back('\"');
|
|
column_ += (sv.size() + 2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void end_value()
|
|
{
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
}
|
|
|
|
void indent()
|
|
{
|
|
indent_amount_ += static_cast<int>(options_.indent_size());
|
|
}
|
|
|
|
void unindent()
|
|
{
|
|
indent_amount_ -= static_cast<int>(options_.indent_size());
|
|
}
|
|
|
|
void new_line()
|
|
{
|
|
result_.append(options_.new_line_chars().data(),options_.new_line_chars().length());
|
|
for (int i = 0; i < indent_amount_; ++i)
|
|
{
|
|
result_.push_back(' ');
|
|
}
|
|
column_ = indent_amount_;
|
|
}
|
|
|
|
void new_line(size_t len)
|
|
{
|
|
result_.append(options_.new_line_chars().data(),options_.new_line_chars().length());
|
|
for (size_t i = 0; i < len; ++i)
|
|
{
|
|
result_.push_back(' ');
|
|
}
|
|
column_ = len;
|
|
}
|
|
|
|
void break_line()
|
|
{
|
|
stack_.back().new_line_after(true);
|
|
new_line();
|
|
}
|
|
};
|
|
|
|
template<class CharT,class Result=jsoncons::stream_result<CharT>>
|
|
class basic_json_compressed_encoder final : public basic_json_content_handler<CharT>
|
|
{
|
|
static const std::array<CharT, 4>& null_k()
|
|
{
|
|
static constexpr std::array<CharT,4> k{'n','u','l','l'};
|
|
return k;
|
|
}
|
|
static const std::array<CharT, 4>& true_k()
|
|
{
|
|
static constexpr std::array<CharT,4> k{'t','r','u','e'};
|
|
return k;
|
|
}
|
|
static const std::array<CharT, 5>& false_k()
|
|
{
|
|
static constexpr std::array<CharT,5> k{'f','a','l','s','e'};
|
|
return k;
|
|
}
|
|
public:
|
|
typedef CharT char_type;
|
|
using typename basic_json_content_handler<CharT>::string_view_type;
|
|
typedef Result result_type;
|
|
typedef typename basic_json_options<CharT>::string_type string_type;
|
|
|
|
private:
|
|
enum class container_type {object, array};
|
|
|
|
class encoding_context
|
|
{
|
|
container_type type_;
|
|
size_t count_;
|
|
public:
|
|
encoding_context(container_type type)
|
|
: type_(type), count_(0)
|
|
{
|
|
}
|
|
|
|
size_t count() const
|
|
{
|
|
return count_;
|
|
}
|
|
|
|
void increment_count()
|
|
{
|
|
++count_;
|
|
}
|
|
|
|
bool is_array() const
|
|
{
|
|
return type_ == container_type::array;
|
|
}
|
|
};
|
|
|
|
const basic_json_encode_options<CharT>& options_;
|
|
|
|
std::vector<encoding_context> stack_;
|
|
jsoncons::detail::print_double fp_;
|
|
Result result_;
|
|
|
|
// Noncopyable and nonmoveable
|
|
basic_json_compressed_encoder(const basic_json_compressed_encoder&) = delete;
|
|
basic_json_compressed_encoder& operator=(const basic_json_compressed_encoder&) = delete;
|
|
public:
|
|
basic_json_compressed_encoder(result_type result)
|
|
: basic_json_compressed_encoder(std::move(result), basic_json_options<CharT>::default_options())
|
|
{
|
|
}
|
|
|
|
basic_json_compressed_encoder(result_type result,
|
|
const basic_json_encode_options<CharT>& options)
|
|
: options_(options),
|
|
fp_(floating_point_options(options.floating_point_format(),
|
|
options.precision(),
|
|
0)),
|
|
result_(std::move(result))
|
|
{
|
|
}
|
|
|
|
~basic_json_compressed_encoder()
|
|
{
|
|
try
|
|
{
|
|
result_.flush();
|
|
}
|
|
catch (...)
|
|
{
|
|
}
|
|
}
|
|
|
|
|
|
private:
|
|
// Implementing methods
|
|
void do_flush() override
|
|
{
|
|
result_.flush();
|
|
}
|
|
|
|
bool do_begin_object(semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
stack_.emplace_back(container_type::object);
|
|
result_.push_back('{');
|
|
return true;
|
|
}
|
|
|
|
bool do_end_object(const ser_context&) override
|
|
{
|
|
JSONCONS_ASSERT(!stack_.empty());
|
|
stack_.pop_back();
|
|
result_.push_back('}');
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool do_begin_array(semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
stack_.emplace_back(container_type::array);
|
|
result_.push_back('[');
|
|
return true;
|
|
}
|
|
|
|
bool do_end_array(const ser_context&) override
|
|
{
|
|
JSONCONS_ASSERT(!stack_.empty());
|
|
stack_.pop_back();
|
|
result_.push_back(']');
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_name(const string_view_type& name, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
result_.push_back('\"');
|
|
jsoncons::detail::escape_string(name.data(), name.length(),options_.escape_all_non_ascii(),options_.escape_solidus(),result_);
|
|
result_.push_back('\"');
|
|
result_.push_back(':');
|
|
return true;
|
|
}
|
|
|
|
bool do_null_value(semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
result_.append(null_k().data(), null_k().size());
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void write_bigint_value(const string_view_type& sv)
|
|
{
|
|
switch (options_.bigint_format())
|
|
{
|
|
case bigint_chars_format::number:
|
|
{
|
|
result_.append(sv.data(),sv.size());
|
|
break;
|
|
}
|
|
case bigint_chars_format::base64:
|
|
{
|
|
bignum n(sv.data(), sv.length());
|
|
int signum;
|
|
std::vector<uint8_t> v;
|
|
n.dump(signum, v);
|
|
|
|
result_.push_back('\"');
|
|
if (signum == -1)
|
|
{
|
|
result_.push_back('~');
|
|
}
|
|
encode_base64(v.begin(), v.end(), result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
case bigint_chars_format::base64url:
|
|
{
|
|
bignum n(sv.data(), sv.length());
|
|
int signum;
|
|
std::vector<uint8_t> v;
|
|
n.dump(signum, v);
|
|
|
|
result_.push_back('\"');
|
|
if (signum == -1)
|
|
{
|
|
result_.push_back('~');
|
|
}
|
|
encode_base64url(v.begin(), v.end(), result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
result_.push_back('\"');
|
|
result_.append(sv.data(),sv.size());
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool do_string_value(const string_view_type& sv, semantic_tag tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
switch (tag)
|
|
{
|
|
case semantic_tag::bigint:
|
|
write_bigint_value(sv);
|
|
break;
|
|
default:
|
|
{
|
|
result_.push_back('\"');
|
|
jsoncons::detail::escape_string(sv.data(), sv.length(),options_.escape_all_non_ascii(),options_.escape_solidus(),result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_byte_string_value(const byte_string_view& b,
|
|
semantic_tag tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
byte_string_chars_format encoding_hint;
|
|
switch (tag)
|
|
{
|
|
case semantic_tag::base16:
|
|
encoding_hint = byte_string_chars_format::base16;
|
|
break;
|
|
case semantic_tag::base64:
|
|
encoding_hint = byte_string_chars_format::base64;
|
|
break;
|
|
case semantic_tag::base64url:
|
|
encoding_hint = byte_string_chars_format::base64url;
|
|
break;
|
|
default:
|
|
encoding_hint = byte_string_chars_format::none;
|
|
break;
|
|
}
|
|
|
|
byte_string_chars_format format = jsoncons::detail::resolve_byte_string_chars_format(options_.byte_string_format(),
|
|
encoding_hint,
|
|
byte_string_chars_format::base64url);
|
|
switch (format)
|
|
{
|
|
case byte_string_chars_format::base16:
|
|
{
|
|
result_.push_back('\"');
|
|
encode_base16(b.begin(),b.end(),result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
case byte_string_chars_format::base64:
|
|
{
|
|
result_.push_back('\"');
|
|
encode_base64(b.begin(), b.end(), result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
case byte_string_chars_format::base64url:
|
|
{
|
|
result_.push_back('\"');
|
|
encode_base64url(b.begin(),b.end(),result_);
|
|
result_.push_back('\"');
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
JSONCONS_UNREACHABLE();
|
|
}
|
|
}
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_double_value(double value,
|
|
semantic_tag,
|
|
const ser_context& context) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
if (JSONCONS_UNLIKELY(!std::isfinite(value)))
|
|
{
|
|
if ((std::isnan)(value))
|
|
{
|
|
if (options_.is_nan_to_num())
|
|
{
|
|
result_.append(options_.nan_to_num().data(), options_.nan_to_num().length());
|
|
}
|
|
else if (options_.is_nan_to_str())
|
|
{
|
|
do_string_value(options_.nan_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
}
|
|
}
|
|
else if (value == std::numeric_limits<double>::infinity())
|
|
{
|
|
if (options_.is_inf_to_num())
|
|
{
|
|
result_.append(options_.inf_to_num().data(), options_.inf_to_num().length());
|
|
}
|
|
else if (options_.is_inf_to_str())
|
|
{
|
|
do_string_value(options_.inf_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (options_.is_neginf_to_num())
|
|
{
|
|
result_.append(options_.neginf_to_num().data(), options_.neginf_to_num().length());
|
|
}
|
|
else if (options_.is_neginf_to_str())
|
|
{
|
|
do_string_value(options_.neginf_to_str(), semantic_tag::none, context);
|
|
}
|
|
else
|
|
{
|
|
result_.append(null_k().data(), null_k().size());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
fp_(value, result_);
|
|
}
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_int64_value(int64_t value,
|
|
semantic_tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
jsoncons::detail::print_integer(value, result_);
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_uint64_value(uint64_t value,
|
|
semantic_tag,
|
|
const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
jsoncons::detail::print_uinteger(value, result_);
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool do_bool_value(bool value, semantic_tag, const ser_context&) override
|
|
{
|
|
if (!stack_.empty() && stack_.back().is_array() && stack_.back().count() > 0)
|
|
{
|
|
result_.push_back(',');
|
|
}
|
|
|
|
if (value)
|
|
{
|
|
result_.append(true_k().data(), true_k().size());
|
|
}
|
|
else
|
|
{
|
|
result_.append(false_k().data(), false_k().size());
|
|
}
|
|
|
|
if (!stack_.empty())
|
|
{
|
|
stack_.back().increment_count();
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
typedef basic_json_encoder<char,jsoncons::stream_result<char>> json_encoder;
|
|
typedef basic_json_encoder<wchar_t,jsoncons::stream_result<wchar_t>> wjson_encoder;
|
|
|
|
typedef basic_json_compressed_encoder<char,jsoncons::stream_result<char>> json_compressed_encoder;
|
|
typedef basic_json_compressed_encoder<wchar_t,jsoncons::stream_result<wchar_t>> wjson_compressed_encoder;
|
|
|
|
typedef basic_json_encoder<char,jsoncons::string_result<std::string>> json_string_encoder;
|
|
typedef basic_json_encoder<wchar_t,jsoncons::string_result<std::wstring>> wjson_string_encoder;
|
|
|
|
typedef basic_json_compressed_encoder<char,jsoncons::string_result<std::string>> json_compressed_string_encoder;
|
|
typedef basic_json_compressed_encoder<wchar_t,jsoncons::string_result<std::wstring>> wjson_compressed_string_encoder;
|
|
|
|
#if !defined(JSONCONS_NO_DEPRECATED)
|
|
template<class CharT,class Result=jsoncons::stream_result<CharT>>
|
|
using basic_json_serializer = basic_json_encoder<CharT,Result>;
|
|
|
|
template<class CharT,class Result=jsoncons::stream_result<CharT>>
|
|
using basic_json_compressed_serializer = basic_json_compressed_encoder<CharT,Result>;
|
|
|
|
typedef basic_json_serializer<char,jsoncons::stream_result<char>> json_serializer;
|
|
typedef basic_json_serializer<wchar_t,jsoncons::stream_result<wchar_t>> wjson_encoder;
|
|
|
|
typedef basic_json_compressed_serializer<char,jsoncons::stream_result<char>> json_compressed_serializer;
|
|
typedef basic_json_compressed_serializer<wchar_t,jsoncons::stream_result<wchar_t>> wjson_compressed_serializer;
|
|
|
|
typedef basic_json_serializer<char,jsoncons::string_result<std::string>> json_string_serializer;
|
|
typedef basic_json_serializer<wchar_t,jsoncons::string_result<std::wstring>> wjson_string_serializer;
|
|
|
|
typedef basic_json_compressed_serializer<char,jsoncons::string_result<std::string>> json_compressed_string_serializer;
|
|
typedef basic_json_compressed_serializer<wchar_t,jsoncons::string_result<std::wstring>> wjson_compressed_string_serializer;
|
|
#endif
|
|
|
|
}
|
|
#endif
|