diff --git a/src/json.hpp b/src/json.hpp
index 866d322f..82f4cd42 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -6121,11 +6121,11 @@ class basic_json
/// @}
- /////////////////////////
- // MessagePack support //
- /////////////////////////
+ //////////////////////////////////////////
+ // binary serialization/deserialization //
+ //////////////////////////////////////////
- /// @name MessagePack support
+ /// @name binary serialization/deserialization support
/// @{
private:
@@ -6360,6 +6360,334 @@ class basic_json
}
}
+ static void to_cbor_internal(const basic_json& j, std::vector<uint8_t>& v)
+ {
+ switch (j.type())
+ {
+ case value_t::null:
+ {
+ v.push_back(0xf6);
+ break;
+ }
+
+ case value_t::boolean:
+ {
+ v.push_back(j.m_value.boolean ? 0xf5 : 0xf4);
+ break;
+ }
+
+ case value_t::number_integer:
+ {
+ if (j.m_value.number_integer >= 0)
+ {
+ // CBOR does not differentiate between positive signed
+ // integers and unsigned integers. Therefore, we used the
+ // code from the value_t::number_unsigned case here.
+ if (j.m_value.number_integer < 0x17)
+ {
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer));
+ }
+ else if (j.m_value.number_integer <= UINT8_MAX)
+ {
+ v.push_back(0x18);
+ // one-byte uint8_t
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer));
+ }
+ else if (j.m_value.number_integer <= UINT16_MAX)
+ {
+ v.push_back(0x19);
+ // two-byte uint16_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ else if (j.m_value.number_integer <= UINT32_MAX)
+ {
+ v.push_back(0x1a);
+ // four-byte uint32_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ else if (j.m_value.number_integer <= UINT64_MAX)
+ {
+ v.push_back(0xcf);
+ // eight-byte uint64_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ }
+ else
+ {
+ // The conversions below encode the sign in the first byte,
+ // and the value is converted to a positive number.
+ const auto positive_number = -1 - j.m_value.number_integer;
+ if (j.m_value.number_integer <= -1 and j.m_value.number_integer >= -24)
+ {
+ v.push_back(static_cast<uint8_t>(0x20 + positive_number));
+ }
+ else if (positive_number <= UINT8_MAX)
+ {
+ // int 8
+ v.push_back(0x38);
+ v.push_back(static_cast<uint8_t>(positive_number));
+ }
+ else if (positive_number <= UINT16_MAX)
+ {
+ // int 16
+ v.push_back(0x39);
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ else if (positive_number <= UINT32_MAX)
+ {
+ // int 32
+ v.push_back(0x3a);
+ v.push_back(static_cast<uint8_t>((positive_number >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ else if (positive_number <= UINT64_MAX)
+ {
+ // int 64
+ v.push_back(0x3b);
+ v.push_back(static_cast<uint8_t>((positive_number >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ break;
+ }
+ }
+
+ case value_t::number_unsigned:
+ {
+ if (j.m_value.number_unsigned < 0x17)
+ {
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned));
+ }
+ else if (j.m_value.number_unsigned <= 0xff)
+ {
+ v.push_back(0x18);
+ // one-byte uint8_t
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned));
+ }
+ else if (j.m_value.number_unsigned <= 0xffff)
+ {
+ v.push_back(0x19);
+ // two-byte uint16_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ else if (j.m_value.number_unsigned <= 0xffffffff)
+ {
+ v.push_back(0x1a);
+ // four-byte uint32_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ else if (j.m_value.number_unsigned <= 0xffffffffffffffff)
+ {
+ v.push_back(0xcf);
+ // eight-byte uint64_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ break;
+ }
+
+ case value_t::number_float:
+ {
+ // Double-Precision Float
+ v.push_back(0xfb);
+ const uint8_t* helper = reinterpret_cast<const uint8_t*>(&(j.m_value.number_float));
+ for (size_t i = 0; i < 8; ++i)
+ {
+ v.push_back(helper[7 - i]);
+ }
+ break;
+ }
+
+ case value_t::string:
+ {
+ const auto N = j.m_value.string->size();
+ if (N <= 0x17)
+ {
+ v.push_back(0x60 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0x78);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0x79);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0x7a);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0x7b);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append string
+ std::copy(j.m_value.string->begin(), j.m_value.string->end(),
+ std::back_inserter(v));
+ break;
+ }
+
+ case value_t::array:
+ {
+ const auto N = j.m_value.array->size();
+ if (N <= 0x17)
+ {
+ // 1 byte for array + size
+ v.push_back(0x80 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0x98);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0x99);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0x9a);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0x9b);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append each element
+ for (const auto& el : *j.m_value.array)
+ {
+ to_cbor_internal(el, v);
+ }
+ break;
+ }
+
+ case value_t::object:
+ {
+ const auto N = j.m_value.object->size();
+ if (N <= 0x17)
+ {
+ // 1 byte for array + size
+ v.push_back(0xa0 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0xb8);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0xb9);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0xba);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0xbb);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append each element
+ for (const auto& el : *j.m_value.object)
+ {
+ to_cbor_internal(el.first, v);
+ to_cbor_internal(el.second, v);
+ }
+ break;
+ }
+
+ default:
+ {
+ break;
+ }
+ }
+ }
+
/*!
@param[in] v MessagePack serialization
@param[in] idx byte index to start reading from @a v
@@ -6595,6 +6923,323 @@ class basic_json
throw std::invalid_argument("error parsing a msgpack @ " + std::to_string(current_idx));
}
+ static basic_json from_cbor_internal(const std::vector<uint8_t>& v, size_t& idx)
+ {
+ // store and increment index
+ const size_t current_idx = idx++;
+
+ if (v[current_idx] <= 0x17) // Integer 0x00..0x17
+ {
+ return v[current_idx];
+ }
+ else if (v[current_idx] == 0x18) // Unsigned integer uint8_t
+ {
+ idx += 1; // skip content byte
+ return v[current_idx + 1];
+ }
+ else if (v[current_idx] == 0x19) // Unsigned integer uint16_t
+ {
+ idx += 2; // skip 2 content bytes
+ return static_cast<uint16_t>((static_cast<uint16_t>(v[current_idx + 1]) << 010) +
+ static_cast<uint16_t>(v[current_idx + 2]));
+ }
+ else if (v[current_idx] == 0x1a) // Unsigned integer uint32_t
+ {
+ idx += 4; // skip 4 content bytes
+ return static_cast<uint32_t>((static_cast<uint32_t>(v[current_idx + 1]) << 030) +
+ (static_cast<uint32_t>(v[current_idx + 2]) << 020) +
+ (static_cast<uint32_t>(v[current_idx + 3]) << 010) +
+ static_cast<uint32_t>(v[current_idx + 4]));
+ }
+ else if (v[current_idx] == 0x1b) // Unsigned integer uint64_t
+ {
+ idx += 8; // skip 8 content bytes
+ return static_cast<uint64_t>((static_cast<uint64_t>(v[current_idx + 1]) << 070) +
+ (static_cast<uint64_t>(v[current_idx + 2]) << 060) +
+ (static_cast<uint64_t>(v[current_idx + 3]) << 050) +
+ (static_cast<uint64_t>(v[current_idx + 4]) << 040) +
+ (static_cast<uint64_t>(v[current_idx + 5]) << 030) +
+ (static_cast<uint64_t>(v[current_idx + 6]) << 020) +
+ (static_cast<uint64_t>(v[current_idx + 7]) << 010) +
+ static_cast<uint64_t>(v[current_idx + 8]));
+ }
+ else if (v[current_idx] >= 0x20 and v[current_idx] <= 0x37) // Negative integer
+ {
+ return static_cast<int8_t>(0x20 - 1 - v[current_idx]);
+ }
+ else if (v[current_idx] == 0x38) // Negative integer
+ {
+ idx += 1; // skip content byte
+ return static_cast<int16_t>(-1 - v[current_idx + 1]);
+ }
+ else if (v[current_idx] == 0x39) // Negative integer
+ {
+ idx += 2; // skip 2 content bytes
+ return -1 - static_cast<int16_t>((static_cast<int16_t>(v[current_idx + 1]) << 010) +
+ static_cast<int16_t>(v[current_idx + 2]));
+ }
+ else if (v[current_idx] == 0x3a) // Negative integer
+ {
+ idx += 4; // skip 4 content bytes
+ return -1 - static_cast<int32_t>((static_cast<int32_t>(v[current_idx + 1]) << 030) +
+ (static_cast<int32_t>(v[current_idx + 2]) << 020) +
+ (static_cast<int32_t>(v[current_idx + 3]) << 010) +
+ static_cast<int32_t>(v[current_idx + 4]));
+ }
+ else if (v[current_idx] == 0x3b) // Negative integer
+ {
+ idx += 8; // skip 8 content bytes
+ return -1 - static_cast<int64_t>((static_cast<int64_t>(v[current_idx + 1]) << 070) +
+ (static_cast<int64_t>(v[current_idx + 2]) << 060) +
+ (static_cast<int64_t>(v[current_idx + 3]) << 050) +
+ (static_cast<int64_t>(v[current_idx + 4]) << 040) +
+ (static_cast<int64_t>(v[current_idx + 5]) << 030) +
+ (static_cast<int64_t>(v[current_idx + 6]) << 020) +
+ (static_cast<int64_t>(v[current_idx + 7]) << 010) +
+ static_cast<int64_t>(v[current_idx + 8]));
+ }
+ else if (v[current_idx] >= 0x60 and v[current_idx] <= 0x77) // UTF-8 string
+ {
+ const size_t len = v[current_idx] - 0x60;
+ const size_t offset = current_idx + 1;
+ idx += len; // skip content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x78) // UTF-8 string
+ {
+ const size_t len = v[current_idx + 1];
+ const size_t offset = current_idx + 2;
+ idx += len + 1; // skip size byte + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x79) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) + v[current_idx + 2]);
+ const size_t offset = current_idx + 3;
+ idx += len + 2; // skip 2 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x7a) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ const size_t offset = current_idx + 5;
+ idx += len + 4; // skip 4 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x7b) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ const size_t offset = current_idx + 5;
+ idx += len + 4; // skip 4 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] >= 0x80 and v[current_idx] <= 0x97) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = v[current_idx] - 0x80;
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x98) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>(v[current_idx + 1]);
+ idx += 1; // skip 1 size byte
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x99) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) +
+ v[current_idx + 2]);
+ idx += 2; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x9a) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ idx += 4; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x9b) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ idx += 8; // skip 8 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] >= 0xa0 and v[current_idx] <= 0xb7) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = v[current_idx] - 0xa0;
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xb8) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>(v[current_idx + 1]);
+ idx += 1; // skip 1 size byte
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xb9) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) +
+ v[current_idx + 2]);
+ idx += 2; // skip 2 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xba) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ idx += 4; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xbb) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ idx += 8; // skip 8 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xf4) // false
+ {
+ return false;
+ }
+ else if (v[current_idx] == 0xf5) // true
+ {
+ return true;
+ }
+ else if (v[current_idx] == 0xf6) // null
+ {
+ return value_t::null;
+ }
+ else if (v[current_idx] == 0xfa) // Single-Precision Float
+ {
+ // copy bytes in reverse order into the float variable
+ float res;
+ for (size_t byte = 0; byte < sizeof(float); ++byte)
+ {
+ reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
+ }
+ idx += sizeof(float); // skip content bytes
+ return res;
+ }
+ else if (v[current_idx] == 0xfb) // Double-Precision Float
+ {
+ // copy bytes in reverse order into the double variable
+ double res;
+ for (size_t byte = 0; byte < sizeof(double); ++byte)
+ {
+ reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
+ }
+ idx += sizeof(double); // skip content bytes
+ return res;
+ }
+
+ // 40..57 byte string
+ // 58 byte string
+ // 59 byte string
+ // 5a byte string
+ // 5b byte string
+ // 5f byte string
+ // 7f UTF-8 string with break
+ // 9f array with break
+ // bf map with break
+ // c0 Text-based date/time
+ // c1 Epoch-based date/time
+ // c2 Positive bignum
+ // c3 Positive bignum
+ // c4 Decimal Fraction
+ // c5 Bigfloat
+ // c6..d4 tagged item
+ // d5..d7 Expected Conversion
+ // d8..db more tagged items
+ // e0..f3 simple value
+ // f7 undefined
+ // f8 simple value
+ // f9 half-precision float
+ // ff break stop code
+
+ throw std::invalid_argument("error parsing a CBOR @ " + std::to_string(current_idx) + ": " + std::to_string(v[current_idx]));
+ }
+
public:
/*!
@param[in] j JSON value to serialize
@@ -6613,6 +7258,23 @@ class basic_json
return from_msgpack_internal(v, i);
}
+ /*!
+ @param[in] j JSON value to serialize
+ @retuen CBOR serialization as char vector
+ */
+ static std::vector<uint8_t> to_cbor(const basic_json& j)
+ {
+ std::vector<uint8_t> result;
+ to_cbor_internal(j, result);
+ return result;
+ }
+
+ static basic_json from_cbor(const std::vector<uint8_t>& v)
+ {
+ size_t i = 0;
+ return from_cbor_internal(v, i);
+ }
+
/// @}
private:
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index f6f5d24c..491614ae 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -6121,11 +6121,11 @@ class basic_json
/// @}
- /////////////////////////
- // MessagePack support //
- /////////////////////////
+ //////////////////////////////////////////
+ // binary serialization/deserialization //
+ //////////////////////////////////////////
- /// @name MessagePack support
+ /// @name binary serialization/deserialization support
/// @{
private:
@@ -6360,6 +6360,334 @@ class basic_json
}
}
+ static void to_cbor_internal(const basic_json& j, std::vector<uint8_t>& v)
+ {
+ switch (j.type())
+ {
+ case value_t::null:
+ {
+ v.push_back(0xf6);
+ break;
+ }
+
+ case value_t::boolean:
+ {
+ v.push_back(j.m_value.boolean ? 0xf5 : 0xf4);
+ break;
+ }
+
+ case value_t::number_integer:
+ {
+ if (j.m_value.number_integer >= 0)
+ {
+ // CBOR does not differentiate between positive signed
+ // integers and unsigned integers. Therefore, we used the
+ // code from the value_t::number_unsigned case here.
+ if (j.m_value.number_integer < 0x17)
+ {
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer));
+ }
+ else if (j.m_value.number_integer <= UINT8_MAX)
+ {
+ v.push_back(0x18);
+ // one-byte uint8_t
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer));
+ }
+ else if (j.m_value.number_integer <= UINT16_MAX)
+ {
+ v.push_back(0x19);
+ // two-byte uint16_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ else if (j.m_value.number_integer <= UINT32_MAX)
+ {
+ v.push_back(0x1a);
+ // four-byte uint32_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ else if (j.m_value.number_integer <= UINT64_MAX)
+ {
+ v.push_back(0xcf);
+ // eight-byte uint64_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_integer >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_integer & 0xff));
+ }
+ }
+ else
+ {
+ // The conversions below encode the sign in the first byte,
+ // and the value is converted to a positive number.
+ const auto positive_number = -1 - j.m_value.number_integer;
+ if (j.m_value.number_integer <= -1 and j.m_value.number_integer >= -24)
+ {
+ v.push_back(static_cast<uint8_t>(0x20 + positive_number));
+ }
+ else if (positive_number <= UINT8_MAX)
+ {
+ // int 8
+ v.push_back(0x38);
+ v.push_back(static_cast<uint8_t>(positive_number));
+ }
+ else if (positive_number <= UINT16_MAX)
+ {
+ // int 16
+ v.push_back(0x39);
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ else if (positive_number <= UINT32_MAX)
+ {
+ // int 32
+ v.push_back(0x3a);
+ v.push_back(static_cast<uint8_t>((positive_number >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ else if (positive_number <= UINT64_MAX)
+ {
+ // int 64
+ v.push_back(0x3b);
+ v.push_back(static_cast<uint8_t>((positive_number >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((positive_number >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(positive_number & 0xff));
+ }
+ break;
+ }
+ }
+
+ case value_t::number_unsigned:
+ {
+ if (j.m_value.number_unsigned < 0x17)
+ {
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned));
+ }
+ else if (j.m_value.number_unsigned <= 0xff)
+ {
+ v.push_back(0x18);
+ // one-byte uint8_t
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned));
+ }
+ else if (j.m_value.number_unsigned <= 0xffff)
+ {
+ v.push_back(0x19);
+ // two-byte uint16_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ else if (j.m_value.number_unsigned <= 0xffffffff)
+ {
+ v.push_back(0x1a);
+ // four-byte uint32_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ else if (j.m_value.number_unsigned <= 0xffffffffffffffff)
+ {
+ v.push_back(0xcf);
+ // eight-byte uint64_t
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((j.m_value.number_unsigned >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(j.m_value.number_unsigned & 0xff));
+ }
+ break;
+ }
+
+ case value_t::number_float:
+ {
+ // Double-Precision Float
+ v.push_back(0xfb);
+ const uint8_t* helper = reinterpret_cast<const uint8_t*>(&(j.m_value.number_float));
+ for (size_t i = 0; i < 8; ++i)
+ {
+ v.push_back(helper[7 - i]);
+ }
+ break;
+ }
+
+ case value_t::string:
+ {
+ const auto N = j.m_value.string->size();
+ if (N <= 0x17)
+ {
+ v.push_back(0x60 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0x78);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0x79);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0x7a);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0x7b);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append string
+ std::copy(j.m_value.string->begin(), j.m_value.string->end(),
+ std::back_inserter(v));
+ break;
+ }
+
+ case value_t::array:
+ {
+ const auto N = j.m_value.array->size();
+ if (N <= 0x17)
+ {
+ // 1 byte for array + size
+ v.push_back(0x80 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0x98);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0x99);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0x9a);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0x9b);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append each element
+ for (const auto& el : *j.m_value.array)
+ {
+ to_cbor_internal(el, v);
+ }
+ break;
+ }
+
+ case value_t::object:
+ {
+ const auto N = j.m_value.object->size();
+ if (N <= 0x17)
+ {
+ // 1 byte for array + size
+ v.push_back(0xa0 + N);
+ }
+ else if (N <= 0xff)
+ {
+ v.push_back(0xb8);
+ // one-byte uint8_t for N
+ v.push_back(static_cast<uint8_t>(N));
+ }
+ else if (N <= 0xffff)
+ {
+ v.push_back(0xb9);
+ // two-byte uint16_t for N
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffff)
+ {
+ v.push_back(0xba);
+ // four-byte uint32_t for N
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+ else if (N <= 0xffffffffffffffff)
+ {
+ v.push_back(0xbb);
+ // eight-byte uint64_t for N
+ v.push_back(static_cast<uint8_t>((N >> 070) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 060) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 050) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 040) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 030) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 020) & 0xff));
+ v.push_back(static_cast<uint8_t>((N >> 010) & 0xff));
+ v.push_back(static_cast<uint8_t>(N & 0xff));
+ }
+
+ // append each element
+ for (const auto& el : *j.m_value.object)
+ {
+ to_cbor_internal(el.first, v);
+ to_cbor_internal(el.second, v);
+ }
+ break;
+ }
+
+ default:
+ {
+ break;
+ }
+ }
+ }
+
/*!
@param[in] v MessagePack serialization
@param[in] idx byte index to start reading from @a v
@@ -6595,6 +6923,323 @@ class basic_json
throw std::invalid_argument("error parsing a msgpack @ " + std::to_string(current_idx));
}
+ static basic_json from_cbor_internal(const std::vector<uint8_t>& v, size_t& idx)
+ {
+ // store and increment index
+ const size_t current_idx = idx++;
+
+ if (v[current_idx] <= 0x17) // Integer 0x00..0x17
+ {
+ return v[current_idx];
+ }
+ else if (v[current_idx] == 0x18) // Unsigned integer uint8_t
+ {
+ idx += 1; // skip content byte
+ return v[current_idx + 1];
+ }
+ else if (v[current_idx] == 0x19) // Unsigned integer uint16_t
+ {
+ idx += 2; // skip 2 content bytes
+ return static_cast<uint16_t>((static_cast<uint16_t>(v[current_idx + 1]) << 010) +
+ static_cast<uint16_t>(v[current_idx + 2]));
+ }
+ else if (v[current_idx] == 0x1a) // Unsigned integer uint32_t
+ {
+ idx += 4; // skip 4 content bytes
+ return static_cast<uint32_t>((static_cast<uint32_t>(v[current_idx + 1]) << 030) +
+ (static_cast<uint32_t>(v[current_idx + 2]) << 020) +
+ (static_cast<uint32_t>(v[current_idx + 3]) << 010) +
+ static_cast<uint32_t>(v[current_idx + 4]));
+ }
+ else if (v[current_idx] == 0x1b) // Unsigned integer uint64_t
+ {
+ idx += 8; // skip 8 content bytes
+ return static_cast<uint64_t>((static_cast<uint64_t>(v[current_idx + 1]) << 070) +
+ (static_cast<uint64_t>(v[current_idx + 2]) << 060) +
+ (static_cast<uint64_t>(v[current_idx + 3]) << 050) +
+ (static_cast<uint64_t>(v[current_idx + 4]) << 040) +
+ (static_cast<uint64_t>(v[current_idx + 5]) << 030) +
+ (static_cast<uint64_t>(v[current_idx + 6]) << 020) +
+ (static_cast<uint64_t>(v[current_idx + 7]) << 010) +
+ static_cast<uint64_t>(v[current_idx + 8]));
+ }
+ else if (v[current_idx] >= 0x20 and v[current_idx] <= 0x37) // Negative integer
+ {
+ return static_cast<int8_t>(0x20 - 1 - v[current_idx]);
+ }
+ else if (v[current_idx] == 0x38) // Negative integer
+ {
+ idx += 1; // skip content byte
+ return static_cast<int16_t>(-1 - v[current_idx + 1]);
+ }
+ else if (v[current_idx] == 0x39) // Negative integer
+ {
+ idx += 2; // skip 2 content bytes
+ return -1 - static_cast<int16_t>((static_cast<int16_t>(v[current_idx + 1]) << 010) +
+ static_cast<int16_t>(v[current_idx + 2]));
+ }
+ else if (v[current_idx] == 0x3a) // Negative integer
+ {
+ idx += 4; // skip 4 content bytes
+ return -1 - static_cast<int32_t>((static_cast<int32_t>(v[current_idx + 1]) << 030) +
+ (static_cast<int32_t>(v[current_idx + 2]) << 020) +
+ (static_cast<int32_t>(v[current_idx + 3]) << 010) +
+ static_cast<int32_t>(v[current_idx + 4]));
+ }
+ else if (v[current_idx] == 0x3b) // Negative integer
+ {
+ idx += 8; // skip 8 content bytes
+ return -1 - static_cast<int64_t>((static_cast<int64_t>(v[current_idx + 1]) << 070) +
+ (static_cast<int64_t>(v[current_idx + 2]) << 060) +
+ (static_cast<int64_t>(v[current_idx + 3]) << 050) +
+ (static_cast<int64_t>(v[current_idx + 4]) << 040) +
+ (static_cast<int64_t>(v[current_idx + 5]) << 030) +
+ (static_cast<int64_t>(v[current_idx + 6]) << 020) +
+ (static_cast<int64_t>(v[current_idx + 7]) << 010) +
+ static_cast<int64_t>(v[current_idx + 8]));
+ }
+ else if (v[current_idx] >= 0x60 and v[current_idx] <= 0x77) // UTF-8 string
+ {
+ const size_t len = v[current_idx] - 0x60;
+ const size_t offset = current_idx + 1;
+ idx += len; // skip content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x78) // UTF-8 string
+ {
+ const size_t len = v[current_idx + 1];
+ const size_t offset = current_idx + 2;
+ idx += len + 1; // skip size byte + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x79) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) + v[current_idx + 2]);
+ const size_t offset = current_idx + 3;
+ idx += len + 2; // skip 2 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x7a) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ const size_t offset = current_idx + 5;
+ idx += len + 4; // skip 4 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] == 0x7b) // UTF-8 string
+ {
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ const size_t offset = current_idx + 5;
+ idx += len + 4; // skip 4 size bytes + content bytes
+ return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
+ }
+ else if (v[current_idx] >= 0x80 and v[current_idx] <= 0x97) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = v[current_idx] - 0x80;
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x98) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>(v[current_idx + 1]);
+ idx += 1; // skip 1 size byte
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x99) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) +
+ v[current_idx + 2]);
+ idx += 2; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x9a) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ idx += 4; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0x9b) // array
+ {
+ basic_json result = value_t::array;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ idx += 8; // skip 8 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ result.push_back(from_cbor_internal(v, idx));
+ }
+ return result;
+ }
+ else if (v[current_idx] >= 0xa0 and v[current_idx] <= 0xb7) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = v[current_idx] - 0xa0;
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xb8) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>(v[current_idx + 1]);
+ idx += 1; // skip 1 size byte
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xb9) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 010) +
+ v[current_idx + 2]);
+ idx += 2; // skip 2 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xba) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 030) +
+ (v[current_idx + 2] << 020) +
+ (v[current_idx + 3] << 010) +
+ v[current_idx + 4]);
+ idx += 4; // skip 4 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xbb) // map
+ {
+ basic_json result = value_t::object;
+ const size_t len = static_cast<size_t>((v[current_idx + 1] << 070) +
+ (v[current_idx + 2] << 060) +
+ (v[current_idx + 3] << 050) +
+ (v[current_idx + 4] << 040) +
+ (v[current_idx + 5] << 030) +
+ (v[current_idx + 6] << 020) +
+ (v[current_idx + 7] << 010) +
+ v[current_idx + 8]);
+ idx += 8; // skip 8 size bytes
+ for (size_t i = 0; i < len; ++i)
+ {
+ std::string key = from_cbor_internal(v, idx);
+ result[key] = from_cbor_internal(v, idx);
+ }
+ return result;
+ }
+ else if (v[current_idx] == 0xf4) // false
+ {
+ return false;
+ }
+ else if (v[current_idx] == 0xf5) // true
+ {
+ return true;
+ }
+ else if (v[current_idx] == 0xf6) // null
+ {
+ return value_t::null;
+ }
+ else if (v[current_idx] == 0xfa) // Single-Precision Float
+ {
+ // copy bytes in reverse order into the float variable
+ float res;
+ for (size_t byte = 0; byte < sizeof(float); ++byte)
+ {
+ reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
+ }
+ idx += sizeof(float); // skip content bytes
+ return res;
+ }
+ else if (v[current_idx] == 0xfb) // Double-Precision Float
+ {
+ // copy bytes in reverse order into the double variable
+ double res;
+ for (size_t byte = 0; byte < sizeof(double); ++byte)
+ {
+ reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
+ }
+ idx += sizeof(double); // skip content bytes
+ return res;
+ }
+
+ // 40..57 byte string
+ // 58 byte string
+ // 59 byte string
+ // 5a byte string
+ // 5b byte string
+ // 5f byte string
+ // 7f UTF-8 string with break
+ // 9f array with break
+ // bf map with break
+ // c0 Text-based date/time
+ // c1 Epoch-based date/time
+ // c2 Positive bignum
+ // c3 Positive bignum
+ // c4 Decimal Fraction
+ // c5 Bigfloat
+ // c6..d4 tagged item
+ // d5..d7 Expected Conversion
+ // d8..db more tagged items
+ // e0..f3 simple value
+ // f7 undefined
+ // f8 simple value
+ // f9 half-precision float
+ // ff break stop code
+
+ throw std::invalid_argument("error parsing a CBOR @ " + std::to_string(current_idx) + ": " + std::to_string(v[current_idx]));
+ }
+
public:
/*!
@param[in] j JSON value to serialize
@@ -6613,6 +7258,23 @@ class basic_json
return from_msgpack_internal(v, i);
}
+ /*!
+ @param[in] j JSON value to serialize
+ @retuen CBOR serialization as char vector
+ */
+ static std::vector<uint8_t> to_cbor(const basic_json& j)
+ {
+ std::vector<uint8_t> result;
+ to_cbor_internal(j, result);
+ return result;
+ }
+
+ static basic_json from_cbor(const std::vector<uint8_t>& v)
+ {
+ size_t i = 0;
+ return from_cbor_internal(v, i);
+ }
+
/// @}
private: