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45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
// See the file "COPYING" in the main distribution directory for copyright.
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#include "zeek/storage/serializer/json/JSON.h"
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#include "zeek/Func.h"
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namespace zeek::storage::serializer::json {
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std::string JSON::versioned_name = "JSONv1";
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std::unique_ptr<Serializer> JSON::Instantiate() { return std::make_unique<JSON>(); }
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JSON::JSON() : Serializer("JSON") {}
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std::optional<byte_buffer> JSON::Serialize(ValPtr val) {
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static auto byte_converter = [](u_char c) { return std::byte(c); };
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byte_buffer buf;
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auto json = val->ToJSON();
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buf.reserve(json->Len() + versioned_name.size() + 1);
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std::transform(versioned_name.begin(), versioned_name.end(), std::back_inserter(buf), byte_converter);
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buf.push_back(static_cast<std::byte>(';'));
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std::transform(json->Bytes(), json->Bytes() + json->Len(), std::back_inserter(buf), byte_converter);
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return buf;
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}
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zeek::expected<ValPtr, std::string> JSON::Unserialize(byte_buffer_span buf, TypePtr type) {
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std::string_view text{reinterpret_cast<std::string::const_pointer>(buf.data()), buf.size()};
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auto semicolon = text.find(';');
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if ( semicolon == std::string::npos )
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return zeek::unexpected<std::string>("Version string missing");
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std::string_view version = std::string_view(text).substr(0, semicolon);
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if ( version != versioned_name )
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return zeek::unexpected<std::string>(util::fmt("Version doesn't match: %.*s vs %s",
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static_cast<int>(version.size()), version.data(),
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versioned_name.c_str()));
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return zeek::detail::ValFromJSON(text.substr(semicolon + 1), type, Func::nil);
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}
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} // namespace zeek::storage::serializer::json
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