mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file JSON.cpp
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* @author Alexander Arlt <alexander.arlt@arlt-labs.com>
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* @date 2018
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*/
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#include <libdevcore/JSON.h>
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#include <libdevcore/CommonIO.h>
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#include <boost/algorithm/string/replace.hpp>
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#include <sstream>
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#include <map>
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#include <memory>
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using namespace std;
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static_assert(
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(JSONCPP_VERSION_MAJOR == 1) && (JSONCPP_VERSION_MINOR == 8) && (JSONCPP_VERSION_PATCH == 4),
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"Unexpected jsoncpp version: " JSONCPP_VERSION_STRING ". Expecting 1.8.4."
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);
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namespace dev
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{
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namespace
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{
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/// StreamWriterBuilder that can be constructed with specific settings
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class StreamWriterBuilder: public Json::StreamWriterBuilder
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{
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public:
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explicit StreamWriterBuilder(map<string, Json::Value> const& _settings)
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{
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for (auto const& iter: _settings)
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this->settings_[iter.first] = iter.second;
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}
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};
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/// CharReaderBuilder with strict-mode settings
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class StrictModeCharReaderBuilder: public Json::CharReaderBuilder
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{
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public:
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StrictModeCharReaderBuilder()
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{
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Json::CharReaderBuilder::strictMode(&this->settings_);
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}
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};
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/// Serialise the JSON object (@a _input) with specific builder (@a _builder)
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/// \param _input JSON input string
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/// \param _builder StreamWriterBuilder that is used to create new Json::StreamWriter
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/// \return serialized json object
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string print(Json::Value const& _input, Json::StreamWriterBuilder const& _builder)
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{
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stringstream stream;
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unique_ptr<Json::StreamWriter> writer(_builder.newStreamWriter());
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writer->write(_input, &stream);
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return stream.str();
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}
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/// Parse a JSON string (@a _input) with specified builder (@ _builder) and writes resulting JSON object to (@a _json)
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/// \param _builder CharReaderBuilder that is used to create new Json::CharReaders
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/// \param _input JSON input string
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/// \param _json [out] resulting JSON object
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/// \param _errs [out] Formatted error messages
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/// \return \c true if the document was successfully parsed, \c false if an error occurred.
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bool parse(Json::CharReaderBuilder& _builder, string const& _input, Json::Value& _json, string* _errs)
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{
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unique_ptr<Json::CharReader> reader(_builder.newCharReader());
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return reader->parse(_input.c_str(), _input.c_str() + _input.length(), &_json, _errs);
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}
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} // end anonymous namespace
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string jsonPrettyPrint(Json::Value const& _input)
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{
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static map<string, Json::Value> settings{{"indentation", " "}, {"enableYAMLCompatibility", true}};
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static StreamWriterBuilder writerBuilder(settings);
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string result = print(_input, writerBuilder);
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boost::replace_all(result, " \n", "\n");
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return result;
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}
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string jsonCompactPrint(Json::Value const& _input)
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{
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static map<string, Json::Value> settings{{"indentation", ""}};
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static StreamWriterBuilder writerBuilder(settings);
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return print(_input, writerBuilder);
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}
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bool jsonParseStrict(string const& _input, Json::Value& _json, string* _errs /* = nullptr */)
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{
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static StrictModeCharReaderBuilder readerBuilder;
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return parse(readerBuilder, _input, _json, _errs);
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}
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bool jsonParse(string const& _input, Json::Value& _json, string *_errs /* = nullptr */)
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{
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static Json::CharReaderBuilder readerBuilder;
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return parse(readerBuilder, _input, _json, _errs);
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}
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bool jsonParseFile(string const& _fileName, Json::Value& _json, string *_errs /* = nullptr */)
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{
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return jsonParse(readFileAsString(_fileName), _json, _errs);
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}
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} // namespace dev
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