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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file JSON.cpp
* @author Alexander Arlt <alexander.arlt@arlt-labs.com>
* @date 2018
*/
#include "JSON.h"
#include <sstream>
#include <map>
#include <memory>
using namespace std;
static_assert(
(JSONCPP_VERSION_MAJOR == 1) && (JSONCPP_VERSION_MINOR == 7) && (JSONCPP_VERSION_PATCH == 7),
"Unexpected jsoncpp version: " JSONCPP_VERSION_STRING ". Expecting 1.7.7."
);
namespace dev
{
namespace
{
/// StreamWriterBuilder that can be constructed with specific settings
class StreamWriterBuilder: public Json::StreamWriterBuilder
{
public:
explicit StreamWriterBuilder(map<string, string> const& _settings)
{
for (auto const& iter :_settings)
this->settings_[iter.first] = iter.second;
}
};
/// CharReaderBuilder with strict-mode settings
class StrictModeCharReaderBuilder: public Json::CharReaderBuilder
{
public:
StrictModeCharReaderBuilder()
{
Json::CharReaderBuilder::strictMode(&this->settings_);
}
};
/// Serialise the JSON object (@a _input) with specific builder (@a _builder)
/// \param _input JSON input string
/// \param _builder StreamWriterBuilder that is used to create new Json::StreamWriter
/// \return serialized json object
string print(Json::Value const& _input, Json::StreamWriterBuilder const& _builder)
{
stringstream stream;
unique_ptr<Json::StreamWriter> writer(_builder.newStreamWriter());
writer->write(_input, &stream);
return stream.str();
}
/// Parse a JSON string (@a _input) with specified builder (@ _builder) and writes resulting JSON object to (@a _json)
/// \param _builder CharReaderBuilder that is used to create new Json::CharReaders
/// \param _input JSON input string
/// \param _json [out] resulting JSON object
/// \param _errs [out] Formatted error messages
/// \return \c true if the document was successfully parsed, \c false if an error occurred.
bool parse(Json::CharReaderBuilder& _builder, string const& _input, Json::Value& _json, string* _errs)
{
unique_ptr<Json::CharReader> reader(_builder.newCharReader());
return reader->parse(_input.c_str(), _input.c_str() + _input.length(), &_json, _errs);
}
} // end anonymous namespace
string jsonPrettyPrint(Json::Value const& _input)
{
static map<string, string> settings{{"indentation", " "}};
static StreamWriterBuilder writerBuilder(settings);
return print(_input, writerBuilder);
}
string jsonCompactPrint(Json::Value const& _input)
{
static map<string, string> settings{{"indentation", ""}};
static StreamWriterBuilder writerBuilder(settings);
return print(_input, writerBuilder);
}
bool jsonParseStrict(string const& _input, Json::Value& _json, string* _errs /* = nullptr */)
{
static StrictModeCharReaderBuilder readerBuilder;
return parse(readerBuilder, _input, _json, _errs);
}
bool jsonParse(string const& _input, Json::Value& _json, string *_errs /* = nullptr */)
{
static Json::CharReaderBuilder readerBuilder;
return parse(readerBuilder, _input, _json, _errs);
}
} // namespace dev
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