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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include "json.h"
namespace crdtp {
namespace {
int Transcode(const std::string& cmd,
const std::string& input_file_name,
const std::string& output_file_name) {
std::ifstream input_file(input_file_name, std::ios::binary);
if (!input_file.is_open()) {
std::cerr << "failed to open " << input_file_name << "\n";
return 1;
}
std::string in;
while (input_file) {
std::string buffer(1024, '\0');
input_file.read(&buffer.front(), buffer.size());
in += buffer.substr(0, input_file.gcount());
}
Status status;
std::vector<uint8_t> out;
if (cmd == "--json-to-cbor") {
status = json::ConvertJSONToCBOR(SpanFrom(in), &out);
} else if (cmd == "--cbor-to-json") {
status = json::ConvertCBORToJSON(SpanFrom(in), &out);
} else {
std::cerr << "unknown command " << cmd << "\n";
return 1;
}
if (!status.ok()) {
std::cerr << "transcoding error: " << status.ToASCIIString() << "\n";
return 1;
}
std::ofstream output_file(output_file_name, std::ios::binary);
if (!output_file.is_open()) {
std::cerr << "failed to open " << output_file_name << "\n";
return 1;
}
output_file.write(reinterpret_cast<const char*>(out.data()), out.size());
return 0;
}
} // namespace
} // namespace crdtp
int main(int argc, char** argv) {
if (argc == 4)
return ::crdtp::Transcode(argv[1], argv[2], argv[3]);
std::cerr << "usage: " << argv[0]
<< " --json-to-cbor <input-file> <output-file>\n"
<< " or " << argv[0]
<< " --cbor-to-json <input-file> <output-file>\n";
return 1;
}
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