CLI: untieStdIO() to avoid unwanted implicit flush() calls on std::cout → less write() calls
/**
* Relational pipes
* Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstdio>
#include <cstdlib>
#include <memory>
#include <relpipe/cli/CLI.h>
#include <relpipe/cli/RelpipeCLIException.h>
#include <relpipe/reader/Factory.h>
#include <relpipe/reader/RelationalReader.h>
#include <relpipe/reader/RelpipeReaderException.h>
#include <relpipe/writer/RelationalWriter.h>
#include <relpipe/writer/RelpipeWriterException.h>
#include <relpipe/writer/Factory.h>
#include <relpipe/writer/TypeId.h>
#include "PassthroughHandler.h"
using namespace relpipe::cli;
using namespace relpipe::reader;
using namespace relpipe::tr::validator;
int main(int argc, char**argv) {
setlocale(LC_ALL, "");
CLI::untieStdIO();
CLI cli(argc, argv);
int resultCode = CLI::EXIT_CODE_UNEXPECTED_ERROR;
try {
std::shared_ptr<RelationalReader> reader(Factory::create(std::cin));
PassthroughHandler handler(std::cout);
reader->addHandler(&handler);
reader->process();
resultCode = CLI::EXIT_CODE_SUCCESS;
} catch (RelpipeCLIException e) {
fwprintf(stderr, L"Caught CLI exception: %ls\n", e.getMessge().c_str());
fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
resultCode = e.getExitCode();
} catch (RelpipeReaderException e) {
fwprintf(stderr, L"Caught Reader exception: %ls\n", e.getMessge().c_str());
fwprintf(stderr, L"Debug: Input stream: eof=%ls, lastRead=%d\n", (cin.eof() ? L"true" : L"false"), cin.gcount());
resultCode = CLI::EXIT_CODE_DATA_ERROR;
}
return resultCode;
}