OutputDevice_File.cpp

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// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2004-2025 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// An output device that encapsulates an ofstream
/****************************************************************************/
#include <config.h>
 
#include <iostream>
#include <cstring>
#include <cerrno>
#ifdef HAVE_ZLIB
#include <foreign/zstr/zstr.hpp>
#endif
#include <utils/common/StringUtils.h>
#include <utils/common/UtilExceptions.h>
#include "OutputDevice_File.h"
 
 
// ===========================================================================
// method definitions
// ===========================================================================
OutputDevice_File::OutputDevice_File(const std::string& fullName, const bool binary)
    : OutputDevice(0, fullName) {
    if (fullName == "/dev/null") {
        myAmNull = true;
#ifdef WIN32
        myFileStream = new std::ofstream("NUL");
        if (!myFileStream->good()) {
            delete myFileStream;
            throw IOError(TLF("Could not redirect to NUL device (%).", std::string(std::strerror(errno))));
        }
        return;
#endif
    }
    const std::string& localName = StringUtils::transcodeToLocal(fullName);
    std::ios_base::openmode mode = std::ios_base::out;
    if (binary) {
        mode |= std::ios_base::binary;
    }
#ifdef HAVE_ZLIB
    if (fullName.length() > 3 && fullName.substr(fullName.length() - 3) == ".gz") {
        try {
            myFileStream = new zstr::ofstream(localName.c_str(), mode);
        } catch (strict_fstream::Exception& e) {
            throw IOError("Could not build output file '" + fullName + "' (" + e.what() + ").");
        } catch (zstr::Exception& e) {
            throw IOError("Could not build output file '" + fullName + "' (" + e.what() + ").");
        }
    }
#else
    UNUSED_PARAMETER(compressed);
#endif
    if (myFileStream == nullptr) {
        myFileStream = new std::ofstream(localName.c_str(), mode);
    }
    if (!myFileStream->good()) {
        delete myFileStream;
        throw IOError("Could not build output file '" + fullName + "' (" + std::strerror(errno) + ").");
    }
}
 
 
OutputDevice_File::~OutputDevice_File() {
    // we need to cleanup the formatter first, because it still might have cached data
    delete myFormatter;
    myFormatter = nullptr;
    delete myFileStream;
}
 
 
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