Eclipse SUMO - Simulation of Urban MObility
OutputDevice_File.cpp
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1 /****************************************************************************/
2 // Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.org/sumo
3 // Copyright (C) 2004-2022 German Aerospace Center (DLR) and others.
4 // This program and the accompanying materials are made available under the
5 // terms of the Eclipse Public License 2.0 which is available at
6 // https://www.eclipse.org/legal/epl-2.0/
7 // This Source Code may also be made available under the following Secondary
8 // Licenses when the conditions for such availability set forth in the Eclipse
9 // Public License 2.0 are satisfied: GNU General Public License, version 2
10 // or later which is available at
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12 // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
13 /****************************************************************************/
20 // An output device that encapsulates an ofstream
21 /****************************************************************************/
22 #include <config.h>
23 
24 #include <iostream>
25 #include <cstring>
26 #include <cerrno>
27 #ifdef HAVE_ZLIB
28 #include <foreign/zstr/zstr.hpp>
29 #endif
32 #include "OutputDevice_File.h"
33 
34 
35 // ===========================================================================
36 // method definitions
37 // ===========================================================================
38 OutputDevice_File::OutputDevice_File(const std::string& fullName, const bool compressed)
39  : OutputDevice(0, fullName) {
40  if (fullName == "/dev/null") {
41  myAmNull = true;
42 #ifdef WIN32
43  myFileStream = new std::ofstream("NUL");
44  if (!myFileStream->good()) {
45  delete myFileStream;
46  throw IOError("Could not redirect to NUL device (" + std::string(std::strerror(errno)) + ").");
47  }
48  return;
49 #endif
50  }
51  const std::string& localName = StringUtils::transcodeToLocal(fullName);
52 #ifdef HAVE_ZLIB
53  if (compressed) {
54  try {
55  myFileStream = new zstr::ofstream(localName.c_str(), std::ios_base::out);
56  } catch (zstr::Exception& e) {
57  throw IOError("Could not build output file '" + fullName + "' (" + e.what() + ").");
58  }
59  } else {
60  myFileStream = new std::ofstream(localName.c_str(), std::ios_base::out);
61  }
62 #else
63  UNUSED_PARAMETER(compressed);
64  myFileStream = new std::ofstream(localName.c_str(), binary ? std::ios::binary : std::ios_base::out);
65 #endif
66  if (!myFileStream->good()) {
67  delete myFileStream;
68  throw IOError("Could not build output file '" + fullName + "' (" + std::strerror(errno) + ").");
69  }
70 }
71 
72 
74  delete myFileStream;
75 }
76 
77 
78 std::ostream&
80  return *myFileStream;
81 }
82 
83 
84 /****************************************************************************/
#define UNUSED_PARAMETER(x)
Definition: StdDefs.h:30
bool myAmNull
am I redirecting to /dev/null
std::ostream * myFileStream
The wrapped ofstream.
OutputDevice_File(const std::string &fullName, const bool compressed=false)
Constructor.
std::ostream & getOStream()
Returns the associated ostream.
~OutputDevice_File()
Destructor.
Static storage of an output device and its base (abstract) implementation.
Definition: OutputDevice.h:61
static std::string transcodeToLocal(const std::string &utf8String)
convert a string from UTF-8 to the local codepage
Exception class thrown by failed zlib operations.
Definition: zstr.hpp:24
const char * what() const NOEXCEPT
Definition: zstr.hpp:55
static std::string strerror()