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/********************* */
/*! \file open_ostream.h
** \verbatim
** Top contributors (to current version):
** Tim King, Paul Meng
** This file is part of the CVC4 project.
** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
#include "cvc4_private.h"
#ifndef __CVC4__OPEN_OSTREAM_H
#define __CVC4__OPEN_OSTREAM_H
#include <map>
#include <ostream>
#include <string>
#include <utility>
#include "options/option_exception.h"
namespace CVC4 {
class OstreamOpener {
public:
OstreamOpener(const char* channelName);
void addSpecialCase(const std::string& name, std::ostream* out);
/**
* If name == "", this throws OptionException with the message, messageIfEmpty.
* If name is a special case, this return <false, out> where out is the
* special case that was added.
* If name == "std::cerr", this return <false, &cerr>.
* If none of the previous conditions hold and !options::filesystemAccess(),
* this throws an OptionException.
* Otherwise, this attempts to open a ofstream using the filename, name.
* If this fails, this throws and OptionException. If this succeeds, this
* returns <true, stream> where stream is a ostream allocated by new.
* The caller is in this case the owner of the allocated memory.
*/
std::pair<bool, std::ostream*> open(const std::string& name) const
throw(OptionException);
private:
const char* d_channelName;
std::map< std::string, std::ostream* > d_specialCases;
}; /* class OstreamOpener */
std::string cvc4_errno_failreason();
}/* CVC4 namespace */
#endif /* __CVC4__OPEN_OSTREAM_H */
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