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/****************************************************************************** |
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* Top contributors (to current version): |
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* Morgan Deters, Tim King |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* [[ Add one-line brief description here ]] |
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* |
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* [[ Add lengthier description here ]] |
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* \todo document this file |
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*/ |
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#include "options/open_ostream.h" |
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#include <cerrno> |
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#include <fstream> |
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#include <iostream> |
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#include <ostream> |
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#include <sstream> |
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#include <string> |
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#include <utility> |
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#include "lib/strtok_r.h" |
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#include "options/option_exception.h" |
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#include "options/parser_options.h" |
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namespace cvc5 { |
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OstreamOpener::OstreamOpener(const char* channelName) |
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: d_channelName(channelName) |
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, d_specialCases() |
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{} |
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void OstreamOpener::addSpecialCase(const std::string& name, std::ostream* out){ |
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d_specialCases[name] = out; |
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} |
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std::pair< bool, std::ostream* > OstreamOpener::open(const std::string& optarg) const |
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{ |
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if(optarg == "") { |
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std::stringstream ss; |
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ss << "Bad file name setting for " << d_channelName; |
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throw OptionException(ss.str()); |
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} |
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if(d_specialCases.find(optarg) != d_specialCases.end()){ |
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return std::make_pair(false, (*d_specialCases.find(optarg)).second); |
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} else if(!options::filesystemAccess()) { |
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throw OptionException(std::string("Filesystem access not permitted")); |
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} else { |
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errno = 0; |
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std::ostream* outStream; |
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outStream = new std::ofstream(optarg.c_str(), |
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std::ofstream::out | std::ofstream::trunc); |
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if(outStream == NULL || !*outStream) { |
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std::stringstream ss; |
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ss << "Cannot open " << d_channelName << " file: `" << optarg |
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<< "': " << cvc5_errno_failreason(); |
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throw OptionException(ss.str()); |
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} |
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return make_pair(true, outStream); |
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} |
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} |
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std::string cvc5_errno_failreason() |
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{ |
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#if HAVE_STRERROR_R |
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#if STRERROR_R_CHAR_P |
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if(errno != 0) { |
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// GNU version of strerror_r: *might* use the given buffer, |
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// or might not. It returns a pointer to buf, or not. |
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char buf[80]; |
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return std::string(strerror_r(errno, buf, sizeof buf)); |
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} else { |
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return "unknown reason"; |
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} |
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#else /* STRERROR_R_CHAR_P */ |
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if(errno != 0) { |
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// XSI version of strerror_r: always uses the given buffer. |
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// Returns an error code. |
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char buf[80]; |
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if(strerror_r(errno, buf, sizeof buf) == 0) { |
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return std::string(buf); |
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} else { |
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// some error occurred while getting the error string |
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return "unknown reason"; |
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} |
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} else { |
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return "unknown reason"; |
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} |
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#endif /* STRERROR_R_CHAR_P */ |
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#else /* HAVE_STRERROR_R */ |
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return "unknown reason"; |
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#endif /* HAVE_STRERROR_R */ |
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} |
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} // namespace cvc5 |