1 files changed, 63 insertions, 0 deletions
diff --git a/src/options/open_ostream.h b/src/options/open_ostream.h
new file mode 100644
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+++ b/src/options/open_ostream.h
@@ -0,0 +1,63 @@
+/*********************                                                        */
+/*! \file open_stream.h
+ ** \verbatim
+ ** Original author: Tim King
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2016  New York University and The University of Iowa
+ ** 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 */