Current File : //usr/include/OpenEXR/IexThrowErrnoExc.h
///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2002-2012, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Industrial Light & Magic nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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///////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_IEXTHROWERRNOEXC_H
#define INCLUDED_IEXTHROWERRNOEXC_H
//----------------------------------------------------------
//
// A function which throws ExcErrno exceptions
//
//----------------------------------------------------------
#include "IexBaseExc.h"
#include "IexExport.h"
IEX_INTERNAL_NAMESPACE_HEADER_ENTER
//--------------------------------------------------------------------------
//
// Function throwErrnoExc() throws an exception which corresponds to
// error code errnum. The exception text is initialized with a copy
// of the string passed to throwErrnoExc(), where all occurrences of
// "%T" have been replaced with the output of strerror(oserror()).
//
// Example:
//
// If opening file /tmp/output failed with an ENOENT error code,
// calling
//
// throwErrnoExc ();
//
// or
//
// throwErrnoExc ("%T.");
//
// will throw an EnoentExc whose text reads
//
// No such file or directory.
//
// More detailed messages can be assembled using stringstreams:
//
// std::stringstream s;
// s << "Cannot open file " << name << " (%T).";
// throwErrnoExc (s);
//
// The resulting exception contains the following text:
//
// Cannot open file /tmp/output (No such file or directory).
//
// Alternatively, you may want to use the THROW_ERRNO macro defined
// in IexMacros.h:
//
// THROW_ERRNO ("Cannot open file " << name << " (%T).")
//
//--------------------------------------------------------------------------
IEX_EXPORT void throwErrnoExc(const std::string &txt, int errnum);
IEX_EXPORT void throwErrnoExc(const std::string &txt);
IEX_EXPORT void throwErrnoExc();
IEX_INTERNAL_NAMESPACE_HEADER_EXIT
#endif // INCLUDED_IEXTHROWERRNOEXC_H
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