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/src/FreeImage/Source/OpenEXR/Iex/IexThrowErrnoExc.h

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 1///////////////////////////////////////////////////////////////////////////
 2//
 3// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
 4// Digital Ltd. LLC
 5// 
 6// All rights reserved.
 7// 
 8// Redistribution and use in source and binary forms, with or without
 9// modification, are permitted provided that the following conditions are
10// met:
11// *       Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// *       Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
19// from this software without specific prior written permission. 
20// 
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35
36
37#ifndef INCLUDED_IEXTHROWERRNOEXC_H
38#define INCLUDED_IEXTHROWERRNOEXC_H
39
40//----------------------------------------------------------
41//
42//	A function which throws ExcErrno exceptions
43//
44//----------------------------------------------------------
45
46#include "IexBaseExc.h"
47
48namespace Iex {
49
50
51//--------------------------------------------------------------------------
52//
53// Function throwErrnoExc() throws an exception which corresponds to
54// error code errnum.  The exception text is initialized with a copy
55// of the string passed to throwErrnoExc(), where all occurrences of
56// "%T" have been replaced with the output of strerror(oserror()).
57//
58// Example:
59//   
60// If opening file /tmp/output failed with an ENOENT error code,
61// calling
62//
63//	throwErrnoExc ();
64//
65// or
66//
67//	throwErrnoExc ("%T.");
68//
69// will throw an EnoentExc whose text reads
70//
71//	No such file or directory.
72//
73// More detailed messages can be assembled using stringstreams:
74//
75//	std::stringstream s;
76//	s << "Cannot open file " << name << " (%T).";
77//	throwErrnoExc (s);
78//
79// The resulting exception contains the following text:
80//
81//	Cannot open file /tmp/output (No such file or directory).
82//
83// Alternatively, you may want to use the THROW_ERRNO macro defined
84// in IexMacros.h:
85//
86//	THROW_ERRNO ("Cannot open file " << name << " (%T).")
87//
88//--------------------------------------------------------------------------
89
90void throwErrnoExc (const std::string &txt, int errnum);
91void throwErrnoExc (const std::string &txt = "%T." /*, int errnum = oserror() */);
92
93
94} // namespace Iex
95
96#endif