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0558b53493
The XS was left only for the unit / integration tests, and it links libslic3r only. No wxWidgets are allowed to be used from Perl starting from now.
125 lines
4 KiB
C++
125 lines
4 KiB
C++
/*
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* Copyright (C) 2007,2008 Alex Shulgin
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*
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* This file is part of png++ the C++ wrapper for libpng. PNG++ is free
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* software; the exact copying conditions are as follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PNGPP_ERROR_HPP_INCLUDED
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#define PNGPP_ERROR_HPP_INCLUDED
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/* check if we have strerror_s or strerror_r, prefer the former which is C11 std */
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#ifdef __STDC_LIB_EXT1__
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#define __STDC_WANT_LIB_EXT1__ 1
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#include <string.h>
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#define HAVE_STRERROR_S 1
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#else
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#undef HAVE_STRERROR_S
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#endif
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#include <string>
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#include <stdexcept>
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#include <cerrno>
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#include <cstdlib>
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#include <cstring>
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namespace png
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{
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/**
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* \brief Exception class to represent runtime errors related to
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* png++ operation.
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*/
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class error
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: public std::runtime_error
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{
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public:
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/**
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* \param message error description
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*/
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explicit error(std::string const& message)
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: std::runtime_error(message)
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{
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}
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};
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/**
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* \brief Exception class to represent standard library errors
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* (generally IO).
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*
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* \see reader, writer
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*/
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class std_error
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: public std::runtime_error
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{
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public:
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/**
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* Constructs an std_error object. The \a message string is
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* appended with <tt>": "</tt> and the error description as
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* returned by \c strerror(\a error).
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*
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* \param message error description
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* \param error error number
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*/
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explicit std_error(std::string const& message, int errnum = errno)
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: std::runtime_error((message + ": ") + thread_safe_strerror(errnum))
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{
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}
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protected:
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static std::string thread_safe_strerror(int errnum)
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{
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#define ERRBUF_SIZE 512
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#ifdef HAVE_STRERROR_S
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char buf[ERRBUF_SIZE] = { 0 };
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strerror_s(buf, ERRBUF_SIZE, errnum);
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return std::string(buf);
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#else
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#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE
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char buf[ERRBUF_SIZE] = { 0 };
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strerror_r(errnum, buf, ERRBUF_SIZE);
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return std::string(buf);
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#elif _GNU_SOURCE
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/* GNU variant can return a pointer to static buffer instead of buf */
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char buf[ERRBUF_SIZE] = { 0 };
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return std::string(strerror_r(errnum, buf, ERRBUF_SIZE));
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#else
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return std::string("An error occured with errnum ") +
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std::to_string(errnum) +
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". Converting to the appropriate error message is disabled"
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"in this instance of the png++ library.";
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#endif
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#endif
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#undef ERRBUF_SIZE
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}
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};
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} // namespace png
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#endif // PNGPP_ERROR_HPP_INCLUDED
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