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Diffstat (limited to 'libs/assimp/tools/assimp_cmd/generic_inserter.hpp')
-rw-r--r-- | libs/assimp/tools/assimp_cmd/generic_inserter.hpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/libs/assimp/tools/assimp_cmd/generic_inserter.hpp b/libs/assimp/tools/assimp_cmd/generic_inserter.hpp new file mode 100644 index 0000000..8053219 --- /dev/null +++ b/libs/assimp/tools/assimp_cmd/generic_inserter.hpp @@ -0,0 +1,113 @@ +/* Boost Software License - Version 1.0 - August 17th, 2003 + * + * Permission is hereby granted, free of charge, to any person or organization + * obtaining a copy of the software and accompanying documentation covered by + * this license (the "Software") to use, reproduce, display, distribute, + * execute, and transmit the Software, and to prepare derivative works of the + * Software, and to permit third-parties to whom the Software is furnished to + * do so, all subject to the following: + * + * The copyright notices in the Software and this entire statement, including + * the above license grant, this restriction and the following disclaimer, + * must be included in all copies of the Software, in whole or in part, and + * all derivative works of the Software, unless such copies or derivative + * works are solely in the form of machine-executable object code generated by + * a source language processor. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT + * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE + * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. */ + + +#ifndef HEADER_GENERIC_INSERTER_HPP_INCLUDED +#define HEADER_GENERIC_INSERTER_HPP_INCLUDED + + +#include <ostream> +#include <new> // bad_alloc + + +template <typename char_type, typename traits_type, typename argument_type> +std::basic_ostream<char_type, traits_type>& generic_inserter(void (*print)(std::basic_ostream<char_type, traits_type>& os, argument_type const& arg), std::basic_ostream<char_type, traits_type>& os, argument_type const& arg) +{ + using namespace ::std; + + ios_base::iostate err = ios_base::goodbit; + try + { + typename basic_ostream<char_type, traits_type>::sentry sentry(os); + if (sentry) + { + print(os, arg); + err = os.rdstate(); + os.width(0); // Reset width in case the user didn't do it. + } + } + catch (bad_alloc const&) + { + err |= ios_base::badbit; // bad_alloc is considered fatal + ios_base::iostate const exception_mask = os.exceptions(); + + // Two cases: 1.) badbit is not set; 2.) badbit is set + if (((exception_mask & ios_base::failbit) != 0) && // failbit shall throw + ((exception_mask & ios_base::badbit) == 0)) // badbit shall not throw + { + // Do not throw unless failbit is set. + // If it is set throw ios_base::failure because we don't know what caused the failbit to be set. + os.setstate(err); + } + else if (exception_mask & ios_base::badbit) + { + try + { + // This will set the badbit and throw ios_base::failure. + os.setstate(err); + } + catch (ios_base::failure const&) + { + // Do nothing since we want bad_alloc to be rethrown. + } + throw; + } + // else: no exception must get out! + } + catch (...) + { + err |= ios_base::failbit; // Any other exception is considered "only" as a failure. + ios_base::iostate const exception_mask = os.exceptions(); + + // badbit is considered more important + if (((exception_mask & ios_base::badbit) != 0) && // badbit shall throw + ((err & ios_base::badbit) != 0)) // badbit is set + { + // Throw ios_base::failure because we don't know what caused the badbit to be set. + os.setstate(err); + } + else if ((exception_mask & ios_base::failbit) != 0) + { + try + { + // This will set the failbit and throw the exception ios_base::failure. + os.setstate(err); + } + catch (ios_base::failure const&) + { + // Do nothing since we want the original exception to be rethrown. + } + throw; + } + // else: no exception must get out! + } + + // Needed in the case that no exception has been thrown but the stream state has changed. + if (err) + os.setstate(err); + return os; +} + + +#endif // HEADER_GENERIC_INSERTER_HPP_INCLUDED |