| /* |
| Open Asset Import Library (assimp) |
| ---------------------------------------------------------------------- |
| |
| Copyright (c) 2006-2017, assimp team |
| |
| All rights reserved. |
| |
| Redistribution and use of this software 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 the assimp team, nor the names of its |
| contributors may be used to endorse or promote products |
| derived from this software without specific prior |
| written permission of the assimp team. |
| |
| 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 |
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| ---------------------------------------------------------------------- |
| */ |
| |
| /** @file TinyFormatter.h |
| * @brief Utility to format log messages more easily. Introduced |
| * to get rid of the boost::format dependency. Much slinker, |
| * basically just extends stringstream. |
| */ |
| #ifndef INCLUDED_TINY_FORMATTER_H |
| #define INCLUDED_TINY_FORMATTER_H |
| |
| #include <sstream> |
| |
| namespace Assimp { |
| namespace Formatter { |
| |
| // ------------------------------------------------------------------------------------------------ |
| /** stringstream utility. Usage: |
| * @code |
| * void writelog(const std::string&s); |
| * void writelog(const std::wstring&s); |
| * ... |
| * writelog(format()<< "hi! this is a number: " << 4); |
| * writelog(wformat()<< L"hi! this is a number: " << 4); |
| * |
| * @endcode */ |
| template < typename T, |
| typename CharTraits = std::char_traits<T>, |
| typename Allocator = std::allocator<T> |
| > |
| class basic_formatter |
| { |
| |
| public: |
| |
| typedef class std::basic_string< |
| T,CharTraits,Allocator |
| > string; |
| |
| typedef class std::basic_ostringstream< |
| T,CharTraits,Allocator |
| > stringstream; |
| |
| public: |
| |
| basic_formatter() {} |
| |
| /* Allow basic_formatter<T>'s to be used almost interchangeably |
| * with std::(w)string or const (w)char* arguments because the |
| * conversion c'tor is called implicitly. */ |
| template <typename TT> |
| basic_formatter(const TT& sin) { |
| underlying << sin; |
| } |
| |
| |
| // The problem described here: |
| // https://sourceforge.net/tracker/?func=detail&atid=1067632&aid=3358562&group_id=226462 |
| // can also cause trouble here. Apparently, older gcc versions sometimes copy temporaries |
| // being bound to const ref& function parameters. Copying streams is not permitted, though. |
| // This workaround avoids this by manually specifying a copy ctor. |
| #if !defined(__GNUC__) || !defined(__APPLE__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) |
| explicit basic_formatter(const basic_formatter& other) { |
| underlying << (string)other; |
| } |
| #endif |
| |
| |
| public: |
| |
| operator string () const { |
| return underlying.str(); |
| } |
| |
| |
| /* note - this is declared const because binding temporaries does only |
| * work for const references, so many function prototypes will |
| * include const basic_formatter<T>& s but might still want to |
| * modify the formatted string without the need for a full copy.*/ |
| template <typename TToken> |
| const basic_formatter& operator << (const TToken& s) const { |
| underlying << s; |
| return *this; |
| } |
| |
| template <typename TToken> |
| basic_formatter& operator << (const TToken& s) { |
| underlying << s; |
| return *this; |
| } |
| |
| |
| // comma operator overloaded as well, choose your preferred way. |
| template <typename TToken> |
| const basic_formatter& operator, (const TToken& s) const { |
| underlying << s; |
| return *this; |
| } |
| |
| template <typename TToken> |
| basic_formatter& operator, (const TToken& s) { |
| underlying << s; |
| return *this; |
| } |
| |
| // Fix for MSVC8 |
| // See https://sourceforge.net/projects/assimp/forums/forum/817654/topic/4372824 |
| template <typename TToken> |
| basic_formatter& operator, (TToken& s) { |
| underlying << s; |
| return *this; |
| } |
| |
| |
| private: |
| mutable stringstream underlying; |
| }; |
| |
| |
| typedef basic_formatter< char > format; |
| typedef basic_formatter< wchar_t > wformat; |
| |
| } // ! namespace Formatter |
| |
| } // ! namespace Assimp |
| |
| #endif |