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annotate libs/assimp/TinyFormatter.h @ 0:b2f14e535253

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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nuclear@0 1 /*
nuclear@0 2 Open Asset Import Library (assimp)
nuclear@0 3 ----------------------------------------------------------------------
nuclear@0 4
nuclear@0 5 Copyright (c) 2006-2012, assimp team
nuclear@0 6 All rights reserved.
nuclear@0 7
nuclear@0 8 Redistribution and use of this software in source and binary forms,
nuclear@0 9 with or without modification, are permitted provided that the
nuclear@0 10 following conditions are met:
nuclear@0 11
nuclear@0 12 * Redistributions of source code must retain the above
nuclear@0 13 copyright notice, this list of conditions and the
nuclear@0 14 following disclaimer.
nuclear@0 15
nuclear@0 16 * Redistributions in binary form must reproduce the above
nuclear@0 17 copyright notice, this list of conditions and the
nuclear@0 18 following disclaimer in the documentation and/or other
nuclear@0 19 materials provided with the distribution.
nuclear@0 20
nuclear@0 21 * Neither the name of the assimp team, nor the names of its
nuclear@0 22 contributors may be used to endorse or promote products
nuclear@0 23 derived from this software without specific prior
nuclear@0 24 written permission of the assimp team.
nuclear@0 25
nuclear@0 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 37
nuclear@0 38 ----------------------------------------------------------------------
nuclear@0 39 */
nuclear@0 40
nuclear@0 41 /** @file TinyFormatter.h
nuclear@0 42 * @brief Utility to format log messages more easily. Introduced
nuclear@0 43 * to get rid of the boost::format dependency. Much slinker,
nuclear@0 44 * basically just extends stringstream.
nuclear@0 45 */
nuclear@0 46 #ifndef INCLUDED_TINY_FORMATTER_H
nuclear@0 47 #define INCLUDED_TINY_FORMATTER_H
nuclear@0 48
nuclear@0 49 #include <sstream>
nuclear@0 50
nuclear@0 51 namespace Assimp {
nuclear@0 52 namespace Formatter {
nuclear@0 53
nuclear@0 54 // ------------------------------------------------------------------------------------------------
nuclear@0 55 /** stringstream utility. Usage:
nuclear@0 56 * @code
nuclear@0 57 * void writelog(const std::string&s);
nuclear@0 58 * void writelog(const std::wstring&s);
nuclear@0 59 * ...
nuclear@0 60 * writelog(format()<< "hi! this is a number: " << 4);
nuclear@0 61 * writelog(wformat()<< L"hi! this is a number: " << 4);
nuclear@0 62 *
nuclear@0 63 * @endcode */
nuclear@0 64 template < typename T,
nuclear@0 65 typename CharTraits = std::char_traits<T>,
nuclear@0 66 typename Allocator = std::allocator<T>
nuclear@0 67 >
nuclear@0 68 class basic_formatter
nuclear@0 69 {
nuclear@0 70
nuclear@0 71 public:
nuclear@0 72
nuclear@0 73 typedef class std::basic_string<
nuclear@0 74 T,CharTraits,Allocator
nuclear@0 75 > string;
nuclear@0 76
nuclear@0 77 typedef class std::basic_ostringstream<
nuclear@0 78 T,CharTraits,Allocator
nuclear@0 79 > stringstream;
nuclear@0 80
nuclear@0 81 public:
nuclear@0 82
nuclear@0 83 basic_formatter() {}
nuclear@0 84
nuclear@0 85 /* Allow basic_formatter<T>'s to be used almost interchangeably
nuclear@0 86 * with std::(w)string or const (w)char* arguments because the
nuclear@0 87 * conversion c'tor is called implicitly. */
nuclear@0 88 template <typename TT>
nuclear@0 89 basic_formatter(const TT& sin) {
nuclear@0 90 underlying << sin;
nuclear@0 91 }
nuclear@0 92
nuclear@0 93
nuclear@0 94 // The problem described here:
nuclear@0 95 // https://sourceforge.net/tracker/?func=detail&atid=1067632&aid=3358562&group_id=226462
nuclear@0 96 // can also cause trouble here. Apparently, older gcc versions sometimes copy temporaries
nuclear@0 97 // being bound to const ref& function parameters. Copying streams is not permitted, though.
nuclear@0 98 // This workaround avoids this by manually specifying a copy ctor.
nuclear@0 99 #if !defined(__GNUC__) || !defined(__APPLE__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
nuclear@0 100 basic_formatter(const basic_formatter& other) {
nuclear@0 101 underlying << (string)other;
nuclear@0 102 }
nuclear@0 103 #endif
nuclear@0 104
nuclear@0 105
nuclear@0 106 public:
nuclear@0 107
nuclear@0 108 operator string () const {
nuclear@0 109 return underlying.str();
nuclear@0 110 }
nuclear@0 111
nuclear@0 112
nuclear@0 113 /* note - this is declared const because binding temporaries does only
nuclear@0 114 * work for const references, so many function prototypes will
nuclear@0 115 * include const basic_formatter<T>& s but might still want to
nuclear@0 116 * modify the formatted string without the need for a full copy.*/
nuclear@0 117 template <typename TToken>
nuclear@0 118 const basic_formatter& operator << (const TToken& s) const {
nuclear@0 119 underlying << s;
nuclear@0 120 return *this;
nuclear@0 121 }
nuclear@0 122
nuclear@0 123 template <typename TToken>
nuclear@0 124 basic_formatter& operator << (const TToken& s) {
nuclear@0 125 underlying << s;
nuclear@0 126 return *this;
nuclear@0 127 }
nuclear@0 128
nuclear@0 129
nuclear@0 130 // comma operator overloaded as well, choose your preferred way.
nuclear@0 131 template <typename TToken>
nuclear@0 132 const basic_formatter& operator, (const TToken& s) const {
nuclear@0 133 underlying << s;
nuclear@0 134 return *this;
nuclear@0 135 }
nuclear@0 136
nuclear@0 137 template <typename TToken>
nuclear@0 138 basic_formatter& operator, (const TToken& s) {
nuclear@0 139 underlying << s;
nuclear@0 140 return *this;
nuclear@0 141 }
nuclear@0 142
nuclear@0 143 // Fix for MSVC8
nuclear@0 144 // See https://sourceforge.net/projects/assimp/forums/forum/817654/topic/4372824
nuclear@0 145 template <typename TToken>
nuclear@0 146 basic_formatter& operator, (TToken& s) {
nuclear@0 147 underlying << s;
nuclear@0 148 return *this;
nuclear@0 149 }
nuclear@0 150
nuclear@0 151
nuclear@0 152 private:
nuclear@0 153 mutable stringstream underlying;
nuclear@0 154 };
nuclear@0 155
nuclear@0 156
nuclear@0 157 typedef basic_formatter< char > format;
nuclear@0 158 typedef basic_formatter< wchar_t > wformat;
nuclear@0 159
nuclear@0 160 } // ! namespace Formatter
nuclear@0 161
nuclear@0 162 } // ! namespace Assimp
nuclear@0 163 #endif