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annotate libs/assimp/irrXMLWrapper.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 #ifndef INCLUDED_AI_IRRXML_WRAPPER
nuclear@0 42 #define INCLUDED_AI_IRRXML_WRAPPER
nuclear@0 43
nuclear@0 44 // some long includes ....
nuclear@0 45 #include "irrXML/irrXML.h"
nuclear@0 46 #include "assimp/IOStream.hpp"
nuclear@0 47 namespace Assimp {
nuclear@0 48
nuclear@0 49 // ---------------------------------------------------------------------------------
nuclear@0 50 /** @brief Utility class to make IrrXML work together with our custom IO system
nuclear@0 51 * See the IrrXML docs for more details.
nuclear@0 52 *
nuclear@0 53 * Construct IrrXML-Reader in BaseImporter::InternReadFile():
nuclear@0 54 * @code
nuclear@0 55 * // open the file
nuclear@0 56 * boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile));
nuclear@0 57 * if( file.get() == NULL) {
nuclear@0 58 * throw DeadlyImportError( "Failed to open file " + pFile + ".");
nuclear@0 59 * }
nuclear@0 60 *
nuclear@0 61 * // generate a XML reader for it
nuclear@0 62 * boost::scoped_ptr<CIrrXML_IOStreamReader> mIOWrapper( new CIrrXML_IOStreamReader( file.get()));
nuclear@0 63 * mReader = irr::io::createIrrXMLReader( mIOWrapper.get());
nuclear@0 64 * if( !mReader) {
nuclear@0 65 * ThrowException( "xxxx: Unable to open file.");
nuclear@0 66 * }
nuclear@0 67 * @endcode
nuclear@0 68 **/
nuclear@0 69 class CIrrXML_IOStreamReader
nuclear@0 70 : public irr::io::IFileReadCallBack
nuclear@0 71 {
nuclear@0 72 public:
nuclear@0 73
nuclear@0 74 // ----------------------------------------------------------------------------------
nuclear@0 75 //! Construction from an existing IOStream
nuclear@0 76 CIrrXML_IOStreamReader(IOStream* _stream)
nuclear@0 77 : stream (_stream)
nuclear@0 78 , t (0)
nuclear@0 79 {
nuclear@0 80
nuclear@0 81 // Map the buffer into memory and convert it to UTF8. IrrXML provides its
nuclear@0 82 // own conversion, which is merely a cast from uintNN_t to uint8_t. Thus,
nuclear@0 83 // it is not suitable for our purposes and we have to do it BEFORE IrrXML
nuclear@0 84 // gets the buffer. Sadly, this forces as to map the whole file into
nuclear@0 85 // memory.
nuclear@0 86
nuclear@0 87 data.resize(stream->FileSize());
nuclear@0 88 stream->Read(&data[0],data.size(),1);
nuclear@0 89
nuclear@0 90 BaseImporter::ConvertToUTF8(data);
nuclear@0 91 }
nuclear@0 92
nuclear@0 93 // ----------------------------------------------------------------------------------
nuclear@0 94 //! Virtual destructor
nuclear@0 95 virtual ~CIrrXML_IOStreamReader() {};
nuclear@0 96
nuclear@0 97 // ----------------------------------------------------------------------------------
nuclear@0 98 //! Reads an amount of bytes from the file.
nuclear@0 99 /** @param buffer: Pointer to output buffer.
nuclear@0 100 * @param sizeToRead: Amount of bytes to read
nuclear@0 101 * @return Returns how much bytes were read. */
nuclear@0 102 virtual int read(void* buffer, int sizeToRead) {
nuclear@0 103 if(sizeToRead<0) {
nuclear@0 104 return 0;
nuclear@0 105 }
nuclear@0 106 if(t+sizeToRead>data.size()) {
nuclear@0 107 sizeToRead = data.size()-t;
nuclear@0 108 }
nuclear@0 109
nuclear@0 110 memcpy(buffer,&data.front()+t,sizeToRead);
nuclear@0 111
nuclear@0 112 t += sizeToRead;
nuclear@0 113 return sizeToRead;
nuclear@0 114 }
nuclear@0 115
nuclear@0 116 // ----------------------------------------------------------------------------------
nuclear@0 117 //! Returns size of file in bytes
nuclear@0 118 virtual int getSize() {
nuclear@0 119 return (int)data.size();
nuclear@0 120 }
nuclear@0 121
nuclear@0 122 private:
nuclear@0 123 IOStream* stream;
nuclear@0 124 std::vector<char> data;
nuclear@0 125 size_t t;
nuclear@0 126
nuclear@0 127 }; // ! class CIrrXML_IOStreamReader
nuclear@0 128
nuclear@0 129 } // ! Assimp
nuclear@0 130
nuclear@0 131 #endif // !! INCLUDED_AI_IRRXML_WRAPPER