| /* |
| 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. |
| |
| ---------------------------------------------------------------------- |
| */ |
| |
| #ifndef INCLUDED_AI_IRRXML_WRAPPER |
| #define INCLUDED_AI_IRRXML_WRAPPER |
| |
| // some long includes .... |
| #include <irrXML.h> |
| #include "./../include/assimp/IOStream.hpp" |
| #include "BaseImporter.h" |
| #include <vector> |
| |
| namespace Assimp { |
| |
| // --------------------------------------------------------------------------------- |
| /** @brief Utility class to make IrrXML work together with our custom IO system |
| * See the IrrXML docs for more details. |
| * |
| * Construct IrrXML-Reader in BaseImporter::InternReadFile(): |
| * @code |
| * // open the file |
| * std::unique_ptr<IOStream> file( pIOHandler->Open( pFile)); |
| * if( file.get() == NULL) { |
| * throw DeadlyImportError( "Failed to open file " + pFile + "."); |
| * } |
| * |
| * // generate a XML reader for it |
| * std::unique_ptr<CIrrXML_IOStreamReader> mIOWrapper( new CIrrXML_IOStreamReader( file.get())); |
| * mReader = irr::io::createIrrXMLReader( mIOWrapper.get()); |
| * if( !mReader) { |
| * ThrowException( "xxxx: Unable to open file."); |
| * } |
| * @endcode |
| **/ |
| class CIrrXML_IOStreamReader : public irr::io::IFileReadCallBack { |
| public: |
| |
| // ---------------------------------------------------------------------------------- |
| //! Construction from an existing IOStream |
| explicit CIrrXML_IOStreamReader(IOStream* _stream) |
| : stream (_stream) |
| , t (0) |
| { |
| |
| // Map the buffer into memory and convert it to UTF8. IrrXML provides its |
| // own conversion, which is merely a cast from uintNN_t to uint8_t. Thus, |
| // it is not suitable for our purposes and we have to do it BEFORE IrrXML |
| // gets the buffer. Sadly, this forces us to map the whole file into |
| // memory. |
| |
| data.resize(stream->FileSize()); |
| stream->Read(&data[0],data.size(),1); |
| |
| // Remove null characters from the input sequence otherwise the parsing will utterly fail |
| unsigned int size = 0; |
| unsigned int size_max = static_cast<unsigned int>(data.size()); |
| for(unsigned int i = 0; i < size_max; i++) { |
| if(data[i] != '\0') { |
| data[size++] = data[i]; |
| } |
| } |
| data.resize(size); |
| |
| BaseImporter::ConvertToUTF8(data); |
| } |
| |
| // ---------------------------------------------------------------------------------- |
| //! Virtual destructor |
| virtual ~CIrrXML_IOStreamReader() {} |
| |
| // ---------------------------------------------------------------------------------- |
| //! Reads an amount of bytes from the file. |
| /** @param buffer: Pointer to output buffer. |
| * @param sizeToRead: Amount of bytes to read |
| * @return Returns how much bytes were read. */ |
| virtual int read(void* buffer, int sizeToRead) { |
| if(sizeToRead<0) { |
| return 0; |
| } |
| if(t+sizeToRead>data.size()) { |
| sizeToRead = static_cast<int>(data.size()-t); |
| } |
| |
| memcpy(buffer,&data.front()+t,sizeToRead); |
| |
| t += sizeToRead; |
| return sizeToRead; |
| } |
| |
| // ---------------------------------------------------------------------------------- |
| //! Returns size of file in bytes |
| virtual int getSize() { |
| return (int)data.size(); |
| } |
| |
| private: |
| IOStream* stream; |
| std::vector<char> data; |
| size_t t; |
| |
| }; // ! class CIrrXML_IOStreamReader |
| |
| } // ! Assimp |
| |
| #endif // !! INCLUDED_AI_IRRXML_WRAPPER |