BUgfixes regarding filepos setupBUgfixes regarding filepos setup.
parent
33e370a8b7
commit
d3a3bd9c12
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@ -114,7 +114,6 @@ private:
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mutable size_t mCachedSize;
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};
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// ----------------------------------------------------------------------------------
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inline DefaultIOStream::DefaultIOStream () :
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mFile (NULL),
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@ -124,7 +123,6 @@ inline DefaultIOStream::DefaultIOStream () :
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// empty
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}
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// ----------------------------------------------------------------------------------
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inline DefaultIOStream::DefaultIOStream (FILE* pFile,
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const std::string &strFilename) :
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@ -41,91 +41,22 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assimp/types.h>
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#include <iostream>
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namespace Assimp {
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#include <assimp/IOStream.hpp>
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class IOStream;
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#include <iostream>
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namespace Assimp {
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template<class T>
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class IOStreamBuffer {
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public:
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IOStreamBuffer( size_t cache = 4096 )
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: m_stream( nullptr )
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, m_filesize( 0 )
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, m_cacheSize( cache )
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, m_cachePos( 0 )
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, m_filePos( 0 ) {
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m_cache.resize( cache );
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std::fill( m_cache.begin(), m_cache.end(), '\0' );
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}
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~IOStreamBuffer() {
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}
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bool open( IOStream *stream ) {
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if ( nullptr == stream ) {
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return false;
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}
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m_stream = stream;
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m_filesize = m_stream->FileSize();
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if ( m_filesize == 0 ) {
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return false;
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}
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return true;
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}
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bool close() {
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if ( nullptr == m_stream ) {
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return false;
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}
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m_stream = nullptr;
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m_filesize =0;
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return true;
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}
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size_t size() const {
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return m_filesize;
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}
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bool readNextBlock() {
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m_stream->Seek( m_filePos, aiOrigin_SET );
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size_t readLen = m_stream->Read( &m_cache[ 0 ], sizeof( T ), m_cacheSize );
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if ( readLen == 0 ) {
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return false;
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}
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m_filePos += m_cacheSize;
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m_cachePos = 0;
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return true;
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}
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bool getNextLine( std::vector<T> &buffer ) {
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buffer.resize( m_cacheSize );
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::memset( &buffer[ 0 ], ' ', m_cacheSize );
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if ( m_cachePos == m_cacheSize || 0 == m_filePos ) {
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if ( !readNextBlock() ) {
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return false;
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}
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}
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size_t i = 0;
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while ( !IsLineEnd( m_cache[ m_cachePos ] ) ) {
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buffer[ i ] = m_cache[ m_cachePos ];
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m_cachePos++;
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i++;
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if ( m_cachePos >= m_cacheSize ) {
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if ( !readNextBlock() ) {
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return false;
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}
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}
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}
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buffer[ i ]='\n';
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m_cachePos++;
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return true;
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}
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IOStreamBuffer( size_t cache = 4096 * 4096 );
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~IOStreamBuffer();
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bool open( IOStream *stream );
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bool close();
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size_t size() const;
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bool readNextBlock();
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bool getNextLine( std::vector<T> &buffer );
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private:
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IOStream *m_stream;
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@ -136,4 +67,104 @@ private:
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size_t m_filePos;
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};
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template<class T>
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inline
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IOStreamBuffer<T>::IOStreamBuffer( size_t cache = 4096 * 4096 )
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: m_stream( nullptr )
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, m_filesize( 0 )
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, m_cacheSize( cache )
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, m_cachePos( 0 )
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, m_filePos( 0 ) {
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m_cache.resize( cache );
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std::fill( m_cache.begin(), m_cache.end(), '\0' );
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}
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template<class T>
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inline
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IOStreamBuffer<T>::~IOStreamBuffer() {
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// empty
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}
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template<class T>
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inline
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bool IOStreamBuffer<T>::open( IOStream *stream ) {
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if ( nullptr == stream ) {
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return false;
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}
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m_stream = stream;
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m_filesize = m_stream->FileSize();
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if ( m_filesize == 0 ) {
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return false;
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}
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if ( m_filesize < m_cacheSize ) {
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m_cacheSize = m_filesize;
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}
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return true;
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}
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template<class T>
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inline
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bool IOStreamBuffer<T>::close() {
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if ( nullptr == m_stream ) {
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return false;
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}
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m_stream = nullptr;
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m_filesize = 0;
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return true;
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}
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template<class T>
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inline
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size_t IOStreamBuffer<T>::size() const {
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return m_filesize;
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}
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template<class T>
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inline
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bool IOStreamBuffer<T>::readNextBlock() {
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m_stream->Seek( m_filePos, aiOrigin_SET );
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size_t readLen = m_stream->Read( &m_cache[ 0 ], sizeof( T ), m_cacheSize );
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if ( readLen == 0 ) {
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return false;
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}
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if ( readLen < m_cacheSize ) {
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m_cacheSize = readLen;
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}
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m_filePos += m_cacheSize;
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m_cachePos = 0;
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return true;
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}
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template<class T>
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inline
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bool IOStreamBuffer<T>::getNextLine( std::vector<T> &buffer ) {
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buffer.resize( m_cacheSize );
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::memset( &buffer[ 0 ], '\n', m_cacheSize );
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if ( m_cachePos == m_cacheSize || 0 == m_filePos ) {
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if ( !readNextBlock() ) {
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return false;
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}
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}
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size_t i = 0;
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while ( !IsLineEnd( m_cache[ m_cachePos ] ) ) {
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buffer[ i ] = m_cache[ m_cachePos ];
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m_cachePos++;
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i++;
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if ( m_cachePos >= m_cacheSize ) {
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if ( !readNextBlock() ) {
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return false;
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}
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}
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}
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m_cachePos++;
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return true;
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}
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} // !ns Assimp
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