bool indri::file::BulkBlock::getIndex( int index, char* key, int& keyActual, int keyLength, char* value, int& valueActual, int valueLength ) {
int count = *(UINT16*) _buffer;
keyActual = 0;
valueActual = 0;
if( index < 0 || index >= count )
return false;
if( key ) {
int keyStart = _keyStart( index );
int keyEnd = _keyEnd( index );
keyActual = lemur_compat::min( keyEnd - keyStart, keyLength );
memcpy( key, _buffer + keyStart, keyActual );
}
if( value ) {
int valueStart = _valueStart( index );
int valueEnd = _valueEnd( index );
valueActual = lemur_compat::min( valueEnd - valueStart, valueLength );
memcpy( value, _buffer + valueStart, valueActual );
}
return true;
}
inline int indri::file::BulkBlock::_keyStart( int index ) {
return _valueEnd( index-1 );
}
inline int indri::file::BulkBlock::_dataEnd() {
return _valueEnd( count()-1 );
}
inline int indri::file::BulkBlock::_keyStart(int index) {
return _valueEnd(index - 1); // key start of index equals with value end of index - 1
}
