| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #include <precomp.h> |
| #include <cosv/mbstream.hxx> |
| |
| // NOT FULLY DECLARED SERVICES |
| #include <string.h> |
| |
| |
| namespace csv |
| { |
| |
| |
| |
| mbstream::mbstream( uintt i_nSize ) |
| : dpOwnedMemorySpace( new char[i_nSize+1] ), |
| nSize( i_nSize ), |
| nCurPosition( 0 ) |
| { |
| dpOwnedMemorySpace[i_nSize] = '\0'; |
| } |
| |
| mbstream::~mbstream() |
| { |
| delete [] dpOwnedMemorySpace; |
| } |
| |
| void |
| mbstream::resize( uintt i_nSize ) |
| { |
| DYN char * pNew = new char[i_nSize]; |
| memcpy( pNew, dpOwnedMemorySpace, min(i_nSize,nSize) ); |
| delete [] dpOwnedMemorySpace; |
| dpOwnedMemorySpace = pNew; |
| nSize = i_nSize; |
| } |
| |
| uintt |
| mbstream::do_read( void * out_pDest, |
| uintt i_nNrofBytes ) |
| { |
| uintt ret = min( i_nNrofBytes, nSize - nCurPosition ); |
| memcpy( out_pDest, dpOwnedMemorySpace, ret ); |
| nCurPosition += ret; |
| return ret; |
| } |
| |
| bool |
| mbstream::inq_eod() const |
| { |
| return nCurPosition == nSize; |
| } |
| |
| uintt |
| mbstream::do_write( const void * i_pSrc, |
| uintt i_nNrofBytes ) |
| { |
| resize( max( 3 * (nSize+1) / 2, nCurPosition + i_nNrofBytes) ); |
| memcpy( dpOwnedMemorySpace+nCurPosition, i_pSrc, i_nNrofBytes ); |
| nCurPosition += i_nNrofBytes; |
| return i_nNrofBytes; |
| } |
| |
| uintt |
| mbstream::do_seek( intt i_nDistance, |
| seek_dir i_eStartPoint ) |
| { |
| switch ( i_eStartPoint ) |
| { |
| case beg: if ( uintt(i_nDistance) < nSize ) |
| nCurPosition = uintt(i_nDistance); |
| break; |
| case cur: if ( i_nDistance < 0 |
| ? uintt(-i_nDistance) <= nCurPosition |
| : uintt(i_nDistance) + nCurPosition < nSize ) |
| nCurPosition = uintt( intt(nCurPosition) + i_nDistance ); |
| break; |
| case end: if ( i_nDistance < 0 |
| AND uintt(-i_nDistance) < nSize - 1 ) |
| nCurPosition = uintt( intt(nSize) - 1 + i_nDistance ); |
| break; |
| } |
| return position(); |
| } |
| |
| uintt |
| mbstream::inq_position() const |
| { |
| return nCurPosition; |
| } |
| |
| |
| } // namespace csv |
| |
