| /************************************************************** |
| * |
| * 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef _VOS_STREAM_HXX_ |
| #define _VOS_STREAM_HXX_ |
| |
| # include <vos/types.hxx> |
| # include <vos/object.hxx> |
| # include <vos/istream.hxx> |
| |
| namespace vos |
| { |
| |
| /** Adds seeking capabilities to IStream |
| */ |
| class IPositionableStream : public vos::IStream |
| { |
| |
| public: |
| |
| typedef sal_Int32 Offset; |
| |
| public: |
| |
| /// |
| virtual sal_Bool SAL_CALL seekTo(Offset position) const = 0; |
| |
| /// |
| virtual sal_Bool SAL_CALL seekRelative(Offset change) const = 0; |
| |
| /// |
| virtual sal_Bool SAL_CALL seekToEnd() const = 0; |
| |
| /// |
| virtual sal_Bool SAL_CALL changeSize(sal_uInt32 new_size) = 0; |
| |
| /// |
| virtual sal_uInt32 SAL_CALL getSize() const = 0; |
| |
| |
| /// |
| virtual Offset SAL_CALL getOffset() const = 0; |
| |
| |
| protected: |
| IPositionableStream() { } |
| virtual ~IPositionableStream() { } |
| |
| }; |
| |
| |
| /** Implements IPositionableStream |
| */ |
| class OStream : public vos::OObject, |
| public vos::IPositionableStream |
| { |
| VOS_DECLARE_CLASSINFO(VOS_NAMESPACE(OStream, vos)); |
| |
| public: |
| |
| /// |
| OStream(IPositionableStream& rStream); |
| |
| /// |
| virtual ~OStream (); |
| |
| // ----------------- Read operations ------------------------- |
| |
| /// |
| virtual sal_Int32 SAL_CALL read(void* pbuffer, sal_uInt32 n) const; |
| |
| /// |
| sal_Int32 SAL_CALL read(IPositionableStream::Offset offset, |
| void* pbuffer, |
| sal_uInt32 n) const; |
| |
| /// |
| inline sal_Bool SAL_CALL read(sal_Int32& value) const; |
| |
| /// |
| inline sal_Bool SAL_CALL read(sal_Int16& value) const; |
| |
| /// |
| inline sal_Bool SAL_CALL read(sal_Char& value) const; |
| |
| /// |
| inline sal_Bool SAL_CALL read(sal_uInt8& value) const; |
| |
| // ----------------- Write operations ------------------------ |
| |
| /// |
| virtual sal_Int32 SAL_CALL write(const void* pbuffer, sal_uInt32 n); |
| |
| /// |
| sal_Int32 SAL_CALL write(IPositionableStream::Offset offset, |
| const void* pbuffer, |
| sal_uInt32 n); |
| /// |
| inline sal_Bool SAL_CALL write(sal_Int32 value); |
| |
| /// |
| inline sal_Bool SAL_CALL write(sal_Int16 value); |
| |
| /// |
| inline sal_Bool SAL_CALL write(sal_Char value); |
| |
| /// |
| inline sal_Bool SAL_CALL write(sal_uInt8 value); |
| |
| /// |
| sal_Bool SAL_CALL append(void* pbuffer, sal_uInt32 n); // Write at the end of the Stream. |
| |
| // ------------- Positioning and sizing operations ---------- |
| |
| /// |
| inline sal_Bool SAL_CALL seekToBegin() const; |
| |
| // ----------------- Stream interface ------------------------ |
| |
| /// |
| virtual sal_Bool SAL_CALL seekTo(IPositionableStream::Offset pos) const; |
| |
| /// |
| virtual sal_Bool SAL_CALL seekToEnd() const; |
| |
| /// |
| virtual sal_Bool SAL_CALL seekRelative(IPositionableStream::Offset change) const; |
| |
| /// |
| virtual sal_Bool SAL_CALL changeSize(sal_uInt32 new_size); |
| |
| /// |
| virtual sal_uInt32 SAL_CALL getSize() const; |
| |
| /// |
| virtual sal_Bool SAL_CALL isEof() const; |
| |
| /// |
| virtual IPositionableStream::Offset SAL_CALL getOffset() const; |
| |
| protected: |
| IPositionableStream& m_rStream; |
| |
| // ----------------- Stream operators ------------------------ |
| |
| friend const OStream& operator>> (OStream& rStream, sal_Int32& value); |
| friend const OStream& operator>> (OStream& rStream, sal_Int16& value); |
| friend const OStream& operator>> (OStream& rStream, sal_uInt8& value); |
| friend const OStream& operator>> (OStream& rStream, sal_Char& value); |
| friend OStream& operator<< (OStream& rStream, sal_Int32 value); |
| friend OStream& operator<< (OStream& rStream, sal_Int16 value); |
| friend OStream& operator<< (OStream& rStream, sal_uInt8 value); |
| friend OStream& operator<< (OStream& rStream, sal_Char value); |
| }; |
| |
| inline sal_Bool OStream::read(sal_Int32& value) const |
| { |
| return (read(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::read(sal_Int16& value) const |
| { |
| return (read(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::read(sal_Char& value) const |
| { |
| return (read(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::read(sal_uInt8& value) const |
| { |
| return (read(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::write(sal_Int32 value) |
| { |
| return (write(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::write(sal_Int16 value) |
| { |
| return (write(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::write(sal_Char value) |
| { |
| return (write(&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::write(sal_uInt8 value) |
| { |
| return (write((sal_uInt8*)&value, sizeof(value)) == sizeof(value)); |
| } |
| |
| inline sal_Bool OStream::seekToBegin() const |
| { |
| return (seekTo(0L)); |
| } |
| |
| inline const OStream& operator>> (OStream& rStream, sal_Int32& value) |
| { |
| rStream.read(value); |
| |
| return (rStream); |
| } |
| |
| inline const OStream& operator>> (OStream& rStream, sal_Int16& value) |
| { |
| rStream.read(value); |
| |
| return (rStream); |
| } |
| |
| inline const OStream& operator>> (OStream& rStream, sal_uInt8& value) |
| { |
| rStream.read(value); |
| |
| return (rStream); |
| } |
| |
| inline const OStream& operator>> (OStream& rStream, sal_Char& value) |
| { |
| rStream.read(value); |
| |
| return (rStream); |
| } |
| |
| inline OStream& operator<< (OStream& rStream, sal_Int32 value) |
| { |
| rStream.write(value); |
| |
| return (rStream); |
| } |
| |
| inline OStream& operator<< (OStream& rStream, sal_Int16 value) |
| { |
| rStream.write(value); |
| |
| return (rStream); |
| } |
| |
| inline OStream& operator<< (OStream& rStream, sal_uInt8 value) |
| { |
| rStream.write(value); |
| |
| return (rStream); |
| } |
| |
| inline OStream& operator<< (OStream& rStream, sal_Char value) |
| { |
| rStream.write(value); |
| |
| return (rStream); |
| } |
| |
| } |
| |
| #endif // _VOS_STREAM_HXX_ |
| |
| |