95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LOG4CXX_HELPERS_FILEINPUTSTREAM_H
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#define _LOG4CXX_HELPERS_FILEINPUTSTREAM_H
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#include <log4cxx/helpers/inputstream.h>
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#include <log4cxx/file.h>
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#include <log4cxx/helpers/pool.h>
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namespace log4cxx
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{
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namespace helpers {
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/**
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* InputStream implemented on top of APR file IO.
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* @since 0.9.8
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*/
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class LOG4CXX_EXPORT FileInputStream : public InputStream
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{
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private:
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Pool pool;
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apr_file_t* fileptr;
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public:
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DECLARE_ABSTRACT_LOG4CXX_OBJECT(FileInputStream)
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BEGIN_LOG4CXX_CAST_MAP()
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LOG4CXX_CAST_ENTRY(FileInputStream)
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LOG4CXX_CAST_ENTRY_CHAIN(InputStream)
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END_LOG4CXX_CAST_MAP()
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/**
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* Creates a FileInputStream by opening a connection to an actual
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* file, the file named by the path name name in the file system.
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*
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* @param filename The system-dependent file name.
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*/
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FileInputStream(const LogString& filename);
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/**
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* Creates a FileInputStream by opening a connection to an actual
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* file, the file named by the File object file in the file system.
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*
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* @param aFile The file to be opened for reading.
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*/
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FileInputStream(const File& aFile);
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virtual ~FileInputStream();
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/**
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* Closes this file input stream and releases any system
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* resources associated with the stream.
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*/
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virtual void close();
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/**
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* Reads a sequence of bytes into the given buffer.
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*
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* @param dst The buffer into which bytes are to be transferred.
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* @return the total number of bytes read into the buffer, or -1 if there
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* is no more data because the end of the stream has been reached.
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*/
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virtual int read(ByteBuffer& buf);
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private:
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FileInputStream(const FileInputStream&);
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FileInputStream& operator=(const FileInputStream&);
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};
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typedef helpers::ObjectPtrT<FileInputStream> FileInputStreamPtr;
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} // namespace helpers
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} //namespace log4cxx
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#endif //_LOG4CXX_HELPERS_FILEINPUTSTREAM_H
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