/*

 * 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.

 */

/*

 * $Id: UnixHTTPURLInputStream.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#if !defined(UNIXHTTPURLINPUTSTREAM_HPP)

#define UNIXHTTPURLINPUTSTREAM_HPP

#include <xercesc/util/XMLURL.hpp>

#include <xercesc/util/XMLExceptMsgs.hpp>

#include <xercesc/util/BinInputStream.hpp>

#include <xercesc/util/XMLNetAccessor.hpp>

XERCES_CPP_NAMESPACE_BEGIN

//

// This class implements the BinInputStream interface specified by the XML

// parser.

//

class XMLUTIL_EXPORT UnixHTTPURLInputStream : public BinInputStream

{

public :

    UnixHTTPURLInputStream(const XMLURL&  urlSource, const XMLNetHTTPInfo* httpInfo=0);

    ~UnixHTTPURLInputStream();

    unsigned int curPos() const;

    unsigned int readBytes

    (

                XMLByte* const  toFill

        , const unsigned int    maxToRead

    );

private :

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    UnixHTTPURLInputStream(const UnixHTTPURLInputStream&);

    UnixHTTPURLInputStream& operator=(const UnixHTTPURLInputStream&);

    // -----------------------------------------------------------------------

    //  Private data members

    //

    //  fSocket

    //      The socket representing the connection to the remote file.

    //  fBytesProcessed

    //      Its a rolling count of the number of bytes processed off this

    //      input stream.

    //  fBuffer

    //      Holds the http header, plus the first part of the actual

    //      data.  Filled at the time the stream is opened, data goes

    //      out to user in response to readBytes().

    //  fBufferPos, fBufferEnd

    //      Pointers into fBuffer, showing start and end+1 of content

    //      that readBytes must return.

    // -----------------------------------------------------------------------

    int                 fSocket;

    unsigned int        fBytesProcessed;

    char                fBuffer[4000];

    char *              fBufferEnd;

    char *              fBufferPos;

    MemoryManager*      fMemoryManager;

}; // UnixHTTPURLInputStream

inline unsigned int UnixHTTPURLInputStream::curPos() const

{

    return fBytesProcessed;

}

XERCES_CPP_NAMESPACE_END

#endif // UNIXHTTPURLINPUTSTREAM_HPP