| /** |
| * 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. |
| */ |
| |
| /* |
| * XSEC |
| * |
| * XSECBinTXFMInputStream := Implement the BinInputStream around Transforms. |
| * |
| * Author(s): Berin Lautenbach |
| * |
| * $ID$ |
| * |
| * $LOG$ |
| * |
| */ |
| |
| |
| #ifndef XSECBINTXFMINPUTSTREAM_INCLUDE |
| #define XSECBINTXFMINPUTSTREAM_INCLUDE |
| |
| #include <xsec/framework/XSECDefs.hpp> |
| #include <xercesc/util/BinInputStream.hpp> |
| |
| class TXFMChain; |
| class TXFMBase; |
| |
| /** |
| * @defgroup interfaces Classes that interface applications to XML Security C. |
| * |
| * These classes and files provide interfaces to allow the XSEC library to link |
| * to other libraries or to allow other libraries/applications to interface |
| * to XSEC. |
| * @{ |
| */ |
| |
| /** |
| * @brief BinInputSource wrapper for a TXFMChain. |
| * |
| * This class provides a wrapper for a TXFMChain. It can be used to either provide |
| * a nice interface to applications wishing to read the BYTESTREAM output of a |
| * TXFM chain, or, as it is derived from BinInputStream, provide an input to the |
| * Xerces Parser. |
| * |
| */ |
| |
| |
| class XSEC_EXPORT XSECBinTXFMInputStream : public XERCES_CPP_NAMESPACE_QUALIFIER BinInputStream |
| { |
| |
| public : |
| |
| /** @name Constructors and Destructors */ |
| //@{ |
| |
| /** |
| * \brief Construct around an existing transform list |
| * |
| * @param lst The input TXFM chain. |
| * @param deleteWhenDone Flag to instruct the class to delete the chain when |
| * done. By default set to true. |
| */ |
| |
| XSECBinTXFMInputStream(TXFMChain * lst, bool deleteWhenDone = true); |
| |
| /** |
| * \brief Destructor |
| * |
| * Delete the object. If deleteWhenDone was set during construction, will |
| * delete the chain if it has not already been done. |
| */ |
| |
| virtual ~XSECBinTXFMInputStream(); |
| |
| //@} |
| |
| /** @name Stream management methods */ |
| //@{ |
| |
| /** |
| * \brief Reset the stream. |
| * |
| * @note At this time simply deletes the TXFM chain - many TXFMs do not |
| * have an ability to reset. |
| */ |
| |
| void reset(); |
| |
| //@} |
| |
| /** @name Interface */ |
| //@{ |
| |
| /** |
| * \brief Current position in stream. |
| * |
| * @returns Bytes already returned. |
| */ |
| |
| virtual XMLFilePos curPos() const; |
| |
| /** |
| * \brief Retrieve the required number of bytes and return |
| * |
| * Retrieve up to the requested number of bytes. Does not always |
| * retrieve as much as requested, but will always retrieve something |
| * until completed. |
| * |
| * @note When complete, will return 0 and delete the TXFM chain if |
| * requested to do so in the constructor. |
| * @param toFill The buffer that will be read into. |
| * @param maxToRead Maximum number of bytes to return |
| * @returns The number of bytes read or 0 if complete. |
| */ |
| |
| virtual XMLSize_t readBytes(XMLByte* const toFill, |
| const XMLSize_t maxToRead); |
| |
| |
| const XMLCh* getContentType() const; |
| |
| private : |
| |
| TXFMBase * mp_txfm; // End point of list |
| TXFMChain * mp_chain; // The actual chain |
| bool m_deleteWhenDone; // Do we delete? |
| bool m_deleted; // Have we deleted? |
| bool m_done; // Are we done? |
| XMLSize_t m_currentIndex; // How much read? |
| |
| }; |
| |
| |
| |
| #endif |