| /** |
| * 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 |
| * |
| * TXFMConcatChain := Takes multiple input chains and then provides |
| * BYTE_STREAM output for each chain in order. |
| * |
| * $Id$ |
| * |
| */ |
| |
| #include <xsec/framework/XSECDefs.hpp> |
| |
| #include <xsec/transformers/TXFMChain.hpp> |
| #include <xsec/transformers/TXFMConcatChains.hpp> |
| #include <xsec/framework/XSECError.hpp> |
| |
| XERCES_CPP_NAMESPACE_USE |
| |
| TXFMConcatChains::TXFMConcatChains(DOMDocument *doc) : |
| TXFMBase(doc), |
| mp_currentTxfm(NULL), |
| m_currentChain(0), |
| m_complete(false) { |
| |
| } |
| |
| TXFMConcatChains::~TXFMConcatChains() { |
| |
| size_type i, s; |
| s = m_chains.size(); |
| |
| for (i = 0; i < s; ++i) |
| delete m_chains[i]; |
| |
| m_chains.clear(); |
| |
| } |
| |
| void TXFMConcatChains::setInput(TXFMBase *newInput) { |
| |
| size_type i = m_chains.size(); |
| |
| if (i == 0) { |
| throw XSECException(XSECException::TransformInputOutputFail, |
| "TXFMConcatChains::setInput - Cannot concatinate new base transform until at least one chain is added"); |
| } |
| |
| m_chains[i-1]->getLastTxfm()->setInput(newInput); |
| |
| } |
| |
| void TXFMConcatChains::setInput(TXFMChain *newInputChain) { |
| |
| m_chains.push_back(newInputChain); |
| |
| } |
| |
| TXFMBase::ioType TXFMConcatChains::getInputType(void) const { |
| |
| return TXFMBase::BYTE_STREAM; |
| |
| } |
| |
| TXFMBase::ioType TXFMConcatChains::getOutputType(void) const { |
| |
| return TXFMBase::BYTE_STREAM; |
| |
| } |
| |
| TXFMBase::nodeType TXFMConcatChains::getNodeType(void) const { |
| |
| return TXFMBase::DOM_NODE_NONE; |
| |
| } |
| |
| // Methods to get output data |
| |
| unsigned int TXFMConcatChains::readBytes(XMLByte * const toFill, const unsigned int maxToFill) { |
| |
| if (m_complete == true) |
| return 0; |
| |
| // Is this the first one? |
| if (mp_currentTxfm == NULL) { |
| |
| if (m_chains.size() == 0) { |
| throw XSECException(XSECException::TransformInputOutputFail, |
| "TXFMConcatChains::readBytes - Cannot read bytes until chains added"); |
| } |
| |
| m_currentChain = 0; |
| mp_currentTxfm = m_chains[m_currentChain]->getLastTxfm(); |
| |
| } |
| |
| unsigned int bytesRead = 0; |
| unsigned int lastBytesRead = 0; |
| |
| while (!m_complete && bytesRead < maxToFill) { |
| |
| lastBytesRead = mp_currentTxfm->readBytes(&toFill[bytesRead], maxToFill - bytesRead); |
| if (lastBytesRead == 0) { |
| |
| if (++m_currentChain == m_chains.size()) |
| m_complete = true; |
| else |
| mp_currentTxfm = m_chains[m_currentChain]->getLastTxfm(); |
| |
| } |
| else { |
| bytesRead += lastBytesRead; |
| } |
| |
| } |
| |
| return bytesRead; |
| |
| } |