/**
* Relational pipes
* Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <istream>
#include <xercesc/sax/InputSource.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/BinInputStream.hpp>
namespace relpipe {
namespace in {
namespace xml {
class StreamInputSource : public xercesc::InputSource {
private:
std::istream& input;
class StreamBinInputStream : public xercesc::BinInputStream {
private:
std::istream& input;
public:
StreamBinInputStream(std::istream& input) : BinInputStream(), input(input) {
}
XMLFilePos curPos() const override {
return input.tellg();
}
const XMLCh* getContentType() const override {
return nullptr;
}
XMLSize_t readBytes(XMLByte * const toFill, const XMLSize_t maxToRead) override {
input.read((char*) toFill, maxToRead);
return input.gcount();
}
};
public:
StreamInputSource(std::istream& input, xercesc::MemoryManager * const manager = xercesc::XMLPlatformUtils::fgMemoryManager) : InputSource(manager), input(input) {
}
virtual ~StreamInputSource() {
}
xercesc::BinInputStream* makeStream() const override {
// TODO: avoid multiple calls, input can be used only once
return new StreamBinInputStream(input);
}
};
}
}
}