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#include <string>
#include <Common/XMLUtils.h>
#include <Poco/DOM/Document.h>
#include <Poco/Util/AbstractConfiguration.h>
namespace DB::XMLUtils
{
using namespace Poco;
using namespace Poco::XML;
using XMLDocumentPtr = Poco::AutoPtr<Document>;
Node * getRootNode(Document * document)
{
for (Node * child = document->firstChild(); child; child = child->nextSibling())
{
/// Besides the root element there can be comment nodes on the top level.
/// Skip them.
if (child->nodeType() == Node::ELEMENT_NODE)
return child;
}
throw Poco::Exception("No root node in document");
}
/// This class is used to access protected parseXXX static methods from AbstractConfiguration
class ParseHelper : private Util::AbstractConfiguration
{
public:
ParseHelper() = delete;
using Util::AbstractConfiguration::parseInt;
using Util::AbstractConfiguration::parseUInt;
using Util::AbstractConfiguration::parseInt64;
using Util::AbstractConfiguration::parseUInt64;
using Util::AbstractConfiguration::parseBool;
static std::string parseString(const std::string & s)
{
return s;
}
template <typename ValueType, bool ReturnDefault, typename ParseFunction>
static ValueType getValue(const Node * node, const std::string & path,
const ValueType & default_value, const ParseFunction & parse_function)
{
const auto * value_node = node->getNodeByPath(path);
if (!value_node)
{
if constexpr (ReturnDefault)
return default_value;
else
throw Poco::NotFoundException(path);
}
return parse_function(value_node->innerText());
}
};
std::string getString(const Node * node, const std::string & path)
{
return ParseHelper::getValue<std::string, false>(node, path, {}, ParseHelper::parseString);
}
std::string getString(const Node * node, const std::string & path, const std::string & default_value)
{
return ParseHelper::getValue<std::string, true>(node, path, default_value, ParseHelper::parseString);
}
Int64 getInt64(const Node * node, const std::string & path)
{
return ParseHelper::getValue<Int64, false>(node, path, {}, ParseHelper::parseInt64);
}
Int64 getInt64(const Node * node, const std::string & path, Int64 default_value)
{
return ParseHelper::getValue<Int64, true>(node, path, default_value, ParseHelper::parseInt64);
}
UInt64 getUInt64(const Node * node, const std::string & path)
{
return ParseHelper::getValue<UInt64, false>(node, path, {}, ParseHelper::parseUInt64);
}
UInt64 getUInt64(const Node * node, const std::string & path, UInt64 default_value)
{
return ParseHelper::getValue<UInt64, true>(node, path, default_value, ParseHelper::parseUInt64);
}
int getInt(const Node * node, const std::string & path)
{
return ParseHelper::getValue<int, false>(node, path, {}, ParseHelper::parseInt);
}
int getInt(const Node * node, const std::string & path, int default_value)
{
return ParseHelper::getValue<int, true>(node, path, default_value, ParseHelper::parseInt);
}
unsigned getUInt(const Node * node, const std::string & path)
{
return ParseHelper::getValue<unsigned, false>(node, path, {}, ParseHelper::parseUInt);
}
unsigned getUInt(const Node * node, const std::string & path, unsigned default_value)
{
return ParseHelper::getValue<unsigned, true>(node, path, default_value, ParseHelper::parseUInt);
}
bool getBool(const Node * node, const std::string & path)
{
return ParseHelper::getValue<bool, false>(node, path, {}, ParseHelper::parseBool);
}
bool getBool(const Node * node, const std::string & path, bool default_value)
{
return ParseHelper::getValue<bool, true>(node, path, default_value, ParseHelper::parseBool);
}
}
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