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#include "uscxml/Common.h"
#include "uscxml/config.h"
#include "SWIDataModel.h"
#include "uscxml/Message.h"
#include <glog/logging.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool connect(pluma::Host& host) {
host.add( new SWIDataModelProvider() );
return true;
}
#endif
SWIDataModel::SWIDataModel() {
}
boost::shared_ptr<DataModelImpl> SWIDataModel::create(InterpreterImpl* interpreter) {
boost::shared_ptr<SWIDataModel> dm = boost::shared_ptr<SWIDataModel>(new SWIDataModel());
dm->_interpreter = interpreter;
const char* swibin = getenv("SWI_BINARY");
if (swibin == NULL)
swibin = SWI_BINARY;
const char* quiet = "--quiet";
static char * av[] = {
(char*)swibin,
(char*)quiet,
// "-s",
// "/Users/sradomski/Documents/TK/Code/pl-devel/demo/likes.pl",
NULL
};
if(!PL_initialise(2,av)) {
LOG(ERROR) << "Error intializing prolog engine";
PL_halt(1);
return boost::shared_ptr<DataModelImpl>();
}
// load SWI XML parser
PlCall("use_module", PlCompound("library", PlTerm("sgml")));
PlCall("assert", PlCompound("sessionId", PlTerm(PlString(dm->_interpreter->getSessionId().c_str()))));
PlCall("assert", PlCompound("name", PlTerm(PlString(dm->_interpreter->getName().c_str()))));
PlCall("assert(eventName(X) :- event(Y,_), arg(1, Y, X)).");
return dm;
}
void SWIDataModel::registerIOProcessor(const std::string& name, const IOProcessor& ioprocessor) {
// std::cout << "SWIDataModel::registerIOProcessor" << std::endl;
}
void SWIDataModel::setSessionId(const std::string& sessionId) {
// std::cout << "SWIDataModel::setSessionId" << std::endl;
_sessionId = sessionId;
}
void SWIDataModel::setName(const std::string& name) {
// std::cout << "SWIDataModel::setName" << std::endl;
_name = name;
}
SWIDataModel::~SWIDataModel() {
}
void SWIDataModel::pushContext() {
// std::cout << "SWIDataModel::pushContext" << std::endl;
}
void SWIDataModel::popContext() {
// std::cout << "SWIDataModel::popContext" << std::endl;
}
void SWIDataModel::initialize() {
// std::cout << "SWIDataModel::initialize" << std::endl;
}
void SWIDataModel::setEvent(const Event& event) {
// remove old event
PlCall("system", "retractall", PlTermv("event"));
PlTermv plEvent(7);
plEvent[0] = PlCompound("name", PlTerm(PlString(event.name.c_str())));
plEvent[1] = PlCompound("raw", PlTerm(PlString(event.raw.c_str())));
plEvent[2] = PlCompound("origin", PlTerm(PlString(event.origin.c_str())));
plEvent[3] = PlCompound("origintype", PlTerm(PlString(event.origintype.c_str())));
plEvent[4] = PlCompound("data", PlTerm(PlString(event.content.c_str())));
Event::params_t::const_iterator paramIter;
// count unique keys in params
paramIter = event.params.begin();
size_t uniqueKeys = 0;
while(paramIter != event.params.end()) {
uniqueKeys++;
paramIter = event.params.upper_bound(paramIter->first);
}
// create a compund for every unique key
PlTermv paramTerm(uniqueKeys);
paramIter = event.params.begin();
for(int i = 0; paramIter != event.params.end(); i++) {
Event::params_t::const_iterator lastValueIter = event.params.upper_bound(paramIter->first);
size_t items = event.params.count(paramIter->first);
PlTermv keyTerm(items);
for (int j = 0; paramIter != lastValueIter; j++) {
keyTerm[j] = PlString(paramIter->second.c_str());
paramIter++;
}
paramTerm[i] = PlCompound(paramIter->first.c_str(), keyTerm);
paramIter = lastValueIter;
}
plEvent[5] = PlCompound("params", paramTerm);
PlTerm type;
switch (event.type) {
case Event::PLATFORM:
type = "platform";
break;
case Event::INTERNAL:
type = "internal";
break;
case Event::EXTERNAL:
type = "external";
break;
}
plEvent[6] = PlCompound("type", type);
PlCall("assert", PlCompound("event", plEvent));
}
Data SWIDataModel::getStringAsData(const std::string& content) {
// std::cout << "SWIDataModel::getStringAsData" << std::endl;
Data data;
return data;
}
bool SWIDataModel::validate(const std::string& location, const std::string& schema) {
// std::cout << "SWIDataModel::validate" << std::endl;
return true;
}
uint32_t SWIDataModel::getLength(const std::string& expr) {
// std::cout << "SWIDataModel::getLength" << std::endl;
return 0;
}
void SWIDataModel::setForeach(const std::string& item,
const std::string& array,
const std::string& index,
uint32_t iteration) {
// std::cout << "SWIDataModel::setForeach" << std::endl;
}
void SWIDataModel::eval(const std::string& expr) {
URL localPLFile = URL::toLocalFile(expr, ".pl");
PlCall("user", "load_files", PlTermv(localPLFile.asLocalFile(".pl").c_str())) || LOG(ERROR) << "Could not execute prolog from file";
}
bool SWIDataModel::evalAsBool(const std::string& expr) {
PlCompound compound(expr.c_str());
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
PlQuery query(compound.name(), termv);
return query.next_solution() > 0;
}
std::string SWIDataModel::evalAsString(const std::string& expr) {
PlCompound compound(expr.c_str());
if (strlen(compound.name())) {
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
PlQuery query(compound.name(), termv);
std::stringstream ss;
const char* separator = "";
while (query.next_solution()) {
for (int i = 0; i < compound.arity(); i++) {
ss << separator << (char *)termv[i];
separator = ", ";
}
}
return ss.str();
}
return std::string(compound);
}
void SWIDataModel::assign(const Arabica::DOM::Element<std::string>& assignElem,
const Arabica::DOM::Document<std::string>& doc,
const std::string& content) {
std::string expr = content;
if (HAS_ATTR(assignElem, "expr")) {
expr = ATTR(assignElem, "expr");
}
if (expr.length() > 0)
eval(expr);
}
void SWIDataModel::assign(const std::string& location, const Data& data) {
eval(data.atom);
}
void SWIDataModel::init(const Arabica::DOM::Element<std::string>& dataElem,
const Arabica::DOM::Document<std::string>& doc,
const std::string& content) {
std::string key;
if (HAS_ATTR(dataElem, "id")) {
key = ATTR(dataElem, "id");
} else if (HAS_ATTR(dataElem, "location")) {
key = ATTR(dataElem, "location");
}
assign(dataElem, doc, content);
}
void SWIDataModel::init(const std::string& location, const Data& data) {}
bool SWIDataModel::isDeclared(const std::string& expr) {
return true;
}
}
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