W3C MMI Architecture framework

1 files changed, 191 insertions, 0 deletions

diff --git a/apps/uscxml-browser.cpp b/apps/uscxml-browser.cpp
new file mode 100644
index 0000000..afe4e7f
--- /dev/null
+++ b/apps/uscxml-browser.cpp
@@ -0,0 +1,191 @@
+#include "uscxml/config.h"
+#include "uscxml/Interpreter.h"
+#include <glog/logging.h>
+
+#ifdef HAS_SIGNAL_H
+#include <signal.h>
+#endif
+
+#ifdef HAS_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+#ifdef HAS_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#ifdef _WIN32
+#include "XGetopt.h"
+#endif
+
+class VerboseMonitor : public uscxml::InterpreterMonitor {
+	void onStableConfiguration(uscxml::Interpreter interpreter) {
+		printConfig(interpreter.getConfiguration());
+	}
+
+	void beforeCompletion(uscxml::Interpreter interpreter) {
+		printConfig(interpreter.getConfiguration());
+	}
+
+	void printConfig(const Arabica::XPath::NodeSet<std::string>& config) {
+		std::string seperator;
+		std::cout << "Config: {";
+		for (int i = 0; i < config.size(); i++) {
+			std::cout << seperator << ATTR(config[i], "id");
+			seperator = ", ";
+		}
+		std::cout << "}" << std::endl;
+	}
+};
+
+
+#ifdef HAS_EXECINFO_H
+void printBacktrace(void** array, int size) {
+	char** messages = backtrace_symbols(array, size);
+	for (int i = 0; i < size && messages != NULL; ++i) {
+		std::cerr << "\t" << messages[i] << std::endl;
+	}
+	std::cerr << std::endl;
+	free(messages);
+}
+
+#ifdef HAS_DLFCN_H
+// see https://gist.github.com/nkuln/2020860
+typedef void (*cxa_throw_type)(void *, void *, void (*) (void *));
+cxa_throw_type orig_cxa_throw = 0;
+
+void load_orig_throw_code() {
+	orig_cxa_throw = (cxa_throw_type) dlsym(RTLD_NEXT, "__cxa_throw");
+}
+
+extern "C"
+void __cxa_throw (void *thrown_exception, void *pvtinfo, void (*dest)(void *)) {
+	std::cerr << __FUNCTION__ << " will throw exception from " << std::endl;
+	if (orig_cxa_throw == 0)
+		load_orig_throw_code();
+
+	void *array[50];
+	size_t size = backtrace(array, 50);
+	printBacktrace(array, size);
+	orig_cxa_throw(thrown_exception, pvtinfo, dest);
+}
+#endif
+#endif
+
+
+// see http://stackoverflow.com/questions/2443135/how-do-i-find-where-an-exception-was-thrown-in-c
+void customTerminate() {
+	static bool tried_throw = false;
+	try {
+		// try once to re-throw currently active exception
+		if (!tried_throw) {
+			throw;
+			tried_throw = true;
+		} else {
+			tried_throw = false;
+		};
+	} catch (const std::exception &e) {
+		std::cerr << __FUNCTION__ << " caught unhandled exception. what(): "
+		          << e.what() << std::endl;
+	} catch (const uscxml::Event &e) {
+		std::cerr << __FUNCTION__ << " caught unhandled exception. Event: "
+		          << e << std::endl;
+	} catch (...) {
+		std::cerr << __FUNCTION__ << " caught unknown/unhandled exception."
+		          << std::endl;
+	}
+
+#ifdef HAS_EXECINFO_H
+	void * array[50];
+	int size = backtrace(array, 50);
+
+	printBacktrace(array, size);
+#endif
+	abort();
+}
+
+void printUsageAndExit() {
+	printf("uscxml-browser version " USCXML_VERSION " (" CMAKE_BUILD_TYPE " build - " CMAKE_COMPILER_STRING ")\n");
+	printf("Usage\n");
+	printf("\tuscxml-browser");
+#ifdef BUILD_AS_PLUGINS
+	printf(" [-d pluginPath]");
+#endif
+	printf(" URL\n");
+	printf("\n");
+	printf("Options\n");
+	printf("\t-v        : be verbose\n");
+	printf("\t-pN       : port for HTTP server\n");
+	printf("\n");
+	exit(1);
+}
+
+int main(int argc, char** argv) {
+	using namespace uscxml;
+
+	std::set_terminate(customTerminate);
+
+#if defined(HAS_SIGNAL_H) && !defined(WIN32)
+	signal(SIGPIPE, SIG_IGN);
+#endif
+
+	if (argc < 2) {
+		printUsageAndExit();
+	}
+
+	bool verbose = false;
+	size_t port = 8080;
+	google::InitGoogleLogging(argv[0]);
+	google::LogToStderr();
+
+#ifndef _WIN32
+	opterr = 0;
+#endif
+	int option;
+	while ((option = getopt(argc, argv, "vl:d:p:")) != -1) {
+		switch(option) {
+		case 'l':
+			google::InitGoogleLogging(optarg);
+			break;
+		case 'd':
+			uscxml::Factory::pluginPath = optarg;
+			break;
+		case 'p':
+			port = strTo<size_t>(optarg);
+			break;
+		case 'v':
+			verbose = true;
+			break;
+		case '?':
+			break;
+		default:
+			printUsageAndExit();
+			break;
+		}
+	}
+
+//  for (int i = 0; i < argc; i++)
+//    std::cout << argv[i] << std::endl;
+//  std::cout << optind << std::endl;
+
+	// intialize http server on given port
+	HTTPServer::getInstance(port);
+	
+	LOG(INFO) << "Processing " << argv[optind];
+	Interpreter interpreter = Interpreter::fromURI(argv[optind]);
+	if (interpreter) {
+		interpreter.setCmdLineOptions(argc, argv);
+//		interpreter->setCapabilities(Interpreter::CAN_NOTHING);
+//		interpreter->setCapabilities(Interpreter::CAN_BASIC_HTTP | Interpreter::CAN_GENERIC_HTTP);
+
+		if (verbose) {
+			VerboseMonitor* vm = new VerboseMonitor();
+			interpreter.addMonitor(vm);
+		}
+
+		interpreter.start();
+		while(interpreter.runOnMainThread(25));
+	}
+
+	return EXIT_SUCCESS;
+}
\ No newline at end of file