X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fcore%2Fapplication.cpp;h=8447eed669d2b8f58c9b078b547b1543b0bab27f;hp=badc52304ab4df6dc8c563aa9708109e5c387959;hb=HEAD;hpb=5ad225535ae12d53fd79c8f9fa764bd586211b8f

diff --git a/source/core/application.cpp b/source/core/application.cpp
index badc523..c214a06 100644
--- a/source/core/application.cpp
+++ b/source/core/application.cpp
@@ -1,116 +1,138 @@
-/* $Id$
-
-This file is part of libmspcore
-Copyright © 2006-2008, 2011  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <signal.h>
-#include <iostream>
+#include <cstring>
 #include <typeinfo>
-#include "../debug/backtrace.h"
-#include "../debug/demangle.h"
-#include "../time/units.h"
-#include "../time/utils.h"
+#include <signal.h>
+#include <msp/debug/demangle.h>
+#include <msp/debug/errorreporter.h>
+#include <msp/fs/dir.h>
+#include <msp/fs/path.h>
+#include <msp/fs/utils.h>
+#include <msp/io/print.h>
+#include <msp/strings/utils.h>
 #include "application.h"
 #include "except.h"
+#include "getopt.h"
 
 using namespace std;
 
 namespace Msp {
 
-Application::Application():
-	exit_code(0)
-{ }
+Application *Application::_app = nullptr;
+Application::Starter *Application::_starter = nullptr;
+const char *Application::_argv0 = nullptr;
+string Application::_name;
+void *Application::_data = nullptr;
 
-/**
-Constructs an instance of the registered application class and runs it.  If the
-application throws a UsageError, the static usage() function is called.
-
-This function can only be called once.  The global main() function provided by
-the library normally does it automatically at program startup.
-*/
-int Application::run(int argc, char **argv, void *data)
+Application::Application(const string &n)
 {
-	static bool called=false;
-	if(called)
-	{
-		cerr<<"Trying to call Application::run_app twice!\n";
-		return 125;
-	}
-	called=true;
+	if(_app)
+		throw already_called("Application::Application");
+
+	if(!n.empty())
+		_name = n;
+	else
+		_name = FS::basename(_argv0);
+}
 
-	if(!starter_)
+int Application::run(int argc, char **argv, void *data, void (*created_callback)(void *))
+{
+	if(!_starter)
 	{
-		cerr<<"Trying to run with no RegisteredApplication class!\n";
+		IO::cerr.write("Application::run called with no RegisteredApplication class!\n");
 		return 126;
 	}
 
-	data_=data;
+	set_startup_info(argv[0], data);
 
 	try
 	{
 		try
 		{
-			app_=starter_->create_app(argc, argv);
+			_app = _starter->create_app(argc, argv);
 		}
-		catch(const UsageError &e)
+		catch(const usage_error &e)
 		{
-			starter_->usage(e.what(), argv[0], e.get_brief());
+			IO::print(IO::cerr, "%s\n%s\n", e.what(), e.help());
 			return 1;
 		}
 
-		int result=app_->main();
-		Application *a=app_;
-		app_=0;
+		if(created_callback)
+			created_callback(data);
+
+		int result = _app->main();
+		Application *a = _app;
+		_app = nullptr;
 		delete a;
 		return result;
 	}
 	catch(const exception &e)
 	{
-		delete app_;
-
-#ifdef WIN32
-		string msg=Debug::demangle(typeid(e).name())+":\n"+e.what();
-		MessageBoxA(0, msg.c_str(), "Uncaught exception", MB_OK|MB_ICONERROR);
-#else
-		cerr<<"An uncaught exception occurred.\n";
-		cerr<<"  type:   "<<Debug::demangle(typeid(e).name())<<'\n';
-		cerr<<"  what(): "<<e.what()<<'\n';
+		bool handled = false;
+		if(const Debug::ErrorReporter *er = Debug::ErrorReporter::get_current())
+			handled = er->report_uncaught_exception(e);
 
-		const Exception *exc=dynamic_cast<const Exception *>(&e);
-		if(exc && !exc->get_backtrace().get_frames().empty())
+		if(!handled)
 		{
-			cerr<<"  backtrace:\n";
-			const list<Debug::Backtrace::StackFrame> &frames=exc->get_backtrace().get_frames();
-			for(list<Debug::Backtrace::StackFrame>::const_iterator i=frames.begin(); i!=frames.end(); ++i)
-				cerr<<"    "<<*i<<'\n';
+			IO::print(IO::cerr, "An uncaught exception occurred.\n");
+			IO::print(IO::cerr, "  type:   %s\n", Debug::demangle(typeid(e).name()));
+			vector<string> lines = split(e.what(), '\n');
+			if(lines.size()<2)
+				IO::print(IO::cerr, "  what(): %s\n", e.what());
+			else
+			{
+				IO::print(IO::cerr, "  what(): %s\n", lines.front());
+				for(auto i=lines.begin(); ++i!=lines.end(); )
+					IO::print(IO::cerr, "          %s\n", *i);
+			}
 		}
-#endif
+
+		delete _app;
+		_app = nullptr;
 
 		return 124;
 	}
 }
 
-/**
-Prints a message describing the usage of the application.  The default version
-will blame the programmer for being lazy.
+void Application::set_startup_info(const char *argv0, void *data)
+{
+	if(_argv0)
+		throw already_called("Application::set_startup_info");
+
+	static FS::Path exe;
+
+	if(!argv0 || !*argv0)
+	{
+#ifdef _WIN32
+		argv0 = "application.exe";
+#else
+		argv0 = "./application";
+#endif
+	}
+
+	bool has_slash = strchr(argv0, FS::DIRSEP);
+	if(!has_slash)
+		exe = FS::path_lookup(argv0);
+	if(exe.empty())
+		exe = FS::realpath(argv0);
+
+	_argv0 = exe.c_str();
+	_data = data;
+}
+
+void *Application::get_data()
+{
+	return _data;
+}
+
+const char *Application::get_argv0()
+{
+	return _argv0;
+}
 
-@param   reason  Why the function was called
-@param   argv0   The value of argv[0], to be used in the message
-@param   brief   Whether to print a brief or long usage message
-*/
-void Application::usage(const char *reason, const char *, bool)
+const std::string &Application::get_name()
 {
-	if(reason)
-		cerr<<"UsageError: "<<reason<<'\n';
-	cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n";
+	return _name;
 }
 
-/**
-Default main loop.  Calls tick() repeatedly until exit() is called.  A custom
-main loop should monitor the done member variable and return exit_code.
-*/
 int Application::main()
 {
 	done = false;
@@ -120,42 +142,29 @@ int Application::main()
 	return exit_code;
 }
 
-/**
-Sets the specified signal to be delivered to the sighandler member function.
-*/
 void Application::catch_signal(int s)
 {
-	signal(s, &sighandler_);
+	signal(s, &_sighandler);
 }
 
-/**
-Causes the application to exit gracefully with the given exit code.
-*/
 void Application::exit(int c)
 {
 	done = true;
 	exit_code = c;
 }
 
-/**
-Static wrapper function to call a member function of the Application instance.
-*/
-void Application::sighandler_(int s)
+void Application::_sighandler(int s)
 {
-	app_->sighandler(s);
+	_app->sighandler(s);
 }
 
 
 Application::Starter::Starter()
 {
-	if(starter_)
-		throw InvalidState("Can't create more than one Starter instance");
+	if(_starter)
+		throw already_called("Application::Starter::Starter");
 
-	starter_=this;
+	_starter = this;
 }
 
-Application *Application::app_=0;
-Application::RegBase *Application::reg_app_=0;
-void *Application::data_=0;
-
 } // namespace Msp