X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fcore%2Fapplication.cpp;h=aedaa4b6f25c027429f8bff1a5c069078206e7df;hp=f64f350e83e362b1d0cde831a7f0f542e52388b2;hb=d2795b92b02253a36cb7406fbaeabdef6d7caa19;hpb=cfc8e0b7b15ea505bd6a6a9599cbc5ce1e316963

diff --git a/source/core/application.cpp b/source/core/application.cpp
index f64f350..aedaa4b 100644
--- a/source/core/application.cpp
+++ b/source/core/application.cpp
@@ -1,212 +1,146 @@
-/* $Id$
-
-This file is part of libmspcore
-Copyright © 2006 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 "application.h"
-#include "except.h"
+#include "getopt.h"
 
 using namespace std;
 
 namespace Msp {
 
-Application::Application():
-	exit_code(0),
-	loop_mode_(TICK_SLEEP)
-{ }
-
-/**
-Constructs an instance of the registered application class and runs it.  If the
-application throws a UsageError, the static usage() function is called.
+Application *Application::app_ = 0;
+Application::Starter *Application::starter_ = 0;
+const char *Application::argv0_ = 0;
+string Application::name_;
+void *Application::data_ = 0;
 
-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):
+	exit_code(0)
 {
-	static bool called=false;
-	if(called)
-	{
-		cerr<<"Trying to call Application::run_app twice!\n";
-		return 125;
-	}
-	called=true;
+	if(app_)
+		throw logic_error("instance already exists");
+
+	if(!n.empty())
+		name_ = n;
+	else
+		name_ = FS::basename(argv0_);
+}
 
-	if(!reg_app_)
+int Application::run(int argc, char **argv, void *data, void (*created_callback)(void *))
+{
+	if(!starter_)
 	{
-		cerr<<"Trying to run with no application class registered!\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_=reg_app_->create_app(argc, argv);
+			app_ = starter_->create_app(argc, argv);
 		}
-		catch(const UsageError &e)
+		catch(const usage_error &e)
 		{
-			reg_app_->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();
-		delete app_;
+		if(created_callback)
+			created_callback(data);
+
+		int result = app_->main();
+		Application *a = app_;
+		app_ = 0;
+		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()));
+			IO::print(IO::cerr, "  what(): %s\n", e.what());
 		}
-#endif
+
+		delete app_;
+		app_ = 0;
 
 		return 124;
 	}
 }
 
-/**
-Prints a message describing the usage of the application.  The default version
-will blame the programmer for being lazy.
-
-@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)
+void Application::set_startup_info(const char *argv0, void *data)
 {
-	if(reason)
-		cerr<<"UsageError: "<<reason<<'\n';
-	cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n";
-}
+	if(argv0_)
+		throw logic_error("startup info already set");
 
-/**
-Default main loop.  Behavior depends on loop_mode_.  A custom main loop should
-monitor the done member variable and return exit_code.
-*/
-int Application::main()
-{
-	if(loop_mode_==NONE)
-		return 0;
+	static FS::Path exe;
 
-	done=false;
-	while(!done)
+	if(!argv0 || !*argv0)
 	{
-		if(loop_mode_==SLEEP)
-		{
-			sleep_sem_.wait();
-			if(!done)
-				tick();
-		}
-		else if(loop_mode_==TICK_SLEEP)
-		{
-			tick();
-			Time::sleep(Time::msec);
-		}
-		else if(loop_mode_==TICK_YIELD)
-		{
-			tick();
-#ifdef WIN32
-			Sleep(0);
+#ifdef _WIN32
+		argv0 = "application.exe";
 #else
-			sched_yield();
+		argv0 = "./application";
 #endif
-		}
-		else if(loop_mode_==TICK_BUSY)
-			tick();
 	}
 
-	return exit_code;
-}
+	bool has_slash = strchr(argv0, FS::DIRSEP);
+	if(!has_slash)
+		exe = FS::path_lookup(argv0);
+	if(exe.empty())
+		exe = FS::realpath(argv0);
 
-/**
-Sets the specified signal to be delivered to the sighandler member function.
-*/
-void Application::catch_signal(int s)
-{
-	signal(s, &sighandler_);
+	argv0_ = exe.c_str();
+	data_ = data;
 }
 
-/**
-Changes the main loop mode.
-*/
-void Application::set_loop_mode(LoopMode l)
+int Application::main()
 {
-	LoopMode old_mode=loop_mode_;
-	loop_mode_=l;
-	if(old_mode==SLEEP)
-		sleep_sem_.signal();
+	done = false;
+	while(!done)
+		tick();
+
+	return exit_code;
 }
 
-/**
-Causes the tick() function to be executed once if loop mode is SLEEP.  Has no
-effect with other loop modes.
-*/
-void Application::induce_tick()
+void Application::catch_signal(int s)
 {
-	if(loop_mode_==SLEEP)
-		sleep_sem_.signal();
+	signal(s, &sighandler_);
 }
 
-/**
-Causes the application to exit gracefully with the given exit code.
-*/
 void Application::exit(int c)
 {
-	done=true;
-	exit_code=c;
-	if(loop_mode_==SLEEP)
-		sleep_sem_.signal();
+	done = true;
+	exit_code = c;
 }
 
-/**
-Static wrapper function to call a member function of the Application instance.
-*/
 void Application::sighandler_(int s)
 {
 	app_->sighandler(s);
 }
 
 
-Application::RegBase::RegBase()
+Application::Starter::Starter()
 {
-	if(reg_app_)
-	{
-		cerr<<"Warning: registering the application twice\n";
-		delete reg_app_;
-	}
+	if(starter_)
+		throw logic_error("Can't create more than one Starter instance");
 
-	reg_app_=this;
+	starter_ = this;
 }
 
-Application *Application::app_=0;
-Application::RegBase *Application::reg_app_=0;
-void *Application::data_=0;
-
 } // namespace Msp