3 This file is part of libmspcore
4 Copyright © 2006 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
9 #include "../time/units.h"
10 #include "../time/utils.h"
11 #include "application.h"
19 Constructs an instance of the registered application class and runs it. If the
20 application throws a UsageError, the static usage() function is called.
22 This function can only be called once. The global main() function provided by
23 the library normally does it automatically at program startup.
25 int Application::run(int argc, char **argv)
27 static bool called=false;
30 cerr<<"Trying to call Application::run_app twice!\n";
37 cerr<<"Trying to run with no application class registered!\n";
43 app_=reg_app_->create_app(argc, argv);
45 catch(const UsageError &e)
47 reg_app_->usage(e.what(), argv[0], e.get_brief());
51 int result=app_->main();
57 Prints a message describing the usage of the application. The default version
58 will blame the programmer for being lazy.
60 @param reason Why the function was called
61 @param argv0 The value of argv[0], to be used in the message
62 @param brief Whether to print a brief or long usage message
64 void Application::usage(const char *reason, const char *, bool)
67 cerr<<"UsageError: "<<reason<<'\n';
68 cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n";
71 Application::Application():
73 loop_mode_(TICK_SLEEP)
77 Default main loop. Behavior depends on loop_mode_. A custom main loop should
78 monitor the done member variable and return exit_code.
80 int Application::main()
94 else if(loop_mode_==TICK_SLEEP)
97 Time::sleep(Time::msec);
99 else if(loop_mode_==TICK_YIELD)
114 Sets the specified signal to be delivered to the sighandler member function.
116 void Application::catch_signal(int s)
118 signal(s, &sighandler_);
122 Changes the main loop mode.
124 void Application::set_loop_mode(LoopMode l)
126 LoopMode old_mode=loop_mode_;
133 Causes the tick() function to be executed once if loop mode is SLEEP. Has no
134 effect with other loop modes.
136 void Application::induce_tick()
138 if(loop_mode_==SLEEP)
143 Causes the application to exit gracefully with the given exit code.
145 void Application::exit(int c)
149 if(loop_mode_==SLEEP)
154 Static wrapper function to call a member function of the Application instance.
156 void Application::sighandler_(int s)
161 Application::RegBase::RegBase()
165 cerr<<"Warning: registering the application twice\n";
172 Application *Application::app_=0;
173 Application::RegBase *Application::reg_app_=0;