o Trying to structure how apps are made.

1 files changed, 44 insertions, 0 deletions

diff --git a/apps/apps.cpp b/apps/apps.cpp
index 21c4fe6..2da8359 100644
--- a/apps/apps.cpp
+++ b/apps/apps.cpp
@@ -6,6 +6,7 @@ namespace trygvis {
 namespace apps {
 
 using namespace log4cplus;
+using namespace std;
 namespace po = boost::program_options;
 
 const po::options_description logging_options() {
@@ -19,5 +20,48 @@ void setup_logging(po::variables_map vm) {
     config.configure();
 }
 
+int launch_app(int argc, char *argv[], app& app) {
+    po::options_description desc("Options");
+
+    auto x = desc.add_options();
+    app.add_options(x);
+
+    desc.add(logging_options());
+
+    po::variables_map vm;
+    auto parsed = po::parse_command_line(argc, argv, desc);
+    po::store(parsed, vm);
+
+    app_execution execution(desc, vm);
+
+    try {
+        po::notify(vm);
+    } catch (boost::program_options::required_option &e) {
+        cerr << "Missing required option: " << e.get_option_name() << endl;
+        execution.usage();
+        return EXIT_FAILURE;
+    }
+
+    auto unrecognized = po::collect_unrecognized(parsed.options, po::include_positional);
+
+    if (vm.count("help")) {
+        cerr << desc << "\n";
+        return EXIT_FAILURE;
+    }
+
+    if (unrecognized.size()) {
+        cerr << "Unrecognized option: " << unrecognized.at(0) << "\n";
+        return EXIT_FAILURE;
+    }
+
+    setup_logging(vm);
+
+    return app.main(execution);
+}
+
+void app_execution::usage() {
+    cerr << desc << endl;
+}
+
 }
 }