From c56840f03cf139d60c6d90b55cf16e70f6ae2bc2 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 21 Jun 2015 00:15:04 +0200
Subject: o Going all header file based and single-executable to launch all
 apps. o Ading CMake magic to generate the launcher

---
 apps/launcher.cpp | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 apps/launcher.cpp

(limited to 'apps/launcher.cpp')

diff --git a/apps/launcher.cpp b/apps/launcher.cpp
new file mode 100644
index 0000000..dc31abd
--- /dev/null
+++ b/apps/launcher.cpp
@@ -0,0 +1,94 @@
+#include "apps.h"
+#include "apps-list.gen.h"
+#include <log4cplus/consoleappender.h>
+#include <log4cplus/configurator.h>
+#include <boost/algorithm/string/predicate.hpp>
+
+using namespace trygvis::apps;
+using namespace std;
+
+const po::options_description logging_options() {
+    po::options_description desc;
+
+    return desc;
+}
+
+void setup_logging(po::variables_map vm) {
+    Appender *console = new ConsoleAppender(true, true);
+    PatternLayout *layout = new PatternLayout(LOG4CPLUS_TEXT("%-5p" /*" %6r"*/ " %-20c %m%n"));
+    console->setLayout(auto_ptr<Layout>(layout));
+
+    Hierarchy &h = Logger::getDefaultHierarchy();
+    h.getRoot().addAppender(SharedAppenderPtr(console));
+}
+
+template<typename App>
+int launch_app(int argc, const char *argv[]) {
+    App app;
+
+    po::options_description all("Options");
+
+    auto all_options = all.add_options();
+    app.add_options(all_options);
+
+    all.add(logging_options());
+    app.add_extra_options(all);
+
+    po::variables_map vm;
+
+    try {
+        auto parsed = po::parse_command_line(argc, argv, all);
+        po::store(parsed, vm);
+
+        po::notify(vm);
+
+        auto unrecognized = po::collect_unrecognized(parsed.options, po::include_positional);
+
+        if (vm.count("help")) {
+            cerr << all << "\n";
+            return EXIT_FAILURE;
+        }
+
+        if (unrecognized.size()) {
+            cerr << "Unrecognized option: " << unrecognized.at(0) << "\n";
+            return EXIT_FAILURE;
+        }
+
+        setup_logging(vm);
+
+        Logger logger = Logger::getInstance(LOG4CPLUS_TEXT(app.app_name));
+
+        app_execution execution(all, vm, logger);
+
+        return app.main(execution);
+    } catch (po::required_option &e) {
+        cerr << "Missing required option: " << e.get_option_name() << endl;
+        cerr << all << endl;
+        return EXIT_FAILURE;
+    } catch (po::unknown_option &e) {
+        cerr << e.what() << endl;
+        return EXIT_FAILURE;
+    }
+}
+
+int main(int argc, const char *argv[]) {
+    if (argc == 0) {
+        return EXIT_FAILURE;
+    }
+
+    string app_name;
+    if (boost::ends_with(argv[0], "launcher")) {
+        if (argc <= 1) {
+            cerr << "Missing required argument: app" << endl;
+            return EXIT_FAILURE;
+        }
+
+        app_name = argv[1];
+        --argc;
+        argv = &argv[1];
+    } else {
+        app_name = argv[0];
+    }
+
+    return launch(app_name, argc, argv);
+}
-- 
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