Function loadPlugin

src/plugin.cpp:129–211

If path is blank, loads Core */

/** If path is blank, loads Core */
static Plugin* loadPlugin(std::string path) {
	if (path == "")
		INFO("Loading Core plugin");
	else
		INFO("Loading plugin from %s", path.c_str());

	Plugin* plugin = new Plugin;

	try {
		if (path == "")
			plugin->version = APP_VERSION;

		// Set plugin path
		plugin->path = (path == "") ? asset::systemDir : path;

		// Get modified timestamp
		if (path != "") {
			struct stat statbuf;
			if (!stat(path.c_str(), &statbuf)) {
#if defined ARCH_MAC
				plugin->modifiedTimestamp = (double) statbuf.st_mtimespec.tv_sec + statbuf.st_mtimespec.tv_nsec * 1e-9;
#elif defined ARCH_WIN
				plugin->modifiedTimestamp = (double) statbuf.st_mtime;
#elif defined ARCH_LIN
				plugin->modifiedTimestamp = (double) statbuf.st_mtim.tv_sec + statbuf.st_mtim.tv_nsec * 1e-9;
#endif
			}
		}

		// Load plugin.json
		std::string manifestFilename = (path == "") ? asset::system("Core.json") : system::join(path, "plugin.json");
		FILE* file = std::fopen(manifestFilename.c_str(), "r");
		if (!file)
			throw Exception("Manifest file %s does not exist", manifestFilename.c_str());
		DEFER({std::fclose(file);});

		json_error_t error;
		json_t* rootJ = json_loadf(file, 0, &error);
		if (!rootJ)
			throw Exception("JSON parsing error at %s %d:%d %s", manifestFilename.c_str(), error.line, error.column, error.text);
		DEFER({json_decref(rootJ);});

		// Load manifest
		plugin->fromJson(rootJ);

		// Reject plugin if slug already exists
		Plugin* existingPlugin = getPlugin(plugin->slug);
		if (existingPlugin)
			throw Exception("Plugin %s is already loaded, not attempting to load it again", plugin->slug.c_str());

		// Call init callback
		InitCallback initCallback;
		if (path == "") {
			initCallback = core::init;
		}
		else {
			initCallback = loadPluginCallback(plugin);
		}