Initial commit

engines/ags/engine/util/library.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_ENGINE_UTIL_LIBRARY_H
+#define AGS_ENGINE_UTIL_LIBRARY_H
+
+#include "ags/shared/core/platform.h"
+#include "ags/shared/util/string.h"
+
+namespace AGS3 {
+namespace AGS {
+namespace Engine {
+
+using AGS::Shared::String;
+
+class BaseLibrary {
+public:
+	BaseLibrary() {}
+
+	virtual ~BaseLibrary() {}
+
+	// Get library name; returns empty string if not loaded
+	inline String GetName() const { return _name; }
+	// Get actual filename; returns empty string if not loaded
+	inline String GetFileName() const { return _filename; }
+	// Get path used to load the library; or empty string is not loaded.
+	// NOTE: this is NOT a fully qualified path, but a lookup path.
+	inline String GetPath() const { return _path; }
+
+	// Returns expected filename form for the dynamic library of a given name
+	virtual String GetFilenameForLib(const String &libname) = 0;
+
+	// Try load a library of a given name
+	virtual bool Load(const String &libname) = 0;
+	// Unload a library; does nothing if was not loaded
+	virtual void Unload() = 0;
+	// Tells if library is loaded
+	virtual bool IsLoaded() const = 0;
+
+protected:
+	String _name;
+	String _filename;
+	String _path;
+};
+
+} // namespace Engine
+} // namespace AGS
+} // namespace AGS3
+
+#endif

engines/ags/engine/util/library_scummvm.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_ENGINE_UTIL_LIBRARY_SCUMMVM_H
+#define AGS_ENGINE_UTIL_LIBRARY_SCUMMVM_H
+
+#include "ags/shared/core/platform.h"
+#include "ags/shared/util/string.h"
+#include "ags/shared/debugging/out.h"
+#include "ags/plugins/plugin_base.h"
+#include "ags/engine/util/library.h"
+
+namespace AGS3 {
+namespace AGS {
+namespace Engine {
+
+class ScummVMLibrary : public BaseLibrary {
+private:
+	Plugins::PluginBase *_library = nullptr;
+
+public:
+	ScummVMLibrary() : BaseLibrary() {}
+
+	~ScummVMLibrary() override {
+		Unload();
+	};
+
+	AGS::Shared::String GetFilenameForLib(const AGS::Shared::String &libraryName) override {
+		return AGS::Shared::String::FromFormat("%s.dll", libraryName.GetCStr());
+	}
+
+	bool Load(const AGS::Shared::String &libraryName) override {
+		Unload();
+
+		_library = Plugins::pluginOpen(libraryName.GetCStr());
+		const char *error = Plugins::pluginError();
+		if (error)
+			AGS::Shared::Debug::Printf("pluginOpen returned: %s", error);
+
+		if (_library == nullptr)
+			return false;
+		_name = libraryName;
+		_filename = GetFilenameForLib(libraryName);
+		_path = "./";
+		return true;
+	}
+
+	void Unload() override {
+		if (_library) {
+			Plugins::pluginClose(_library);
+			_library = nullptr;
+			_name = "";
+			_filename = "";
+			_path = "";
+		}
+	}
+
+	bool IsLoaded() const override {
+		return _library != nullptr;
+	}
+
+	Plugins::PluginBase *getPlugin() const {
+		return _library;
+	}
+};
+
+
+typedef ScummVMLibrary Library;
+
+} // namespace Engine
+} // namespace AGS
+} // namespace AGS3
+
+#endif