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engines/ultima/nuvie/files/nuvie_io_file.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 NUVIE_FILES_NUVIE_IO_FILE_H
+#define NUVIE_FILES_NUVIE_IO_FILE_H
+
+#include "ultima/shared/std/string.h"
+#include "ultima/nuvie/files/nuvie_io.h"
+#include "common/file.h"
+#include "common/memstream.h"
+#include "common/savefile.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+class NuvieIOFile : public NuvieIO {
+public:
+	NuvieIOFile() {}
+	~NuvieIOFile() override {}
+
+	virtual bool open(const Common::Path &filename) {
+		return false;
+	};
+};
+
+class NuvieIOFileRead : public NuvieIOFile {
+private:
+	Common::SeekableReadStream *_file;
+	Common::File _srcFile;
+public:
+	NuvieIOFileRead() : NuvieIOFile(), _file(nullptr) {}
+	~NuvieIOFileRead() override;
+
+	bool open(const Common::Path &filename) override;
+	virtual bool open(Common::InSaveFile *saveFile);
+	void close() override;
+	void seek(uint32 new_pos) override;
+
+	uint8 read1() override;
+	uint16 read2() override;
+	uint32 read4() override;
+
+	bool readToBuf(unsigned char *buf, uint32 buf_size) override;
+
+	bool isOpen() const {
+		return _file != nullptr;
+	}
+};
+
+/**
+ * File writing class. This can be done in one of two ways.
+ * If it's a simple filename, then it uses the savefile interface to
+ * write it as uncompresed to the save folder. However, if it has
+ * relative paths, such as used by the code to dump out all tiles or maps,
+ * it uses a Common::DumpFile instead
+ */
+class NuvieIOFileWrite : public NuvieIOFile {
+private:
+	Common::SeekableWriteStream *_file;
+	Common::DumpFile _dumpFile;
+	Common::OutSaveFile *_saveFile;
+	Common::MemoryWriteStreamDynamic _saveFileData;
+	Common::String _description;
+	bool _isAutosave;
+protected:
+	bool isOpen() const {
+		return _file != nullptr;
+	}
+public:
+	NuvieIOFileWrite();
+	~NuvieIOFileWrite() override;
+	bool open(const Common::Path &filename) override;
+	bool open(const Common::String &filename, bool isAutosave);
+	void close() override;
+	void seek(uint32 new_pos) override;
+
+	bool write1(uint8 src) override;
+	bool write2(uint16 src) override;
+	bool write4(uint32 src) override;
+	void writeDesc(const Common::String &desc) {
+		_description = desc;
+	}
+
+	uint32 writeBuf(const unsigned char *src, uint32 src_size) override;
+	uint32 write(NuvieIO *src) override;
+};
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif