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engines/ultima/nuvie/files/nuvie_io.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_H
+#define NUVIE_FILES_NUVIE_IO_H
+
+#include "common/stream.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+class Configuration;
+
+class NuvieIO {
+protected:
+	uint32 size;
+	uint32 pos;
+public:
+	NuvieIO();
+	virtual ~NuvieIO();
+
+	virtual void close() {
+		size = 0;
+		pos = 0;
+	};
+
+	virtual uint8 read1() {
+		return 0;
+	};
+	virtual uint16 read2() {
+		return 0;
+	};
+	virtual uint32 read4() {
+		return 0;
+	};
+
+	unsigned char *readAll();
+	unsigned char *readBuf(uint32 read_size, uint32 *bytes_read);
+	virtual bool readToBuf(unsigned char *buf, uint32 buf_size) {
+		return false;
+	};
+
+
+	virtual bool write1(uint8 src) {
+		return false;
+	};
+	virtual bool write2(uint16 src) {
+		return false;
+	};
+	virtual bool write4(uint32 src) {
+		return false;
+	};
+	virtual uint32 writeBuf(const unsigned char *src, uint32 src_size) {
+		return 0;
+	};
+	virtual uint32 write(NuvieIO *src) {
+		return 0;
+	};
+
+	uint32 get_size() const {
+		return size;
+	};
+
+
+	inline void seekStart() {
+		seek(0);
+	};
+	inline void seekEnd() {
+		seek(size);
+	};
+	virtual void seek(uint32 new_pos) = 0;
+
+	inline bool is_end() const {
+		return (pos == size - 1);
+	};
+	inline bool is_eof() const {
+		return (size == 0 || pos >= size);
+	};
+	uint32 position() const {
+		return pos;
+	};
+};
+
+#define NUVIE_BUF_COPY   true
+#define NUVIE_BUF_NOCOPY false
+
+
+class NuvieIOBuffer: public NuvieIO {
+protected:
+
+	unsigned char *data;
+	bool copied_data;
+
+public:
+	NuvieIOBuffer();
+	~NuvieIOBuffer() override;
+
+	bool open(unsigned char *buf, uint32 buf_size, bool copy_buf = NUVIE_BUF_COPY);
+
+	void close() override;
+
+	unsigned char *get_raw_data() {
+		return data;
+	}; //hehe evil
+
+	uint8 read1() override;
+	uint16 read2() override;
+	uint32 read4() override;
+	bool readToBuf(unsigned char *buf, uint32 buf_size) override;
+
+	bool write1(uint8 src) override;
+	bool write2(uint16 src) override;
+	bool write4(uint32 src) override;
+	uint32 writeBuf(const unsigned char *src, uint32 src_size) override;
+	uint32 write(NuvieIO *src) override;
+
+	void seek(uint32 new_pos) override;
+};
+
+extern char *strgets(char *str, int n, Common::ReadStream *stream);
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif