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engines/ultima/nuvie/files/u6_lib_n.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_U6LIB_N_H
+#define NUVIE_FILES_U6LIB_N_H
+
+#include "ultima/shared/std/containers.h"
+#include "ultima/shared/std/string.h"
+#include "common/stream.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+using Std::string;
+//using Std::vector;
+
+class NuvieIO;
+
+struct U6LibItem {
+	uint32 offset;
+	uint8 flag;
+	uint32 uncomp_size;
+	uint32 size;
+	string *name;
+	unsigned char *data; // for writing or cache
+};
+
+class U6Lib_n {
+	uint32 filesize; // total size of file
+	uint8 game_type; // there are three types of lib files.
+	uint8 lib_size; // measured in bytes either 2 or 4
+	uint32 num_offsets; // number of items, size of lists
+	U6LibItem *items;
+	NuvieIO *data;
+	bool del_data;
+
+public:
+	U6Lib_n();
+	~U6Lib_n();
+
+	bool open(const Common::Path &filename, uint8 size, uint8 type = NUVIE_GAME_U6);
+	bool open(NuvieIO *new_data, uint8 size, uint8 type = NUVIE_GAME_U6);
+	void close();
+	bool create(const Common::Path &filename, uint8 size, uint8 type = NUVIE_GAME_U6);
+	uint8 get_game_type() {
+		return game_type;
+	}
+
+	unsigned char *get_item(uint32 item_number, unsigned char *buf = nullptr); // read
+	void set_item_data(uint32 item_number, unsigned char *src, uint32 src_len);
+
+	uint32 get_num_items();
+	uint32 get_item_size(uint32 item_number);
+	uint32 get_item_offset(uint32 item_number);
+	const char *get_item_name(uint32 item_number);
+	bool is_compressed(uint32 item_number);
+
+	void add_item(uint32 offset32, const char *name = nullptr);
+	void write_item(uint32 item_number);
+	void write_items();
+
+	void load_index(Common::ReadStream *index_f);
+	void write_index();
+	void write_header();
+
+	void calc_item_offsets();
+
+protected:
+	void parse_lib();
+	void calculate_item_sizes();
+	uint32 calculate_item_uncomp_size(U6LibItem *item);
+	uint32 calculate_num_offsets(bool skip4);
+};
+
+#if 0
+class U6ConverseLib: U6Lib_n {
+private:
+	uint32 zero_offset_count;
+	string *conversefile;
+};
+#endif
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+
+#endif