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//$Id:$ -*- C++ -*-
/*
* DirectReader.h - Reader from independent files
*
* Copyright (c) 2001-2016 Ogapee. All rights reserved.
*
* ogapee@aqua.dti2.ne.jp
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __DIRECT_READER_H__
#define __DIRECT_READER_H__
#include "BaseReader.h"
#include <string.h>
#define MAX_FILE_NAME_LENGTH 256
class DirectReader : public BaseReader {
public:
DirectReader(const char* path = NULL, const unsigned char* key_table = NULL);
~DirectReader();
int open(const char* name = NULL);
int close();
const char* getArchiveName() const;
int getNumFiles();
void registerCompressionType(const char* ext, int type);
struct FileInfo getFileByIndex(unsigned int index);
size_t getFileLength(const char* file_name);
size_t getFile(const char* file_name, unsigned char* buffer, int* location = NULL);
static void convertFromSJISToEUC(char* buf);
static void convertFromSJISToUTF8(char* dst_buf, const char* src_buf);
static void convertFromUTF8ToSJIS(char* dst_buf, const char* src_buf);
protected:
char* file_full_path;
char* file_sub_path;
size_t file_path_len;
char* capital_name;
char* capital_name_tmp;
char* archive_path;
unsigned char key_table[256];
bool key_table_flag;
int getbit_mask;
size_t getbit_len, getbit_count;
unsigned char* read_buf;
unsigned char* decomp_buffer;
size_t decomp_buffer_len;
struct RegisteredCompressionType {
RegisteredCompressionType* next;
char* ext;
int type;
RegisteredCompressionType()
{
ext = NULL;
next = NULL;
};
RegisteredCompressionType(const char* ext, int type)
{
this->ext = new char[strlen(ext) + 1];
for (unsigned int i = 0; i < strlen(ext) + 1; i++) {
this->ext[i] = ext[i];
if (this->ext[i] >= 'a' && this->ext[i] <= 'z')
this->ext[i] += 'A' - 'a';
}
this->type = type;
this->next = NULL;
};
~RegisteredCompressionType()
{
if (ext) delete[] ext;
};
} root_registered_compression_type, *last_registered_compression_type;
FILE* fopen(const char* path, const char* mode);
unsigned char readChar(FILE* fp);
unsigned short readShort(FILE* fp);
unsigned long readLong(FILE* fp);
void writeChar(FILE* fp, unsigned char ch);
void writeShort(FILE* fp, unsigned short ch);
void writeLong(FILE* fp, unsigned long ch);
static unsigned short swapShort(unsigned short ch);
static unsigned long swapLong(unsigned long ch);
size_t decodeNBZ(FILE* fp, size_t offset, unsigned char* buf);
size_t encodeNBZ(FILE* fp, size_t length, unsigned char* buf);
int getbit(FILE* fp, int n);
size_t decodeSPB(FILE* fp, size_t offset, unsigned char* buf);
size_t decodeLZSS(struct ArchiveInfo* ai, int no, unsigned char* buf);
int getRegisteredCompressionType(const char* file_name);
size_t getDecompressedFileLength(int type, FILE* fp, size_t offset);
private:
FILE* getFileHandle(const char* file_name, int& compression_type, size_t* length);
};
#endif // __DIRECT_READER_H__
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