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/* Starshatter OpenSource Distribution
Copyright (c) 1997-2004, Destroyer Studios LLC.
All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name "Destroyer Studios" nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
SUBSYSTEM: nGenEx.lib
FILE: Archive.h
AUTHOR: John DiCamillo
*/
#ifndef Archive_h
#define Archive_h
// +------------------------------------------------------------------+
#define VERSION 0x0010
#define BLOCK_SIZE 1024
#define FILE_BLOCK 1024
#define NAMELEN 64
// +------------------------------------------------------------------+
struct DataHeader
{
static const char* TYPENAME() { return "DataHeader"; }
DWORD version;
DWORD nfiles;
DWORD dir_blocks;
DWORD dir_size_comp;
DWORD dir_offset;
};
struct DataEntry
{
static const char* TYPENAME() { return "DataEntry"; }
char name[NAMELEN];
DWORD size_orig;
DWORD size_comp;
DWORD offset;
};
class DataArchive
{
public:
static const char* TYPENAME() { return "DataArchive"; }
// ctor:
DataArchive(const char* name = 0);
~DataArchive();
// operations:
void LoadDatafile(const char* name);
void Insert(const char* name);
void Extract(const char* name);
void Remove(const char* name);
void List();
void WriteEntry(int index, BYTE* buf);
int FindEntry(const char* req_name);
int ExpandEntry(int index, BYTE*& buf, bool null_terminate=false);
BYTE* CompressEntry(int index);
int InsertEntry(const char* name);
void RemoveEntry(int index);
DWORD Blocks(DWORD raw_size);
DWORD DirBlocks();
DWORD FileBlocks(int index);
int FindDataBlocks(int blocks_needed);
void CreateBlockMap();
DWORD NumFiles() { return header.nfiles; }
DataEntry* GetFile(int i) { if (i>=0 && i<(int)header.nfiles) return &directory[i]; return 0; }
const char* Name() const { return datafile; }
private:
// persistent data members:
DataHeader header;
DataEntry* directory;
BYTE* dirbuf;
// transient members:
char datafile[NAMELEN];
DWORD* block_map;
DWORD nblocks;
};
#endif // Archive_h
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