diff options
Diffstat (limited to 'Datafile/Archive.h')
| -rw-r--r-- | Datafile/Archive.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/Datafile/Archive.h b/Datafile/Archive.h new file mode 100644 index 0000000..f3ec099 --- /dev/null +++ b/Datafile/Archive.h @@ -0,0 +1,83 @@ +/* Project nGen
+ John DiCamillo Software Consulting
+ Copyright © 1997. All Rights Reserved.
+
+ SUBSYSTEM: DataFile.exe
+ FILE: Archive.hpp
+ AUTHOR: John DiCamillo
+
+*/
+
+#ifndef ARCHIVE_HPP
+#define ARCHIVE_HPP
+
+// +------------------------------------------------------------------+
+
+#define VERSION 0x0010
+#define BLOCK_SIZE 1024
+#define MAX_FILES 4096
+#define FILE_BLOCK 1024
+#define NAMELEN 64
+
+// +------------------------------------------------------------------+
+
+struct DataHeader
+{
+ DWORD version;
+ DWORD nfiles;
+ DWORD dir_blocks;
+ DWORD dir_size_comp;
+ DWORD dir_offset;
+};
+
+struct DataEntry
+{
+ char name[NAMELEN];
+ DWORD size_orig;
+ DWORD size_comp;
+ DWORD offset;
+};
+
+class DataArchive
+{
+public:
+ // 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);
+ 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; }
+
+private:
+ // persistent data members:
+ DataHeader header;
+ DataEntry directory[MAX_FILES];
+ BYTE* dirbuf;
+
+ // transient members:
+ char datafile[NAMELEN];
+
+ DWORD* block_map;
+ DWORD nblocks;
+};
+
+#endif
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