From e33e19d0587146859d48a134ec9fd94e7b7ba5cd Mon Sep 17 00:00:00 2001
From: "FWoltermann@gmail.com"
 <FWoltermann@gmail.com@076cb2c4-205e-83fd-5cf3-1be9aa105544>
Date: Thu, 8 Dec 2011 14:53:40 +0000
Subject: Initial upload

---
 Datafile/Archive.h | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 Datafile/Archive.h

(limited to 'Datafile/Archive.h')

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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