Moved Stars45 to StarsEx

1 files changed, 89 insertions, 0 deletions

diff --git a/StarsEx/Archive.h b/StarsEx/Archive.h
new file mode 100644
index 0000000..ac22f28
--- /dev/null
+++ b/StarsEx/Archive.h
@@ -0,0 +1,89 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+    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