Initial commit

Torque/SDK/engine/core/zipHeaders.h

@@ -0,0 +1,200 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#ifndef _ZIPHEADERS_H_
+#define _ZIPHEADERS_H_
+
+//Includes
+#ifndef _PLATFORM_H_
+#include "platform/platform.h"
+#endif
+
+//-------------------------------------- NB: Structures in this header are BYTE
+//                                        aligned!
+
+#ifdef TORQUE_COMPILER_VISUALC
+#  pragma pack(push,1)
+#else
+#ifdef TORQUE_COMPILER_CODEWARRIOR
+#  pragma options align=packed
+#endif
+#endif
+
+
+class Stream;
+
+//-------------------------------------- Structure designed to fit exactly 256 bytes.
+class ZipLocalFileHeader
+{
+   // NB: Extra field in the header is ignored, but the stream read seeks
+   //      past it...
+   //
+  private:
+   static const U32 csm_localFileHeaderSig;
+
+  public:
+   enum {
+      MaxFileNameLength = 211
+   };
+   enum CompressionMethod {
+     Stored            = 0,
+     Shrunk            = 1,
+     ReducedL1         = 2,
+     ReducedL2         = 3,
+     ReducedL3         = 4,
+     ReducedL4         = 5,
+     Imploded          = 6,
+     ReservedTokenized = 7,
+     Deflated          = 8,
+     EnhDefalted       = 9,
+     DateCompression   = 10
+   };
+
+   struct LocalFileHeader {
+      U32 headerSig;
+      U16 versionToDecompress;
+      U16 bitFlags;
+      U16 compressionMethod;
+      U16 lastModTime;
+      U16 lastModDate;
+      U32 crc32;
+      U32 compressedSize;
+      U32 uncompressedSize;
+
+      U16 fileNameLength;
+      U16 extraFieldLength;
+#ifndef TORQUE_COMPILER_GCC
+   };
+#else
+   } __attribute__ ((packed));
+#endif
+
+   LocalFileHeader m_header;         // Fixed size header
+   char            m_pFileName[226]; // Variable size: FileName.  Note that the
+                                     //  number of chars here is more than the
+                                     //  max allowed filename for alignment
+                                     //  purposes
+
+   // Stream read routines
+  public:
+   bool readFromStream(Stream& io_rStream);
+#ifndef TORQUE_COMPILER_GCC
+};
+#else
+} __attribute__ ((packed));
+#endif
+
+
+//-------------------------------------- Also designed to fit into 256 bytes, note
+//                                        that we ignore the extra and file comment
+//                                        fields.
+class ZipDirFileHeader
+{
+  private:
+   static const U32 csm_dirFileHeaderSig;
+
+  public:
+   enum {
+      MaxFileNameLength = 211
+   };
+   enum CompressionMethod {
+     Stored            = 0,
+     Shrunk            = 1,
+     ReducedL1         = 2,
+     ReducedL2         = 3,
+     ReducedL3         = 4,
+     ReducedL4         = 5,
+     Imploded          = 6,
+     ReservedTokenized = 7,
+     Deflated          = 8,
+     EnhDefalted       = 9,
+     DateCompression   = 10
+   };
+
+   struct DirFileHeader {
+      U32   headerSig;
+      U16   versionMadeBy;
+      U16   versionToDecompress;
+      U16   bitFlags;
+      U16   compressionMethod;
+      U16   lastModTime;
+      U16   lastModDate;
+      U32   crc32;
+      U32   compressedSize;
+      U32   uncompressedSize;
+      U16   fileNameLength;
+      U16   extraFieldLength;
+      U16   fileCommentLength;
+      U16   diskNumberStart;
+      U16   internalFileAttributes;
+      U32   externalFileAttributes;
+      U32   relativeOffsetOfLocalHeader;
+#ifndef TORQUE_COMPILER_GCC
+   };
+#else
+   } __attribute__ ((packed));
+#endif
+
+   DirFileHeader  m_header;
+   char           m_pFileName[212];
+
+   // Stream read routines
+  public:
+   bool readFromStream(Stream& io_rStream);
+#ifndef TORQUE_COMPILER_GCC
+};
+#else
+} __attribute__ ((packed));
+#endif
+
+
+//-------------------------------------- Padded to 32 bytes.  Note that we completely
+//                                        ignore any zip file comments.
+class ZipEOCDRecord
+{
+  private:
+   static const U32 csm_eocdRecordSig;
+
+  public:
+   enum {
+      ProperRecordSize = 22
+   };
+
+   struct EOCDRecord {
+      U32   eocdSig;
+      U16   diskNumber;
+      U16   eocdDiskNumber;
+      U16   numCDEntriesDisk;
+      U16   numCDEntriesTotal;
+      U32   cdSize;
+      U32   cdOffset;
+      U16   zipFileCommentLength;
+#ifndef TORQUE_COMPILER_GCC
+   };
+#else
+   } __attribute__ ((packed));
+#endif
+
+   EOCDRecord m_record;
+   char       __padding[10];
+   // Stream read routines
+  public:
+   bool readFromStream(Stream& io_rStream);
+#ifndef TORQUE_COMPILER_GCC
+};
+#else
+} __attribute__ ((packed));
+#endif
+
+
+#ifdef TORQUE_COMPILER_VISUALC
+#  pragma pack(pop)
+#else
+#ifdef TORQUE_COMPILER_CODEWARRIOR
+#  pragma options align=reset
+#endif
+#endif
+
+#endif //_NZIPHEADERS_H_