4.44 beta

CPP/7zip/Archive/GZip/GZipHeader.h

@@ -0,0 +1,85 @@
+// Archive/GZip/Header.h
+
+#ifndef __ARCHIVE_GZIP_HEADER_H
+#define __ARCHIVE_GZIP_HEADER_H
+
+#include "Common/Types.h"
+
+namespace NArchive {
+namespace NGZip {
+
+extern UInt16 kSignature;
+static const UInt32 kSignatureSize = 2;
+
+namespace NFileHeader
+{
+  /*
+  struct CBlock
+  {
+    UInt16 Id;
+    Byte CompressionMethod;
+    Byte Flags;
+    UInt32 Time;
+    Byte ExtraFlags;
+    Byte HostOS;
+  };
+  */
+  
+  namespace NFlags 
+  {
+    const int kDataIsText = 1 << 0;
+    const int kHeaderCRCIsPresent = 1 << 1;
+    const int kExtraIsPresent = 1 << 2;
+    const int kNameIsPresent = 1 << 3;
+    const int kComentIsPresent = 1 << 4;
+  }
+  
+  namespace NExtraFlags 
+  {
+    enum EEnum
+    {
+      kMaximum = 2,
+      kFastest = 4
+    };
+  }
+  
+  namespace NCompressionMethod
+  {
+    const Byte kDeflate = 8;
+  }
+
+  namespace NHostOS
+  {
+    enum EEnum
+    {
+      kFAT      = 0,  // filesystem used by MS-DOS, OS/2, Win32 
+        // pkzip 2.50 (FAT / VFAT / FAT32 file systems)
+        kAMIGA    = 1,
+        kVMS      = 2,  // VAX/VMS
+        kUnix     = 3,
+        kVM_CMS   = 4,
+        kAtari    = 5,  // what if it's a minix filesystem? [cjh]
+        kHPFS     = 6,  // filesystem used by OS/2 (and NT 3.x)
+        kMac      = 7,
+        kZ_System = 8,
+        kCPM      = 9,
+        kTOPS20   = 10, // pkzip 2.50 NTFS 
+        kNTFS     = 11, // filesystem used by Windows NT 
+        kQDOS     = 12, // SMS/QDOS
+        kAcorn    = 13, // Archimedes Acorn RISC OS
+        kVFAT     = 14, // filesystem used by Windows 95, NT
+        kMVS      = 15,
+        kBeOS     = 16, // hybrid POSIX/database filesystem
+                        // BeBOX or PowerMac 
+        kTandem   = 17,
+        kTHEOS    = 18,
+
+        kUnknown = 255
+    };
+    const int kNumHostSystems = 19;
+  }
+}
+
+}}
+
+#endif