Add gzip compression transform and compress command line prog.

1 files changed, 36 insertions, 1 deletions

diff --git a/src/lib/compression/zlib/zlib.h b/src/lib/compression/zlib/zlib.h
index 55da47a0d..5805efb57 100644
--- a/src/lib/compression/zlib/zlib.h
+++ b/src/lib/compression/zlib/zlib.h
@@ -46,7 +46,7 @@ class BOTAN_DLL Zlib_Decompression : public Stream_Decompression
       /**
       * @param raw_deflate if true no zlib header/trailer will be used
       */
-      Zlib_Decompression( bool raw_deflate = false) : m_raw_deflate(raw_deflate) {}
+      Zlib_Decompression(bool raw_deflate = false) : m_raw_deflate(raw_deflate) {}
 
       std::string name() const override { return "Zlib_Decompression"; }
 
@@ -56,6 +56,41 @@ class BOTAN_DLL Zlib_Decompression : public Stream_Decompression
       const bool m_raw_deflate;
    };
 
+/**
+* Gzip Compression
+*/
+class BOTAN_DLL Gzip_Compression : public Stream_Compression
+   {
+   public:
+      /**
+      * @param level how much effort to use on compressing (0 to 9);
+      *        higher levels are slower but tend to give better
+      *        compression
+      */
+      Gzip_Compression(size_t level = 6, byte os_code = 255) :
+         m_level(level), m_os_code(os_code) {}
+
+      std::string name() const override { return "Gzip_Compression"; }
+
+   private:
+      Compression_Stream* make_stream() const;
+
+      const size_t m_level;
+      const byte m_os_code;
+   };
+
+/**
+* Gzip Decompression
+*/
+class BOTAN_DLL Gzip_Decompression : public Stream_Compression
+   {
+   public:
+      std::string name() const override { return "Gzip_Decompression"; }
+
+   private:
+      Compression_Stream* make_stream() const;
+   };
+
 }
 
 #endif