1 files changed, 116 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/compression/compression.cpp b/comm/third_party/botan/src/lib/compression/compression.cpp
new file mode 100644
index 0000000000..361bf7dd3c
--- /dev/null
+++ b/comm/third_party/botan/src/lib/compression/compression.cpp
@@ -0,0 +1,116 @@
+/*
+* Compression Factory
+* (C) 2014,2016 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/compression.h>
+#include <botan/mem_ops.h>
+#include <botan/exceptn.h>
+#include <cstdlib>
+
+#if defined(BOTAN_HAS_ZLIB)
+  #include <botan/zlib.h>
+#endif
+
+#if defined(BOTAN_HAS_BZIP2)
+  #include <botan/bzip2.h>
+#endif
+
+#if defined(BOTAN_HAS_LZMA)
+  #include <botan/lzma.h>
+#endif
+
+namespace Botan {
+
+Compression_Algorithm* make_compressor(const std::string& name)
+   {
+#if defined(BOTAN_HAS_ZLIB)
+   if(name == "Zlib" || name == "zlib")
+      return new Zlib_Compression;
+   if(name == "Gzip" || name == "gzip" || name == "gz")
+      return new Gzip_Compression;
+   if(name == "Deflate" || name == "deflate")
+      return new Deflate_Compression;
+#endif
+
+#if defined(BOTAN_HAS_BZIP2)
+   if(name == "bzip2" || name == "bz2" || name == "Bzip2")
+      return new Bzip2_Compression;
+#endif
+
+#if defined(BOTAN_HAS_LZMA)
+   if(name == "lzma" || name == "xz" || name == "LZMA")
+      return new LZMA_Compression;
+#endif
+
+   BOTAN_UNUSED(name);
+   return nullptr;
+   }
+
+//static
+std::unique_ptr<Compression_Algorithm>
+Compression_Algorithm::create(const std::string& algo)
+   {
+   std::unique_ptr<Compression_Algorithm> compressor(make_compressor(algo));
+   return compressor;
+   }
+
+//static
+std::unique_ptr<Compression_Algorithm>
+Compression_Algorithm::create_or_throw(const std::string& algo)
+   {
+   if(auto compressor = Compression_Algorithm::create(algo))
+      {
+      return compressor;
+      }
+   throw Lookup_Error("Compression", algo, "");
+   }
+
+Decompression_Algorithm* make_decompressor(const std::string& name)
+   {
+#if defined(BOTAN_HAS_ZLIB)
+   if(name == "Zlib" || name == "zlib")
+      return new Zlib_Decompression;
+   if(name == "Gzip" || name == "gzip" || name == "gz")
+      return new Gzip_Decompression;
+   if(name == "Deflate" || name == "deflate")
+      return new Deflate_Decompression;
+#endif
+
+#if defined(BOTAN_HAS_BZIP2)
+   if(name == "bzip2" || name == "bz2" || name == "Bzip2")
+      return new Bzip2_Decompression;
+#endif
+
+#if defined(BOTAN_HAS_LZMA)
+   if(name == "lzma" || name == "xz" || name == "LZMA")
+      return new LZMA_Decompression;
+#endif
+
+   BOTAN_UNUSED(name);
+   return nullptr;
+   }
+
+//static
+std::unique_ptr<Decompression_Algorithm>
+Decompression_Algorithm::create(const std::string& algo)
+   {
+   std::unique_ptr<Decompression_Algorithm> decompressor(make_decompressor(algo));
+   return decompressor;
+   }
+
+//static
+std::unique_ptr<Decompression_Algorithm>
+Decompression_Algorithm::create_or_throw(const std::string& algo)
+   {
+   if(auto decompressor = Decompression_Algorithm::create(algo))
+      {
+      return decompressor;
+      }
+   throw Lookup_Error("Decompression", algo, "");
+   }
+
+}
+