eliminate extra call to managed lib

Author: aloneguid

managed/IronCompress/Iron.cs

@@ -43,7 +43,7 @@ static bool SupportsManaged(Codec c) {
         }
 
         static bool SupportsNative(Codec c) {
-            return IsNativeLibraryAvailable && Native.is_supported((int)c);
+            return IsNativeLibraryAvailable && c != Codec.Gzip;
         }
 
         /// <summary>
@@ -87,7 +87,15 @@ public IronCompressResult Decompress(
            Codec codec,
            ReadOnlySpan<byte> input,
            int? outputLength = null) {
-            
+
+            if(ForcePlatform != null) {
+                if(ForcePlatform == Platform.Native) {
+                    return NativeCompressOrDecompress(false, codec, input, CompressionLevel.NoCompression, outputLength);
+                } else if(ForcePlatform == Platform.Managed) {
+                    return ManagedCompressOrDecompress(false, codec, input, CompressionLevel.NoCompression, outputLength);
+                }
+            }
+
             if(SupportsNative(codec))
                 return NativeCompressOrDecompress(false, codec, input, CompressionLevel.NoCompression, outputLength);
 

native/api.cpp

@@ -245,13 +245,4 @@ bool compress(bool compress, int32_t codec, char* input_buffer, int32_t input_bu
     }
 }
 
-bool is_supported(int32_t codec) {
-    return codec == 1 ||
-        codec == 2 ||
-        // not 3
-        codec == 4 ||
-        codec == 5 ||
-        codec == 6;
-}
-
 bool ping() { return true; }

native/api.h

@@ -34,13 +34,6 @@ extern "C"
       int32_t* output_buffer_size,
       int32_t compression_level);
 
-   /**
-    * @brief Checks if particular codec is supported
-    * @param codec 
-    * @return true if supported, false otherwise
-   */
-   EXPORTED bool is_supported(int32_t codec);
-
    /**
     * @brief Used to just ping the library to test it's available at all
    */