[NancyFx] provide option to override package context (#6593)

* Retrofit2: Return ResponseBody if response if file.

Until now
--------------------
If a swagger endpoint returned a file (e.g. an image), then the Retrofit2
template has choosen the return type java.io.File. However, retrofit cannot
deal with this and throws a com.google.gson.stream.MalformedJsonException.

New:
-------------------
If a swagger endpoint returns a file, then the corresponding Retrofit2 endpoint
will return a okhttp3.ResponseBody which can be used to retrieve the file.

* Add the option packageContext for nancyFx which allows a better adjustment of the namespace.

* run nancyfx-petstore-server.bat

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NancyFXServerCodegen.java

@@ -45,6 +45,7 @@ public class NancyFXServerCodegen extends AbstractCSharpCodegen {
     private static final String MODEL_NAMESPACE = "Models";
     private static final String IMMUTABLE_OPTION = "immutable";
     private static final String USE_BASE_PATH = "writeModulePath";
+    private static final String PACKAGE_CONTEXT = "packageContext";
 
     private static final Map<String, Predicate<Property>> propertyToSwaggerTypeMapping =
             createPropertyToSwaggerTypeMapping();
@@ -76,6 +77,7 @@ public NancyFXServerCodegen() {
         addOption(SOURCE_FOLDER, SOURCE_FOLDER_DESC, sourceFolder);
         addOption(INTERFACE_PREFIX, INTERFACE_PREFIX_DESC, interfacePrefix);
         addOption(OPTIONAL_PROJECT_GUID,OPTIONAL_PROJECT_GUID_DESC, null);
+        addOption(PACKAGE_CONTEXT, "Optionally overrides the PackageContext which determines the namespace (namespace=packageName.packageContext). If not set, packageContext will default to basePath.", null);
 
         // CLI Switches
         addSwitch(SORT_PARAMS_BY_REQUIRED_FLAG, SORT_PARAMS_BY_REQUIRED_FLAG_DESC, sortParamsByRequiredFlag);
@@ -335,7 +337,8 @@ public String toModelName(final String name) {
 
     @Override
     public void preprocessSwagger(final Swagger swagger) {
-        additionalProperties.put("packageContext", sanitizeName(swagger.getBasePath()));
+        final String packageContextOption = (String) additionalProperties.get(PACKAGE_CONTEXT);
+        additionalProperties.put("packageContext", packageContextOption == null ? sanitizeName(swagger.getBasePath()) : packageContextOption);
         final Object basePathOption = additionalProperties.get(USE_BASE_PATH);
         additionalProperties.put("baseContext", basePathOption == null ? swagger.getBasePath() : "/");
     }

samples/server/petstore/nancyfx/IO.Swagger.sln

@@ -2,18 +2,18 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2012
 VisualStudioVersion = 12.0.0.0
 MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IO.Swagger", "src\IO.Swagger\IO.Swagger.csproj", "{768B8DC6-54EE-4D40-9B20-7857E1D742A4}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IO.Swagger", "src\IO.Swagger\IO.Swagger.csproj", "{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}"
 EndProject
 Global
 GlobalSection(SolutionConfigurationPlatforms) = preSolution
 Debug|Any CPU = Debug|Any CPU
 Release|Any CPU = Release|Any CPU
 EndGlobalSection
 GlobalSection(ProjectConfigurationPlatforms) = postSolution
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.Build.0 = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.ActiveCfg = Release|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.Build.0 = Release|Any CPU
+{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}.Release|Any CPU.Build.0 = Release|Any CPU
 {19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 {19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.Build.0 = Debug|Any CPU
 {19F1DEBC-DE5E-4517-8062-F000CD499087}.Release|Any CPU.ActiveCfg = Release|Any CPU

samples/server/petstore/nancyfx/src/IO.Swagger/IO.Swagger.csproj

@@ -3,7 +3,7 @@
     <PropertyGroup>
         <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
         <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-        <ProjectGuid>{768B8DC6-54EE-4D40-9B20-7857E1D742A4}</ProjectGuid>
+        <ProjectGuid>{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}</ProjectGuid>
         <OutputType>Library</OutputType>
         <AppDesignerFolder>Properties</AppDesignerFolder>
         <RootNamespace>IO.Swagger.v2</RootNamespace>