Added basic parameter taking overload of TransformationFacade::generate

* XSLT stylesheets may be provided with a set of initial parameters
** these parameters can be provided as the second argument to the generate member method in the form of a string to string mapping
** the XSLT standard also permitts number and node set types as value arguments of such input parameters but this is not supported by this change
* expanded test transformation to demonstrate this feature

2 files changed, 23 insertions, 0 deletions

diff --git a/src/transformation_facade.cc b/src/transformation_facade.cc
index 846c586..3fee24f 100644
--- a/src/transformation_facade.cc
+++ b/src/transformation_facade.cc
@@ -55,6 +55,7 @@ int TransformationFacade::generate(const std::string& target) {
 	xalan::XSLTInputSource  inputSource(emptyStream);
 	xalan::XSLTResultTarget outputTarget(target.data());
 
+
 	const int resultCode = this->transformer_.transform(
 		inputSource,
 		this->transformation_,
@@ -68,4 +69,22 @@ int TransformationFacade::generate(const std::string& target) {
 	return resultCode;
 }
 
+int TransformationFacade::generate(
+	const std::string& target,
+	const parameter_map& parameters
+) {
+	for ( auto&& parameter : parameters ) {
+		this->transformer_.setStylesheetParam(
+			parameter.first.data(),
+			parameter.second.data()
+		);
+	}
+
+	const int resultCode = this->generate(target);
+
+	this->transformer_.clearStylesheetParams();
+
+	return resultCode;
+}
+
 }
diff --git a/src/transformation_facade.h b/src/transformation_facade.h
index 765a376..880335f 100644
--- a/src/transformation_facade.h
+++ b/src/transformation_facade.h
@@ -4,6 +4,7 @@
 #include <xalanc/XalanTransformer/XalanTransformer.hpp>
 
 #include <string>
+#include <unordered_map>
 
 #include "common.h"
 #include "support/filesystem_context.h"
@@ -12,10 +13,13 @@ namespace InputXSLT {
 
 class TransformationFacade {
 	public:
+		typedef std::unordered_map<std::string, std::string> parameter_map;
+
 		TransformationFacade(const std::string&);
 		~TransformationFacade();
 
 		int generate(const std::string&);
+		int generate(const std::string&, const parameter_map&);
 
 	private:
 		const FilesystemContext fs_context_;