Implemented transformation execution function

* InputXSLT::PlattformGuard handles xerces and xalan construction and lifetime
* InputXSLT::TransformerGuard instantiates PlattformGuard, configurates external functions
** offers execute method for "executing" a XSL tranformation with empty input

6 files changed, 127 insertions, 40 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa6310b..26ff8d1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,7 @@ add_executable(
 	test
 	test.cc
 	src/utility.cc
+	src/transformer_guard.cc
 	src/function/read_file.cc
 	src/function/read_xml_file.cc
 )
diff --git a/src/plattform_guard.h b/src/plattform_guard.h
new file mode 100644
index 0000000..9e99fdc
--- /dev/null
+++ b/src/plattform_guard.h
@@ -0,0 +1,24 @@
+#ifndef INPUTXSLT_SRC_PLATTFORM_GUARD_H_
+#define INPUTXSLT_SRC_PLATTFORM_GUARD_H_
+
+#include <xalanc/Include/PlatformDefinitions.hpp>
+#include <xercesc/util/PlatformUtils.hpp>
+
+namespace xalan = xalanc_1_11;
+
+namespace InputXSLT {
+
+struct PlattformGuard {
+	PlattformGuard() {
+		xercesc::XMLPlatformUtils::Initialize();
+		xalan::XalanTransformer::initialize();
+	}
+
+	~PlattformGuard() {
+		xalan::XalanTransformer::terminate();
+	}
+};
+
+}
+
+#endif  // INPUTXSLT_SRC_PLATTFORM_GUARD_H_
diff --git a/src/transformer_guard.cc b/src/transformer_guard.cc
new file mode 100644
index 0000000..73bcea2
--- /dev/null
+++ b/src/transformer_guard.cc
@@ -0,0 +1,67 @@
+#include "transformer_guard.h"
+
+#include <xalanc/Include/PlatformDefinitions.hpp>
+#include <xercesc/util/PlatformUtils.hpp>
+
+#include <xalanc/XSLT/XSLTInputSource.hpp>
+#include <xalanc/XalanTransformer/XalanTransformer.hpp>
+#include <xalanc/XalanTransformer/XercesDOMWrapperParsedSource.hpp>
+#include <xalanc/XercesParserLiaison/XercesDOMSupport.hpp>
+
+#include <xercesc/dom/DOMDocument.hpp>
+#include <xercesc/dom/DOMImplementation.hpp>
+
+#include "function/read_file.h"
+#include "function/read_xml_file.h"
+
+namespace InputXSLT {
+
+TransformerGuard::TransformerGuard():
+	plattform_(),
+	parser_(),
+	transformer_() {
+	const xalan::XalanDOMString customNamespace(
+		"http://ExternalFunction.xalan-c++.xml.apache.org"
+	);
+
+	this->transformer_.installExternalFunction(
+		customNamespace,
+		xalan::XalanDOMString("read-file"),
+		InputXSLT::FunctionReadFile()
+	);
+
+	this->transformer_.installExternalFunction(
+		customNamespace,
+		xalan::XalanDOMString("read-xml-file"),
+		InputXSLT::FunctionReadXmlFile()
+	);
+
+}
+
+int TransformerGuard::execute(
+	const std::string& transformation,
+	const std::string& target
+) {
+	xercesc::DOMDocument* inputDom(
+		xercesc::DOMImplementation::getImplementation()->createDocument()
+	);
+	xalan::XercesDOMSupport domSupport(this->parser_);
+
+	xalan::XercesDOMWrapperParsedSource parsedInput(
+		inputDom,
+		this->parser_,
+		domSupport,
+		xalan::XalanDOMString("")
+	);
+
+	xalan::XSLTInputSource transform(transformation.data());
+	xalan::XSLTResultTarget output(target.data());
+
+	return this->transformer_.transform(
+		parsedInput,
+		transform,
+		output
+	);
+}
+
+}
diff --git a/src/transformer_guard.h b/src/transformer_guard.h
new file mode 100644
index 0000000..381fb94
--- /dev/null
+++ b/src/transformer_guard.h
@@ -0,0 +1,29 @@
+#ifndef INPUTXSLT_SRC_TRANSFORMER_GUARD_H_
+#define INPUTXSLT_SRC_TRANSFORMER_GUARD_H_
+
+#include <string>
+
+#include <xalanc/XalanTransformer/XalanTransformer.hpp>
+#include <xalanc/XercesParserLiaison/XercesParserLiaison.hpp>
+
+#include "plattform_guard.h"
+
+namespace InputXSLT {
+
+class TransformerGuard {
+	public:
+		TransformerGuard();
+
+		int execute(const std::string&, const std::string&);
+
+	private:
+		const PlattformGuard plattform_;
+		mutable xalan::XercesParserLiaison parser_;
+
+		xalan::XalanTransformer transformer_;
+
+};
+
+}
+
+#endif  // INPUTXSLT_SRC_TRANSFORMER_GUARD_H_
diff --git a/src/utility.h b/src/utility.h
index b841373..ee39a25 100644
--- a/src/utility.h
+++ b/src/utility.h
@@ -3,7 +3,7 @@
 
 #include <string>
 
-namespace xalanc_1_11 { };
+namespace xalanc_1_11 { }
 namespace xalan = xalanc_1_11;
 
 namespace InputXSLT {
diff --git a/test.cc b/test.cc
index cfcf632..09325f7 100644
--- a/test.cc
+++ b/test.cc
@@ -1,44 +1,10 @@
-#include <xalanc/Include/PlatformDefinitions.hpp>
-#include <xercesc/util/PlatformUtils.hpp>
-#include <xalanc/XalanTransformer/XalanTransformer.hpp>
-#include <xalanc/XSLT/XSLTInputSource.hpp>
-
-#include "function/read_file.h"
-#include "function/read_xml_file.h"
+#include "transformer_guard.h"
 
 int main() {
-	xercesc::XMLPlatformUtils::Initialize();
-	xalan::XalanTransformer::initialize();
-
-	const xalan::XalanDOMString customNamespace(
-		"http://ExternalFunction.xalan-c++.xml.apache.org"
-	);
-
-	xalan::XalanTransformer transformer;
-
-	transformer.installExternalFunction(
-		customNamespace,
-		xalan::XalanDOMString("read-file"),
-		InputXSLT::FunctionReadFile()
-	);
+	InputXSLT::TransformerGuard guard;
 
-	transformer.installExternalFunction(
-		customNamespace,
-		xalan::XalanDOMString("read-xml-file"),
-		InputXSLT::FunctionReadXmlFile()
+	return guard.execute(
+		"../dummy/transform.xsl",
+		"out.xml"
 	);
-
-	xalan::XSLTInputSource  input("../dummy/in.xml");
-	xalan::XSLTInputSource  tranformation("../dummy/transform.xsl");
-	xalan::XSLTResultTarget output("out.xml");
-
-	int result(transformer.transform(
-		input,
-		tranformation,
-		output
-	));
-
-	xalan::XalanTransformer::terminate();
-
-	return result;
 }