Implemented ResultNodeFacade as a DOM node construction helper

* wraps result node construction and appends it to root node on destruction
* offers a simpler interface for common node construction patterns
* simplifies result node construction in all external function implementations
** most noticeable in FunctionReadDirectory
* expanded FunctionReadDirectory result nodes by name, extension, and full-path nodes

2 files changed, 96 insertions, 0 deletions

diff --git a/src/support/dom/result_node_facade.cc b/src/support/dom/result_node_facade.cc
new file mode 100644
index 0000000..597448b
--- /dev/null
+++ b/src/support/dom/result_node_facade.cc
@@ -0,0 +1,61 @@
+#include "result_node_facade.h"
+
+#include <xercesc/dom/DOMText.hpp>
+
+#include "support/xerces_string_guard.h"
+
+namespace InputXSLT {
+
+ResultNodeFacade::ResultNodeFacade(
+	xercesc::DOMDocument* document,
+	xercesc::DOMNode* node,
+	const std::string& name
+):
+	dom_document_(document),
+	result_node_(
+		dom_document_->createElement(*XercesStringGuard<XMLCh>(name))
+	),
+	root_node_(node) { }
+
+ResultNodeFacade::~ResultNodeFacade() {
+	this->root_node_->appendChild(this->result_node_);
+}
+
+void ResultNodeFacade::setAttribute(
+	const std::string& name,
+	const std::string& value
+) {
+	this->result_node_->setAttribute(
+		*XercesStringGuard<XMLCh>(name),
+		*XercesStringGuard<XMLCh>(value)
+	);
+}
+
+void ResultNodeFacade::setValueNode(
+	const std::string& name,
+	const std::string& value
+) {
+	xercesc::DOMElement* const nameNode(
+		this->dom_document_->createElement(*XercesStringGuard<XMLCh>(name))
+	);
+
+	xercesc::DOMText* const valueNode(
+		this->dom_document_->createTextNode(*XercesStringGuard<XMLCh>(value))
+	);
+
+	nameNode->appendChild(valueNode);
+
+	this->result_node_->appendChild(nameNode);
+}
+
+void ResultNodeFacade::setContent(const std::string& content) {
+	this->result_node_->appendChild(
+		this->dom_document_->createTextNode(*XercesStringGuard<XMLCh>(content))
+	);
+}
+
+void ResultNodeFacade::setContent(xercesc::DOMNode* node) {
+	this->result_node_->appendChild(node);
+}
+
+}
diff --git a/src/support/dom/result_node_facade.h b/src/support/dom/result_node_facade.h
new file mode 100644
index 0000000..ccdd850
--- /dev/null
+++ b/src/support/dom/result_node_facade.h
@@ -0,0 +1,35 @@
+#ifndef INPUTXSLT_SRC_SUPPORT_RESULT_NODE_FACADE_H_
+#define INPUTXSLT_SRC_SUPPORT_RESULT_NODE_FACADE_H_
+
+#include <xercesc/dom/DOMDocument.hpp>
+#include <xercesc/dom/DOMImplementation.hpp>
+#include <xercesc/dom/DOMElement.hpp>
+
+#include <string>
+
+namespace InputXSLT {
+
+class ResultNodeFacade {
+	public:
+		ResultNodeFacade(
+			xercesc::DOMDocument*,
+			xercesc::DOMNode*,
+			const std::string&
+		);
+		~ResultNodeFacade();
+
+		void setAttribute(const std::string&, const std::string&);
+		void setValueNode(const std::string&, const std::string&);
+		void setContent(const std::string&);
+		void setContent(xercesc::DOMNode*);
+
+	private:
+		xercesc::DOMDocument* const dom_document_;
+		xercesc::DOMElement*  const result_node_;
+		xercesc::DOMNode*     const root_node_;
+
+};
+
+}
+
+#endif  // INPUTXSLT_SRC_SUPPORT_RESULT_NODE_FACADE_H_