Implemented basic XML output of external read-directory function

* output is generated from XML hand-generated in a std::stringstream
** while this works reasonably well it is not how it should by done, i.e. this will have to be reimplemented using xerces / xalan constructs
** => this is intended to try out how a read-directory could work in a XSLT context

2 files changed, 21 insertions, 7 deletions

diff --git a/src/function/read_directory.cc b/src/function/read_directory.cc
index 7b73526..213ef68 100644
--- a/src/function/read_directory.cc
+++ b/src/function/read_directory.cc
@@ -1,11 +1,16 @@
 #include "read_directory.h"
 
-#include <iostream>
+#include <sstream>
 
 namespace InputXSLT {
 
 FunctionReadDirectory::FunctionReadDirectory(const FilesystemContext& context):
-	fs_context_(context) { }
+	fs_context_(context),
+	parser_() { }
+
+FunctionReadDirectory::FunctionReadDirectory(const FunctionReadDirectory& src):
+	fs_context_(src.fs_context_),
+	parser_() { }
 
 xalan::XObjectPtr FunctionReadDirectory::execute(
 	xalan::XPathExecutionContext&                executionContext,
@@ -21,16 +26,21 @@ xalan::XObjectPtr FunctionReadDirectory::execute(
 		this->generalError(executionContext, context, locator);
 	}
 
-	std::string files;
+	std::stringstream stream;
+	stream << "<content>";
 
 	this->fs_context_.iterate(
 		arguments[0]->str(),
-		[&files](const boost::filesystem::path& p) {
-		files += p.string() + "\n";
+		[&stream](const boost::filesystem::path& p) {
+		stream << "<file>" << p.filename().string() << "</file>";
 	});
 
-	return executionContext.getXObjectFactory().createString(
-		xalan::XalanDOMString(files.data())
+	stream << "</content>";
+
+	return executionContext.getXObjectFactory().createNodeSet(
+		this->parser_.parseXMLStream(
+			xalan::XSLTInputSource(stream)
+		)
 	);
 }
 
diff --git a/src/function/read_directory.h b/src/function/read_directory.h
index 4a865f2..e7ee0c4 100644
--- a/src/function/read_directory.h
+++ b/src/function/read_directory.h
@@ -6,6 +6,8 @@
 #include <xalanc/XPath/Function.hpp>
 #include <xalanc/XPath/XObject.hpp>
 
+#include <xalanc/XercesParserLiaison/XercesParserLiaison.hpp>
+
 #include <string>
 
 #include "common.h"
@@ -16,6 +18,7 @@ namespace InputXSLT {
 class FunctionReadDirectory : public xalan::Function {
 	public:
 		FunctionReadDirectory(const FilesystemContext&);
+		FunctionReadDirectory(const FunctionReadDirectory&);
 
 		virtual xalan::XObjectPtr execute(
 			xalan::XPathExecutionContext&,
@@ -31,6 +34,7 @@ class FunctionReadDirectory : public xalan::Function {
 
 	private:
 		const FilesystemContext& fs_context_;
+		mutable xalan::XercesParserLiaison parser_;
 
 		const xalan::XalanDOMString& getError(xalan::XalanDOMString&) const;