From 34b2f97ac57489d7c9555a3cb0c92c808a4948ea Mon Sep 17 00:00:00 2001
From: Adrian Kummerländer
Date: Tue, 22 Apr 2014 22:49:56 +0200
Subject: 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

---
 dummy/transform.xsl            |  8 +++++---
 src/function/read_directory.cc | 24 +++++++++++++++++-------
 src/function/read_directory.h  |  4 ++++
 src/transformer_facade.cc      |  8 ++------
 4 files changed, 28 insertions(+), 16 deletions(-)

diff --git a/dummy/transform.xsl b/dummy/transform.xsl
index c0437a0..6dc45dc 100644
--- a/dummy/transform.xsl
+++ b/dummy/transform.xsl
@@ -23,9 +23,11 @@
 			<li><xsl:value-of select="."/></li>
 		</xsl:for-each>
 		</ul>
-		<div id="filelist">
-			<xsl:value-of select="external:read-directory('.')" />
-		</div>
+		<ul id="filelist">
+		<xsl:for-each select="external:read-directory('.')/content/file">
+			<li><xsl:value-of select="."/></li>
+		</xsl:for-each>
+		</ul>
 	</body>
 </html>
 </xsl:template>
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;
 
diff --git a/src/transformer_facade.cc b/src/transformer_facade.cc
index 055b1f3..01314cd 100644
--- a/src/transformer_facade.cc
+++ b/src/transformer_facade.cc
@@ -1,12 +1,9 @@
 #include "transformer_facade.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 <xalanc/XalanTransformer/XercesDOMWrapperParsedSource.hpp>
 
 #include <xercesc/dom/DOMDocument.hpp>
 #include <xercesc/dom/DOMImplementation.hpp>
@@ -59,8 +56,7 @@ int TransformerFacade::execute(
 	xalan::XercesDOMWrapperParsedSource parsedInput(
 		inputDom,
 		this->parser_,
-		domSupport,
-		xalan::XalanDOMString("")
+		domSupport
 	);
 
 	xalan::XSLTInputSource transform(transformation.data());
-- 
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