Implemented global DOM document cache

* the plan to return XML-nodes from each external function requires a better way to manage the lifetime of many xerces DOM document instances and their support class instances
** this is why DomDocumentCache and DomDocumentCache::item were implemented
** based on std::map so we can easily access the result of old function calls
* changed external read-directory function to return the children of the document node instead of the document node itself
** removes unnecessary cruft in function calls
** will make returning status codes alongside the function result more pleasing to the eye
* updated test transformation to reflect new features

1 files changed, 1 insertions, 13 deletions

diff --git a/src/support/filesystem_context.cc b/src/support/filesystem_context.cc
index baeccf3..9ed9bbf 100644
--- a/src/support/filesystem_context.cc
+++ b/src/support/filesystem_context.cc
@@ -1,18 +1,6 @@
 #include "filesystem_context.h"
 
-namespace {
-
-inline std::string xalanToString(const xalan::XalanDOMString& text) {
-	xalan::CharVectorType castHelper;
-	text.transcode(castHelper);
-
-	return std::string(
-		castHelper.begin(),
-		castHelper.end() - 1
-	);
-}
-
-}
+#include "support/utility.h"
 
 namespace InputXSLT {