Changed external functions to enable global installation

* up until now all external functions were locally installed to a specific XalanTransformer instance contained within a TransformationGuard instance
** this had to change as I planned to add a "execute-transformation" function based on TransformationGuard which would have led to recursive self-instantiation
** global external functions have to be thread-safe
* as global external function can not be provided with a reference to a transformation-specific FilesystemFacade instance, the working path is now determined using xalan::Locator
** currently using pointer arithmetics on XMLCh* to remove the "file://" prefix of the URI returned by locator->getSystemId(), may be unsafe
* added compilation unit for PlattformGuard as it now contains function installation in addition to plattform lifetime management

1 files changed, 0 insertions, 27 deletions

diff --git a/src/transformation_facade.cc b/src/transformation_facade.cc
index 3fee24f..91d761d 100644
--- a/src/transformation_facade.cc
+++ b/src/transformation_facade.cc
@@ -6,38 +6,11 @@
 #include <sstream>
 #include <iostream>
 
-#include "function/read_file.h"
-#include "function/read_xml_file.h"
-#include "function/read_directory.h"
-
 namespace InputXSLT {
 
 TransformationFacade::TransformationFacade(const std::string& transformation):
-	fs_context_(boost::filesystem::path(transformation).parent_path().string()),
 	transformation_{},
 	transformer_() {
-	const xalan::XalanDOMString customNamespace(
-		"function.inputxslt.application"
-	);
-
-	this->transformer_.installExternalFunction(
-		customNamespace,
-		xalan::XalanDOMString("read-file"),
-		InputXSLT::FunctionReadFile(this->fs_context_)
-	);
-
-	this->transformer_.installExternalFunction(
-		customNamespace,
-		xalan::XalanDOMString("read-xml-file"),
-		InputXSLT::FunctionReadXmlFile(this->fs_context_)
-	);
-
-	this->transformer_.installExternalFunction(
-		customNamespace,
-		xalan::XalanDOMString("read-directory"),
-		InputXSLT::FunctionReadDirectory(this->fs_context_)
-	);
-
 	this->transformer_.compileStylesheet(
 		xalan::XSLTInputSource(transformation.data()),
 		this->transformation_