Setting the correct work directory in FunctionExternalCommand

* changed the XObjectValue constructor to accept a pointer to FilesystemContext instead of instantiating the context by itself
* the FilesystemContext is now instantiated in the "callConstructDocument" member method of "FunctionBase"
** a const reference to FilesystemContext is passed to all "constructDocument" member method implementations
* the FilesystemContext is currently only used by FunctionExternal command to set the correct work directory in "boost::process::context"
** this is required so calling external commands from inside a stylesheet works as expected
*** i.e. from inside the directory the stylesheet is located in
* modified all remaining external function implementations accordingly

1 files changed, 5 insertions, 3 deletions

diff --git a/src/function/base.h b/src/function/base.h
index 3726aa8..d53ae8a 100644
--- a/src/function/base.h
+++ b/src/function/base.h
@@ -120,15 +120,17 @@ class FunctionBase : public xalan::Function {
 			const xalan::Locator*       locator,
 			Sequence<Index...>
 		) const {
-			XObjectValue valueGetter(
+			const FilesystemContext context(
 				IncludeEntityResolver::getPathFromSystemId(
 					locator->getSystemId()
-				),
-				this->include_resolver_
+				)
 			);
 
+			XObjectValue valueGetter(&context, this->include_resolver_);
+
 			return this->document_cache_->create(
 				static_cast<const Implementation*>(this)->constructDocument(
+					context,
 					valueGetter.get<typename std::tuple_element<
 						Index,
 						std::tuple<Types...>