Implemented basic external directory traversal function

* _read-directory_ lists all files in a given directory
** currently text-only output, xml planned
* improved FilesystemContext path resolution (relative path is fully resolved by boost::filesystem)

2 files changed, 47 insertions, 8 deletions

diff --git a/src/support/filesystem_context.cc b/src/support/filesystem_context.cc
index d3f9614..d0813c2 100644
--- a/src/support/filesystem_context.cc
+++ b/src/support/filesystem_context.cc
@@ -1,24 +1,57 @@
 #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
+	);
+}
+
+}
+
 namespace InputXSLT {
 
 FilesystemContext::FilesystemContext(const std::string& path):
-	path_(path) { }
+	path_(canonical(boost::filesystem::path(path))) { }
 
 boost::filesystem::path FilesystemContext::resolve(
 	const std::string& path) const {
-	return boost::filesystem::path(this->path_ / path);
+	return canonical(this->path_ / path);
 }
 
 boost::filesystem::path FilesystemContext::resolve(
 	const xalan::XalanDOMString& path) const {
-	xalan::CharVectorType castHelper;
-	path.transcode(castHelper);
+	return this->resolve(xalanToString(path));
+}
 
-	return this->resolve(std::string(
-		castHelper.begin(),
-		castHelper.end()
-	));
+void FilesystemContext::iterate(
+	const std::string& path,
+	std::function<void(const boost::filesystem::path&)> func
+) const {
+	const boost::filesystem::path directory(this->resolve(path));
+
+	if ( boost::filesystem::exists(directory) &&
+	     boost::filesystem::is_directory(directory) ) {
+		for ( boost::filesystem::directory_iterator iter(directory);
+		      iter != boost::filesystem::directory_iterator();
+		      ++iter ) {
+			if ( boost::filesystem::is_regular_file(iter->status()) ) {
+				func(*iter);
+			}
+		}
+	}
+}
+
+void FilesystemContext::iterate(
+	const xalan::XalanDOMString& path,
+	std::function<void(const boost::filesystem::path&)> func
+) const {
+	this->iterate(xalanToString(path), func);
 }
 
 }
diff --git a/src/support/filesystem_context.h b/src/support/filesystem_context.h
index d5836f1..cb3edd4 100644
--- a/src/support/filesystem_context.h
+++ b/src/support/filesystem_context.h
@@ -6,6 +6,7 @@
 #include "boost/filesystem.hpp"
 
 #include <string>
+#include <functional>
 
 #include "common.h"
 
@@ -18,6 +19,11 @@ class FilesystemContext {
 		boost::filesystem::path resolve(const std::string&) const;
 		boost::filesystem::path resolve(const xalan::XalanDOMString&) const;
 
+		void iterate(const std::string&,
+		             std::function<void(const boost::filesystem::path&)>) const;
+		void iterate(const xalan::XalanDOMString&,
+		             std::function<void(const boost::filesystem::path&)>) const;
+
 	private:
 		const boost::filesystem::path path_;