add a cmake option to switch between std and boost filesystem

examples/book_server/views.h

@@ -1,8 +1,7 @@
 #ifndef VIEWS_H_
 #define VIEWS_H_
 
-#include "boost/filesystem/path.hpp"
-
+#include "webcc/fs.h"
 #include "webcc/view.h"
 
 // -----------------------------------------------------------------------------
@@ -25,7 +24,7 @@ private:
 // URL: /books/{id}
 class BookDetailView : public webcc::View {
 public:
-  explicit BookDetailView(boost::filesystem::path photo_dir);
+  explicit BookDetailView(webcc::fs::path photo_dir);
 
   webcc::ResponsePtr Handle(webcc::RequestPtr request) override;
 
@@ -40,7 +39,7 @@ private:
   webcc::ResponsePtr Delete(webcc::RequestPtr request);
 
 private:
-  boost::filesystem::path photo_dir_;
+  webcc::fs::path photo_dir_;
 };
 
 // -----------------------------------------------------------------------------
@@ -48,7 +47,7 @@ private:
 // URL: /books/{id}/photo
 class BookPhotoView : public webcc::View {
 public:
-  explicit BookPhotoView(boost::filesystem::path photo_dir);
+  explicit BookPhotoView(webcc::fs::path photo_dir);
 
   webcc::ResponsePtr Handle(webcc::RequestPtr request) override;
 
@@ -68,7 +67,7 @@ private:
   webcc::ResponsePtr Delete(webcc::RequestPtr request);
 
 private:
-  boost::filesystem::path photo_dir_;
+  webcc::fs::path photo_dir_;
 };
 
 #endif  // VIEWS_H_