Replace boost::filesystem with std::experimental::filesystem

This eliminates all Boost library dependencies

CMakeLists.txt

@@ -2,13 +2,10 @@ cmake_minimum_required(VERSION 3.2)
 
 project(Oersted)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++14")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++17")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O0 --coverage")
 #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
 
-find_package(Boost REQUIRED COMPONENTS system filesystem)
-include_directories(${Boost_INCLUDE_DIR})
-
 include_directories(./lib/)
 include_directories(./lib/Eigen/)
 include_directories(./lib/GoogleTest/googletest/include/gtest)

src/Mesh/src/Mesh.cpp

@@ -2,7 +2,6 @@
 
 Mesh::Mesh(Sketch &sketch) {
     Boundary = sketch.boundary();
-
     for (size_t i = 0; i != sketch.size_curves(); ++i) {
         auto c = sketch.curve(i);
         if (!(c->for_construction())) {
@@ -892,8 +891,8 @@ void Mesh::save_as(std::string path, std::string file_name) const {
         This is a stub for visualization
     */
 
-    if (!boost::filesystem::exists(path)) {
-        boost::filesystem::create_directories(path);
+    if (!std::experimental::filesystem::exists(path)) {
+        std::experimental::filesystem::create_directories(path);
     }
 
     std::fstream fs;

src/Physics/src/FiniteElementMesh.h

@@ -363,8 +363,8 @@ public:
     }
 
     void write_scalar(Eigen::VectorXd const &v, std::string path, std::string file_name) const override {
-        if (!boost::filesystem::exists(path)) {
-            boost::filesystem::create_directories(path);
+        if (!std::experimental::filesystem::exists(path)) {
+            std::experimental::filesystem::create_directories(path);
         }
 
         std::fstream fs;
@@ -403,8 +403,8 @@ public:
     }
 
     void write_vector(Eigen::ArrayXd const &Fx, Eigen::ArrayXd const &Fy, std::string path, std::string file_name) const override {
-        if (!boost::filesystem::exists(path)) {
-            boost::filesystem::create_directories(path);
+        if (!std::experimental::filesystem::exists(path)) {
+            std::experimental::filesystem::create_directories(path);
         }
 
         std::fstream fs;

src/Sketch/src/Sketch.cpp

@@ -183,8 +183,8 @@ void Sketch::save_as<SaveMethod::Rasterize>(std::string path, std::string file_n
         This is a stub for visualization
     */
 
-    if (!boost::filesystem::exists(path)) {
-        boost::filesystem::create_directories(path);
+    if (!std::experimental::filesystem::exists(path)) {
+        std::experimental::filesystem::create_directories(path);
     }
 
     std::fstream fs;

src/Sketch/src/Sketch.h

@@ -10,7 +10,7 @@
 #include <vector>
 #include <iostream>
 
-#include <boost/filesystem.hpp>
+#include <experimental/filesystem>
 
 #include "Eigen"
 

test/CMakeLists.txt

@@ -35,4 +35,4 @@ set(SOURCE_FILES
 
 add_executable(run_tests ${SOURCE_FILES})
 
-target_link_libraries(run_tests gtest gtest_main sketch mesh physics quadrature)
\ No newline at end of file
+target_link_libraries(run_tests gtest gtest_main sketch mesh physics quadrature stdc++fs)
\ No newline at end of file