Switch to fs::path where appropriate.

src/options.cpp

@@ -24,6 +24,7 @@
 #include <boost/program_options/variables_map.hpp>
 
 #include <cstdlib>
+#include <filesystem>
 #include <fstream>
 #include <iostream>
 #include <string>
@@ -32,6 +33,7 @@ namespace epubgrep
 {
 
 namespace po = boost::program_options;
+namespace fs = std::filesystem;
 
 using boost::locale::translate;
 using std::cout;
@@ -83,7 +85,7 @@ po::variables_map parse_options(int argc, char *argv[])
     return vm;
 }
 
-std::string get_config_path()
+fs::path get_config_path()
 {
     auto get_env = [](std::string const &name)
     {
@@ -96,21 +98,21 @@ std::string get_config_path()
         return "";
     };
 
-    std::string path{get_env("XDG_CONFIG_HOME")};
+    fs::path path{get_env("XDG_CONFIG_HOME")};
     if (path.empty())
     {
         path = get_env("HOME");
         if (!path.empty())
         {
-            path += "/.config";
+            path /= ".config";
         }
     }
     if (!path.empty())
     {
-        path += "/";
+        return path /= "epubgrep.conf";
     }
 
-    return path += "epubgrep.conf";
+    return "epubgrep.conf";
 }
 
 } // namespace epubgrep

src/options.hpp

@@ -19,7 +19,7 @@
 
 #include <boost/program_options/variables_map.hpp>
 
-#include <string>
+#include <filesystem>
 
 namespace epubgrep
 {
@@ -36,7 +36,7 @@ po::variables_map parse_options(int argc, char *argv[]);
  *  If HOME is set:            ${HOME}/.config/epubgrep.conf
  *  Otherwise:                 epubgrep.conf
  */
-std::string get_config_path();
+std::filesystem::path get_config_path();
 
 } // namespace epubgrep