From ea0b2f2bb871e7760d1936bb9b193655682df413 Mon Sep 17 00:00:00 2001
From: Florent Le Coz <louiz@louiz.org>
Date: Fri, 18 Sep 2015 09:18:33 +0200
Subject: Create a xdg_path function

---
 louloulibs/louloulibs.h.cmake |  3 ++-
 louloulibs/utils/xdg.cpp      | 20 ++++++++++++++++++++
 louloulibs/utils/xdg.hpp      | 13 +++++++++++++
 src/main.cpp                  | 16 ++--------------
 src/test.cpp                  | 22 ++++++++++++++++++++++
 5 files changed, 59 insertions(+), 15 deletions(-)
 create mode 100644 louloulibs/utils/xdg.cpp
 create mode 100644 louloulibs/utils/xdg.hpp

diff --git a/louloulibs/louloulibs.h.cmake b/louloulibs/louloulibs.h.cmake
index 707d3fe..2feaf4e 100644
--- a/louloulibs/louloulibs.h.cmake
+++ b/louloulibs/louloulibs.h.cmake
@@ -5,4 +5,5 @@
 #cmakedefine POLLER ${POLLER}
 #cmakedefine BOTAN_FOUND
 #cmakedefine CARES_FOUND
-#cmakedefine SOFTWARE_VERSION "${SOFTWARE_VERSION}"
\ No newline at end of file
+#cmakedefine SOFTWARE_VERSION "${SOFTWARE_VERSION}"
+#cmakedefine PROJECT_NAME "${PROJECT_NAME}"
\ No newline at end of file
diff --git a/louloulibs/utils/xdg.cpp b/louloulibs/utils/xdg.cpp
new file mode 100644
index 0000000..7a60dd8
--- /dev/null
+++ b/louloulibs/utils/xdg.cpp
@@ -0,0 +1,20 @@
+#include <utils/xdg.hpp>
+#include <cstdlib>
+
+#include "louloulibs.h"
+
+std::string xdg_config_path(const std::string& filename)
+{
+  const char* xdg_config_home = ::getenv("XDG_CONFIG_HOME");
+  if (xdg_config_home && xdg_config_home[0] == '/')
+    return std::string{xdg_config_home} + "/" PROJECT_NAME "/" + filename;
+  else
+    {
+      const char* home = ::getenv("HOME");
+      if (home)
+        return std::string{home} + "/" ".config" "/" PROJECT_NAME "/" + filename;
+      else
+        return filename;
+    }
+}
+
diff --git a/louloulibs/utils/xdg.hpp b/louloulibs/utils/xdg.hpp
new file mode 100644
index 0000000..20f5bb7
--- /dev/null
+++ b/louloulibs/utils/xdg.hpp
@@ -0,0 +1,13 @@
+#ifndef XDG_HPP_INCLUDED
+#define XDG_HPP_INCLUDED
+
+#include <string>
+
+/**
+ * Returns a path for the given filename, according to the XDG base
+ * directory specification, see
+ * http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+ */
+std::string xdg_config_path(const std::string& filename);
+
+#endif /* XDG_HPP_INCLUDED */
diff --git a/src/main.cpp b/src/main.cpp
index 159dcbe..5c9e071 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,11 +4,11 @@
 #include <config/config.hpp>
 #include <logger/logger.hpp>
 #include <utils/reload.hpp>
+#include <utils/xdg.hpp>
 
 #include <iostream>
 #include <memory>
 #include <atomic>
-#include <cstdlib>
 
 #include <signal.h>
 
@@ -69,19 +69,7 @@ int main(int ac, char** av)
   if (ac > 1)
     Config::filename = av[1];
   else
-  {
-    const char* xdg_config_home = getenv("XDG_CONFIG_HOME");
-    if (xdg_config_home && xdg_config_home[0] == '/')
-      Config::filename = std::string{xdg_config_home} + "/" "biboumi" "/" "biboumi.cfg";
-    else
-    {
-      const char* home = getenv("HOME");
-      if (home)
-        Config::filename = std::string{home} + "/" ".config" "/" "biboumi" "/" "biboumi.cfg";
-      else
-        Config::filename = "biboumi.cfg";
-    }
-  }
+    Config::filename = xdg_path("biboumi.cfg");
 
   Config::file_must_exist = true;
   std::cerr << "Using configuration file: " << Config::filename << std::endl;
diff --git a/src/test.cpp b/src/test.cpp
index 842dfed..b8737e6 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -402,6 +402,28 @@ int main()
     assert(iid6.is_channel);
     assert(!iid6.is_user);
   }
+  {
+
+  {
+    std::cout << color << "Testing the xdg_path function…" << reset << std::endl;
+    std::string res;
+
+    ::unsetenv("XDG_CONFIG_HOME");
+    ::unsetenv("HOME");
+    res = xdg_config_path("coucou.txt");
+    std::cout << res << std::endl;
+    assert(res == "coucou.txt");
+
+    ::setenv("HOME", "/home/user", 1);
+    res = xdg_config_path("coucou.txt");
+    std::cout << res << std::endl;
+    assert(res == "/home/user/.config/biboumi/coucou.txt");
+
+    ::setenv("XDG_CONFIG_HOME", "/some_weird_dir", 1);
+    res = xdg_config_path("coucou.txt");
+    std::cout << res << std::endl;
+    assert(res == "/some_weird_dir/biboumi/coucou.txt");
+  }
 
   return 0;
 }
-- 
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