Properly read retarded xdg user dirs

1 files changed, 59 insertions, 2 deletions

diff --git a/src/Config.cpp b/src/Config.cpp
index 2d44ed1..2938338 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -1,5 +1,7 @@
 #include "../include/Config.hpp"
 #include "../include/Storage.hpp"
+#include <map>
+#include <limits.h>
 #include <json/value.h>
 #include <assert.h>
 #include <X11/Xlib.h>
@@ -13,6 +15,60 @@ namespace QuickMedia {
     static float scale = 1.0f;
     static bool scale_set = false;
 
+    // Whoever designed xdg-user-dirs is retarded. Why are some XDG variables environment variables
+    // while others are in this pseudo shell config file ~/.config/user-dirs.dirs
+    static std::map<std::string, std::string> get_xdg_variables() {
+        std::string user_dirs_filepath;
+        const char *xdg_config_home = getenv("XDG_CONFIG_HOME");
+        if(xdg_config_home) {
+            user_dirs_filepath = xdg_config_home;
+        } else {
+            user_dirs_filepath = get_home_dir().data + "/.config";
+        }
+
+        user_dirs_filepath += "/user-dirs.dirs";
+
+        std::map<std::string, std::string> result;
+        FILE *f = fopen(user_dirs_filepath.c_str(), "rb");
+        if(!f)
+            return result;
+
+        char line[PATH_MAX];
+        while(fgets(line, sizeof(line), f)) {
+            int len = strlen(line);
+            if(len < 2)
+                continue;
+
+            if(line[len - 1] == '\n') {
+                line[len - 1] = '\0';
+                len--;
+            }
+
+            if(line[len - 1] != '"')
+                continue;
+
+            line[len - 1] = '\0';
+            len--;
+
+            const char *sep = strchr(line, '=');
+            if(!sep)
+                continue;
+
+            if(sep[1] != '\"')
+                continue;
+
+            std::string value(sep + 2);
+            if(strncmp(value.c_str(), "$HOME/", 6) == 0)
+                value = get_home_dir().data + value.substr(5);
+
+            std::string key(line, sep - line);
+            result[std::move(key)] = std::move(value);
+        }
+
+        fclose(f);
+        return result;
+    }
+
     static const int XFT_DPI_DEFAULT = 96;
     // Returns XFT_DPI_DEFAULT on error
     static int xrdb_get_dpi() {
@@ -269,6 +325,7 @@ namespace QuickMedia {
             peertube_known_instances_fallback();
 
         const std::string home_dir = get_home_dir().data;
+        auto xdg_vars = get_xdg_variables();
 
         struct DownloadPaths {
             const char *json_field;
@@ -300,8 +357,8 @@ namespace QuickMedia {
         for(const DownloadPaths &download_paths : download_paths_list) {
             if(download_paths.config_var->empty()) {
                 std::string dir = download_paths.fallback_dir;
-                const char *xdg_var = getenv(download_paths.xdg_var_name);
-                if(xdg_var)
+                const std::string &xdg_var = xdg_vars[download_paths.xdg_var_name];
+                if(!xdg_var.empty())
                     dir = xdg_var;
                 *download_paths.config_var = std::move(dir);
             }