fastfetch: load config from fastfetch binary path

Fix #1649

Author: CarterLi

src/fastfetch.c

@@ -472,31 +472,27 @@ static void optionParseConfigFile(FFdata* data, const char* key, const char* val
 
     if (parseJsoncFile(value)) return;
 
-    //Try to load as a relative path
-
     FF_STRBUF_AUTO_DESTROY absolutePath = ffStrbufCreateA(128);
-    FF_LIST_FOR_EACH(FFstrbuf, path, instance.state.platform.dataDirs)
+
+    //Try to load as a relative path with the directory of fastfetch binary
+    if (instance.state.platform.exePath.length)
     {
-        //We need to copy it, because if a config file loads a config file, the value of path must be unchanged
-        ffStrbufSet(&absolutePath, path);
-        ffStrbufAppendS(&absolutePath, "fastfetch/presets/");
+        ffStrbufSet(&absolutePath, &instance.state.platform.exePath);
+        ffStrbufSubstrBeforeLastC(&absolutePath, '/');
+        ffStrbufAppendS(&absolutePath, "/");
         ffStrbufAppendS(&absolutePath, value);
 
-        bool success = parseJsoncFile(absolutePath.chars);
-        if (!success)
-        {
-            ffStrbufAppendS(&absolutePath, ".jsonc");
-            success = parseJsoncFile(absolutePath.chars);
-        }
-
-        if (success) return;
+        if (parseJsoncFile(absolutePath.chars)) return;
+        ffStrbufClear(&absolutePath);
     }
 
+    //Try to load as a relative path
+
+    FF_LIST_FOR_EACH(FFstrbuf, path, instance.state.platform.dataDirs)
     {
-        //Try exe path
-        ffStrbufSet(&absolutePath, &instance.state.platform.exePath);
-        ffStrbufSubstrBeforeLastC(&absolutePath, '/');
-        ffStrbufAppendS(&absolutePath, "/presets/");
+        //We need to copy it, because if a config file loads a config file, the value of path must be unchanged
+        ffStrbufSet(&absolutePath, path);
+        ffStrbufAppendS(&absolutePath, "fastfetch/presets/");
         ffStrbufAppendS(&absolutePath, value);
 
         bool success = parseJsoncFile(absolutePath.chars);

src/util/platform/FFPlatform_unix.c

@@ -172,6 +172,14 @@ static void getDataDirs(FFPlatform* platform)
 #endif
     ffPlatformPathAddAbsolute(&platform->dataDirs, FASTFETCH_TARGET_DIR_USR "/local/share/");
     ffPlatformPathAddAbsolute(&platform->dataDirs, FASTFETCH_TARGET_DIR_USR "/share/");
+
+    if (platform->exePath.length > 0)
+    {
+        // Add ${currentExePath}
+        FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateCopy(&platform->exePath);
+        ffStrbufSubstrBeforeLastC(&path, '/');
+        ffPlatformPathAddAbsolute(&platform->dataDirs, path.chars);
+    }
 }
 
 static void getUserName(FFPlatform* platform, const struct passwd* pwd)

src/util/platform/FFPlatform_windows.c

@@ -129,6 +129,14 @@ static void getDataDirs(FFPlatform* platform)
     platformPathAddKnownFolder(&platform->dataDirs, &FOLDERID_RoamingAppData);
     platformPathAddKnownFolder(&platform->dataDirs, &FOLDERID_LocalAppData);
     ffPlatformPathAddHome(&platform->dataDirs, platform, "");
+
+    if (platform->exePath.length > 0)
+    {
+        // Add ${currentExePath}
+        FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateCopy(&platform->exePath);
+        ffStrbufSubstrBeforeLastC(&path, '/');
+        ffPlatformPathAddAbsolute(&platform->dataDirs, path.chars);
+    }
 }
 
 static void getUserName(FFPlatform* platform)