Split fish functions off into separate file, add clangfmt function

home-manager/modules/fish/default.nix

@@ -11,25 +11,7 @@ in
   config = mkIf (cfg.enable) {
     programs.fish = {
       enable = true;
-      functions = {
+      functions = (import ./functions.nix);
-        reload = {
-          body = ''
-            history --save
-            set -gx dirprev $dirprev
-            set -gx dirnext $dirnext
-            set -gx dirstack $dirstack
-            set -g fish_greeting ""
-            exec fish
-          '';
-          description = "Reload Fish while keeping some context";
-        };
-        update-env = {
-          body = ''
-            set -gx SWAYSOCK /run/user/(id -u)/sway-ipc.(id -u).(pgrep -x sway).sock
-          '';
-          description = "Update environment variables";
-        };
-      };
 
       plugins = [
         {

home-manager/modules/fish/functions.nix

@@ -0,0 +1,43 @@
+{
+  reload = {
+    body = ''
+      history --save
+      set -gx dirprev $dirprev
+      set -gx dirnext $dirnext
+      set -gx dirstack $dirstack
+      set -g fish_greeting ""
+      exec fish
+    '';
+    description = "Reload Fish while keeping some context";
+  };
+  update-env = {
+    body = ''
+      set -gx SWAYSOCK /run/user/(id -u)/sway-ipc.(id -u).(pgrep -x sway).sock
+    '';
+    description = "Update environment variables";
+  };
+  clangfmt = {
+    body = ''
+      	set source_exts "h" "hpp" "c" "cpp" "cc" "cp" "c++" "cxx" "cu" "proto"
+        set files (git diff --diff-filter=ACMR --name-only $argv[1])
+        set repo_path (realpath --relative-to=$PWD (git rev-parse --show-toplevel))
+        set clangformat (git config --get clangFormat.binary)
+        echo "Formatting files in $repo_path with $clangformat"
+
+        for f in $files
+          set file (realpath $repo_path/$f)
+          echo "Processing $file"
+    
+          set ext (string match -r ".*\.([^\.]+)\$" $file)[2]
+
+          if contains $ext $source_exts
+            echo "Formatting $file"
+            $clangformat -i -style=file $file
+          else
+            echo "Extension $ext not found in $source_exts"
+          end
+        end
+    '';
+    description = "Use clang-format to format all changed and added files";
+  };
+}