feat(protobuf): add support for buf

README.md

@@ -91,7 +91,7 @@ mdsf init
 | OCaml      | `ocamlformat`                                                 |
 | ObjectiveC | `clang-format`                                                |
 | Perl       | `perltidy`                                                    |
-| Protobuf   | `clang-format`                                                |
+| Protobuf   | `buf`, `clang-format`                                         |
 | PureScript | `purs-tidy`                                                   |
 | Python     | `autopep8`, `black`, `blue`, `isort`, `ruff`, `usort`, `yapf` |
 | ReScript   | `rescript_format`                                             |

schemas/v0.0.2/mdsf.schema.json

@@ -325,7 +325,7 @@
     "protobuf": {
       "default": {
         "enabled": true,
-        "formatter": "clang-format"
+        "formatter": [["buf", "clang-format"]]
       },
       "allOf": [
         {
@@ -1782,7 +1782,7 @@
     },
     "Protobuf": {
       "type": "string",
-      "enum": ["clang-format"]
+      "enum": ["buf", "clang-format"]
     },
     "PureScript": {
       "type": "string",

src/formatters/mod.rs

@@ -11,6 +11,7 @@ pub mod biome;
 pub mod black;
 pub mod blade_formatter;
 pub mod blue;
+pub mod buf;
 pub mod clang_format;
 pub mod cljstyle;
 pub mod crystal_format;
@@ -75,7 +76,7 @@ pub fn setup_snippet(code: &str, file_ext: &str) -> std::io::Result<NamedTempFil
         },
     );
 
-    let mut f = if file_ext == ".cs" {
+    let mut f = if file_ext == ".cs" || file_ext == ".proto" {
         let _ = std::fs::create_dir_all(".mdsf-cache");
         b.tempfile_in(".mdsf-cache")
     } else {

src/languages/protobuf.rs

@@ -1,13 +1,17 @@
 use schemars::JsonSchema;
 
-use crate::formatters::{clang_format::format_using_clang_format, MdsfFormatter};
+use crate::formatters::{
+    buf::format_using_buf, clang_format::format_using_clang_format, MdsfFormatter,
+};
 
 use super::{Lang, LanguageFormatter};
 
 #[derive(Debug, Default, serde::Serialize, serde::Deserialize, JsonSchema)]
 #[cfg_attr(test, derive(PartialEq, Eq))]
 pub enum Protobuf {
     #[default]
+    #[serde(rename = "buf")]
+    Buf,
     #[serde(rename = "clang-format")]
     ClangFormat,
 }
@@ -25,7 +29,10 @@ impl Default for Lang<Protobuf> {
 impl Default for MdsfFormatter<Protobuf> {
     #[inline]
     fn default() -> Self {
-        Self::Single(Protobuf::ClangFormat)
+        Self::Multiple(vec![Self::Multiple(vec![
+            Self::Single(Protobuf::Buf),
+            Self::Single(Protobuf::ClangFormat),
+        ])])
     }
 }
 
@@ -36,6 +43,7 @@ impl LanguageFormatter for Protobuf {
         snippet_path: &std::path::Path,
     ) -> std::io::Result<(bool, Option<String>)> {
         match self {
+            Self::Buf => format_using_buf(snippet_path),
             Self::ClangFormat => format_using_clang_format(snippet_path),
         }
     }
@@ -75,6 +83,30 @@ mod test_protobuf {
         .is_none());
     }
 
+    #[test_with::executable(buf)]
+    #[test]
+    fn test_buf() {
+        let expected_output = "service SearchService {
+  rpc Search(SearchRequest) returns (SearchResponse);
+}
+";
+
+        let l = Lang::<Protobuf> {
+            enabled: true,
+            formatter: MdsfFormatter::Single(Protobuf::Buf),
+        };
+
+        let snippet = setup_snippet(INPUT, EXTENSION).expect("it to save the file");
+        let snippet_path = snippet.path();
+
+        let output = l
+            .format(snippet_path)
+            .expect("it to not fail")
+            .expect("it to be a snippet");
+
+        assert_eq!(output, expected_output);
+    }
+
     #[test_with::executable(clang-format)]
     #[test]
     fn test_clang_format() {