feat(fmt): add TOML formatter

cli/Cargo.toml

@@ -114,6 +114,7 @@ dotenvy = "0.15.7"
 dprint-plugin-json = "=0.19.4"
 dprint-plugin-jupyter = "=0.1.5"
 dprint-plugin-markdown = "=0.17.8"
+dprint-plugin-toml = "=0.6.4"
 dprint-plugin-typescript = "=0.93.3"
 fancy-regex = "=0.10.0"
 faster-hex.workspace = true

cli/tools/fmt.rs

@@ -276,6 +276,7 @@ fn format_markdown(
           | "yml"
           | "yaml"
           | "sql"
+          | "toml"
       ) {
         // It's important to tell dprint proper file extension, otherwise
         // it might parse the file twice.
@@ -305,6 +306,7 @@ fn format_markdown(
             }
           }
           "yml" | "yaml" => format_yaml(text, fmt_options),
+          "toml" => format_toml(text, fmt_options),
           "sql" => {
             if unstable_options.sql {
               format_sql(text, fmt_options)
@@ -362,6 +364,38 @@ pub fn format_css(
   })
 }
 
+fn format_toml(
+  file_text: &str,
+  fmt_options: &FmtOptionsConfig,
+) -> Result<Option<String>, AnyError> {
+  let ignore_file = file_text
+    .lines()
+    .take_while(|line| line.starts_with('#'))
+    .any(|line| {
+      line
+        .strip_prefix('#')
+        .unwrap()
+        .trim()
+        .starts_with("deno-fmt-ignore-file")
+    });
+
+  if ignore_file {
+    return Ok(None);
+  }
+
+  let formatted_str = dprint_plugin_toml::format_text(
+    &PathBuf::from(""),
+    file_text,
+    &dprint_plugin_toml::configuration::ConfigurationBuilder::new()
+      .line_width(fmt_options.line_width.unwrap_or(80))
+      .use_tabs(fmt_options.use_tabs.unwrap_or_default())
+      .indent_width(fmt_options.indent_width.unwrap_or(2))
+      .build(),
+  )?;
+
+  Ok(formatted_str)
+}
+
 fn format_yaml(
   file_text: &str,
   fmt_options: &FmtOptionsConfig,
@@ -590,6 +624,7 @@ pub fn format_file(
       }
     }
     "yml" | "yaml" => format_yaml(file_text, fmt_options),
+    "toml" => format_toml(file_text, fmt_options),
     "ipynb" => dprint_plugin_jupyter::format_text(
       file_text,
       |file_path: &Path, file_text: String| {
@@ -1285,6 +1320,7 @@ fn is_supported_ext_fmt(path: &Path) -> bool {
         | "yaml"
         | "ipynb"
         | "sql"
+        | "toml"
     )
   })
 }

tests/specs/fmt/toml/__test__.jsonc

@@ -0,0 +1,37 @@
+{
+  "tempDir": true,
+  "tests": {
+    "badly_formatted": {
+      "args": "fmt badly_formatted.toml",
+      "output": "[WILDLINE]badly_formatted.toml\nChecked 1 file\n"
+    },
+    "well_formatted": {
+      "args": "fmt --check well_formatted.toml",
+      "output": "Checked 1 file\n"
+    },
+    "ignore_line": {
+      "args": "fmt --check ignore_line.toml",
+      "output": "Checked 1 file\n"
+    },
+    "ignore_file": {
+      "args": "fmt ignore_file.toml",
+      "output": "Checked 1 file\n"
+    },
+    "ignore_file2": {
+      "args": "fmt ignore_file2.toml",
+      "output": "Checked 1 file\n"
+    },
+    "ignore_file3": {
+      "args": "fmt ignore_file3.toml",
+      "output": "Checked 1 file\n"
+    },
+    "ignore_file4": {
+      "args": "fmt ignore_file4.toml",
+      "output": "Checked 1 file\n"
+    },
+    "wrong_file_ignore": {
+      "args": "fmt wrong_file_ignore.toml",
+      "output": "wrong_file_ignore.out"
+    }
+  }
+}

tests/specs/fmt/toml/badly_formatted.toml

@@ -0,0 +1,15 @@
+[database]
+enabled = true
+ports = [ 8000, 8001, 8002 ]
+data = [ ["delta", "phi"], [3.14] ]
+temp_targets = { cpu = 79.5, case = 72.0 }
+
+[servers]
+
+[servers.alpha]
+ip = "10.0.0.1"
+role = "frontend"
+
+[servers.beta]
+ip = "10.0.0.2"
+role = "backend"

tests/specs/fmt/toml/ignore_file.toml

@@ -0,0 +1,2 @@
+# deno-fmt-ignore-file
+enabled =    true

tests/specs/fmt/toml/ignore_file2.toml

@@ -0,0 +1,2 @@
+#deno-fmt-ignore-file
+enabled =     true

tests/specs/fmt/toml/ignore_file3.toml

@@ -0,0 +1,8 @@
+# Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor
+# incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, 
+# quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
+# deno-fmt-ignore-file
+
+
+
+enabled =     true

tests/specs/fmt/toml/ignore_file4.toml

@@ -0,0 +1,4 @@
+# deno-fmt-ignore-file Because this is templated yaml file
+
+
+enabled =     true

tests/specs/fmt/toml/ignore_line.toml

@@ -0,0 +1,2 @@
+# deno-fmt-ignore
+enabled =     true

tests/specs/fmt/toml/well_formatted.toml

@@ -0,0 +1,15 @@
+[database]
+enabled = true
+ports = [8000, 8001, 8002]
+data = [["delta", "phi"], [3.14]]
+temp_targets = { cpu = 79.5, case = 72.0 }
+
+[servers]
+
+[servers.alpha]
+ip = "10.0.0.1"
+role = "frontend"
+
+[servers.beta]
+ip = "10.0.0.2"
+role = "backend"

tests/specs/fmt/toml/wrong_file_ignore.out

@@ -0,0 +1,5 @@
+Error formatting: [WILDCARD]wrong_file_ignore.toml
+   Line 5, column 10: expected value
+
+  enabled =
+Checked 1 file

tests/specs/fmt/toml/wrong_file_ignore.toml

@@ -0,0 +1,5 @@
+# File ignore directive only works if it's in the first cluster
+# of comment, ie. there are no empty lines after the first n-leading lines.
+
+# deno-fmt-ignore-file
+enabled =