Merge pull request #303 from felix-cw/ruff-format

Add support for formatting with ruff

Author: ryantam626

jupyterlab_code_formatter/formatters.py

@@ -474,6 +474,18 @@ def format_code(
             return process.stdout
 
 
+class RuffFixFormatter(CommandLineFormatter):
+
+    def __init__(self):
+        try:
+            from ruff.__main__ import find_ruff_bin
+
+            ruff_command = find_ruff_bin()
+        except (ImportError, FileNotFoundError):
+            ruff_command = "ruff"
+        self.command = [ruff_command, "check", "--fix-only", "-"]
+
+
 SERVER_FORMATTERS = {
     "black": BlackFormatter(),
     "blue": BlueFormatter(),
@@ -485,4 +497,5 @@ def format_code(
     "scalafmt": CommandLineFormatter(command=["scalafmt", "--stdin"]),
     "rustfmt": CommandLineFormatter(command=["rustfmt"]),
     "astyle": CommandLineFormatter(command=["astyle"]),
+    "ruff": RuffFixFormatter(),
 }

schema/settings.json

@@ -296,6 +296,13 @@
             "additionalProperties": false,
             "type": "object"
         },
+        "ruff": {
+            "properties":{
+                "args": {"type": "array", "items": {"type": "string"}}
+            },
+            "additionalProperties": false,
+            "type": "object"
+        },
         "formatOnSave": {
             "additionalProperties": false,
             "type": "boolean"
@@ -395,6 +402,14 @@
                 "args": []
             }
         },
+        "ruff": {
+            "title": "Ruff Config",
+            "description": "Command line options to be passed to ruff.",
+            "$ref": "#/definitions/ruff",
+            "default": {
+                "args": ["--select=I001"]
+            }
+        },
         "suppressFormatterErrors": {
             "title": "Suppress formatter errors",
             "description": "Whether to suppress all errors reported by formatter while formatting. Useful when you have format on save mode on.",