Split commands.rs into separate files (#2792)

crates/ruff_cli/src/commands/clean.rs

@@ -0,0 +1,34 @@
+use std::fs::remove_dir_all;
+use std::io::{self, BufWriter, Write};
+
+use anyhow::Result;
+use colored::Colorize;
+use path_absolutize::path_dedot;
+use walkdir::WalkDir;
+
+use ruff::cache::CACHE_DIR_NAME;
+use ruff::fs;
+use ruff::logging::LogLevel;
+
+/// Clear any caches in the current directory or any subdirectories.
+pub fn clean(level: LogLevel) -> Result<()> {
+    let mut stderr = BufWriter::new(io::stderr().lock());
+    for entry in WalkDir::new(&*path_dedot::CWD)
+        .into_iter()
+        .filter_map(Result::ok)
+        .filter(|entry| entry.file_type().is_dir())
+    {
+        let cache = entry.path().join(CACHE_DIR_NAME);
+        if cache.is_dir() {
+            if level >= LogLevel::Default {
+                writeln!(
+                    stderr,
+                    "Removing cache at: {}",
+                    fs::relativize_path(&cache).bold()
+                )?;
+            }
+            remove_dir_all(&cache)?;
+        }
+    }
+    Ok(())
+}