Init

Signed-off-by: Slendi <slendi@socopon.com>

src/main.rs

@@ -0,0 +1,35 @@
+use std::path::PathBuf;
+
+use clap::Parser;
+use humansize::DECIMAL;
+
+#[derive(Debug, Parser)]
+struct Args {
+    path: PathBuf,
+}
+
+fn compute_size(path: PathBuf) -> Result<u64, std::io::Error> {
+    if path.is_dir() {
+        std::fs::read_dir(path)?.fold(Ok(0_u64), |counter, entry| -> Result<u64, std::io::Error> {
+            if let Ok(counter) = counter {
+                Ok(counter + compute_size(entry?.path())?)
+            } else {
+                counter
+            }
+        })
+    } else {
+        Ok(std::fs::metadata(path)?.len())
+    }
+}
+
+fn main() {
+    let args = Args::parse();
+    match compute_size(args.path) {
+        Ok(size) => println!(
+            "Computed size sum: {} ({} bytes)",
+            humansize::format_size(size, DECIMAL),
+            size
+        ),
+        Err(error) => eprintln!("Failed to fetch size: {}", error),
+    }
+}