Report the size used by the pile itself in the report

datman/src/commands/report.rs

@@ -13,6 +13,7 @@ use std::io::Read;
 use std::mem;
 use std::mem::size_of;
 use std::os::unix::ffi::OsStrExt;
+use std::os::unix::fs::MetadataExt;
 use std::path::Path;
 use yama::chunking::RecursiveUnchunker;
 use yama::commands::{load_pile_descriptor, open_pile, retrieve_tree_node};
@@ -371,7 +372,22 @@ fn format_size(chunks: u32, average_chunk_size: Option<f64>) -> String {
     format!("{} c{}", chunks, est_size_suffix)
 }
 
+fn calculate_total_filesize_of_dir(dir: &Path) -> anyhow::Result<u64> {
+    let mut total = 0;
+    for file in std::fs::read_dir(dir)? {
+        let file = file?;
+        let metadata = file.metadata()?;
+        total += metadata.size();
+        if metadata.is_dir() {
+            total += calculate_total_filesize_of_dir(&file.path())?;
+        }
+    }
+    Ok(total)
+}
+
 pub fn print_filesystem_space(pile_path: &Path) -> anyhow::Result<()> {
+    let usage_for_pile = calculate_total_filesize_of_dir(&pile_path)?;
+
     let path_c = CString::new(pile_path.as_os_str().as_bytes()).unwrap();
     let stats = unsafe {
         let mut stats: libc::statfs = mem::zeroed();
@@ -409,6 +425,7 @@ pub fn print_filesystem_space(pile_path: &Path) -> anyhow::Result<()> {
         Cell::new("Theoretical Size").fg(Color::Cyan),
         Cell::new("Usable Size").fg(Color::Cyan),
         Cell::new("Used").fg(Color::Cyan),
+        Cell::new("Used for Pile").fg(Color::Cyan),
         Cell::new("Available").fg(Color::Cyan),
     ]);
 
@@ -428,6 +445,7 @@ pub fn print_filesystem_space(pile_path: &Path) -> anyhow::Result<()> {
         .fg(Color::Blue),
         Cell::new(format!("{:>9}", usable_bytes.file_size(&format).unwrap())).fg(Color::Blue),
         Cell::new(format!("{:>9}", used_bytes.file_size(&format).unwrap())).fg(Color::Blue),
+        Cell::new(format!("{:>9}", usage_for_pile.file_size(&format).unwrap())).fg(Color::Blue),
         Cell::new(format!("{:>9}", avail_bytes.file_size(&format).unwrap()))
             .fg(available_space_colour),
     ]);