Use u128 for byte sizes

Per issue #58, u64 is insufficient for use with very large sparse files.
Enormous file sizes are also a common filesystem error trope, either
from disk corruption or software bugs, and they're also conceivable with
virtual filesystems.

Handle this as gracefully as can be reasonably expected using 128-bit
integers, which should be sufficient for most uses.

4 files changed, 6 insertions, 6 deletions

diff --git a/src/interactive/app_test/utils.rs b/src/interactive/app_test/utils.rs
index 57854d9..ed94720 100644
--- a/src/interactive/app_test/utils.rs
+++ b/src/interactive/app_test/utils.rs
@@ -33,7 +33,7 @@ pub fn node_by_name(app: &TerminalApp, name: impl AsRef<OsStr>) -> &EntryData {
 pub fn index_by_name_and_size(
     app: &TerminalApp,
     name: impl AsRef<OsStr>,
-    size: Option<u64>,
+    size: Option<u128>,
 ) -> TreeIndex {
     let name = name.as_ref();
     let t: Vec<_> = app
@@ -276,7 +276,7 @@ pub fn sample_02_tree() -> Tree {
 
 pub fn make_add_node<'a>(
     t: &'a mut Tree,
-) -> impl FnMut(&str, u64, Option<NodeIndex>) -> NodeIndex + 'a {
+) -> impl FnMut(&str, u128, Option<NodeIndex>) -> NodeIndex + 'a {
     move |name, size, maybe_from_idx| {
         let n = t.add_node(EntryData {
             name: PathBuf::from(name),
diff --git a/src/interactive/widgets/entries.rs b/src/interactive/widgets/entries.rs
index fc68f44..279a7fa 100644
--- a/src/interactive/widgets/entries.rs
+++ b/src/interactive/widgets/entries.rs
@@ -60,7 +60,7 @@ impl Entries {
                 .is_none()
         };
 
-        let total: u64 = entries.iter().map(|b| b.data.size).sum();
+        let total: u128 = entries.iter().map(|b| b.data.size).sum();
         let title = match path_of(tree, *root).to_string_lossy().to_string() {
             ref p if p.is_empty() => Path::new(".")
                 .canonicalize()
diff --git a/src/interactive/widgets/footer.rs b/src/interactive/widgets/footer.rs
index 461580c..190c6c9 100644
--- a/src/interactive/widgets/footer.rs
+++ b/src/interactive/widgets/footer.rs
@@ -11,7 +11,7 @@ use tui::{
 pub struct Footer;
 
 pub struct FooterProps {
-    pub total_bytes: Option<u64>,
+    pub total_bytes: Option<u128>,
     pub entries_traversed: u64,
     pub format: ByteFormat,
     pub message: Option<String>,
diff --git a/src/interactive/widgets/mark.rs b/src/interactive/widgets/mark.rs
index 1f59738..3c26a3a 100644
--- a/src/interactive/widgets/mark.rs
+++ b/src/interactive/widgets/mark.rs
@@ -31,7 +31,7 @@ pub enum MarkMode {
 
 pub type EntryMarkMap = BTreeMap<TreeIndex, EntryMark>;
 pub struct EntryMark {
-    pub size: u64,
+    pub size: u128,
     pub path: PathBuf,
     pub index: usize,
     pub num_errors_during_deletion: usize,
@@ -230,7 +230,7 @@ impl MarkPane {
         let title = format!(
             "Marked {} items ({}) ",
             marked.len(),
-            format.display(marked.iter().map(|(_k, v)| v.size).sum::<u64>())
+            format.display(marked.iter().map(|(_k, v)| v.size).sum::<u128>())
         );
         let selected = self.selected;
         let has_focus = self.has_focus;