ext: Replace terminal_size with comfy-table

I was looking at our vendoring set and while it's not actually
relevant I found myself wondering why we had *three* versions
of `windows-sys`. Having that many crate versions is often a signal
that there's an unmaintained dependency.

And indeed, `terminal_size` is no longer cool. The "in" crowd
has moved on to newer, hipper things. Life moves fast, we need
to keep up.

(OK but yes also this drops some manual column printing code
 we had which is also a win)

Signed-off-by: Colin Walters <walters@verbum.org>

ostree-ext/Cargo.toml

@@ -24,6 +24,7 @@ chrono = { workspace = true }
 olpc-cjson = "0.1.1"
 clap = { workspace = true, features = ["derive","cargo"] }
 clap_mangen = { workspace = true, optional = true }
+comfy-table = "7.1.1"
 cap-std-ext = { workspace = true, features = ["fs_utf8"] }
 flate2 = { features = ["zlib"], default-features = false, version = "1.0.20" }
 fn-error-context = { workspace = true }
@@ -44,7 +45,6 @@ serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 tar = "0.4.43"
 tempfile = { workspace = true }
-terminal_size = "0.3"
 tokio = { workspace = true, features = ["io-std", "time", "process", "rt", "net"] }
 tokio-util = { workspace = true }
 tokio-stream = { features = ["sync"], version = "0.1.8" }

ostree-ext/src/cli.rs

@@ -899,35 +899,14 @@ async fn container_store(
     Ok(())
 }
 
-fn print_column(s: &str, clen: u16, remaining: &mut terminal_size::Width) {
-    let l: u16 = s.chars().count().try_into().unwrap();
-    let l = l.min(remaining.0);
-    print!("{}", &s[0..l as usize]);
-    if clen > 0 {
-        // We always want two trailing spaces
-        let pad = clen.saturating_sub(l) + 2;
-        for _ in 0..pad {
-            print!(" ");
-        }
-        remaining.0 = remaining.0.checked_sub(l + pad).unwrap();
-    }
-}
-
 /// Output the container image history
 async fn container_history(repo: &ostree::Repo, imgref: &ImageReference) -> Result<()> {
     let img = crate::container::store::query_image(repo, imgref)?
         .ok_or_else(|| anyhow::anyhow!("No such image: {}", imgref))?;
-    let columns = [("ID", 20u16), ("SIZE", 10), ("CREATED BY", 0)];
-    let width = terminal_size::terminal_size()
-        .map(|x| x.0)
-        .unwrap_or(terminal_size::Width(80));
-    {
-        let mut remaining = width;
-        for (name, width) in columns.iter() {
-            print_column(name, *width, &mut remaining);
-        }
-        println!();
-    }
+    let mut table = comfy_table::Table::new();
+    table
+        .load_preset(comfy_table::presets::NOTHING)
+        .set_header(vec!["ID", "SIZE", "CREATED BY"]);
 
     let mut history = img.configuration.history().iter();
     let layers = img.manifest.layers().iter();
@@ -937,19 +916,15 @@ async fn container_history(repo: &ostree::Repo, imgref: &ImageReference) -> Resu
             .and_then(|s| s.created_by().as_deref())
             .unwrap_or("");
 
-        let mut remaining = width;
-
         let digest = layer.digest().digest();
         // Verify it's OK to slice, this should all be ASCII
         assert!(digest.is_ascii());
-        let digest_max = columns[0].1;
-        let digest = &digest[0..digest_max as usize];
-        print_column(digest, digest_max, &mut remaining);
+        let digest_max = 20usize;
+        let digest = &digest[0..digest_max];
         let size = glib::format_size(layer.size());
-        print_column(size.as_str(), columns[1].1, &mut remaining);
-        print_column(created_by, columns[2].1, &mut remaining);
-        println!();
+        table.add_row([digest, size.as_str(), created_by]);
     }
+    println!("{table}");
     Ok(())
 }