Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

crates/rvf/rvf-import/src/progress.rs

@@ -0,0 +1,54 @@
+//! Progress reporting for long-running imports.
+
+use std::io::Write;
+
+/// Trait for receiving import progress callbacks.
+pub trait ProgressReporter {
+    /// Called after each batch with cumulative counts.
+    fn report(&self, imported: u64, rejected: u64, total: u64);
+}
+
+/// A reporter that prints progress to stderr.
+pub struct StderrProgress;
+
+impl ProgressReporter for StderrProgress {
+    fn report(&self, imported: u64, rejected: u64, total: u64) {
+        if total > 0 {
+            let pct = (imported + rejected) as f64 / total as f64 * 100.0;
+            eprint!("\r  imported: {imported}, rejected: {rejected}, total: {total} ({pct:.1}%)");
+            let _ = std::io::stderr().flush();
+        }
+    }
+}
+
+/// A reporter that collects reports for testing.
+pub struct CollectingProgress {
+    reports: std::sync::Mutex<Vec<(u64, u64, u64)>>,
+}
+
+impl Default for CollectingProgress {
+    fn default() -> Self {
+        Self {
+            reports: std::sync::Mutex::new(Vec::new()),
+        }
+    }
+}
+
+impl CollectingProgress {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn reports(&self) -> Vec<(u64, u64, u64)> {
+        self.reports.lock().unwrap().clone()
+    }
+}
+
+impl ProgressReporter for CollectingProgress {
+    fn report(&self, imported: u64, rejected: u64, total: u64) {
+        self.reports
+            .lock()
+            .unwrap()
+            .push((imported, rejected, total));
+    }
+}