first commit

Utils/ProgressReporter.cpp

@@ -0,0 +1,41 @@
+#include "pch.h"
+#include "ProgressReporter.h"
+#include <iostream>
+#include <iomanip>
+
+ProgressReporter::ProgressReporter(int totalItems, int barWidth)
+    : m_total(totalItems), m_width(barWidth),
+    m_lastDraw(std::chrono::steady_clock::now())
+{
+}
+
+bool ProgressReporter::update(int currentIndex) {
+    // Compute percent
+    int percent = static_cast<int>(100.0 * currentIndex / (m_total - 1));
+    if (percent == m_lastPercent) {
+        // Throttle to ~30 FPS
+        auto now = std::chrono::steady_clock::now();
+        if (std::chrono::duration_cast<std::chrono::milliseconds>(now - m_lastDraw).count() < 33)
+            return false;
+    }
+    m_lastPercent = percent;
+    m_lastDraw = std::chrono::steady_clock::now();
+
+    // Build bar
+    int pos = m_width * percent / 100;
+    std::cout << "\r\33[2K[";
+
+    for (int i = 0; i < m_width; i++)
+        std::cout << (i <= pos ? '#' : ' ');
+
+    std::cout
+        << "] " << std::fixed << std::setprecision(1)
+        << percent << "% (" << currentIndex << "/" << (m_total - 1) << ")"
+        << std::flush;
+
+    return true;
+}
+
+void ProgressReporter::finish() {
+    std::cout << "\n";
+}