Added console progress meter

This utility originated with my bot rawr-ebooks. It was packaged into a class during the development of verbly, and appears here in its most recent form with adjustments made in a currently-unreleased bot called crystalline.

1 files changed, 61 insertions, 0 deletions

@@ -0,0 +1,61 @@
+#ifndef PROGRESS_H_A34EF856
+#define PROGRESS_H_A34EF856
+
+#include <string>
+#include <iostream>
+
+namespace hatkirby {
+
+  class progress {
+  public:
+
+    progress(
+      std::string message,
+      unsigned long total) :
+        message(message),
+        total(total)
+    {
+      std::cout << message << "   0%" << std::flush;
+    }
+
+    void update(unsigned long val)
+    {
+      if (val <= total)
+      {
+        cur = val;
+      } else {
+        cur = total;
+      }
+
+      unsigned long pp = cur * 100 / total;
+      if (pp != lprint)
+      {
+        lprint = pp;
+
+        std::cout << "\b\b\b\b" << std::right;
+        std::cout.width(3);
+        std::cout << pp << "%" << std::flush;
+      }
+    }
+
+    void update()
+    {
+      update(cur+1);
+    }
+
+    ~progress()
+    {
+      std::cout << "\b\b\b\b100%" << std::endl;
+    }
+
+  private:
+
+    std::string message;
+    unsigned long total;
+    unsigned long cur = 0;
+    unsigned long lprint = 0;
+  };
+
+}
+
+#endif /* end of include guard: PROGRESS_H_A34EF856 */