1 files changed, 24 insertions, 0 deletions
diff --git a/Swiften/Base/FileSize.cpp b/Swiften/Base/FileSize.cpp
new file mode 100644
index 0000000..a335337
--- /dev/null
+++ b/Swiften/Base/FileSize.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2010-2016 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/Base/FileSize.h>
+
+#include <boost/format.hpp>
+
+namespace Swift {
+
+std::string formatSize(const boost::uintmax_t bytes) {
+    static const char *siPrefix[] = {"k", "M", "G", "T", "P", "E", "Z", "Y", nullptr};
+    int power = 0;
+    double engBytes = bytes;
+    while (engBytes >= 1000) {
+        ++power;
+        engBytes = engBytes / 1000.0;
+    }
+    return str( boost::format("%.1lf %sB") % engBytes % (power > 0 ? siPrefix[power-1] : "") );
+}
+
+}