1 files changed, 23 insertions, 0 deletions
diff --git a/Swiften/Base/FileSize.cpp b/Swiften/Base/FileSize.cpp
new file mode 100644
index 0000000..90fdc9a
--- /dev/null
+++ b/Swiften/Base/FileSize.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2010-2014 Kevin Smith and Remko Tronçon
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt 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", NULL};
+	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] : "") );
+}
+
+}