From: mh <mh>
Date: Thu, 28 Nov 2002 05:54:54 +0000 (+0000)
Subject: number formatter routine. print raw sizes in bytes to a human readable format
X-Git-Tag: MIR_1_0_0_RC1~4
X-Git-Url: http://erislabs.net/gitweb/?p=mir.git;a=commitdiff_plain;h=98f691cafca68d8dbb1a7d0cb3f72cb14260c968

number formatter routine. print raw sizes in bytes to a human readable format
---

diff --git a/source/mir/misc/NumberUtils.java b/source/mir/misc/NumberUtils.java
new file mode 100755
index 00000000..986b0789
--- /dev/null
+++ b/source/mir/misc/NumberUtils.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2001, 2002  The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with the com.oreilly.servlet library, any library
+ * licensed under the Apache Software License, The Sun (tm) Java Advanced
+ * Imaging library (JAI), The Sun JIMI library (or with modified versions of
+ * the above that use the same license as the above), and distribute linked
+ * combinations including the two.  You must obey the GNU General Public
+ * License in all respects for all of the code used other than the above
+ * mentioned libraries.  If you modify this file, you may extend this exception
+ * to your version of the file, but you are not obligated to do so.  If you do
+ * not wish to do so, delete this exception statement from your version.
+ */
+
+package  mir.misc;
+
+import freemarker.template.*;
+
+import java.text.NumberFormat;
+import java.util.List; 
+
+/**
+ * Help methods for number handling.
+ *
+ * @version $Id: NumberUtils.java,v 1.1.2.1 2002/11/28 05:54:54 mh Exp $
+ * @author mh, Mir-coders group
+ *
+ */
+
+public final class NumberUtils {
+
+  /* 
+   * Uses a suffix indicating multiples of 1024 (K), 
+   * 1024*1024 (M), and 1024*1024*1024 (G).  For example, 
+   * 8500 would be converted to 8.3K, 133456345 to 
+   * 127M, 56990456345 to 53G, and so on.  Numbers 
+   * smaller than 1024 aren't modified.
+   *
+   * @param bytes The number of bytes.
+   * @return A text representation of the number of bytes,
+   *     abbreviated for larger quantities.
+   */
+  public static String humanReadableSize(double bytes)
+  {
+    String suffix;
+      
+    if( bytes >= 1024 * 1024 * 1024 )
+    {
+      bytes /= (1024 * 1024 * 1024);
+      suffix = "G";
+    }
+    else if( bytes >= 1024 * 1024 )
+    {
+      bytes /= (1024 * 1024);
+      suffix = "M";
+    }
+    else if( bytes >= 1024 )
+    {
+      bytes /= 1024;
+      suffix = "K";
+    }
+    else
+    {
+      suffix = "";
+    }
+    int frac = (bytes >= 10  ||  bytes == 0)  ?  0  :  1;
+    NumberFormat nf = NumberFormat.getInstance();
+    nf.setMinimumFractionDigits(frac);
+    nf.setMaximumFractionDigits(frac);
+    System.out.println(nf.getMinimumIntegerDigits());
+    nf.setGroupingUsed(false);
+    return nf.format(bytes) + suffix;
+  }
+
+}
+