com.darwinsys.util
Class ScaledNumberFormat
java.lang.Object
java.text.Format
com.darwinsys.util.ScaledNumberFormat
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable
public class ScaledNumberFormat
- extends java.text.Format
Format numbers scaled for human comprehension.
"Human-readable" output uses43 digits max, and puts unit suffixes at the end.
Makes output compact and easy-to-read esp. on huge disks. Formatting code was
originally in OpenBSD "df", converted to library routine. Scanning code
written by Ian Darwin, originally for OpenBSD libutil.
Rewritten in Java in January, 2001; re-synched with OpenBSD in 2004.
- Version:
- $Id: ScaledNumberFormat.java,v 1.10 2006/10/11 04:09:22 ian Exp $
- Author:
- Ian F. Darwin, http://www.darwinsys.com/
- See Also:
- Serialized Form
Nested classes/interfaces inherited from class java.text.Format |
java.text.Format.Field |
Method Summary |
java.lang.String |
format(double n)
Non-standard overload:
Format a double as a Scaled Numeral; just truncate to a long, and call
format(long). |
java.lang.String |
format(long number)
Non-standard overload;
Format a given long as a Scaled Numeral. |
java.lang.StringBuffer |
format(java.lang.Object on,
java.lang.StringBuffer sb,
java.text.FieldPosition fp)
|
java.lang.Object |
parseObject(java.lang.String arg0)
|
java.lang.Object |
parseObject(java.lang.String s,
java.text.ParsePosition where)
Parse a String expected to contain a number in Human Scaled Form. |
Methods inherited from class java.text.Format |
clone, format, formatToCharacterIterator |
Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ScaledNumberFormat
public ScaledNumberFormat()
parseObject
public java.lang.Object parseObject(java.lang.String s,
java.text.ParsePosition where)
- Parse a String expected to contain a number in Human Scaled Form.
- Specified by:
parseObject
in class java.text.Format
- Parameters:
s
- -
String to be parsed.where
- Ignored - required by API
- Returns:
- a Long containing the value (value is always integral, even
though has a fractional part before scaling).
parseObject
public java.lang.Object parseObject(java.lang.String arg0)
throws java.text.ParseException
- Overrides:
parseObject
in class java.text.Format
- Throws:
java.text.ParseException
format
public java.lang.StringBuffer format(java.lang.Object on,
java.lang.StringBuffer sb,
java.text.FieldPosition fp)
- Specified by:
format
in class java.text.Format
format
public java.lang.String format(double n)
- Non-standard overload:
Format a double as a Scaled Numeral; just truncate to a long, and call
format(long).
format
public java.lang.String format(long number)
- Non-standard overload;
Format a given long as a Scaled Numeral. This method is the REAL
FORMATTING ENGINE.
Copyright © 1996-2004 Ian F. Darwin. See license.html for usage license.