| /* Copyright (C) 1998, 1999, 2000 Free Software Foundation |
| |
| This file is part of libgcj. |
| |
| This software is copyrighted work licensed under the terms of the |
| Libgcj License. Please consult the file "LIBGCJ_LICENSE" for |
| details. */ |
| |
| package java.text; |
| |
| import java.util.Locale; |
| import java.util.ResourceBundle; |
| import java.util.MissingResourceException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * @author Tom Tromey <tromey@cygnus.com> |
| * @date March 4, 1999 |
| */ |
| /* Written using "Java Class Libraries", 2nd edition, plus online |
| * API docs for JDK 1.2 from http://www.javasoft.com. |
| * Status: Believed complete and correct to 1.2, except getAvailableLocales. |
| */ |
| |
| public abstract class NumberFormat extends Format implements Cloneable |
| { |
| public static final int INTEGER_FIELD = 0; |
| public static final int FRACTION_FIELD = 1; |
| |
| public final String format (long number) |
| { |
| StringBuffer sbuf = new StringBuffer(50); |
| format (number, sbuf, null); |
| return sbuf.toString(); |
| } |
| |
| public final StringBuffer format (Object obj, StringBuffer sbuf, |
| FieldPosition pos) |
| { |
| if (obj instanceof Number) |
| return format(((Number) obj).doubleValue(), sbuf, pos); |
| else |
| throw new IllegalArgumentException |
| ("Cannot format given Object as a Number"); |
| } |
| |
| public abstract StringBuffer format (double number, |
| StringBuffer sbuf, FieldPosition pos); |
| |
| public abstract StringBuffer format (long number, |
| StringBuffer sbuf, FieldPosition pos); |
| |
| public Object clone () |
| { |
| // We know the superclass just uses Object's generic cloner. |
| // Why not just inherit? Because the online docs specify that |
| // this method exists for this class. |
| return super.clone (); |
| } |
| |
| public boolean equals (Object obj) |
| { |
| if (! (obj instanceof NumberFormat)) |
| return false; |
| NumberFormat nf = (NumberFormat) obj; |
| return (groupingUsed == nf.groupingUsed |
| && maximumFractionDigits == nf.maximumFractionDigits |
| && maximumIntegerDigits == nf.maximumIntegerDigits |
| && minimumFractionDigits == nf.minimumFractionDigits |
| && minimumIntegerDigits == nf.minimumIntegerDigits |
| && parseIntegerOnly == nf.parseIntegerOnly); |
| } |
| |
| public static Locale[] getAvailableLocales () |
| { |
| // FIXME. |
| return null; |
| } |
| |
| private static final NumberFormat computeInstance (Locale loc, |
| String resource, |
| String def) |
| { |
| ResourceBundle res; |
| try |
| { |
| res = ResourceBundle.getBundle("gnu.gcj.text.LocaleData", loc); |
| } |
| catch (MissingResourceException x) |
| { |
| res = null; |
| } |
| String fmt; |
| try |
| { |
| fmt = res == null ? def : res.getString(resource); |
| } |
| catch (MissingResourceException x) |
| { |
| fmt = def; |
| } |
| DecimalFormatSymbols dfs = new DecimalFormatSymbols (loc); |
| return new DecimalFormat (fmt, dfs); |
| } |
| |
| public static final NumberFormat getCurrencyInstance () |
| { |
| return getCurrencyInstance (Locale.getDefault()); |
| } |
| |
| public static NumberFormat getCurrencyInstance (Locale loc) |
| { |
| return computeInstance (loc, "currencyFormat", "$#,##0.00;($#,##0.00)"); |
| } |
| |
| public static final NumberFormat getInstance () |
| { |
| return getInstance (Locale.getDefault()); |
| } |
| |
| public static NumberFormat getInstance (Locale loc) |
| { |
| // For now always return a number instance. |
| return getNumberInstance (loc); |
| } |
| |
| public int getMaximumFractionDigits () |
| { |
| return maximumFractionDigits; |
| } |
| |
| public int getMaximumIntegerDigits () |
| { |
| return maximumIntegerDigits; |
| } |
| |
| public int getMinimumFractionDigits () |
| { |
| return minimumFractionDigits; |
| } |
| |
| public int getMinimumIntegerDigits () |
| { |
| return minimumIntegerDigits; |
| } |
| |
| public static final NumberFormat getNumberInstance () |
| { |
| return getNumberInstance (Locale.getDefault()); |
| } |
| |
| public static NumberFormat getNumberInstance (Locale loc) |
| { |
| return computeInstance (loc, "numberFormat", "#,##0.###"); |
| } |
| |
| public static final NumberFormat getPercentInstance () |
| { |
| return getPercentInstance (Locale.getDefault()); |
| } |
| |
| public static NumberFormat getPercentInstance (Locale loc) |
| { |
| return computeInstance (loc, "percentFormat", "#,##0%"); |
| } |
| |
| public int hashCode () |
| { |
| int hash = super.hashCode(); |
| hash ^= (maximumFractionDigits + maximumIntegerDigits |
| + minimumFractionDigits + minimumIntegerDigits); |
| if (groupingUsed) |
| hash ^= 0xf0f0; |
| if (parseIntegerOnly) |
| hash ^= 0x0f0f; |
| return hash; |
| } |
| |
| public boolean isGroupingUsed () |
| { |
| return groupingUsed; |
| } |
| |
| public boolean isParseIntegerOnly () |
| { |
| return parseIntegerOnly; |
| } |
| |
| public NumberFormat () |
| { |
| } |
| |
| public abstract Number parse (String sourceStr, ParsePosition pos); |
| |
| public Number parse (String sourceStr) throws ParseException |
| { |
| ParsePosition pp = new ParsePosition (0); |
| Number r = parse (sourceStr, pp); |
| if (r == null) |
| { |
| int index = pp.getErrorIndex(); |
| if (index < 0) |
| index = pp.getIndex(); |
| throw new ParseException ("couldn't parse number", index); |
| } |
| return r; |
| } |
| |
| public final Object parseObject (String sourceStr, ParsePosition pos) |
| { |
| return parse (sourceStr, pos); |
| } |
| |
| public void setGroupingUsed (boolean newValue) |
| { |
| groupingUsed = newValue; |
| } |
| |
| public void setMaximumFractionDigits (int newValue) |
| { |
| maximumFractionDigits = newValue; |
| } |
| |
| public void setMaximumIntegerDigits (int newValue) |
| { |
| maximumIntegerDigits = newValue; |
| } |
| |
| public void setMinimumFractionDigits (int newValue) |
| { |
| minimumFractionDigits = newValue; |
| } |
| |
| public void setMinimumIntegerDigits (int newValue) |
| { |
| minimumIntegerDigits = newValue; |
| } |
| |
| public void setParseIntegerOnly (boolean value) |
| { |
| parseIntegerOnly = value; |
| } |
| |
| public final String format (double number) |
| { |
| StringBuffer sbuf = new StringBuffer(50); |
| format (number, sbuf, null); |
| return sbuf.toString(); |
| } |
| |
| // These field names are fixed by the serialization spec. |
| boolean groupingUsed; |
| int maximumFractionDigits; |
| private byte maxFractionDigits; |
| int maximumIntegerDigits; |
| private byte maxIntegerDigits; |
| int minimumFractionDigits; |
| private byte minFractionDigits; |
| int minimumIntegerDigits; |
| private byte minIntegerDigits; |
| boolean parseIntegerOnly; |
| private int serialVersionOnStream; |
| private static final long serialVersionUID = -2308460125733713944L; |
| |
| private void readObject(ObjectInputStream stream) |
| throws IOException, ClassNotFoundException |
| { |
| stream.defaultReadObject(); |
| if (serialVersionOnStream < 1) |
| { |
| maximumFractionDigits = maxFractionDigits; |
| maximumIntegerDigits = maxIntegerDigits; |
| minimumFractionDigits = minFractionDigits; |
| minimumIntegerDigits = minIntegerDigits; |
| serialVersionOnStream = 1; |
| } |
| } |
| |
| private void writeObject(ObjectOutputStream stream) throws IOException |
| { |
| maxFractionDigits = maximumFractionDigits < Byte.MAX_VALUE ? |
| (byte) maximumFractionDigits : Byte.MAX_VALUE; |
| maxIntegerDigits = maximumIntegerDigits < Byte.MAX_VALUE ? |
| (byte) maximumIntegerDigits : Byte.MAX_VALUE; |
| minFractionDigits = minimumFractionDigits < Byte.MAX_VALUE ? |
| (byte) minimumFractionDigits : Byte.MAX_VALUE; |
| minIntegerDigits = minimumIntegerDigits < Byte.MAX_VALUE ? |
| (byte) minimumIntegerDigits : Byte.MAX_VALUE; |
| serialVersionOnStream = 1; |
| stream.defaultWriteObject(); |
| } |
| } |