| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved |
| * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved |
| * |
| * The original version of this source code and documentation is copyrighted |
| * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These |
| * materials are provided under terms of a License Agreement between Taligent |
| * and Sun. This technology is protected by multiple US and International |
| * patents. This notice and attribution to Taligent may not be removed. |
| * Taligent is a registered trademark of Taligent, Inc. |
| * |
| */ |
| |
| package java.text; |
| |
| import java.io.InvalidObjectException; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.math.BigInteger; |
| import java.math.RoundingMode; |
| import java.util.Currency; |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicLong; |
| import libcore.icu.ICU; |
| import libcore.icu.LocaleData; |
| |
| /** |
| * <code>NumberFormat</code> is the abstract base class for all number |
| * formats. This class provides the interface for formatting and parsing |
| * numbers. <code>NumberFormat</code> also provides methods for determining |
| * which locales have number formats, and what their names are. |
| * |
| * <p> |
| * <code>NumberFormat</code> helps you to format and parse numbers for any locale. |
| * Your code can be completely independent of the locale conventions for |
| * decimal points, thousands-separators, or even the particular decimal |
| * digits used, or whether the number format is even decimal. |
| * |
| * <p> |
| * To format a number for the current Locale, use one of the factory |
| * class methods: |
| * <blockquote> |
| * <pre>{@code |
| * myString = NumberFormat.getInstance().format(myNumber); |
| * }</pre> |
| * </blockquote> |
| * If you are formatting multiple numbers, it is |
| * more efficient to get the format and use it multiple times so that |
| * the system doesn't have to fetch the information about the local |
| * language and country conventions multiple times. |
| * <blockquote> |
| * <pre>{@code |
| * NumberFormat nf = NumberFormat.getInstance(); |
| * for (int i = 0; i < myNumber.length; ++i) { |
| * output.println(nf.format(myNumber[i]) + "; "); |
| * } |
| * }</pre> |
| * </blockquote> |
| * To format a number for a different Locale, specify it in the |
| * call to <code>getInstance</code>. |
| * <blockquote> |
| * <pre>{@code |
| * NumberFormat nf = NumberFormat.getInstance(Locale.FRENCH); |
| * }</pre> |
| * </blockquote> |
| * You can also use a <code>NumberFormat</code> to parse numbers: |
| * <blockquote> |
| * <pre>{@code |
| * myNumber = nf.parse(myString); |
| * }</pre> |
| * </blockquote> |
| * Use <code>getInstance</code> or <code>getNumberInstance</code> to get the |
| * normal number format. Use <code>getIntegerInstance</code> to get an |
| * integer number format. Use <code>getCurrencyInstance</code> to get the |
| * currency number format. And use <code>getPercentInstance</code> to get a |
| * format for displaying percentages. With this format, a fraction like |
| * 0.53 is displayed as 53%. |
| * |
| * <p> |
| * You can also control the display of numbers with such methods as |
| * <code>setMinimumFractionDigits</code>. |
| * If you want even more control over the format or parsing, |
| * or want to give your users more control, |
| * you can try casting the <code>NumberFormat</code> you get from the factory methods |
| * to a <code>DecimalFormat</code>. This will work for the vast majority |
| * of locales; just remember to put it in a <code>try</code> block in case you |
| * encounter an unusual one. |
| * |
| * <p> |
| * NumberFormat and DecimalFormat are designed such that some controls |
| * work for formatting and others work for parsing. The following is |
| * the detailed description for each these control methods, |
| * <p> |
| * setParseIntegerOnly : only affects parsing, e.g. |
| * if true, "3456.78" → 3456 (and leaves the parse position just after index 6) |
| * if false, "3456.78" → 3456.78 (and leaves the parse position just after index 8) |
| * This is independent of formatting. If you want to not show a decimal point |
| * where there might be no digits after the decimal point, use |
| * setDecimalSeparatorAlwaysShown. |
| * <p> |
| * setDecimalSeparatorAlwaysShown : only affects formatting, and only where |
| * there might be no digits after the decimal point, such as with a pattern |
| * like "#,##0.##", e.g., |
| * if true, 3456.00 → "3,456." |
| * if false, 3456.00 → "3456" |
| * This is independent of parsing. If you want parsing to stop at the decimal |
| * point, use setParseIntegerOnly. |
| * |
| * <p> |
| * You can also use forms of the <code>parse</code> and <code>format</code> |
| * methods with <code>ParsePosition</code> and <code>FieldPosition</code> to |
| * allow you to: |
| * <ul> |
| * <li> progressively parse through pieces of a string |
| * <li> align the decimal point and other areas |
| * </ul> |
| * For example, you can align numbers in two ways: |
| * <ol> |
| * <li> If you are using a monospaced font with spacing for alignment, |
| * you can pass the <code>FieldPosition</code> in your format call, with |
| * <code>field</code> = <code>INTEGER_FIELD</code>. On output, |
| * <code>getEndIndex</code> will be set to the offset between the |
| * last character of the integer and the decimal. Add |
| * (desiredSpaceCount - getEndIndex) spaces at the front of the string. |
| * |
| * <li> If you are using proportional fonts, |
| * instead of padding with spaces, measure the width |
| * of the string in pixels from the start to <code>getEndIndex</code>. |
| * Then move the pen by |
| * (desiredPixelWidth - widthToAlignmentPoint) before drawing the text. |
| * It also works where there is no decimal, but possibly additional |
| * characters at the end, e.g., with parentheses in negative |
| * numbers: "(12)" for -12. |
| * </ol> |
| * |
| * <h3><a name="synchronization">Synchronization</a></h3> |
| * |
| * <p> |
| * Number formats are generally not synchronized. |
| * It is recommended to create separate format instances for each thread. |
| * If multiple threads access a format concurrently, it must be synchronized |
| * externally. |
| * |
| * @see DecimalFormat |
| * @see ChoiceFormat |
| * @author Mark Davis |
| * @author Helena Shih |
| */ |
| public abstract class NumberFormat extends Format { |
| |
| /** |
| * Field constant used to construct a FieldPosition object. Signifies that |
| * the position of the integer part of a formatted number should be returned. |
| * @see java.text.FieldPosition |
| */ |
| public static final int INTEGER_FIELD = 0; |
| |
| /** |
| * Field constant used to construct a FieldPosition object. Signifies that |
| * the position of the fraction part of a formatted number should be returned. |
| * @see java.text.FieldPosition |
| */ |
| public static final int FRACTION_FIELD = 1; |
| |
| /** |
| * Sole constructor. (For invocation by subclass constructors, typically |
| * implicit.) |
| */ |
| protected NumberFormat() { |
| } |
| |
| /** |
| * Formats a number and appends the resulting text to the given string |
| * buffer. |
| * The number can be of any subclass of {@link java.lang.Number}. |
| * <p> |
| * This implementation extracts the number's value using |
| * {@link java.lang.Number#longValue()} for all integral type values that |
| * can be converted to <code>long</code> without loss of information, |
| * including <code>BigInteger</code> values with a |
| * {@link java.math.BigInteger#bitLength() bit length} of less than 64, |
| * and {@link java.lang.Number#doubleValue()} for all other types. It |
| * then calls |
| * {@link #format(long,java.lang.StringBuffer,java.text.FieldPosition)} |
| * or {@link #format(double,java.lang.StringBuffer,java.text.FieldPosition)}. |
| * This may result in loss of magnitude information and precision for |
| * <code>BigInteger</code> and <code>BigDecimal</code> values. |
| * @param number the number to format |
| * @param toAppendTo the <code>StringBuffer</code> to which the formatted |
| * text is to be appended |
| * @param pos On input: an alignment field, if desired. |
| * On output: the offsets of the alignment field. |
| * @return the value passed in as <code>toAppendTo</code> |
| * @exception IllegalArgumentException if <code>number</code> is |
| * null or not an instance of <code>Number</code>. |
| * @exception NullPointerException if <code>toAppendTo</code> or |
| * <code>pos</code> is null |
| * @exception ArithmeticException if rounding is needed with rounding |
| * mode being set to RoundingMode.UNNECESSARY |
| * @see java.text.FieldPosition |
| */ |
| @Override |
| public StringBuffer format(Object number, |
| StringBuffer toAppendTo, |
| FieldPosition pos) { |
| if (number instanceof Long || number instanceof Integer || |
| number instanceof Short || number instanceof Byte || |
| number instanceof AtomicInteger || number instanceof AtomicLong || |
| (number instanceof BigInteger && |
| ((BigInteger)number).bitLength() < 64)) { |
| return format(((Number)number).longValue(), toAppendTo, pos); |
| } else if (number instanceof Number) { |
| return format(((Number)number).doubleValue(), toAppendTo, pos); |
| } else { |
| throw new IllegalArgumentException("Cannot format given Object as a Number"); |
| } |
| } |
| |
| /** |
| * Parses text from a string to produce a <code>Number</code>. |
| * <p> |
| * The method attempts to parse text starting at the index given by |
| * <code>pos</code>. |
| * If parsing succeeds, then the index of <code>pos</code> is updated |
| * to the index after the last character used (parsing does not necessarily |
| * use all characters up to the end of the string), and the parsed |
| * number is returned. The updated <code>pos</code> can be used to |
| * indicate the starting point for the next call to this method. |
| * If an error occurs, then the index of <code>pos</code> is not |
| * changed, the error index of <code>pos</code> is set to the index of |
| * the character where the error occurred, and null is returned. |
| * <p> |
| * See the {@link #parse(String, ParsePosition)} method for more information |
| * on number parsing. |
| * |
| * @param source A <code>String</code>, part of which should be parsed. |
| * @param pos A <code>ParsePosition</code> object with index and error |
| * index information as described above. |
| * @return A <code>Number</code> parsed from the string. In case of |
| * error, returns null. |
| * @exception NullPointerException if <code>pos</code> is null. |
| */ |
| @Override |
| public final Object parseObject(String source, ParsePosition pos) { |
| return parse(source, pos); |
| } |
| |
| /** |
| * Specialization of format. |
| * |
| * @param number the double number to format |
| * @return the formatted String |
| * @exception ArithmeticException if rounding is needed with rounding |
| * mode being set to RoundingMode.UNNECESSARY |
| * @see java.text.Format#format |
| */ |
| public final String format(double number) { |
| // Android-removed: fast-path code. |
| return format(number, new StringBuffer(), |
| DontCareFieldPosition.INSTANCE).toString(); |
| } |
| |
| // Android-removed: fastFormat method. |
| |
| /** |
| * Specialization of format. |
| * |
| * @param number the long number to format |
| * @return the formatted String |
| * @exception ArithmeticException if rounding is needed with rounding |
| * mode being set to RoundingMode.UNNECESSARY |
| * @see java.text.Format#format |
| */ |
| public final String format(long number) { |
| return format(number, new StringBuffer(), |
| DontCareFieldPosition.INSTANCE).toString(); |
| } |
| |
| /** |
| * Specialization of format. |
| * |
| * @param number the double number to format |
| * @param toAppendTo the StringBuffer to which the formatted text is to be |
| * appended |
| * @param pos the field position |
| * @return the formatted StringBuffer |
| * @exception ArithmeticException if rounding is needed with rounding |
| * mode being set to RoundingMode.UNNECESSARY |
| * @see java.text.Format#format |
| */ |
| public abstract StringBuffer format(double number, |
| StringBuffer toAppendTo, |
| FieldPosition pos); |
| |
| /** |
| * Specialization of format. |
| * |
| * @param number the long number to format |
| * @param toAppendTo the StringBuffer to which the formatted text is to be |
| * appended |
| * @param pos the field position |
| * @return the formatted StringBuffer |
| * @exception ArithmeticException if rounding is needed with rounding |
| * mode being set to RoundingMode.UNNECESSARY |
| * @see java.text.Format#format |
| */ |
| public abstract StringBuffer format(long number, |
| StringBuffer toAppendTo, |
| FieldPosition pos); |
| |
| /** |
| * Returns a Long if possible (e.g., within the range [Long.MIN_VALUE, |
| * Long.MAX_VALUE] and with no decimals), otherwise a Double. |
| * If IntegerOnly is set, will stop at a decimal |
| * point (or equivalent; e.g., for rational numbers "1 2/3", will stop |
| * after the 1). |
| * Does not throw an exception; if no object can be parsed, index is |
| * unchanged! |
| * |
| * @param source the String to parse |
| * @param parsePosition the parse position |
| * @return the parsed value |
| * @see java.text.NumberFormat#isParseIntegerOnly |
| * @see java.text.Format#parseObject |
| */ |
| public abstract Number parse(String source, ParsePosition parsePosition); |
| |
| /** |
| * Parses text from the beginning of the given string to produce a number. |
| * The method may not use the entire text of the given string. |
| * <p> |
| * See the {@link #parse(String, ParsePosition)} method for more information |
| * on number parsing. |
| * |
| * @param source A <code>String</code> whose beginning should be parsed. |
| * @return A <code>Number</code> parsed from the string. |
| * @exception ParseException if the beginning of the specified string |
| * cannot be parsed. |
| */ |
| public Number parse(String source) throws ParseException { |
| ParsePosition parsePosition = new ParsePosition(0); |
| Number result = parse(source, parsePosition); |
| if (parsePosition.index == 0) { |
| throw new ParseException("Unparseable number: \"" + source + "\"", |
| parsePosition.errorIndex); |
| } |
| return result; |
| } |
| |
| /** |
| * Returns true if this format will parse numbers as integers only. |
| * For example in the English locale, with ParseIntegerOnly true, the |
| * string "1234." would be parsed as the integer value 1234 and parsing |
| * would stop at the "." character. Of course, the exact format accepted |
| * by the parse operation is locale dependant and determined by sub-classes |
| * of NumberFormat. |
| * |
| * @return {@code true} if numbers should be parsed as integers only; |
| * {@code false} otherwise |
| */ |
| public boolean isParseIntegerOnly() { |
| return parseIntegerOnly; |
| } |
| |
| /** |
| * Sets whether or not numbers should be parsed as integers only. |
| * |
| * @param value {@code true} if numbers should be parsed as integers only; |
| * {@code false} otherwise |
| * @see #isParseIntegerOnly |
| */ |
| public void setParseIntegerOnly(boolean value) { |
| parseIntegerOnly = value; |
| } |
| |
| //============== Locale Stuff ===================== |
| |
| /** |
| * Returns a general-purpose number format for the current default |
| * {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
| * This is the same as calling |
| * {@link #getNumberInstance() getNumberInstance()}. |
| * |
| * @return the {@code NumberFormat} instance for general-purpose number |
| * formatting |
| */ |
| public final static NumberFormat getInstance() { |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the specified locale. |
| * This is the same as calling |
| * {@link #getNumberInstance(java.util.Locale) getNumberInstance(inLocale)}. |
| * |
| * @param inLocale the desired locale |
| * @return the {@code NumberFormat} instance for general-purpose number |
| * formatting |
| */ |
| public static NumberFormat getInstance(Locale inLocale) { |
| return getInstance(inLocale, NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the current default |
| * {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
| * <p>This is equivalent to calling |
| * {@link #getNumberInstance(Locale) |
| * getNumberInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
| * |
| * @return the {@code NumberFormat} instance for general-purpose number |
| * formatting |
| * @see java.util.Locale#getDefault(java.util.Locale.Category) |
| * @see java.util.Locale.Category#FORMAT |
| */ |
| public final static NumberFormat getNumberInstance() { |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT), NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns a general-purpose number format for the specified locale. |
| * |
| * @param inLocale the desired locale |
| * @return the {@code NumberFormat} instance for general-purpose number |
| * formatting |
| */ |
| public static NumberFormat getNumberInstance(Locale inLocale) { |
| return getInstance(inLocale, NUMBERSTYLE); |
| } |
| |
| /** |
| * Returns an integer number format for the current default |
| * {@link java.util.Locale.Category#FORMAT FORMAT} locale. The |
| * returned number format is configured to round floating point numbers |
| * to the nearest integer using half-even rounding (see {@link |
| * java.math.RoundingMode#HALF_EVEN RoundingMode.HALF_EVEN}) for formatting, |
| * and to parse only the integer part of an input string (see {@link |
| * #isParseIntegerOnly isParseIntegerOnly}). |
| * <p>This is equivalent to calling |
| * {@link #getIntegerInstance(Locale) |
| * getIntegerInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
| * |
| * @see #getRoundingMode() |
| * @see java.util.Locale#getDefault(java.util.Locale.Category) |
| * @see java.util.Locale.Category#FORMAT |
| * @return a number format for integer values |
| * @since 1.4 |
| */ |
| public final static NumberFormat getIntegerInstance() { |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT), INTEGERSTYLE); |
| } |
| |
| /** |
| * Returns an integer number format for the specified locale. The |
| * returned number format is configured to round floating point numbers |
| * to the nearest integer using half-even rounding (see {@link |
| * java.math.RoundingMode#HALF_EVEN RoundingMode.HALF_EVEN}) for formatting, |
| * and to parse only the integer part of an input string (see {@link |
| * #isParseIntegerOnly isParseIntegerOnly}). |
| * |
| * @param inLocale the desired locale |
| * @see #getRoundingMode() |
| * @return a number format for integer values |
| * @since 1.4 |
| */ |
| public static NumberFormat getIntegerInstance(Locale inLocale) { |
| return getInstance(inLocale, INTEGERSTYLE); |
| } |
| |
| /** |
| * Returns a currency format for the current default |
| * {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
| * <p>This is equivalent to calling |
| * {@link #getCurrencyInstance(Locale) |
| * getCurrencyInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
| * |
| * @return the {@code NumberFormat} instance for currency formatting |
| * @see java.util.Locale#getDefault(java.util.Locale.Category) |
| * @see java.util.Locale.Category#FORMAT |
| */ |
| public final static NumberFormat getCurrencyInstance() { |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT), CURRENCYSTYLE); |
| } |
| |
| /** |
| * Returns a currency format for the specified locale. |
| * |
| * @param inLocale the desired locale |
| * @return the {@code NumberFormat} instance for currency formatting |
| */ |
| public static NumberFormat getCurrencyInstance(Locale inLocale) { |
| return getInstance(inLocale, CURRENCYSTYLE); |
| } |
| |
| /** |
| * Returns a percentage format for the current default |
| * {@link java.util.Locale.Category#FORMAT FORMAT} locale. |
| * <p>This is equivalent to calling |
| * {@link #getPercentInstance(Locale) |
| * getPercentInstance(Locale.getDefault(Locale.Category.FORMAT))}. |
| * |
| * @return the {@code NumberFormat} instance for percentage formatting |
| * @see java.util.Locale#getDefault(java.util.Locale.Category) |
| * @see java.util.Locale.Category#FORMAT |
| */ |
| public final static NumberFormat getPercentInstance() { |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT), PERCENTSTYLE); |
| } |
| |
| /** |
| * Returns a percentage format for the specified locale. |
| * |
| * @param inLocale the desired locale |
| * @return the {@code NumberFormat} instance for percentage formatting |
| */ |
| public static NumberFormat getPercentInstance(Locale inLocale) { |
| return getInstance(inLocale, PERCENTSTYLE); |
| } |
| |
| // Android-removed: non-API methods getScientificInstance([Locale]). |
| |
| // Android-changed: Removed reference to NumberFormatProvider. |
| /** |
| * Returns an array of all locales for which the |
| * <code>get*Instance</code> methods of this class can return |
| * localized instances. |
| * |
| * @return An array of locales for which localized |
| * <code>NumberFormat</code> instances are available. |
| */ |
| public static Locale[] getAvailableLocales() { |
| // Android-changed: Removed used of NumberFormatProvider. Switched to use ICU. |
| return ICU.getAvailableLocales(); |
| } |
| |
| /** |
| * Overrides hashCode. |
| */ |
| @Override |
| public int hashCode() { |
| return maximumIntegerDigits * 37 + maxFractionDigits; |
| // just enough fields for a reasonable distribution |
| } |
| |
| /** |
| * Overrides equals. |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null) { |
| return false; |
| } |
| if (this == obj) { |
| return true; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| NumberFormat other = (NumberFormat) obj; |
| return (maximumIntegerDigits == other.maximumIntegerDigits |
| && minimumIntegerDigits == other.minimumIntegerDigits |
| && maximumFractionDigits == other.maximumFractionDigits |
| && minimumFractionDigits == other.minimumFractionDigits |
| && groupingUsed == other.groupingUsed |
| && parseIntegerOnly == other.parseIntegerOnly); |
| } |
| |
| /** |
| * Overrides Cloneable. |
| */ |
| @Override |
| public Object clone() { |
| NumberFormat other = (NumberFormat) super.clone(); |
| return other; |
| } |
| |
| /** |
| * Returns true if grouping is used in this format. For example, in the |
| * English locale, with grouping on, the number 1234567 might be formatted |
| * as "1,234,567". The grouping separator as well as the size of each group |
| * is locale dependant and is determined by sub-classes of NumberFormat. |
| * |
| * @return {@code true} if grouping is used; |
| * {@code false} otherwise |
| * @see #setGroupingUsed |
| */ |
| public boolean isGroupingUsed() { |
| return groupingUsed; |
| } |
| |
| /** |
| * Set whether or not grouping will be used in this format. |
| * |
| * @param newValue {@code true} if grouping is used; |
| * {@code false} otherwise |
| * @see #isGroupingUsed |
| */ |
| public void setGroupingUsed(boolean newValue) { |
| groupingUsed = newValue; |
| } |
| |
| /** |
| * Returns the maximum number of digits allowed in the integer portion of a |
| * number. |
| * |
| * @return the maximum number of digits |
| * @see #setMaximumIntegerDigits |
| */ |
| public int getMaximumIntegerDigits() { |
| return maximumIntegerDigits; |
| } |
| |
| /** |
| * Sets the maximum number of digits allowed in the integer portion of a |
| * number. maximumIntegerDigits must be ≥ minimumIntegerDigits. If the |
| * new value for maximumIntegerDigits is less than the current value |
| * of minimumIntegerDigits, then minimumIntegerDigits will also be set to |
| * the new value. |
| * |
| * @param newValue the maximum number of integer digits to be shown; if |
| * less than zero, then zero is used. The concrete subclass may enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMaximumIntegerDigits |
| */ |
| public void setMaximumIntegerDigits(int newValue) { |
| maximumIntegerDigits = Math.max(0,newValue); |
| if (minimumIntegerDigits > maximumIntegerDigits) { |
| minimumIntegerDigits = maximumIntegerDigits; |
| } |
| } |
| |
| /** |
| * Returns the minimum number of digits allowed in the integer portion of a |
| * number. |
| * |
| * @return the minimum number of digits |
| * @see #setMinimumIntegerDigits |
| */ |
| public int getMinimumIntegerDigits() { |
| return minimumIntegerDigits; |
| } |
| |
| /** |
| * Sets the minimum number of digits allowed in the integer portion of a |
| * number. minimumIntegerDigits must be ≤ maximumIntegerDigits. If the |
| * new value for minimumIntegerDigits exceeds the current value |
| * of maximumIntegerDigits, then maximumIntegerDigits will also be set to |
| * the new value |
| * |
| * @param newValue the minimum number of integer digits to be shown; if |
| * less than zero, then zero is used. The concrete subclass may enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMinimumIntegerDigits |
| */ |
| public void setMinimumIntegerDigits(int newValue) { |
| minimumIntegerDigits = Math.max(0,newValue); |
| if (minimumIntegerDigits > maximumIntegerDigits) { |
| maximumIntegerDigits = minimumIntegerDigits; |
| } |
| } |
| |
| /** |
| * Returns the maximum number of digits allowed in the fraction portion of a |
| * number. |
| * |
| * @return the maximum number of digits. |
| * @see #setMaximumFractionDigits |
| */ |
| public int getMaximumFractionDigits() { |
| return maximumFractionDigits; |
| } |
| |
| /** |
| * Sets the maximum number of digits allowed in the fraction portion of a |
| * number. maximumFractionDigits must be ≥ minimumFractionDigits. If the |
| * new value for maximumFractionDigits is less than the current value |
| * of minimumFractionDigits, then minimumFractionDigits will also be set to |
| * the new value. |
| * |
| * @param newValue the maximum number of fraction digits to be shown; if |
| * less than zero, then zero is used. The concrete subclass may enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMaximumFractionDigits |
| */ |
| public void setMaximumFractionDigits(int newValue) { |
| maximumFractionDigits = Math.max(0,newValue); |
| if (maximumFractionDigits < minimumFractionDigits) { |
| minimumFractionDigits = maximumFractionDigits; |
| } |
| } |
| |
| /** |
| * Returns the minimum number of digits allowed in the fraction portion of a |
| * number. |
| * |
| * @return the minimum number of digits |
| * @see #setMinimumFractionDigits |
| */ |
| public int getMinimumFractionDigits() { |
| return minimumFractionDigits; |
| } |
| |
| /** |
| * Sets the minimum number of digits allowed in the fraction portion of a |
| * number. minimumFractionDigits must be ≤ maximumFractionDigits. If the |
| * new value for minimumFractionDigits exceeds the current value |
| * of maximumFractionDigits, then maximumIntegerDigits will also be set to |
| * the new value |
| * |
| * @param newValue the minimum number of fraction digits to be shown; if |
| * less than zero, then zero is used. The concrete subclass may enforce an |
| * upper limit to this value appropriate to the numeric type being formatted. |
| * @see #getMinimumFractionDigits |
| */ |
| public void setMinimumFractionDigits(int newValue) { |
| minimumFractionDigits = Math.max(0,newValue); |
| if (maximumFractionDigits < minimumFractionDigits) { |
| maximumFractionDigits = minimumFractionDigits; |
| } |
| } |
| |
| /** |
| * Gets the currency used by this number format when formatting |
| * currency values. The initial value is derived in a locale dependent |
| * way. The returned value may be null if no valid |
| * currency could be determined and no currency has been set using |
| * {@link #setCurrency(java.util.Currency) setCurrency}. |
| * <p> |
| * The default implementation throws |
| * <code>UnsupportedOperationException</code>. |
| * |
| * @return the currency used by this number format, or <code>null</code> |
| * @exception UnsupportedOperationException if the number format class |
| * doesn't implement currency formatting |
| * @since 1.4 |
| */ |
| public Currency getCurrency() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Sets the currency used by this number format when formatting |
| * currency values. This does not update the minimum or maximum |
| * number of fraction digits used by the number format. |
| * <p> |
| * The default implementation throws |
| * <code>UnsupportedOperationException</code>. |
| * |
| * @param currency the new currency to be used by this number format |
| * @exception UnsupportedOperationException if the number format class |
| * doesn't implement currency formatting |
| * @exception NullPointerException if <code>currency</code> is null |
| * @since 1.4 |
| */ |
| public void setCurrency(Currency currency) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Gets the {@link java.math.RoundingMode} used in this NumberFormat. |
| * The default implementation of this method in NumberFormat |
| * always throws {@link java.lang.UnsupportedOperationException}. |
| * Subclasses which handle different rounding modes should override |
| * this method. |
| * |
| * @exception UnsupportedOperationException The default implementation |
| * always throws this exception |
| * @return The <code>RoundingMode</code> used for this NumberFormat. |
| * @see #setRoundingMode(RoundingMode) |
| * @since 1.6 |
| */ |
| public RoundingMode getRoundingMode() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Sets the {@link java.math.RoundingMode} used in this NumberFormat. |
| * The default implementation of this method in NumberFormat always |
| * throws {@link java.lang.UnsupportedOperationException}. |
| * Subclasses which handle different rounding modes should override |
| * this method. |
| * |
| * @exception UnsupportedOperationException The default implementation |
| * always throws this exception |
| * @exception NullPointerException if <code>roundingMode</code> is null |
| * @param roundingMode The <code>RoundingMode</code> to be used |
| * @see #getRoundingMode() |
| * @since 1.6 |
| */ |
| public void setRoundingMode(RoundingMode roundingMode) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| // =======================privates=============================== |
| |
| private static NumberFormat getInstance(Locale desiredLocale, |
| int choice) { |
| // BEGIN Android-changed: Removed use of NumberFormatProvider. Switched to use ICU. |
| /* |
| LocaleProviderAdapter adapter; |
| adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class, |
| desiredLocale); |
| NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice); |
| if (numberFormat == null) { |
| numberFormat = getInstance(LocaleProviderAdapter.forJRE(), |
| desiredLocale, choice); |
| */ |
| String[] numberPatterns = new String[3]; |
| LocaleData data = LocaleData.get(desiredLocale); |
| numberPatterns[NUMBERSTYLE] = data.numberPattern; |
| numberPatterns[CURRENCYSTYLE] = data.currencyPattern; |
| numberPatterns[PERCENTSTYLE] = data.percentPattern; |
| |
| // Note: the following lines are from NumberFormatProviderImpl upstream. |
| DecimalFormatSymbols symbols = DecimalFormatSymbols.getInstance(desiredLocale); |
| int entry = (choice == INTEGERSTYLE) ? NUMBERSTYLE : choice; |
| DecimalFormat numberFormat = new DecimalFormat(numberPatterns[entry], symbols); |
| |
| if (choice == INTEGERSTYLE) { |
| numberFormat.setMaximumFractionDigits(0); |
| numberFormat.setDecimalSeparatorAlwaysShown(false); |
| numberFormat.setParseIntegerOnly(true); |
| } else if (choice == CURRENCYSTYLE) { |
| numberFormat.adjustForCurrencyDefaultFractionDigits(); |
| } |
| // END Android-changed: Removed use of NumberFormatProvider. Switched to use ICU. |
| return numberFormat; |
| } |
| |
| /** |
| * First, read in the default serializable data. |
| * |
| * Then, if <code>serialVersionOnStream</code> is less than 1, indicating that |
| * the stream was written by JDK 1.1, |
| * set the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
| * to be equal to the <code>byte</code> fields such as <code>maxIntegerDigits</code>, |
| * since the <code>int</code> fields were not present in JDK 1.1. |
| * Finally, set serialVersionOnStream back to the maximum allowed value so that |
| * default serialization will work properly if this object is streamed out again. |
| * |
| * <p>If <code>minimumIntegerDigits</code> is greater than |
| * <code>maximumIntegerDigits</code> or <code>minimumFractionDigits</code> |
| * is greater than <code>maximumFractionDigits</code>, then the stream data |
| * is invalid and this method throws an <code>InvalidObjectException</code>. |
| * In addition, if any of these values is negative, then this method throws |
| * an <code>InvalidObjectException</code>. |
| * |
| * @since 1.2 |
| */ |
| private void readObject(ObjectInputStream stream) |
| throws IOException, ClassNotFoundException |
| { |
| stream.defaultReadObject(); |
| if (serialVersionOnStream < 1) { |
| // Didn't have additional int fields, reassign to use them. |
| maximumIntegerDigits = maxIntegerDigits; |
| minimumIntegerDigits = minIntegerDigits; |
| maximumFractionDigits = maxFractionDigits; |
| minimumFractionDigits = minFractionDigits; |
| } |
| if (minimumIntegerDigits > maximumIntegerDigits || |
| minimumFractionDigits > maximumFractionDigits || |
| minimumIntegerDigits < 0 || minimumFractionDigits < 0) { |
| throw new InvalidObjectException("Digit count range invalid"); |
| } |
| serialVersionOnStream = currentSerialVersion; |
| } |
| |
| /** |
| * Write out the default serializable data, after first setting |
| * the <code>byte</code> fields such as <code>maxIntegerDigits</code> to be |
| * equal to the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
| * (or to <code>Byte.MAX_VALUE</code>, whichever is smaller), for compatibility |
| * with the JDK 1.1 version of the stream format. |
| * |
| * @since 1.2 |
| */ |
| private void writeObject(ObjectOutputStream stream) |
| throws IOException |
| { |
| maxIntegerDigits = (maximumIntegerDigits > Byte.MAX_VALUE) ? |
| Byte.MAX_VALUE : (byte)maximumIntegerDigits; |
| minIntegerDigits = (minimumIntegerDigits > Byte.MAX_VALUE) ? |
| Byte.MAX_VALUE : (byte)minimumIntegerDigits; |
| maxFractionDigits = (maximumFractionDigits > Byte.MAX_VALUE) ? |
| Byte.MAX_VALUE : (byte)maximumFractionDigits; |
| minFractionDigits = (minimumFractionDigits > Byte.MAX_VALUE) ? |
| Byte.MAX_VALUE : (byte)minimumFractionDigits; |
| stream.defaultWriteObject(); |
| } |
| |
| // Constants used by factory methods to specify a style of format. |
| private static final int NUMBERSTYLE = 0; |
| private static final int CURRENCYSTYLE = 1; |
| private static final int PERCENTSTYLE = 2; |
| // Android-changed: changed: removed SCIENTIFICSTYLE and pull down INTEGERSTYLE value. |
| //private static final int SCIENTIFICSTYLE = 3; |
| private static final int INTEGERSTYLE = 3; |
| |
| /** |
| * True if the grouping (i.e. thousands) separator is used when |
| * formatting and parsing numbers. |
| * |
| * @serial |
| * @see #isGroupingUsed |
| */ |
| private boolean groupingUsed = true; |
| |
| /** |
| * The maximum number of digits allowed in the integer portion of a |
| * number. <code>maxIntegerDigits</code> must be greater than or equal to |
| * <code>minIntegerDigits</code>. |
| * <p> |
| * <strong>Note:</strong> This field exists only for serialization |
| * compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
| * <code>int</code> field <code>maximumIntegerDigits</code> is used instead. |
| * When writing to a stream, <code>maxIntegerDigits</code> is set to |
| * <code>maximumIntegerDigits</code> or <code>Byte.MAX_VALUE</code>, |
| * whichever is smaller. When reading from a stream, this field is used |
| * only if <code>serialVersionOnStream</code> is less than 1. |
| * |
| * @serial |
| * @see #getMaximumIntegerDigits |
| */ |
| private byte maxIntegerDigits = 40; |
| |
| /** |
| * The minimum number of digits allowed in the integer portion of a |
| * number. <code>minimumIntegerDigits</code> must be less than or equal to |
| * <code>maximumIntegerDigits</code>. |
| * <p> |
| * <strong>Note:</strong> This field exists only for serialization |
| * compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
| * <code>int</code> field <code>minimumIntegerDigits</code> is used instead. |
| * When writing to a stream, <code>minIntegerDigits</code> is set to |
| * <code>minimumIntegerDigits</code> or <code>Byte.MAX_VALUE</code>, |
| * whichever is smaller. When reading from a stream, this field is used |
| * only if <code>serialVersionOnStream</code> is less than 1. |
| * |
| * @serial |
| * @see #getMinimumIntegerDigits |
| */ |
| private byte minIntegerDigits = 1; |
| |
| /** |
| * The maximum number of digits allowed in the fractional portion of a |
| * number. <code>maximumFractionDigits</code> must be greater than or equal to |
| * <code>minimumFractionDigits</code>. |
| * <p> |
| * <strong>Note:</strong> This field exists only for serialization |
| * compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
| * <code>int</code> field <code>maximumFractionDigits</code> is used instead. |
| * When writing to a stream, <code>maxFractionDigits</code> is set to |
| * <code>maximumFractionDigits</code> or <code>Byte.MAX_VALUE</code>, |
| * whichever is smaller. When reading from a stream, this field is used |
| * only if <code>serialVersionOnStream</code> is less than 1. |
| * |
| * @serial |
| * @see #getMaximumFractionDigits |
| */ |
| private byte maxFractionDigits = 3; // invariant, >= minFractionDigits |
| |
| /** |
| * The minimum number of digits allowed in the fractional portion of a |
| * number. <code>minimumFractionDigits</code> must be less than or equal to |
| * <code>maximumFractionDigits</code>. |
| * <p> |
| * <strong>Note:</strong> This field exists only for serialization |
| * compatibility with JDK 1.1. In Java platform 2 v1.2 and higher, the new |
| * <code>int</code> field <code>minimumFractionDigits</code> is used instead. |
| * When writing to a stream, <code>minFractionDigits</code> is set to |
| * <code>minimumFractionDigits</code> or <code>Byte.MAX_VALUE</code>, |
| * whichever is smaller. When reading from a stream, this field is used |
| * only if <code>serialVersionOnStream</code> is less than 1. |
| * |
| * @serial |
| * @see #getMinimumFractionDigits |
| */ |
| private byte minFractionDigits = 0; |
| |
| /** |
| * True if this format will parse numbers as integers only. |
| * |
| * @serial |
| * @see #isParseIntegerOnly |
| */ |
| private boolean parseIntegerOnly = false; |
| |
| // new fields for 1.2. byte is too small for integer digits. |
| |
| /** |
| * The maximum number of digits allowed in the integer portion of a |
| * number. <code>maximumIntegerDigits</code> must be greater than or equal to |
| * <code>minimumIntegerDigits</code>. |
| * |
| * @serial |
| * @since 1.2 |
| * @see #getMaximumIntegerDigits |
| */ |
| private int maximumIntegerDigits = 40; |
| |
| /** |
| * The minimum number of digits allowed in the integer portion of a |
| * number. <code>minimumIntegerDigits</code> must be less than or equal to |
| * <code>maximumIntegerDigits</code>. |
| * |
| * @serial |
| * @since 1.2 |
| * @see #getMinimumIntegerDigits |
| */ |
| private int minimumIntegerDigits = 1; |
| |
| /** |
| * The maximum number of digits allowed in the fractional portion of a |
| * number. <code>maximumFractionDigits</code> must be greater than or equal to |
| * <code>minimumFractionDigits</code>. |
| * |
| * @serial |
| * @since 1.2 |
| * @see #getMaximumFractionDigits |
| */ |
| private int maximumFractionDigits = 3; // invariant, >= minFractionDigits |
| |
| /** |
| * The minimum number of digits allowed in the fractional portion of a |
| * number. <code>minimumFractionDigits</code> must be less than or equal to |
| * <code>maximumFractionDigits</code>. |
| * |
| * @serial |
| * @since 1.2 |
| * @see #getMinimumFractionDigits |
| */ |
| private int minimumFractionDigits = 0; |
| |
| static final int currentSerialVersion = 1; |
| |
| /** |
| * Describes the version of <code>NumberFormat</code> present on the stream. |
| * Possible values are: |
| * <ul> |
| * <li><b>0</b> (or uninitialized): the JDK 1.1 version of the stream format. |
| * In this version, the <code>int</code> fields such as |
| * <code>maximumIntegerDigits</code> were not present, and the <code>byte</code> |
| * fields such as <code>maxIntegerDigits</code> are used instead. |
| * |
| * <li><b>1</b>: the 1.2 version of the stream format. The values of the |
| * <code>byte</code> fields such as <code>maxIntegerDigits</code> are ignored, |
| * and the <code>int</code> fields such as <code>maximumIntegerDigits</code> |
| * are used instead. |
| * </ul> |
| * When streaming out a <code>NumberFormat</code>, the most recent format |
| * (corresponding to the highest allowable <code>serialVersionOnStream</code>) |
| * is always written. |
| * |
| * @serial |
| * @since 1.2 |
| */ |
| private int serialVersionOnStream = currentSerialVersion; |
| |
| // Removed "implements Cloneable" clause. Needs to update serialization |
| // ID for backward compatibility. |
| static final long serialVersionUID = -2308460125733713944L; |
| |
| |
| // |
| // class for AttributedCharacterIterator attributes |
| // |
| /** |
| * Defines constants that are used as attribute keys in the |
| * <code>AttributedCharacterIterator</code> returned |
| * from <code>NumberFormat.formatToCharacterIterator</code> and as |
| * field identifiers in <code>FieldPosition</code>. |
| * |
| * @since 1.4 |
| */ |
| public static class Field extends Format.Field { |
| |
| // Proclaim serial compatibility with 1.4 FCS |
| private static final long serialVersionUID = 7494728892700160890L; |
| |
| // table of all instances in this class, used by readResolve |
| private static final Map<String, Field> instanceMap = new HashMap<>(11); |
| |
| /** |
| * Creates a Field instance with the specified |
| * name. |
| * |
| * @param name Name of the attribute |
| */ |
| protected Field(String name) { |
| super(name); |
| if (this.getClass() == NumberFormat.Field.class) { |
| instanceMap.put(name, this); |
| } |
| } |
| |
| /** |
| * Resolves instances being deserialized to the predefined constants. |
| * |
| * @throws InvalidObjectException if the constant could not be resolved. |
| * @return resolved NumberFormat.Field constant |
| */ |
| @Override |
| protected Object readResolve() throws InvalidObjectException { |
| if (this.getClass() != NumberFormat.Field.class) { |
| throw new InvalidObjectException("subclass didn't correctly implement readResolve"); |
| } |
| |
| Object instance = instanceMap.get(getName()); |
| if (instance != null) { |
| return instance; |
| } else { |
| throw new InvalidObjectException("unknown attribute name"); |
| } |
| } |
| |
| /** |
| * Constant identifying the integer field. |
| */ |
| public static final Field INTEGER = new Field("integer"); |
| |
| /** |
| * Constant identifying the fraction field. |
| */ |
| public static final Field FRACTION = new Field("fraction"); |
| |
| /** |
| * Constant identifying the exponent field. |
| */ |
| public static final Field EXPONENT = new Field("exponent"); |
| |
| /** |
| * Constant identifying the decimal separator field. |
| */ |
| public static final Field DECIMAL_SEPARATOR = |
| new Field("decimal separator"); |
| |
| /** |
| * Constant identifying the sign field. |
| */ |
| public static final Field SIGN = new Field("sign"); |
| |
| /** |
| * Constant identifying the grouping separator field. |
| */ |
| public static final Field GROUPING_SEPARATOR = |
| new Field("grouping separator"); |
| |
| /** |
| * Constant identifying the exponent symbol field. |
| */ |
| public static final Field EXPONENT_SYMBOL = new |
| Field("exponent symbol"); |
| |
| /** |
| * Constant identifying the percent field. |
| */ |
| public static final Field PERCENT = new Field("percent"); |
| |
| /** |
| * Constant identifying the permille field. |
| */ |
| public static final Field PERMILLE = new Field("per mille"); |
| |
| /** |
| * Constant identifying the currency field. |
| */ |
| public static final Field CURRENCY = new Field("currency"); |
| |
| /** |
| * Constant identifying the exponent sign field. |
| */ |
| public static final Field EXPONENT_SIGN = new Field("exponent sign"); |
| } |
| } |
