| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package java.util; |
| |
| import java.io.BufferedWriter; |
| import java.io.Closeable; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.Flushable; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintStream; |
| import java.io.UnsupportedEncodingException; |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| import java.math.MathContext; |
| import java.nio.charset.Charset; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.text.DateFormatSymbols; |
| import java.text.DecimalFormat; |
| import java.text.DecimalFormatSymbols; |
| import java.text.NumberFormat; |
| |
| // BEGIN android-added |
| import org.apache.harmony.luni.util.LocaleCache; |
| // END android-added |
| |
| /** |
| * Formats arguments according to a format string (like {@code printf} in C). |
| * <p> |
| * It's relatively rare to use a {@code Formatter} directly. A variety of classes offer convenience |
| * methods for accessing formatter functionality. |
| * Of these, {@link String#format} is generally the most useful. |
| * {@link java.io.PrintStream} and {@link java.io.PrintWriter} both offer |
| * {@code format} and {@code printf} methods. |
| * <p> |
| * <i>Format strings</i> consist of plain text interspersed with format specifiers, such |
| * as {@code "name: %s weight: %03dkg\n"}. Being a Java string, the usual Java string literal |
| * backslash escapes are of course available. |
| * <p> |
| * <i>Format specifiers</i> (such as {@code "%s"} or {@code "%03d"} in the example) start with a |
| * {@code %} and describe how to format their corresponding argument. It includes an optional |
| * argument index, optional flags, an optional width, an optional precision, and a mandatory |
| * conversion type. |
| * In the example, {@code "%s"} has no flags, no width, and no precision, while |
| * {@code "%03d"} has the flag {@code 0}, the width 3, and no precision. |
| * <p> |
| * Not all combinations of argument index, flags, width, precision, and conversion type |
| * are valid. |
| * <p> |
| * <i>Argument index</i>. Normally, each format specifier consumes the next argument to |
| * {@code format}. |
| * For convenient localization, it's possible to reorder arguments so that they appear in a |
| * different order in the output than the order in which they were supplied. |
| * For example, {@code "%4$s"} formats the fourth argument ({@code 4$}) as a string ({@code s}). |
| * It's also possible to reuse an argument with {@code <}. For example, |
| * {@code format("%o %<d %<x", 64)} results in {@code "100 64 40"}. |
| * <p> |
| * <i>Flags</i>. The available flags are: |
| * <p> |
| * <table BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TD COLSPAN=4> <B>Flags</B> </TD> </tr> |
| * <tr> |
| * <td width="5%">{@code ,}</td> |
| * <td width="25%">Use grouping separators for large numbers. (Decimal only.)</td> |
| * <td width="30%">{@code format("%,d", 1024);}</td> |
| * <td width="30%">{@code 1,234}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code +}</td> |
| * <td width="25%">Always show sign. (Decimal only.)</td> |
| * <td width="30%">{@code format("%+d, %+4d", 5, 5);}</td> |
| * <td width="30%"><pre>+5, +5</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code }</td> |
| * <td width="25%">A space indicates that non-negative numbers |
| * should have a leading space. (Decimal only.)</td> |
| * <td width="30%">{@code format("x% d% 5d", 4, 4);}</td> |
| * <td width="30%"><pre>x 4 4</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code (}</td> |
| * <td width="25%">Put parentheses around negative numbers. (Decimal only.)</td> |
| * <td width="30%">{@code format("%(d, %(d, %(6d", 12, -12, -12);}</td> |
| * <td width="30%"><pre>12, (12), (12)</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code -}</td> |
| * <td width="25%">Left-justify. (Requires width.)</td> |
| * <td width="30%">{@code format("%-6dx", 5);}<br/>{@code format("%-3C, %3C", 'd', 0x65);}</td> |
| * <td width="30%"><pre>5 x</pre><br/><pre>D , E</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code 0}</td> |
| * <td width="25%">Pad the number with leading zeros. (Requires width.)</td> |
| * <td width="30%">{@code format("%07d, %03d", 4, 5555);}</td> |
| * <td width="30%">{@code 0000004, 5555}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code #}</td> |
| * <td width="25%">Alternate form. (Octal and hex only.) </td> |
| * <td width="30%">{@code format("%o %#o", 010, 010);}<br/>{@code format("%x %#x", 0x12, 0x12);}</td> |
| * <td width="30%">{@code 10 010}<br/>{@code 12 0x12}</td> |
| * </tr> |
| * </table> |
| * <p> |
| * <i>Width</i>. The width is a decimal integer specifying the minimum number of characters to be |
| * used to represent the argument. If the result would otherwise be shorter than the width, padding |
| * will be added (the exact details of which depend on the flags). Note that you can't use width to |
| * truncate a field, only to make it wider: see precision for control over the maximum width. |
| * <p> |
| * <i>Precision</i>. The precision is a {@code .} followed by a decimal integer, giving the minimum |
| * number of digits for {@code d}, {@code o}, {@code x}, or {@code X}; the minimum number of digits |
| * after the decimal point for {@code a}, {@code A}, {@code e}, {@code E}, {@code f}, or {@code F}; |
| * the maximum number of significant digits for {@code g} or {@code G}; or the maximum number of |
| * characters for {@code s} or {@code S}. |
| * <p> |
| * <i>Conversion type</i>. One or two characters describing how to interpret the argument. Most |
| * conversions are a single character, but date/time conversions all start with {@code t} and |
| * have a single extra character describing the desired output. |
| * <p> |
| * Many conversion types have a corresponding uppercase variant that converts its result to |
| * uppercase using the rules of the relevant locale (either the default or the locale set for |
| * this formatter). |
| * <p> |
| * This table shows the available single-character (non-date/time) conversion types: |
| * <table BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>String conversions</B> |
| * <br> |
| * All types are acceptable arguments. Values of type {@link Formattable} have their |
| * {@code formatTo} method invoked; all other types use {@code toString}. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code s}</td> |
| * <td width="25%">String.</td> |
| * <td width="30%">{@code format("%s %s", "hello", "Hello");}</td> |
| * <td width="30%">{@code hello Hello}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code S}</td> |
| * <td width="25%">Uppercase string.</td> |
| * <td width="30%">{@code format("%S %S", "hello", "Hello");}</td> |
| * <td width="30%">{@code HELLO HELLO}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>Character conversions</B> |
| * <br> |
| * Byte, Character, Short, and Integer (and primitives that box to those types) are all acceptable |
| * as character arguments. Any other type is an error. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code c}</td> |
| * <td width="25%">Character.</td> |
| * <td width="30%">{@code format("%c %c", 'd', 'E');}</td> |
| * <td width="30%">{@code d E}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code C}</td> |
| * <td width="25%">Uppercase character.</td> |
| * <td width="30%">{@code format("%C %C", 'd', 'E');}</td> |
| * <td width="30%">{@code D E}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>Integer conversions</B> |
| * <br> |
| * Byte, Short, Integer, Long, and BigInteger (and primitives that box to those types) are all |
| * acceptable as integer arguments. Any other type is an error. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code d}</td> |
| * <td width="25%">Decimal.</td> |
| * <td width="30%">{@code format("%d", 26);}</td> |
| * <td width="30%">{@code 26}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code o}</td> |
| * <td width="25%">Octal.</td> |
| * <td width="30%">{@code format("%o", 032);}</td> |
| * <td width="30%">{@code 32}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code x}, {@code X}</td> |
| * <td width="25%">Hexadecimal.</td> |
| * <td width="30%">{@code format("%x %X", 0x1a, 0x1a);}</td> |
| * <td width="30%">{@code 1a 1A}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4><B>Floating-point conversions</B> |
| * <br> |
| * Float, Double, and BigDecimal (and primitives that box to those types) are all acceptable as |
| * floating-point arguments. Any other type is an error. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code f}</td> |
| * <td width="25%">Decimal floating point.</td> |
| * <td width="30%"><pre> |
| format("%f", 123.456f); |
| format("%.1f", 123.456f); |
| format("%1.5f", 123.456f); |
| format("%10f", 123.456f); |
| format("%6.0f", 123.456f);</td> |
| * <td width="30%" valign="top"><pre> |
| 123.456001 |
| 123.5 |
| 123.45600 |
| 123.456001 |
| 123</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code e}, {@code E}</td> |
| * <td width="25%">Engineering/exponential floating point.</td> |
| * <td width="30%"><pre> |
| format("%e", 123.456f); |
| format("%.1e", 123.456f); |
| format("%1.5E", 123.456f); |
| format("%10E", 123.456f); |
| format("%6.0E", 123.456f);</td> |
| * <td width="30%" valign="top"><pre> |
| 1.234560e+02 |
| 1.2e+02 |
| 1.23456E+02 |
| 1.234560E+02 |
| 1E+02</pre></td> |
| * </tr> |
| * <tr> |
| * <td width="5%" valign="top">{@code g}, {@code G}</td> |
| * <td width="25%" valign="top">Decimal or engineering, depending on the magnitude of the value.</td> |
| * <td width="30%" valign="top">{@code format("%g %g", 0.123, 0.0000123);}</td> |
| * <td width="30%" valign="top">{@code 0.123000 1.23000e-05}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code a}, {@code A}</td> |
| * <td width="25%">Hexadecimal floating point.</td> |
| * <td width="30%">{@code format("%a", 123.456f);}</td> |
| * <td width="30%">{@code 0x1.edd2f2p6}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>Boolean conversion</B> |
| * <br> |
| * Accepts Boolean values. {@code null} is considered false, and instances of all other |
| * types are considered true. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code b}, {@code B}</td> |
| * <td width="25%">Boolean.</td> |
| * <td width="30%">{@code format("%b %b", true, false);}<br>{@code format("%B %B", true, false);}<br>{@code format("%b", null);}<br>{@code format("%b", "hello");}</td> |
| * <td width="30%">{@code true false}<br>{@code TRUE FALSE}<br>{@code false}<br>{@code true}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>Hash code conversion</B> |
| * <br> |
| * Invokes {@code hashCode} on its argument, which may be of any type. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code h}, {@code H}</td> |
| * <td width="25%">Hexadecimal hash code.</td> |
| * <td width="30%">{@code format("%h", this);}<br>{@code format("%H", this);}<br>{@code format("%h", null);}</td> |
| * <td width="30%">{@code 190d11}<br>{@code 190D11}<br>{@code null}</td> |
| * </tr> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4> |
| * <B>Zero-argument conversions</B></TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code %}</td> |
| * <td width="25%">A literal % character.</td> |
| * <td width="30%">{@code format("%d%%", 50);}</td> |
| * <td width="30%">{@code 50%}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code n}</td> |
| * <td width="25%">Newline. (The value of the system property {@code "line.separator"}.)</td> |
| * <td width="30%">{@code format("first%nsecond");}</td> |
| * <td width="30%">{@code first\nsecond}</td> |
| * </tr> |
| * </table> |
| * <p> |
| * It's also possible to format dates and times with {@code Formatter}, though you should seriously |
| * consider using {@link java.text.SimpleDateFormat} via the factory methods in |
| * {@link java.text.DateFormat} instead. |
| * The facilities offered by {@code Formatter} are low-level and place the burden of localization |
| * on the developer. Using {@link java.text.DateFormat#getDateInstance}, |
| * {@link java.text.DateFormat#getTimeInstance}, and |
| * {@link java.text.DateFormat#getDateTimeInstance} is preferable for dates and times that will be |
| * presented to a human. Those methods will select the best format strings for the user's locale. |
| * <p> |
| * The best non-localized form is <a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a>, |
| * which you can get with {@code "%tF"} (2010-01-22), {@code "%tF %tR"} (2010-01-22 13:39), |
| * {@code "%tF %tT"} (2010-01-22 13:39:15), or {@code "%tF %tT%z"} (2010-01-22 13:39:15-0800). |
| * <p> |
| * As with the other conversions, date/time conversion has an uppercase format. Replacing |
| * {@code %t} with {@code %T} will uppercase the field according to the rules of the formatter's |
| * locale. |
| * <p> |
| * This table shows the date/time conversions: |
| * <table BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| * <TD COLSPAN=4><B>Date/time conversions</B> |
| * <br> |
| * Calendar, Date, and Long (representing milliseconds past the epoch) are all acceptable |
| * as date/time arguments. Any other type is an error. The epoch is 1970-01-01 00:00:00 UTC. |
| * </TD> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code ta}</td> |
| * <td width="25%">Localized weekday name (abbreviated).</td> |
| * <td width="30%">{@code format("%ta", cal, cal);}</td> |
| * <td width="30%">{@code Tue}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tA}</td> |
| * <td width="25%">Localized weekday name (full).</td> |
| * <td width="30%">{@code format("%tA", cal, cal);}</td> |
| * <td width="30%">{@code Tuesday}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tb}</td> |
| * <td width="25%">Localized month name (abbreviated).</td> |
| * <td width="30%">{@code format("%tb", cal);}</td> |
| * <td width="30%">{@code Apr}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tB}</td> |
| * <td width="25%">Localized month name (full).</td> |
| * <td width="30%">{@code format("%tB", cal);}</td> |
| * <td width="30%">{@code April}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tc}</td> |
| * <td width="25%">Locale-preferred date and time representation. (See {@link java.text.DateFormat} for more variations.)</td> |
| * <td width="30%">{@code format("%tc", cal);}</td> |
| * <td width="30%">{@code Tue Apr 01 16:19:17 CEST 2008}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tC}</td> |
| * <td width="25%">2-digit century.</td> |
| * <td width="30%">{@code format("%tC", cal);}</td> |
| * <td width="30%">{@code 20}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code td}</td> |
| * <td width="25%">2-digit day of month (01-31).</td> |
| * <td width="30%">{@code format("%td", cal);}</td> |
| * <td width="30%">{@code 01}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tD}</td> |
| * <td width="25%">Ambiguous US date format (MM/DD/YY). Do not use.</td> |
| * <td width="30%">{@code format("%tD", cal);}</td> |
| * <td width="30%">{@code 04/01/08}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code te}</td> |
| * <td width="25%">Day of month (1-31).</td> |
| * <td width="30%">{@code format("%te", cal);}</td> |
| * <td width="30%">{@code 1}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tF}</td> |
| * <td width="25%">Full date in ISO 8601 format (YYYY-MM-DD).</td> |
| * <td width="30%">{@code format("%tF", cal);}</td> |
| * <td width="30%">{@code 2008-04-01}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code th}</td> |
| * <td width="25%">Synonym for {@code %tb}.</td> |
| * <td width="30%"></td> |
| * <td width="30%"></td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tH}</td> |
| * <td width="25%">24-hour hour of day (00-23).</td> |
| * <td width="30%">{@code format("%tH", cal);}</td> |
| * <td width="30%">{@code 16}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tI}</td> |
| * <td width="25%">12-hour hour of day (01-12).</td> |
| * <td width="30%">{@code format("%tH", cal);}</td> |
| * <td width="30%">{@code 04}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tj}</td> |
| * <td width="25%">3-digit day of year (001-366).</td> |
| * <td width="30%">{@code format("%tj", cal);}</td> |
| * <td width="30%">{@code 092}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tk}</td> |
| * <td width="25%">24-hour hour of day (0-23).</td> |
| * <td width="30%">{@code format("%tH", cal);}</td> |
| * <td width="30%">{@code 16}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tl}</td> |
| * <td width="25%">12-hour hour of day (1-12).</td> |
| * <td width="30%">{@code format("%tH", cal);}</td> |
| * <td width="30%">{@code 4}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tL}</td> |
| * <td width="25%">Milliseconds.</td> |
| * <td width="30%">{@code format("%tL", cal);}</td> |
| * <td width="30%">{@code 359}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tm}</td> |
| * <td width="25%">2-digit month of year (01-12).</td> |
| * <td width="30%">{@code format("%tm", cal);}</td> |
| * <td width="30%">{@code 04}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tM}</td> |
| * <td width="25%">2-digit minute.</td> |
| * <td width="30%">{@code format("%tM", cal);}</td> |
| * <td width="30%">{@code 08}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tN}</td> |
| * <td width="25%">Nanoseconds.</td> |
| * <td width="30%">{@code format("%tN", cal);}</td> |
| * <td width="30%">{@code 359000000}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tp}</td> |
| * <td width="25%">a.m. or p.m.</td> |
| * <td width="30%">{@code format("%tp %Tp", cal, cal);}</td> |
| * <td width="30%">{@code pm PM}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tQ}</td> |
| * <td width="25%">Milliseconds since the epoch.</td> |
| * <td width="30%">{@code format("%tQ", cal);}</td> |
| * <td width="30%">{@code 1207059412656}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tr}</td> |
| * <td width="25%">Full 12-hour time ({@code %tI:%tM:%tS %Tp}).</td> |
| * <td width="30%">{@code format("%tr", cal);}</td> |
| * <td width="30%">{@code 04:15:32 PM}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tR}</td> |
| * <td width="25%">Short 24-hour time ({@code %tH:%tM}).</td> |
| * <td width="30%">{@code format("%tR", cal);}</td> |
| * <td width="30%">{@code 16:15}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code ts}</td> |
| * <td width="25%">Seconds since the epoch.</td> |
| * <td width="30%">{@code format("%ts", cal);}</td> |
| * <td width="30%">{@code 1207059412}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tS}</td> |
| * <td width="25%">2-digit seconds (00-60).</td> |
| * <td width="30%">{@code format("%tS", cal);}</td> |
| * <td width="30%">{@code 17}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tT}</td> |
| * <td width="25%">Full 24-hour time ({@code %tH:%tM:%tS}).</td> |
| * <td width="30%">{@code format("%tT", cal);}</td> |
| * <td width="30%">{@code 16:15:32}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code ty}</td> |
| * <td width="25%">2-digit year (00-99).</td> |
| * <td width="30%">{@code format("%ty", cal);}</td> |
| * <td width="30%">{@code 08}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tY}</td> |
| * <td width="25%">4-digit year.</td> |
| * <td width="30%">{@code format("%tY", cal);}</td> |
| * <td width="30%">{@code 2008}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tz}</td> |
| * <td width="25%">Time zone GMT offset.</td> |
| * <td width="30%">{@code format("%tz", cal);}</td> |
| * <td width="30%">{@code +0100}</td> |
| * </tr> |
| * <tr> |
| * <td width="5%">{@code tZ}</td> |
| * <td width="25%">Localized time zone abbreviation.</td> |
| * <td width="30%">{@code format("%tZ", cal);}</td> |
| * <td width="30%">{@code CEST}</td> |
| * </tr> |
| * </table> |
| * <p> |
| * Formatter is not thread-safe. |
| * |
| * @since 1.5 |
| * @see java.text.DateFormat |
| * @see Formattable |
| * @see java.text.SimpleDateFormat |
| */ |
| public final class Formatter implements Closeable, Flushable { |
| |
| /** |
| * The enumeration giving the available styles for formatting very large |
| * decimal numbers. |
| */ |
| public enum BigDecimalLayoutForm { |
| /** |
| * Use scientific style for BigDecimals. |
| */ |
| SCIENTIFIC, |
| /** |
| * Use normal decimal/float style for BigDecimals. |
| */ |
| DECIMAL_FLOAT |
| } |
| |
| private Appendable out; |
| |
| private Locale locale; |
| |
| private boolean closed = false; |
| |
| private IOException lastIOException; |
| |
| /** |
| * Constructs a {@code Formatter}. |
| * |
| * The output is written to a {@code StringBuilder} which can be acquired by invoking |
| * {@link #out()} and whose content can be obtained by calling |
| * {@code toString()}. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| */ |
| public Formatter() { |
| this(new StringBuilder(), Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output will be written to the |
| * specified {@code Appendable}. |
| * |
| * The locale for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param a |
| * the output destination of the {@code Formatter}. If {@code a} is {@code null}, |
| * then a {@code StringBuilder} will be used. |
| */ |
| public Formatter(Appendable a) { |
| this(a, Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the specified {@code Locale}. |
| * |
| * The output is written to a {@code StringBuilder} which can be acquired by invoking |
| * {@link #out()} and whose content can be obtained by calling |
| * {@code toString()}. |
| * |
| * @param l |
| * the {@code Locale} of the {@code Formatter}. If {@code l} is {@code null}, |
| * then no localization will be used. |
| */ |
| public Formatter(Locale l) { |
| this(new StringBuilder(), l); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the specified {@code Locale} |
| * and whose output will be written to the |
| * specified {@code Appendable}. |
| * |
| * @param a |
| * the output destination of the {@code Formatter}. If {@code a} is {@code null}, |
| * then a {@code StringBuilder} will be used. |
| * @param l |
| * the {@code Locale} of the {@code Formatter}. If {@code l} is {@code null}, |
| * then no localization will be used. |
| */ |
| public Formatter(Appendable a, Locale l) { |
| if (null == a) { |
| out = new StringBuilder(); |
| } else { |
| out = a; |
| } |
| locale = l; |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output is written to the specified file. |
| * |
| * The charset of the {@code Formatter} is the default charset. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param fileName |
| * the filename of the file that is used as the output |
| * destination for the {@code Formatter}. The file will be truncated to |
| * zero size if the file exists, or else a new file will be |
| * created. The output of the {@code Formatter} is buffered. |
| * @throws FileNotFoundException |
| * if the filename does not denote a normal and writable file, |
| * or if a new file cannot be created, or if any error arises when |
| * opening or creating the file. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the file in {@code checkWrite(file.getPath())}. |
| */ |
| public Formatter(String fileName) throws FileNotFoundException { |
| this(new File(fileName)); |
| |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output is written to the specified file. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param fileName |
| * the filename of the file that is used as the output |
| * destination for the {@code Formatter}. The file will be truncated to |
| * zero size if the file exists, or else a new file will be |
| * created. The output of the {@code Formatter} is buffered. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @throws FileNotFoundException |
| * if the filename does not denote a normal and writable file, |
| * or if a new file cannot be created, or if any error arises when |
| * opening or creating the file. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the file in {@code checkWrite(file.getPath())}. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(String fileName, String csn) throws FileNotFoundException, |
| UnsupportedEncodingException { |
| this(new File(fileName), csn); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the given {@code Locale} and charset, |
| * and whose output is written to the specified file. |
| * |
| * @param fileName |
| * the filename of the file that is used as the output |
| * destination for the {@code Formatter}. The file will be truncated to |
| * zero size if the file exists, or else a new file will be |
| * created. The output of the {@code Formatter} is buffered. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @param l |
| * the {@code Locale} of the {@code Formatter}. If {@code l} is {@code null}, |
| * then no localization will be used. |
| * @throws FileNotFoundException |
| * if the filename does not denote a normal and writable file, |
| * or if a new file cannot be created, or if any error arises when |
| * opening or creating the file. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the file in {@code checkWrite(file.getPath())}. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(String fileName, String csn, Locale l) |
| throws FileNotFoundException, UnsupportedEncodingException { |
| |
| this(new File(fileName), csn, l); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output is written to the specified {@code File}. |
| * |
| * The charset of the {@code Formatter} is the default charset. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param file |
| * the {@code File} that is used as the output destination for the |
| * {@code Formatter}. The {@code File} will be truncated to zero size if the {@code File} |
| * exists, or else a new {@code File} will be created. The output of the |
| * {@code Formatter} is buffered. |
| * @throws FileNotFoundException |
| * if the {@code File} is not a normal and writable {@code File}, or if a |
| * new {@code File} cannot be created, or if any error rises when opening or |
| * creating the {@code File}. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the {@code File} in {@code checkWrite(file.getPath())}. |
| */ |
| public Formatter(File file) throws FileNotFoundException { |
| this(new FileOutputStream(file)); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the given charset, |
| * and whose output is written to the specified {@code File}. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param file |
| * the {@code File} that is used as the output destination for the |
| * {@code Formatter}. The {@code File} will be truncated to zero size if the {@code File} |
| * exists, or else a new {@code File} will be created. The output of the |
| * {@code Formatter} is buffered. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @throws FileNotFoundException |
| * if the {@code File} is not a normal and writable {@code File}, or if a |
| * new {@code File} cannot be created, or if any error rises when opening or |
| * creating the {@code File}. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the {@code File} in {@code checkWrite(file.getPath())}. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(File file, String csn) throws FileNotFoundException, |
| UnsupportedEncodingException { |
| this(file, csn, Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the given {@code Locale} and charset, |
| * and whose output is written to the specified {@code File}. |
| * |
| * @param file |
| * the {@code File} that is used as the output destination for the |
| * {@code Formatter}. The {@code File} will be truncated to zero size if the {@code File} |
| * exists, or else a new {@code File} will be created. The output of the |
| * {@code Formatter} is buffered. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @param l |
| * the {@code Locale} of the {@code Formatter}. If {@code l} is {@code null}, |
| * then no localization will be used. |
| * @throws FileNotFoundException |
| * if the {@code File} is not a normal and writable {@code File}, or if a |
| * new {@code File} cannot be created, or if any error rises when opening or |
| * creating the {@code File}. |
| * @throws SecurityException |
| * if there is a {@code SecurityManager} in place which denies permission |
| * to write to the {@code File} in {@code checkWrite(file.getPath())}. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(File file, String csn, Locale l) |
| throws FileNotFoundException, UnsupportedEncodingException { |
| FileOutputStream fout = null; |
| try { |
| fout = new FileOutputStream(file); |
| OutputStreamWriter writer = new OutputStreamWriter(fout, csn); |
| // BEGIN android-changed |
| out = new BufferedWriter(writer, 8192); |
| // END android-changed |
| } catch (RuntimeException e) { |
| closeOutputStream(fout); |
| throw e; |
| } catch (UnsupportedEncodingException e) { |
| closeOutputStream(fout); |
| throw e; |
| } |
| |
| locale = l; |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output is written to the specified {@code OutputStream}. |
| * |
| * The charset of the {@code Formatter} is the default charset. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param os |
| * the stream to be used as the destination of the {@code Formatter}. |
| */ |
| public Formatter(OutputStream os) { |
| OutputStreamWriter writer = new OutputStreamWriter(os, Charset |
| .defaultCharset()); |
| // BEGIN android-changed |
| out = new BufferedWriter(writer, 8192); |
| // END android-changed |
| locale = Locale.getDefault(); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the given charset, |
| * and whose output is written to the specified {@code OutputStream}. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param os |
| * the stream to be used as the destination of the {@code Formatter}. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(OutputStream os, String csn) |
| throws UnsupportedEncodingException { |
| |
| this(os, csn, Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a {@code Formatter} with the given {@code Locale} and charset, |
| * and whose output is written to the specified {@code OutputStream}. |
| * |
| * @param os |
| * the stream to be used as the destination of the {@code Formatter}. |
| * @param csn |
| * the name of the charset for the {@code Formatter}. |
| * @param l |
| * the {@code Locale} of the {@code Formatter}. If {@code l} is {@code null}, |
| * then no localization will be used. |
| * @throws UnsupportedEncodingException |
| * if the charset with the specified name is not supported. |
| */ |
| public Formatter(OutputStream os, String csn, Locale l) |
| throws UnsupportedEncodingException { |
| |
| OutputStreamWriter writer = new OutputStreamWriter(os, csn); |
| // BEGIN android-changed |
| out = new BufferedWriter(writer, 8192); |
| // END android-changed |
| |
| locale = l; |
| } |
| |
| /** |
| * Constructs a {@code Formatter} whose output is written to the specified {@code PrintStream}. |
| * |
| * The charset of the {@code Formatter} is the default charset. |
| * |
| * The {@code Locale} for the {@code Formatter} is the default {@code Locale}. |
| * |
| * @param ps |
| * the {@code PrintStream} used as destination of the {@code Formatter}. If |
| * {@code ps} is {@code null}, then a {@code NullPointerException} will |
| * be raised. |
| */ |
| public Formatter(PrintStream ps) { |
| if (null == ps) { |
| throw new NullPointerException(); |
| } |
| out = ps; |
| locale = Locale.getDefault(); |
| } |
| |
| private void checkClosed() { |
| if (closed) { |
| throw new FormatterClosedException(); |
| } |
| } |
| |
| /** |
| * Returns the {@code Locale} of the {@code Formatter}. |
| * |
| * @return the {@code Locale} for the {@code Formatter} or {@code null} for no {@code Locale}. |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| public Locale locale() { |
| checkClosed(); |
| return locale; |
| } |
| |
| /** |
| * Returns the output destination of the {@code Formatter}. |
| * |
| * @return the output destination of the {@code Formatter}. |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| public Appendable out() { |
| checkClosed(); |
| return out; |
| } |
| |
| /** |
| * Returns the content by calling the {@code toString()} method of the output |
| * destination. |
| * |
| * @return the content by calling the {@code toString()} method of the output |
| * destination. |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| @Override |
| public String toString() { |
| checkClosed(); |
| return out.toString(); |
| } |
| |
| /** |
| * Flushes the {@code Formatter}. If the output destination is {@link Flushable}, |
| * then the method {@code flush()} will be called on that destination. |
| * |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| public void flush() { |
| checkClosed(); |
| if (out instanceof Flushable) { |
| try { |
| ((Flushable) out).flush(); |
| } catch (IOException e) { |
| lastIOException = e; |
| } |
| } |
| } |
| |
| /** |
| * Closes the {@code Formatter}. If the output destination is {@link Closeable}, |
| * then the method {@code close()} will be called on that destination. |
| * |
| * If the {@code Formatter} has been closed, then calling the this method will have no |
| * effect. |
| * |
| * Any method but the {@link #ioException()} that is called after the |
| * {@code Formatter} has been closed will raise a {@code FormatterClosedException}. |
| */ |
| public void close() { |
| if (!closed) { |
| closed = true; |
| try { |
| if (out instanceof Closeable) { |
| ((Closeable) out).close(); |
| } |
| } catch (IOException e) { |
| lastIOException = e; |
| } |
| } |
| } |
| |
| /** |
| * Returns the last {@code IOException} thrown by the {@code Formatter}'s output |
| * destination. If the {@code append()} method of the destination does not throw |
| * {@code IOException}s, the {@code ioException()} method will always return {@code null}. |
| * |
| * @return the last {@code IOException} thrown by the {@code Formatter}'s output |
| * destination. |
| */ |
| public IOException ioException() { |
| return lastIOException; |
| } |
| |
| /** |
| * Writes a formatted string to the output destination of the {@code Formatter}. |
| * |
| * @param format |
| * a format string. |
| * @param args |
| * the arguments list used in the {@code format()} method. If there are |
| * more arguments than those specified by the format string, then |
| * the additional arguments are ignored. |
| * @return this {@code Formatter}. |
| * @throws IllegalFormatException |
| * if the format string is illegal or incompatible with the |
| * arguments, or if fewer arguments are sent than those required by |
| * the format string, or any other illegal situation. |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| public Formatter format(String format, Object... args) { |
| // BEGIN android-changed |
| doFormat(format, args); |
| return this; |
| // END android-changed |
| } |
| |
| // BEGIN android-added |
| /** |
| * Cached transformer. Improves performance when format() is called multiple |
| * times. |
| */ |
| private Transformer transformer; |
| // END android-added |
| |
| /** |
| * Writes a formatted string to the output destination of the {@code Formatter}. |
| * |
| * @param l |
| * the {@code Locale} used in the method. If {@code locale} is |
| * {@code null}, then no localization will be applied. This |
| * parameter does not change this Formatter's default {@code Locale} |
| * as specified during construction, and only applies for the |
| * duration of this call. |
| * @param format |
| * a format string. |
| * @param args |
| * the arguments list used in the {@code format()} method. If there are |
| * more arguments than those specified by the format string, then |
| * the additional arguments are ignored. |
| * @return this {@code Formatter}. |
| * @throws IllegalFormatException |
| * if the format string is illegal or incompatible with the |
| * arguments, or if fewer arguments are sent than those required by |
| * the format string, or any other illegal situation. |
| * @throws FormatterClosedException |
| * if the {@code Formatter} has been closed. |
| */ |
| public Formatter format(Locale l, String format, Object... args) { |
| // BEGIN android-changed |
| Locale originalLocale = locale; |
| try { |
| this.locale = l; |
| doFormat(format, args); |
| } finally { |
| this.locale = originalLocale; |
| } |
| return this; |
| // END android-changed |
| } |
| |
| // BEGIN android-changed |
| private void doFormat(String format, Object... args) { |
| checkClosed(); |
| |
| // Reuse the previous transformer if the locale matches. |
| if (transformer == null || !transformer.locale.equals(locale)) { |
| transformer = new Transformer(this, locale); |
| } |
| |
| FormatSpecifierParser fsp = new FormatSpecifierParser(format); |
| |
| int currentObjectIndex = 0; |
| Object lastArgument = null; |
| boolean hasLastArgumentSet = false; |
| |
| int length = format.length(); |
| int i = 0; |
| while (i < length) { |
| // Find the maximal plain-text sequence... |
| int plainTextStart = i; |
| int nextPercent = format.indexOf('%', i); |
| int plainTextEnd = (nextPercent == -1) ? length : nextPercent; |
| // ...and output it. |
| if (plainTextEnd > plainTextStart) { |
| outputCharSequence(format, plainTextStart, plainTextEnd); |
| } |
| i = plainTextEnd; |
| // Do we have a format specifier? |
| if (i < length) { |
| FormatToken token = fsp.parseFormatToken(i + 1); |
| |
| Object argument = null; |
| if (token.requireArgument()) { |
| int index = token.getArgIndex() == FormatToken.UNSET ? currentObjectIndex++ : token.getArgIndex(); |
| argument = getArgument(args, index, fsp, lastArgument, hasLastArgumentSet); |
| lastArgument = argument; |
| hasLastArgumentSet = true; |
| } |
| |
| CharSequence substitution = transformer.transform(token, argument); |
| // The substitution is null if we called Formattable.formatTo. |
| if (substitution != null) { |
| outputCharSequence(substitution, 0, substitution.length()); |
| } |
| i = fsp.i; |
| } |
| } |
| } |
| // END android-changed |
| |
| // BEGIN android-added |
| // Fixes http://code.google.com/p/android/issues/detail?id=1767. |
| private void outputCharSequence(CharSequence cs, int start, int end) { |
| try { |
| out.append(cs, start, end); |
| } catch (IOException e) { |
| lastIOException = e; |
| } |
| } |
| // END android-added |
| |
| private Object getArgument(Object[] args, int index, FormatSpecifierParser fsp, |
| Object lastArgument, boolean hasLastArgumentSet) { |
| if (index == FormatToken.LAST_ARGUMENT_INDEX && !hasLastArgumentSet) { |
| throw new MissingFormatArgumentException("<"); //$NON-NLS-1$ |
| } |
| |
| if (null == args) { |
| return null; |
| } |
| |
| if (index >= args.length) { |
| throw new MissingFormatArgumentException(fsp.getFormatSpecifierText()); |
| } |
| |
| if (index == FormatToken.LAST_ARGUMENT_INDEX) { |
| return lastArgument; |
| } |
| |
| return args[index]; |
| } |
| |
| private static void closeOutputStream(OutputStream os) { |
| if (null == os) { |
| return; |
| } |
| try { |
| os.close(); |
| |
| } catch (IOException e) { |
| // silently |
| } |
| } |
| |
| /* |
| * Complete details of a single format specifier parsed from a format string. |
| */ |
| private static class FormatToken { |
| static final int LAST_ARGUMENT_INDEX = -2; |
| |
| static final int UNSET = -1; |
| |
| static final int FLAGS_UNSET = 0; |
| |
| static final int DEFAULT_PRECISION = 6; |
| |
| static final int FLAG_ZERO = 1 << 4; |
| |
| private int argIndex = UNSET; |
| |
| // These have package access for performance. They used to be represented by an int bitmask |
| // and accessed via methods, but Android's JIT doesn't yet do a good job of such code. |
| // Direct field access, on the other hand, is fast. |
| boolean flagAdd; |
| boolean flagComma; |
| boolean flagMinus; |
| boolean flagParenthesis; |
| boolean flagSharp; |
| boolean flagSpace; |
| boolean flagZero; |
| |
| private char conversionType = (char) UNSET; |
| private char dateSuffix; |
| |
| private int precision = UNSET; |
| private int width = UNSET; |
| |
| private StringBuilder strFlags; |
| |
| // Tests whether there were no flags, no width, and no precision specified. |
| boolean isDefault() { |
| // TODO: call hasDefaultFlags when the JIT can inline it. |
| return !flagAdd && !flagComma && !flagMinus && !flagParenthesis && !flagSharp && |
| !flagSpace && !flagZero && width == UNSET && precision == UNSET; |
| } |
| |
| boolean hasDefaultFlags() { |
| return !flagAdd && !flagComma && !flagMinus && !flagParenthesis && !flagSharp && |
| !flagSpace && !flagZero; |
| } |
| |
| boolean isPrecisionSet() { |
| return precision != UNSET; |
| } |
| |
| boolean isWidthSet() { |
| return width != UNSET; |
| } |
| |
| boolean hasArg() { |
| return argIndex != UNSET; |
| } |
| |
| int getArgIndex() { |
| return argIndex; |
| } |
| |
| void setArgIndex(int index) { |
| argIndex = index; |
| } |
| |
| int getWidth() { |
| return width; |
| } |
| |
| void setWidth(int width) { |
| this.width = width; |
| } |
| |
| int getPrecision() { |
| return precision; |
| } |
| |
| void setPrecision(int precise) { |
| this.precision = precise; |
| } |
| |
| String getStrFlags() { |
| return (strFlags != null) ? strFlags.toString() : ""; |
| } |
| |
| /* |
| * Sets qualified char as one of the flags. If the char is qualified, |
| * sets it as a flag and returns true. Or else returns false. |
| */ |
| boolean setFlag(int ch) { |
| boolean dupe = false; |
| switch (ch) { |
| case '+': |
| dupe = flagAdd; |
| flagAdd = true; |
| break; |
| case ',': |
| dupe = flagComma; |
| flagComma = true; |
| break; |
| case '-': |
| dupe = flagMinus; |
| flagMinus = true; |
| break; |
| case '(': |
| dupe = flagParenthesis; |
| flagParenthesis = true; |
| break; |
| case '#': |
| dupe = flagSharp; |
| flagSharp = true; |
| break; |
| case ' ': |
| dupe = flagSpace; |
| flagSpace = true; |
| break; |
| case '0': |
| dupe = flagZero; |
| flagZero = true; |
| break; |
| default: |
| return false; |
| } |
| if (dupe) { |
| throw new DuplicateFormatFlagsException(String.valueOf(ch)); |
| } |
| if (strFlags == null) { |
| strFlags = new StringBuilder(7); // There are seven possible flags. |
| } |
| strFlags.append(ch); |
| return true; |
| } |
| |
| char getConversionType() { |
| return conversionType; |
| } |
| |
| void setConversionType(char c) { |
| conversionType = c; |
| } |
| |
| char getDateSuffix() { |
| return dateSuffix; |
| } |
| |
| void setDateSuffix(char c) { |
| dateSuffix = c; |
| } |
| |
| boolean requireArgument() { |
| return conversionType != '%' && conversionType != 'n'; |
| } |
| |
| void checkMissingWidth() { |
| if (flagMinus && width == UNSET) { |
| throw new MissingFormatWidthException("-" + conversionType); |
| } |
| } |
| |
| void ensureOnlyMinus() { |
| if (flagAdd || flagComma || flagParenthesis || flagSharp || flagSpace || flagZero) { |
| throw new FormatFlagsConversionMismatchException(getStrFlags(), conversionType); |
| } |
| } |
| |
| void ensureNoPrecision() { |
| if (isPrecisionSet()) { |
| throw new IllegalFormatPrecisionException(precision); |
| } |
| } |
| } |
| |
| /* |
| * Transforms the argument to the formatted string according to the format |
| * information contained in the format token. |
| */ |
| private static class Transformer { |
| private Formatter formatter; |
| private FormatToken formatToken; |
| private Object arg; |
| private Locale locale; |
| private DecimalFormatSymbols decimalFormatSymbols; |
| private static String lineSeparator; |
| |
| // BEGIN android-changed |
| // This object is mutated during use, so can't be cached safely. |
| // private NumberFormat numberFormat; |
| // END android-changed |
| |
| private DateTimeUtil dateTimeUtil; |
| |
| Transformer(Formatter formatter, Locale locale) { |
| this.formatter = formatter; |
| this.locale = (null == locale ? Locale.US : locale); |
| } |
| |
| private NumberFormat getNumberFormat() { |
| // BEGIN android-changed |
| return LocaleCache.getNumberFormat(locale); |
| // END android-changed |
| } |
| |
| // BEGIN android-changed |
| DecimalFormatSymbols getDecimalFormatSymbols() { |
| if (decimalFormatSymbols == null) { |
| decimalFormatSymbols = new DecimalFormatSymbols(locale); |
| } |
| return decimalFormatSymbols; |
| } |
| // END android-changed |
| |
| /* |
| * Gets the formatted string according to the format token and the |
| * argument. |
| */ |
| CharSequence transform(FormatToken token, Object argument) { |
| this.formatToken = token; |
| this.arg = argument; |
| |
| // There are only two format specifiers that matter: "%d" and "%s". |
| // Nothing else is common in the wild. We fast-path these two to |
| // avoid the heavyweight machinery needed to cope with flags, width, |
| // and precision. |
| if (token.isDefault()) { |
| switch (token.getConversionType()) { |
| case 's': |
| if (arg == null) { |
| return "null"; |
| } else if (!(arg instanceof Formattable)) { |
| return arg.toString(); |
| } |
| break; |
| case 'd': |
| if (arg instanceof Integer || arg instanceof Long || arg instanceof Short || arg instanceof Byte) { |
| // TODO: when we fix the rest of formatter to correctly use locale-specific |
| // digits when getDecimalFormatSymbols().getZeroDigit() != '0', we'll need |
| // to add a special case here too. |
| return arg.toString(); |
| } |
| } |
| } |
| |
| CharSequence result; |
| switch (token.getConversionType()) { |
| case 'B': |
| case 'b': { |
| result = transformFromBoolean(); |
| break; |
| } |
| case 'H': |
| case 'h': { |
| result = transformFromHashCode(); |
| break; |
| } |
| case 'S': |
| case 's': { |
| result = transformFromString(); |
| break; |
| } |
| case 'C': |
| case 'c': { |
| result = transformFromCharacter(); |
| break; |
| } |
| case 'd': |
| case 'o': |
| case 'x': |
| case 'X': { |
| if (null == arg || arg instanceof BigInteger) { |
| result = transformFromBigInteger(); |
| } else { |
| result = transformFromInteger(); |
| } |
| break; |
| } |
| case 'e': |
| case 'E': |
| case 'g': |
| case 'G': |
| case 'f': |
| case 'a': |
| case 'A': { |
| result = transformFromFloat(); |
| break; |
| } |
| case '%': { |
| result = transformFromPercent(); |
| break; |
| } |
| case 'n': { |
| result = transformFromLineSeparator(); |
| break; |
| } |
| case 't': |
| case 'T': { |
| result = transformFromDateTime(); |
| break; |
| } |
| default: { |
| throw new UnknownFormatConversionException(String |
| .valueOf(token.getConversionType())); |
| } |
| } |
| |
| if (Character.isUpperCase(token.getConversionType())) { |
| if (result != null) { |
| result = result.toString().toUpperCase(locale); |
| } |
| } |
| return result; |
| } |
| |
| private IllegalFormatConversionException badArgumentType() { |
| throw new IllegalFormatConversionException(formatToken.getConversionType(), |
| arg.getClass()); |
| } |
| |
| /* |
| * Transforms the Boolean argument to a formatted string. |
| */ |
| private CharSequence transformFromBoolean() { |
| formatToken.checkMissingWidth(); |
| formatToken.ensureOnlyMinus(); |
| CharSequence result; |
| if (arg instanceof Boolean) { |
| result = arg.toString(); |
| } else if (arg == null) { |
| result = "false"; //$NON-NLS-1$ |
| } else { |
| result = "true"; //$NON-NLS-1$ |
| } |
| return padding(result, 0); |
| } |
| |
| /* |
| * Transforms the hash code of the argument to a formatted string. |
| */ |
| private CharSequence transformFromHashCode() { |
| formatToken.checkMissingWidth(); |
| formatToken.ensureOnlyMinus(); |
| CharSequence result; |
| if (arg == null) { |
| result = "null"; //$NON-NLS-1$ |
| } else { |
| result = Integer.toHexString(arg.hashCode()); |
| } |
| return padding(result, 0); |
| } |
| |
| /* |
| * Transforms the String to a formatted string. |
| */ |
| private CharSequence transformFromString() { |
| formatToken.checkMissingWidth(); |
| if (arg instanceof Formattable) { |
| // only minus and sharp flag is valid |
| if (formatToken.flagAdd || formatToken.flagComma || formatToken.flagParenthesis || formatToken.flagSpace || formatToken.flagZero) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| int flag = 0; |
| if (formatToken.flagMinus) { |
| flag |= FormattableFlags.LEFT_JUSTIFY; |
| } |
| if (formatToken.flagSharp) { |
| flag |= FormattableFlags.ALTERNATE; |
| } |
| if (Character.isUpperCase(formatToken.getConversionType())) { |
| flag |= FormattableFlags.UPPERCASE; |
| } |
| ((Formattable) arg).formatTo(formatter, flag, formatToken.getWidth(), |
| formatToken.getPrecision()); |
| // all actions have been taken out in the |
| // Formattable.formatTo, thus there is nothing to do, just |
| // returns null, which tells the Parser to add nothing to the |
| // output. |
| return null; |
| } |
| // only '-' is valid for flags if the argument is not an instance of Formattable |
| formatToken.ensureOnlyMinus(); |
| CharSequence result = arg != null ? arg.toString() : "null"; |
| return padding(result, 0); |
| } |
| |
| /* |
| * Transforms the Character to a formatted string. |
| */ |
| private CharSequence transformFromCharacter() { |
| formatToken.checkMissingWidth(); |
| formatToken.ensureOnlyMinus(); |
| formatToken.ensureNoPrecision(); |
| |
| if (arg == null) { |
| return padding("null", 0); |
| } |
| if (arg instanceof Character) { |
| return padding(String.valueOf(arg), 0); |
| } else if (arg instanceof Byte || arg instanceof Short || arg instanceof Integer) { |
| int codePoint = ((Number) arg).intValue(); |
| if (!Character.isValidCodePoint(codePoint)) { |
| throw new IllegalFormatCodePointException(codePoint); |
| } |
| CharSequence result = (codePoint < Character.MIN_SUPPLEMENTARY_CODE_POINT) |
| ? String.valueOf((char) codePoint) |
| : String.valueOf(Character.toChars(codePoint)); |
| return padding(result, 0); |
| } else { |
| throw badArgumentType(); |
| } |
| } |
| |
| /* |
| * Transforms percent to a formatted string. Only '-' is legal flag. |
| * Precision and arguments are illegal. |
| */ |
| private CharSequence transformFromPercent() { |
| formatToken.checkMissingWidth(); |
| formatToken.ensureOnlyMinus(); |
| formatToken.ensureNoPrecision(); |
| if (formatToken.hasArg()) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| return padding("%", 0); |
| } |
| |
| /* |
| * Transforms line separator to a formatted string. Any flag, width, |
| * precision or argument is illegal. |
| */ |
| private CharSequence transformFromLineSeparator() { |
| formatToken.ensureNoPrecision(); |
| |
| if (formatToken.isWidthSet()) { |
| throw new IllegalFormatWidthException(formatToken.getWidth()); |
| } |
| |
| if (!formatToken.hasDefaultFlags() || formatToken.hasArg()) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| if (lineSeparator == null) { |
| lineSeparator = AccessController.doPrivileged(new PrivilegedAction<String>() { |
| public String run() { |
| return System.getProperty("line.separator"); //$NON-NLS-1$ |
| } |
| }); |
| } |
| return lineSeparator; |
| } |
| |
| /* |
| * Pads characters to the formatted string. |
| */ |
| private CharSequence padding(CharSequence source, int startIndex) { |
| boolean sourceIsStringBuilder = (source instanceof StringBuilder); |
| |
| int start = startIndex; |
| int width = formatToken.getWidth(); |
| int precision = formatToken.getPrecision(); |
| |
| int length = source.length(); |
| if (precision >= 0) { |
| length = Math.min(length, precision); |
| if (sourceIsStringBuilder) { |
| ((StringBuilder) source).setLength(length); |
| } else { |
| source = source.subSequence(0, length); |
| } |
| } |
| if (width > 0) { |
| width = Math.max(source.length(), width); |
| } |
| if (length >= width) { |
| return source; |
| } |
| |
| char paddingChar = '\u0020'; // space as padding char. |
| if (formatToken.flagZero) { |
| if (formatToken.getConversionType() == 'd') { |
| paddingChar = getDecimalFormatSymbols().getZeroDigit(); |
| } else { |
| paddingChar = '0'; |
| } |
| } else { |
| // if padding char is space, always pad from the start. |
| start = 0; |
| } |
| char[] paddingChars = new char[width - length]; |
| Arrays.fill(paddingChars, paddingChar); |
| |
| boolean paddingRight = formatToken.flagMinus; |
| StringBuilder result = toStringBuilder(source); |
| if (paddingRight) { |
| result.append(paddingChars); |
| } else { |
| result.insert(start, paddingChars); |
| } |
| return result; |
| } |
| |
| private StringBuilder toStringBuilder(CharSequence cs) { |
| return cs instanceof StringBuilder ? (StringBuilder) cs : new StringBuilder(cs); |
| } |
| |
| private StringBuilder wrapParentheses(StringBuilder result) { |
| result.setCharAt(0, '('); // Replace the '-'. |
| if (formatToken.flagZero) { |
| formatToken.setWidth(formatToken.getWidth() - 1); |
| result = (StringBuilder) padding(result, 1); |
| result.append(')'); |
| } else { |
| result.append(')'); |
| result = (StringBuilder) padding(result, 0); |
| } |
| return result; |
| } |
| |
| /* |
| * Transforms the Integer to a formatted string. |
| */ |
| private CharSequence transformFromInteger() { |
| int startIndex = 0; |
| StringBuilder result = new StringBuilder(); |
| char currentConversionType = formatToken.getConversionType(); |
| |
| if (formatToken.flagMinus || formatToken.flagZero) { |
| if (!formatToken.isWidthSet()) { |
| throw new MissingFormatWidthException(formatToken.getStrFlags()); |
| } |
| } |
| // Combination of '+' and ' ' is illegal. |
| if (formatToken.flagAdd && formatToken.flagSpace) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| formatToken.ensureNoPrecision(); |
| long value; |
| if (arg instanceof Long) { |
| value = ((Long) arg).longValue(); |
| } else if (arg instanceof Integer) { |
| value = ((Integer) arg).longValue(); |
| } else if (arg instanceof Short) { |
| value = ((Short) arg).longValue(); |
| } else if (arg instanceof Byte) { |
| value = ((Byte) arg).longValue(); |
| } else { |
| throw badArgumentType(); |
| } |
| if ('d' != currentConversionType) { |
| if (formatToken.flagAdd || formatToken.flagSpace || formatToken.flagComma || |
| formatToken.flagParenthesis) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| formatToken.getConversionType()); |
| } |
| } |
| |
| if (formatToken.flagSharp) { |
| if ('d' == currentConversionType) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| formatToken.getConversionType()); |
| } else if ('o' == currentConversionType) { |
| result.append("0"); //$NON-NLS-1$ |
| startIndex += 1; |
| } else { |
| result.append("0x"); //$NON-NLS-1$ |
| startIndex += 2; |
| } |
| } |
| |
| if (formatToken.flagMinus && formatToken.flagZero) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| if ('d' == currentConversionType) { |
| if (formatToken.flagComma) { |
| NumberFormat numberFormat = getNumberFormat(); |
| numberFormat.setGroupingUsed(true); |
| result.append(numberFormat.format(arg)); |
| } else { |
| result.append(value); |
| } |
| |
| if (value < 0) { |
| if (formatToken.flagParenthesis) { |
| return wrapParentheses(result); |
| } else if (formatToken.flagZero) { |
| startIndex++; |
| } |
| } else { |
| if (formatToken.flagAdd) { |
| result.insert(0, '+'); |
| startIndex += 1; |
| } else if (formatToken.flagSpace) { |
| result.insert(0, ' '); |
| startIndex += 1; |
| } |
| } |
| } else { |
| // Undo sign-extension, since we'll be using Long.to(Octal|Hex)String. |
| if (arg instanceof Byte) { |
| value &= 0xffL; |
| } else if (arg instanceof Short) { |
| value &= 0xffffL; |
| } else if (arg instanceof Integer) { |
| value &= 0xffffffffL; |
| } |
| if ('o' == currentConversionType) { |
| result.append(Long.toOctalString(value)); |
| } else { |
| result.append(Long.toHexString(value)); |
| } |
| } |
| |
| return padding(result, startIndex); |
| } |
| |
| private CharSequence transformFromSpecialNumber() { |
| if (!(arg instanceof Number) || arg instanceof BigDecimal) { |
| return null; |
| } |
| |
| Number number = (Number) arg; |
| double d = number.doubleValue(); |
| String source = null; |
| if (Double.isNaN(d)) { |
| source = "NaN"; //$NON-NLS-1$ |
| } else if (d == Double.POSITIVE_INFINITY) { |
| if (formatToken.flagAdd) { |
| source = "+Infinity"; //$NON-NLS-1$ |
| } else if (formatToken.flagSpace) { |
| source = " Infinity"; //$NON-NLS-1$ |
| } else { |
| source = "Infinity"; //$NON-NLS-1$ |
| } |
| } else if (d == Double.NEGATIVE_INFINITY) { |
| if (formatToken.flagParenthesis) { |
| source = "(Infinity)"; //$NON-NLS-1$ |
| } else { |
| source = "-Infinity"; //$NON-NLS-1$ |
| } |
| } else { |
| return null; |
| } |
| |
| formatToken.setPrecision(FormatToken.UNSET); |
| formatToken.flagZero = false; |
| return padding(source, 0); |
| } |
| |
| private CharSequence transformFromNull() { |
| formatToken.flagZero = false; |
| return padding("null", 0); //$NON-NLS-1$ |
| } |
| |
| /* |
| * Transforms a BigInteger to a formatted string. |
| */ |
| private CharSequence transformFromBigInteger() { |
| int startIndex = 0; |
| boolean isNegative = false; |
| StringBuilder result = new StringBuilder(); |
| BigInteger bigInt = (BigInteger) arg; |
| char currentConversionType = formatToken.getConversionType(); |
| |
| if (formatToken.flagMinus || formatToken.flagZero) { |
| if (!formatToken.isWidthSet()) { |
| throw new MissingFormatWidthException(formatToken.getStrFlags()); |
| } |
| } |
| |
| // Combination of '+' & ' ' is illegal. |
| if (formatToken.flagAdd && formatToken.flagSpace) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| // Combination of '-' & '0' is illegal. |
| if (formatToken.flagZero && formatToken.flagMinus) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| formatToken.ensureNoPrecision(); |
| |
| if ('d' != currentConversionType && formatToken.flagComma) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| |
| if (formatToken.flagSharp && 'd' == currentConversionType) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| |
| if (bigInt == null) { |
| return transformFromNull(); |
| } |
| |
| isNegative = (bigInt.compareTo(BigInteger.ZERO) < 0); |
| |
| if ('d' == currentConversionType) { |
| NumberFormat numberFormat = getNumberFormat(); |
| numberFormat.setGroupingUsed(formatToken.flagComma); |
| result.append(numberFormat.format(bigInt)); |
| } else if ('o' == currentConversionType) { |
| // convert BigInteger to a string presentation using radix 8 |
| result.append(bigInt.toString(8)); |
| } else { |
| // convert BigInteger to a string presentation using radix 16 |
| result.append(bigInt.toString(16)); |
| } |
| if (formatToken.flagSharp) { |
| startIndex = isNegative ? 1 : 0; |
| if ('o' == currentConversionType) { |
| result.insert(startIndex, "0"); //$NON-NLS-1$ |
| startIndex += 1; |
| } else if ('x' == currentConversionType |
| || 'X' == currentConversionType) { |
| result.insert(startIndex, "0x"); //$NON-NLS-1$ |
| startIndex += 2; |
| } |
| } |
| |
| if (!isNegative) { |
| if (formatToken.flagAdd) { |
| result.insert(0, '+'); |
| startIndex += 1; |
| } |
| if (formatToken.flagSpace) { |
| result.insert(0, ' '); |
| startIndex += 1; |
| } |
| } |
| |
| /* pad paddingChar to the output */ |
| if (isNegative && formatToken.flagParenthesis) { |
| return wrapParentheses(result); |
| } |
| if (isNegative && formatToken.flagZero) { |
| startIndex++; |
| } |
| return padding(result, startIndex); |
| } |
| |
| /* |
| * Transforms a Float,Double or BigDecimal to a formatted string. |
| */ |
| private CharSequence transformFromFloat() { |
| StringBuilder result = new StringBuilder(); |
| int startIndex = 0; |
| char currentConversionType = formatToken.getConversionType(); |
| |
| if (formatToken.flagMinus || formatToken.flagZero) { |
| if (!formatToken.isWidthSet()) { |
| throw new MissingFormatWidthException(formatToken.getStrFlags()); |
| } |
| } |
| |
| if (formatToken.flagAdd && formatToken.flagSpace) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| if (formatToken.flagMinus && formatToken.flagZero) { |
| throw new IllegalFormatFlagsException(formatToken.getStrFlags()); |
| } |
| |
| if (currentConversionType == 'e' || currentConversionType == 'E') { |
| if (formatToken.flagComma) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| } else if (currentConversionType == 'g' || currentConversionType == 'G') { |
| if (formatToken.flagSharp) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| } else if (currentConversionType == 'a' || currentConversionType == 'A') { |
| if (formatToken.flagComma || formatToken.flagParenthesis) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| } |
| |
| if (null == arg) { |
| return transformFromNull(); |
| } |
| |
| if (!(arg instanceof Float || arg instanceof Double || arg instanceof BigDecimal)) { |
| throw badArgumentType(); |
| } |
| |
| CharSequence specialNumberResult = transformFromSpecialNumber(); |
| if (null != specialNumberResult) { |
| return specialNumberResult; |
| } |
| |
| if (currentConversionType != 'a' && currentConversionType != 'A' && |
| !formatToken.isPrecisionSet()) { |
| formatToken.setPrecision(FormatToken.DEFAULT_PRECISION); |
| } |
| |
| // output result |
| DecimalFormatSymbols decimalFormatSymbols = getDecimalFormatSymbols(); |
| FloatUtil floatUtil = new FloatUtil(result, formatToken, |
| (DecimalFormat) getNumberFormat(), decimalFormatSymbols, arg); |
| floatUtil.transform(currentConversionType); |
| |
| formatToken.setPrecision(FormatToken.UNSET); |
| |
| if (decimalFormatSymbols.getMinusSign() == result.charAt(0)) { |
| if (formatToken.flagParenthesis) { |
| return wrapParentheses(result); |
| } |
| } else { |
| if (formatToken.flagSpace) { |
| result.insert(0, ' '); |
| startIndex++; |
| } |
| if (formatToken.flagAdd) { |
| result.insert(0, floatUtil.getAddSign()); |
| startIndex++; |
| } |
| } |
| |
| char firstChar = result.charAt(0); |
| if (formatToken.flagZero |
| && (firstChar == floatUtil.getAddSign() || firstChar == decimalFormatSymbols.getMinusSign())) { |
| startIndex = 1; |
| } |
| |
| if (currentConversionType == 'a' || currentConversionType == 'A') { |
| startIndex += 2; |
| } |
| return padding(result, startIndex); |
| } |
| |
| /* |
| * Transforms a Date to a formatted string. |
| */ |
| private CharSequence transformFromDateTime() { |
| formatToken.ensureNoPrecision(); |
| |
| char currentConversionType = formatToken.getConversionType(); |
| |
| if (formatToken.flagSharp) { |
| throw new FormatFlagsConversionMismatchException(formatToken.getStrFlags(), |
| currentConversionType); |
| } |
| |
| if (formatToken.flagMinus && formatToken.getWidth() == FormatToken.UNSET) { |
| throw new MissingFormatWidthException("-" //$NON-NLS-1$ |
| + currentConversionType); |
| } |
| |
| if (null == arg) { |
| return transformFromNull(); |
| } |
| |
| Calendar calendar; |
| if (arg instanceof Calendar) { |
| calendar = (Calendar) arg; |
| } else { |
| Date date = null; |
| if (arg instanceof Long) { |
| date = new Date(((Long) arg).longValue()); |
| } else if (arg instanceof Date) { |
| date = (Date) arg; |
| } else { |
| throw badArgumentType(); |
| } |
| calendar = Calendar.getInstance(locale); |
| calendar.setTime(date); |
| } |
| |
| if (null == dateTimeUtil) { |
| dateTimeUtil = new DateTimeUtil(locale); |
| } |
| StringBuilder result = new StringBuilder(); |
| // output result |
| dateTimeUtil.transform(formatToken, calendar, result); |
| return padding(result, 0); |
| } |
| } |
| |
| private static class FloatUtil { |
| private final StringBuilder result; |
| private final DecimalFormat decimalFormat; |
| private final DecimalFormatSymbols decimalFormatSymbols; |
| private final FormatToken formatToken; |
| private final Object argument; |
| |
| FloatUtil(StringBuilder result, FormatToken formatToken, DecimalFormat decimalFormat, |
| DecimalFormatSymbols decimalFormatSymbols, Object argument) { |
| this.result = result; |
| this.formatToken = formatToken; |
| this.decimalFormat = decimalFormat; |
| this.decimalFormatSymbols = decimalFormatSymbols; |
| this.argument = argument; |
| } |
| |
| void transform(char conversionType) { |
| switch (conversionType) { |
| case 'e': |
| case 'E': { |
| transform_e(); |
| break; |
| } |
| case 'f': { |
| transform_f(); |
| break; |
| } |
| case 'g': |
| case 'G': { |
| transform_g(); |
| break; |
| } |
| case 'a': |
| case 'A': { |
| transform_a(); |
| break; |
| } |
| default: { |
| throw new UnknownFormatConversionException(String.valueOf(conversionType)); |
| } |
| } |
| } |
| |
| char getAddSign() { |
| return '+'; |
| } |
| |
| void transform_e() { |
| StringBuilder pattern = new StringBuilder(); |
| pattern.append('0'); |
| if (formatToken.getPrecision() > 0) { |
| pattern.append('.'); |
| char[] zeros = new char[formatToken.getPrecision()]; |
| Arrays.fill(zeros, '0'); |
| pattern.append(zeros); |
| } |
| pattern.append('E'); |
| pattern.append("+00"); //$NON-NLS-1$ |
| decimalFormat.applyPattern(pattern.toString()); |
| String formattedString = decimalFormat.format(argument); |
| result.append(formattedString.replace('E', 'e')); |
| |
| // if the flag is sharp and decimal separator is always given |
| // out. |
| if (formatToken.flagSharp && formatToken.getPrecision() == 0) { |
| int indexOfE = result.indexOf("e"); //$NON-NLS-1$ |
| result.insert(indexOfE, decimalFormatSymbols.getDecimalSeparator()); |
| } |
| } |
| |
| void transform_g() { |
| int precision = formatToken.getPrecision(); |
| precision = (0 == precision ? 1 : precision); |
| formatToken.setPrecision(precision); |
| |
| if (0.0 == ((Number) argument).doubleValue()) { |
| precision--; |
| formatToken.setPrecision(precision); |
| transform_f(); |
| return; |
| } |
| |
| boolean requireScientificRepresentation = true; |
| double d = ((Number) argument).doubleValue(); |
| d = Math.abs(d); |
| if (Double.isInfinite(d)) { |
| precision = formatToken.getPrecision(); |
| precision--; |
| formatToken.setPrecision(precision); |
| transform_e(); |
| return; |
| } |
| BigDecimal b = new BigDecimal(d, new MathContext(precision)); |
| d = b.doubleValue(); |
| long l = b.longValue(); |
| |
| if (d >= 1 && d < Math.pow(10, precision)) { |
| if (l < Math.pow(10, precision)) { |
| requireScientificRepresentation = false; |
| precision -= String.valueOf(l).length(); |
| precision = precision < 0 ? 0 : precision; |
| l = Math.round(d * Math.pow(10, precision + 1)); |
| if (String.valueOf(l).length() <= formatToken |
| .getPrecision()) { |
| precision++; |
| } |
| formatToken.setPrecision(precision); |
| } |
| |
| } else { |
| l = b.movePointRight(4).longValue(); |
| if (d >= Math.pow(10, -4) && d < 1) { |
| requireScientificRepresentation = false; |
| precision += 4 - String.valueOf(l).length(); |
| l = b.movePointRight(precision + 1).longValue(); |
| if (String.valueOf(l).length() <= formatToken |
| .getPrecision()) { |
| precision++; |
| } |
| l = b.movePointRight(precision).longValue(); |
| if (l >= Math.pow(10, precision - 4)) { |
| formatToken.setPrecision(precision); |
| } |
| } |
| } |
| if (requireScientificRepresentation) { |
| precision = formatToken.getPrecision(); |
| precision--; |
| formatToken.setPrecision(precision); |
| transform_e(); |
| } else { |
| transform_f(); |
| } |
| } |
| |
| void transform_f() { |
| // TODO: store a default DecimalFormat we can clone? |
| String pattern = "0.000000"; |
| if (formatToken.flagComma || formatToken.getPrecision() != 6) { |
| StringBuilder patternBuilder = new StringBuilder(); |
| if (formatToken.flagComma) { |
| patternBuilder.append(','); |
| int groupingSize = decimalFormat.getGroupingSize(); |
| if (groupingSize > 1) { |
| char[] sharps = new char[groupingSize - 1]; |
| Arrays.fill(sharps, '#'); |
| patternBuilder.append(sharps); |
| } |
| } |
| patternBuilder.append(0); |
| if (formatToken.getPrecision() > 0) { |
| patternBuilder.append('.'); |
| char[] zeros = new char[formatToken.getPrecision()]; |
| Arrays.fill(zeros, '0'); |
| patternBuilder.append(zeros); |
| } |
| pattern = patternBuilder.toString(); |
| } |
| // TODO: if DecimalFormat.toPattern was cheap, we could make this cheap (preferably *in* DecimalFormat). |
| decimalFormat.applyPattern(pattern); |
| result.append(decimalFormat.format(argument)); |
| // if the flag is sharp and decimal separator is always given |
| // out. |
| if (formatToken.flagSharp && formatToken.getPrecision() == 0) { |
| result.append(decimalFormatSymbols.getDecimalSeparator()); |
| } |
| } |
| |
| void transform_a() { |
| if (argument instanceof Float) { |
| Float F = (Float) argument; |
| result.append(Float.toHexString(F.floatValue())); |
| |
| } else if (argument instanceof Double) { |
| Double D = (Double) argument; |
| result.append(Double.toHexString(D.doubleValue())); |
| } else { |
| // BigInteger is not supported. |
| throw new IllegalFormatConversionException( |
| formatToken.getConversionType(), argument.getClass()); |
| } |
| |
| if (!formatToken.isPrecisionSet()) { |
| return; |
| } |
| |
| int precision = formatToken.getPrecision(); |
| precision = (0 == precision ? 1 : precision); |
| int indexOfFirstFractionalDigit = result.indexOf(".") + 1; //$NON-NLS-1$ |
| int indexOfP = result.indexOf("p"); //$NON-NLS-1$ |
| int fractionalLength = indexOfP - indexOfFirstFractionalDigit; |
| |
| if (fractionalLength == precision) { |
| return; |
| } |
| |
| if (fractionalLength < precision) { |
| char zeros[] = new char[precision - fractionalLength]; |
| Arrays.fill(zeros, '0'); |
| result.insert(indexOfP, zeros); |
| return; |
| } |
| result.delete(indexOfFirstFractionalDigit + precision, indexOfP); |
| } |
| } |
| |
| private static class DateTimeUtil { |
| private Calendar calendar; |
| |
| private Locale locale; |
| |
| private StringBuilder result; |
| |
| private DateFormatSymbols dateFormatSymbols; |
| |
| DateTimeUtil(Locale locale) { |
| this.locale = locale; |
| } |
| |
| void transform(FormatToken formatToken, Calendar aCalendar, |
| StringBuilder aResult) { |
| this.result = aResult; |
| this.calendar = aCalendar; |
| char suffix = formatToken.getDateSuffix(); |
| |
| switch (suffix) { |
| case 'H': { |
| transform_H(); |
| break; |
| } |
| case 'I': { |
| transform_I(); |
| break; |
| } |
| case 'M': { |
| transform_M(); |
| break; |
| } |
| case 'S': { |
| transform_S(); |
| break; |
| } |
| case 'L': { |
| transform_L(); |
| break; |
| } |
| case 'N': { |
| transform_N(); |
| break; |
| } |
| case 'k': { |
| transform_k(); |
| break; |
| } |
| case 'l': { |
| transform_l(); |
| break; |
| } |
| case 'p': { |
| transform_p(true); |
| break; |
| } |
| case 's': { |
| transform_s(); |
| break; |
| } |
| case 'z': { |
| transform_z(); |
| break; |
| } |
| case 'Z': { |
| transform_Z(); |
| break; |
| } |
| case 'Q': { |
| transform_Q(); |
| break; |
| } |
| case 'B': { |
| transform_B(); |
| break; |
| } |
| case 'b': |
| case 'h': { |
| transform_b(); |
| break; |
| } |
| case 'A': { |
| transform_A(); |
| break; |
| } |
| case 'a': { |
| transform_a(); |
| break; |
| } |
| case 'C': { |
| transform_C(); |
| break; |
| } |
| case 'Y': { |
| transform_Y(); |
| break; |
| } |
| case 'y': { |
| transform_y(); |
| break; |
| } |
| case 'j': { |
| transform_j(); |
| break; |
| } |
| case 'm': { |
| transform_m(); |
| break; |
| } |
| case 'd': { |
| transform_d(); |
| break; |
| } |
| case 'e': { |
| transform_e(); |
| break; |
| } |
| case 'R': { |
| transform_R(); |
| break; |
| } |
| |
| case 'T': { |
| transform_T(); |
| break; |
| } |
| case 'r': { |
| transform_r(); |
| break; |
| } |
| case 'D': { |
| transform_D(); |
| break; |
| } |
| case 'F': { |
| transform_F(); |
| break; |
| } |
| case 'c': { |
| transform_c(); |
| break; |
| } |
| default: { |
| throw new UnknownFormatConversionException(String |
| .valueOf(formatToken.getConversionType()) |
| + formatToken.getDateSuffix()); |
| } |
| } |
| } |
| |
| private void transform_e() { |
| int day = calendar.get(Calendar.DAY_OF_MONTH); |
| result.append(day); |
| } |
| |
| private void transform_d() { |
| int day = calendar.get(Calendar.DAY_OF_MONTH); |
| result.append(paddingZeros(day, 2)); |
| } |
| |
| private void transform_m() { |
| int month = calendar.get(Calendar.MONTH); |
| // The returned month starts from zero, which needs to be |
| // incremented by 1. |
| month++; |
| result.append(paddingZeros(month, 2)); |
| } |
| |
| private void transform_j() { |
| int day = calendar.get(Calendar.DAY_OF_YEAR); |
| result.append(paddingZeros(day, 3)); |
| } |
| |
| private void transform_y() { |
| int year = calendar.get(Calendar.YEAR); |
| year %= 100; |
| result.append(paddingZeros(year, 2)); |
| } |
| |
| private void transform_Y() { |
| int year = calendar.get(Calendar.YEAR); |
| result.append(paddingZeros(year, 4)); |
| } |
| |
| private void transform_C() { |
| int year = calendar.get(Calendar.YEAR); |
| year /= 100; |
| result.append(paddingZeros(year, 2)); |
| } |
| |
| private void transform_a() { |
| int day = calendar.get(Calendar.DAY_OF_WEEK); |
| result.append(getDateFormatSymbols().getShortWeekdays()[day]); |
| } |
| |
| private void transform_A() { |
| int day = calendar.get(Calendar.DAY_OF_WEEK); |
| result.append(getDateFormatSymbols().getWeekdays()[day]); |
| } |
| |
| private void transform_b() { |
| int month = calendar.get(Calendar.MONTH); |
| result.append(getDateFormatSymbols().getShortMonths()[month]); |
| } |
| |
| private void transform_B() { |
| int month = calendar.get(Calendar.MONTH); |
| result.append(getDateFormatSymbols().getMonths()[month]); |
| } |
| |
| private void transform_Q() { |
| long milliSeconds = calendar.getTimeInMillis(); |
| result.append(milliSeconds); |
| } |
| |
| private void transform_s() { |
| long milliSeconds = calendar.getTimeInMillis(); |
| milliSeconds /= 1000; |
| result.append(milliSeconds); |
| } |
| |
| private void transform_Z() { |
| TimeZone timeZone = calendar.getTimeZone(); |
| result.append(timeZone |
| .getDisplayName( |
| timeZone.inDaylightTime(calendar.getTime()), |
| TimeZone.SHORT, locale)); |
| } |
| |
| private void transform_z() { |
| long offset = calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET); |
| char sign = '+'; |
| if (offset < 0) { |
| sign = '-'; |
| offset = -offset; |
| } |
| result.append(sign); |
| result.append(paddingZeros(offset / 3600000, 2)); |
| result.append(paddingZeros((offset % 3600000) / 60000, 2)); |
| } |
| |
| private void transform_p(boolean isLowerCase) { |
| int i = calendar.get(Calendar.AM_PM); |
| String s = getDateFormatSymbols().getAmPmStrings()[i]; |
| if (isLowerCase) { |
| s = s.toLowerCase(locale); |
| } |
| result.append(s); |
| } |
| |
| private void transform_N() { |
| long nanosecond = calendar.get(Calendar.MILLISECOND) * 1000000L; |
| result.append(paddingZeros(nanosecond, 9)); |
| } |
| |
| private void transform_L() { |
| int millisecond = calendar.get(Calendar.MILLISECOND); |
| result.append(paddingZeros(millisecond, 3)); |
| } |
| |
| private void transform_S() { |
| int second = calendar.get(Calendar.SECOND); |
| result.append(paddingZeros(second, 2)); |
| } |
| |
| private void transform_M() { |
| int minute = calendar.get(Calendar.MINUTE); |
| result.append(paddingZeros(minute, 2)); |
| } |
| |
| private void transform_l() { |
| int hour = calendar.get(Calendar.HOUR); |
| if (0 == hour) { |
| hour = 12; |
| } |
| result.append(hour); |
| } |
| |
| private void transform_k() { |
| int hour = calendar.get(Calendar.HOUR_OF_DAY); |
| result.append(hour); |
| } |
| |
| private void transform_I() { |
| int hour = calendar.get(Calendar.HOUR); |
| if (0 == hour) { |
| hour = 12; |
| } |
| result.append(paddingZeros(hour, 2)); |
| } |
| |
| private void transform_H() { |
| int hour = calendar.get(Calendar.HOUR_OF_DAY); |
| result.append(paddingZeros(hour, 2)); |
| } |
| |
| private void transform_R() { |
| transform_H(); |
| result.append(':'); |
| transform_M(); |
| } |
| |
| private void transform_T() { |
| transform_H(); |
| result.append(':'); |
| transform_M(); |
| result.append(':'); |
| transform_S(); |
| } |
| |
| private void transform_r() { |
| transform_I(); |
| result.append(':'); |
| transform_M(); |
| result.append(':'); |
| transform_S(); |
| result.append(' '); |
| transform_p(false); |
| } |
| |
| private void transform_D() { |
| transform_m(); |
| result.append('/'); |
| transform_d(); |
| result.append('/'); |
| transform_y(); |
| } |
| |
| private void transform_F() { |
| transform_Y(); |
| result.append('-'); |
| transform_m(); |
| result.append('-'); |
| transform_d(); |
| } |
| |
| private void transform_c() { |
| transform_a(); |
| result.append(' '); |
| transform_b(); |
| result.append(' '); |
| transform_d(); |
| result.append(' '); |
| transform_T(); |
| result.append(' '); |
| transform_Z(); |
| result.append(' '); |
| transform_Y(); |
| } |
| |
| // TODO: this doesn't need a temporary StringBuilder! |
| private static String paddingZeros(long number, int length) { |
| int len = length; |
| StringBuilder result = new StringBuilder(); |
| result.append(number); |
| int startIndex = 0; |
| if (number < 0) { |
| len++; |
| startIndex = 1; |
| } |
| len -= result.length(); |
| if (len > 0) { |
| char[] zeros = new char[len]; |
| Arrays.fill(zeros, '0'); |
| result.insert(startIndex, zeros); |
| } |
| return result.toString(); |
| } |
| |
| private DateFormatSymbols getDateFormatSymbols() { |
| if (null == dateFormatSymbols) { |
| dateFormatSymbols = new DateFormatSymbols(locale); |
| } |
| return dateFormatSymbols; |
| } |
| } |
| |
| private static class FormatSpecifierParser { |
| private String format; |
| private int length; |
| |
| private int startIndex; |
| private int i; |
| |
| /** |
| * Constructs a new parser for the given format string. |
| */ |
| FormatSpecifierParser(String format) { |
| this.format = format; |
| this.length = format.length(); |
| } |
| |
| /** |
| * Returns a FormatToken representing the format specifier starting at 'offset'. |
| * @param offset the first character after the '%' |
| */ |
| FormatToken parseFormatToken(int offset) { |
| this.startIndex = offset; |
| this.i = offset; |
| return parseArgumentIndexAndFlags(new FormatToken()); |
| } |
| |
| /** |
| * Returns a string corresponding to the last format specifier that was parsed. |
| * Used to construct error messages. |
| */ |
| String getFormatSpecifierText() { |
| return format.substring(startIndex, i); |
| } |
| |
| private int peek() { |
| return (i < length) ? format.charAt(i) : -1; |
| } |
| |
| private char advance() { |
| if (i >= length) { |
| throw new UnknownFormatConversionException(getFormatSpecifierText()); |
| } |
| return format.charAt(i++); |
| } |
| |
| private FormatToken parseArgumentIndexAndFlags(FormatToken token) { |
| // Parse the argument index, if there is one. |
| int position = i; |
| int ch = peek(); |
| if (Character.isDigit(ch)) { |
| int number = nextInt(); |
| if (peek() == '$') { |
| // The number was an argument index. |
| advance(); // Swallow the '$'. |
| if (number == FormatToken.UNSET) { |
| throw new MissingFormatArgumentException(getFormatSpecifierText()); |
| } |
| // k$ stands for the argument whose index is k-1 except that |
| // 0$ and 1$ both stand for the first element. |
| token.setArgIndex(Math.max(0, number - 1)); |
| } else { |
| if (ch == '0') { |
| // The digit zero is a format flag, so reparse it as such. |
| i = position; |
| } else { |
| // The number was a width. This means there are no flags to parse. |
| return parseWidth(token, number); |
| } |
| } |
| } else if (ch == '<') { |
| token.setArgIndex(FormatToken.LAST_ARGUMENT_INDEX); |
| advance(); |
| } |
| |
| // Parse the flags. |
| while (token.setFlag(peek())) { |
| advance(); |
| } |
| |
| // What comes next? |
| ch = peek(); |
| if (Character.isDigit(ch)) { |
| return parseWidth(token, nextInt()); |
| } else if (ch == '.') { |
| return parsePrecision(token); |
| } else { |
| return parseConversionType(token); |
| } |
| } |
| |
| // We pass the width in because in some cases we've already parsed it. |
| // (Because of the ambiguity between argument indexes and widths.) |
| private FormatToken parseWidth(FormatToken token, int width) { |
| token.setWidth(width); |
| int ch = peek(); |
| if (ch == '.') { |
| return parsePrecision(token); |
| } else { |
| return parseConversionType(token); |
| } |
| } |
| |
| private FormatToken parsePrecision(FormatToken token) { |
| advance(); // Swallow the '.'. |
| int ch = peek(); |
| if (Character.isDigit(ch)) { |
| token.setPrecision(nextInt()); |
| return parseConversionType(token); |
| } else { |
| // The precision is required but not given by the format string. |
| throw new UnknownFormatConversionException(getFormatSpecifierText()); |
| } |
| } |
| |
| private FormatToken parseConversionType(FormatToken token) { |
| char conversionType = advance(); // A conversion type is mandatory. |
| token.setConversionType(conversionType); |
| if (conversionType == 't' || conversionType == 'T') { |
| char dateSuffix = advance(); // A date suffix is mandatory for 't' or 'T'. |
| token.setDateSuffix(dateSuffix); |
| } |
| return token; |
| } |
| |
| // Parses an integer (of arbitrary length, but typically just one digit). |
| private int nextInt() { |
| long value = 0; |
| while (i < length && Character.isDigit(format.charAt(i))) { |
| value = 10 * value + (format.charAt(i++) - '0'); |
| if (value > Integer.MAX_VALUE) { |
| return failNextInt(); |
| } |
| } |
| return (int) value; |
| } |
| |
| // Swallow remaining digits to resync our attempted parse, but return failure. |
| private int failNextInt() { |
| while (Character.isDigit(peek())) { |
| advance(); |
| } |
| return FormatToken.UNSET; |
| } |
| } |
| } |
