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Diffstat (limited to 'infrastructure/net.appjet.common/util/LenientFormatter.java')
| -rw-r--r-- | infrastructure/net.appjet.common/util/LenientFormatter.java | 2809 |
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diff --git a/infrastructure/net.appjet.common/util/LenientFormatter.java b/infrastructure/net.appjet.common/util/LenientFormatter.java deleted file mode 100644 index 293dcdf..0000000 --- a/infrastructure/net.appjet.common/util/LenientFormatter.java +++ /dev/null @@ -1,2809 +0,0 @@ -/* Portions Copyright 2009 Google Inc. - * The rest 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 and Google license 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 net.appjet.common.util; - -import 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.CharBuffer; -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; - -/** - * <p>The {@code LenientFormatter} class is a copy of {@code java.util.Formatter} - * that is lenient in the exact type of {@code java.lang.Number} passed into - * certain flags (integer, floating point, date, and character formats).</p> - * - * <p>The {@code Formatter} class is a String-formatting utility that is designed - * to work like the {@code printf} function of the C programming language. - * Its key methods are the {@code format} methods which create a formatted - * {@code String} by replacing a set of placeholders (format tokens) with formatted - * values. The style used to format each value is determined by the format - * token used. For example, the call<br/> - * {@code format("My decimal value is %d and my String is %s.", 3, "Hello");}<br/> - * returns the {@code String}<br/> - * {@code My decimal value is 3 and my String is Hello.} - * - * <p>The format token consists of a percent sign, optionally followed - * by flags and precision arguments, and then a single character that - * indicates the type of value - * being formatted. If the type is a time/date, then the type character - * {@code t} is followed by an additional character that indicates how the - * date is to be formatted. The two characters {@code <$} immediately - * following the % sign indicate that the previous value should be used again - * instead of moving on to the next value argument. A number {@code n} - * and a dollar sign immediately following the % sign make n the next argument - * to be used. - * - * <p>The available choices are the following: - * - * <table BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Text value types</B></TD> - * </tr> - * <tr> - * <td width="5%">{@code s}</td> - * <td width="10%">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}, {@code s}</td> - * <td width="10%">String to capitals</td> - * <td width="30%">{@code format("%S, %S", "hello", "Hello");}</td> - * <td width="30%">{@code HELLO, HELLO}</td> - * </tr> - * <tr> - * <td width="5%">{@code c}</td> - * <td width="10%">Character</td> - * <td width="30%">{@code format("%c, %c", 'd', 0x65);}</td> - * <td width="30%">{@code d, e}</td> - * </tr> - * <tr> - * <td width="5%">{@code C}</td> - * <td width="10%">Character to capitals</td> - * <td width="30%">{@code format("%C, %C", 'd', 0x65);}</td> - * <td width="30%">{@code D, E}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Text option flags</B><br/>The value between the - * option and the type character indicates the minimum width in - * characters of the formatted value </TD> - * </tr> - * <tr> - * <td width="5%">{@code -}</td> - * <td width="10%">Left justify (width value is required)</td> - * <td width="30%">{@code format("%-3C, %3C", 'd', 0x65);}</td> - * <td width="30%">{@code D , E}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Integer types</B></TD> - * </tr> - * <tr> - * <td width="5%">{@code d}</td> - * <td width="10%">int, formatted as decimal</td> - * <td width="30%">{@code format("%d, %d"1$, 35, 0x10);}</td> - * <td width="30%">{@code 35, 16}</td> - * </tr> - * <tr> - * <td width="5%">{@code o}</td> - * <td width="10%">int, formatted as octal</td> - * <td width="30%">{@code format("%o, %o", 8, 010);}</td> - * <td width="30%">{@code 10, 10}</td> - * </tr> - * <tr> - * <td width="5%">{@code X}, {@code x}</td> - * <td width="10%">int, formatted as hexidecimal</td> - * <td width="30%">{@code format("%x, %X", 10, 10);}</td> - * <td width="30%">{@code a, A}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Integer option flags</B><br/>The value between the - * option and the type character indicates the minimum width in - * characters of the formatted value </TD> - * </tr> - * <tr> - * <td width="5%">{@code +}</td> - * <td width="10%">lead with the number's sign</td> - * <td width="30%">{@code format("%+d, %+4d", 5, 5);}</td> - * <td width="30%">{@code +5, +5}</td> - * </tr> - * <tr> - * <td width="5%">{@code -}</td> - * <td width="10%">Left justify (width value is required)</td> - * <td width="30%">{@code format("%-6dx", 5);}</td> - * <td width="30%">{@code 5 x}</td> - * </tr> - * <tr> - * <td width="5%">{@code #}</td> - * <td width="10%">Print the leading characters that indicate - * hexidecimal or octal (for use only with hex and octal types) </td> - * <td width="30%">{@code format("%#o", 010);}</td> - * <td width="30%">{@code 010}</td> - * </tr> - * <tr> - * <td width="5%">{@code }</td> - * <td width="10%">A space indicates that non-negative numbers - * should have a leading space. </td> - * <td width="30%">{@code format("x% d% 5d", 4, 4);}</td> - * <td width="30%">{@code x 4 4}</td> - * </tr> - * <tr> - * <td width="5%">{@code 0}</td> - * <td width="10%">Pad the number with leading zeros (width value is required)</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="10%">Put parentheses around negative numbers (decimal only)</td> - * <td width="30%">{@code format("%(d, %(d, %(6d", 12, -12, -12);}</td> - * <td width="30%">{@code 12, (12), (12)}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Float types</B><br/>A value immediately following the % symbol - * gives the minimum width in characters of the formatted value; if it - * is followed by a period and another integer, then the second value - * gives the precision (6 by default).</TD> - * </tr> - * <tr> - * <td width="5%">{@code f}</td> - * <td width="10%">float (or double) formatted as a decimal, where - * the precision indicates the number of digits after the decimal.</td> - * <td width="30%">{@code format("%f %<.1f %<1.5f %<10f %<6.0f", 123.456f);}</td> - * <td width="30%">{@code 123.456001 123.5 123.45600 123.456001 123}</td> - * </tr> - * <tr> - * <td width="5%">{@code E}, {@code e}</td> - * <td width="10%">float (or double) formatted in decimal exponential - * notation, where the precision indicates the number of significant digits.</td> - * <td width="30%">{@code format("%E %<.1e %<1.5E %<10E %<6.0E", 123.456f);}</td> - * <td width="30%">{@code 1.234560E+02 1.2e+02 1.23456E+02 1.234560E+02 1E+02}</td> - * </tr> - * <tr> - * <td width="5%">{@code G}, {@code g}</td> - * <td width="10%">float (or double) formatted in decimal exponential - * notation , where the precision indicates the maximum number of significant digits.</td> - * <td width="30%">{@code format("%G %<.1g %<1.5G %<10G %<6.0G", 123.456f);}</td> - * <td width="30%">{@code 123.456 1e+02 123.46 123.456 1E+02}</td> - * </tr> - * <tr> - * <td width="5%">{@code A}, {@code a}</td> - * <td width="10%">float (or double) formatted as a hexidecimal in exponential - * notation, where the precision indicates the number of significant digits.</td> - * <td width="30%">{@code format("%A %<.1a %<1.5A %<10A %<6.0A", 123.456f);}</td> - * <td width="30%">{@code 0X1.EDD2F2P6 0x1.fp6 0X1.EDD2FP6 0X1.EDD2F2P6 0X1.FP6}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Float-type option flags</B><br/>See the Integer-type options. - * The options for float-types are the - * same as for integer types with one addition: </TD> - * </tr> - * <tr> - * <td width="5%">{@code ,}</td> - * <td width="10%">Use a comma in place of a decimal if the locale - * requires it. </td> - * <td width="30%">{@code format(new Locale("fr"), "%,7.2f", 6.03f);}</td> - * <td width="30%">{@code 6,03}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Date types</B></TD> - * </tr> - * <tr> - * <td width="5%">{@code t}, {@code T}</td> - * <td width="10%">Date</td> - * <td width="30%">{@code format(new Locale("fr"), "%tB %TB", Calendar.getInstance(), Calendar.getInstance());}</td> - * <td width="30%">{@code avril AVRIL}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Date format precisions</B><br/>The format precision character - * follows the {@code t}. </TD> - * </tr> - * <tr> - * <td width="5%">{@code A}, {@code a}</td> - * <td width="10%">The day of the week</td> - * <td width="30%">{@code format("%ta %tA", cal, cal);}</td> - * <td width="30%">{@code Tue Tuesday}</td> - * </tr> - * <tr> - * <td width="5%">{@code b}, {@code B}, {@code h}</td> - * <td width="10%">The name of the month</td> - * <td width="30%">{@code format("%tb %<tB %<th", cal, cal, cal);}</td> - * <td width="30%">{@code Apr April Apr}</td> - * </tr> - * <tr> - * <td width="5%">{@code C}</td> - * <td width="10%">The century</td> - * <td width="30%">{@code format("%tC\n", cal);}</td> - * <td width="30%">{@code 20}</td> - * </tr> - * <tr> - * <td width="5%">{@code d}, {@code e}</td> - * <td width="10%">The day of the month (with or without leading zeros)</td> - * <td width="30%">{@code format("%td %te", cal, cal);}</td> - * <td width="30%">{@code 01 1}</td> - * </tr> - * <tr> - * <td width="5%">{@code F}</td> - * <td width="10%">The complete date formatted as 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 D}</td> - * <td width="10%">The complete date formatted as MM/DD/YY - * (not corrected for locale) </td> - * <td width="30%">{@code format(new Locale("en_US"), "%tD", cal);<br/>format(new Locale("en_UK"), " %tD", cal);}</td> - * <td width="30%">{@code 04/01/08 04/01/08}</td> - * </tr> - * <tr> - * <td width="5%">{@code j}</td> - * <td width="10%">The number of the day (from the beginning of the year).</td> - * <td width="30%">{@code format("%tj\n", cal);}</td> - * <td width="30%">{@code 092}</td> - * </tr> - * <tr> - * <td width="5%">{@code m}</td> - * <td width="10%">The number of the month</td> - * <td width="30%">{@code format("%tm\n", cal);}</td> - * <td width="30%">{@code 04}</td> - * </tr> - * <tr> - * <td width="5%">{@code y}, {@code Y}</td> - * <td width="10%">The year</td> - * <td width="30%">{@code format("%ty %tY", cal, cal);}</td> - * <td width="30%">{@code 08 2008}</td> - * </tr> - * <tr> - * <td width="5%">{@code H}, {@code I}, {@code k}, {@code l}</td> - * <td width="10%">The hour of the day, in 12 or 24 hour format, with or - * without a leading zero</td> - * <td width="30%">{@code format("%tH %tI %tk %tl", cal, cal, cal, cal);}</td> - * <td width="30%">{@code 16 04 16 4}</td> - * </tr> - * <tr> - * <td width="5%">{@code p}</td> - * <td width="10%">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 M}, {@code S}, {@code L}, {@code N}</td> - * <td width="10%">The minutes, seconds, milliseconds, and nanoseconds</td> - * <td width="30%">{@code format("%tM %tS %tL %tN", cal, cal, cal, cal);}</td> - * <td width="30%">{@code 08 17 359 359000000}</td> - * </tr> - * <tr> - * <td width="5%">{@code Z}, {@code z}</td> - * <td width="10%">The time zone: its abbreviation or offset from GMT</td> - * <td width="30%">{@code format("%tZ %tz", cal, cal);}</td> - * <td width="30%">{@code CEST +0100}</td> - * </tr> - * <tr> - * <td width="5%">{@code R}, {@code r}, {@code T}</td> - * <td width="10%">The complete time</td> - * <td width="30%">{@code format("%tR %tr %tT", cal, cal, cal);}</td> - * <td width="30%">{@code 16:15 04:15:32 PM 16:15:32}</td> - * </tr> - * <tr> - * <td width="5%">{@code s}, {@code Q}</td> - * <td width="10%">The number of seconds or milliseconds from "the epoch" - * (1 January 1970 00:00:00 UTC) </td> - * <td width="30%">{@code format("%ts %tQ", cal, cal);}</td> - * <td width="30%">{@code 1207059412 1207059412656}</td> - * </tr> - * <tr> - * <td width="5%">{@code c}</td> - * <td width="10%">The complete time and date</td> - * <td width="30%">{@code format("%tc", cal);}</td> - * <td width="30%">{@code Tue Apr 01 16:19:17 CEST 2008}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Other data types</B></TD> - * </tr> - * <tr> - * <td width="5%">{@code B}, {@code b}</td> - * <td width="10%">Boolean</td> - * <td width="30%">{@code format("%b, %B", true, false);}</td> - * <td width="30%">{@code true, FALSE}</td> - * </tr> - * <tr> - * <td width="5%">{@code H}, {@code h}</td> - * <td width="10%">Hashcode</td> - * <td width="30%">{@code format("%h, %H", obj, obj);}</td> - * <td width="30%">{@code 190d11, 190D11}</td> - * </tr> - * <tr> - * <td width="5%">{@code n}</td> - * <td width="10%">line separator</td> - * <td width="30%">{@code format("first%nsecond", "???");}</td> - * <td width="30%">{@code first<br/>second}</td> - * </tr> - * <tr BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> - * <TD COLSPAN=4> - * <B>Escape sequences</B></TD> - * </tr> - * <tr> - * <td width="5%">{@code %}</td> - * <td width="10%">Escape the % character</td> - * <td width="30%">{@code format("%d%%, %d", 50, 60);}</td> - * <td width="30%">{@code 50%, 60}</td> - * </tr> - * </table> - * - * <p>An instance of Formatter can be created to write the formatted - * output to standard types of output streams. Its functionality can - * also be accessed through the format methods of an output stream - * or of {@code String}:<br/> - * {@code System.out.println(String.format("%ty\n", cal));}<br/> - * {@code System.out.format("%ty\n", cal);} - * - * <p>The class is not multi-threaded safe. The user is responsible for - * maintaining a thread-safe design if a {@code Formatter} is - * accessed by multiple threads. - * - * @since 1.5 - */ -public final class LenientFormatter 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 LenientFormatter} is the default {@code Locale}. - */ - public LenientFormatter() { - 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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(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 LenientFormatter(File file, String csn, Locale l) - throws FileNotFoundException, UnsupportedEncodingException { - FileOutputStream fout = null; - try { - fout = new FileOutputStream(file); - OutputStreamWriter writer = new OutputStreamWriter(fout, csn); - out = new BufferedWriter(writer); - } 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 LenientFormatter(OutputStream os) { - OutputStreamWriter writer = new OutputStreamWriter(os, Charset - .defaultCharset()); - out = new BufferedWriter(writer); - 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 LenientFormatter(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 LenientFormatter(OutputStream os, String csn, Locale l) - throws UnsupportedEncodingException { - - OutputStreamWriter writer = new OutputStreamWriter(os, csn); - out = new BufferedWriter(writer); - - 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 LenientFormatter(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() { - 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 LenientFormatter format(String format, Object... args) { - return format(locale, format, args); - } - - /** - * 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 influence the {@code Locale} specified during - * construction. - * @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 LenientFormatter format(Locale l, String format, Object... args) { - checkClosed(); - CharBuffer formatBuffer = CharBuffer.wrap(format); - ParserStateMachine parser = new ParserStateMachine(formatBuffer); - Transformer transformer = new Transformer(this, l); - - int currentObjectIndex = 0; - Object lastArgument = null; - boolean hasLastArgumentSet = false; - while (formatBuffer.hasRemaining()) { - parser.reset(); - FormatToken token = parser.getNextFormatToken(); - String result; - String plainText = token.getPlainText(); - if (token.getConversionType() == (char) FormatToken.UNSET) { - result = plainText; - } else { - plainText = plainText.substring(0, plainText.indexOf('%')); - Object argument = null; - if (token.requireArgument()) { - int index = token.getArgIndex() == FormatToken.UNSET ? currentObjectIndex++ - : token.getArgIndex(); - argument = getArgument(args, index, token, lastArgument, - hasLastArgumentSet); - lastArgument = argument; - hasLastArgumentSet = true; - } - result = transformer.transform(token, argument); - result = (null == result ? plainText : plainText + result); - } - // if output is made by formattable callback - if (null != result) { - try { - out.append(result); - } catch (IOException e) { - lastIOException = e; - } - } - } - return this; - } - - private Object getArgument(Object[] args, int index, FormatToken token, - 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(token.getPlainText()); - } - - 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 - } - } - - /* - * Information about the format string of a specified argument, which - * includes the conversion type, flags, width, precision and the argument - * index as well as the plainText that contains the whole format string used - * as the result for output if necessary. Besides, the string for flags is - * recorded to construct corresponding FormatExceptions if necessary. - */ - 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_MINUS = 1; - - static final int FLAG_SHARP = 1 << 1; - - static final int FLAG_ADD = 1 << 2; - - static final int FLAG_SPACE = 1 << 3; - - static final int FLAG_ZERO = 1 << 4; - - static final int FLAG_COMMA = 1 << 5; - - static final int FLAG_PARENTHESIS = 1 << 6; - - private static final int FLAGT_TYPE_COUNT = 6; - - private int formatStringStartIndex; - - private String plainText; - - private int argIndex = UNSET; - - private int flags = 0; - - private int width = UNSET; - - private int precision = UNSET; - - private StringBuilder strFlags = new StringBuilder(FLAGT_TYPE_COUNT); - - private char dateSuffix;// will be used in new feature. - - private char conversionType = (char) UNSET; - - boolean isPrecisionSet() { - return precision != UNSET; - } - - boolean isWidthSet() { - return width != UNSET; - } - - boolean isFlagSet(int flag) { - return 0 != (flags & flag); - } - - int getArgIndex() { - return argIndex; - } - - void setArgIndex(int index) { - argIndex = index; - } - - String getPlainText() { - return plainText; - } - - void setPlainText(String plainText) { - this.plainText = plainText; - } - - 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.toString(); - } - - int getFlags() { - return flags; - } - - void setFlags(int flags) { - this.flags = flags; - } - - /* - * 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(char c) { - int newFlag; - switch (c) { - case '-': { - newFlag = FLAG_MINUS; - break; - } - case '#': { - newFlag = FLAG_SHARP; - break; - } - case '+': { - newFlag = FLAG_ADD; - break; - } - case ' ': { - newFlag = FLAG_SPACE; - break; - } - case '0': { - newFlag = FLAG_ZERO; - break; - } - case ',': { - newFlag = FLAG_COMMA; - break; - } - case '(': { - newFlag = FLAG_PARENTHESIS; - break; - } - default: - return false; - } - if (0 != (flags & newFlag)) { - throw new DuplicateFormatFlagsException(String.valueOf(c)); - } - flags = (flags | newFlag); - strFlags.append(c); - return true; - - } - - int getFormatStringStartIndex() { - return formatStringStartIndex; - } - - void setFormatStringStartIndex(int index) { - formatStringStartIndex = index; - } - - 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'; - } - } - - /* - * Transforms the argument to the formatted string according to the format - * information contained in the format token. - */ - private static class Transformer { - - private LenientFormatter formatter; - - private FormatToken formatToken; - - private Object arg; - - private Locale locale; - - private static String lineSeparator; - - private NumberFormat numberFormat; - - private DecimalFormatSymbols decimalFormatSymbols; - - private DateTimeUtil dateTimeUtil; - - Transformer(LenientFormatter formatter, Locale locale) { - this.formatter = formatter; - this.locale = (null == locale ? Locale.US : locale); - } - - private NumberFormat getNumberFormat() { - if (null == numberFormat) { - numberFormat = NumberFormat.getInstance(locale); - } - return numberFormat; - } - - private DecimalFormatSymbols getDecimalFormatSymbols() { - if (null == decimalFormatSymbols) { - decimalFormatSymbols = new DecimalFormatSymbols(locale); - } - return decimalFormatSymbols; - } - - /* - * Gets the formatted string according to the format token and the - * argument. - */ - String transform(FormatToken token, Object argument) { - - /* init data member to print */ - this.formatToken = token; - this.arg = argument; - - String 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 (null != result) { - result = result.toUpperCase(Locale.US); - } - } - return result; - } - - /* - * Transforms the Boolean argument to a formatted string. - */ - private String transformFromBoolean() { - StringBuilder result = new StringBuilder(); - int startIndex = 0; - int flags = formatToken.getFlags(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && !formatToken.isWidthSet()) { - throw new MissingFormatWidthException("-" //$NON-NLS-1$ - + formatToken.getConversionType()); - } - - // only '-' is valid for flags - if (FormatToken.FLAGS_UNSET != flags - && FormatToken.FLAG_MINUS != flags) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), formatToken.getConversionType()); - } - - if (null == arg) { - result.append("false"); //$NON-NLS-1$ - } else if (arg instanceof Boolean) { - result.append(arg); - } else { - result.append("true"); //$NON-NLS-1$ - } - return padding(result, startIndex); - } - - /* - * Transforms the hashcode of the argument to a formatted string. - */ - private String transformFromHashCode() { - StringBuilder result = new StringBuilder(); - - int startIndex = 0; - int flags = formatToken.getFlags(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && !formatToken.isWidthSet()) { - throw new MissingFormatWidthException("-" //$NON-NLS-1$ - + formatToken.getConversionType()); - } - - // only '-' is valid for flags - if (FormatToken.FLAGS_UNSET != flags - && FormatToken.FLAG_MINUS != flags) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), formatToken.getConversionType()); - } - - if (null == arg) { - result.append("null"); //$NON-NLS-1$ - } else { - result.append(Integer.toHexString(arg.hashCode())); - } - return padding(result, startIndex); - } - - /* - * Transforms the String to a formatted string. - */ - private String transformFromString() { - StringBuilder result = new StringBuilder(); - int startIndex = 0; - int flags = formatToken.getFlags(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && !formatToken.isWidthSet()) { - throw new MissingFormatWidthException("-" //$NON-NLS-1$ - + formatToken.getConversionType()); - } - - // only '-' is valid for flags if the argument is not an - // instance of Formattable - if (FormatToken.FLAGS_UNSET != flags - && FormatToken.FLAG_MINUS != flags) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), formatToken.getConversionType()); - } - - result.append(arg); - return padding(result, startIndex); - } - - /* - * Transforms the Character to a formatted string. - */ - private String transformFromCharacter() { - StringBuilder result = new StringBuilder(); - - int startIndex = 0; - int flags = formatToken.getFlags(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && !formatToken.isWidthSet()) { - throw new MissingFormatWidthException("-" //$NON-NLS-1$ - + formatToken.getConversionType()); - } - - // only '-' is valid for flags - if (FormatToken.FLAGS_UNSET != flags - && FormatToken.FLAG_MINUS != flags) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), formatToken.getConversionType()); - } - - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - - if (null == arg) { - result.append("null"); //$NON-NLS-1$ - } else { - if (arg instanceof Character) { - result.append(arg); - } else if (arg instanceof Byte) { - byte b = ((Byte) arg).byteValue(); - if (!Character.isValidCodePoint(b)) { - throw new IllegalFormatCodePointException(b); - } - result.append((char) b); - } else if (arg instanceof Short) { - short s = ((Short) arg).shortValue(); - if (!Character.isValidCodePoint(s)) { - throw new IllegalFormatCodePointException(s); - } - result.append((char) s); - } else if (arg instanceof Number) { - int codePoint = ((Number) arg).intValue(); - if (!Character.isValidCodePoint(codePoint)) { - throw new IllegalFormatCodePointException(codePoint); - } - result.append(String.valueOf(Character.toChars(codePoint))); - } else { - // argument of other class is not acceptable. - throw new IllegalFormatConversionException(formatToken - .getConversionType(), arg.getClass()); - } - } - return padding(result, startIndex); - } - - /* - * Transforms percent to a formatted string. Only '-' is legal flag. - * Precision is illegal. - */ - private String transformFromPercent() { - StringBuilder result = new StringBuilder("%"); //$NON-NLS-1$ - - int startIndex = 0; - int flags = formatToken.getFlags(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && !formatToken.isWidthSet()) { - throw new MissingFormatWidthException("-" //$NON-NLS-1$ - + formatToken.getConversionType()); - } - - if (FormatToken.FLAGS_UNSET != flags - && FormatToken.FLAG_MINUS != flags) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), formatToken.getConversionType()); - } - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - return padding(result, startIndex); - } - - /* - * Transforms line separator to a formatted string. Any flag, the width - * or the precision is illegal. - */ - private String transformFromLineSeparator() { - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - - if (formatToken.isWidthSet()) { - throw new IllegalFormatWidthException(formatToken.getWidth()); - } - - int flags = formatToken.getFlags(); - if (FormatToken.FLAGS_UNSET != flags) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - if (null == lineSeparator) { - 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 String padding(StringBuilder source, int startIndex) { - int start = startIndex; - boolean paddingRight = formatToken - .isFlagSet(FormatToken.FLAG_MINUS); - char paddingChar = '\u0020';// space as padding char. - if (formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - if ('d' == formatToken.getConversionType()) { - paddingChar = getDecimalFormatSymbols().getZeroDigit(); - } else { - paddingChar = '0'; - } - } else { - // if padding char is space, always padding from the head - // location. - start = 0; - } - int width = formatToken.getWidth(); - int precision = formatToken.getPrecision(); - - int length = source.length(); - if (precision >= 0) { - length = Math.min(length, precision); - source.delete(length, source.length()); - } - if (width > 0) { - width = Math.max(source.length(), width); - } - if (length >= width) { - return source.toString(); - } - - char[] paddings = new char[width - length]; - Arrays.fill(paddings, paddingChar); - String insertString = new String(paddings); - - if (paddingRight) { - source.append(insertString); - } else { - source.insert(start, insertString); - } - return source.toString(); - } - - /* - * Transforms the Integer to a formatted string. - */ - private String transformFromInteger() { - int startIndex = 0; - boolean isNegative = false; - StringBuilder result = new StringBuilder(); - char currentConversionType = formatToken.getConversionType(); - long value; - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - || formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - if (!formatToken.isWidthSet()) { - throw new MissingFormatWidthException(formatToken - .getStrFlags()); - } - } - // Combination of '+' & ' ' is illegal. - if (formatToken.isFlagSet(FormatToken.FLAG_ADD) - && formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - 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 if (arg instanceof Number) { - value = ((Number) arg).longValue(); - } else { - throw new IllegalFormatConversionException(formatToken - .getConversionType(), arg.getClass()); - } - if ('d' != currentConversionType) { - if (formatToken.isFlagSet(FormatToken.FLAG_ADD) - || formatToken.isFlagSet(FormatToken.FLAG_SPACE) - || formatToken.isFlagSet(FormatToken.FLAG_COMMA) - || formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - throw new FormatFlagsConversionMismatchException( - formatToken.getStrFlags(), formatToken - .getConversionType()); - } - } - - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP)) { - 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.isFlagSet(FormatToken.FLAG_MINUS) - && formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - if (value < 0) { - isNegative = true; - } - - if ('d' == currentConversionType) { - NumberFormat numberFormat = getNumberFormat(); - if (formatToken.isFlagSet(FormatToken.FLAG_COMMA)) { - numberFormat.setGroupingUsed(true); - } else { - numberFormat.setGroupingUsed(false); - } - result.append(numberFormat.format(arg)); - } else { - long BYTE_MASK = 0x00000000000000FFL; - long SHORT_MASK = 0x000000000000FFFFL; - long INT_MASK = 0x00000000FFFFFFFFL; - if (isNegative) { - if (arg instanceof Byte) { - value &= BYTE_MASK; - } else if (arg instanceof Short) { - value &= SHORT_MASK; - } else if (arg instanceof Integer) { - value &= INT_MASK; - } - } - if ('o' == currentConversionType) { - result.append(Long.toOctalString(value)); - } else { - result.append(Long.toHexString(value)); - } - isNegative = false; - } - - if (!isNegative) { - if (formatToken.isFlagSet(FormatToken.FLAG_ADD)) { - result.insert(0, '+'); - startIndex += 1; - } - if (formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - result.insert(0, ' '); - startIndex += 1; - } - } - - /* pad paddingChar to the output */ - if (isNegative - && formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - result = wrapParentheses(result); - return result.toString(); - - } - if (isNegative && formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - startIndex++; - } - return padding(result, startIndex); - } - - /* - * add () to the output,if the value is negative and - * formatToken.FLAG_PARENTHESIS is set. 'result' is used as an in-out - * parameter. - */ - private StringBuilder wrapParentheses(StringBuilder result) { - // delete the '-' - result.deleteCharAt(0); - result.insert(0, '('); - if (formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - formatToken.setWidth(formatToken.getWidth() - 1); - padding(result, 1); - result.append(')'); - } else { - result.append(')'); - padding(result, 0); - } - return result; - } - - private String transformFromSpecialNumber() { - String source = null; - - if (!(arg instanceof Number) || arg instanceof BigDecimal) { - return null; - } - - Number number = (Number) arg; - double d = number.doubleValue(); - if (Double.isNaN(d)) { - source = "NaN"; //$NON-NLS-1$ - } else if (Double.isInfinite(d)) { - if (d >= 0) { - if (formatToken.isFlagSet(FormatToken.FLAG_ADD)) { - source = "+Infinity"; //$NON-NLS-1$ - } else if (formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - source = " Infinity"; //$NON-NLS-1$ - } else { - source = "Infinity"; //$NON-NLS-1$ - } - } else { - if (formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - source = "(Infinity)"; //$NON-NLS-1$ - } else { - source = "-Infinity"; //$NON-NLS-1$ - } - } - } - - if (null != source) { - formatToken.setPrecision(FormatToken.UNSET); - formatToken.setFlags(formatToken.getFlags() - & (~FormatToken.FLAG_ZERO)); - source = padding(new StringBuilder(source), 0); - } - return source; - } - - private String transformFromNull() { - formatToken.setFlags(formatToken.getFlags() - & (~FormatToken.FLAG_ZERO)); - return padding(new StringBuilder("null"), 0); //$NON-NLS-1$ - } - - /* - * Transforms a BigInteger to a formatted string. - */ - private String transformFromBigInteger() { - int startIndex = 0; - boolean isNegative = false; - StringBuilder result = new StringBuilder(); - BigInteger bigInt = (BigInteger) arg; - char currentConversionType = formatToken.getConversionType(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - || formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - if (!formatToken.isWidthSet()) { - throw new MissingFormatWidthException(formatToken - .getStrFlags()); - } - } - - // Combination of '+' & ' ' is illegal. - if (formatToken.isFlagSet(FormatToken.FLAG_ADD) - && formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - // Combination of '-' & '0' is illegal. - if (formatToken.isFlagSet(FormatToken.FLAG_ZERO) - && formatToken.isFlagSet(FormatToken.FLAG_MINUS)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - - if ('d' != currentConversionType - && formatToken.isFlagSet(FormatToken.FLAG_COMMA)) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), currentConversionType); - } - - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP) - && 'd' == currentConversionType) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), currentConversionType); - } - - if (null == bigInt) { - return transformFromNull(); - } - - isNegative = (bigInt.compareTo(BigInteger.ZERO) < 0); - - if ('d' == currentConversionType) { - NumberFormat numberFormat = getNumberFormat(); - boolean readableName = formatToken - .isFlagSet(FormatToken.FLAG_COMMA); - numberFormat.setGroupingUsed(readableName); - 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.isFlagSet(FormatToken.FLAG_SHARP)) { - 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.isFlagSet(FormatToken.FLAG_ADD)) { - result.insert(0, '+'); - startIndex += 1; - } - if (formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - result.insert(0, ' '); - startIndex += 1; - } - } - - /* pad paddingChar to the output */ - if (isNegative - && formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - result = wrapParentheses(result); - return result.toString(); - - } - if (isNegative && formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - startIndex++; - } - return padding(result, startIndex); - } - - /* - * Transforms a Float,Double or BigDecimal to a formatted string. - */ - private String transformFromFloat() { - StringBuilder result = new StringBuilder(); - int startIndex = 0; - char currentConversionType = formatToken.getConversionType(); - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS - | FormatToken.FLAG_ZERO)) { - if (!formatToken.isWidthSet()) { - throw new MissingFormatWidthException(formatToken - .getStrFlags()); - } - } - - if (formatToken.isFlagSet(FormatToken.FLAG_ADD) - && formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && formatToken.isFlagSet(FormatToken.FLAG_ZERO)) { - throw new IllegalFormatFlagsException(formatToken.getStrFlags()); - } - - if ('e' == Character.toLowerCase(currentConversionType)) { - if (formatToken.isFlagSet(FormatToken.FLAG_COMMA)) { - throw new FormatFlagsConversionMismatchException( - formatToken.getStrFlags(), currentConversionType); - } - } - - if ('g' == Character.toLowerCase(currentConversionType)) { - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP)) { - throw new FormatFlagsConversionMismatchException( - formatToken.getStrFlags(), currentConversionType); - } - } - - if ('a' == Character.toLowerCase(currentConversionType)) { - if (formatToken.isFlagSet(FormatToken.FLAG_COMMA) - || formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - throw new FormatFlagsConversionMismatchException( - formatToken.getStrFlags(), currentConversionType); - } - } - - if (null == arg) { - return transformFromNull(); - } - - Object arg2 = arg; - - if (!(arg2 instanceof Float || arg2 instanceof Double || arg2 instanceof BigDecimal)) { - if (arg2 instanceof Number) { - arg2 = Double.valueOf(((Number)arg2).doubleValue()); - } - else { - throw new IllegalFormatConversionException(currentConversionType, arg.getClass()); - } - } - - String specialNumberResult = transformFromSpecialNumber(); - if (null != specialNumberResult) { - return specialNumberResult; - } - - if ('a' != Character.toLowerCase(currentConversionType)) { - formatToken - .setPrecision(formatToken.isPrecisionSet() ? formatToken - .getPrecision() - : FormatToken.DEFAULT_PRECISION); - } - // output result - FloatUtil floatUtil = new FloatUtil(result, formatToken, - (DecimalFormat) NumberFormat.getInstance(locale), arg2); - floatUtil.transform(formatToken, result); - - formatToken.setPrecision(FormatToken.UNSET); - - if (getDecimalFormatSymbols().getMinusSign() == result.charAt(0)) { - if (formatToken.isFlagSet(FormatToken.FLAG_PARENTHESIS)) { - result = wrapParentheses(result); - return result.toString(); - } - } else { - if (formatToken.isFlagSet(FormatToken.FLAG_SPACE)) { - result.insert(0, ' '); - startIndex++; - } - if (formatToken.isFlagSet(FormatToken.FLAG_ADD)) { - result.insert(0, floatUtil.getAddSign()); - startIndex++; - } - } - - char firstChar = result.charAt(0); - if (formatToken.isFlagSet(FormatToken.FLAG_ZERO) - && (firstChar == floatUtil.getAddSign() || firstChar == floatUtil - .getMinusSign())) { - startIndex = 1; - } - - if ('a' == Character.toLowerCase(currentConversionType)) { - startIndex += 2; - } - return padding(result, startIndex); - } - - /* - * Transforms a Date to a formatted string. - */ - private String transformFromDateTime() { - int startIndex = 0; - char currentConversionType = formatToken.getConversionType(); - - if (formatToken.isPrecisionSet()) { - throw new IllegalFormatPrecisionException(formatToken - .getPrecision()); - } - - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP)) { - throw new FormatFlagsConversionMismatchException(formatToken - .getStrFlags(), currentConversionType); - } - - if (formatToken.isFlagSet(FormatToken.FLAG_MINUS) - && FormatToken.UNSET == formatToken.getWidth()) { - 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 Number) { - date = new Date(((Number) arg).longValue()); - } else if (arg instanceof Date) { - date = (Date) arg; - } else { - throw new IllegalFormatConversionException( - currentConversionType, arg.getClass()); - } - 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, startIndex); - } - } - - private static class FloatUtil { - private StringBuilder result; - - private DecimalFormat decimalFormat; - - private FormatToken formatToken; - - private Object argument; - - private char minusSign; - - FloatUtil(StringBuilder result, FormatToken formatToken, - DecimalFormat decimalFormat, Object argument) { - this.result = result; - this.formatToken = formatToken; - this.decimalFormat = decimalFormat; - this.argument = argument; - this.minusSign = decimalFormat.getDecimalFormatSymbols() - .getMinusSign(); - } - - void transform(FormatToken aFormatToken, StringBuilder aResult) { - this.result = aResult; - this.formatToken = aFormatToken; - switch (formatToken.getConversionType()) { - 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(formatToken.getConversionType())); - } - } - } - - char getMinusSign() { - return minusSign; - } - - 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 seperator is always given - // out. - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP) - && 0 == formatToken.getPrecision()) { - int indexOfE = result.indexOf("e"); //$NON-NLS-1$ - char dot = decimalFormat.getDecimalFormatSymbols() - .getDecimalSeparator(); - result.insert(indexOfE, dot); - } - } - - 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() { - StringBuilder pattern = new StringBuilder(); - if (formatToken.isFlagSet(FormatToken.FLAG_COMMA)) { - pattern.append(','); - int groupingSize = decimalFormat.getGroupingSize(); - if (groupingSize > 1) { - char[] sharps = new char[groupingSize - 1]; - Arrays.fill(sharps, '#'); - pattern.append(sharps); - } - } - - pattern.append(0); - - if (formatToken.getPrecision() > 0) { - pattern.append('.'); - char[] zeros = new char[formatToken.getPrecision()]; - Arrays.fill(zeros, '0'); - pattern.append(zeros); - } - decimalFormat.applyPattern(pattern.toString()); - result.append(decimalFormat.format(argument)); - // if the flag is sharp and decimal seperator is always given - // out. - if (formatToken.isFlagSet(FormatToken.FLAG_SHARP) - && 0 == formatToken.getPrecision()) { - char dot = decimalFormat.getDecimalFormatSymbols() - .getDecimalSeparator(); - result.append(dot); - } - - } - - void transform_a() { - char currentConversionType = formatToken.getConversionType(); - - 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( - currentConversionType, argument.getClass()); - } - - if (!formatToken.isPrecisionSet()) { - return; - } - - int precision = formatToken.getPrecision(); - precision = (0 == precision ? 1 : precision); - int indexOfFirstFracitoanlDigit = result.indexOf(".") + 1; //$NON-NLS-1$ - int indexOfP = result.indexOf("p"); //$NON-NLS-1$ - int fractionalLength = indexOfP - indexOfFirstFracitoanlDigit; - - if (fractionalLength == precision) { - return; - } - - if (fractionalLength < precision) { - char zeros[] = new char[precision - fractionalLength]; - Arrays.fill(zeros, '0'); - result.insert(indexOfP, zeros); - return; - } - result.delete(indexOfFirstFracitoanlDigit + 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() { - int zoneOffset = calendar.get(Calendar.ZONE_OFFSET); - zoneOffset /= 3600000; - zoneOffset *= 100; - if (zoneOffset >= 0) { - result.append('+'); - } - result.append(paddingZeros(zoneOffset, 4)); - } - - 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() { - // TODO System.nanoTime(); - 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(); - } - - 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 ParserStateMachine { - - private static final char EOS = (char) -1; - - private static final int EXIT_STATE = 0; - - private static final int ENTRY_STATE = 1; - - private static final int START_CONVERSION_STATE = 2; - - private static final int FLAGS_STATE = 3; - - private static final int WIDTH_STATE = 4; - - private static final int PRECISION_STATE = 5; - - private static final int CONVERSION_TYPE_STATE = 6; - - private static final int SUFFIX_STATE = 7; - - private FormatToken token; - - private int state = ENTRY_STATE; - - private char currentChar = 0; - - private CharBuffer format = null; - - ParserStateMachine(CharBuffer format) { - this.format = format; - } - - void reset() { - this.currentChar = (char) FormatToken.UNSET; - this.state = ENTRY_STATE; - this.token = null; - } - - /* - * Gets the information about the current format token. Information is - * recorded in the FormatToken returned and the position of the stream - * for the format string will be advanced till the next format token. - */ - FormatToken getNextFormatToken() { - token = new FormatToken(); - token.setFormatStringStartIndex(format.position()); - - // FINITE AUTOMATIC MACHINE - while (true) { - - if (ParserStateMachine.EXIT_STATE != state) { - // exit state does not need to get next char - currentChar = getNextFormatChar(); - if (EOS == currentChar - && ParserStateMachine.ENTRY_STATE != state) { - throw new UnknownFormatConversionException( - getFormatString()); - } - } - - switch (state) { - // exit state - case ParserStateMachine.EXIT_STATE: { - process_EXIT_STATE(); - return token; - } - // plain text state, not yet applied converter - case ParserStateMachine.ENTRY_STATE: { - process_ENTRY_STATE(); - break; - } - // begins converted string - case ParserStateMachine.START_CONVERSION_STATE: { - process_START_CONVERSION_STATE(); - break; - } - case ParserStateMachine.FLAGS_STATE: { - process_FlAGS_STATE(); - break; - } - case ParserStateMachine.WIDTH_STATE: { - process_WIDTH_STATE(); - break; - } - case ParserStateMachine.PRECISION_STATE: { - process_PRECISION_STATE(); - break; - } - case ParserStateMachine.CONVERSION_TYPE_STATE: { - process_CONVERSION_TYPE_STATE(); - break; - } - case ParserStateMachine.SUFFIX_STATE: { - process_SUFFIX_STATE(); - break; - } - } - } - } - - /* - * Gets next char from the format string. - */ - private char getNextFormatChar() { - if (format.hasRemaining()) { - return format.get(); - } - return EOS; - } - - private String getFormatString() { - int end = format.position(); - format.rewind(); - String formatString = format.subSequence( - token.getFormatStringStartIndex(), end).toString(); - format.position(end); - return formatString; - } - - private void process_ENTRY_STATE() { - if (EOS == currentChar) { - state = ParserStateMachine.EXIT_STATE; - } else if ('%' == currentChar) { - // change to conversion type state - state = START_CONVERSION_STATE; - } - // else remains in ENTRY_STATE - } - - private void process_START_CONVERSION_STATE() { - if (Character.isDigit(currentChar)) { - int position = format.position() - 1; - int number = parseInt(format); - char nextChar = 0; - if (format.hasRemaining()) { - nextChar = format.get(); - } - if ('$' == nextChar) { - // the digital sequence stands for the argument - // index. - int argIndex = number; - // k$ stands for the argument whose index is k-1 except that - // 0$ and 1$ both stands for the first element. - if (argIndex > 0) { - token.setArgIndex(argIndex - 1); - } else if (argIndex == FormatToken.UNSET) { - throw new MissingFormatArgumentException( - getFormatString()); - } - state = FLAGS_STATE; - } else { - // the digital zero stands for one format flag. - if ('0' == currentChar) { - state = FLAGS_STATE; - format.position(position); - } else { - // the digital sequence stands for the width. - state = WIDTH_STATE; - // do not get the next char. - format.position(format.position() - 1); - token.setWidth(number); - } - } - currentChar = nextChar; - } else if ('<' == currentChar) { - state = FLAGS_STATE; - token.setArgIndex(FormatToken.LAST_ARGUMENT_INDEX); - } else { - state = FLAGS_STATE; - // do not get the next char. - format.position(format.position() - 1); - } - - } - - private void process_FlAGS_STATE() { - if (token.setFlag(currentChar)) { - // remains in FLAGS_STATE - } else if (Character.isDigit(currentChar)) { - token.setWidth(parseInt(format)); - state = WIDTH_STATE; - } else if ('.' == currentChar) { - state = PRECISION_STATE; - } else { - state = CONVERSION_TYPE_STATE; - // do not get the next char. - format.position(format.position() - 1); - } - } - - private void process_WIDTH_STATE() { - if ('.' == currentChar) { - state = PRECISION_STATE; - } else { - state = CONVERSION_TYPE_STATE; - // do not get the next char. - format.position(format.position() - 1); - } - } - - private void process_PRECISION_STATE() { - if (Character.isDigit(currentChar)) { - token.setPrecision(parseInt(format)); - } else { - // the precision is required but not given by the - // format string. - throw new UnknownFormatConversionException(getFormatString()); - } - state = CONVERSION_TYPE_STATE; - } - - private void process_CONVERSION_TYPE_STATE() { - token.setConversionType(currentChar); - if ('t' == currentChar || 'T' == currentChar) { - state = SUFFIX_STATE; - } else { - state = EXIT_STATE; - } - - } - - private void process_SUFFIX_STATE() { - token.setDateSuffix(currentChar); - state = EXIT_STATE; - } - - private void process_EXIT_STATE() { - token.setPlainText(getFormatString()); - } - - /* - * Parses integer value from the given buffer - */ - private int parseInt(CharBuffer buffer) { - int start = buffer.position() - 1; - int end = buffer.limit(); - while (buffer.hasRemaining()) { - if (!Character.isDigit(buffer.get())) { - end = buffer.position() - 1; - break; - } - } - buffer.position(0); - String intStr = buffer.subSequence(start, end).toString(); - buffer.position(end); - try { - return Integer.parseInt(intStr); - } catch (NumberFormatException e) { - return FormatToken.UNSET; - } - } - } -} |